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US4232111A
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Photographic photosensitive element with protective layer and image forming method using same
Assignee: Fujifilm Holdings Corp
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Filing: 1977-10-11
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Granted: 1980-11-04
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Expires: 1997-10-11
Abstract
Abstract A photographic photosensitive element containing copolymers comprising (a) 30 to 70 mole % of the recurring unit represented by the formula (I) ##STR1## wherein R 1 is a hydrogen atom or a methyl group; and (b) 70 to 30 mole % of the recurring unit represented by the formula (II) ##STR2## wherein R 2 is a hydrogen atom or a methyl group and M is selected from the group consisting of hydrogen, lithium, sodium, potassium and NH 4 ; in the most upper layer of the element, suitable for processing at temperatures of at least about 27° C. to form an image.
Inventors
- 👤 Takushi Miyazako
- 👤 Shigeru Nagatomo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C1/76; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
A photographic photosensitive element containing at least one silver halide emulsion layer and as the uppermost layer thereof a protective layer containing about 10 to about 70% by weight of a copolymer consisting of (a) 30 to 70 mole % of the recurring unit represented by the formula (I) ##STR7## wherein R 1 is a hydrogen atom or a methyl group; and (b) 70 to 30 mole % of the recurring unit represented by the formula (II) ##STR8## wherein R 2 is a hydrogen atom or a methyl group and M is selected from the group consisting of hydrogen, lithium, sodium, potassium and NH 4 .
Claim 2
Dependent Claim
106 words
A photographic photosensitive element containing at least one silver halide emulsion layer and as the uppermost layer thereof a protective layer containing about 10 to about 70% by weight of a copolymer consisting of (a) 30 to 70 mole % of the recurring unit represented by the formula (I) ##STR7## wherein R 1 is a hydrogen atom or a methyl group; and (b) 70 to 30 mole % of the recurring unit represented by the formula (II) ##STR8## wherein R 2 is a hydrogen atom or a methyl group and M is selected from the group consisting of hydrogen, lithium, sodium, potassium and NH 4 .
Claim 3
Dependent Claim
17 words
The photographic photosensitive element according to claim 1, wherein the uppermost layer further contains a hydrophilic colloid.
Claim 4
Dependent Claim
47 words
The photographic photosensitive element according to claim 2, wherein the hydrophilic colloid is selected from the group consisting of gelatin, colloidal albumin, casein, a cellulose derivative, sodium alginate, a saccharide derivative, agar, a gelatin derivative, polyvinyl alcohol, an acrylic acid polymer or copolymer, polyacrylamide and polyvinyl pyrrolidone.
Claim 5
Dependent Claim
21 words
The photographic photosensitive element according to claim 1, wherein the uppermost layer further contains a hardening agent for the hydrophilic colloid.
Claim 6
Dependent Claim
29 words
A method for forming an image wherein reticulation is eliminated or minimized which comprises development processing an exposed photographic photosensitive element of claim 1 at 27° C. or higher.
Claim 7
Dependent Claim
37 words
The photographic photosensitive element of claim 1 wherein said copolymer consists of 40 to 60 mole % of the unit of the formula I and 60 to 40 mole % of the unit of the formula II.
Claim 8
Dependent Claim
33 words
The photographic photosensitive element of claim 1 wherein said copolymer has a reduced viscosity as measured in a 1% by weight sodium chloride aqueous solution at 30° C. of about 0.2 to 2.0.
Claim 9
Dependent Claim
16 words
The photographic photosensitive element of claim 7 wherein said reduced viscosity is about 0.3 to 1.0.
Claim 10
Dependent Claim
16 words
The photographic photosensitive element of claim 1 wherein said copolymer consists of styrene and acrylic acid.
Claim 11
Dependent Claim
16 words
The photographic photosensitive element of claim 1 wherein said copolymer consists of styrene and methacrylic acid.
Claim 12
Dependent Claim
17 words
The photographic photosensitive element of claim 1 wherein said copolymer consists of vinyl toluene and acrylic acid.
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) | 1983-11-04 | 1984-05-05 | 1984-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-04 | 1988-05-05 | 1988-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-04 | 1992-05-05 | 1992-11-04 | $7700.00 | Window Closed / Lapsed |