UST877008I4 - Defensive publication - Google Patents
Defensive publication Download PDFInfo
- Publication number
- UST877008I4 UST877008I4 US877008DH UST877008I4 US T877008 I4 UST877008 I4 US T877008I4 US 877008D H US877008D H US 877008DH US T877008 I4 UST877008 I4 US T877008I4
- Authority
- US
- United States
- Prior art keywords
- defensive publication
- silver halide
- dye
- layer
- dye developer
- 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.)
- Pending
Links
- 229910052709 silver Inorganic materials 0.000 description 6
- 239000004332 silver Substances 0.000 description 6
- -1 silver halide Chemical class 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 4
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- G03F7/07—Silver salts used for diffusion transfer
Definitions
- a lithographic printing plate is provided by processing an exposed photosensitive element comprising at least one light-sensitive silver halide emulsion layer and a dye developer, which is both a silver halide developing agent and a dye, contiguous to the silver halide of the silver halide emulsion layer, with an alkaline solution so as to develop a latent image in the regions of exposure of the silver halide emulsion layer.
- the dye developer is immobilized in the regions of exposure with the remaining dye developer diffusing imagewise in register to a hydrophilic dye developer reception element where it forms thereon an oleophilic image receptive of printing ink.
- the resulting reception element constitutes a positive-working lithographic plate which may then be moistened, inked and placed upon a lithographic printing press to produce up to 1000 positive lithographic prints.
- the reception element can comprise a metal such as aluminum with a hydrophilic coating, :1 fogged silver halide emulsion coated on a paper support or a support coated with a polymericacid layer, a polymeric timing layer and a dye developermordant layer. Washing and heat-treating the lithographic plate will improve the inking characteristics and longevity of the plate.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Printing Plates And Materials Therefor (AREA)
Description
DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 80 cents a sheet.
Defensive Publication applications have not been examined as to the merits of allegedinvention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED AUGUST 18, 1970 877 O.Gr. 490
T877 008 PRODUCTION OF LlTHbGRAPHIC PRINTING PLATES FROM DYE DEVELOPER IMAGES Paul H. Stewart, Eastman Kodak Company, .343 State St., Rochester, N.Y. 14650 Filed Feb. 3, 1970, Ser. No. 8,397 Int. Cl. G03c 5/54; G035 7/02 US. CI. 96-29 No Drawing. 17 Pages Specification A lithographic printing plate is provided by processing an exposed photosensitive element comprising at least one light-sensitive silver halide emulsion layer and a dye developer, which is both a silver halide developing agent and a dye, contiguous to the silver halide of the silver halide emulsion layer, with an alkaline solution so as to develop a latent image in the regions of exposure of the silver halide emulsion layer. The dye developer is immobilized in the regions of exposure with the remaining dye developer diffusing imagewise in register to a hydrophilic dye developer reception element where it forms thereon an oleophilic image receptive of printing ink. The resulting reception element constitutes a positive-working lithographic plate which may then be moistened, inked and placed upon a lithographic printing press to produce up to 1000 positive lithographic prints. The reception element can comprise a metal such as aluminum with a hydrophilic coating, :1 fogged silver halide emulsion coated on a paper support or a support coated with a polymericacid layer, a polymeric timing layer and a dye developermordant layer. Washing and heat-treating the lithographic plate will improve the inking characteristics and longevity of the plate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US839770A | 1970-02-03 | 1970-02-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST877008I4 true UST877008I4 (en) | 1970-08-18 |
Family
ID=21731408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US877008D Pending UST877008I4 (en) | 1970-02-03 | 1970-02-03 | Defensive publication |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST877008I4 (en) |
-
1970
- 1970-02-03 US US877008D patent/UST877008I4/en active Pending
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