DE1797557A1 - Process for making copies - Google Patents

Description

PATENT LAWYERS

DR. E. WIEGAND DIPL-ING. W. NIEMANN DR. M. KÖHLER DIPL-ING. C. GERNHARDT

MÖNCHEN "HAMBURG TELEPHONE: 555 470 8000 MO NCH EN 1 5, TELEGRAMS: KARPATENT NUSSBAUMSTRASSE 10

June 9, 1971

. ho 5W? 1 13 / Loe P 15 71 832.8-45 Tr. A.

Fuji Shashin Movie Kabushiki Kaisha Ashigara-Kamigun, Kanagavia (Japan)

Process for making copies

Retirement from patent .......

(Patent application P 15 71 832.8- ^ 5)

The invention relates to a method for making copies and, more particularly, to an ancestor Ά \\ τ making copies on ordinary papers.

According to the invention a process for the production of copies is provided dan is characterized in that wan AVTF hangs up the r \\ copied original is a light-sensitive material * ri through Ani "bring a coating" of a

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BATH

a photosensitive diazonium salt or a photosensitive azide compound-containing solution on a support is prepared, and exposed to light of a wavelength against which the light-sensitive diazonium salt or the azide compound is sensitive resulting picture surfaces, their adhesion properties are different for the developer used, with a powdery in the normal state hard and non-sticky or adherent material that melts at a temperature in the range of 70 to 170 ° C and can be cooled to form a metastable liquid, developed and used to produce an or partially transfers several copies to ejwn other carriers, where the image obtained is finally developed. ".

That produced by the method according to the invention The copied image is so stable that that of ordinary silver salt copying materials Discoloration and deterioration in quality do not take place. In addition, the transmission can be carried out several tens of times i.e. a considerable number of copies or reproductions can be made from an intermediate material can be obtained. In the method according to the invention, any original can be used, its Form a selective absorption factor against it Possess ultraviolet rays.

In the method according to the invention, the incorporation of some rather special chemicals in a recording sheet no longer required and moreover is the application of a dark sadness and the use;

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of any liquids unnecessary. Thus, the method according to the invention is a dry method. In addition, an inexpensive and simple copying or duplication process is created according to the invention.

The photosensitive material used in the process according to the invention, which is applied to the to be copied Original is placed and which is sometimes also referred to below as intermediate material, is thereby prepared by using a photosensitive diazonium salt or an id-sensitive azide compound in Applying the form of a solution to a carrier and drying the coated carrier. Useful carriers are e.g. natural or synthetic resin films, paper or the like. An aqueous solution is applied to such carrier materials of an isophthalic acid triethylene glycol-ethylene glycol condensate, Polyvinyl butyrals, maleic anhydride-vinyl acetate copolymer or a mixed dispersion of gelatin and a resin or resins or an aqueous solution of gelatin is applied as an auxiliary or intermediate layer, followed by drying. A solution of the is applied to the layer obtained in this way photosensitive diazonium salt or the photosensitive Azide compound applied and dried,

If it is possible, a solution of the diazonium salt or the azide compound on the support directly To apply, the auxiliary or intermediate layer can of course be omitted. In this case came a suitable coating aid for the coating solution Improvement of the coating properties of the solution be admitted.

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Suitable photosensitive diazonium salts according to the. In the invention, include those generally used in conventional diazo papers Salts, for example the diazonium salts of p-phenylenediamine or their

Derivatives, or of p-aminodiphenyloinin, the diazonium salts

a ■ ·

of pI.ionoalkylnilinPjP-tetrazodiphynyl or its derivatives or double salts, sulfates, fluoroborates thereof or the substances used for lithographic printing materials, Z, B, compounds of high molecular weight, which are represented by the following formulas:

V-KH-; > -i

CH ₂

'^ S ₀ ⁺ Cl ^T ZnClp

■ ♦

? ^ll 2 - .. *

CO

NH

R ₂ ⁺ Cl "
ZnCl ₂

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All light-sensitive azide compounds are used according to the invention that for commonly used diazo paper used such as xhenyl azide, itaphthyl azide or kidney Derivatives, preferred.

AIa LöBunrsraittel for applying the Losing will in the case of - ^ iasoniunsalz water and in the case of azido compounds Dimotiiylformanid allcoiaein used. the

Solution of the diazonium calcium or the azide compound can also gelatine or one or more synthetic resins, «As stated above, included.

The 'Präeeroberflilchenseito (^ üokeeite) which is produced in this way on sheet or web-like intermediate material on a LichtdurohlU'seiges odor »-durchcchcinendec Original, that is to be copied, laid and not one «Ellen long, goGonüborvvclcher das Diazoniuiacal» or that Asidqalz is sensitive, exposed by the original, for example using a silver lamp, where the transaction copying process from the rear side, of the original is followed. Otherwise the overdone Oberflüchonseito deo Blatt- or orbahnenföraiinen Z ^ lschennatorlals on a Durchaichtiscs or Lichtdu .'chlösaigec Original celer ^ J, draped over einca duicbslchli-x-n Trrif * r and then rait elrer ^ ueckcilbcrluicpe ni'Ch the ^f

the liopiervorfahrcn vcn / Cbarr.oitc des Orieicnls exposed

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Venn the thus obtained sheet or path forraige Material with a powder developer of the following specified composition developed wiri, results due to a difference in adhesion of the BatX developer compared to the exposed and unexposed parts dee Intermediate material an image of the powder developer. In this case the image of the powder developer is symmetrical or a mirror image of the original

A powder developer that is used to develop the after Exposure of the latent part obtained Picture is suitable consists of a * transferable Material that is hard and not sticky in its normal state and at a temperature in the range from 70 to 170 ° C melts and as the aisle cools to form a metastable fluid tends to "

There are several transferable materials, some of which are described in Belgian patents 631 JQk and 6hk 239. The transferable materials used in the seduction according to the invention are chosen so that they meet the conditions given above, that is, that they are not sticky at the eating temperature, but according to their severity at one Temperature of 70 to 17O ⁰ C become sticky and have a high supercooling capacity * ie * that they

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8AD ORiQ (NAL

in a metastable liquid phase at room temperature remaining for a few or more 10 minutes after melting and cooling. Typical examples for such transferable materials are plasticizers, • in a mixture of o- and p-toluenesulfonamide, plastics of chlorinated diphenylene and polyphenylene, benzotriazole, Tribenzylaain, Vanilin, Phthalophenon, '2,4-Dihydroxybensophenon, Benzyl, Benzoin, Sulfur, Acetanilid, Benzoic acid and phthalic anhydride.

An infrared ray absorbing material can also be incorporated into the powder developer, wherein In this case, an image of the intermediate material can be transferred to a recording sheet by means of infrared heating can.

Al «adsorption material for infrared rays becomes • in finely divided inorganic or organic ·· pigment used, «.B. RuD, Lieenoxyde, Chrora green, ultramarine blue, cobalt blue and indigo

'Bor "orEntWicklung ei no ο exposed üwiccaenaateriale fenfiQ at dea method of Erfindune voi ^v .ven4otoPuiver eni ~ \ 7icUlor" lrd nnch dor nachotohcnd cinseßebcnen Arbeitnwoice standardize ^ ootellt: ELn Ge.vichtctcil Oines übcrtracbaron Ifatcrialo is rrrtindlich with O 0 to ₁ wt I . -Share ©: .nes feinteiJif.cn »iÄEit absorbing infrared rays«! Riale rc 1 and eritz. '.Venn dc üortra ^ baro I * atcrial geisfc, "ird die GGscbia & l / .o" io LiacUung Luo 209844 / 09U

further mixed and cooled to ilorsial stone barrier, lish complete solidification of the molten solution it is pulverized by suitable means and then grained to a grain size of 0.1 to 100 microns in diameter. A mixture of one in common Electrophotography used powder developer (called "Toner") and fine-grained transfer material the method according to the invention as a powder developer for ■ The development of an exposed intermediate material is used will.

After a mirror image of the original has been formed on the intermediate sheet or web using the powder developer described above, the intermediate material is heated by suitable means to raise the temperature to the melting point of the transferable material, followed by cooling to room temperature; In doing so, the powder image of the original is fixed on the blue- or tree-shaped intermediate material. The coated side of the sheet or web-shaped intermediate material treated in this way is placed on a recording sheet or a recording sheet, e.g.

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Paper, fiIa, glass, cloth or the like. laid and heated. That The ritual is carried out while the arrangement is made between place two hot plates or apply infrared radiation. On the other hand, there are the cursors of the visohenaaturial Heated by infrared radiation, whereupon a recording sheet over it ^ t and the ^ nordnunö & epre3t will.

A part of the iiildteileo deo leaf odor Fcahnenförniöen Zwiachenpateriala on a registration sheet or a Aufnahaebahn üortra ^^ n · at Anweniiunr, the Heating by means of infrared rays v / ird dom obertruttuii ^ tjmaterial preferably an infrared ray absorbing material is added.

• On this Veiae., do.o transferable material will be published transfer a recording sheet or an ufn & hnebohn. JJieücs transmitted material with the Unterl-uiiluaoeeifa- · the effect that 'if the pre-development is immediate after the transfer is carried out, the powder developer only on Jon's part due to the weakness or stickiness deo transp ^ burön hateriais adheres, forming a picture.

