DE1919397A1 - Process for mimeographic copying and copying material therefor - Google Patents

Description

TELEGRAMS, KARPATENT NUSSBAUMSTRASSE 10

April 16, 1969

W. U 224/69 13 / Never

Fuji Shashin Film Kabushiki Kaisha Kanagawa (Japan)

Mimeographic copying methods and copy material therefor

The invention relates to a method for mimeographic copying and to a copy material therefor and in particular to a method of mimeographic copying and a copy material therefor, the fact comes to the application that a coloring reaction takes place in that an electron-emitting brings adsorbable colorless color reaction material with an electron-accepting adsorbent material (bridging).

909844/1307

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As simple copying methods, there have generally been an aniline transfer method and a mimeographic one. Procedure known. '

The aniline copying process is called the chromographic or hectographic process, its basic principle is given below.

A surface of the copy plate made by mixing glycerin and sugar with gelatin or agar-agar Hardening the mixture is brought into contact with an original paper - the one with a Printing ink containing dye, e.g. methyl violet or eosin or ink is written on. The paper is then stripped from the copier plate, the dye ii the Gelatin or adsorbed in agar-agar by means of the action of glycerin. Then the dye becomes sequential transferred to white paper materials by bringing them into intimate contact with them.

A copying process using alcoholic solution (spirit printing process) is an improvement this method. However, in the alcohol solution copying method, the concentration of the copied images becomes. gradually decreased when the. Dye is sequentially transferred to white paper materials and accordingly it is not possible to make a number of copied papers. In addition, the dye adheres to the body on, which is sometimes disadvantageous for the consumer.

909844 / 130-7

ORfGlNAL INSPECTED

The mimeographic process is a type of (Silk) screen printing process known as mimeography because it is easy to use and low cost has been widely used. The basic principle of this way of working is as follows: First, a stencil sheet is made from a porous fabric that is covered with a coating of the is impervious to printing ink. By writing on with a machine or drawing on it with a With a sharp instrument, the cover is pushed aside and the porous tissue is exposed, using a template Openings is formed. The stencil is then placed on a rotating cylinder, each sheet of white Paper that is passed under this is pressed against the stencil by pressure rollers ^ A printing ink becomes pressed through the openings of the stencil onto the white paper, the original typewritten or the drawn communication or representation is reproduced. This mimeographic ink is made by dissolving of a pigment in an oil. Accordingly, the printing ink is not only due to the contamination of bodies and clothing, which is uncomfortable for the user, disadvantageous, but also troublesome handling is required, to keep the stencil (master) used once, as it sticks to the same printing ink.

Moreover, all of these ways of working require TOKhäptni

moderate

complicated facilities, in spite of them being simple copying processes are designated. There has long been a technical interest in these tile parts in a simple one To eliminate copying or duplication technology.

909844/1307

forming substance had to be encapsulated in order for him to work to be kept for a long period of time, and after application of the The layer of microcapsules had to be dried with the microcapsules containing the leuco dye as a coating on a paper will.

According to the invention, a leuco dye comprising a paste or a solution of the leuco dye is sequentially applied by a stencil to clay-coated papers. For example, a rotating cylinder is inserted into the Dipped leuco dye and then pressed the stencil into intimate contact with the clay-coated paper with the rotary cylinder, causing the leuco dye through the openings of the Stencil is pressed onto the clay-coated paper to form colored characters on the clay-coated paper. The above-listed steps are performed during the sequential feeding of clay-coated papers to the Obtaining a variety of copied materials repeatedly,

Moreover, the leuco color can be in a sheet-like state

. will

(sheet state) supplied /. Accordingly, a sheet or web-shaped parb material comprises a carrier base _c with a coating of the leuco color thereon or a carrier base which is incorporated in the leuco color. immersed, or a carrier pad with another carrier pad immersed in the leuco color.

The leuco dye sheet or sheet is made by having the leuco dye as a coating on the Application of the carrier substrate, e.g. paper, resin or metal, or by inserting the carrier substrate "into the leuco color"

909844/1307

The object of the invention is therefore to create a mimeographic copying process that is free from the disadvantages described above »Another purpose of Invention is to provide a copy sheet or print sheet be used in a simple manner for mimeographic copying that does not contaminate clothes and bodies can and has excellent printing or copying ability.

