US20080068433A1 - Print Medium Having A Ribbed Structure - Google Patents

Print Medium Having A Ribbed Structure Download PDF

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Publication number
US20080068433A1
US20080068433A1 US11/927,403 US92740307A US2008068433A1 US 20080068433 A1 US20080068433 A1 US 20080068433A1 US 92740307 A US92740307 A US 92740307A US 2008068433 A1 US2008068433 A1 US 2008068433A1
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US
United States
Prior art keywords
print medium
medium according
film surface
film
method includes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/927,403
Inventor
Kia Silverbrook
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Silverbrook Research Pty Ltd
Original Assignee
Silverbrook Research Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Silverbrook Research Pty Ltd filed Critical Silverbrook Research Pty Ltd
Priority to US11/927,403 priority Critical patent/US20080068433A1/en
Assigned to SILVERBROOK RESEARCH PTY LTD reassignment SILVERBROOK RESEARCH PTY LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SILVERBROOK, KIA
Publication of US20080068433A1 publication Critical patent/US20080068433A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
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    • B41J2/01—Ink jet
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    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2002/041—Electromagnetic transducer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • G06F2221/2129—Authenticate client device independently of the user
    • H—ELECTRICITY
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2101/00—Still video cameras
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    • Y10T428/249947—Polymeric fiber

Definitions

  • the present invention relates to an image processing method and apparatus and, in particular, discloses an anisotropic media—ridged/fibre.
  • the present invention relates to print media and discloses a process of treatment so as to reduce the likelihood of “curling” in print media.
  • the print media upon which an image is to be printed can be stored on a small roll 3 for an indefinite period of time.
  • the storage on the roll 3 can often impart a semi-permanent “curl” to the paper 4 .
  • a portion of the roll 3 is unrolled as required and an image 5 is deposited on the media by means of printing and/or photographic imaging.
  • the print media with its image 5 is normally held in place by means of rollers so as to ensure an accurate, flat, plane surface is provided for any imaging device utilising the print media.
  • the print media is normally cut into desired length and stacked in a “sheet” form 6 .
  • a print roll for a digital camera with inbuilt printhead comprising:
  • the print media incorporates fibers configured such that the media has a stiffness in a first direction that exceeds the stiffness in a second direction that is perpendicular to the first direction.
  • the fibers are extruded polymer strands.
  • the print media is formed by adhering the strands to one side of a paper substrate.
  • the strands are configured substantially parallel to the longitudinal axis of the roll.
  • FIG. 1 illustrates schematically a method of creation of images on print media
  • FIG. 2 and FIG. 2A illustrate the structure of the print media constructed in accordance with the present invention
  • FIG. 3 illustrates utilization of the print media constructed in accordance with the preferred embodiment
  • FIG. 4 and FIG. 4A illustrate a first form of construction of print media in accordance with the preferred embodiment
  • FIG. 5 illustrates a further form of construction of print media in accordance with the present invention
  • FIGS. 6 and 7 illustrate schematic cross-sectional views of a further form of construction of print media in accordance with the present invention
  • FIG. 8 illustrates one form of manufacture of the print media construction in accordance with FIG. 6 and 7 ;
  • FIG. 9 illustrates an alternative form of manufacture by extruding fibrous material for utilization with the arrangement of FIG. 8 .
  • the print media to be stored in a tightly rolled form is processed to have an anisotropic ribbed structure which allows the print media to be suitable for carriage in a roll form but further allows for the anisotropic rib structure to be utilized when viewing images printed on the print media so as to reduce the extent of curling of the print media.
  • FIG. 2 there is illustrated a sheet 10 of print media 11 as treated in accordance with the principles of the present invention.
  • the sheet 10 is preferably constructed of a plastic planar film although other forms of film 11 would be suitable.
  • the sheet 10 is pre-treated to have a polymer rib-like structure 12 shown in FIG. 2 in an exaggerated form with the actual column pitch being approximately 200 ⁇ m.
  • one surface of the sheet 10 is treated so as to have a series of columns e.g. 12 running up and down the length of the sheet 10 , the cross-section of the column 12 being illustrated in an enlarged form in FIG. 2 a.
  • the advantage of utilizing the series of columns or ribs 12 is evident when a force 13 is applied to a portion of the surface area of the sheet 10 .
  • the column 12 although allowing the sheet 10 to be rolled tightly, resists any rolling of the sheet 10 in the direction 16 .
  • any force applied 13 is likely to be transmitted both in directions 15 and 16 .
  • the anisotropic nature of the sheet 10 will result in the ribs 12 acting to provide support both in directions 15 and 16 thereby limiting the curl of sheet 10 .
  • the resistance is primarily due to the resistance of ribs 12 from any bending in the direction 16 .
  • the anisotropic strength of the material also allows it to be stored on a roll with the greater strength axis being along the central axis of the roll.
  • the image on sheet 10 can then be viewed, with reduced effects due to curling, by merely holding the sheet 10 in a user's hands 20 , 21 and applying subtle pressure at points 24 , 25 .
  • the application of pressure at points 24 , 25 is transmitted throughout the sheet 10 thereby providing a flat viewing surface with limited curling.
  • the anisotropic media can be produced utilizing a number of techniques where the media comprises a plastic type material.
  • the media could be produced by methods of extrusion.
  • other techniques can be utilized.
  • one form of production 40 is illustrated schematically in FIG. 4 and relies upon the media 41 being pressed between rollers 42 , 43 .
  • the roller 43 has a flat surface with the roller 42 having a serrated surface 45 as illustrated in FIG. 4 a .
  • the dimensions of the serration are exaggerated in FIG. 4 for illustrative purposes.
  • the anisotropic media can be provided by utilizing two film surfaces joined together.
  • Such a process 50 is illustrated in FIG. 5 wherein a first surface 51 upon which it is desired to print an image is mated with a second surface 52 by means of glue, heat fusion etc. as required.
  • print media 60 is shown in cross-section and could be constructed from a first fibrous material 61 which can comprise strong polymer based fibres constructed from annealed polyethylene napthalate drawn into a fibrous form.
  • a second heat flowable polymer 62 which can comprise polyethylene is utilized to provide the “paper” base for the carriage of ink/imaging chemicals.
  • the media polymer 62 can be compressed with the fibrous material 61 while still in a viscous form (for example, after being heated) so that the fibre 61 and print base 62 form one integral unit as illustrated in FIG. 7 .
  • the arrangement of FIGS. 6 and 7 can be constructed in accordance with a number of techniques.
  • FIG. 8 there is illustrated a first such technique which utilizes pre-formed spools e.g. 80 of fibrous material, the number of spools and corresponding fibres 81 being equivalent in number to the length of the desired print roll.
  • the spools 80 are ranged such that corresponding fibres 81 are fed over a first roller 82 .
  • the fibres 81 are then drawn past a print media application unit 84 which applies the layer of viscous heated print media to the fibres.
  • rollers 85 , 86 apply the necessary pressure to the fibres and print media so as to fuse the two together and flatten the surface of the print media so as to form a final anisotropic surface 88 .
  • the surface 88 is cut across its width and rolled to form anisotropic print media as hereinbefore described.
  • FIG. 9 there is illustrated one form of creating an extruded fibrous material by means of drawing fibre e.g. 91 from a vat 90 , the arrangement of FIG. 9 designed to replace the need for spools 80 of FIG. 8 .

Abstract

A print medium comprising a planar film including a printing surface and a ribbed structure defining a plurality of ribs which extend from a first end of the planar film to an opposing end of the planar film. The plurality of ribs restrict curling in a first direction of the print medium and facilitate rolling of the print medium in an orthogonal direction.

Description

    CROSS REFERENCES TO RELATED APPLICATIONS
  • The present application is a Continuation of U.S. application Ser. No. 11/650,548 filed on Jan. 8, 2007, which is a Continuation of U.S. application Ser. No. 11/442,182, filed on May 30, 2006, now granted U.S. Pat. No. 7,186,499, which is a Continuation of U.S. application Ser. No. 11/072,530, filed on Mar. 7, 2005, now granted U.S. Pat. No. 7,063,940, which is a Continuation of U.S. application Ser. No. 10/853,184 filed May 26, 2004 now granted U.S. Pat. No. 6,913,875, which is a Continuation in Part of U.S. application Ser. No. 10/274,118 filed Oct. 21, 2002, now granted U.S. Pat. No. 6,773,874, which is a Continuation application of U.S. application Ser. No. 09/112,744, filed on Jul. 10, 1998, now granted U.S. Pat. No. 6,472,052, all of which are herein incorporated by reference. The following Australian provisional patent applications are hereby incorporated by cross-reference. For the purposes of location and identification, U.S. patents/patent applications identified by their U.S. patent/patent application serial numbers are listed alongside the Australian applications from which the U.S. patents/patent applications claim the right of priority.
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    PO7946 6044646 MEMS10US
    PP0894 6382769 MEMS13US
    • STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
  • Not applicable.
    • FIELD OF THE INVENTION
  • The present invention relates to an image processing method and apparatus and, in particular, discloses an anisotropic media—ridged/fibre.
  • The present invention relates to print media and discloses a process of treatment so as to reduce the likelihood of “curling” in print media.
    • BACKGROUND OF THE INVENTION
  • Recently, it has become more and more popular in respect of photographic reproduction techniques to produce longer and longer “panoramic” views of an image. These images can be produced on photographic paper or the like and the structure of the image is normally to have longer and longer lengths in comparison to the width so as to produce the more “panoramic” type views.
  • Unfortunately, this imposes a problem where the photographic paper to be imaged upon originally was stored on a roll of small diameter.
  • For example, referring to FIG. 1, the print media upon which an image is to be printed can be stored on a small roll 3 for an indefinite period of time. The storage on the roll 3 can often impart a semi-permanent “curl” to the paper 4. Subsequently, a portion of the roll 3 is unrolled as required and an image 5 is deposited on the media by means of printing and/or photographic imaging. The print media with its image 5 is normally held in place by means of rollers so as to ensure an accurate, flat, plane surface is provided for any imaging device utilising the print media. At a subsequent phase of the processing the print media is normally cut into desired length and stacked in a “sheet” form 6.
  • However, when the print media is stored for long periods of time in a tightly curled roll, the print media 4 can take on a memory characteristic due to being curled around roller 3 for the extended period of time. Hence, images produced utilizing this process can often include an unwanted curl 7 consequential upon being tightly curled around roll 3. This is generally an undesirable characteristic. Of course, one way to overcome this problem is to increase the circumference of roll 3 and to thereby flatten the circumference of any paper roll around the roll 3. However, increasing the circumference of roll 3 is not desirable should it be required to include the roll 3 in a portable hand held type camera device. The portable nature of such a device requires as small a roll 3 as possible thereby leading to increasing levels of curl.
    • SUMMARY OF THE INVENTION
  • It is an object of the present invention to provide a form of print media having reduced curl characteristics.
  • In accordance with the first aspect of the present invention there is provided a print roll for a digital camera with inbuilt printhead, the print roll comprising:
  • a roll of print media having a surface on which the printhead can print an image captured by the digital camera; wherein,
  • the print media incorporates fibers configured such that the media has a stiffness in a first direction that exceeds the stiffness in a second direction that is perpendicular to the first direction.
  • Preferably, the fibers are extruded polymer strands.
  • Preferably, the print media is formed by adhering the strands to one side of a paper substrate.
  • Preferably, the print media is formed by sandwiching the strands between two paper substrates.
  • Preferably, the strands are configured substantially parallel to the longitudinal axis of the roll.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Notwithstanding any other forms which may fall within the scope of the present invention, preferred forms of the invention will now be described, by way of example only, with reference to the accompanying drawings which:
  • FIG. 1 illustrates schematically a method of creation of images on print media;
  • FIG. 2 and FIG. 2A illustrate the structure of the print media constructed in accordance with the present invention;
  • FIG. 3 illustrates utilization of the print media constructed in accordance with the preferred embodiment;
  • FIG. 4 and FIG. 4A illustrate a first form of construction of print media in accordance with the preferred embodiment;
  • FIG. 5 illustrates a further form of construction of print media in accordance with the present invention;
  • FIGS. 6 and 7 illustrate schematic cross-sectional views of a further form of construction of print media in accordance with the present invention;
  • FIG. 8 illustrates one form of manufacture of the print media construction in accordance with FIG. 6 and 7; and
  • FIG. 9 illustrates an alternative form of manufacture by extruding fibrous material for utilization with the arrangement of FIG. 8.
    • DESCRIPTION OF PREFERRED AND OTHER EMBODIMENTS
  • In the preferred embodiment of the present invention, the print media to be stored in a tightly rolled form is processed to have an anisotropic ribbed structure which allows the print media to be suitable for carriage in a roll form but further allows for the anisotropic rib structure to be utilized when viewing images printed on the print media so as to reduce the extent of curling of the print media.
  • Referring now to FIG. 2, there is illustrated a sheet 10 of print media 11 as treated in accordance with the principles of the present invention. The sheet 10 is preferably constructed of a plastic planar film although other forms of film 11 would be suitable. The sheet 10 is pre-treated to have a polymer rib-like structure 12 shown in FIG. 2 in an exaggerated form with the actual column pitch being approximately 200 μm. Hence, one surface of the sheet 10 is treated so as to have a series of columns e.g. 12 running up and down the length of the sheet 10, the cross-section of the column 12 being illustrated in an enlarged form in FIG. 2 a.
  • The advantage of utilizing the series of columns or ribs 12 is evident when a force 13 is applied to a portion of the surface area of the sheet 10. The column 12, although allowing the sheet 10 to be rolled tightly, resists any rolling of the sheet 10 in the direction 16. Hence, any force applied 13 is likely to be transmitted both in directions 15 and 16. The anisotropic nature of the sheet 10 will result in the ribs 12 acting to provide support both in directions 15 and 16 thereby limiting the curl of sheet 10. The resistance is primarily due to the resistance of ribs 12 from any bending in the direction 16. The anisotropic strength of the material also allows it to be stored on a roll with the greater strength axis being along the central axis of the roll.
  • Referring now to FIG. 3, the image on sheet 10 can then be viewed, with reduced effects due to curling, by merely holding the sheet 10 in a user's hands 20, 21 and applying subtle pressure at points 24, 25. The application of pressure at points 24, 25 is transmitted throughout the sheet 10 thereby providing a flat viewing surface with limited curling.
  • Of course, the anisotropic media can be produced utilizing a number of techniques where the media comprises a plastic type material. For example, it could be produced by methods of extrusion. Alternatively, other techniques can be utilized. For example, one form of production 40 is illustrated schematically in FIG. 4 and relies upon the media 41 being pressed between rollers 42, 43. The roller 43 has a flat surface with the roller 42 having a serrated surface 45 as illustrated in FIG. 4 a. The dimensions of the serration are exaggerated in FIG. 4 for illustrative purposes.
  • Where the media is unsuitable for utilization in such a process 40, the anisotropic media can be provided by utilizing two film surfaces joined together. Such a process 50 is illustrated in FIG. 5 wherein a first surface 51 upon which it is desired to print an image is mated with a second surface 52 by means of glue, heat fusion etc. as required.
  • Furthermore, other forms of manufacture of the print media 11 are possible. For example, referring to FIGS. 6 and 7, the construction of print media 60 is shown in cross-section and could be constructed from a first fibrous material 61 which can comprise strong polymer based fibres constructed from annealed polyethylene napthalate drawn into a fibrous form. A second heat flowable polymer 62 which can comprise polyethylene is utilized to provide the “paper” base for the carriage of ink/imaging chemicals. The media polymer 62 can be compressed with the fibrous material 61 while still in a viscous form (for example, after being heated) so that the fibre 61 and print base 62 form one integral unit as illustrated in FIG. 7. The arrangement of FIGS. 6 and 7 can be constructed in accordance with a number of techniques.
  • Referring now to FIG. 8, there is illustrated a first such technique which utilizes pre-formed spools e.g. 80 of fibrous material, the number of spools and corresponding fibres 81 being equivalent in number to the length of the desired print roll. The spools 80 are ranged such that corresponding fibres 81 are fed over a first roller 82. The fibres 81 are then drawn past a print media application unit 84 which applies the layer of viscous heated print media to the fibres. Subsequently, rollers 85, 86 apply the necessary pressure to the fibres and print media so as to fuse the two together and flatten the surface of the print media so as to form a final anisotropic surface 88. Subsequently, the surface 88 is cut across its width and rolled to form anisotropic print media as hereinbefore described.
  • Of course, alternative forms of creating the fibrous material on demand are possible. For example, in FIG. 9, there is illustrated one form of creating an extruded fibrous material by means of drawing fibre e.g. 91 from a vat 90, the arrangement of FIG. 9 designed to replace the need for spools 80 of FIG. 8.
  • It would be obvious to those skilled in a the art that other forms of forming the anisotropic surface may be possible, the foregoing describing only a number of embodiments. Further modifications, obvious to those skilled in the art, can be made to the composition and structure of the anisotropic print media without departing from the scope of the invention as disclosed in the following claims.

Claims (21)

1. A print medium comprising a planar film including a printing surface and a ribbed structure defining a plurality of ribs which extend from a first end of the planar film to an opposing end of the planar film, wherein the plurality of ribs restrict curling in a first direction and facilitate rolling in an orthogonal direction.
2. The print medium according to claim 1, in which the planar film is of a plastics material.
3. The print medium according to claim 1, in which the ribbed structure is of a polymeric material.
4. The print medium according to claim 1, wherein each rib includes a substantially semi-circular cross-section.
5. The print medium according to claim 4, wherein a pitch of the each rib is approximately 200 micrometers.
6. The print medium according to claim 1, wherein the print medium is provided is a roll of the planar film.
7. The print medium according to claim 6, wherein the roll of planar film is for a digital camera including a printhead which is capable of printing on the printing surface.
8. The print medium according to claim 1, wherein the ribbed structure includes fibers.
9. The print medium according to claim 8, wherein the fibers are extruded polymer strands.
10. The print medium according to claim 9, the extruded polymer strands is drawn annealed polyethylene napthalate.
11. The print medium according to claim 1, wherein the ribs are substantially parallel to the longitudinal axis of the print medium.
12. The print medium according to claim 1, wherein the ribbed structure form a corrugated surface opposite to the printing surface.
13. A method of manufacturing the print medium according to claim 1, wherein the method includes extruding a plastic material between a pair of rollers, wherein one of the rollers includes a serrated surface to form the ribbed structure.
14. A method of manufacturing the print medium according to claim 1, wherein the method includes layering a first film surface on a second film surface, wherein one of the first film surface and the second film surface includes the ribbed structure, and wherein the first film surface integrally binds to the second film surface to form the print medium.
15. The method according to claim 14, wherein the method includes gluing the first film surface to the second film surface.
16. The method according to claim 14, wherein the method includes heat fusing the first film surface and the second film surface.
15. A method of manufacturing the print medium according to claim 1, wherein the method includes:
heat treating a polymer material to form a viscous material;
compressing a fibrous material into the viscous material, wherein the viscous material subsequently cools, the fibrous material is integral with the polymer material to form the print medium.
16. The method according to claim 15, wherein the method includes using a roller to compress the fibrous material into the viscous material.
17. The method according to claim 16, wherein the method includes drawing the fibrous material from a plurality of spools.
18. The method according to claim 17, wherein the fibrous material is drawn from the plurality of spools over a roller, wherein a layer of heated print media is applied to the fibrous material withdrawn from the spools.
19. The method according to claim 19, wherein the method includes rolling the print media according to the orthogonal direction into a print media roll.
US11/927,403 1997-07-15 2007-10-29 Print Medium Having A Ribbed Structure Abandoned US20080068433A1 (en)

Priority Applications (1)

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US11/927,403 US20080068433A1 (en) 1997-07-15 2007-10-29 Print Medium Having A Ribbed Structure

Applications Claiming Priority (9)

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AUPO8019 1997-07-15
AUPO8019A AUPO801997A0 (en) 1997-07-15 1997-07-15 Media processing method and apparatus (ART21)
US09/112,744 US6472052B1 (en) 1997-07-15 1998-07-10 Digital camera print roll with periodic anisotropic stiffness
US10/274,118 US6773874B2 (en) 1997-07-15 2002-10-21 Digital print media output with reduced residual curl
US10/853,184 US6913875B2 (en) 1997-07-15 2004-05-26 Curl resistant print media
US11/072,530 US7063940B2 (en) 1997-07-15 2005-03-07 Curl resistant media
US11/442,182 US7186499B2 (en) 1997-07-15 2006-05-30 Print medium with anisotropic bending properties
US11/650,548 US7291447B2 (en) 1997-07-15 2007-01-08 Print medium with one side defined by a rib-like structure
US11/927,403 US20080068433A1 (en) 1997-07-15 2007-10-29 Print Medium Having A Ribbed Structure

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US09/112,744 Expired - Lifetime US6472052B1 (en) 1997-07-15 1998-07-10 Digital camera print roll with periodic anisotropic stiffness
US10/274,118 Expired - Fee Related US6773874B2 (en) 1997-07-15 2002-10-21 Digital print media output with reduced residual curl
US10/853,184 Expired - Fee Related US6913875B2 (en) 1997-07-15 2004-05-26 Curl resistant print media
US11/072,530 Expired - Fee Related US7063940B2 (en) 1997-07-15 2005-03-07 Curl resistant media
US11/442,182 Expired - Fee Related US7186499B2 (en) 1997-07-15 2006-05-30 Print medium with anisotropic bending properties
US11/650,548 Expired - Lifetime US7291447B2 (en) 1997-07-15 2007-01-08 Print medium with one side defined by a rib-like structure
US11/927,403 Abandoned US20080068433A1 (en) 1997-07-15 2007-10-29 Print Medium Having A Ribbed Structure

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US09/112,744 Expired - Lifetime US6472052B1 (en) 1997-07-15 1998-07-10 Digital camera print roll with periodic anisotropic stiffness
US10/274,118 Expired - Fee Related US6773874B2 (en) 1997-07-15 2002-10-21 Digital print media output with reduced residual curl
US10/853,184 Expired - Fee Related US6913875B2 (en) 1997-07-15 2004-05-26 Curl resistant print media
US11/072,530 Expired - Fee Related US7063940B2 (en) 1997-07-15 2005-03-07 Curl resistant media
US11/442,182 Expired - Fee Related US7186499B2 (en) 1997-07-15 2006-05-30 Print medium with anisotropic bending properties
US11/650,548 Expired - Lifetime US7291447B2 (en) 1997-07-15 2007-01-08 Print medium with one side defined by a rib-like structure

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US20030056668A1 (en) 2003-03-27
US7063940B2 (en) 2006-06-20
US20040214116A1 (en) 2004-10-28
US20070110967A1 (en) 2007-05-17
US6472052B1 (en) 2002-10-29
US20060216483A1 (en) 2006-09-28
US20050153112A1 (en) 2005-07-14
US7291447B2 (en) 2007-11-06
AUPO801997A0 (en) 1997-08-07
US6913875B2 (en) 2005-07-05
US6773874B2 (en) 2004-08-10
US7186499B2 (en) 2007-03-06

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