As a powder developer i'iir di <j -Shtvtcilun ·; oineo Aufnchnif>; l. "ttes Jvnrori some feincc liiivi / r izit an n ^ Qii · - ϊ. · κ., uia nn einua

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Adhesive to use gelfinijen. Suitable powder developer orden in general by dispersing in a plastic resin, z. B. a rhenox-rorMldahyä ^ resin of a molten mixture of chlorinated naphthalene and polystyrene or a licchpolyaerieat von .vinylcalorid and vinyl acetate, a carbon-containing material, such as carbon black or asphalt powder, an anovgünischen titanium dioxide pigment, such as zinc, carbon dioxide , Antimony trioxide, jipenoxyde, cadmium sulfide, basic chromate, kolybean orange, cadmium yellow, chrome green, ultramarine blue, or an organic pimento, such as bensidine yellow, indigo, and alizarin, and granulation or granulation of the dispersion produced in this way with a suitable process to Kc'morn Manufactured from 0.1 to 50 hectoliters. A toner used for customary electrophotography succeeds in the method according to the invention. The color of such ^a n ''. Vic lor should be adjusted in accordance with the color of the recording material.

Powder developers whose ObardPlftohe has been treated with a surface active agent can be used in the ¹ method according to the invention.

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_ 11 _

When the material is heated after the development or with the vapor of an organic solvent such as trichlorethylene _t. Freon, acetone, chloroform or benzene can be treated with a visible opaque image that is not influenced by light and moisture and can be stored for a long time.

The transfer of a transferable material to a sheet or web-shaped recording material from a sheet or sheet intermediate material can be some ten times be repeated·

The invention is explained in more detail below with the aid of examples

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ßAD OBIGlNAU

example 1

A ^ percent ethyl alcohol solution of polyvinyl butyral was applied to a polyester film base and dried «A 2 percent aqueous solution of The condensation product of formalin and the zinc chloride double salt clay was diazotized p-aminodiphenylamine applied thereon to a coating in a thickness

of 70 ml per m, whereupon the formation of the sheet or web or some intermediate material dried became.

The carrier surface side of the intermediate material thus produced was placed on a transparent original to be copied and exposed from the reverse side of the original by means of a mercury lamp using the transmission copying method. In addition, the surface side of the intermediate material provided with the coating was placed on the transparent original and turned over against a ti-transparent carrier and then exposed from the top of the original using a mercury lamp using the transmission copying process Powder developer described carried out, whereupon irradiated with infrared light and the image was fixed to form an intermediate image.

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BA ORIGIN

The above powder developer for developing the intermediate material was prepared by mixing 20 g of powdery benzotriazole and 1 g of carbon black and ^{heating to about 100 °} C. to melt the mixture. The molten mixture was stirred and mixed thoroughly while molten, cooled to room temperature and, when solidified, granulated to a size of "7h microns or less.

The thus developed intermediate image of the intermediate material e.in A was placed _u fnahmeblatt then, and heating was carried out using a heater or an infrared radiation from the back of Zwi3chenmaterials forth to a portion to melt the transfer material and this part to the receiver sheet transferred to. The Aufnahjneblatt was then subjected to a powder development using a toner for Xerox 914 Office Copier (Fujifilm ^x erox Co., Ltd.), Followed by fixed in Trichloräthyiendampf. About 30 sheets of prints or copies were obtained. '

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Example 2

A 2 percent aqueous solution of sodium < 2, i-diazonaphthol-5-sulfonate was applied to a polyester film support to form a coating having a thickness of 30 ml / m and dried to obtain an interleaf sheet or an interleaf sheet.

The interleaf placed on an original was exposed and developed as described above. For the development of the intermediate sheet, a powder developer was used, which was prepared by mixing 20 g of a powdered plasticizer on the basis of a mixture of o- and p-toluene sulfonamide, and 1 g of carbon black were mixed and were heated at 11O ⁰ C to melt the mixture, the molten mixture was stirred and mixed in the molten state, after which, after cooling to room temperature and solidifying, the material was granulated or granulated to a size below Jk microns. After the powder development, infrared light was irradiated and the image was fixed to form an intermediate image.

The transfer of the intermediate image to a recording sheet, development and fixing were carried out in a manner similar to that in Example 1 above specified.

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Claims (1)

Claim Process for the production of Kcpien, characterized in, that you put on the original to be copied, a photosensitive material, which by applying a Coating of one containing a photosensitive azide salt or a photosensitive azide compound Solution is prepared on a support, and exposed to light of a wavelength compared to which the light-sensitive Diazonium salt or the azide compound is sensitive to the resulting. Image areas, their adhesion properties for the developer used are different, with a powder-form in the normal state hard and non-sticky or sticky material, the melts at a temperature in the range from 70 to 170C and can be cooled to form a metastable liquid, developed and used to produce an or several copies are partially transferred to a further support, where the image obtained is finally final is being developed. 209844/0914 6 * 0