US4822727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive material
Assignee: Fujifilm Holdings Corp
•
Filing: 1988-05-25
•
Granted: 1989-04-18
•
Expires: 2008-05-25
Abstract
Abstract A silver halide photographic light-sensitive material having on a support at least one light-sensitive silver halide emulsion layers and at least one light-insensitive upper layers on the emulsion layer, in which at least one of said light-insensitive upper layers contains a polymer latex having a glass transition point of at least 20° C. and the said at least one light-insensitive upper layer and/or at least one other of said at least one light-insensitive upper layer(s) contains a polymer latex having a glass transition point of lower than 20° C. In the silver halide photographic light-sensitive material, at least one of the light-insensitive upper layers can also have a melting time which is longer than that of the light-sensitive silver halide emulsion layer. The silver halide photographic light-sensitive material has high sticking resistance and improved layer strength under low humidity conditions.
Inventors
- 👤 Kunio Ishigaki
- 👤 Yuji Yoshimura
- 👤 Satoshi Kanetake
- 👤 Masaaki Torigoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:13
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/7614; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
76 words
A silver halide photographic light-sensitive material having on a support at least one light-sensitive silver halide emulsion layer and at least one light-sensitive upper layer on the emulsion layer, in which at least one of said light-insensitive upper layer contains a polymer latex having a glass transition point of at least 20° C. and at least one of said light-insensitive upper layer contains a polymer latex having a glass transition point of lower than 20° C.
Claim 2
Dependent Claim
76 words
A silver halide photographic light-sensitive material having on a support at least one light-sensitive silver halide emulsion layer and at least one light-sensitive upper layer on the emulsion layer, in which at least one of said light-insensitive upper layer contains a polymer latex having a glass transition point of at least 20° C. and at least one of said light-insensitive upper layer contains a polymer latex having a glass transition point of lower than 20° C.
Claim 3
Dependent Claim
36 words
The silver halide photographic light-sensitive material as claimed in claim 1, wherein at least one of the light-insensitive upper layer has a melting time which is longer than that of the light-sensitive silver halide emulsion layer.
Claim 4
Dependent Claim
30 words
The silver halide photographic light-sensitive material as claimed in claim 1, wherein the mean particle size of the polymer latexes is in the range of from 0.005 to 1 μm.
Claim 5
Dependent Claim
30 words
The silver halide photographic light-sensitive material as claimed in claim 3, wherein the mean particle size of the polymer latexes is in the range of from 0.02 to 0.1 μm.
Claim 6
Dependent Claim
44 words
The silver halide photographic light-sensitive material as claimed in claim 1, wherein the ratio of the polymer latex having Tg of at least 20° C. to the polymer latex having Tg of lower than 20° C. is from 80/20 to 30/70 by weight ratio.
Claim 7
Dependent Claim
44 words
The silver halide photographic light-sensitive material as claimed in claim 5, wherein the ratio of the polymer latex having Tg of at least 20° C. to the polymer latex having Tg of lower than 20° C. is from 70/30 to 40/60 by weight ratio.
Claim 8
Dependent Claim
45 words
The silver halide photographic light-sensitive material as claimed in claim 1, wherein the addition amount of the polymer latexes is in the range of 5 to 200% based on the weight of the hydrophilic colloid of the layer(s) to which the polymer latexes are added.
Claim 9
Dependent Claim
45 words
The silver halide photographic light-sensitive material as claimed in claim 7, wherein the addition amount of the polymer latexes is in the range of 10 to 100% based on the weight of the hydrophilic colloid of the layer(s) to which the polymer latexes are added.
Claim 10
Dependent Claim
46 words
The silver halide photographic light-sensitive material as claimed in claim 2, wherein the melting time of the light-insensitive upper layer measured in a 0.2N NaOH solution at 75° C. is at least 50 seconds longer than the melting time of the light-sensitive silver halide emulsion layer.
Claim 11
Dependent Claim
46 words
The silver halide photographic light-sensitive material as claimed in claim 9, wherein the melting time of the light-insensitive upper layer measured in a 0.2N NaOH solution at 75° C. is at least 100 seconds longer than the melting time of the light-sensitive silver halide emulsion layer.
Claim 12
Dependent Claim
22 words
The silver halide photographic light-sensitive material as claimed in claim 1, wherein the light-insensitive upper layer is hardened with a polymeric hardener.
Claim 13
Dependent Claim
47 words
The silver halide photographic light-sensitive material as claimed in claim 1, wherein the polymer latex having a glass transition point of at least 20° C. and the polymer latex having a glass transition point of lower than 20° C. are contained in the same light-insensitive upper layer.
Claim 14
Dependent Claim
46 words
The silver halide photographic light-sensitive material as claimed in claim 1, wherein the polymer latex having a glass transition point of at least 20° C. and the polymer latex having a glass transition point of lower than 20° C. are contained in different light-insensitive upper layers.
Claim 15
Dependent Claim
21 words
The silver halide photographic light-sensitive material as claimed in claim 12, wherein said same light-insensitive upper layer is a protective 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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |