DE2040118A1 - Process for the creation and transfer of print images - Google Patents

Description

• 9 Π Λ Π 1 1 fl Patentanwälte D1PL.-ING. R Weickmann,

D1PL.-ING. KLWeickmann, Dipl.-Phys. Dr. K. Fincke Dipl.-Ing. F. A / Weickmann, Dipl.-Chem. B. Huber

8 MÖNCHEN »6, THE POST BOX 860 820 XHA MÖHLSTRASSE 22, CALL NUMBER 483921/22

XEROX COBPORATION, Rochester, N.Y. 14603, V.St.A. Process for generating and transferring τοη print images

The monochrome or multicolored image printing process consists in transferring patterns, letters, trademarks, etc., which are intended as reversal images on a carrier paper (tape), generally coated with a material that promotes detachment, from the carrier paper to a product by the action of heat, pressure or the action of solvents after which the backing paper is disposed of as waste. The single color or multicolor print image to product ranges, for example, machines with Heißstempelaasehi- be performed, working, for example, pressing or rolling. The actual image is generally produced on the base paper by silk screen printing, rotogravure printing, lithographic or roller film processes Mass production is suitable · In a similar way, a lithograph!

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lioh. They known method for generating τοη print images are therefore dependent on Tom's usual purpose in their economy and effectiveness differed greatly- iioh. For example, it is necessary to create a desired image to be reproduced on a transfer plate In most cases, special dyes and printing plates are produced which are especially suitable for the respective purpose · Daduroh are expensive and long-term procedural braces required. The known Processes are indeed suitable for the production of prints, but they contain numerous technological components.

The object of the invention is to provide a method for generating and transmitting τοη print images that does not have the Haohteile described above and can be used very widely

A solohes method is according to the invention for solving this problem designed in such a way that a layer of a binder suspension, which consists of photoelectrophoretic image particles finely distributed in a carrier liquid, which contain a pigment acting as an electrically photosensitive medium and a coloring agent, a electrical PeId and an image-wise distributed electromagnetic Radiation is exposed to that in the fluid suspension generated image is transferred to a Irägerfläohe and that the carrier surface with a receiving surface is brewed in touch to print the image

For example, we * use a photoelectrophoretic »image suspension, which enables the creation of a single color or a more »colored image« in a non-conductive carrier » liquid are light-sensitive pigment parts sas «·

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pending, this arrangement will be between at least two Electrodes exposed to voltage and selectively aged image to be reproduced illuminated · Normally, dit Image suspension thereby on a transparent and electrical Conductive base is applied in the form of a thin layer, and the exposure takes place through this base hinduoh, while a second cylindrical electrode is carried over the suspension · The particles probably have an initial strength when suspended in the carrier liquid Self-charge, by which they are bound to the transparent electrodeWhen exposure occurs, the charge exchange with the electrode changes the charge polarity, so that the exposed particles migrate onto the roller electrode, causing images on both electrodes to migrate through particle migration · These · two images are complementary to each other · The process can be used to produce monochrome and multicolor images · KIr monochromatic A light-sensitive leilohenart is used, which is sensitive to one color. There can also be a number of differently colored liohtempflndllohsr Teilohenarten can be used, each of which is used for the purpose of lighting Lioht used is sensitive · Bsi the multicolor image · »· * ·» As a result, the suspension contains at least two differently colored types of parts in the carrier liquid, each Teilohenart an electrically photosensitive pigment contains, the mainIiohtabsorptionsband essentially coincides with his sensitivity area · Will the If the suspension is exposed with a multicolored image, the parts migrate to the other electrode in accordance with the light intensity absorbed in each case. In this way they remain Partially selectively on one of the electrodes in an image-like distribution, while the complementary parts are on the other electrode will wander * For example, a · mixture from cyan, magenta and yellow f 11αη η exposed with a yellow image, they wander

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and the magenta particles come off, leaving an image of yellow particles. In ähnlioher manner variously-colored portion away absorb when exposed to a multicolor image, the light of its complementary color in the exposed Fläohenteilen and migrate so that a roll colored image remains _t corresponding to the original image. The image suspension contains intensely colored pigment particles which serve as coloring agents and as a light-sensitive medium · No other light-sensitive elements or materials are required, so this is a very useful process. They are sensitive to light in the range of the spectrum of the main absorption band, whereby, for example, oyan, magenta and yellow parts respond to red, green and blue light If a certain pigment substance is irradiated by white light, it will also generate an image

The generated image can either be fixed on its base, or it is transferred to another image carrier and fixed on it.The other image carrier is designed in such a way that it in turn enables the transfer of its image to a large number of final receptacles using one of various possible methods . It is generally provided with an adhesive or a fixing agent which is applied to its surface before the image. However, the adhesive can also be applied to the image surface after the image has been transferred to the image carrier. If desired, the image carrier may include an image detachment favoring agents or with such agent be coated ₉ depending on the particular intended use ·

The method according to the invention can therefore also be used in the print image mater application of the electrophoretic ^ principle. It can be a single color or a multicolor

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Be an image that can be transferred to a receiving area using one of several possible methods.

The invention is described below with reference to the figure, which is a perspective view of a continuous working duplicator shows · This contains a rotatable transparent electrode 30, which acts as an injecting Electrode, and an image augmentation electrode 40, which is rotatably disposed near this electrode. Above the imaging electrode is a viewing device 45 provided, which contains a plurality of Bollen, welehe provided with such a number and so arranged are that they adjust the image suspension according to their intended use Apply in an even distribution and dimension to the surface of the imaging electrode · Die Coating rolls are arranged in a housing mechanism 47. The transparent electrode consists of an optical transparent glass that is coated with a thin, optically transparent layer of tin oxide · Such a thing coated glass is commercially available under the name HESA-Glaa available «A uniform level of the image suspension is applied to the surface of the imaging electrode applied with the coating device 45 · The image generation electrode 40 has a conductive core «which is covered with a layer of barrier electrode material» Polyurethane, for example, can be used for this purpose, the function of which is to facilitate the rapid exchange of electric shear charges between the wires and the metal electrode surface A barrier electrode material is not required, but it is preferably used since it enables much better process results «A detailed description of the possibilities with blocking electrodes Siph finds improvements and the substances suitable for blocking electrodes in US Pat. No. 3,383,993.

The image suspension for the process of discovery

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consists of a dispersion of finely divided heat-sensitive parts colored in a certain way in a non-conductive one Carrier liquid. everyone can participate in • Suitable light-sensitive pigment material must be used, such Materials are described, for example, in U.S. Patents 3,384,565 and 3,384,566. Rope an inking imaging carried out, so contains the BiIdstoffsuspensien a number of parts in a questioning fluid, whose pigment content is the photosensitive medium and the coloring agent for the parts. If multicolor imaging is carried out, the suspension contains at least two types of Tellohen, colored like a sole, their Properties similar to those of the binary color method If desired, a multicolor image can also be produced by the diffusion of monochrome images which are suitable represent and are superimposed Pensien can also be a sensitizing and / or binding agent for the pigment particles contain. The percentage of pigment in the carrier liquid is not critical, acceptable results will be ten with two Weight percent pigment achieved.

Inside the transparent electrode there is an image inversion mirror 50 which receives the image transmitted along the axis of the injecting electrode and reflects it onto the image suspension in the contact area between the injecting electrode and the image generating electrode arranged to improve the transfer of the image produced on the surface of the injecting electrode to the surface of an image carrier sheet 53. The image carrier sheet 53 is fed ron a Vorratereil · 54 and wiekellelle mash transferring images to an up · 55 wound. Si · contact oil 56 is used

BATH ORIGINAL

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for bringing the carrier sheet up to the surface of the transparent electrode or to the image transmission point. The image transfer port can, as shown, electrophoretically or the image is transferred in some other way, such as by adhesive peeling from the surface of the injecting electrode to the surface of a copy tape, in particular when an image fixing agent or an adhesive is present as a proportion in the image carrier area 53

While the image material suspension in the image-forming zone between the transparent electrode and the image forming electrode is introduced, an image is projected with the mirror 50 between the two rollers and simultaneously creates an electric field in the imaging zone «while During this entire process, the roller electrode 30 is connected to earth.

Any suitable non-conductive carrier liquid can be used to carry out the process according to the invention. Typical substances of this type are Deoan, Dodeomi, Tetradeoan _9, melted paraffin wax, melted beeswax, and other melted thermoplastic substances, Sohio Odorless Solvent, a kerosene component, available from the 011 Oompany of Standard Ohio, Isopar 0, a saturated branched chain aliphatic hydrocarbon mixture available from. of the Humble Oil Company of Hew Jersey, olive oil, mineral oil, linseed oil, sunflower oil, cottonseed oil, maritime oils such as spermacet oil and cod liver oil, silicone oil such as dimethylpolysiloxane (Dow Corning Go), castor oil, seed oil, petroleum oil, fluorinated hydrocarbons such as Freon, a product of DuPont, sow! «Compatible mixtures of these substances ·

The voltage connected to the electrodes came liuMrhmli »' a wide range can be varied · TTm a «good · anti-glare solution and to receive tinting throws, SI should «field strength tu '

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the image suspension at least 5 volts per micron and Preferably about 20 YoIt per micron or more, so since an electrical field τοη at least oa. 300 volts generated will · the tension you need depends of course Sound the distance between the electrodes and τοη the strength and the Type of barrier electrode material on the surface of the imaging electrode from · Generate voltages τοη 8000 volts Good quality images. The upper limit of the field strength is only due to the flashover voltage of the image substance suspension and the barrier electrode material are determined.

Question ₉ whether the method according to the invention is used for single-color image generation or for multicolor image generation "determines the type of image generation and the shape of the image carrier surface. In single-color image generation, negative-positive image generation or positive-vegetative image generation is generally carried out. When exposed to activating radiation, the exposed surfaces migrate through the carrier liquid onto the surface of the imaging roller and leave a complementary image on the surface of the transparent roller exposed with a color slide, a positive color image is produced on the surface of the transparent electrode.

The image generated on the surface of the transparent VESA electrode is based on one of the methods mentioned above Transferring the surface of an image carrier surface · When performing the procedural steps, it is possible to select the desired BiIi to be found directly on the surface of the spectral electrode

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witness. In the case of a multi-color process, this can be done using illumination the image suspension with a Kodaoolor negative be performed. If the image is generated directly on the surface of the barrier electrode, it should be based on this the image carrier surface are transferred. However, an image carrier surface can also be provided as a barrier electrode layer be used as a removable sleeve on the conductive core the imaging roller. · In this case, the sleeve only needs to be removed from the roller.

Any suitable material can be used as the image bearing surface will. Typical suitable materials are plastic films such as Mylar (polyethylene terephthalate), Teflon (polytetrafluoroethylene), Tedlar (a polyvinyl fluoride film), polyamides such as Versalon 1112, available from General Mills, polycarbonate resins, Types of paper such as glassine, parchment paper, clay coated paper and various metal surfaces such as Aluminum and messingo

The image obtained on the image carrier surface is generally my fixed This is usually done after one of the well-known Process, for example by coating the image carrier surface beforehand or by coating the developed one Image with an adhesive that fixes the image · Typiaohe such substances are thermoplastic substances such as polyamides, polyisobutylenes, polyvinyl chlorides, epoxy resins, polyurethanes and acrylic resins. Other adhesives are carbon rubber types, Rosin, polystyrene, polyethylene, starch, gelatin, Gum arabic, tragaoanth gum, hydroxyethyl cellulose and Mixtures of these substances · Will the adhesive fixative in the surface of the image carrier stored or on this provided, co the fixation is generally done duroh Exposure to heat or exposure to a solvent re. As already stated, the fixative can iodooa also applied to the surface of the generated image

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will. The adhesive effect can also be implemented by bits on the receiving surface if it has a sticky surface or a sticky surface, what for example takes place through the action of heat. In this case, the developed image can be fixed on the image bearing surface Be terziohtet.

Generally speaking, the image carrier surface is with a Part of the substance or a layer of one that promotes detachment Provided with substance that accelerates the transfer of the generated image to a receiving surface, which is the last Station of the process represents · Typical substances of this type are polyethylene waoha, microcrystalline wax and silicones. They are preferably used when paper is provided as the image carrier surface.

It should be noted that the device shown in the figure is not intended to limit the invention in any way, because this can also be carried out with other built-up devices. For example, the imaging electrode also have the shape of a flat plate, which also applies to the injecting electrode. Depending on the respective Configuration of the electrode and other types of procedures can both electrodes be clear or opaque be"

An injecting electrode is to be understood as meaning an electrode which exchanges charge with the allows photosensitive particles of the image suspension when this is exposed to radiation, so dafi a change in the self-charge polarity of the particles takes place · A blocking electrode should be understood as an electrode the electrons are injected in negligible quantities into or from the loan-sensitive particles when it comes into contact with the electrode surface

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come. The blocking electrode holder is used for prevention a partial ohmic oscillation in the imaging arrangement

After the development of the image β on the surface of the image carrier surface, For example, on the band 53 shown in the figure, the image bearing surface bit is the electrophoretic generated image in contact with a receiving surface brewed onto which the image is to be transferred Any suitable material can serve as a receiving surface Typical such materials are paper and plastics such as Mylar and Tedlar, glass, ceramic fabrics, metal foils Brass or aluminum, Hols, Giρβ and various Teitil materials. The image can be viewed on the receiving surface appropriate and known procedures are transferred, in the case of for example by the action of τοη heat, pressure or solvents. The method used in each case generally depends on the adhesive composition in or on the surface of the image carrier ab «In some cases, for example if a polyamide is intended as an adhesive additive, any the above-mentioned methods are used to transfer the developed image. The one provided on the image carrier surface Image can be transferred as a whole to the reception area be what is common by the presence of a die Removal causing means takes place, the image carrier and the image can, however, still adhere to one another, wherein the image carrier acts as a film covering the image held on the receiving surface. Here the image carrier should be transparent. If the image carrier substrate is rom If the image is removed, it can be fixed to the receiving surface by placing a second polythole on it, for example is sprayed with a thermoplastic compound. One such substance is Krylon, an acrylic resin. To the Solvent image transfer, any suitable solvent can be employed depending on the fixing agent used. Typical solvents are toluene, Acetone and water »

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The method of the invention is applicable to many types of Reception surfaces can be used, for example for note cards, greeting cards, wall decorations, jewels, paper signs, Dinnerware, porcelain, glass, bookends, identification cards, Tex " utensils, cushions, cushions, towels, tassel towels, soy goods and many other surfaces. The method according to the invention is therefore very versatile and can be very diverse Needs to be adapted. The image carrier surface can, for example, on both surfaces with a Adhesive may be provided so that the image can be applied to one surface and the support surface can be used like a label by attaching the other surface to a holding surface is glued

The injecting electrode should preferably be made of an optically transparent material such as glass, which is coated with a conductive material such as tin oxide, copper, copper iodide, gold or similar. But it can too other substances are used similarly to many semiconductors, e.g. cellophane film · Such materials are not normally considered a conductor, but they can injected charge carriers of the appropriate polarity from the components under the influence of an electric field record and therefore count su the method according to the invention usable materials. The use of the more conductive Substances allow better charge separation and prevent possible charge accumulation on the electrode. The barrier the imaging electrode, on the other hand, is selected to allow injection of electrodes into the photosensitive Plgment material parts are prevented or largely turns off when the particles reach their surface. The core of the image suction electrode is made of a material ■ lt high electrical conductivity · Typical such substances are conductive rubber, metal foils made of steel, aluminum, Copper and brass. The core of the elec-

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trode a high electrical conductivity in order to be able to switch on the required voltage · If a material with low conductivity is used, however, - a special electrical connection can be made to the back of the barrier at this electrode. For example, as a barrier layer, a semiconducting polyurethane may be provided, whose conductivity is between 10 and 10 * "^ Oam ea" If a non-conductive hard rubber core verw®nitt _f as a metal foil may be provided as a support for dit Sperrnlektrodensohioht be · The barrier layer WAB uioht unbV It should be provided to a certain extent, but it improves the results of the image generation significantly bound! particles would be discharged · "Partial oscillation is prevented on these yeiae '· Because» Ergeltali »int eiae Yerbes ·» serte image toning diohte image resolution · Even if the barrier layer lends the passage of some load-bearing carriers to you particles _f erm8glioht eie nook au the gate "■ 'materials preferably used calculated _f-if iieser Si If the charge carriers were to be recovered, the polarity would not be reversed. Not possible · As a barrier electrode material · can be used, for example, baryta paper, ledlar, a polyvinyl fluoride, mylax, polyethylene terephthalate and polyurethane if · any anti · suitable · material with a specific 'wileretiM. "Tom on · 10 ™ OIm β» or more can also be used · »· Iffiiieh · fabric · with this resistance value ai» it Z «lluloa« «oetat tttberoge» n «e paper, cellophane and polystyrene ttni polytetrafluoroethylene« more for the injecting · mni di · Sp «rrel« ktroAo towmloV · bar · bar Substances as well as 'liohtwipflndllolL ·. Teileli «imrt« ii _for all partial migration pigment material ·. Ve-rwendlar «iiii _f eml d« n · types of procedure are ia the IS-Pattiateekrift · ».3 584 565 ₈ : 3' 384 566 , 3,383,993 and 3,383 48 · fcoeohriobeiu

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Any suitable photosensitive pigment substance of the types described in the above-mentioned patents can be used in the process according to the invention, the selection of which depends largely on the required photosensitivity and the specified sensitivity spectrum.Typical photosensitive substances are substituted and unsubstituted organic pigment substances such as phthalocyanines, for example Monaroh Blue G. , the beta form of copper phthalooyanine available from Hercules, Inc., quinacridones such as Monastral Red B available from duPont, Algol Yellow 1,2,5 »6-di (C, C'-diphenyl) -diazoanthraohinone, CI No. 67300, Irgazlne Red, trisodium salt of 2-carboxylphenylazo (2-naphthiol-3,6-disulfonic acid, CI. 16105 »3-benzylideneaminooarbazole, 3-aminocarbazole, Watohung Red B, 1-4 · -Methyl-5'-chlorazobenzene- 2 ^> -8ulfonic acid-2-hydrozy-3-naphthenic acid, CI. No. 15865, inorganic pigment substances such as Yellow 96, N-2 ^M -Pyridyl-8, i3-dioxodinaphtho- (2,1-bj 2, 3'- d) -furan-6-carboiamide and Cadmium sulphide, cadmium selenium, selenium, antimony sulphide, arsenic sulphide, zinc oxide and mixtures of these substances The image suspension can contain one or more different types of light-sensitive parts that have different sensitivity spectra

The following examples are provided for further explanation of the process according to the invention, proportions and percentages refer to weight, if not stated otherwise.

In the following examples, the NESA electrode is made of a Pyrex-Olassyllodetr, which has a tin oxide layer of 0.025 mm thick. The imaging or barrier electrode consists of a conductive steel core old 10 om Diameter and a 6.5 mm thick layer of polyurethane as a barrier layer »

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Example I.

A BildstoffBuepeneion in the form of a Dreietoffmiaehung is prepared from equal proportions of ¥ atohung Red B, a barium salt of 1- (4-methyl ^t * -5'-ohlor-2 -sulfoneäure ^l) azobenzene ".2-hydroxy ~ 3-naphthoic acid, CI. No. 15865, Monolite Past Blue GS, a mixture of the alpha- and beta-form metal-free phthalocyanines, available from Arnold Hoffman Go., 0.1. No. 74-100 "and the yellow pigment toffee N-2" -Pyridyl-8, i3-dioxodinaphtho- (211-bj 2 \ 3'-d) furan-6-oarboxamide in mineral oil, the pigment in total θ wt. # of the forming substance suspension makes up «A PiIm of this forming substance suspension is applied to the surface of the barrier electrode with a thickness of approx. 0.13 am. While the image exposure is passed between the transparent and image generation electrodes, a color slide is projected onto the image generation zone. During this exposure, a positive voltage of 8,000 volts is used to generate an electric field on the image generation suspension. A 500 watt quartz iodine lamp is used as the light source. The light is passed through an optical system and projected onto the suspension with a first surface mirror The surface of a Tedlar image carrier is transferred, which was previously coated with a solution of the synthetic resin Emerez Polyamide 1540 in isopropanol Heat press is used. The press is then opened and the carrier sheet is removed. It results in an imaged glass pad ·.

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Examples II - YI

The procedure of Example I is repeated with the difference that the final image transfer is based on the following Documents are carried out: paper, plastic (polystyrene), cotton tuoh, polyester tuoh (Kodel), aluminum foil. In each Trap results in a very good image transfer.

Examples VII and VIII

The procedure from Example I is repeated with the exception, that instead of the resin fixing agent 1540, the following Adhesives are used}

Example VII Emerez 1532 (polyamide resin) 85 #

Staybelite Ester 3 (rosin ester) 15 ^

Example VIII Wing Taok 95 (Polyterpen) 20 $ ' Paraffin wax 70 i »

Elvax 260 (ethylene-vinyl acetate copolymer) 10 »

Example H

A three-substance solution is produced by adding equal proportions of the cyan pigment Monolite Past Blue GS, a mixture of the alpha and beta-form metal-free phthalocyanines, available from Arnold Hoffman Co., No. 74100, of the magenta pigment Watchung Red B, a barlum salt of 1- (4 ^l -methyl-5 ^l -chloro-2'-sulfonic acid) -a «above« ol «-2-hydroxyl F-3-naphthenic acid, CI No. 15865, and from Algol Yellow GG, 1,2,5,6-di- (C, C'-diphenyl) thiazole anthraquinone, CI No. 67300, available from General Dyestuffs, can be dispersed in mineral oil. The three-substance mixture is applied to the surface of the barrier electrode with a thickness of approx. 0.25 μm. According to the method from Example I, a positive color image is created on the surface of the NESA Un-

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The image fixing agent used here consists of 2O # Polyterpenhara, Wing Tack 95, available from Goodyear Tire & Hubber Co. _f 70 $ paraffin wax and 4096 Elvax 260, an ethylene-vinyl acetate copolymer from duPont · A thin film of toluene is applied to the area provided with the image, which is then brought into contact with a cotton cloth · When separating is on the cotton cloth a color picture of good quality is available *

Examples X - »XIY

The procedure from Example IX is repeated with the difference that, instead of the cotton cloth, the following sub layers are used paper, GHas, Meesingbleoh »Eunet * · fabric (polystyrene) and polyester tuoh (Kodel) · In every lalle there are pictures of good quality ·

Example XV

The procedure of Example IX. is wiedtrkolt with. with a difference that instead of toluene Aoet © n is used The results are similar »

Example XYI

The procedure "from Example IX is repeated as follows" decided that the fixative wnggelaeöen on the carrier surface becomes .and the image on its receiving plane · by Ββ ·. Spray with a solution that fixes the following proportions exists.

GtummiarabiouH 3 g

Oarboxyjfieiihylhydroxy-

ethyl celluloae

(Heroulee Powder 0o #.) 5 g

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2Ü4U118

Water 150 ml

Glycol 0.5 «1

The image is then moistened with water and on contact ■ Transfer to a sheet of paper. Da · Bit silicon coated Paper is then sucked off and contains the print image

Example IYII

The procedure from Example XVI is repeated with the Un * It was noted that the image was sprayed onto the support surface ■ with a 5% solution of polyisobutylene (Oppanol B-15) is fixed in petroleum ether. The image is then formed by applying pressure to the surface of an aluminum foil transfer·

Example IVIII

The procedure of Example I is repeated using the image Clay of the transparent electrode on a silicone pad Paper is transferred · The surface carrying the picture is pressed against a polystyrene bottle and transferred to the bottle by the action of heat on the back of the paper. When the paper is separated, the image is on the surface of the bottle "

Example III

The procedure from Example I is repeated, the image being transferred to a Mylar carrier surface an αϊas underlay in contact with the action of heat » brakes, after which cooling takes place »

Example U

An oyan-colored image material suspension, which consists of 4 g of I-phthalo ayanine, 2 g trioresylphesphate (TOP), 0.5 g beta-carotime limd

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oa. 160 ecm of spermacet oil is made with a strength of oa. 0.13 mm applied to the surface of a KBSA lead electrode. The suspension is τοπ with a quartz iodine lamp 500 watts exposed to a negative image, whereby an electric field with a positive voltage of approx. 7000 volts is generated · Bs results in a positive solid color Image on the surface of the image suction electrode. This is transferred to a Mylar carrier surface and fixed by using the fixative from Example XVII. Then the image is pressure-transferred onto the surface of a brass sheet to form the printed image to create· ·

Although certain substances and Process conditions are mentioned, other substances, as listed above, can also be used with similar he "* be used. Further process steps can also be used or amendments may be provided if this is favorable. For example, a multicolored picture can be created by first adding color negatives to a color image and then generated monochrome images corresponding to these separations at three different image extraction stations · Furthermore, additives can be added to the image suspension be provided, other spinning can be used, the layer thicknesses are varied and other sensitivities are present, so that in each case an improving, synergistic or otherwise beneficial effect on the properties of the procedure results. For example, various sensitizing agents can be provided in the image suspension that improve the binding results

Further embodiments of the invention are known to those skilled in the art possible after knowledge of the above description, they are encompassed as a whole by the basic idea of the invention

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Claims (1)

20AO 1 Claims Process for creating and transferring print images, characterized in that a layer of an image suspension consisting of in a carrier liquid finely divided photoelectrophoretic image material parts consists, welohe acting as an electrically photosensitive medium and as a colorant pigment are exposed to an electric field and an image-wise distributed electromagnetic radiation becomes that that generated in the image substance suspension Image is transferred to a carrier surface and that the Carrier surface with a receiving surface for printing the image is brought into contact 2. The method according to claim 1, characterized in that a carrier surface is used on its surface an adhesive fixing agent is provided " 3 · Method according to Claim 1, characterized in that a carrier surface is used, on the surface of which an agent promoting image detachment is provided. 4. The method according to one of claims 1 to 3, daduroh marked, that used an image suspension will that at least two differently colored fine Contains distributed types of parts in the carrier liquid, welohe each from an electrically light-sensitive Pigment material, whose main ligth absorption band substantially coincides with its main sensitivity range, 5. Method according to one of claims 1 to 4, because 109809/1826 indicates that the electrical PeId between at least two electrodes is generated. 6. The method according to Anspruoh 5, characterized in that the exposure takes place through one of the electrodes, which is permeable to the exposure radiation. 7 «Method according to one of the preceding claims, since» characterized in that the carrier surface from the Eap ~ catch surface is separated θβ method according to one of the preceding claims, since » characterized in that before the transfer of the image to the receiving surface on the existing on the carrier surface An adhesive layer is applied to the image 9 · Method according to one of the preceding claims, since · » duroh characterized that during the contact of the carrier surface with the receiving surface there is an effect of heat is produced'· 10. Method according to one of claims 1 to 8, characterized in that that during the contact of the carrier surface with the receiving surface a solvent for the adhesive Fixing agent is provided 11. The method naoh one of the preceding claims, characterized marked that the contact »between the carrier surface and the receiving surface is effected with the influence of Sruok» 12 · Method according to one of the preceding claims, characterized characterized in that the surface of an electrode provided for generating the electrical VcIdcc is used as the carrier surface » 109809/1826 ti Blank page