US2377325A - Treatment of nongelatin emulsions - Google Patents
Treatment of nongelatin emulsions Download PDFInfo
- Publication number
- US2377325A US2377325A US462232A US46223242A US2377325A US 2377325 A US2377325 A US 2377325A US 462232 A US462232 A US 462232A US 46223242 A US46223242 A US 46223242A US 2377325 A US2377325 A US 2377325A
- Authority
- US
- United States
- Prior art keywords
- treatment
- emulsions
- photographic element
- opalescence
- polyvinyl
- 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
Links
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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/268—Processing baths not provided for elsewhere, e.g. pre-treatment, stop, intermediate or rinse baths
Definitions
- This invention relates to improved photographic procedure for the treatment of nongelatin photographic elements, and in particular to procedure for removing opalescence from photographic elements bearing a non-gelatin layer.
- This invention has for-its object to'provide H procedure for removing this opalescence.
- the photographicelement be treated with the substances mentioned imdried.
- Our invention is applicable to the treatment of non-gelatin emulsions in general. However, it is 01 particular value in connection with the 2 treatment of emulsions containing a cellulose ester carrier containing between about 26 and 33% acyl and of polyvinyl resins, particularly polyvinyl acetal resins.
- Example A film carrying an emulsion of silver halide in a cellulose acetate-propionate carrier 22.5%
- the method or removing opalescence iro a photographic'element which comprises treating the opalescent ;.hotographic element bearing a non-gelatin layer containing a developed and mediately alter such as immediately alter develop z, fixing and/or washing. 0n the other hand much the same-results can be obtained if the photographic element is maintained in a wet condition after the processing treatment and is treatedto remove the opalescence at any subsequent time. It ha been found that it the photographic element is first permitted to dry the coalescent quality is more dimcult to remove. However. it is to be understood that our invenopalescence in; a photographic element which Q silver image with a solution or a member ,0! the group consisting of ethylenediamine, ethav nolamine, triethanolamine and alcohol.
- the method of preventing or removing comprises treating the photographic element bearing a non-gelatin layer containing a silver image with a solution containing a member 01' the group consisting of ethylenediamine, ethanolamine, triethanolamine and alcohol.
- the method of preventing or removing .opalescence in a photographic element which comprises treating the photographic element bearing a polyvinyl acetal layer containing a developed and fixed silver image with asolution containing a member of the group consisting of ethylenediamine, ethanolamine, trlethanolamine and alcohol.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Description
aiented June 194 5 John I. Crabtree and Geo N. Y., assignors to" Rochester, N. Y.,
No Drawing.
rge 'lJEaton, Roehester, Eastman Kodak Co a corporation or New Jersey Application October 16, 1942,
Serial No. 462,232 6 Claims. (CI. 95-88) This invention relates to improved photographic procedure for the treatment of nongelatin photographic elements, and in particular to procedure for removing opalescence from photographic elements bearing a non-gelatin layer.
Various resin products which act as protective colloids or carriers have been proposed as a substitute for gelatin in photographic emulslons. Thus, resins such as cellulose nitrate, acetate, acetate-butyrate; polyvinyl acetals such as polyvinyl-acetaldehyde acetal and polyvinyl butyraldehyde acetal; cold water soluble polyvinyl acetaldehyde acetal: polyvinyl alcohol; and polyvinyl esters such as h'ydrolized vinyl acetate, have been used for this purpose. These substitutes are superior to gelatin in many respects, but it has been noted that with certain developing and fixing solutions or with certain forms of these'gelatin substitutes a photographic element. is obtained which isopalescent. The opalescence is apparently caused by the process- 5 supplemental bath just prior to washing.
We prefer to utilize the opalescent removing agents in aqueous solution in the following proportions:
Per cent solution Ethylenediamine 1 to 60 Ethanolamine 1 to 25 Triethanolamine 1 to 20 Alcohol 1 to 70 However, these proportions can be varied considerably and it is to be understood that our invention is not limited thereto. After treatment with the opalescent removing agent the photographic element is permitted to dry or is preferably first washed with water and then log baths and is produced when the element comes in contact with the wash water. The element remains opalescent to a lesser degree when dry. g
This invention has for-its object to'provide H procedure for removing this opalescence. An-
other object is to provide procedure for removingthe opalescence from processed non-gelatin emulsions. Other objects will appear hereai'ter. These and other objects are accomplished by our invention which includes preventing or removing opa escence by treating the photographic element bearing a non-gelatin layer with a solution containinga member of the group consisting of ethylenediamines. ethanolamine, trietlranolamine and alcohol. In-the following examples and description we have given several of the preferred embodiments of our invention,- but it is to be understood that these are set forth for the purpou or illustration and not in limitation thereof.
It is preferred that the photographicelement be treated with the substances mentioned imdried.
Our invention is applicable to the treatment of non-gelatin emulsions in general. However, it is 01 particular value in connection with the 2 treatment of emulsions containing a cellulose ester carrier containing between about 26 and 33% acyl and of polyvinyl resins, particularly polyvinyl acetal resins.
' Example A film carrying an emulsion of silver halide in a cellulose acetate-propionate carrier (22.5%
acetyl and 17.0% proplonyl) was exposed, developed,' iixed andwashed in the usual manner.
35 -When introduced into the washing bath the illm 4o sulted in a clear fllm on drying.
became opalescent and remained so to a lesser degree when dried. The use of a supplemental bath immediately following fixing and contain-' ing 25% ethanolamine in aqueous solution re- What we claim is:
1. The method or removing opalescence iro a photographic'element which comprises treating the opalescent ;.hotographic element bearing a non-gelatin layer containing a developed and mediately alter such as immediately alter develop z, fixing and/or washing. 0n the other hand much the same-results can be obtained if the photographic element is maintained in a wet condition after the processing treatment and is treatedto remove the opalescence at any subsequent time. It ha been found that it the photographic element is first permitted to dry the coalescent quality is more dimcult to remove. However. it is to be understood that our invenopalescence in; a photographic element which Q silver image with a solution or a member ,0! the group consisting of ethylenediamine, ethav nolamine, triethanolamine and alcohol.
2. The method of preventing or removing comprises treating the photographic element bearing a non-gelatin layer containing a silver image with a solution containing a member 01' the group consisting of ethylenediamine, ethanolamine, triethanolamine and alcohol.
3. The method of preventing or removing opalescence in' a photographic element which comprises treating the photographic element bearing a cellulose ester layer containing a developed and fixed silver image with a solution containing a member of the group consisting of ethylenediamine, ethanolamine, triethanolamine opalescence in a photographic element which comprises treating the photographic element bearing a .polyvinyl resin layer containing a developed and fixed silver image with a solution containing a member of the group consisting of ethylenediamine, ethanolamine, tricthanolamine and alcohol.
6. The method of preventing or removing .opalescence in a photographic element which comprises treating the photographic element bearing a polyvinyl acetal layer containing a developed and fixed silver image with asolution containing a member of the group consisting of ethylenediamine, ethanolamine, trlethanolamine and alcohol.
JOHN I. CRAB'I'REE. GEORGE T. EATON.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US462232A US2377325A (en) | 1942-10-16 | 1942-10-16 | Treatment of nongelatin emulsions |
FR950826D FR950826A (en) | 1942-10-16 | 1947-08-02 | Improvements to the process for treating emulsions with a binder other than gelatin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US462232A US2377325A (en) | 1942-10-16 | 1942-10-16 | Treatment of nongelatin emulsions |
Publications (1)
Publication Number | Publication Date |
---|---|
US2377325A true US2377325A (en) | 1945-06-05 |
Family
ID=23835674
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US462232A Expired - Lifetime US2377325A (en) | 1942-10-16 | 1942-10-16 | Treatment of nongelatin emulsions |
Country Status (2)
Country | Link |
---|---|
US (1) | US2377325A (en) |
FR (1) | FR950826A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2967771A (en) * | 1957-07-16 | 1961-01-10 | Kaner David | Rapid acting flame-retardant film emulsion drying solution |
WO1988010450A1 (en) * | 1987-06-22 | 1988-12-29 | Eastman Kodak Company | Stabilizing bath for use in photographic processing |
EP0345172A1 (en) * | 1988-06-03 | 1989-12-06 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Photographic stabilizing bath containing hydrolyzed polymaleic anhydride |
-
1942
- 1942-10-16 US US462232A patent/US2377325A/en not_active Expired - Lifetime
-
1947
- 1947-08-02 FR FR950826D patent/FR950826A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2967771A (en) * | 1957-07-16 | 1961-01-10 | Kaner David | Rapid acting flame-retardant film emulsion drying solution |
WO1988010450A1 (en) * | 1987-06-22 | 1988-12-29 | Eastman Kodak Company | Stabilizing bath for use in photographic processing |
EP0345172A1 (en) * | 1988-06-03 | 1989-12-06 | EASTMAN KODAK COMPANY (a New Jersey corporation) | Photographic stabilizing bath containing hydrolyzed polymaleic anhydride |
Also Published As
Publication number | Publication date |
---|---|
FR950826A (en) | 1949-10-07 |
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