US3585037A - Light sensitive element for preparing etching resist for gravure purposes - Google Patents

Light sensitive element for preparing etching resist for gravure purposes Download PDF

Info

Publication number
US3585037A
US3585037A US707131A US3585037DA US3585037A US 3585037 A US3585037 A US 3585037A US 707131 A US707131 A US 707131A US 3585037D A US3585037D A US 3585037DA US 3585037 A US3585037 A US 3585037A
Authority
US
United States
Prior art keywords
layer
emulsion
water
stripping
latex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US707131A
Other languages
English (en)
Inventor
Daniel J Gallois
Claude L E Guestaux
Monique L Lauverjat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of US3585037A publication Critical patent/US3585037A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/06—Silver salts

Definitions

  • This invention relates to light sensitive elements for use in preparing etching resists for gravure purposes. In one embodiment, it concerns the incorporation in resinous binding layers of water soluble compounds.
  • the photosensitive product consists of a customary film support such as of cellulose acetate, polystyrene or polyethylene terephthalate overcoated with layers in the following order: (1) a subbing layer if desired, (2) a water impermeable layer comprising a polymer of a synthetic resin, this layer being-coated from a solution (varnish) or from a suspension, (3) a stripping layer formed from a hydrosol of an acrylic copolymer as for example a mixture of gelatin with a copolymer of ethyl acrylate and acrylonitrile, (4) an antihalation layer composed of a gelatin layer containing a dye or Carey Lea silver, (5) an unhardened gelatin silver halide emulsion layer and possibly (6) an antiabrasion layer.
  • a customary film support such as of cellulose acetate, polystyrene or polyethylene terephthalate overcoated with layers in the following order: (1) a subbing layer if desired,
  • the'product is applied onto the moist surface of a gravure cylinder.
  • the emulsion layer is placed in contact with the cylinder.
  • the film support is carefully stripped'fr'om the cylinder permitting the emulsion to adhere to the cylinder following which the emulsion is washed in 35 to 50 C. Water to remove the nontanned areas and to eliminate substances which might remain on the emulsion layer'following' the stripping.
  • the light sensitive element described in the aforesaid application yields excellent results and constitutes an improvement over conventional light sensitive elements which elements required cold water to permit stripping of the film support and required special care to prevent the formation of blisters on the emulsion layer.
  • Novel light sensitive elements comprise layers of synthetic resins that may be readily removed from the silver halide emulsion layer after Wet transfer and stripping of the film support, by simple treatment with water, alone, at a temperature of 35 to 40 C. without the necessity for an organic solvent.
  • a compound, such as hydroquinone, which is soluble in conventional processing baths is incorporated into the organic solution of the resin which is to constitute the temporary binding layer or varnish layer of the gravure transfer film.
  • This modified varnish results in a resin layer which may be easily removed from the silver emulsion layer after wet transfer and stripping, merely by treatment with water at a temperature of 35 to 40 C.
  • the photosensitive product of this aspect of the invention thus comprises, broadly, a gravure resist film comprising a dimensionally stable, temporary, possible subbed film support containing thereon in the following order: 1) a temporary binding varnish layer composed of an organic solvent soluble synthetic resin and a compound soluble in processing baths, (2) a layer formed from 10 to 15 parts of gelatin and from to parts (dry weight) of a lower alkyl acrylate copolymer and containing a surface active agent, in which the alkyl acrylate moieties constitute from about 60% to about 90% of the Whole weight of the polymer, hereafter called hydrosol layer (3) an antihalation layer, (4) a light sensitive gelatin silver halide photographic emulsion and if desired (5) an antiabrasion layer, all these gelatin containing layers being free from hardener agents.
  • a temporary binding varnish layer composed of an organic solvent soluble synthetic resin and a compound soluble in processing baths
  • the temporary binding layer may comprise a modified latex layer formed from an aqueous dispersion of a synthetic resin which is insoluble and dispersible in water and which contains a directly water soluble compound or a water soluble compound after processing in an alkaline bath, or a water swellable compound such as casein.
  • a compound will be hereafter called water sensitive compound.
  • Such a layer will be hereafter called latex layer.”
  • the inclusion of the water sensitive compound permits the removal of the latex layer from the photosensitive emulsion, after stripping of the temporary support, by merely treating with water at a temperature of 35 to 40 C.
  • the modified latex layer may be employed as the sole resinous stripping layer between the support and the photosensitive emulsion and the hydrosol layer may be dispensed "with, if desired.
  • the modified latex layer is applied from an aqueous suspension of a polymer of a synthetic resin rather than from an organic solution, as is the case of the temporary binding layer previously described. This method of application gives added safety to the manufacturing operation, since it avoFls the use of solvents that are volatile and infiam mable.
  • the film of the modified latex aspect of the invention comprises, broadly, a dimensionally stable, temporary, possibly subbed film support containing thereon in the following order: (1) a temporary binding layer formed from a latex of a synthetic resin which contains a water sensitive compound, (2) an antihalation layer, (3) a light sensitive gelatin silver halide photographic emulsion and if desired (4) an antiabrasion layer, all these gelatin containing layers being free from hardener agents.
  • the film support (possibly subbed) of this modification may be easily stripped from the latex coating without the formation of blisters in the emulsion layer, and residues of the modified latex layer may be easily removed from the emulsion by contact with water at a temperature of from 35 to 40 C.
  • FIG. 1 represents a greatly enlarged cross section of a product in accordance with a preferred embodiment of the invention.
  • FIG. 2 represents in similar fashion a cross section of a photographic product according to a preferred modification of the invention.
  • FIG. 1 illustrates a product comprising an anticurling layer backing 1 and a subbing layer 2 for the support 3 which carries successively and in a superimposed relationship a subbing layer 4 a varnish layer 5, a hydrosol layer 6, an antihalation layer 7, a silver emulsion layer 8 and an antiabarasion layer 9.
  • FIG. 2 illustrates a photographic product of the modified structure of this invention in that the latex layer 10 containing a water sensitive compound is placed between the subbing layer 4 and the antihalation layer 7.
  • the support may have a thickness of about 100 microns, the antihalation layer a thickness of about 5 microns, the emulsion layer a thickness of about to microns, the antiabrasion layer and the subbing layers a thickness of about one micron and the varnish layer 5, synthetic resin layer 6 and latex layer 10, a thickness of 2 to 5 microns. It is apparent that some latitude should be allowed in the compounding of these various layers to form the products described.
  • the modified varnish layer 5 of FIG. 1 is produced by incorporating compounds which are soluble in the processing baths, in an organic solution of the polymer which is to constitute the binding layer.
  • Such compounds include hydroquinone, acrylamide, etc.
  • Organic solvent soluble synthetic resins which are suitable for employment in the varnish layer include polyisobutyl methacrylate, polyvinyl butyral, polyvinyl chlorideacetate, polycondensation products of bisphenol and maleic or fumaric anhydride, polyvinylidene chloride and acrylonitrile copolymers and the like.
  • the amount of the soluble compound, e.g. hydroquinone, that is employed in the varnish layer may vary over a wide range. Good results are obtainable with the soluble compounds in amounts of between about 20 and about 200% by weight of the organic solvent soluble polymer.
  • the hydrosol layer 6 of FIG. 1 may comprise a mixture of gelatin and a surfactant-containing lower alkyl acrylate copolymer hydrosol such as that contained in the product of French Pat. No. 1,282,219, the disclosure of which is hereby incorporated by reference.
  • the polymer of the hydrosol may comprise the product resulting from the emulsion polymerization of a mixture of 60 to 90% ethylacrylate and 40 to 10% acrylonitrile.
  • composition of the hydrosol layer may vary in the ratio of copolymer to gelatin between 90:10 and 85:15, based on solids weight, preferably being approximately 87:13.
  • the dry coverage of this layer may be from 0.1 to 1.0 gram of solids per square foot with the preferred level at 0.3 to 0.4 gram per square foot.
  • This composition also contains a surfactant present as a result of the emulsion polymerization to prepare the hydrosol.
  • the surface active agent is an anionic wetting agent having a long hydrophobic chain such as alkyl or aralkyl, etc. terminating in a sulfate or sulfonate group and optionally having intermediate polyethoxy, amide or other hydrophilic groups, such as:
  • a cationic surface active agent useful for facilitating stripping is dioctadecyldimethyl-ammonium chloride, especially of commercial or technical grade.
  • the working limits of the surface active agent is from 1 to 5% by weight of the dry monomeric material in the preparation of the hydrosols, preferably from 2 to 4%.