The mimeographic copying method according to the invention is characterized in that a template with openings is brought into intimate contact with a paper which carries a coating of an electron-receptive adsorbent material (hereinafter referred to as clay-coated paper referred to) and on the opposite surface of the stencil applies a printing ink that is an electron-donating adsorbable colorless material that is a Can give color reaction (hereinafter referred to as leuco dye), applies, this printing ink by .die Openings of the stencil pressed onto the paper and color images to be formed according to the openings on the clay-coated paper »

^The mimeographic printing or copying process according to the invention is characterized in that the colorless leuco dye is used in combination with the paper coated with clay ";

T) he leuco dye was well known in the dyestuff industry and a combination of leuco dye and clay coated paper was also used as a pressure sensitive copier paper, the dye being used in a film

909844/130

ORIGINAL INSPECTED

dips, the leuco dye comprising the leuco dye physically dispersed in a binder or dissolved in a solvent. To protect the adhesion of the printing ink, a paper that can be stripped off, for example cellophane, vinylidene chloride-vinyl chloride copolymer or paraffin-coated paper, can be applied to the surface of the ink layer. It is particularly preferred that the sticking or sticking preventing paper be exposed to heat, light, pressure ^; or a liquid can be destroyed. In addition, the sheet or sheet of paint material (ink sheet) can be bent so that the surfaces of the paint layer can be in close contact with each other, as shown in FIG contains a leuco color layer 2 as a coating thereon, so that a part la of the triangle 1 and part 2a of the color layer 2 are in contact with the remainder Ib of the carrier 1 and the remainder 2b of the color layer 2, respectively. In this case, the curved support must be sealed at the layer 6, which is excluded from the paint layer. In the case of using this sheet or web-like material, the carrier 1 is pulled from the direction A to the direction B. The color is worn more heavily on the support at 2a than on the support at 2b. Thus, in the case of pressing, a rotating roller or roller is moved from A to B, and the supply of ink through a shadow to a paper coated with clay becomes uniform.

In addition, non-sticky, finely divided particles with sizes smaller than 50 microns, preferably smaller than 10 microns, to be contained in the leuco color. examples for such fine particles are carbohydrate powder,

909844/1307 original inspected

e.g. starch, dextrin or sugar, and inorganic materials, e.g. glass powder or metal powder. This powder can in an amount of 0.1 to 5 times the amount by weight of the leuco dye of a 1 to 20% solution of the leuco dye can be added after adjusting the viscosity and adhesiveness. By adding the finely divided particles to the leuco color, the leuco color of a stencil becomes uniform from the beginning to the end of printing or copying and no bubbles are formed between the ink sheet and the stencil, making them in close contact are with each other, and therefore the printing or copying properties are improved. Besides, the handling is too the leuco color facilitated, since the leuco color containing the above-mentioned finely divided Particle is semi-dry.

In addition, to protect against the formation of fine air bubbles between the ink sheet and the stencil when u. Copying or printing a fat and oil, a wax or ^l; Mineral oil may be contained in the leuco color. Examples of fatty oils are a vegetable fat and oil, for example a cloudy one. Wax (haze wax) or Mmöl, an animal fat and oil, e.g. semi-drying horse fat or semi-drying sebum oil, and a hydrogenated oil. A solid vegetable wax such as carnauba wax, candellilla wax, palm wax, and an animal solid wax such as shellac wax, whale oil or wool wax can be used as the wax ΐ * . . As the mineral Can solid paraffin, chlorinated U ^"f -. ^ Paraffin and petroleum wax be used.

