JPS5845989A - Image forming unit and manufacture thereof - Google Patents

Abstract

PURPOSE:To obtain a multicolor printed material having no misregistering by coloring at least one of inks mixed with two types of chemical substances for coloring through irreversibe in reaction when in contact with each other and coloring the superposed part. CONSTITUTION:A pattern (a) which is increased by 0.1mm. laterally as compared with a pattern (b), for example, to be coated later is first printed with ink in which transparent varnish is mixed with nickel sulfate, and is then superposed with ink in which dimethylglyoxime is mixed with yellow ink, thereby printing the pattern (b). The superposed part c occurs irreversible chemical reaction, thereby producing bis(dimethylglyoximatho)nickel (II) to color in red. Accordingly, a multicolor printed material which cannot be expressed in the conventional printing can be simply obtained without using special printing plate and printing machine. This method can be used as a powerful countermeasure for counterfeits of various types of securities.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image forming body characterized in that a portion where a t+ turn and a t+ turn partially overlap are colored by a chemical reaction, and a method for manufacturing the same.

In conventional multicolor printing, no matter how much you try to improve the registration accuracy, there are variations on the order of ±μ due to the accuracy of the printing machine itself, the expansion and contraction of the paper, etc. In other words, it was only possible to obtain one out of several hundred or one out of several dozen multicolor prints that were completely in register.

For example, when obtaining a printed matter as shown in the explanatory diagram of Fig. 1,
According to the conventional method, for example, for a printed matter consisting of two colors, red 1 and yellow 2, a pattern consisting of 1.1.1... is first printed with red ink, and then a pattern consisting of 2.2.2. ...
A glossy turn with the structure of ... is printed with yellow ink (of course, the order of printing can be done in any order), but as mentioned above, there are variations in registration, and the results often end up being out of register. be. Prints like this are made with a combination of Sagige pulls.
That being said, it is extremely difficult. Therefore, in reality, we took into account the misregistration in advance and set the size of the sail (about 1cm) J? Patterning was being done. This is because if the interprinted area is white, it will be very noticeable, whereas a color overlap of about 0.1 square meters will not be very noticeable. Even if this is done, the result will not be as shown in FIG. 1, and one of the patterns will have protruding portions or recessed portions.

Also, when printing such items, the Sammel letterpress printing method is sometimes used. In other words, several different colors of ink are applied to each color separation plate and transferred to an elastic collecting cylinder (ψnmel cylinder), and the printing plate receives the ink and prints many ink onto the paper surface at once. It prints in color, and the printing is done at intervals between each color, so the lines are not cut off and 1. It is possible to change the color of the ink and print with less deviation in appearance and accuracy, making it possible to obtain printed matter as shown in Figure 1.

However, this printing method has the drawbacks that the printing speed is slow, making it unsuitable for large numbers of copies, requiring a long time to attach the plate, and making the printing cost very high.

Furthermore, the Denmel letterpress printing method can only print in different colors for each block.

On the other hand, according to the present invention, no matter how detailed the pattern is, it is possible to print the cape blocks without changing the color or misregistration, and in this point, it is possible to print a new printed matter that could not be obtained conventionally. can now be provided.

According to the present invention, when obtaining a pattern as shown in the explanatory diagram of FIG.
If you select different types of chemicals, for example dimethylglyoxime and nickel sulfate hexahydrate, and use yellow ink containing dimethylglyoxime in pattern b as shown in Figure 2(b), Figure 2(a) ) As shown in Figure 2(b), thicken the base by about 0.1 m in the horizontal direction and print the original lean a with an ink made by mixing nickel sulfate with transparent varnish. If you print over yellow ink with ink mixed with dimethylglyoxime,
The superimposed portion C (see Figure 3) irreversibly undergoes a chemical reaction to form bis(dimethylglyoximato)nickel(II).
), producing a red color. When this overlapping portion is enlarged, it becomes as shown in the explanatory diagram of FIG.

Therefore, the print pattern shown in Figure 1 can be obtained, but even though a pattern thickened by 0.1 vm in the horizontal direction is used, even if there is variation in the horizontal register, the printing in the vertical direction can be Since there are variations, the printed matter does not exactly match the ideal dimensions, but variations in dimensions of about ±0.1 cannot be recognized with the naked eye, so there is no problem.

The color of this superimposed part is a mixture of yellow and red,
This is because the density of the developed color can be controlled by the density of the substance that contributes to the color reaction in the ink, so in this case the color of the negative component can be considerably ignored.

Therefore, according to the present invention, it is possible to easily obtain multi-colored printed matter that could not be produced using conventional printing techniques, without the need for special plate making or printing presses. 2. For example, there were railway tickets that used chelate coloring, light offset printing in imprint printing, etc., but in these cases, the entire surface of the paper was treated in advance with a chemical substance, which is one component of the reaction, and then the other component of the reaction was used. A certain chemical substance is placed in colorless transparent ink, and this ink is used for printing. However, in this case, the purpose is to not give a dirty feeling even if the ink gets on hands, clothes, etc., and the printed portions are all colored. On the other hand, in the present invention, the tsukutaan and tsuktaan are partially overlapped, and only the overlapped portions are colored, thereby producing a multi-colored printed matter with no misregistration, which was not possible in the past. It is clear that they are completely different.

Furthermore, as will be described later, in the present invention, at least the first ink must be a colored ink, and since both of the above-mentioned conventional methods are colorless, this is also clearly different.

In the present invention, an ink is prepared by kneading two types of chemical substances, each of which produces color by an irreversible chemical reaction when they come into contact with each other, and at least one of these two types of ink is colored. This is a printing method in which the lean by one ink and the turn by the other ink partially overlap, and only this overlapped part develops reaction color, but in this case both inks are colorless. In some cases, even if colorless ink and colorless ink are used for overlapping printing, ``even if the overlapping area becomes colored, the result is exactly the same as printing in a single color with the developed color.'' This is the object of the present invention. Isn't there no effect of multicolor prints with no misregistration? I end up. Therefore, at least one of the inks must be colored.

Further, in the present invention, after printing, color development due to an irreversible reaction may be caused or accelerated by heating or irradiation with ultraviolet or infrared light.

In the present invention, the printing plate type is not specified in any way; letterpress, lithographic, stencil, and intaglio can all be used, but offset printing in particular is inexpensive and can print fine lines, even in small lots. Printing costs are advantageous as they are extremely low friction.

The color-forming metal compounds used in the present invention include long-chain fatty acid iron salts (ferric stearate, ferric myristate).
and phenols (tannic acid, gallic acid, ammonium salicylate), organic acid noble metal salts (lead acid, stearic acid,
) N1, C of mother rumitic acid, etc. o%'Pb, Ou,
Fe, HglAg salts) and 7/l/potassium earth metal sulfides (OaB, SrS, Ba5), or organic chelating agents (S-diphenyl-carbazide, diphenylcarbazone), heavy metal oxalates (Ag, Pb, Hg,
Th ) and sulfur compounds (Na-tetrathionate, sodium thiosulfate, thiourea), organic acid noble metal salts (silver oxalate, mercury oxalate), organic polyhydroxy compounds (polyhydroxy alcohol, glycerin, glycol), organic acid noble metal salts (silver behenate, silver stearate), aromatic organic reducing agents (protocatechinic acid, spirointane, hydroquinone), fatty acid ferric salts (ferric stearate) and aromatic I-lyhydroxy compounds (3,4-dihydroxy tetraphenylmethane), organic acid metal salts (silver behenate, acidic silver phthalate) and cyclic organic reducing agents (protocatechic acid, 2-
3-'> hydroxybenzoic acid, 4-methoxy-1-hydroxynaphthalene, hydroquinone, catechol), fatty acid ferric salts (ferric pelargonic acid, ferric laurate) and thiosemicarbazide or thiosemicarbazide derivatives, organic Acid lead salts (lead caproate, lead pelargonic acid,
silver behenate) and thiourea derivatives (ethylene thiourea, N
-dodecylthiourea), higher fatty acid heavy metal salts (ferric stearate, copper stearate), disubstituted zinc dithiocarbamate derivatives (zinc dibutylthiocarbamate), metal salts (nickel acetate) and sulfur-generating compounds (thiooxalic acid). ,
thioacetamide), metal salts (nickel stearate,
Cobalt behenate, gold chloride) and N N'-substituted acid (anoic acid, bismuth salt (?late, oxychloride salicylate, benzoate) and tin compounds as reducing agents (tin sulfide, tin hydroxide), Grignard type These include organometallic compounds and sulfur compounds (thiurams, thioureas, thioamides).

In addition, dye-type products include 3.3-his(p-dimethylaminophenyl)phthalide 3.3-his(p-dimethylaminophenyl)-6 as a triphenylmethane-based leuco compound.
-Simethylaminophthalide (CVL) 3.3- His(
p-dimethylaminophenyl)-6-dimethylaminophenyl 4-hydroxy-4'-dimethylaminotrinoenylmethanelactone 4.4'-bisdihydroxy-3,3'-bisdiaminotriphenylmethanelactone Fluoran-based leuco form As 3-'))lfk amino-6-medoxyfluorane3.
6-His β-methoxyethoxyfluorane 3-di:L-thylamino-6-methyl-7-chlorofluoran 3.7-pis-diethylaminofluorane 3-')
3-phenyl-8-methoxybenzoindolinospiropyran 8'-methoxybenzoindolinospiropyran as a leuco derivative of amino-7-medoxyfluoran spiropyran 4.7.
8'-) 4,4'-bisdimethylamino-3,4-chlorphenylleucoauramine 4,4'-bisdimethylaminobiperazinoid as a leuco form of rimethoxypenzoindolinospirobilan auramine Examples of leuco bodies of the rolephenothiazine type include the following combinations with the p-methoxybenzoylleucomethylene flu group.

Clay acids such as acid clay, kaolin, zeolite, oxalic acid,
Contains organic acids such as maleic acid, citric acid, stearic acid, benzoic acid, gallic acid, and phenolic compounds such as the following.

Catechol, resorcinol, hydroquinone, α-naphthol, β-naphthol, 3,5-xylenol, thymol, pyrogallol, chloroglucine, chloroglucine caldenic acid, 4-terjarifthylphenol, 4-phenylphenol, 4-hydroxydiphenoxide , 4-
Hydroxyacetophenone, methyl-4-hydroxybenzoate, 4-tert-octylcatechol, 4
．． 4'-Secondary-butylidene diphenol, 2.2
'-dihydroxydiphenol, 4.4'-inzolobylidene diphenol (bisphenol A), 2.2'-
Methylene bis(4-methyl-6-tert-butylphenol), 4,4'-cyclohexylidenephenol, 4,4'-inzolobylidene bis(2-chlorophenol), phenol formaldehyde resin, Black type phenolic resin, black type phenolic resin, etc.

As described above, according to the present invention, it is possible to obtain a multicolor printed matter without causing any misregistration without causing an increase in cost.

The present invention applies to stock certificates, bills, checks, cargo vouchers, bills of lading,
This is a powerful measure to prevent counterfeiting of securities such as warehouse bills, bonds, gift certificates, and mortgage securities. In other words, even if a genuine document is color-separated into a color-separating plate and printed over and over again, it is difficult to obtain a printed matter that is as consistent as the printed matter according to the present invention, so that it is immediately identified as a forgery.

Examples will be described below.

Example 1 An ink having the composition shown below was kneaded using three rolls.

Ink A Ink B All parts by weight (same below) Ink A was used to print the 4th turn in FIG. 4 (-), and then ink B was used to overprint the 4th turn in FIG. 4(b). Both were printed using offset printing. When left at room temperature, sodium thiosulfate and cobalt sulfate heptahydrate react in about 1 minute, and the overlapping area turns blue (c), as shown in Figure 4 (C), resulting in an image-forming body with no misregistration (multicolor). A printed matter) was obtained.

Example 2 An ink having the composition shown below was kneaded using three rolls.

Ink A Ink B Print the pattern shown in FIG. 4(a) with ink A, and then print the pattern shown in FIG. 4(b) with ink B. I printed the turns over and over again.

When placed in a room-temperature device, chloride (Tsukeru heptahydrate) and dimethylglyoxime react, and the superimposed area develops a color.
A printed matter as shown in Figure (d) was obtained.

It was a multicolored print with no misregistration.

Example 3 An ink having the composition shown below was kneaded using three rolls.

Ink A 1.5sNs medium (manufactured by Toyo Ink Manufacturing ■) 10 parts,
Ink B The Noreen shown in FIG. 4(a) was screen-printed using ink A, and then the 74 turns shown in FIG. 4(1)) were letterpress printed using ink B and overprinted. Electrically dry this for 15,000 yen.
,．． When heated for 30 minutes, the intersection point became red due to the reaction between RI, A and bisphenol A, and a printed matter as shown in FIG. 4(C) was obtained in which the overlapped area C was red and the rest was pale red.

- When viewed, it was possible to obtain a printed matter of light red and red with no misregistration.

Example 4′, 7, The following inks were kneaded using three rolls.

Ink A Ink B r Crystal Violet Lactone 20 parts Print the yellow pattern shown in Figure 5(a) with Ink A,
Next, four transparent turns of FIG. 5(b) were overprinted using ink B by offset printing. After about 15 minutes, crystal violet lactone, aluminum silicate, and blue C.
The color developed, and a printed matter as shown in FIG. 5(C) was obtained. This was an unusually misaligned print.

Example 5 An ink having the following composition was kneaded for 15 minutes using a Na30 paint conditioner (manufactured by Red Devil Co., Ltd.).

Ink A Ink B″1.

Red A in Figure 6(a) with ink A? Turn a was gravure printed, and then transparent color turn b shown in FIG. 6(1)) was gravure printed thereon. After about (4) seconds, the gallic acid and ferric stearate reacted, and the superimposed area C took on a blackish color, and a printed matter with no misregistration as shown in FIG. 6(C) was obtained.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams of the printed pattern, Figure 3 is a partially enlarged view of the printed pattern in which the pattern in Figure 2 is superimposed, and Figures 4, 5, and 6 show the printed pattern. It is an explanatory diagram. Figure 4 (c) (d) Figure 5 (0) (c) Figure 6 (0) (b) (c)

Claims (2)

[Claims] (1) Among the inks made by kneading each component of two types of chemical substances that cause an irreversible chemical reaction to occur when they come into contact with each other, at least one of the inks is colored, and each ink produces a /'P turn. An image-forming body in which only the partially overlapped parts develop a reaction color. (2) By contacting each other, an irreversible chemical component is kneaded into an ink, at least one of these two inks is colored, and one of the inks is colored.
A method for manufacturing an image forming body, which is characterized by forming a lean pattern, partially superimposing a pattern formed by another ink on the lean pattern, and causing only this superimposed part to react and develop color.