Patent US4562140A successfully refreshed from Google Patents.
US4562140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive material for use in diffusion transfer process with matting agents in underlayer
Assignee: Mitsubishi Paper Mills Ltd
•
Filing: 1984-10-11
•
Granted: 1985-12-31
•
Expires: 2004-10-11
Abstract
Abstract Disclosed is a photosensitive material which comprises a support and at least an undercoating layer and a silver halide emulsion layer, said undercoating layer containing a matting agent having an average particle size larger than the thickness of the undercoating layer. Use of this photosensitive material for diffusion transfer process causes neither slipping between the photosensitive material and the image receptive layer nor pinholes in silver images.
Inventors
- 👤 Isao Kohmura
- 👤 Jun Miura
- 👤 Norio Kajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:09
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/52; G03C8/02; G03C8/04; G03C8/06; Y; Y10; Y10S; Y10S430/00; Y10S430/151; Y10S430/155
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
51 words
A photosensitive material for diffusion transfer process which comprises a support and at least an undercoating layer and a silver halide emulsion layer provided on said support, said undercoating layer containing a hydrophilic binder and a matting agent having an average particle size larger than the thickness of the undercoating layer.
Claim 2
Dependent Claim
51 words
A photosensitive material for diffusion transfer process which comprises a support and at least an undercoating layer and a silver halide emulsion layer provided on said support, said undercoating layer containing a hydrophilic binder and a matting agent having an average particle size larger than the thickness of the undercoating layer.
Claim 3
Dependent Claim
23 words
A photosensitive material according to claim 1 wherein said matting agent has an average particle size of about 1 to about 20 μm.
Claim 4
Dependent Claim
28 words
A photosensitive material according to claim 1 wherein the matting agent has an average particle size of about 1.1 or more times the thickness of the undercoating layer.
Claim 5
Dependent Claim
31 words
A photosensitive material according to claim 1 wherein the content of the matting agent in the undercoating layer is about 0.1 to about 30% by weight based on the hydrophilic binder.
Claim 6
Dependent Claim
34 words
A photosensitive material according to claim 1 wherein the matting agent is an inorganic or organic powder selected from silica, titanium dioxide, magnesium oxide, barium sulfate, calcium carbonate, polystyrene, alkylated polystyrene and (meth)acrylic esters.
Claim 7
Dependent Claim
29 words
A diffusion transfer process which comprises imagewise exposing the photosensitive material according to claim 1 and then diffusion transfer developing the material in contact with an image receiving layer.
Claim 8
Dependent Claim
30 words
A diffusion transfer process according to claim 6 wherein matting agent in undercoating layer of the photosensitive material has an average particle size of about 1 to about 20 μm.
Claim 9
Dependent Claim
35 words
A diffusion transfer process according to claim 6 wherein matting agent in undercoating layer of the photosensitive material has an average particle size of about 1.1 or more times the thickness of the undercoating layer.
Claim 10
Dependent Claim
35 words
A diffusion transfer process according to claim 6 wherein the content of matting agent in the undercoating layer of the photosensitive material is about 0.1 to about 30% by weight based on the hydrophilic binder.
Claim 11
Dependent Claim
41 words
A diffusion transfer process according to claim 6 wherein matting agent in undercoating layer of the photosensitive material is an inorganic or organic powder selected from silica, titanium dioxide, magnesium oxide, barium sulfate, calcium carbonate, polystyrene, alkylated polystyrene and (meth)acrylic esters.
References Cited (Backward Citations)
US3370951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |