US3903541A - Apparatus for processing printing plates precoated on one side only - Google Patents

Apparatus for processing printing plates precoated on one side only Download PDF

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US3903541A
US3903541A US166474A US16647471A US3903541A US 3903541 A US3903541 A US 3903541A US 166474 A US166474 A US 166474A US 16647471 A US16647471 A US 16647471A US 3903541 A US3903541 A US 3903541A
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plate
developer
bar
processed
dispensing apparatus
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US166474A
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Meister Frederick W Von
Jr Eugene J Gaisser
Robert C Graham
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Priority to BE786790D priority Critical patent/BE786790A/en
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Priority to US166474A priority patent/US3903541A/en
Priority to NL7209865A priority patent/NL7209865A/xx
Priority to DE2235571A priority patent/DE2235571A1/en
Priority to AT635672A priority patent/AT321321B/en
Priority to CA147,872A priority patent/CA983760A/en
Priority to IT51762/72A priority patent/IT961701B/en
Priority to JP47075484A priority patent/JPS4829505A/ja
Priority to GB3527572A priority patent/GB1403224A/en
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03DAPPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D5/00Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected
    • G03D5/006Liquid supply by means of a split or a capillarity
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26Processing photosensitive materials; Apparatus therefor
    • G03F7/30Imagewise removal using liquid means
    • G03F7/3042Imagewise removal using liquid means from printing plates transported horizontally through the processing stations

Definitions

  • a subtractive presensitized offset printing plate may be developed by what is known as the hand developing process.
  • the carrier which is usually a thin sheet of aluminum, is first coated by the manufacturer with a light-sensitive coating usually containing, among other things, one or more resins, and the plate is then sold in the presensitized condition to the customer.
  • the customer exposes the printing plate through a stencil to a source of strong light, such as a carbon are for example.
  • a source of strong light such as a carbon are for example.
  • the lightsensitive coating when subjected to such a light is converted in such a manner that, after development, the image areas are retained on the plate surface and the non-image areas are removed.
  • the plate After development, for example by rubbing a developing agent into the surface of the plate by means of a sponge, the plate may be fixed and/or washed and, finally. a coating of gum arabic or similar material is applied to the surface of the plate to protect the image free areas thereof.
  • the plate is then ready for the printing press.
  • the printing member thus prepared is then subjected to a developing operation using the chemistry prescribed by the manufacturer of the printing member.
  • This chemistry is worked into the exposed coating by hand rubbing, for example with a sponge, until the nonimage areas are subtracted or removed from the carrier leaving an exact replica of the image on the plate carrier.
  • the printing member is then fixed and/or washed and a solution of gum arabic, or a similar solution, is applied to the plate surface, resulting in a printing plate which is ready for the press.
  • the present invention overcomes the difficulties associated with conventional hand developing of a plate coated on one side only by providing a novel dispensing apparatus for lithographic developer.
  • the dispensing apparatus avoids changes in the processing solutions by a unique method of metering the processing fluids in controlled quantities onto the plate surface without damaging the plate surface, rendering it possible to economically use the processing solutions only once, and without smearing or dragging used solutions into fresh solutions or onto adjacent plate areas.
  • fluid is pumped under pressure into a manifold, which may have a width of about one inch and a height of about one-half inch.
  • a plurality of apertures dispense the fluid, under pressure created by a pump, into a second bar which has a width of about one inch and a length corresponding to the width of the machine.
  • the bottom bar contains a slot which may have a width of about 1/16 inch, for example.
  • the bar is made of plastic so that it does not scratch the surface of the plate in contact therewith.
  • the entire assembly is spring-loaded and rests on a backup plate made of hard rubber.
  • a pair of nip rolls transport a plate into a developing station and between the backup plate and the dispensing apparatus.
  • the pump pressure forces a quantity of developer into the slot in the dispensing apparatus and, since there is a backup plate facing and in contact with the spring-loaded bar of the dispensing apparatus, the slot in the bar fills with developer prior to the entrance of the plate and causes a slight rising of the entire assembly, by about 0.015 inch. with little or no outflow of the developer. This rise, in turn, allows the plate to enter between the bar and the backup plate without actually contacting the dispensing apparatus.
  • the moving plate receives fluid developer from the slot in the bar and carries the developer away, the developer is constantly replaced from the manifold as a result of the pressure of the pump supplying developer from the reservoir. Simultaneously, this continuing feed of developer maintains the dispensing assembly above the surface of the plate to be developed and the inverted menicus created dispenses a minimum coating of developer, regulated by the pressure of the feed pump, uniformly upon the plate.
  • a reciprocating rubber squeegee assures that the developer is adequately rubbed into the surface of the plate.
  • the action thereof can be made rather rapid so that shortly thereafter it can be squeegeed off and drained away into a waste disposal by a pair of squeegee rolls.
  • a second application of developer may be applied in a similar mechanism.
  • a third similar mechanism can be employed to apply a fixing solution, if necessary, for the proper preparation of the plate. This may be combined with a rubbing action of a piece of velour-like material reciprocating transversely to the direction of plate travel at a rate of about 175 strokes per minute. in a stroke of about one-half inch.
  • the plate then enters a washing station and a lacquering station, if required, followed by a second washing or gumming station before exiting from the apparatus as a completed plate ready for the printing press or for further work prior to going to the printing press.
  • FIG. I is a schematic view of a processing line for processing printing plates precoated on one side only
  • FIG. 2 is a perspective view of a portion of the processing line of FIG. 1 showing the developer dispensing apparatus
  • FIG. 3 is a sectional view taken on line 33 of FIG. 2 and looking in the direction of the arrows.
  • a planographic printing plate sensitized on one side and imaged by exposure to a desired master is inserted into the processing line at the point of the arrow 2.
  • the inserted plate passes over the trigger mechanism 4 and thus actuates the entire processing line, i.e., the feed rolls as well as all transportsqueegee rolls begin rotating.
  • pumps connected to the various chemical supply tanks, not shown begin operating and dispensing chemistry as required.
  • the developer dispensing apparatuses or heads as well as the rinse-scrubber head begin reciproeating.
  • the plate passes through a pair of feed rolls 6, which rolls pass the plate between the first developer dispensing head 8 and its associated support rail 10, and a controlled amount of developer at a controlled temperature is dispensed from the developer dispensing head 8 onto the plate surface and carried away.
  • This amount can be regulated by adjusting the pressure in the developer supply line by setting a bypass, not shown, and a volume regulator which will be described below in connection with FIG. 3.
  • the plate then passes through a first set of transportsqueegee rolls 14 which rolls transport the plate into the second developer dispensing assembly 16 having an associated backup plate 18.
  • the construction of the second developer dispensing assembly 16 and its associated backup plate 18 is identical with the construction of the first developer dispensing head 8 and its associated backup plate 10.
  • the second developer dispensing head reapplies a fresh amount of developer solution in the same manner as the first developer dispensing head 8.
  • the plate then reaches a second pair of transportsqueegee rolls 20 which remove all excess developer and, in turn, propel the plate under the rinse-scrubber head 22 which removes residual developer from the plate before it enters the third transport-squeegee roll assembly 24.
  • the latter rolls advance the plate under the gum dispensing tube 26 and into the transportsqueegee rolls 28, which latter move the plate between the air dryer tubes 30 and into the exit rolls 32 which, in turn, propel the developed, gummed and dried planographic printing plate out of the processing line ready to be mounted on a press.
  • a plate 34 is shown as it passes between the feed rolls 6 and under the first developer dispensing head 8.
  • developer is supplied through the developer line 36 and the dispensing head is reciprocated transversely to the direction of plate travel by means of the reciprocator shaft 38.
  • the dispensing head is shown in more detail in FIG. 3.
  • the dispensing head includes the bottom bar 40 which abuts against the hard rubber surface 42 of the backup plate 10 when no plate is received between the two.
  • the bottom bar 40 has a slot 44 therein which extends across the length of the bottom bar 40 but not completely to the ends thereof, so that developer pumped into the slot cannot run out of the ends thereof.
  • the developer is supplied to the slot 44 by means of the passage 46 which connects to the reservoir 48 in the manifold 50.
  • the reservoir 48 is connected to the developer supply line 36 by means of a bore in the rod 52.
  • the rod 52 slides freely in the supporting bracket 54, to which the reciprocator shaft 38 is connected by the machine screws 56, and the entire assembly is reciprocated by the shaft 38 connected to a reciprocating apparatus, not shown.
  • the bar 40 which may be made of plastic, is biased against the surface of the plate 34 by means of the spring 58 and any degree of pressure desired may be obtained by balancing the spring pressure against the pressure of the developer supplied to the slot 44.
  • the volume of developer supplied to the slot 44 may be regulated by the developer supply volume regulator 60 having a hand wheel 62 thereon.
  • the supply volume regulator is of conventional construction and, accordingly, will not be further described.
  • the entire processing line is enclosed in a housing, not shown.
  • the processing line is intended to be used with fresh chemistry at all times, i.e., there is no recirculation. By so doing, all parameters are maintained constant and since, in addition, the temperature of the developer is controlled to within 5F., processing of printing plates is predictable and reproducible.
  • a dispensing apparatus for lithographic processing fluids comprising; bar means adapted to extend across a printing plate to be processed, having a single outlet means comprising a slot in that side of said bar means facing said plate to be processed and an inlet means in fluid communication with said outlet means, mounted to move perpendicular to the surface of said plate to be processed and normally biased toward the side of said plate to be processed; means for supplying processing fluid, under pressure sufficient to overcome the biasing of said bar means and move said bar means away from the surface of said plate to be processed; and means for reciprocating said bar means transversely to the direction of travel of said plate to be processed.
  • a dispensing apparatus including spring means biasing said bar means toward a plate to be developed.
  • a dispensing apparatus including spreader blade means secured to said bar means.

Abstract

This invention relates to a dispensing apparatus for lithographic developer comprising bar means adapted to extend across a printing plate to be developed, slot means in the bottom of said bar means, means for supplying developer under pressure to said slot means, and means for reciprocating said bar means transversely to the direction of plate travel.

Description

NJ. 07871; Robert C. Graham, 10 Pierson Ln., Florham Park, NJ. 07932 July 27, 1971 (Under Rule 47) Appl. No: 166,474
[22] Filed:
[56] References Cited UNITED STATES PATENTS 2.677.320 5/1954 Coughlin 95/89 R United States Patent 1191 1111 3,903,541 Von Meister et al. Sept. 2, 1975 [54] APPARATUS FOR PROCESSING PRINTING 2,956,494 10/1960 Tyler et a1 118/410 UX PLATES PRECOATED ON ONE SIDE ONLY 3,066,047 11/1962 Mahoney 118/120 X 3,081,687 3/1963 Takats 95/89 R [76] Inventors: Frederick W. Von Meister, WlllOW 3,338,149 8/1967 Hemery 95/89 R Ave., Peapack, NJ. 07977; Eugene 3,354,807 11/1967 Homer 95/89 R X J. Gaisser, Jr., 2 Circle Ten, Sparta, 3,593,641 7 1971 Adams et a1 118/120 x Primary Examiner-Richard L. Moses Attorney, Agent, or F irm-James E. Bryan and means for reciprocating said bar means transversely to the direction of plate travel.
ABSTRACT 4 Claims, 3 Drawing Figures DEVELOPER SUPPLY LINE DEVELOPER SUPPLY RECIPROCATOR 38 SHAFT J/VOLLME REGULATOR SPREADER BLADE PHETZTETESEP EH75 3 903541 SHEET 2 U? 3 FIG. 2
8 TRANSPORT ROLLS DEVELOPER PLATE TRAVEL RECIPROCATOR SHAFT E SUPPORT HEAD RAIL INVENTORS FREDERICK W. von MEISTER ENE J. GAISSER, JR.
R ERT C. GRAHAM ATTORNEY PATENTEU 2W5 3.963 541 SEZCET 3 OF 3 DEVELOPER SUPPLY LINE RECIPROCATOR 38 SHAFT SPRING IIII 1 1 INVEN FREDERICK W. von MEI EUGEEE J GAlSSER,J
ROB c. GRAHAM A TORNEY APPARATUS FOR PROCESSING PRINTING PLATES PRECOATED ON ONE SIDE ONLY This invention relates to an apparatus for processing a printing plate precoated on one side only, and more particularly relates to a dispensing apparatus for lithographic developer.
It has long been known in the lithographic industry that a subtractive presensitized offset printing plate may be developed by what is known as the hand developing process. In this process the carrier, which is usually a thin sheet of aluminum, is first coated by the manufacturer with a light-sensitive coating usually containing, among other things, one or more resins, and the plate is then sold in the presensitized condition to the customer.
The customer exposes the printing plate through a stencil to a source of strong light, such as a carbon are for example. The lightsensitive coating when subjected to such a light is converted in such a manner that, after development, the image areas are retained on the plate surface and the non-image areas are removed. After development, for example by rubbing a developing agent into the surface of the plate by means of a sponge, the plate may be fixed and/or washed and, finally. a coating of gum arabic or similar material is applied to the surface of the plate to protect the image free areas thereof. The plate is then ready for the printing press.
More specifically, where this hand developing process is employed to produce a printing plate, the following procedure is generally followed: From a typewritten setup or makeup, equivalent to the material to be printed and provided in any desired manner including typed articles. pictures of various kinds of art work of different sizes, and the like, all assembled onto a suitable cardboard or other support, a master is prepared in the conventional manner. The image of the master is then transferred onto the sensitized printing member, such as is described above, by a suitable exposure means.
The printing member thus prepared is then subjected to a developing operation using the chemistry prescribed by the manufacturer of the printing member. This chemistry" is worked into the exposed coating by hand rubbing, for example with a sponge, until the nonimage areas are subtracted or removed from the carrier leaving an exact replica of the image on the plate carrier. The printing member is then fixed and/or washed and a solution of gum arabic, or a similar solution, is applied to the plate surface, resulting in a printing plate which is ready for the press.
The disadvantages of hand development of offset printing plates are numerous. The process is slow and expensive. Uniformity of pressure in applying the de veloping solution to remove the undesired coating is almost impossible to attain and exposure to the developing solution is uneven. Thus, defective printing often results from an inadequate development or underdevelopment of an area or from applying varying pressure by hand, which may adversely affect the desired printing image. Drying of the developer on certain portions of the plate before it can be rubbed in to remove the undesired coating also may leave a residue on the plate. A further difficulty with the hand method is in the application of the developing solution. It is presently the practice of the craftman to pour a quantity of developer onto a developing sponge or pad and onto the center of the plate, which quantity is supposedly sufficient to process the plate, and the craftman then works his sponge from that reservoir. This procedure may lead to a high degree of contamination of the processing fluids by the removed photosensitive coating as well as a change in the chemistry of the fluid because of evaporation, which will, in turn, either reduce the efficiency of the chemistry, resulting in incomplete removal of the undesired coating in highly critical areas of halftones, or increase its potency resulting in image attack.
The present invention overcomes the difficulties associated with conventional hand developing of a plate coated on one side only by providing a novel dispensing apparatus for lithographic developer. The dispensing apparatus avoids changes in the processing solutions by a unique method of metering the processing fluids in controlled quantities onto the plate surface without damaging the plate surface, rendering it possible to economically use the processing solutions only once, and without smearing or dragging used solutions into fresh solutions or onto adjacent plate areas.
Prior to the present invention, there was no successful way to deposit a minimum amount of fluid automatically onto a printing plate for a one-time use of such fluid so that a machine operation was economical. Attempts were made to process plates by recirculating the fluids through conventional spraying systems onto the surface of the plate and by dipping the plate into tanks of fluids, but it has been characteristic of many such fluids to become prematurely weakened by unavoidable aeration or by contamination of spent material from the non-image areas, resulting in a short period of time in an unusable solution. Further, when only small quantities of fluid are required to process a plate, such as one ounce of fluid per square foot of plate surface, it is essential to hold fluid consumption at this level in order to avoid extra costs.
The problem of metering small quantities of fluid over a large surface area is effectively overcome by the novel dispensing apparatus of the present invention. In the novel apparatus, fluid is pumped under pressure into a manifold, which may have a width of about one inch and a height of about one-half inch. On the bottom of the manifold a plurality of apertures dispense the fluid, under pressure created by a pump, into a second bar which has a width of about one inch and a length corresponding to the width of the machine. The bottom bar contains a slot which may have a width of about 1/16 inch, for example. The bar is made of plastic so that it does not scratch the surface of the plate in contact therewith. The entire assembly is spring-loaded and rests on a backup plate made of hard rubber.
When the processing apparatus is actuated, a pair of nip rolls transport a plate into a developing station and between the backup plate and the dispensing apparatus. The pump pressure forces a quantity of developer into the slot in the dispensing apparatus and, since there is a backup plate facing and in contact with the spring-loaded bar of the dispensing apparatus, the slot in the bar fills with developer prior to the entrance of the plate and causes a slight rising of the entire assembly, by about 0.015 inch. with little or no outflow of the developer. This rise, in turn, allows the plate to enter between the bar and the backup plate without actually contacting the dispensing apparatus.
As the moving plate receives fluid developer from the slot in the bar and carries the developer away, the developer is constantly replaced from the manifold as a result of the pressure of the pump supplying developer from the reservoir. Simultaneously, this continuing feed of developer maintains the dispensing assembly above the surface of the plate to be developed and the inverted menicus created dispenses a minimum coating of developer, regulated by the pressure of the feed pump, uniformly upon the plate.
After passing the developing station, a reciprocating rubber squeegee assures that the developer is adequately rubbed into the surface of the plate. By proper composition of the developer, the action thereof can be made rather rapid so that shortly thereafter it can be squeegeed off and drained away into a waste disposal by a pair of squeegee rolls.
A second application of developer, if required, may be applied in a similar mechanism. A third similar mechanism can be employed to apply a fixing solution, if necessary, for the proper preparation of the plate. This may be combined with a rubbing action of a piece of velour-like material reciprocating transversely to the direction of plate travel at a rate of about 175 strokes per minute. in a stroke of about one-half inch. The plate then enters a washing station and a lacquering station, if required, followed by a second washing or gumming station before exiting from the apparatus as a completed plate ready for the printing press or for further work prior to going to the printing press.
The invention will be further illustrated by reference to the accompanying drawings in which FIG. I is a schematic view of a processing line for processing printing plates precoated on one side only,
FIG. 2 is a perspective view of a portion of the processing line of FIG. 1 showing the developer dispensing apparatus, and
FIG. 3 is a sectional view taken on line 33 of FIG. 2 and looking in the direction of the arrows.
Referring to FIG. I, a planographic printing plate sensitized on one side and imaged by exposure to a desired master is inserted into the processing line at the point of the arrow 2. The inserted plate passes over the trigger mechanism 4 and thus actuates the entire processing line, i.e., the feed rolls as well as all transportsqueegee rolls begin rotating. Simultaneously, pumps connected to the various chemical supply tanks, not shown, begin operating and dispensing chemistry as required. Also the developer dispensing apparatuses or heads as well as the rinse-scrubber head begin reciproeating.
The plate passes through a pair of feed rolls 6, which rolls pass the plate between the first developer dispens ing head 8 and its associated support rail 10, and a controlled amount of developer at a controlled temperature is dispensed from the developer dispensing head 8 onto the plate surface and carried away. This amount can be regulated by adjusting the pressure in the developer supply line by setting a bypass, not shown, and a volume regulator which will be described below in connection with FIG. 3.
Inasmuch as the entire developer dispensing head reciprocates, and since the dispensing head has a spreader blade 12 attached thereto, chemistry is evenly spread over the entire surface of the plate and adequately and completely rubbed into the surface of the plate coating.
The plate then passes through a first set of transportsqueegee rolls 14 which rolls transport the plate into the second developer dispensing assembly 16 having an associated backup plate 18. The construction of the second developer dispensing assembly 16 and its associated backup plate 18 is identical with the construction of the first developer dispensing head 8 and its associated backup plate 10.
The second developer dispensing head reapplies a fresh amount of developer solution in the same manner as the first developer dispensing head 8. With this arrangement, a rapid and thorough development of the plate is obtained inasmuch as the "chemistry" is previously adjusted to process the exposed image within the time allowed by the speed of the plate travel and the distance between each set of rolls.
The plate then reaches a second pair of transportsqueegee rolls 20 which remove all excess developer and, in turn, propel the plate under the rinse-scrubber head 22 which removes residual developer from the plate before it enters the third transport-squeegee roll assembly 24. The latter rolls advance the plate under the gum dispensing tube 26 and into the transportsqueegee rolls 28, which latter move the plate between the air dryer tubes 30 and into the exit rolls 32 which, in turn, propel the developed, gummed and dried planographic printing plate out of the processing line ready to be mounted on a press.
Referring to FIG. 2, a plate 34 is shown as it passes between the feed rolls 6 and under the first developer dispensing head 8. As will be seen from FIG. 2, developer is supplied through the developer line 36 and the dispensing head is reciprocated transversely to the direction of plate travel by means of the reciprocator shaft 38.
The dispensing head is shown in more detail in FIG. 3. The dispensing head includes the bottom bar 40 which abuts against the hard rubber surface 42 of the backup plate 10 when no plate is received between the two. The bottom bar 40 has a slot 44 therein which extends across the length of the bottom bar 40 but not completely to the ends thereof, so that developer pumped into the slot cannot run out of the ends thereof. The developer is supplied to the slot 44 by means of the passage 46 which connects to the reservoir 48 in the manifold 50. The reservoir 48 is connected to the developer supply line 36 by means of a bore in the rod 52. The rod 52 slides freely in the supporting bracket 54, to which the reciprocator shaft 38 is connected by the machine screws 56, and the entire assembly is reciprocated by the shaft 38 connected to a reciprocating apparatus, not shown.
The bar 40, which may be made of plastic, is biased against the surface of the plate 34 by means of the spring 58 and any degree of pressure desired may be obtained by balancing the spring pressure against the pressure of the developer supplied to the slot 44.
The volume of developer supplied to the slot 44 may be regulated by the developer supply volume regulator 60 having a hand wheel 62 thereon. The supply volume regulator is of conventional construction and, accordingly, will not be further described.
The entire processing line is enclosed in a housing, not shown.
The processing line is intended to be used with fresh chemistry at all times, i.e., there is no recirculation. By so doing, all parameters are maintained constant and since, in addition, the temperature of the developer is controlled to within 5F., processing of printing plates is predictable and reproducible.
It will be obvious to those skilled in the art that many modifications may be made within the scope of the present invention without departing from the spirit thereof, and the invention includes all such modifications.
What is claimed is:
l. A dispensing apparatus for lithographic processing fluids, comprising; bar means adapted to extend across a printing plate to be processed, having a single outlet means comprising a slot in that side of said bar means facing said plate to be processed and an inlet means in fluid communication with said outlet means, mounted to move perpendicular to the surface of said plate to be processed and normally biased toward the side of said plate to be processed; means for supplying processing fluid, under pressure sufficient to overcome the biasing of said bar means and move said bar means away from the surface of said plate to be processed; and means for reciprocating said bar means transversely to the direction of travel of said plate to be processed.
2. A dispensing apparatus according to claim 1 including spring means biasing said bar means toward a plate to be developed.
3. A dispensing apparatus according to claim 1 including spreader blade means secured to said bar means.
4. A dispensing apparatus in accordance with claim 1 wherein the bar means is biased toward the plate to be processed by means of a spring.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION PATENT NO. 3,903,541
DATED September 2, 1975 I INVENTOR(S) Frederick W. von Meister and Eugene J. Gaisser, Ir.
It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below: I
Item the name of. the third inventor, i.e. Robert C.
Graham, 10 Pierson Lane, Ptorham Park, New Jersey 07932 should be deleted.
Signed and Sealed this Arrest:
RUTH C. MASON C. MARSHALL DANN Arresting Officer Commissioner of Parents and Trademarks UNITED STATES PATENT OFFICE CERTIFICATE OF coRREcrr PATENT NO. I 3,903,541
DATED September 2, 1975 v INVENTOR(S) Frederick W. von Meister and Eugene I. Gaisser, Ir.
It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below: a t
Item the name ofjthe third inventor, i.e. Robert C. Graham, 10 Pierson Lane, Plorham Park, New Iersey 07932 should be deleted.
gigned and gcafied A nest:
RUTH C. MASON C. MARSHALL DANN Arresting Officer Commissioner nj'larents and Trademarks

Claims (4)

1. A dispensing apparatus for lithographic processing fluids, comprising; bar means adapted to extend across a printing plate to be processed, having a single outlet means comprising a slot in that side of said bar means facing said plate to be processed and an inlet means in fluid communication with said outlet means, mounted to move perpendicular to the surface of said plate to be processed and normally biased toward the side of said plate to be processed; means for supplying processing fluid, under pressure sufficient to overcome the biasing of said bar means and move said bar means away from the surface of said plate to be processed; and means for reciprocating said bar means transverseLy to the direction of travel of said plate to be processed.
2. A dispensing apparatus according to claim 1 including spring means biasing said bar means toward a plate to be developed.
3. A dispensing apparatus according to claim 1 including spreader blade means secured to said bar means.
4. A dispensing apparatus in accordance with claim 1 wherein the bar means is biased toward the plate to be processed by means of a spring.
US166474A 1971-07-27 1971-07-27 Apparatus for processing printing plates precoated on one side only Expired - Lifetime US3903541A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
BE786790D BE786790A (en) 1971-07-27 DEVICE FOR PROCESSING A LIGHT SENSITIVE AND EXPOSED FLAT PRINTING PLATE
US166474A US3903541A (en) 1971-07-27 1971-07-27 Apparatus for processing printing plates precoated on one side only
NL7209865A NL7209865A (en) 1971-07-27 1972-07-17
DE2235571A DE2235571A1 (en) 1971-07-27 1972-07-20 DEVICE USED FOR TREATING AN EXPOSED LIGHT-SENSITIVE FLAT PRINTED PLATE
AT635672A AT321321B (en) 1971-07-27 1972-07-24 Device for treating exposed photosensitive planographic printing plates
CA147,872A CA983760A (en) 1971-07-27 1972-07-25 Apparatus for processing printing plates precoated on one side only
IT51762/72A IT961701B (en) 1971-07-27 1972-07-26 EQUIPMENT FOR TREATING IMPRESSED PHOTOSENSITIVE PLANOGRAPHIC SHEETS
JP47075484A JPS4829505A (en) 1971-07-27 1972-07-27
GB3527572A GB1403224A (en) 1971-07-27 1972-07-27 Apparatus for treating an exposed light-sensitive planographic printing plate

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US166474A US3903541A (en) 1971-07-27 1971-07-27 Apparatus for processing printing plates precoated on one side only

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US3903541A true US3903541A (en) 1975-09-02

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US (1) US3903541A (en)
JP (1) JPS4829505A (en)
AT (1) AT321321B (en)
BE (1) BE786790A (en)
CA (1) CA983760A (en)
DE (1) DE2235571A1 (en)
GB (1) GB1403224A (en)
IT (1) IT961701B (en)
NL (1) NL7209865A (en)

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4119991A (en) * 1977-04-08 1978-10-10 Peter Vincent Martino Horizontal one step automatic plate processor
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US6943920B2 (en) 2000-02-03 2005-09-13 Eastman Kodak Company Method, system, and software for signal processing using pyramidal decomposition
US6965692B1 (en) 1999-12-30 2005-11-15 Eastman Kodak Company Method and apparatus for improving the quality of reconstructed information
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Cited By (78)

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US4179208A (en) * 1977-04-08 1979-12-18 Martino Peter V Horizontal one step automatic plate processor
US4119991A (en) * 1977-04-08 1978-10-10 Peter Vincent Martino Horizontal one step automatic plate processor
US4345543A (en) * 1978-02-23 1982-08-24 International Business Machines Corporation Apparatus for forming a coating on a substrate
US4190345A (en) * 1978-07-14 1980-02-26 Scott Paper Company Lithographic plate processing apparatus
US4203655A (en) * 1979-01-02 1980-05-20 Polaroid Corporation Tapered pressure pad to prevent film scratching
US4215927A (en) * 1979-04-13 1980-08-05 Scott Paper Company Lithographic plate processing apparatus
US4332873A (en) * 1979-08-22 1982-06-01 Hercules Incorporated Multilayer printing plates and process for making same
US4403566A (en) * 1980-06-23 1983-09-13 Hercules Incorporated Apparatus for producing a printing plate
US4383759A (en) * 1980-06-23 1983-05-17 Hercules Incorporated Method and apparatus for producing a capped printing plate
US4332454A (en) * 1981-01-09 1982-06-01 American Hoechst Corporation Assembly for processing a photosensitive material
US4450226A (en) * 1981-10-26 1984-05-22 Hercules Incorporated Method and apparatus for producing a printing plate
FR2539652A1 (en) * 1983-01-24 1984-07-27 Kao Corp METHOD AND APPARATUS FOR COATING
US4520049A (en) * 1983-01-24 1985-05-28 Kao Corporation Method and apparatus for coating
US4837131A (en) * 1985-06-27 1989-06-06 Fuji Photo Film Co., Ltd. Developing method for photosensitive material
EP0206308A1 (en) * 1985-06-27 1986-12-30 Fuji Photo Film Co., Ltd. Developing method for photosensitive material
US4841320A (en) * 1986-12-23 1989-06-20 Fuji Photo Film Co., Ltd. Developing device for photosensitive material
WO1991008519A1 (en) * 1989-11-28 1991-06-13 Delphi Technology, Inc. Slotted processing apparatus and method
US5353088A (en) * 1993-05-03 1994-10-04 Eastman Kodak Company Automatic tray processor
US5400106A (en) * 1993-05-03 1995-03-21 Eastman Kodak Company Automatic tray processor
US6503002B1 (en) 1996-12-05 2003-01-07 Applied Science Fiction, Inc. Method and apparatus for reducing noise in electronic film development
US6558052B2 (en) 1997-01-30 2003-05-06 Applied Science Fiction, Inc. System and method for latent film recovery in electronic film development
US6512601B1 (en) 1998-02-23 2003-01-28 Applied Science Fiction, Inc. Progressive area scan in electronic film development
US6594041B1 (en) 1998-11-20 2003-07-15 Applied Science Fiction, Inc. Log time processing and stitching system
US6781620B1 (en) 1999-03-16 2004-08-24 Eastman Kodak Company Mixed-element stitching and noise reduction system
WO2001001197A1 (en) * 1999-06-29 2001-01-04 Applied Science Fiction, Inc. Slot coating device for electronic film development
US6443639B1 (en) * 1999-06-29 2002-09-03 Applied Science Fiction, Inc. Slot coater device for applying developer to film for electronic film development
US6439784B1 (en) 1999-08-17 2002-08-27 Applied Science Fiction, Inc. Method and system for using calibration patches in electronic film processing
US6915021B2 (en) 1999-12-17 2005-07-05 Eastman Kodak Company Method and system for selective enhancement of image data
US20010031084A1 (en) * 1999-12-17 2001-10-18 Cannata Philip E. Method and system for selective enhancement of image data
US6505977B2 (en) 1999-12-30 2003-01-14 Applied Science Fiction, Inc. System and method for digital color dye film processing
US6554504B2 (en) 1999-12-30 2003-04-29 Applied Science Fiction, Inc. Distributed digital film processing system and method
US6461061B2 (en) 1999-12-30 2002-10-08 Applied Science Fiction, Inc. System and method for digital film development using visible light
US6965692B1 (en) 1999-12-30 2005-11-15 Eastman Kodak Company Method and apparatus for improving the quality of reconstructed information
US6793417B2 (en) 1999-12-30 2004-09-21 Eastman Kodak Company System and method for digital film development using visible light
US20010030685A1 (en) * 1999-12-30 2001-10-18 Darbin Stephen P. Method and apparatus for digital film processing using a scanning station having a single sensor
US20030002879A1 (en) * 1999-12-30 2003-01-02 Corbin Douglas E. System and method for digital film development using visible light
US6447178B2 (en) 1999-12-30 2002-09-10 Applied Science Fiction, Inc. System, method, and apparatus for providing multiple extrusion widths
US6705777B2 (en) 1999-12-30 2004-03-16 Eastman Kodak Company System and method for digital film development using visible light
US6707557B2 (en) 1999-12-30 2004-03-16 Eastman Kodak Company Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities
US6540416B2 (en) 1999-12-30 2003-04-01 Applied Science Fiction, Inc. System and method for digital film development using visible light
US6788335B2 (en) 1999-12-30 2004-09-07 Eastman Kodak Company Pulsed illumination signal modulation control & adjustment method and system
US20020051215A1 (en) * 1999-12-30 2002-05-02 Thering Michael R. Methods and apparatus for transporting and positioning film in a digital film processing system
US20050128474A1 (en) * 1999-12-30 2005-06-16 Young Robert S.Jr. Method and apparatus to pre-scan and pre-treat film for improved digital film processing handling
US6864973B2 (en) 1999-12-30 2005-03-08 Eastman Kodak Company Method and apparatus to pre-scan and pre-treat film for improved digital film processing handling
US6813392B2 (en) 1999-12-30 2004-11-02 Eastman Kodak Company Method and apparatus for aligning multiple scans of the same area of a medium using mathematical correlation
US20030142975A1 (en) * 1999-12-30 2003-07-31 Edgar Albert D. System and method for digital film development using visible light
US6824966B2 (en) 1999-12-31 2004-11-30 Eastman Kodak Company Digital film processing method
US6664034B2 (en) 1999-12-31 2003-12-16 Eastman Kodak Company Digital film processing method
US20050008981A1 (en) * 1999-12-31 2005-01-13 Keyes Michael P. Digital film processing method
US20020080409A1 (en) * 1999-12-31 2002-06-27 Keyes Michael P. Digital film processing method
US6910816B2 (en) 1999-12-31 2005-06-28 Eastman Kodak Company Digital film processing method
US20040053175A1 (en) * 1999-12-31 2004-03-18 Keyes Michael P. Digital film processing method
US6475711B1 (en) 1999-12-31 2002-11-05 Applied Science Fiction, Inc. Photographic element and digital film processing method using same
US20010043755A1 (en) * 2000-02-03 2001-11-22 Edgar Albert D. Match blur system and method
US20010040701A1 (en) * 2000-02-03 2001-11-15 Edgar Albert D. Photographic film having time resolved sensitivity distinction
US6786655B2 (en) 2000-02-03 2004-09-07 Eastman Kodak Company Method and system for self-service film processing
US7020344B2 (en) 2000-02-03 2006-03-28 Eastman Kodak Company Match blur system and method
US20040076425A1 (en) * 2000-02-03 2004-04-22 Patterson Richard A. Film processing solution cartridge and method for developing and digitizing film
US6990251B2 (en) 2000-02-03 2006-01-24 Eastman Kodak Company Method, system, and software for signal processing using sheep and shepherd artifacts
US6943920B2 (en) 2000-02-03 2005-09-13 Eastman Kodak Company Method, system, and software for signal processing using pyramidal decomposition
US6619863B2 (en) 2000-02-03 2003-09-16 Eastman Kodak Company Method and system for capturing film images
US6599036B2 (en) 2000-02-03 2003-07-29 Applied Science Fiction, Inc. Film processing solution cartridge and method for developing and digitizing film
US6913404B2 (en) 2000-02-03 2005-07-05 Eastman Kodak Company Film processing solution cartridge and method for developing and digitizing film
US20060182337A1 (en) * 2000-06-28 2006-08-17 Ford Benjamin C Method and apparatus for improving the quality of reconstructed information
US20020118402A1 (en) * 2000-09-19 2002-08-29 Shaw Timothy C. Film bridge for digital film scanning system
US20020176113A1 (en) * 2000-09-21 2002-11-28 Edgar Albert D. Dynamic image correction and imaging systems
US20020126327A1 (en) * 2000-09-21 2002-09-12 Edgar Albert D. Method and system for improving scanned image detail
US7016080B2 (en) 2000-09-21 2006-03-21 Eastman Kodak Company Method and system for improving scanned image detail
US20020146171A1 (en) * 2000-10-01 2002-10-10 Applied Science Fiction, Inc. Method, apparatus and system for black segment detection
US6888997B2 (en) 2000-12-05 2005-05-03 Eastman Kodak Company Waveguide device and optical transfer system for directing light to an image plane
US20040047585A1 (en) * 2000-12-05 2004-03-11 Duong Dung T. Light transfer device and system
US6733960B2 (en) 2001-02-09 2004-05-11 Eastman Kodak Company Digital film processing solutions and method of digital film processing
US6805501B2 (en) 2001-07-16 2004-10-19 Eastman Kodak Company System and method for digital film development using visible light
US6916125B2 (en) 2001-07-16 2005-07-12 Eastman Kodak Company Method for film inspection and development
US20030133710A1 (en) * 2001-07-16 2003-07-17 Winberg Paul N. System and method for digital film development using visible light
US20040170425A1 (en) * 2001-07-16 2004-09-02 Winberg Paul N. System and method for digital film development using visible light
US7263240B2 (en) 2002-01-14 2007-08-28 Eastman Kodak Company Method, system, and software for improving signal quality using pyramidal decomposition
US20060192857A1 (en) * 2004-02-13 2006-08-31 Sony Corporation Image processing device, image processing method, and program

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NL7209865A (en) 1973-01-30
BE786790A (en) 1973-01-26
DE2235571A1 (en) 1973-03-29
CA983760A (en) 1976-02-17
GB1403224A (en) 1975-08-28
AT321321B (en) 1975-03-25
JPS4829505A (en) 1973-04-19
IT961701B (en) 1973-12-10

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