CA1127228A - Method of recording by jet printing - Google Patents
Method of recording by jet printingInfo
- Publication number
- CA1127228A CA1127228A CA335,534A CA335534A CA1127228A CA 1127228 A CA1127228 A CA 1127228A CA 335534 A CA335534 A CA 335534A CA 1127228 A CA1127228 A CA 1127228A
- Authority
- CA
- Canada
- Prior art keywords
- jet
- ink
- recording
- information
- recorded information
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/36—Inkjet printing inks based on non-aqueous solvents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
Abstract
ABSTRACT OF THE DISCLOSURE
Opaque ink compositions suitable for ink jet printing on metal, plastic, or paper surfaces, the ink characterized by opaque properties in light, incorporating, in solution at least one cellulosic derivative, a resin component, and at least one solvent, proportioned to give the ink property of opacity.
According to another of its aspects, this invention is a process for information recording comprising producing a fine jet of liquid, directing said jet of liquid onto a recording medium, modulating the density of said applied jet by an electric field in accordance with the information to be recorded, there-by recording said information, and thereafter applying moisture to said recording medium bearing said recorded, thereby render-ing said recording opaque.
Opaque ink compositions suitable for ink jet printing on metal, plastic, or paper surfaces, the ink characterized by opaque properties in light, incorporating, in solution at least one cellulosic derivative, a resin component, and at least one solvent, proportioned to give the ink property of opacity.
According to another of its aspects, this invention is a process for information recording comprising producing a fine jet of liquid, directing said jet of liquid onto a recording medium, modulating the density of said applied jet by an electric field in accordance with the information to be recorded, there-by recording said information, and thereafter applying moisture to said recording medium bearing said recorded, thereby render-ing said recording opaque.
Description
2~
BACKGROUND OF THE INVENTION
This invention relates to inks characterized }~y opaque properties in light. More specifically, this invention relates to inks which are opaque in o~dinary light so as to ~end~ -them particularly suitable as a means for marking various rnaterials.
Ink jet printing is a recenk development in the ~rt o~
applying identifying and decorative indicia to a base. In general terms, a fluid ink is forced, under pressure, through a very small orifice in an orifice block which contains a piezo-electric crystal vibrating at high frequency (50 - lO0,000 vibrations per second) causing the ink passing through the orifice to be broken into minute droplets equal in number to the crystal vibrations. The minute dropleks are passed through a charging area where individual droplets receive an electrical charge in response to a video signal, the amplitude of the charge being dependent on the amplitude of the video signal.
The droplets then pass through an electrical field of fixed intensity, causing a varied deflection of the individual drop--lets dependent on the intensity of the charge associated there-with, after which the deflected drops are allowed to impinge to the base medium which is to receive the decorative or informative printed indicia. Apparatus suitable for carrying out the ink jet printing process is described in detail in U.S. Patents
BACKGROUND OF THE INVENTION
This invention relates to inks characterized }~y opaque properties in light. More specifically, this invention relates to inks which are opaque in o~dinary light so as to ~end~ -them particularly suitable as a means for marking various rnaterials.
Ink jet printing is a recenk development in the ~rt o~
applying identifying and decorative indicia to a base. In general terms, a fluid ink is forced, under pressure, through a very small orifice in an orifice block which contains a piezo-electric crystal vibrating at high frequency (50 - lO0,000 vibrations per second) causing the ink passing through the orifice to be broken into minute droplets equal in number to the crystal vibrations. The minute dropleks are passed through a charging area where individual droplets receive an electrical charge in response to a video signal, the amplitude of the charge being dependent on the amplitude of the video signal.
The droplets then pass through an electrical field of fixed intensity, causing a varied deflection of the individual drop--lets dependent on the intensity of the charge associated there-with, after which the deflected drops are allowed to impinge to the base medium which is to receive the decorative or informative printed indicia. Apparatus suitable for carrying out the ink jet printing process is described in detail in U.S. Patents
3,465,350 and 3,465,351, issued September 2, 1969, and it is in connection with an apparatus and process such as are described in the aforementioned patents that the ink of the present invention is designed to function.
In order to operate satisfactorily in an ink ~et print-ing system, an ink must display a consistent drop breakup lenyth, drop velocity and drop charge under set operating conditions.
~3~'72~
1 It has been determined that on ink jet printer, described in U.S. Patents 3,465,350 and 3,465,351, inks wi-th viscosity o~ 25 cps. will perform satlsfactorily dependiny uQun the type of nozzle used. IIowever, inks wi~h lo~ler viscos~les perform much better~ Resistivity of ink may range as high as 10,000 ohm cm. for satis~actory operations.
DESCRIPTION OF THE INV~NTION
. . . ~
This invention is a process for information recording comprising producing a ~ine jet of liquid, directing a jet of liquid onto a recording medium, modulating the density of the applied jet by an electric field in accordance with the informa-tion to be recorded, thereby recording said information, apply-ing moisture to said recorded information, thereafter rendering said recorded information opaque.
According to another of its aspects, this invention is a process for information recording comprising producing a fine jet of liquid, directing said jet of liquid onto 2 recording medium, ~.odulating the density of said applied jet by an electric field in accordance with the information to be recorded, thereby recording said information, and thereafter lowering the tempera ture ambient to said recorded information to the dew point, thereby rendering said recording opaque.
Inks of this invention include three basic componentsO
The first is a colorant for providing visibility of the printed indicia. The second major component is the solvent which provides fluidity to the ink and carries in solution or suspension the resin and colorant. The third component is a resin or binder which remains on the substrate surface after printing and serves to adhere and bind the dye or pigment in position on the sub-3~ strate surface. In addition to these three componen-ts which are '7~
1 found in nearly all fluid printing inks, various other ingredients may be utilized, including drying, dispersing and wetting ayents, plastici~ers, diluents and the like.
This invention, thus, relates to inks which are opaque.
These inks are organic in nature, also an advarl~aye, in th~
they do not have the abrasive wearing quality of man~ inks ~,ased on a~rasive, inorganic pigments.
Inks of this invention contain resin/polymers in concentration of 1 to 80~ alone or in blends, dissolved in solvents. Solvents include aliphatic alcohol and other solvents can be ketones, aldehydes, ethers, esters, glycols, glycol ethers, hydrocarbon, lactones. Typical aliphatic monovalent alcohols are methyl alcohol, ethyl alcohol, etc.
A necessary resin includes at least one member of the group consisting of cellulose derivatives such as cellulose esters (nitrocellulose, cellulose acetate and the like), and especially cellulose ethers, for e~ample, methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, propionitrile cellulose, ethyl cellulose and benzylcellulose. The correspond-ing derivatives of other polysaccharides can also be used.
Suitable dyeing agents are direct dyes (substantive dyesl, acid dyes, base dyes, and various oil-soluble dyes. The dye type can be chosen depending on the thinning agent combina-tion and the binding agent type.
Pre~erred coloring materials are basic dye bases.
The inks can have a viscosity o~ 1 5 cps to 25 cps at 25C~ The preferred range is 1.8 cps to 7.5 cps.
The resistivity of ink can be as high as 10,000 ohms-cm. The preferred range is 1,500 to 4,0Q0 ohms-cm.
Inks of this invention have adhesion on practically h~'7~2~
1 all substrates.
The resin component of a jet printing ink suitable ~or printing on coated or virgin metal must also mee-t a variet~ o~
requirements. OE primary impor-~ance is ~he ability o~ -~he reC~in to adhere to the coated or virgin me~al ~urface on which the ink is printed and to maintain this strong adhesion under widely varying conditions of humidity and temperature. When the ink is applied to the metal surface, it must "wet" or adhere to a coated or virgin metal surface, even in the presence of some moisture, and must exhibit a high degree of moisture-proofness,not only to maintain adhesion to the metal but also to protect the dye, which may be water sensitive, from the effects of moisture which may make the dye bleed into surrounding areas.
The resin component must also be very readily soluble in the solvent combination to form a stable, low viscosity solution that effective amounts can be dissolved in the solvent without unduly increasing the viscosity of the composition.
Synthetic, semi-synthetic and natural resins, which is to say both polymerization as well as polycondensation and polyaddition products, are suitable. In principle, all resins customary in the printing ink and paint industry, such as are~
for example, described in the lacquer raw material tables of Karstne (4th edition, Hanover, 1967) and in Wagner and Sarx's work on lacquer resins (4th edition, Munich, 1959) are used.
The following, for example, are suitable resins:
colophony and derivatives thereof, hydrogenated colophony, di-or polymerized colophony, as calcium or zinc salt, with colo-phony esterified with mono- or polyvalent alcohols; with resinifiers such as acrylic acid and butane diol or maleic acid and pentaerythritol modified colophony resin; the soluble phenol 1 resins modified with colophony and resins based on acrylic com-pounds, maleinate resins, oil-free alkyd resins, styrolated alkyd resins, vinyl tol.uene modified alkyd resins, alk~d resins with synthe-tic fatty aci.ds, linseed oi~ alky~ resins, ricinene alkyd resins, castor oil alkyd resins, soy oil alkyd resins, coconut oil alkyd resins, tall oil and fish oil alk~d res.ins, acrylated alkyd resins, also oils and oil varnishes. Also suitable are terpene resins, polyvinyl resins such as polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetals, polyvinyl alcohol, polyvinyl ether, copolymers and graft polymers with various vinyl monomers, polyacrylic resins, acrylate resins, polystyrenes, polyisobutylenes, polyesters based on phthalic acid, maleic acid, adipic acid, sebacic acid, etc.; naphthalene formaldehyde resins, furane resins, ketone resins, aldehyde resins, polyurethanes (especially urethane primary-products that cure only at elevated temperature), epoxide resins (especially resin-curer mixtures that cure only at elevated temperature) and precondensates thereof. Suitable too are primary products of unsaturated polyester resins, dialkyl-phthalate-prepolymers, polyolefines such as polyethylene wax or polypropylene wax, indene and cumaronindene resins, carbamide and sulphonamide resins, polyamide and polyester resins r silicone resins, rubber and derivatives thereof, for example, cyclorubber and chlorinated rubber.
