Patent EP0157469A1 successfully refreshed from Google Patents.
US3877942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming photographic images
Assignee: Fujifilm Holdings Corp
•
Filing: 1974-04-23
•
Granted: 1975-04-15
•
Expires: 1994-04-23
Abstract
Abstract D R A W I N G wherein R represents a hydrogen atom or a methyl group, and M1 and M2 each represents a member selected from the group consisting of a hydrogen atom, a lithium atom, a sodium atom, a potassium atom and an ammonium group, whereby the occurrence of reticulation decreases and anti-adhesive properties are improved. and repeating units represented by the formula (II) A method of forming photographic images which comprises developing at above 30*C a photographic sensitive material comprising a support having thereon at least one photosensitive emulsion layer and a surface layer comprising a hydrophilic binder and containing a copolymer containing repeating units represented by the formula (I)
Inventors
- 👤 Shigeru Nagatomo
- 👤 Kiyotaka Hori
- 👤 Takushi Miyazako
- 👤 Shinji Sakaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:03
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; Y; Y10; Y10S; Y10S430/00; Y10S430/151; Y10S430/162
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A METHOD OF FORMING PHOTOGRAPHIC IMAGES WHICH COMPRISES DEVELOPING AT ABOVE 30*C A PHOTOGRAPHIC ONE MATERIAL COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE PHOTOSENSITIVE EMULSION LAYER AND A SURFACE LAYER COMPRISING A HYDROPHILIC BINDER AND CONTAINING A COPOLYMER INCLUDING REPEATING UNITS REPRESENTED BY THE FORMULA (I)
Claim 2
Independent Claim
47 words
A METHOD OF FORMING PHOTOGRAPHIC IMAGES WHICH COMPRISES DEVELOPING AT ABOVE 30*C A PHOTOGRAPHIC ONE MATERIAL COMPRISING A SUPPORT HAVING THEREON AT LEAST ONE PHOTOSENSITIVE EMULSION LAYER AND A SURFACE LAYER COMPRISING A HYDROPHILIC BINDER AND CONTAINING A COPOLYMER INCLUDING REPEATING UNITS REPRESENTED BY THE FORMULA (I)
Claim 3
Dependent Claim
49 words
The method of forming images of claim 1, wherein said copolymer contains about 40 to 60 percent on a molar basis of the repeating units represented by the formula (I) and about 60 to 40 percent on a molar basis of the repeating units represented by the formula (II).
Claim 4
Dependent Claim
23 words
The method of forming images of claim 1, wherein said surface layer comprises a protective layer which substantially does not form photographic images.
Claim 5
Dependent Claim
29 words
The method of forming images of claim 1, wherein the proportion of said copolymer to said hydrophilic binder in said surface layer ranges from about 5:95 to about 80:20.
Claim 6
Dependent Claim
21 words
The method of forming images of claim 4, wherein said hydrophilic binder comprises a natural or synthetic high molecular weight material.
Claim 7
Dependent Claim
38 words
The method of forming images of claim 5, wheRein said binder is gelatin, albumin, agar agar, a gelatin derivative, a cellulose derivative, polyvinyl alcohol, a partial ester of polyvinyl alcohol, polyacrylamide, polyvinyl pyrrolidone, polyacrylic acid or a polyacrylate.
Claim 8
Dependent Claim
20 words
The method of forming images of claim 1, wherein the surface layer contains a hardening agent for said hydrophilic binder.
Claim 9
Dependent Claim
61 words
The method of forming images of claim 6, wherein said binder is gelatin and said hardening agent is an aldehyde hardening agent, a methylol group or alkylaminomethyl group containing formaldehyde precursor, a 1,4-dioxane hardening agent, an aziridine hardening agent, an isoxazole hardening agent, a carbodiimide hardening agent, an active halogen containing compound, an active vinyl compound or an inorganic hardening agent.
Claim 10
Dependent Claim
16 words
The method of forming images of claim 1, wherein the surface layer includes a matting agent.
Claim 11
Dependent Claim
34 words
The method of forming images of claim 9, wherein the amount of the matting agent ranges from about 0.1 to 10 percent by weight based on the total binder weight of the surface layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |