UST881006I4 - Defensive publication - Google Patents
Defensive publication Download PDFInfo
- Publication number
- UST881006I4 UST881006I4 US881006DH UST881006I4 US T881006 I4 UST881006 I4 US T881006I4 US 881006D H US881006D H US 881006DH US T881006 I4 UST881006 I4 US T881006I4
- Authority
- US
- United States
- Prior art keywords
- defensive publication
- silver
- iodine
- bleach
- defensive
- 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
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 5
- 229910052740 iodine Inorganic materials 0.000 description 5
- 239000011630 iodine Substances 0.000 description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 4
- 239000007844 bleaching agent Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- YAGKRVSRTSUGEY-UHFFFAOYSA-N ferricyanide Chemical compound [Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] YAGKRVSRTSUGEY-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 silver halide Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/42—Bleach-fixing or agents therefor ; Desilvering processes
- G03C7/421—Additives other than bleaching or fixing agents
Definitions
- the iodine-containing bleach solutions are particularly useful in reversal color processes in which a first silver bleach solution, such as ferricyanide solution, is used followed by hypo to remove most of the silver followed by the iodine containing bleach to eiiect removal of traces of silver remaining in the layers.
- a first silver bleach solution such as ferricyanide solution
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution 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 0.6. 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 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits or alleged invention. The Patent Oiiice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED DECEMBER 1, 1970 T881,006 IODINE BLEACH FOR COLOR FILM PROCESSING Charleton C. Bard, 74 Cornwall Lane, Rochester, NY. 14617 Filed May 8, 1970, Ser. No. 35,910 Int. Cl. G03c 5/32 US. Cl. 96-60 No Drawing. 6 Pages Specification Silver images in photographic emulsion layers are bleached with an aqueous solution of iodine and pyrrolidinone or of iodine and polyvinyl pyrrolidinone to render the silver removable with silver halide solvent. The iodine-containing bleach solutions are particularly useful in reversal color processes in which a first silver bleach solution, such as ferricyanide solution, is used followed by hypo to remove most of the silver followed by the iodine containing bleach to eiiect removal of traces of silver remaining in the layers.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3591070A | 1970-05-08 | 1970-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST881006I4 true UST881006I4 (en) | 1970-12-01 |
Family
ID=21885501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US881006D Pending UST881006I4 (en) | 1970-05-08 | 1970-05-08 | Defensive publication |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | UST881006I4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4138257A (en) | 1976-05-04 | 1979-02-06 | Konishiroku Photo Industry Co., Ltd. | Process for the treatment of photographic materials |
-
1970
- 1970-05-08 US US881006D patent/UST881006I4/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4138257A (en) | 1976-05-04 | 1979-02-06 | Konishiroku Photo Industry Co., Ltd. | Process for the treatment of photographic materials |
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