A further requirement of resin is that it should have sufficient solvent release so that a desired rate of drying is obtained on a given substrate. In order to be effective in a formulation of a jet printing ink for a given substra-te, the solvent medium must readily dissolve sufficient amounts of the ~ resin component, the dye and anv desirable optional components ~7~
1 such as to achleve the desired level of adhesiveness, con~uc-tivity and visual impact of the ink composition. Further, since some degree o~ evaporation of solven-t will occur in -the ink supply and ink return systems, there~y, increa~in~ the soli~
concentration in ink and solvent should have sufficient power to prevent precipitation in this situation.
Although evaporation of the solvent from the ink supply and return systems ls generally undesirable, it is important that the solvent evaporate at the desired rate from the printed image area in order to leave the printed image smear-proof and moistur~proof in required time after the printing operation is carried out. The solvent must achieve a satis-factory balance in evaporative properties between these opposed objectives.
Depending upon type of substrate on which ink is to be printed, it is advantageous to use a solvent which will penetrate the wax or other coating on substrates to enhance adhesion and rub resistance of the ink.
The jet ink in accordance with this invention, which contains a mixture of an aliphatic monovalent alcohol and at least one other solvent component, is easily deflected and exhibits a high particle stability. The ink in accordance with the invention also contains at least one resin, Typical aliphatic monovalent alcohols are methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, isobutyl alcohol, n-amyl alcohol, amyl alcohol, isoamyl alcohol, hexyl alcohol, heptyl alcohol, octyl alcohol, or a mixture of same. Aliphatic mono-valent alcohols with 1 to 8 carbon atoms are particularly 3~ preferred. The weight ratio of allphatic mono~alent alcohol to 2~
other solvents is preferably 1-99:99-1, especially 30-~0:70-20, and particularly 40-~0:60-20.
Solvents which form the Tnixture for these inks are ketones, aldehydes, ethers, esters, hydrocarbons, yl~col, glycol ethers and lactones.
Suitable solvents are hydrocarbons, such as hexane, heptane, octane, decane, cyclopentane, cyclohexane, benzene, toluol, xylol, and ethylbenzene; hydrocarbon halides, such as carbon tetrachloride, ethylene dichloride, trichloroethylene, 1~ tetrachloroethane, and dichlorobenzene; ether-type solvents, such as butyl ether, ethylene glycol-diethyl ether, ethylene gl~col-monoethyl ether, ethylene glycol-monobutyl ether; ketone-type solvents, such as acetone, methylethyl ketone, methyl propyl ketone, methyl isobutyl ketone, methylamyl ketone, cyclohexanone; ester-type solvents, such as ethyl formate, methyl acetate, propyl acetate, butyl acetate, phenyl acetate, ethylene glycol-monoethyl ether acetate, methylpropionate; other alcohol solvents, such as diacetone alcohol or such.
This invention relates to ink jet printing ink which has excellent adhesion on various substrates. ~ore particularly the invention relates to printing ink which is an ink vehicle which comprises, as the essential component, very high weight percent of resin or blend o~ resin dissolved in a blend of solvents to give viscosity in range of 1.5 cps to 25 cps at 25C
and which is compatible with fatty oils; and various oils, resins, resinous varnishes, solvents, etc.l conventionally used as printing ink materials and further, if necessary, by milling with and dispersing pigments, extenders and/or auxiliary agents in the resulting components.
1 A binding agent and additional additives, such as surface active agents can be added to the ink. Suitable bindin~
agents (vehicle) are dry oils, such as linseed oil, tung oi:L, safflower oil, soya oil, dehydrated castor oili ~emidryiny oils, such as cottonseed oil and beet oil; non~dr~:;ny oils, ~uch ~s castor oil and olive oil, aliphatic acids and esters of same, such as oleic acid, linoleic acid, pelaryonic acid, caprinic acid, ethyltrideanate and methyl laurate; dicarboxylic aci~
ester, such as dimethyl phthalate, diethyl phthalate, dibutyl-phthalate, butylbenzene phthalate, dioctylphthalate, dioctyl-adipate, dioctylsebacate, dibutylsebacate, monomethyladipate and monoethylpimelate; polyvalent alcohols, such as ethylene glycol, polyethylene glycol, diethylene glycol, propylene glycol, glycerine, dipropylene glycol and esters and ethers of the same, such as diethylene glycol monobutyl ether, diporopy-lene glycolemonoethyl ester or such.
I,iquid resins with a molecular weight under 2000 can also be used, for example, polyester resins, epoxy resins and polybutadiene resins. The essential characteristic feature of ~ the ink in accordance with the invention consists in a content of a mixture of an aliphatic monovalent alcohol and at least one other solvent. Compared to commercial nonaqueous ink, such an ink exhibits a considerably improved printing velocity. As a result of the excellent electros-tatic properties deflection is very easy and the ink particles have an increased stability. The ink in accordance with the invention is suited for jet printing devices and electrical field type printers.