  • the modified latex layer 10 of FIG. 2 is produced by incorporating a water sensitive compound in an aqueous dispersion of a synthetic resin such as styrene-butadiene resins, vinylidene chloride-acrylonitrile and ethyl acrylateacrylonitrile copolymers; modified polyvinyl chloride, the terpolymers of methyl methacrylate, vinyl chloride and vinyl isobutyl ether; polyacrylonitrile, styrene polymers plasticized with butyl phthalate, and the like.
  • a synthetic resin such as styrene-butadiene resins, vinylidene chloride-acrylonitrile and ethyl acrylateacrylonitrile copolymers
  • modified polyvinyl chloride the terpolymers of methyl methacrylate, vinyl chloride and vinyl isobutyl ether
  • a water sensitive compound modifies the properties of the latex so that the film is readily strippable and the latex layer may be easily removed from the silver emulsion by treatment with water at a temperature of 35 to 40 C.
  • water sensitive compounds include casein, polymeric materials, such as terpolymers comprising butyl acrylate, styrene and methacrylamide, copolymers comprising vinyl acetate, or compounds such as hydroquinone, acrylamide, or compounds which are water soluble after treatment in alkaline baths, such as cellulose acetate phthalate, etc.
  • Suitable amounts of the water sensitive compounds include from about 2 to about by weight of the solid portion of the latex.
  • casein into the aqueous polymeric dispersion, which constitutes a preferred embodiment, renders the resulting latex layer porous upon wet transfer of the film to the copper cylinder.
  • the latex residue that remains after stripping may be easily removed from the silver emulsion layer with water at 35 to 40 C.
  • the principal reason for incorporating the casein into the latex layer is to avoid the undesirable anchoring of the latex layer to the photosensitive emulsion layer and to the metal parts of the coating apparatus and to permit its easy removal with warm water.
  • the presence of casein in the latex layer additionally increases the ease of stripping the temporary support from the photosensitive emulsion.
  • the stripping readiness of the casein containing latex coating may be further enhanced by incorporating therein a polymer which is both saponifiable, and compatible with the latex.
  • a polymer which is both saponifiable, and compatible with the latex.
  • Such polymeric materials include cellulose acetophthalate, copolymers of vinylmethylether and maleic anhydride, modified esters of pentaerythrite and colophony, copolymers of styrene and maleic anhydride, and the like.
  • the saponifiable polymers may be employed in amounts of from about 2 to about 50% by weight of the solid portion of the latex.
  • the support for the photosensitive product may be any film support customarily used which has good dimensional stability, such as cellulose acetate, cellulose acetate bu tyrate, polystyrene, poly(ethylene glycol terephthalate) and the like, wherein the thickness usually runs from 0.065 to 0.325 mm. In case of polyester supports even thinner sheets may be used. Before applying the various layers to a support, it may be desirable to treat the surface of the support with trichloroacetic acid prior to coating with the various layers which facilitates the adherence of the layers thereto.
  • the polyester support layer may, if desired, have a subbing layer such as a terpolymer of vinylidene chloride, methyl acrylate and itaconic acid, such as disclosed in US. Pat. 3,282,643, cellulose nitrate, etc. This subbing layer overcoated with a thin layer of gelatin is preferred.
  • the antihalation layer comprises a layer of gelatin con: taining an antihalation dye, such as a yellow Carey Lea silver colloidal dispersion or a manganese dioxide dispersion.
  • an antihalation dye such as a yellow Carey Lea silver colloidal dispersion or a manganese dioxide dispersion.
  • the use of a yellow Carey Lea silver dispersion is preferred at the coverage of 0.7 to 0.8 gram per square foot, dry weight.
  • antihalation dyes which may be used in lieu thereof in the antihalation layer include:
  • the antiabrasion layer that may be employed for the protection of the photosensitive emulsion layer may be of an usual type.
  • a suitable antiabrasion layer is made from a mixture containing, for example, 22 parts of starch and 100 parts of gelatin. Such an antiabrasion layer is applied at a gelatin coverage of 93 mg. per square foot.
  • An anticurl layer may be utilized as a backing for the photosensitive element of this invention, and such layer may be of a composition similar to the antihalation layer described above. This layer prevents the curling of the support due to the photosensitive emulsion on the opposite side thereof.
  • the anticurl layer may be a conventional gelatin pelloid containing either dyes or manganese dioxide.
  • Other suitable anticurl layers include a nitrocellulose lacquer, an alkyd resin coating or a lacquer including both nitrocellulose and alkyd resin. These coatings may be applied from a suitable solvent.
  • Suitable anticurl layers include an unhardened gelatin layer (thus avoiding the contamination of emulsion layers) containing a compound capable of oxidizing the hardening developer used in the developing step (for example, pyrogallol), said compound being such as, for example, cupric ferrocyanide, mercuric iodide, lead iodate, methylene blue, etc.
  • the anticurl layer is preferably of the same thickness as the light sensitive emulsion layer.
  • the various layers forming the photosensitive element of this invention including the varnish layer may be applied to the support which has a subbing layer, covered with a thin layer of gelatin, by one of the well known techniques such as hopper, scraper, bead coating, transfer by immersed rollers or any of the other procedures well known in the art for the application of layers in preparing photographic products.
  • the varnish layer Upon drying of the varnish layer, the hydrosol and antihalation layers are coated,
  • the silver emulsion layer and the antiabrasion layer are applied over the antihalation layer in a separate run.
  • the layers are applied in the order mentioned.- 1 p
  • the same general procedure is employed in producing the resist film of this invention which includes the latex layer that contains a water sensitive compound.
  • the latex layer is applied to a subbed support simultaneously 'with a layer'of unhardened gelatin which may contain an antihalation dye-Then, in a subsequentrun the silver emulsion and antiabras'ive' layer are simultaneously coated onto the antihalation layerQThe various layers are applied in the order mentioned.
  • the film of this invention may he used in any of several gravure processes.
  • the element in accordance with the invention may be subjected to short exposure while in elfective contact with an image or any other type of element, such as the image modulated light beam from a photoelectric scanning devicewhich will impart a latent image to the silverhalide emulsion, as is well known in the photographic art.
  • a suitable method for processing the film is by a series of steps as follows: (1) The element is bathed at 68 F. for 2 minutes in a developing solution consisting of:
  • the film After exposure and development, the film is applied to the moist surface of a gravure cylinder with the emulsion surface (or the antiabrasion layer it one is employed) being in contact with the copper cylinder.
  • the nontanned gelatin along with any resinous material which is a residue of the resinous binding layers is easily removed by merely treating with water at 35 to 40 C.
  • the formation of the etched surface on the copper cylinder may be accomplished in any conventional manner.
  • the copper cylinder containing the relief image may be etched as follows: some sort of protection such as asphaltum may be applied to the areas of the copper which are unprotected by the image and are not to be etched.
  • the copper may be then subjected to an etching operation such, for example, as with ferric chloride.
  • the copper surface is thereby differentially etched inversely to the thickness and hardness of the gelatin which resides on the surface of the copper.
  • EXAMPLE 1 Thirty grams of a resin comprising polyvinyl acetate chloride modified by treating with maleic acid are dissolved in a solvent composed of 940 grams of acetone. To the varnish solution is added grams of hydroquinone. This solution is then coated onto an Estar [trademark for poly(ethylene glycol terephthalate)] support of 0.10 mm. thickness having a subbing layer composed of a terpolymer comprising 83% by weight vinylidene chloride, 15% by weight methylene acrylate and 2% by weight itaconic acid. The coating has a thickness of 2 to 3 microns upon drying. Gelatin is applied over this layer in an amount of 40 mg. per square decimeter resulting in a gelatin layer having a thickness after drying of approximately 5 microns.
  • a layer of a hydrosol comprising a dispersion of 453 grams of gelatin in 7200 grams of a latex having about 40% solids content and comprising a copolymer of ethyl acrylate and acrylonitrile, an antihalation layer of gelatin containing a Carey Lea silver dispersion, a gelatin silver halide emulsion layer and an antiabrasion layer.
  • the dry thickness of the hydrosol coating is 2 to 3 microns.
  • the resulting film is then submitted to the operations of exposure, hardening development and transfer onto a wet copper cylinder.
  • the stripping force of a one centimeter wide bit of the unexposed and dry material and of the material developed at the time of stripping after 1 wet transfer emulsion side onto the copper cylinder are measured with a dynamometer at an angle of 45.
  • the presence or absence of blisters resulting from stripping on the emulsion is also evaluated by a practical test on a larger sheet of film.
  • the stripping force of the dry unexposed material and of the material developed at the time of stripping, i.e. after wet transfer is about 200 grams and grams respectively. No formation of blisters is observed after the support has been stripped off.
  • the nontanned gelatin of the emulsion layer is removed by washing with water at a temperature of to C.
  • the residues of the varnish and polymer layers are simultaneously removed by this simple water wash treatment.
  • the gravure cylinder is now ready for etching.
  • EXAMPLE 2 Forty grams of polyvinyl acetate chloride modified by treating with maleic acid are dissolved in a solvent composed of 920 grams of acetone. In addition, 40 grams of acrylamide are added to the solution. The solution is then coated onto a subbed Estar film base to give a coating having a thickness of 3 to 4 microns upon drying. The hydrosol layer, antihalation layer, gelatin silver 8 halide emulsion layer and antiabrasion layer are applied in succession as in Example 1. The resultant product is then applied to a copper cylinder in the same manner as described in Example 1.
  • the dry stripping forces and those after wet transfer are determined and found to be about grams and 25 grams respectively. No blisters are noticeable on the silver emulsion after stripping,
  • the removal of the varnish and resin layers from the emulsion layer is easily effected by spraying with Water at a temperature of 35 to 40 C.
  • EXAMPLE 3 Five hundred grams of an anionic aqueous dispersion having a pH of 7.5 and composed of a styrene polymer plasticized with butyl phthalate and which is comprised of 47% by weight dry material are mixed with 495 grams of water.
  • the aqueous dispersion is commercially available under the trade name Vinacryl 4000 from Vinyl Products Ltd. Five grams of casein are added to the latex.
  • the modified later layer is applied to a subbed Estar support and an antihalation layer of gelatin containing Carey Lea silver dispersion, a gelatin silver halide emulsion layer and an antiabrasion layer are successively coated onto the modified latex layer in the manner of Example 1.
  • the product is then applied to a copper cylinder in the manner described previously, and the film support is stripped from the emulsion layer upon the copper cylinder.
  • the dry stripping forces and those upon wet transfer are about 50 grams and about 10 grams respectively. No blisters are formed on the emulsion after stripping.
  • the modified latex coating is easily removed from the emulsion by merely sprinkling with water at a temperature of 40 C.
  • EXAMPLE 4 For comparative purposes, the procedure of Example 3 is repeated, however, the amount of casein employed in the latex layer is increased to 37.5 grams.
  • EXAMPLE 5 Five hundred grams of Vinacryl 4000 and 7.5 grams of casein are mixed with 487.5 grams of water. Additionally, 5 grams of cellulose acetophthalate, a saponifiable polymer containing 25% by weight phthaloyl are incorporated into the mixture. The resulting latex layer is coated onto a subbed support and formed into a film as in the previous examples. The resulting film is exposed and applied to a copper cylinder by wet transfer of the emulsion side onto the cylinder.
  • Example 5 The dry and Wet stripping forces are identical with those obtained in Example 5. Likewise, no blisters are formed on the emulsion upon stripping. Here again, 40 C. water easily removes the latex coating.
  • EXAMPLE 7 The procedure of Example 5 is repeated, however, a copolymer composed of vinylmethylether and maleic anhydride, a modified ester of pentaerythrite and colophony, and a copolymer of styrene and maleic anhydride which are saponifiable polymers compatible with the latex, are substituted for cellulose acetophthalate.
  • EXAMPLE 8 Using the same procedure as before, a subbed Estar film base is coated with an aqueous dispersion comprising 250 grams of a copolymer of styrene and butadiene in a dispersion comprising 47% by weight solids, 500 grams of a terpolymer composed of butyl acrylate, styrene and methacrylamide as an aqueous dispersion composed of 25% by weight solids and 250 grams of water.
  • the dry adhesion forces and those upon wet transfer are 150 grams and to 20 grams, respectively. No stripping blisters are formed on the emulsion and the latex coating is easily removed by washing with water at a temperature of 40 C.
  • Example 9 The procedure of Example 8 is repeated employing an aqueous dispersion containing 500 grams of Vinacryl 4000, 250 grams of a vinyl acetate copolymer, 7.5 grams of casein and 252.5 grams of water.
  • the dry stripping forces and those upon wet transfer are about 50 grams and about 10 grams, respectively. As expected, no stripping blisters are formed on the emulsion.
  • the latex layer is easily removed from the emulsion by merely washing with water at a temperature of 40 C.
  • a gravure resist film comprising dimensionally stable, temporary, film support containing thereon -(l) a varnish layer composed of an organic solvent soluble synthetic resin and about 20 to about 200 percent by weight of said resin of a compound soluble in aqueous photographic processing baths,
  • varnish layer comprises maleic acid modified polyvinylacetate chloride and hydroquinone.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
US707131A 1967-11-13 1968-02-21 Light sensitive element for preparing etching resist for gravure purposes Expired - Lifetime US3585037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR127848 1967-11-13

Publications (1)

Publication Number Publication Date
US3585037A true US3585037A (en) 1971-06-15

Family

ID=8641573

Family Applications (1)

Application Number Title Priority Date Filing Date
US707131A Expired - Lifetime US3585037A (en) 1967-11-13 1968-02-21 Light sensitive element for preparing etching resist for gravure purposes

Country Status (3)

Country Link
US (1) US3585037A (enrdf_load_stackoverflow)
FR (1) FR1571284A (enrdf_load_stackoverflow)
GB (1) GB1251999A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861942A (en) * 1971-10-13 1975-01-21 Eastman Kodak Co Process for making flat photographic film product
US10665819B1 (en) * 2018-11-07 2020-05-26 Beijing Boe Display Technology Co., Ltd. Moisture conveying layer, display panel, display apparatus, method of manufacturing moisture conveying layer, and method of manufacturing display panel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3861942A (en) * 1971-10-13 1975-01-21 Eastman Kodak Co Process for making flat photographic film product
US10665819B1 (en) * 2018-11-07 2020-05-26 Beijing Boe Display Technology Co., Ltd. Moisture conveying layer, display panel, display apparatus, method of manufacturing moisture conveying layer, and method of manufacturing display panel

Also Published As

Publication number Publication date
FR1571284A (enrdf_load_stackoverflow) 1969-06-20
GB1251999A (enrdf_load_stackoverflow) 1971-11-03

Similar Documents

Publication Publication Date Title
US2604388A (en) Photosensitive coating
JPH0411852B2 (enrdf_load_stackoverflow)
JPH04501324A (ja) 帯電防止層及びバリヤー層からなる写真支持体材料
US3600166A (en) Lithographic plate and process of making
US3043695A (en) Photographic films
US3148064A (en) Light sensitive photographic composition containing aluminum stearate as a translucent pigment
US3877939A (en) Photopolymer printing plates and coated relief printing plates
US3060022A (en) Image transfer process
US3589905A (en) Inking properties of matte-surfaced polyester sheeting
US3585037A (en) Light sensitive element for preparing etching resist for gravure purposes
US3148063A (en) Light-sensitive element for preparing etching resist for gravure purposes
US3518087A (en) Gravure etch resist film
US4076531A (en) Image anchorage in photographic films
US3369903A (en) Light sensitive element for preparing etching resist for gravure purposes
US3568597A (en) Lithographic printing plate and process
US3057722A (en) Photographic stripping film
US3307950A (en) Stripping films
US5318874A (en) O-naphthoquinone diazide photosensitive coating composition containing a polyvinyl pyrrolidone compound and a stannic halide
US3573907A (en) Process for making etching resists and photographic stripping film for use in such process
US3492121A (en) Gravure etch resist film
US4891308A (en) Photographic film antistatic backing layer with auxiliary layer having improved properties
US4940655A (en) Photographic antistatic element having a backing layer with improved adhesion and antistatic properties
US3282698A (en) Photographic stripping films
US2976147A (en) Photographic stripping film
US2993790A (en) Processes for making resists