INSPECTED

909844/1307

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After dissolving the Iauko dye in one medium, these substances can be mixed with the solution while heating, after which it is cooled to room temperature » The amount of fat or oil added, wax or mineral oil is 0.1 to 5 times the amount by weight, based on

the leuco dye. -,

In addition, a polymeric adhesive material which is dissolved with heating and deposited as a fine powder at room temperature may be contained in the paint containing the above-mentioned non-tacky fine particles. This color is obtained by dissolving the leuco dye in a solvent to form a 1- bip SO £ solution of Leukofarbstoffε, the polymeric Kl 'b _T substance dispersed in the solution and then the non-tacky finely divided powders with the resultant solution' - _: mixes, whereby a product (net - net) consisting of "two types of finely divided powders, in which the leuco color is enclosed, is formed"

Cellulose derivatives, for example ethyl cellulose, chlorinated rubber (gum) and polyethylene, preferably with a molecular weight of 1,000 to 10,000, can be used as polymeric adhesive substances. The amount of the finely divided adhesive powder added is in the range from 1/100 to 10% by weight, based on the leuco dye, and preferably in the range from 0.05 to 5% by weight . Since the leuco dye is surrounded by two types of finely divided powders Leukofarbe flows from the ink sheet at a temperature below 50 ⁰ C is not out, and therefore the handling of the ink sheet is easy.

9 0 9 8 U / 1 3 0 7

ORtGfNAL INSPECTED

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To increase the viscosity of the leuco dye, can as a viscosity-imparting agent polybutene, a styrene polymer, Polyvinylpyrrolidone or an olefinic polymer of the leuco color can be added. This viscosity-imparting Agents preferably have a molecular weight of 200 to 5000.

Examples of colorless leuco dyes which are used according to the invention are 4,4'-tetramethyldiaminodiphenyl methane, Michler's ketone (Michler's Hydrol), MichTer's hydro lemethyl ether, 4,4'-tetramethyldiaminodiphenylmethylbenzoate, tetramethylbenzidine, crystal violet carbinol base , Crystal violet carbinol methyl ether, crystal violet lactone, malachite green carbinol base, malachite green lactone, malachite green carbinol methyl ether, malachite green carbinol ethyl ether, primocyanine carbinol base, primocyanine carbol methyl ether, primocyanine carbinol methyl ether, spirit skybase blue methyl ether, spirit-skybase-blue-alcohol and Rhodamine B- Lacton, Rhodamine B 'Jf_ Lactam, Leukomethylene Blue Q the like .. _ ■. ~

The solvents according to the invention for use reach depend on the type of leuco dyes. Appropriately, those are chosen that have no adverse effect exercise on the template as indicated below, Examples are benzene, toluene, xylene, kerosene dibutyl phthalate, tricresyl phosphate, diphenyl ether, chlorinated diphenyl and a mix of them. The binders include as color carriers e.g. linseed oil, trichlorodiphenyl, natural resin, petroleum resin and ketone resin. Of course, these materials have no adverse effect on the leuco dyes, the stencil (master) and the construction paper.

909844/1307

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The clay-coated paper according to the invention is made by applying a clay containing a suitable binder as a coating on a paper or made by adding clay to a paper pulp during papermaking. As clay materials can acid clay, active clay, kaolin, atapulgite and bentonite come into use. This clay-coated paper can be such as it is used as a common printing ' delicate copy paper is used.

As a support for the ink sheet according to the invention Can be commonly used paper, Japan paper, filter paper, baryta paper, aluminum-coated Paper, cover sheet, cellophane, layered cellophane, polyethylene, polyethylene terephthalate, acetyl cellulose, Felt, urethane foam sheet, styrene foam sheet, Vinyl chlorofoam sheet and nonwoven fabrics for Application.

To perform printing or copying under Using the sheet according to the invention, a template, e.g. one written on with a typewriter Template or one cut with a writing implement Stencil between the color sheet and 'clay-coated Paper, and pressure is applied to the surface of the ink sheet or clay sheet. The yielding one or the color of the ink sheet is removed through the stencil openings transferred to the construction paper and the coloring reaction is brought about. -

It can therefore do a number of printing passes or reproductions may be made by repeating this process. In addition, the color sheet can.

909844/1307

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Air invention can be stored in-dea one brings the color sheet into intimate contact with the stencil or template, and it can be used again, provided the color remains in the ink sheet even if copying or printing is interrupted «Moreover body and clothing will not be soiled during storage because the printing ink is colorless.

Furthermore, a layer can be formed on the color layer, which under the action of heat, light, tintr liquid or a combination thereof is destructible, c.B. a wax layer and a resin layer.

Hit the printing or ink sheet according to the invention can be aine-tinted color, «* B · red, blue, purple and black by appropriate selection of the leuco dyes «NtwicOdit we> dan or it can be done tine Fai ^ bkopiöruttjg by combining these dyes and SfittaÄ page arranges »^

The invention is explained in more detail below with reference to the drawing.

1 to 6 show sectional views of copier or printing materials according to the invention.

Fig. 1 shows a sectional view of the ink sheet I, wherein a layer 2 containing a leuco dye, is applied to a carrier 1.

2 shows a sectional view of a clay-coated paper 2, with a clay 4 on a carrier 3 is upset.

909844/1307

INSPECTED

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Fig. 3 is a view showing copying or printing using the copying materials shown in FIG of the invention, a stencil 5 between the ink sheet I and the clay-coated paper II is inserted, which are arranged so that the layer and the layer 4 are opposite to each other; thereby will Pressure applied in the direction indicated by arrows.

Fig. 4 shows another example of copying materials according to the invention, wherein an ink sheet I contains the leuco dyes A and B, which have a different Color development results when the ink sheet I is brought into contact with the clay layer 4. When using such copying materials can veraulicht according to the same procedure as in Fig. 3, Color copies can be obtained. - -

5 and 6 show further examples of copying materials according to the invention, wherein an ink sheet I ^{1 contains} a leuco dye B, which is developed in a certain color, and this ink sheet I ^{1 is placed} on an ink sheet I, which contains a leuco dye A. which gives a different color development. When such copying materials are used, color copying can be obtained by the same operation as shown in FIG.

Since the copy materials according to the invention before are colorless after copying or printing, they do not result in contamination of body and clothing and are therefore not uncomfortable for the user. In addition, the printing or copying resistance is compared to the

09844/1307

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Those of the alcohol copying process - (spirit printing process) and no solvent is required when copying. In addition, the.-_ 3r used copier or printing machine (duplicating machine) compared to the copier machines known from the prior art .simplified, as the machine is only equipped with a template or template cylinder and a pressure roller or roller is.

The invention is illustrated below by way of examples explains in more detail, in which all parts are based on weight.

• Example 1

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An ink sheet was prepared by applying, on a paper, a printing ink prepared by dissolving 5 parts of crystal violet lactone in 95 parts of trichlorodiphenyl and dispersing it in 100 parts of linseed oil. On the other hand, a clay-coated Papio ^{1 was composed} by applying an acidic clay made with a binder on another paper. ^; .

A stencil plate was scratched with a steel spring to produce a stencil with openings, Then the paint sheet, stencil and clay-coated paper were properly placed on top of each other. That I The resulting layered material was applied to the back of the paint layer of the paint sheet by a roller pressed. The paint was transferred to the clay-coated paper through the stencil openings of the stencil and accordingly, the clay coated paper was developed by the color forming reaction. The way of working

909844/1307

191939?

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of pressing by the roller was under consecutive Feeding of clay-coated papers until the ink on the ink sheet is used up repeatedly. About 300 clear blue copies were obtained "

The same result was obtained using an ink sheet obtained by applying the paint described above on coated paper, polyethylene terephthalate film, or Aluminum foil has been made instead of the paper was. Contamination of clothing or bodies by the paint was found during the printing or copying operation not observed

Example 2

On a sheet of paint that was produced by applying a paint to a paper surface, wherein the color by dissolving 4 parts of crystal violet lactone and 96 parts of trichlorodiphenyl and dispersing The resulting solution in 80 parts of linseed oil was made into a coloring sheet at a desired one Area, as shown in Fig. 5., Applied by applying a color to another paper which was prepared by dissolving 5 parts of Rhodamine B - lactone in 95 parts of trichlorodiphenyl and dispersing the resulting solution in 50 parts Flaxseed oil had been made. The combination of a stencil and a stenciled color sheets Clay-coated papers are stacked in order. The layered material was at the back

909844/1307

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the coloring layer of the ink sheet is pressed by a roll t give a blue copy with a partial development in red color was obtained. When this pressing operation was repeated, about 35o copies could be obtained.

Example 3

"~ A paint layer of the paint sheet of Example 1 was coated with a vinylidene chloride resin film (trade name "Saran" manufactured by Asahi Dow Co., Ltd.) As a strippable Sheet covered. The paint did not adhere to other objects when the peelable sheet was stripped. A number of copies could be made according to " the same procedure as in Example 1 by stripping off said strippable sheet Use to be made. It was possible to pause copying or printing while it was running. In this case, the paint sheet has been covered with said strippable sheet. Copying could carried out again when the strippable sheet is stripped off will.

Example 4

A layer of a mixture of glass fibers and paper pulps was applied to a layer of paint on the paint sheet of Example 1 applied. An original was placed on this color sheet. When heated, this became Mixture on the layer corresponding to the letter parts of the original, since the letter parts on the Original had a high heat absorption capacity.

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Then the color sheet, stencil and clay-coated paper were placed on top of one another. When pressing with a Rolle, the same result as in Example 1 was obtained. This layer acted as a protective layer for one soft printing ink. It was; no contamination of the body observed during the printing or copying process and in addition, the * ink did not adhere to other objects before printing or copying.

Example 5 .

5 parts of crystal violet lactone were dissolved in 95 parts of diphenyl chloride with heating and, after cooling, the Solution, 100 parts of potato starch with a particle size of less than 10 microns were mixed with the solution / to make a paste-like leuco dye.

The leuco dye thus obtained was coated on a Cellophane-coated paper applied with a thickness of ο.55 mm *

Example ... 6;

Color sheets were made using the following conditions;

9098

Leuco dye

Crystal violet

"\ lacton
3.3 parts

solvent

chlorinated diphenyl 43.7 parts solid substance coating thickness

solid paraffin 33 parts (F. 6o ^ 62 ⁰ C)

0.3 well

Carrier pad.

Polyethylene terephthalate

Leucomethylene blue

4, ο parts

chlorinated diphenyl 76 parts chlorinated solid paraffin 2o parts (F. 65

o, 3 mm

Polyethylene terephthalate

Leucomaphthofluoran

5, o parts

chlorinated diphenyl, 60 g toluene 5.5 parts

solid paraffin ο, 3 mm
(F. 4o - 42 ⁰ C) ₂₈

Beeswax
2, o parts
(F. 62 .- 66 ⁰ C)

Polyethylene terephthalate

Halachite green lactone 1, o parts

toluene

2nd Floor

Butyl acetate 44 parts microcrystalline wax (F. 82 - 84 ⁰ C) triphenyl chloride (F. 9o ^c C)

o, 3 mm

Polyethylene terephthalate

Rhodamine B-Lactam 3, o parts

chlorinated diphenylQ _0f

liquid paraffin 3o parts

Montan wax

14 parts

(F. 76 - 78 ⁰ C)

o, 3 min

Polyethylene terephthalate

CD CO CD

Leuco dye solvent solid substance coating thickness support base

Crystal violet

lactone

1o parts

chlorinated diphenyl 80 parts

Japan - tallow 1o parts (F-52-53 ° C)

o, 2 mm

sour
Rhodamines
B-Sulton
5 parts

chlorinated diphenyl 70, 5 parts kerosene 1.5 parts cold wax anhydride 0.15 mm
(cool wax anhydride;
2, o parts
solid paraffin
(F. 47 - 52 ⁰ C)
2, o parts

Crystal violet chlorinated lactone diphenyl

3, o parts 68 parts of leucomethylene blue liquid 4, o parts of paraffin

8 parts whale fat (whale) ο, 3 mm
16, o parts
(F. 46 - 5o ° C)

N-substituted chlorinated xanthene dye - diphenyl lactone 87 parts 6, o parts "

Carnauba wax
7, o parts
(F. 78 - 8O ⁰ C)

o, 2 mm

Polyethylene enterephthalate

Polyethylene terephthalate

Polyethylene terephthalate

Polyethylene terephthalate

Leuco dye solvent solid substance coating support base

1o like no. 1 like no. · T like no. 1 o, 3 m aluminum-coated paper

11 like no.

12 like no.

like no.

like No. 1

like no. T

like No. 1

ι I

I I

0.3 mm

o, 35 mm

Paper in overlay on a non-woven
Ctoff

Aluminum foil

CD Ca) CD

Example 7

4 parts of crystal violet lactone and 0.5 parts of polyethylene with a molecular weight of 2ooo were in ' 96 parts of chlorinated diphenyl dissolved at Joo ° C. To Cooling the solution to room temperature was a printing ink in which a finely divided powder of polyethylene was suspended. 2o parts of liquid paraffin and 100 parts of potato starch were mixed with the Ink mixed to form a uniform paste. The paste was coated onto a polyethylene terephthalate film with a thickness of 30 microns and a size of 3o χ 25 cm in a thickness of 3oo Microns and a size of 25 x 20 cm. A thin film of vinylidene chloride was applied to the paint layer applied as protective paper. Purple colored copied materials were produced using the above Received Fatobblattes.

A stencil and clay-coated paper were placed under a mesh screen in the order listed and the ink sheet was placed on the mesh screen so as to be in close contact with the ink layer thereof to get. The back of the color sheet was made with pressed into a roll, giving 300 sheets of purple-colored copying materials or duplicates became.

Example 8

15 parts of N-methyl-N-ethyl-rhodamine B-lactone and 3 parts of polyethylene with a molecular weight of 5ooo were in a mixture of 2oo parts of castor

9098U / 1307

Oil and 4o parts of paraffin with a melting point of 4o to 5ο ⁰ C dissolved with heating and then cooled. To the solution, 100 parts of dextrin and 1 part of phenyl silicone were added to form a paste-like printing ink, which was then coated onto cellophane-coated paper to a thickness of 200 microns. The coated ink was exposed to infrared rays for 3 to 1o. irradiated to melt the surface of the coated paint, followed by cooling. Copying or printing was carried out using the same procedures as in Example 7, whereby 200 sheets of purple colored copies or duplicates were obtained.

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Claims (1)

Claims 1) Method of mimeographic copying, thereby characterized by continuously making a stencil with openings with a clay-coated Brings paper into intimate contact and the opposite surface of the stencil a leuco color, which contains a solvent and a leuco dye, which forms color markings when it comes into contact with the clay by adsorption, with the leuco color coming through the openings the stencil is pressed onto the clay-coated paper and color images corresponding to the openings on the clay-coated paper Paper can be formed. 2) Method according to claim 1, characterized in that the leuco dye 4,4 ^I -tetramethyldiaminodiphenyl- , methane, Michler's ketone (Michler's Hydrol), Michler's hydrolmethyl ether, 4,4'-tetramethyldiaminodiphenylmethylbenzoate _f tetramethylbenzidine, crystal violet carbinol base, crystal violet carbinol methyl ether, malachherine green carbinol base, malachbinol ether oil, malachbinite green carbinol ethyl lactone, malachbinite green carbinol ethyl lacton . base, Primocyänine-Carbinolmethyläther, Spirit Sky Blue-Carbinolbase, Spirit Sky Blue - Carbinolmethyläther, Spirit Sky Blue, Carbinoläthylether or Rhodamine B-Lacton are used. 3) Process according to claim 1, characterized in that the solvent used is benzene, toluene. Xylene, kerosene, chlorinated diphenyl, diphenyl phthalate, tricresyl phosphate, diphenyl ether. or a mixture used hereof. _ 9098 44/130 ff «I · ( T • t * t * t r • t r. 4) Method according to claim 1, characterized in that the clay is acidic clay, active clay, kaolin, Attapulgite or bentonite used. 5) Method for mimeographic copying, characterized in that a sheet of color with a stencil Brings intimate contact with openings, continuously feeds a clay-coated paper to the stencil and the Reverse side of the ink sheet, which is a carrier substrate with a coating of a leuco color layer with a content of solvent and] jeuko dye, which on contact with adsorption with the clay forms colored markings or colored characters, includes, presses, whereby the leuco color through the Openings of the stencil pressed onto the clay-coated paper and pictures of the color corresponding to the openings on the clay-coated paper. 6) Method according to claim 5, characterized in that that 4,4'-ietramethyidiaminodiphenylmethane is used as the leuco dye, Michler's ketone (Michler's Hydro!), Michler's hydrolmethyl ether, 4,4'-tetramethyldiaminodiphenylmethylbenzoate, tetramethylbenzidine, crystal violet carbinol base, Crystal violet carbinol methyl ether, malachite green carbinol methyl base, malachite green lactone, malachite green carbinol ether, Malachite green carbinol ethyl ether, primocyanine carbinol base, Primocyanine carbinol methyl ether, Spirit Sky Blue carbinol base, Spirit Sky Blue - carbinol methyl ether, Spirit Sky Blue - carbinol ethyl ether or Rhodamine B-lactone used. 7) Process according to claim 5, characterized in that the solvent used is benzene, toluene, xylene, kerosene, chlorinated diphenyl, diphenyl phthalate, tricresyl phosphate, Diphenyl ether or a mixture thereof is used. 909844/1307 8. The method according to claim 5 *, characterized in that the clay used is acidic clay, active clay, kaolin, attapulgite or bentonite. · '■ 9 · The method according to claim 5 * characterized in that the leuco color layer additionally contains non-tacky, finely divided particles with sizes below 50 microns. 10. The method according to claim 9 *, characterized in that that the non-sticky finely divided particles consist of starch, dextrin, sugar, glass or metal. 11. The method according to claim 5 *, characterized in that the Leukofabschicht additionally at least one of the components of fat and oil, wax and mineral oil. 12. The method according to claim 11, characterized in that that the fat and oil from the group of cloudy wax palm oil, semi-drying horse fat, semi-drying sebum oil and hydrogenated oil is chosen. Ι}. Method according to claim 11, characterized in that that the wax is selected from the group of carnauba wax, candellilla wax, palm wax, shellac wax, whale oil and wool fat. 14. The method according to claim 11, characterized in that the mineral oil from the group of solid paraffin, chlorinated Paraffin and petroleum wax is selected. . 15. The method according to claim 5 *, characterized in that that the leuco color layer also contains a tacky polymeric material. 909844 / 13-0 16. The method according to claim 15, characterized in that the ,, sticky polymeric material from the group of Cellulose derivatives, chlorinated rubber and polyethylene is chosen. 17. "Expired according to claim 5 * characterized that the leuco color layer acts as a viscosity-imparting agent at least one substance from the group of polyvinylpyrroles ■ don, polybutene, / styrene polymer and polyolefin additionally contains, whereby the Viskositäfcrertellende. Mean "a molecular weight from 200 to 5,000. 18. Copy or printing material for carrying out the method for mimeographic copying, consisting of a sheet or sheet-shaped leuco dye material, the one A support base having a leuco dye layer thereon, the leuco dye layer comprising a leuco dye and a solvent contains. 19. copier or printing material. According to claim 18, characterized characterized in that the leuco color layer also includes non-tacky, finely divided particles having sizes below 50 microns contains. 20. copier or printing material according to claim I9, characterized characterized in that the non-sticky finely divided particles consist of starch, dextrin, sugar, glass or metal. 21. copier or printing material according to claim 18, characterized characterized in that the leuco color layer additionally contains at least one component of fat and oil, wax and mineral oil. 909844/13 22. copier or printing material.according to claim 21, characterized in that the fat and oil from the group of cloudy wax, palm oil, hold-drying horse fat, semi-drying Sebum oil and hydrogenated oil is chosen. Copying or printing material according to Claim 21, characterized in that the wax is selected from the group of Palm wax. -. Carnauba wax, candellilla wax, / shellac wax, whale oil and Wool fat is chosen. . . 24. copier or printing material according to claim 21, characterized in that the mineral oil from the group of solid paraffin, chlorinated paraffin and petroleum wax is selected. 25. copier or printing material according to claim 18, characterized in that the leuco color layer in addition contains a sticky polymeric material. 26. copier or printing material according to claim 25, characterized in that the sticky polymeric material consists of the group of cellulose derivatives, (chlorinated rubber and Polyethylene is chosen. 27. copier or printing material according to claim l8, characterized in that the leuco color layer as a viscosity-dividing agent at least one substance from the group of Polyvinylpyrrolidone, polybutene, styrene polymer and a polyolefin additionally contains, the viscosity. - ' dispensing agent has a molecular weight of 200 to 5,000. 909844/130 28. A method for producing a sheet or web-shaped leuco color material, characterized in that
a leuco dye, which contains a lexicon dye and a solvent, as a coating on a support
applies and then bends the sheet or web-shaped material thus obtained in such a way that the surfaces of the paint layer can be in close contact with one another. 90 9 8 44/1307