The invention is described in the followin~ on the basis of exemplified embodiments.
1 While there are disclosed kelow but a limited number of embodiments of the invention herein presented, it is possible to produce still other embodiments without depar-ting from the inventive concepts herein disclosed. Various other modi~ica-tion~
will be readily apparent to those skilled in the ar-t.
Example 1 Nitrocellulose 10.0 MethanoL 75.0 Methyl ethyl ketone 50.0 ~gC12 2.0 Water 5 0 142.0 By using blushing it becomes practical to get opa~ue prints on dark substrates without the use o~ pigments.
Inks containing up to 40% solids have been prepared.
Example 2 Nitrocellulose 35.0 Ethyl cellulose 5.0 Methyl ethyl ketone 20.0 Methanol 431.0 Ammonium formate 5.O
~96.0 By using blushing it becomes practical to get opaque prints on dark substrates without the use of pigments.
Inks containing up to 40% solids have been prepared.
Example 3 Cellulose acetate butyrate 6.0 Methyl ethyl ketone 24.0 Methanol 58.0 Paratoluene sulphonic acid 2.0 90.0 _ 9_ ~g~ 2~
1 Exam~le 3 cont.inued By using blushing it becomes practical to get opaque prints on dark substrates without the use of pigments.
Inks containing up to 40% solids have been prepared.
Example ~
E-thyl cellulose 8.5 Nitrocellulose 30.0 MgC12 S.0 Methanol 431.5 Auramine base dye 5.0 480.0 Example 5 Cellulose acetate butyrate 34.0 Acryloid* B~66 6.4 Nitrocellulose 18/25 seconds 6.9 Methanol , 300.0 Acetone 330.0 Methyl ethyl ketone 57.0 M~C12 1.5 Distilled water 14.0 Yellow dye 0.2 750.0 Example 6 Ethyl cellulose N71 20.0 Arofene2 24780 50.0 Methyl ethyl ketone 130.0 Methanol 250.0 *Trade Mark 1 sold by Hercules, Inc.
2 A phenolis resin sold by Archer Daniels Midland Company 1 Example 6 continued Methyl Cellosolve* 100.0 Auramine3 base 5.0 Various resin and solvent com~inations carl be u,sed to achieve opaque prints. Solids can range as hiyh as 75~. Color is obtained by using various dyes. Drying rate i5 controlled by a combination of various solvents.
* Trade Mark 3 A class of diphenylmethane dyes, referred to as Color Index Solvent Yellow 34, Color Index No. 41000:1. availabe from BASF-~andotte
In order to operate satisfactorily in an ink ~et print-ing system, an ink must display a consistent drop breakup lenyth, drop velocity and drop charge under set operating conditions.
~3~'72~
1 It has been determined that on ink jet printer, described in U.S. Patents 3,465,350 and 3,465,351, inks wi-th viscosity o~ 25 cps. will perform satlsfactorily dependiny uQun the type of nozzle used. IIowever, inks wi~h lo~ler viscos~les perform much better~ Resistivity of ink may range as high as 10,000 ohm cm. for satis~actory operations.
DESCRIPTION OF THE INV~NTION
. . . ~
This invention is a process for information recording comprising producing a ~ine jet of liquid, directing a jet of liquid onto a recording medium, modulating the density of the applied jet by an electric field in accordance with the informa-tion to be recorded, thereby recording said information, apply-ing moisture to said recorded information, thereafter rendering said recorded information opaque.
According to another of its aspects, this invention is a process for information recording comprising producing a fine jet of liquid, directing said jet of liquid onto 2 recording medium, ~.odulating the density of said applied jet by an electric field in accordance with the information to be recorded, thereby recording said information, and thereafter lowering the tempera ture ambient to said recorded information to the dew point, thereby rendering said recording opaque.
Inks of this invention include three basic componentsO
The first is a colorant for providing visibility of the printed indicia. The second major component is the solvent which provides fluidity to the ink and carries in solution or suspension the resin and colorant. The third component is a resin or binder which remains on the substrate surface after printing and serves to adhere and bind the dye or pigment in position on the sub-3~ strate surface. In addition to these three componen-ts which are '7~
1 found in nearly all fluid printing inks, various other ingredients may be utilized, including drying, dispersing and wetting ayents, plastici~ers, diluents and the like.
This invention, thus, relates to inks which are opaque.
These inks are organic in nature, also an advarl~aye, in th~
they do not have the abrasive wearing quality of man~ inks ~,ased on a~rasive, inorganic pigments.
Inks of this invention contain resin/polymers in concentration of 1 to 80~ alone or in blends, dissolved in solvents. Solvents include aliphatic alcohol and other solvents can be ketones, aldehydes, ethers, esters, glycols, glycol ethers, hydrocarbon, lactones. Typical aliphatic monovalent alcohols are methyl alcohol, ethyl alcohol, etc.
