DE1903096A1 - Photographic process for the production of relief images - Google Patents

Description

Phobographic process for the production of relief images

In silver halide photography, the usual type of development is so-called "chemical development ¹¹ ". In chemical development, a visible photographic image is obtained by reducing metal ions of the water-insoluble silver halide contained in the latent image at the exposed areas of the image support chemical development developer solution used not an image-forming material. However, if the chemical developer is used for a long time, image-forming material may separate in it «

The physical development, on the other hand, takes place with developers which already contain image-forming material from the outset, and this is deposited on the in the form of a latent Image exposed areas of the image carrier. These physical developers can be in the form of a single solution, e.g. when a reducible metal compound, such as silver nitrate, in combination with a photographic reducing agent

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medium, like Motoi, is used. In general, I know stabilizers and other additives are added to such developers in order to prevent the rapid decomposition of these solutions.

Su don physical developments belong abez · also tolcho in Ροπΐ) of gstrenutan solutions, where e.g. the one solution the reducible metal compound and the other solution that photographically © contains reducing agents. Such, aue separate Solutions to existing physical developers don vortsil an extended life in developing. If the process continues according to the invention, mix However, these ideas are partly related to one another.

Physical developers are also used as so-called amplifiers, xm die. Increase the optical density of visible images observed by chemical development see below, eB in ΰίίτ. 8ίλ-barhalogoniclphcitograpliie. Furthermore, phyQilcaliseho iäntwic ·· - ler in groaaom üafangs to develop other light oiapfinäli · -

rser uses - laai üoiion a photolext --r bo: i ti or i? jei; with aktivierenäer radiation activates vjiü üc.c "f.rt ⁴ 'i capable Y / ird, BXL don" äulänen exposed Sttillen a ciieEischc reaction au £ j. An example for such photolei 'mn eot i'i ~ tandioxid; volchos bsi dt; r Einvfir: atng suitable Aktivior ffiittol rt-vereibel activated. v / ir..T.

The invention applies to photofir ^ -t-lrilsche! '' Erfaiircn rror Tlorete lung from Ile'i. :: ciMi'ler2i, dio dai'in ceotehen, de. ^ O mcri \ '\): in einera Bi'.ldtvä ^ he ain latent Bii & srssugt by san fleii Eildt-eii ^ or, dor one on ü.om 2i'tli /: r a'bgoochiäd & ne, -: '. τ. in a binding agent oingolagorten! .ichtaBipfindiiehaK ^ i existing ".iehteiapfiBdlicko 8ch.i.oht has, tolloiitct, (2) the right picture physically ontv / wrapped, VIa ir'.r. lic'itsensenso layer itself Fielelctiv τοη lets remove your tracer, and ^) dio Xichtaiapfindllche layer ε jlefc ^ Cv of dei. bolichtetsn places of the image carrier by Abw &'j3hea _s Abbrürstsn ο represent η ch similar b & k & ni-tsr. procedure removed .. This ancestor sr. hnt thnn advantage, that it is very versatile: L ^c .! t, because dr-.e end product for different Zvreck ©

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leaves. If the light-sensitive layer and the support are selected so that they produce different visible effects, it is possible to obtain an impression which, depending on the visual properties of the support and the light-sensitive layer, is either a negative or a positive Originals represents. If, for example, the carrier is colored or black. If the light-sensitive layer is white, this process creates a negative of the original. YiQwi the light-sensitive layer is black or colored and the support is white or light-colored ₅ the impression is a positive of the original. If a radiation-permeable support and a radiation-absorbing light-sensitive layer are used, the impression obtained is a very good diazo template for use in the slide The photosensitive layer can, for example, absorb ultraviolet rays and the support for ultraviolet rays can be transparent or translucent. The process according to the invention is also suitable for the production of PlachdruokpXatten. For this purpose, one can use the support and the photosensitive layer sa, dase exerts carrier with respect to the shaft oleophilic and hydrophilic I3T the layer with respect to the support, or vice versa. Wsnn sB "Oer carrier in" with respect to the photosensitive layer hydropliil and the photosensitive layer iu respect to the support oleopliil is select , the according to the invention Y if the impression obtained is used in conjunction with a printing ink saf O'lhasis as a printing form, α to bend positive copies of the original. Ve ^ v / man enlet other hand ¥ erteBdu.ng with such Plaohdruckple.tte a printing ink on the basis of a polar äev Löaungomittelsso obtains a negative Kopxs deo original. If the support is oleophilic with respect to the photosensitive layer and the photosensitive layer is hydrophilic with respect to C.qil Krager, the imprint obtained is like a lacquer plate, like whether a printing ink is polar or a polar solvent used, negative or positive copies of the original? * -

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Carrying out physical development until the image surface can be selectively removed means longer physical development, which means that the surfaces become fragile and can therefore be removed by wiping, brushing or simply peeling off where the ES Id carrier dried iat. Bs is believed that ₅ tlie physically developed within longer periods BiXaflächcn due to the strong accumulation of metal or BOJiwtigeia imaging material in the Bindomittel or dom i'räger assume a fragile state, usually wae fracture or prompt DEB binder leads. Therefore can any measure _? which accelerates or favors such an accumulation, can be used within the scope of the invention to prevent the removal of the light-sensitive layer from the exposed parts of the BiW carrier. So the physically developed areas can be treated with a bleaching agent When the silver images on the exposed tunnels of an image carrier, which have been subjected to a physical development, are converted into silver bromide images, the volume of the image increases considerably, which increases the appearance of the light-sensitive layer the exposed areas is increased. also softening Bleictoittel that serstören the binder in dsn BildflMchen of Biidträgers, can be used to accelerate the removal of the lichtcmpfjbidlichen layer in the exposed areas. Such softening -wirkonöon BlaichiBittel contain peroxides uiiß are from BleiciüRi ttoln su lower cUaiea. äie the binding agent does not destroy but ax your silver picture react -and thereby a .Auibuu l? av. a buildup in the BiMfiäcIien act to crhöhsi and the Zerbrechliohkoit eggs exposed, physically entvicfcolten points of the image carrier in this Wei "jo ..

Physical developers that can be used in the context of finding a. baX ^ Grisougonde substances which cause the image to be built on the exposed tunnels e'lYias Xi ei-tciiipfindlichen image. Verv / endbaro physicalJ.pscho according to the invention

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Developers are described, for example, in US Pat. No. 3,157,502 in British Pat. No. 1,043,250. These physical developers contain an oxidizing agent and a reducing agent. The oxidizing agent is generally the image-generating component of the developer and "preferably consists of a reducible metal compound. Under certain circumstances the reducing agent can act as an image-generating component of the physical developer. Organic or inorganic oxidizing agents can be used as the oxidizing component of the physical developer. Preferred oxidizing agents contain reducible agents Metal ions that have at least the same oxidation strength as the copper (II) ion, such as 25.Bo the metal ions Ag ⁺ , Hg ⁺² , Pb ⁺⁴ , Au ^h1 , Au ⁺³ , Pt ⁺² , Pt * ^{> 4} , Ni * ² , Sn ⁺² , Pb ⁺² , Ou ⁺¹ and Ou ⁺² .

The reducing agents of the physical developers according to Invention are compounds such as the oxalates, foraiates and the Ethylenediamine tetraacetate complex compounds of Kotallen with several valencies, as well as organic compounds, such as dihydroxybenzenes, Aminophenols and aminoanilines. Also tetracysaiethane and ascorbic acid can be used as reducing agents according to the invention be used. Special compounds suitable as reducing agents are, for example, »Hydroquinone or derivatives thereof, o- and p-aminophenol, p-methylaminophenol sulfate, p-hydroxyphenylglycine, o- and p-phenylenediamine, 1-phenyl -? - pyrazolidone. Alkali and alkaline earth oxalates and formates.

Also suitable as physical developers in the sense of dor Inventive galvanic baths as described in the US patent 3,010,883. To apply these galyanizing solutions, it is generally necessary to emboss the photosensitive layer on an electrically conductive! abzurjohsiden. Examples of suitable electrolyte solutions are water-based Copper sulfate solutions, aqueous silver trate solutions and other • other Nickel chloride solutions containing a small amount of sodium thio sulfate contain.

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Rcsia can contain the physical developments of organic acids or alkali salts of sol'ao-ii, which react with metal ions under complex metal ions. IPernar know the developers also anüar «KoiaplaaitoiläuagsaBitΐβΐ unci de:;?« Gloichen included to the images diffraction, the durability of the developer solution and aonsti ^ o properties, si », -vorbasoorn,

The licensed substances that are also suitable for the light-sensitive substances according to the invention include all light-sensitive substances that are physically developed. ItaUer the invention includes di © Yorv / andraag of l: ichtarapfincllichsn materials such as silver halide and Pho toi fester, the activating by the action of radiation is activated and thereby befiihiiyt "v / earth in the exposed areas a chelisalcticn ausaulünen D ± o orfindungQgoiaäs3.. preferred

or l? aotokätalyaGtOi'ön are metal-containing photo-. ? ü: i.ao lieror.-augte group of such borrowed siapiindlricher

3ίηΊ imoi '£ ^-: Aniüche Yerbindungen from einsra Kotall and Einein iiichbp.stalliachen' element of the group VIA äes Periodic Systarca, such as 0: _t: II1c, aB zinc oxide, liitanäioxid, Zirkoniuiflicliosiid, Gormaniirtiifliurüid- * invited: .inQtx'iosid _f Zinnosid , Metallsuli'ilo, like öadmiiiTnßu ^ fid, Zii ^ cKulfid und 2iar.di3ulfid, as well as Het;: illfJGTui'ii'l-3, wio Caditiiiuaßolonid. Particularly avoided photolat-. · Of this group and metal oxides. Sitana dioxide is supplied because of its good egg oil failure, beaordoivj liQVOTzv.g · *. inalioaozi ^ .e ^ G ^r / iv «d Oritsndiozid rait einsr • iiifj ble: jOn C? iii! lchrj-ii.jrtöse vou» repentant than atwa 250 θιλ l) evorzugi ^: _} daa 'jt / j /, 0.5 Ids 30 StpTidoa Lei 'JJenpax'atu ^ sn swisehen about 2OC and 9iU ^r J: "- ■ & .iiner o ::, ytlii?: E niC.sn. ". Υτ-ϊο ^ ρΙιΜί-'ο Löhaaüult v / orden iot ^ m.:0 böEJoKiera l.cvcvisugt- vii / ä iurch. Hochtsiapa ^ aturpyrolyat from ΐ1 · '-ίλΏ} ίν., 1ο <Λ ·; η3.ίΙ crii'BUi.tuü wltandloiiicl.

Ticli gewiosrp;. 'L: .ior-- zzini.vnue. 3; o ££ e alc Photoiii! wiuii.o dor Srfj.n6.un ^ "Su sisöan pushing soliüren eg 2Γΐ3". ^"; .ϊϊίΛΐη ^ ;. Γ. ?. -./Id _5: IIIT a r isiltjare: tiviertea ^2: .akouD £ Jd, aktlvioi'tsc with zinc '' ilnko.clä, Haagua ektiTiertec SiZiikphogphai ;, nit Csaisch a bus Kupf "rsulfid, An1; iii: cu-3 "« \ lfi. «imd süasnesiuiDoxiü, as well as Gaö.Eiuir;""ßor;> / t.

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"BAD ORIGINAL

The exact definition of the effect of the photoconductor is not yet known: however, it is assumed that one or more electrons from the Yalensbath of the photoconductor or photocatalyst are in this state under the inactivating radiation on the biotoconductors or irhotocatalysts according to the invention .aband of the same or at least a similar excited state, so that the electron in question is loosely bound, whereby the Bicto'.conductor changes from an inactive to an active form connection is, epic finds the Sbotoleiter and acting as an electron acceptor compound one Blektroiienübertragung instead, which lie latter compound is reduced. Therefore, you can use simple einss KanäversucIiB "to fe9tsustellen _s sin if gegelißner substance as Photoleitor or photocatalyst ^we? js: t; or not. For this "purpose, if you look at the substance in question with an aqueous silicon nitrate solution," with the exclusion of light, "if there is hardly any reaction" then the mixture is exposed _c B ₀ with xiltraviolettoBi light If the mixture to be examined darkens faster than aXe öis silver nitrate solution, then the substance in question is a photoconductor.

Her A ".: St £ iT-d ß ^ iischen the valence band and the conductivity band of a Vui? I: indvj2g i>esl; imEt the energy that is necessary for electron transitions. The more energy is required, the more reliable ijt lie frequency to which the photo editor responds. As is well known -ram-. iiisiL dan Banoabcitaad with these connections VQEkIeiM ©! T.ij / iidsrn raan aXß Äkr.iTator a Premdverbindur-g zu-RQtüt * die- '? nt.wearr as a result il: rsr atomic dimensions, or il at-3 olr.Q bes; oadero vsrl; Ot3n3 electro ^ iache zone structure

atj or sciiXxeasXich. due to the presence of Tangstol len a "Poaatc rnix'-eaus in the Sviischonsone awischi-n dem Valen :: - band uni c-i * Ixeitktiv: .gi; 8lteljaEd dio sheet metal configuration of the

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light-sensitive connection in a state of tension brings about, whereby the band gap is narrowed and the ability to donate electrons to the conductivity band is increased. Phosphors almost always contain such activating substances. These impurities can have such an effect that a compound that is inherently non-photoconductive becomes photoconductive. It is believed that the (Cr-Sr) S-compounds are an example of this group of compounds. On the other hand, too high a level of impurities can cause the Impair the effect of a connection as a photoconductor.

The photoconductors used according to the invention can be used for visible Light or for light of other wavelengths by doping with Frens & ionenj addition of fluorescent substances and / or be sensitized with the help of sensitizing dyes. Among the general sensitization of those which can be used according to the invention Suitable photoconductor bleachable dyes include ZoB. the cyanine dyes, the dicarbocyanine dyes, the carfcoeyanine dyes and the hemieyanine dyes. Further Dyes that are used to sensitize the photosensitive Suitable medium are those on pages 371 to 429 of the work "The! Theory of Photographic Process" by CEa Kenneth Meos (Verlag HcMllan Company), 1952, described cyanine dyes. Other suitable dyes are the so-called Tripheaylme-iftau dyes, like crystal violet and basic Iuefcsin, MphsnyXiscr & miif dye β * like. "Auroamin © 0", and Xaa Shenf items, such as "Bhodanine B".

All activated electromagnetic rays can be used as the feträdlirngsguellen for the generation of the 3 initial latent Mlöes. So see aictisiachea light, X-rays or gamma rays to excite the photoconductor. Electron beams and other corpuscular features can also be used instead of the usual forms of electro & iagetic radiation for image generation according to the? Invention can be used. These different activation points are summarized here under the term "activating radiation"

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As a support for the photographic image support according to the invention A suitable underlay of sufficient strength and durability is used. The carrier can be in any In the form of, for example, films, tapes, rolls, etc. This plate or film can be made of any suitable Materials, e.g. wood, rag paper, cellulose paper, plastics such as polyethylene terephthalate and cellulose acetate, Cloth, metal such as aluminum, or glass. If the physical development takes place electrolytically, the carrier must be electrically conductive.

Suitable binders for the photosensitive layer include substances such as gelatin and various plastics, like resins. The binder is preferably solvent permeable, but in the working solvent of the physical Developer insoluble at the temperature used. Examples of suitable resins are copolymers from butadiene and styrene, polyaoryl acid alkyl esters, such as polyethaoryl acid methyl ester, Polyamides, polyvinyl acetate, polyvinyl alcohol and polyvinyl pyrrolidone. These binders can depending on the intended use of the image carrier be transparent, translucent, or opaque. Furthermore, the binder can be hydrophilic or oleophilic, and these Properties can be enhanced by incorporating hydrophilic or oleophilic fillers in the binder.

The ratio of photosensitive material to binder in the light-sensitive layer of the image carrier is large Significance to reduce the duration of physical development required to create a relief image. Preferably the ratio of photosensitive material to binder is in the range of about 1 to 50 parts by weight photosensitive material per part by weight of binder. It is twofold, the proportion of light-sensitive 'Increase material to binder up to just a little before the point at which the photosensitive material ceases to be in the form of a continuous film. Such a light-

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Sensitive layer with a high proportion of light-sensitive material, a lot is possible with the method according to the invention more easily into the fragile state. The ratio of light-sensitive material to binding agent should not, however be so high that the photosensitive layer becomes so brittle that it no longer adheres to the support. The respective ratio of photosensitive material to binder depends on factors such as the type of light-sensitive material, the type of binder * the type and duration of the physical development and the intended use of the finished image.

example 1

A black carrier made of cellulose triacetate, which is primed with a mixture of gelatin and cellulose triacetate, is used on the primed side covered with a white light-sensitive layer. The light-sensitive layer consists of finely divided titanium dioxide is dispersed in a gelatin binder, and the gelatin binder is hardened by adding formaldehyde. There are 2.8 g of gelatin per 8.5 g of titanium dioxide. The light-sensitive layer is applied in such a thickness that 3.8 10 * g of titanium dioxide are applied to each cm of the support. The image carrier coated in this way is immersed in 1 η aqueous silver nitrate solution, dried and dried for 60 seconds through a step wedge * hinduroh with a mercury lamp mrlt exposed cold cathode, which stands at a distance of 7.6 on from the image carrier, so that the entire light intensity

* The step wedge is a transparent fiIn with 21 different density spots, which are in steps of 0.15 density units are graded «, level 21 has the lowest optical density of 0.05 density units and enables the strongest exposure of the image carrier. Level 1 has the highest optical Density of 3.05 diohte units and therefore leads to the lowest exposure of the image carrier.

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457 meter candles, whereupon the bearer cleared for 4 days developed in a developing solution of the following composition will:

Ferroammonium sulfate "6 HgO 3" 39 g

? errinitrat.9 H ₂ O 6.09 g

Citric acid monohydrate 1.73 g

8 silver nitrate 2.88 g

"Army 12D" (a distilled »Geaiseh

aue 95 percent by weight dodecylaein acetate,

2 percent by weight deoylamine acetate and

3 percent by weight tetradecyl ain acetate) 0.034 g

"Synthrapol N" (a condensation product of alkylated phenol and
Ethylene oxide) 0.034 g

Made up to 125 ml with distilled water.

When taking out the film strip, look at the physical Developer is found that the light-sensitive layer in the most exposed levels (level 14 to 21 of the wedge) has peeled off the support, while the light-sensitive layer on the surrounding «unexposed or less strongly exposed areas of the image carrier still adhering to the same.

The image carrier developed in this way is a vegetative dee originals, because the black support is exposed where the exposed areas of the photosensitive layer are removed from the support will. If in the above procedure a white or light colored one Carrier in combination with a black or colored one light-sensitive layer is used, one holds in Positive of the original, and if you use a transparent or see-through support, you get a template sur making copies by diazotype. Because the photosensitive layer absorbs ultraviolet light and The wearer lets through ultraviolet light, otellt the finished Prepared impression with a very effective diazo template when used an ultraviolet light source.

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A processed image carrier is combined with a greasy one Printing ink used in a printing press to make positive impressions of the original. The aqueous moistening solution the printing press adheres to the exposed hydrophilic carrier on, while the greasy ink on the more oleophilic light-sensitive layer in the unexposed areas of the image carrier adheres. '

B e pi e 1 2

I am more transparent! Rager aue cellulose triacetate is according to the example 1 with a light-sensitive titanium dioxide gelatin layer coated, dipped in SiIbemitratiosung, exposed and physically developed. In addition, the image carrier is immersed in a bleach bath made from 10 ml of concentrated sulfuric acid and 90 ml of water and sown with Kaliumbiehromat » is done. At the exposed areas of the step wedge, i.e. in stages H to 21, as in Example 1, and also in the Levels 11 to 13 is the photosensitive layer of that Carrier removed * So you can in addition to the physical Development use a bleach bath to speed up the detachment of the photosensitive layer from the support or the efficiency of detachment of the photosensitive To increase the layer of the carrier in the exposed areas of the image carrier.

Example 3

You work according to Example 1, except that the image carrier is used not in a .1 normal aqueous silver nitrate solution, but immersed in a 10 ~ * ~ narmal aqueous silver nitrate solution. At the Taking out the physical developer is the whole thing light-sensitive slides on the carrier intact. Then the Image carrier immersed in a water bath. Here, the photosensitive leaf scrolls. Layer in steps 16 I> ie 21 of the step wedge from the -! rager. When you get the carrier before treatment exposed to the sodium nitrate solution, similar results are obtained.

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Example 4

A photosensitive image carrier is produced, exposed and developed according to Example 1, but with the difference that the image carrier is dried after being removed from the physical developer and then brushed off with an ordinary brush to remove the photosensitive layer in steps from 16 to 21 of the step wedge to be removed from the carrier ♦ ^v

The image carrier treated in this way is coated with an oil-based printing ink provided and as a gate position ssur producing positive Copies of the original used. Among other things, the CelluloaaacQtatträgor is more hydrophilic, it draws water from the dampening solution while the gelatin containing the titanium dioxide is more olaophilic and therefore looks at the oil-based printing ink. A second image carrier, produced according to the above process, is coated with a printing ink based on a polar 18 squeegee used to make negative copies of the original. The polar solvent based ink is made from the more hydrophilic cellulose acetate surface attracted by removing the photosensitive layer from the most exposed lugs of the Image carrier has been exposed. An oil based moistening solution is used in connection with a printing ink on the basis of a polaran resolution, inter alia to prevent this this ink adheres to the gelatin-based photosensitive layer.

At s ? ie 1 5

A transparent! Dräger made of cellulose triacetate is produced according to dos Procedure of Example 1 with a photosensitive titanium dioxide gelatin layer coated, immersed in silver nitrate solution, exposed and physically developed.

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The developed image carrier then becomes equal with one Queoksilberlaxape old cold cathode illuminated and attached ait a saturated silver nitrate solution in ethanol and a solution of hydroquinone in methanol (4 g in 100 al) developed The image carrier obtained consists of completely transparent image areas on a black background,

This modification of the method according to the invention is suitable for the production of purple and also for the production of printing forms and printing plates. The presence of metallic silver in the background increases its oleophilic nature for printing purposes. The silver background can be used with other precious metals, especially with metallic copper, using a fiber-optic electroplating process or according to the conventional Verification Process (with the help of a physical developer), s, B. old Iupfer (II) ions and a hedging agent for the same, win Ascorbic acid? * To use all printing plates, the image carriers are reinforced with copper, as this is on most economical and effective.

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Claims (1)

22nd January 1969 Itek Corporation "8-7798 Apply for a godparent 1. Photographiechee method "for the preparation of Beliefbilder *» characterized gekenneeiehnet that "warning to (1) by exposing an image Slower, the · deposited one on Onea carrier 'Onea in a binder lichteopfindlichen material embedded existing photosensitive layer on" has a latent image erodes * (2) the latent image is physically developed until the light-sensitive layer is on the exposed areas have become fragile because they can be selectively removed from these areas, and; (3) the photosensitive layer from the exposed areas ^A len of the image carrier selectively removed. ^>: < - ■ § ■ · ■ 2. The method according to claim 1, characterized in that «an an image carrier is used that adapts to the exposed Physically develop bodies. '* 3. The method according to claim 1 or 2, characterized gekennse4.ohnet, * daes Ean selects the light-sensitive layer and the carrier so ^ 'that they produce different visual effects, so that when removing the light-sensitive layer * from a visible image is created for the wearer. * 5 4 »Method according to claim 1 or 2» characterized in that that there is a photosensitive layer for absorbing activating radiation and one for activating radiation Permeable carrier used. ; - 15 - BATHROOM 909834/1258 »Irtifi 30 5. Method according to claim 1 to 4 »characterized» that all activating radiation is ultraviolet rays used· 6. The method according to claim 1 to 5 »characterized in that that it is carried out with an image carrier on which there are image-reflecting substances at the time of exposure. 7. The method according to claim 1 Ws 6, characterized in that that the selective removal of the photosensitive Layer by washing off »treat ait a bleach bath and / or brushing off. 8. The method naoh claim 1 to 7 »characterized in that that all light-sensitive material uses a silver halide or a photoconductor, which by action activating radiation is activated reversibly, and that the light-sensitive material can be physically developed at the exposed areas. 9 * Method according to claim β, characterized in that nan a metal-containing photoconductor is used as the photoconductor. 10. The method according to claim 9, characterized in that one all metal-containing photoconductors are an inorganic compound of a metal with a non-metallic element of Group VIA of the Periodic Table used. 11. The method according to claim 9, characterized in that one a metal oxide and / or a metal sulfide used as metal-containing photoconductor * 12. The method according to claim 1 to 11, characterized in that that you have the photosensitive material and the binder uses in proportions of about 1 to 50 parts by weight of photosensitive material per part of binder. V. 16 - BATH ORIGINAL 909834/1258 15. The method according to claim 1 to 12, characterized in that that an electrically conductive carrier is used and carries out the physical development electrolytically. H * method according to claim 1 to 12, characterized in that that as a physical developer you have a Bedoxgenic used· 15. The method according to claim H> characterized in that one as a redox mixture. a solution that is at least so easily as the copper (II) ion contains reducible metal ion, and a reducing agent used for this reducible metal lion. 16. The method according to claim 15, characterized in that a solution containing reducible metal ions is used Silver nitrate solution used. 17. The method according to claim 1 to 16, characterized. that titanium dioxide is used as a light-sensitive substance. 18. The method according to claim 1 to 17? characterized, that one is in a process stage of physical development the photographic image bleaches. 19. The method according to claim 18, characterized in that the bleaching is carried out with chemically reactive substances that react selectively with the physically developed image areas of the image carrier. 20. The method according to claim 1 to 19, characterized in that the support and the photosensitive layer are so selects that the support is oleophilic with respect to the photosensitive layer and that the photosensitive layer is in hydrophilic with respect to the support or hydrophilic with respect to the light-sensitive layer and the light-sensitive layer Layer is oieophilic with respect to the carrier, ORIGINAL BATHROOM - 17 - 909834/1258 so that weak receives an ELachdrook plate when »selectively removing a part of the light-sensitive vision. 21. The method according to claim 20, characterized in that on a light-sensitive layer that contains titanium dioxide la gelatin as a binder and uses a carrier, which is more hydrophilic than the light-sensitive layer, 22. The method according to claim 1 or 21, characterized in that that aan exposes the image carrier equally and it bit developed by a physical developer. 23 * The method according to claim 22, characterized in that daes nan uses such as image-eying substances that contain silver ions and a reducing agent for silver ions. 24. Photographic relief image, produced according to the process according to claims 1 to 23. 25. Method for dividing τοη photographical image images, as described. ORIGlMAL BATHROOM - 18 - * 909834/125 8