JPH04294193A - Liquid opaque material and method for correcting mask film using liquid opaque material - Google Patents

Abstract

PURPOSE:To provide liquid opaque material which can be applied uniformly and has excellent drying property, and a method for correcting image forming mask material using the liquid opaque material. CONSTITUTION:A heat melt transfer medium A having at least a light impermeable layer 3 is superposed on an image receiving body 6. After the heat melt transfer medium A is heated from its rear face for printing, the heat melt transfer medium A is separated for making image forming mask material. When pinholes or flaws are generated on this image forming mask material, the parts having defects are coated with liquid opaque material by a brush so as to correct them. The liquid opaque material. has a surface tension of 35dyne/cm or less and viscosity at the room temperature is 10-100 centipoise.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid opaque material and a method for repairing an image forming mask material using the liquid opaque material.

0002

2. Description of the Related Art Photographic prints include, for example, printing an image from a negative film onto photographic paper and printing an illustration image using an image forming mask material. In order to mix them into an image in such a photographic print, it is necessary to prepare an image-forming mask material in advance, and this image-forming mask material is created by computer typesetting, heat-melting transfer media, or the like. Image forming mask materials created from computer phototypesetting or heat-melting transfer media may have transfer defects due to dust or malfunctions such as pinholes or scratches during the creation process. Repairs are being carried out to eliminate malfunctioning parts such as pinholes and scratches by applying .

0003

[Problems to be Solved by the Invention] As described above, the liquid opaque material is used to repair defective parts such as undesirable pinholes and scratches in the mask material for image formation, but the liquid opaque material is peeled off and does not work properly. It was not possible to apply the product to certain positions, or there were areas where it became thicker, making it impossible to apply the product evenly. Additionally, there were other problems, such as the fact that it took a long time to dry the liquid opaque material.

[0004] The present invention was made in view of the above circumstances, and an object of the present invention is to provide a liquid opaque material that can be applied uniformly and has good drying properties, and a method for repairing a mask material for image formation using the liquid opaque material. There is.

[0005]

Means for Solving the Problems In order to solve the above problems, the invention according to claim 1 provides a liquid opaque material containing a colorant, the liquid opaque material having a surface tension of 35
dyne/cm or less, and the viscosity at room temperature is 1
It is characterized by being 0 to 100 centipoise.

[0006] Further, in the method for repairing a mask material for image formation using a liquid opaque material according to the second aspect of the invention, a heat-melting transfer medium having at least a light-opaque layer and an image receptor are superimposed, and the After heating and printing from the back side of the melt transfer medium, the heat melt transfer medium is peeled off to create an image forming mask material, and the liquid opaque material according to claim 1 is applied to the defective part of the image forming mask material. The feature is that it can be corrected.

The liquid opaque material of the present invention contains a coloring agent,
It contains a solvent, a surfactant, and a resin that dissolves in the solvent used.

[0008] As liquid opaque material colorants of the invention, mention may be made of inorganic and organic pigments and dyes. Inorganic pigments include titanium dioxide, carbon black, zinc oxide, Prussian blue, cadmium sulfide, iron oxide, and chromates of lead, zinc, barium, and calcium. Examples of organic pigments include azo, thioindigo, anthraquinone, anthurone, and triphendioxazine pigments, vat dye pigments, phthalocyanine pigments, such as copper phthalocyanine and its derivatives, and quinacridone pigments. Furthermore, examples of the dye include acid dyes, direct dyes, disperse dyes, oil-soluble dyes, and metal-containing oil-soluble dyes. Although such various colorants can be used, carbon black with high hiding power is preferred.

[0009] The liquid opaque material of the present invention includes water and organic solvents as a solvent, and examples of the organic solvent include ketones, halides, toluene, xylene, dioxane, and alcohols. If the solvent is water,
In order to improve drying properties, any organic solvent may be used in combination.

[0010] When the solvent is water, it is preferable to add a known surfactant to lower the surface tension.
/cm or less, and the viscosity at room temperature is 10 to 10
A uniform coating can be achieved at 0 centipoise, and room temperature here is 23°C.