A necessary resin includes at least one member of the group consisting of cellulose derivatives such as cellulose esters (nitrocellulose, cellulose acetate and the like), and especially cellulose ethers, for e~ample, methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, propionitrile cellulose, ethyl cellulose and benzylcellulose. The correspond-ing derivatives of other polysaccharides can also be used.
Suitable dyeing agents are direct dyes (substantive dyesl, acid dyes, base dyes, and various oil-soluble dyes. The dye type can be chosen depending on the thinning agent combina-tion and the binding agent type.
Pre~erred coloring materials are basic dye bases.
The inks can have a viscosity o~ 1 5 cps to 25 cps at 25C~ The preferred range is 1.8 cps to 7.5 cps.
The resistivity of ink can be as high as 10,000 ohms-cm. The preferred range is 1,500 to 4,0Q0 ohms-cm.
Inks of this invention have adhesion on practically h~'7~2~
1 all substrates.
The resin component of a jet printing ink suitable ~or printing on coated or virgin metal must also mee-t a variet~ o~
requirements. OE primary impor-~ance is ~he ability o~ -~he reC~in to adhere to the coated or virgin me~al ~urface on which the ink is printed and to maintain this strong adhesion under widely varying conditions of humidity and temperature. When the ink is applied to the metal surface, it must "wet" or adhere to a coated or virgin metal surface, even in the presence of some moisture, and must exhibit a high degree of moisture-proofness,not only to maintain adhesion to the metal but also to protect the dye, which may be water sensitive, from the effects of moisture which may make the dye bleed into surrounding areas.
The resin component must also be very readily soluble in the solvent combination to form a stable, low viscosity solution that effective amounts can be dissolved in the solvent without unduly increasing the viscosity of the composition.
Synthetic, semi-synthetic and natural resins, which is to say both polymerization as well as polycondensation and polyaddition products, are suitable. In principle, all resins customary in the printing ink and paint industry, such as are~
for example, described in the lacquer raw material tables of Karstne (4th edition, Hanover, 1967) and in Wagner and Sarx's work on lacquer resins (4th edition, Munich, 1959) are used.
The following, for example, are suitable resins:
colophony and derivatives thereof, hydrogenated colophony, di-or polymerized colophony, as calcium or zinc salt, with colo-phony esterified with mono- or polyvalent alcohols; with resinifiers such as acrylic acid and butane diol or maleic acid and pentaerythritol modified colophony resin; the soluble phenol 1 resins modified with colophony and resins based on acrylic com-pounds, maleinate resins, oil-free alkyd resins, styrolated alkyd resins, vinyl tol.uene modified alkyd resins, alk~d resins with synthe-tic fatty aci.ds, linseed oi~ alky~ resins, ricinene alkyd resins, castor oil alkyd resins, soy oil alkyd resins, coconut oil alkyd resins, tall oil and fish oil alk~d res.ins, acrylated alkyd resins, also oils and oil varnishes. Also suitable are terpene resins, polyvinyl resins such as polyvinyl acetate, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetals, polyvinyl alcohol, polyvinyl ether, copolymers and graft polymers with various vinyl monomers, polyacrylic resins, acrylate resins, polystyrenes, polyisobutylenes, polyesters based on phthalic acid, maleic acid, adipic acid, sebacic acid, etc.; naphthalene formaldehyde resins, furane resins, ketone resins, aldehyde resins, polyurethanes (especially urethane primary-products that cure only at elevated temperature), epoxide resins (especially resin-curer mixtures that cure only at elevated temperature) and precondensates thereof. Suitable too are primary products of unsaturated polyester resins, dialkyl-phthalate-prepolymers, polyolefines such as polyethylene wax or polypropylene wax, indene and cumaronindene resins, carbamide and sulphonamide resins, polyamide and polyester resins r silicone resins, rubber and derivatives thereof, for example, cyclorubber and chlorinated rubber.
A further requirement of resin is that it should have sufficient solvent release so that a desired rate of drying is obtained on a given substrate. In order to be effective in a formulation of a jet printing ink for a given substra-te, the solvent medium must readily dissolve sufficient amounts of the ~ resin component, the dye and anv desirable optional components ~7~
1 such as to achleve the desired level of adhesiveness, con~uc-tivity and visual impact of the ink composition. Further, since some degree o~ evaporation of solven-t will occur in -the ink supply and ink return systems, there~y, increa~in~ the soli~
concentration in ink and solvent should have sufficient power to prevent precipitation in this situation.
Although evaporation of the solvent from the ink supply and return systems ls generally undesirable, it is important that the solvent evaporate at the desired rate from the printed image area in order to leave the printed image smear-proof and moistur~proof in required time after the printing operation is carried out. The solvent must achieve a satis-factory balance in evaporative properties between these opposed objectives.
Depending upon type of substrate on which ink is to be printed, it is advantageous to use a solvent which will penetrate the wax or other coating on substrates to enhance adhesion and rub resistance of the ink.
