GB2088777A - Ink jet image-forming process - Google Patents

Ink jet image-forming process Download PDF

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Publication number
GB2088777A
GB2088777A GB8132381A GB8132381A GB2088777A GB 2088777 A GB2088777 A GB 2088777A GB 8132381 A GB8132381 A GB 8132381A GB 8132381 A GB8132381 A GB 8132381A GB 2088777 A GB2088777 A GB 2088777A
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GB
United Kingdom
Prior art keywords
process
group
ink jet
substituted
invention
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.)
Granted
Application number
GB8132381A
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GB2088777B (en
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.)
Fujifilm Corp
Fiji Photo Film Co Ltd
Original Assignee
Fujifilm Corp
Fiji Photo Film Co Ltd
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Publication date
Priority to JP55151041A priority Critical patent/JPS6226319B2/ja
Application filed by Fujifilm Corp, Fiji Photo Film Co Ltd filed Critical Fujifilm Corp
Publication of GB2088777A publication Critical patent/GB2088777A/en
Application granted granted Critical
Publication of GB2088777B publication Critical patent/GB2088777B/en
Application status is Expired legal-status Critical

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks
    • C09D11/40Ink-sets specially adapted for multi-colour inkjet printing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52Macromolecular coatings
    • B41M5/5227Macromolecular coatings characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D11/00Inks
    • C09D11/30Inkjet printing inks
    • C09D11/38Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes

Abstract

A process for forming images comprising ink jet printing on a recording sheet containing a dye fade-preventing agent using at least one aqueous ink comprising a water-soluble acid or direct dye. Suitable agents are phenol derivatives wherein at least one of the orthopositions with respect to the hydroxy group is substituted by a tertiary alkyl group; bisphenol derivatives; phenol derivatives of phosphoric acid esters; and phenol compounds wherein the p-position with respect to the hydroxy group is substituted by an oxygen atom forming part of a 5- or 6-membered ring which is condensed together with the phenol nucleus. The agent is coated with a pigment or onto a pigment-containing layer on the sheet, preferably together with an hydroquinone antioxidant and/or ultraviolet absorbent. Multi-colour images using yellow, magenta, cyan and black inks are provided with excellent fading resistance.

Description

SPECIFICATION Ink jet recording image-forming process This invention relates to an ink jet printing process. More particularly, the invention relates to an ink jet printing process suitable for the formation of multicolor recording images. More particularly, the invention relates to an ink jet printing process which is excellent in color reproducibility and suitable for forming multicolor recording images having excellent light resistance.

Since ink jet printing process makes less noise, can employ high speed recording, and can use plain paper for recording, this printing process has been employed for terminal printers, etc., and recently has been increasingly ued for various purposes. Furthermore, a system of forming multicolor recorded images using multiple ink nozzles has been widely used for color plotters and color facsimiles. However, in the case of practicing multicolor recording, various problems occur which have not occurred in the case of monochromatic recording.

That is, unlike monochromatic recording, multicolor recording is usually used for forming reproduced images, such as photographs, pictures, posters, illustrations, color images, etc., and involves the followng problems: (1) Reproduced images faithfully reproducing forms, colors and sharpness of photographs, pictures, posters, illustrations, color images, etc., must be formed.

(2) Reproduced image portions faithfully reproducing photographs, pictures, posters, illustrations, color images, etc., and non-images portions may become stained when they are exposed to ultraviolet rays for a long period of time.

(3) Reproduction images of photographs, pictures, posters, illustrations, color images, etc., must be stably formed at a high speed.

(4) During ink jet printing, ink flows may be scattered so as to stain the non-imaged portions.

(5) When the printed portions are rubbed after printing, the imaged portions may be disturbed and the non-imaged portions stained.

For solving these problems, various attempts have been proposed. For example Japanese Patent Application (OPI) No. 89811/79 (the term "OPI" as used herein refers to a "published unexamined Japanese patent application") discloses an ink jet printing process using yellow, magenta, and cyan inks, the reflection density curves of which shown on a medium are restricted for performing color reproduction necessary for forming reproduction images faithfully reproducing original images. Also, Japanese Patent Application (OPI) No. 89534/74 discloses a printing process using yellow, magenta and cyan inks for forming stable reproduction images faithful to the original images at a high speed.

Japanese Patent Application (OPI) No. 530121/77 discloses ink jet recording papers for obtaining images having good density, resolving power and color reproducibility. Particularly, a coating material is coated on a slightly sized base paper and the coating material permeates to the inside of the paper to reduce spreading of color components in the inks in the planar directions of the paper, reduces the permeation of color components in the inks to the inside of the paper, and thus keeps the color components at the surface of the paper.Furthermore, for similar purposes, Japanese Patent Application (OPI) No. 49113/78 discloses ink jet recording papers prepared by impregnating papers containing a fine powder of urea-foramalin resin with a water-soluble polymer, and Japanese Patent Application (OPI) No. 74340/77 discloses ink jet recording papers having definite gas permeability and ink absorbing time. Also, for preventing reproduced images obtained by ink jet printing for a long period of time without fading, Japanese Patent Application (OPI) Nos. 68303/79 and 85804/79 disclose inks containing water-soluble ultraviolet absorbents.

However, the multicolor recording images formed by using these known techniques cannot sufficiently meet all desired characteristics of color reproduction and light resistance, and thus these techniques are not completely satisfactory as ink jet printing processes.

An object of this invention is to provide an ink jet printing process suitable for forming multicolor recording images having high color density, excellent resolution and good color reproducibility.

Other object of this invention is to provide an ink jet printing process suitable for forming multicolor recording images which can be preserved for a long period of time and are excellent in light resistance.

Still other object of this invention is to provide an ink jet printing process using yellow, magenta, cyan, and black inks having excellent light resistance and color reproducibility, and a recording sheet having a coating layer containing a dye image fading preventing agent.

As a result of extensive investigations, it has been discovered that in an image forming process by ink jet printing, images having very high light resistance can be formed by ink jet printing onto a recording sheet containing a dye image fading preventing agent at least one aqueous ink comprising a water-soluble acid dye or water-soluble direct dyes.

Multicolor recorded images having high color density, excellent resolution, excellent color reproducibility, and excellent light fading resistance can be formed by ink jet printing onto a recording sheet having a pigment-coated layer containing a dye image facing preventing agent, using aqueous ink(s) as described above.

According to this invention, inks suitable for forming multicolor recording images include yellow, magenta, cyan and black inks, desirably having high light resistance, desirable spectral absorption region and minimal side absorption; as dyes used for such inks, water-soluble acid dyes or water-soluble direct dyes are useful.

Preferred dyes are those shown by following general formulae: Preferred yellow dyes used in this invention are shown by formula (I): <img class="EMIRef" id="026917882-00020001" />

wherein R1 represents a phenyl group, a substituted phenyl group (substituent: e.g. Cl, alkyl group, alkoxy group, sulfo group or carboxyl group), an alkyl group, or a substituted alkyl group (substituent: e.g. sulfo group or cyanoethyl group); R2 represents an alkyl group, a phenyl group, a substituted phenyl group (substituent: e.g. C1, alkyl group or alkoxy group), a cyano group, a hydroxy group, an alkoxy group, an amino group, an acylamino group, an anilino group, a ureido group, an alkoxycarbonyl group, or a carbamoyl group; X represents a halogen atom, an alkyl group, or an alkoxy group; n represents 1, 2, 3, 4 or 5; and m represents 1, 2 or 3.When m is 1, R, is preferably a sulfosubstituted alkyl group or phenyl group.

Practical examples of the preferred water-soluble yellow dyes are illustrated below.

Examples of Yellow Dye: <img class="EMIRef" id="026917882-00020002" />

<img class="EMIRef" id="026917882-00030001" />

Preferred magenta dyes used in this invention are shown by formulae (II), (III) and (IV).

Formula (II) can be represented as follows: <img class="EMIRef" id="026917882-00030002" />

wherein R1 represents a cyano group, an alkylsulfonyl group, an arylsulfonyl group, a trifluoromethyl group, or a trichloromethyl group; R2 represents an amino group, an acylamino group, a substituyed ureido group, an alkyl-amino group, an alkoxy group, a substituted alkoxy group, or an alkyl group; R3 represents a hydrogen atom or an alkyl group; and n represents 1 or 2.

Practical examples of the water-soluble magenta dyes of formula (II) contained in the inks of this invention are illustrated below.

Examples of Magenta Dye: <img class="EMIRef" id="026917882-00040001" />

The foregoing magenta dyes used in this invention can be prepared as described in the specifications of Ja