The surfactant of the liquid opaque material of the present invention is a compound that shares a hydrophobic hydrocarbon chain and a hydrophilic atomic group in its molecule, and is a substance that exhibits colloidal properties.
Anionic, cationic, nonionic activators, etc. can be used.

The resin of the liquid opaque material of the present invention includes polyethylene, polyvinyl chloride, polystyrene, polypropylene, polyvinyl alcohol, methacrylic resin,
Petroleum resin, polyamide, polyvinylidene chloride, polycarbonate, polyacetal, fluororesin, etc. can be used.

As shown in FIGS. 1(a) to 1(c), the heat-melting transfer medium A used in the present invention has a light-opaque layer 3 on a support 2 having an anti-fusing layer 1 on the back surface. , a metal thin film layer 4 and a heat-fusible adhesive layer 5 are sequentially provided. This heat-melting transfer medium A is placed on the image receptor 6 with its heat-melting adhesive layer 5 side, and heated printing means 7 is placed from the fusion prevention layer 1 side of the support 2
When the heat-melting transfer medium A is then peeled off, the light-impermeable layer 3 and the metal thin film layer 4 are heated in the heat-applied areas.
and the heat-fusible adhesive layer 5 are transferred onto the image receptor 6 and printed.

Further, as shown in FIGS. 2(a) to 2(c), the heat-melting transfer medium A of the present invention has a peeling layer mainly composed of wax between the support 2 and the light-opaque layer 3. A layer 8 is provided, and the heat-melt adhesive layer 5 side thereof is placed on the image receptor 6, and the heat-melt transfer medium A is peeled off by heating with the heating printing means 7 from the fusion prevention layer 1 side of the support body 2. At this time, the light-opaque layer 3 is smoothly peeled off from the support 2, so that printing performance is further improved.

In the heat-melting transfer medium A of the present invention, the metal thin film layer is not an essential element, but the light-opaque layer is an essential element on the surface side, and a peeling layer and an adhesive layer are optional. You may. The light-impermeable layer may be a metal thin film layer, and the release layer and adhesive layer contain wax, resin, and the like.

In the present invention, it is desirable that the support 2 of the heat-melting transfer medium A has good heat-resistant strength and high dimensional stability, and examples thereof include, for example, plain paper, condenser paper, laminated paper, and Examples include papers such as coated paper; resin films such as polyethylene, polypropylene, and polyimide; composites of paper and resin films; and metal sheets such as aluminum foil. The thickness of the support 2 is usually 30 μm or less, preferably within the range of 2 to 30 μm. The thickness of support 2 is 30μ
If it exceeds m, thermal conductivity may deteriorate and print quality may deteriorate. Note that in this invention, the configuration of the back side of the support 2 is arbitrary, and in this embodiment, for example, a backing layer such as the anti-fusion layer 1 is provided, but if the anti-fusion layer 1 is provided, For example, when heat is applied using a thermal head, it is possible to prevent a thermosetting substance from adhering to the thermal head.

The adhesion prevention layer 1 can be formed of a composition known per se that can prevent the sticking phenomenon, such as (A) silicone resin, (B) polyester resin, polyamide resin, At least one resin selected from the group consisting of cellulose resin, acrylic resin and fluororesin, and if necessary (
C) It is desirable to form it from a resin composition containing a polyisocyanate compound.

The light-opaque layer 3 of the present invention also contains a coloring material,
It contains wax, resin, etc., and examples of the coloring material include the above-mentioned inorganic and organic pigments and dyes.

Further, the metal thin film layer 4 of the present invention is a light-reflecting layer, and has excellent light-shielding properties as it reflects light, does not deteriorate image quality due to light absorption, and can be formed into a thin film. Print quality improves. For example, zinc, aluminum,
Gallium, indium, tin, nickel, silver, gold, copper, silicon, chromium, titanium, platinum, palladium, etc., which can be deposited alone or in mixtures or alloys, can be deposited.

The heat-melting adhesive layer 5 of the present invention contains wax, resin, etc., such as natural waxes such as spermaceti wax, beeswax, lanolin, arunaba wax, candelilla wax, and montan wax, and paraffin wax. , microclean wax, oxidized wax, ester wax, synthetic wax such as low molecular weight polyethylene, higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, fromene acid, and behenic acid, and higher alcohols such as stearyl alcohol and behenyl alcohol. , esters such as fatty acid esters of sorbitan, amides such as stearinamide and oleinamide, polyamide resins, polyester resins, epoxy resins, polyurethane resins, acrylic resins, vinyl chloride resins, cellulose resins, polyamides, etc. Vinyl resins, petroleum resins, ethylene-vinyl acetate copolymer resins, phenolic resins, styrene resins, natural rubber, elastomers such as styrene-butadiene rubber, isoprene rubber, and chloroprene rubber, rosin and its derivatives, terpene resins, Tackifiers such as hydrogenated petroleum resins, fillers, plasticizers, antioxidants, etc. may be used alone or in combination. As in the case of conventional heat-sensitive transfer stickers, the heating means is short-time heating using a thermal head, so a material with a low melting point (usually about 70 to 100° C.) is required. The thickness of the adhesive layer is appropriately selected depending on the surface condition of the object to be transferred, and is usually selected from a range of about 1 to 10 μm.

In this way, the heat-melting transfer medium A having at least the light-opaque layer 3 and the image receptor 6 are superimposed,
After thermal printing is performed from the back side of the heat-melting transfer medium A, the heat-melting transfer medium A is peeled off to create an image forming mask material, and if pinholes or scratches occur in the image forming mask material, it may malfunction. Correct the area by applying liquid opaque material with a brush.

[0022]

[Function] In the invention according to claim 1, the surface tension of the liquid opaque material is 35 dyne/cm or less and the viscosity at room temperature is 10 to 100 centipoise. Repair the defective parts of the image forming mask material by applying it with a brush or the like. At this time, the liquid opaque material can be applied uniformly, and the liquid opaque material applied in this manner dries quickly, resulting in good workability.

[0023]

EXAMPLES Examples of the present invention will be described below, but it goes without saying that the present invention is not limited to these examples.

An image forming mask material was prepared using a thermal printer using a hot melting medium. Failure areas such as transfer defects due to dust and pinholes due to scratches were corrected using a brush using the following liquid opaque material, and the workability was evaluated.

As is clear from Tables 1 and 2, when the surface tension of the liquid opaque material is 35 dyne/cm or less and the viscosity at room temperature is 10 to 100 centipoise, it is possible to uniformly apply the liquid opaque material. Moreover, the applied liquid opaque material dries quickly.

[0026]

As described above, the invention according to claim 1 is characterized in that the surface tension of the liquid opaque material is 35 dyne/cm or less and the viscosity at room temperature is 10 to 100 centipoise, and the invention according to claim 2 The liquid opaque material according to claim 1 is applied to a defective part of an image forming mask material obtained by a heat-melting transfer medium to correct it. By setting the surface tension and viscosity of the liquid opaque material in this way and using this liquid opaque material, it is possible to apply the material uniformly, and the applied liquid opaque material dries quickly, improving workability.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating a heat-melting transfer medium and a printing method using the heat-melting transfer medium.

FIG. 2 is a diagram illustrating a heat-melting transfer medium and a printing method using the heat-melting transfer medium.

[Explanation of symbols]

1　Fusion prevention layer 2 Support 3. Light-opaque layer 4 Metal thin film layer 5 Heat melt adhesive layer A. Heat-melting transfer medium

Claims (2)

[Claims] 1. A liquid opaque material containing a colorant, the liquid opaque material having a surface tension of 35 dyne/
cm or less, and the viscosity at room temperature is 10 to 100
A liquid opaque material characterized by centipoise. 2. A heat-melt transfer medium having at least a light-opaque layer and an image receptor are superimposed, printing is performed by heating from the back side of the heat-melt transfer medium, and then the heat-melt transfer medium is peeled off to form an image. A method for repairing a mask material for image formation using a liquid opaque material, comprising: preparing a mask material for image formation, and applying the liquid opaque material according to claim 1 to a defective portion of the mask material for image formation.