The jet ink in accordance with this invention, which contains a mixture of an aliphatic monovalent alcohol and at least one other solvent component, is easily deflected and exhibits a high particle stability. The ink in accordance with the invention also contains at least one resin, Typical aliphatic monovalent alcohols are methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, sec-butyl alcohol, tert-butyl alcohol, isobutyl alcohol, n-amyl alcohol, amyl alcohol, isoamyl alcohol, hexyl alcohol, heptyl alcohol, octyl alcohol, or a mixture of same. Aliphatic mono-valent alcohols with 1 to 8 carbon atoms are particularly 3~ preferred. The weight ratio of allphatic mono~alent alcohol to 2~
other solvents is preferably 1-99:99-1, especially 30-~0:70-20, and particularly 40-~0:60-20.
Solvents which form the Tnixture for these inks are ketones, aldehydes, ethers, esters, hydrocarbons, yl~col, glycol ethers and lactones.
Suitable solvents are hydrocarbons, such as hexane, heptane, octane, decane, cyclopentane, cyclohexane, benzene, toluol, xylol, and ethylbenzene; hydrocarbon halides, such as carbon tetrachloride, ethylene dichloride, trichloroethylene, 1~ tetrachloroethane, and dichlorobenzene; ether-type solvents, such as butyl ether, ethylene glycol-diethyl ether, ethylene gl~col-monoethyl ether, ethylene glycol-monobutyl ether; ketone-type solvents, such as acetone, methylethyl ketone, methyl propyl ketone, methyl isobutyl ketone, methylamyl ketone, cyclohexanone; ester-type solvents, such as ethyl formate, methyl acetate, propyl acetate, butyl acetate, phenyl acetate, ethylene glycol-monoethyl ether acetate, methylpropionate; other alcohol solvents, such as diacetone alcohol or such.
This invention relates to ink jet printing ink which has excellent adhesion on various substrates. ~ore particularly the invention relates to printing ink which is an ink vehicle which comprises, as the essential component, very high weight percent of resin or blend o~ resin dissolved in a blend of solvents to give viscosity in range of 1.5 cps to 25 cps at 25C
and which is compatible with fatty oils; and various oils, resins, resinous varnishes, solvents, etc.l conventionally used as printing ink materials and further, if necessary, by milling with and dispersing pigments, extenders and/or auxiliary agents in the resulting components.
1 A binding agent and additional additives, such as surface active agents can be added to the ink. Suitable bindin~
agents (vehicle) are dry oils, such as linseed oil, tung oi:L, safflower oil, soya oil, dehydrated castor oili ~emidryiny oils, such as cottonseed oil and beet oil; non~dr~:;ny oils, ~uch ~s castor oil and olive oil, aliphatic acids and esters of same, such as oleic acid, linoleic acid, pelaryonic acid, caprinic acid, ethyltrideanate and methyl laurate; dicarboxylic aci~
ester, such as dimethyl phthalate, diethyl phthalate, dibutyl-phthalate, butylbenzene phthalate, dioctylphthalate, dioctyl-adipate, dioctylsebacate, dibutylsebacate, monomethyladipate and monoethylpimelate; polyvalent alcohols, such as ethylene glycol, polyethylene glycol, diethylene glycol, propylene glycol, glycerine, dipropylene glycol and esters and ethers of the same, such as diethylene glycol monobutyl ether, diporopy-lene glycolemonoethyl ester or such.
I,iquid resins with a molecular weight under 2000 can also be used, for example, polyester resins, epoxy resins and polybutadiene resins. The essential characteristic feature of ~ the ink in accordance with the invention consists in a content of a mixture of an aliphatic monovalent alcohol and at least one other solvent. Compared to commercial nonaqueous ink, such an ink exhibits a considerably improved printing velocity. As a result of the excellent electros-tatic properties deflection is very easy and the ink particles have an increased stability. The ink in accordance with the invention is suited for jet printing devices and electrical field type printers.
The invention is described in the followin~ on the basis of exemplified embodiments.
1 While there are disclosed kelow but a limited number of embodiments of the invention herein presented, it is possible to produce still other embodiments without depar-ting from the inventive concepts herein disclosed. Various other modi~ica-tion~
will be readily apparent to those skilled in the ar-t.
Example 1 Nitrocellulose 10.0 MethanoL 75.0 Methyl ethyl ketone 50.0 ~gC12 2.0 Water 5 0 142.0 By using blushing it becomes practical to get opa~ue prints on dark substrates without the use o~ pigments.
Inks containing up to 40% solids have been prepared.
Example 2 Nitrocellulose 35.0 Ethyl cellulose 5.0 Methyl ethyl ketone 20.0 Methanol 431.0 Ammonium formate 5.O
~96.0 By using blushing it becomes practical to get opaque prints on dark substrates without the use of pigments.
Inks containing up to 40% solids have been prepared.
Example 3 Cellulose acetate butyrate 6.0 Methyl ethyl ketone 24.0 Methanol 58.0 Paratoluene sulphonic acid 2.0 90.0 _ 9_ ~g~ 2~
1 Exam~le 3 cont.inued By using blushing it becomes practical to get opaque prints on dark substrates without the use of pigments.
Inks containing up to 40% solids have been prepared.
Example ~
E-thyl cellulose 8.5 Nitrocellulose 30.0 MgC12 S.0 Methanol 431.5 Auramine base dye 5.0 480.0 Example 5 Cellulose acetate butyrate 34.0 Acryloid* B~66 6.4 Nitrocellulose 18/25 seconds 6.9 Methanol , 300.0 Acetone 330.0 Methyl ethyl ketone 57.0 M~C12 1.5 Distilled water 14.0 Yellow dye 0.2 750.0 Example 6 Ethyl cellulose N71 20.0 Arofene2 24780 50.0 Methyl ethyl ketone 130.0 Methanol 250.0 *Trade Mark 1 sold by Hercules, Inc.
2 A phenolis resin sold by Archer Daniels Midland Company 1 Example 6 continued Methyl Cellosolve* 100.0 Auramine3 base 5.0 Various resin and solvent com~inations carl be u,sed to achieve opaque prints. Solids can range as hiyh as 75~. Color is obtained by using various dyes. Drying rate i5 controlled by a combination of various solvents.
* Trade Mark 3 A class of diphenylmethane dyes, referred to as Color Index Solvent Yellow 34, Color Index No. 41000:1. availabe from BASF-~andotte
Claims (5)
1. A process for information recording by jet ink printing, comprising producing a fine jet of a transparent liquid con-taining at least a resin which is insoluble in water and a non-aqueous solvent for said resin, directing the jet of liquid onto a recording medium, modulating the applied jet by an electric field in accordance with the information to be recorded, there-by recording said information, and causing moisture to be applied to said recorded information,thereby rendering said recorded information opaque.
2. The process of claim 1 wherein the step of causing moisture to be applied to the recorded information comprises controlling the temperature ambient to the recorded information to be at or below the dew point, thereby causing moisture to condense from the atmosphere onto the recorded information.
3. The process of claim 1 wherein the step of causing mois-ture to be applied to the recorded information comprises applying moisture to the recording medium prior to directing the jet of liquid thereon.
4. The process of claim 1 wherein the step of causing moisture to be applied to the recorded information comprising applying moisture to the recording medium after the recorded information is printed thereon.
5. The process of any one of claims 1-3 wherein the trans-parent liquid contains at least one dye.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/941,759 US4207577A (en) | 1978-09-13 | 1978-09-13 | Opaque jet inks |
| US941,759 | 1978-09-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1127228A true CA1127228A (en) | 1982-07-06 |
Family
ID=25477017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA335,534A Expired CA1127228A (en) | 1978-09-13 | 1979-09-12 | Method of recording by jet printing |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4207577A (en) |
| JP (1) | JPS5854675B2 (en) |
| AU (1) | AU518912B2 (en) |
| CA (1) | CA1127228A (en) |
| DE (1) | DE2936920C2 (en) |
| FR (1) | FR2436018A1 (en) |
| GB (1) | GB2030075B (en) |
| IT (1) | IT1120570B (en) |
| SE (1) | SE447555B (en) |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5550073A (en) * | 1978-10-05 | 1980-04-11 | Dainippon Toryo Co Ltd | Jet printing ink |
| US4290072A (en) * | 1980-01-28 | 1981-09-15 | American Can Company | Opaque jet ink printing method and composition |
| US4389503A (en) * | 1980-08-14 | 1983-06-21 | American Can Company | Opaque jet ink compositions |
| US4352901A (en) * | 1980-08-14 | 1982-10-05 | American Can Company | Opaque jet ink compositions |
| GB2134454A (en) * | 1983-02-10 | 1984-08-15 | Graham John Mackereth | Canoes |
| JPS6042097A (en) * | 1983-08-19 | 1985-03-06 | Sakata Shokai Ltd | Aqueous overcoating composition and printing method using the same |
| JPS6070415A (en) * | 1983-09-28 | 1985-04-22 | Sakata Shokai Ltd | Aqueous overcoating composition and printing method using it |
| JPS6083894A (en) * | 1983-10-14 | 1985-05-13 | Sakata Shokai Ltd | Aqueous overcoating composition and printing method using the same |
| US4880465A (en) * | 1987-03-09 | 1989-11-14 | Videojet Systems International, Inc. | Opaque ink composition containing hollow microspheres for use in ink jet printing |
| US5397387A (en) * | 1994-04-07 | 1995-03-14 | Videojet Systems International, Inc. | Food marking jet ink |
| US5710195A (en) * | 1994-08-05 | 1998-01-20 | Subbaraman; Ramesh B. | Non-pigmented opaque jet ink compositions and methods of creating opaque indicia |
| US5594044A (en) * | 1995-03-03 | 1997-01-14 | Videojet Systems International, Inc. | Ink jet ink which is rub resistant to alcohol |
| US5822488A (en) | 1995-10-04 | 1998-10-13 | Sumitomo Electric Industries, Inc. | Single-mode optical fiber with plural core portions |
| US6010564A (en) * | 1997-10-16 | 2000-01-04 | Videojet Systems International, Inc. | Jet ink composition |
| US7030173B2 (en) * | 1998-09-04 | 2006-04-18 | Illinois Tool Works, Inc. | High resolution pigment ink for impulse ink jet printing |
| US6688738B2 (en) | 1998-09-04 | 2004-02-10 | Illinois Tool Works Inc | Method for reducing cavitation in impulse ink jet printing devices |
| US6439709B1 (en) | 1998-09-04 | 2002-08-27 | Trident International, Inc. | Method for reducing cavitation in impulse ink jet printing device |
| DE60131236T2 (en) | 2000-09-29 | 2008-07-17 | Domino Printing Sciences Plc | Ink jet printing compositions and methods |
| EP1193300B1 (en) * | 2000-09-29 | 2007-11-07 | Domino Printing Sciences Plc | Ink jet printing compositions and methods |
| US6812552B2 (en) * | 2002-04-29 | 2004-11-02 | Advanced Interconnect Technologies Limited | Partially patterned lead frames and methods of making and using the same in semiconductor packaging |
| US7207669B2 (en) * | 2003-12-19 | 2007-04-24 | Arizona Chemical Company | Jet printing inks containing polymerized fatty acid-based polyamides |
| KR20110021201A (en) * | 2009-08-25 | 2011-03-04 | 삼성전자주식회사 | Coating solution for ink jet recording apparatus, ink set including the same and the ink composition, and ink jet recording apparatus including the ink set |
| EP2914669B1 (en) * | 2012-11-02 | 2018-12-05 | Domino Printing Sciences PLC | Inkjet ink composition |
| FR2997956B1 (en) | 2012-11-15 | 2015-04-10 | Markem Imaje | INK COMPOSITION FOR CONTINUOUS JET PRINTING IN PARTICULAR ON ORGANIC POLYMER SUBSTRATES. |
| FR3033572B1 (en) | 2015-03-13 | 2019-05-10 | Dover Europe Sarl | INK COMPOSITION FOR CONTINUOUS JET PRINTING IN PARTICULAR ON ORGANIC POLYMER SUBSTRATES. |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1843572A (en) * | 1929-11-13 | 1932-02-02 | Westinghouse Electric & Mfg Co | Method of making chart records |
| US3063050A (en) * | 1958-12-17 | 1962-11-06 | Texas Instruments Inc | Inkless recording method |
| US3179946A (en) * | 1961-09-25 | 1965-04-20 | Atlautic Refining Company | Recording with gas |
| US3373438A (en) * | 1966-01-03 | 1968-03-12 | Pitney Bowes Inc | Jet printer |
| JPS5017840A (en) * | 1973-06-15 | 1975-02-25 | ||
| US3982251A (en) * | 1974-08-23 | 1976-09-21 | Ibm Corporation | Method and apparatus for recording information on a recording medium |
| DE2543092C2 (en) * | 1975-09-26 | 1985-05-15 | Agfa-Gevaert Ag, 5090 Leverkusen | Process for recording information using the ink-jet process |
| JPS52138208A (en) * | 1976-05-12 | 1977-11-18 | Minolta Camera Kk | Ink for ink jetting |
| US4095233A (en) * | 1976-06-30 | 1978-06-13 | Xerox Corporation | Method for forming a charge pattern |
-
1978
- 1978-09-13 US US05/941,759 patent/US4207577A/en not_active Expired - Lifetime
-
1979
- 1979-08-20 AU AU50078/79A patent/AU518912B2/en not_active Ceased
- 1979-08-28 GB GB7929724A patent/GB2030075B/en not_active Expired
- 1979-09-11 IT IT50234/79A patent/IT1120570B/en active
- 1979-09-12 DE DE2936920A patent/DE2936920C2/en not_active Expired
- 1979-09-12 CA CA335,534A patent/CA1127228A/en not_active Expired
- 1979-09-12 JP JP54116237A patent/JPS5854675B2/en not_active Expired
- 1979-09-12 SE SE7907550A patent/SE447555B/en not_active IP Right Cessation
- 1979-09-12 FR FR7922790A patent/FR2436018A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5854675B2 (en) | 1983-12-06 |
| DE2936920C2 (en) | 1986-02-13 |
| DE2936920A1 (en) | 1980-03-27 |
| AU5007879A (en) | 1980-05-01 |
| GB2030075B (en) | 1983-03-09 |
| SE7907550L (en) | 1980-03-14 |
| FR2436018A1 (en) | 1980-04-11 |
| FR2436018B1 (en) | 1984-08-24 |
| IT1120570B (en) | 1986-03-26 |
| JPS5546980A (en) | 1980-04-02 |
| GB2030075A (en) | 1980-04-02 |
| SE447555B (en) | 1986-11-24 |
| US4207577A (en) | 1980-06-10 |
| IT7950234A0 (en) | 1979-09-11 |
| AU518912B2 (en) | 1981-10-29 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |