US4588673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retouchable mat film
Assignee: Fujifilm Holdings Corp
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Filing: 1985-02-22
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Granted: 1986-05-13
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Expires: 2005-02-22
Abstract
Abstract A retouchable mat film comprising a hydrophobic support which has formed thereon a mat layer containing silicon dioxide as a matting agent is disclosed. The mat layer further includes a mixture of poly(methyl methacrylate) or a copolymer containing at least 80 wt % of methyl methacrylate and a hydrophilic polymer as a binder. This mat film withstands several retouching operations in ink.
Inventors
- 👤 Shinzi Kataoka
- 👤 Yukio Shinagawa
- 👤 Shinji Sakaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:42
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/95; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/2438; Y10T428/24388; Y10T428/24405; Y10T428/24942; Y10T428/25; Y10T428/252; Y10T428/259; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31935
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
111 words
A wash-off photographic material, comprising: a hydrophobic support having formed thereon: a mat layer comprising: a silicon dioxide matting agent; and a binder comprised of a mixture of poly(methyl methacrylate) or a copolymer containing at least 80 wt % of methyl methacrylate and a hydrophilic polymer wherein the mixture includes the hydrophilic polymer in an amount within the range of 80 to 20 wt % based on the total weight of the binder; and wherein the ratio of the matting agent to the polymethyl methacrylate or copolymer containing at least 80 wt % of methyl methacrylate is less than 5:1 or less by weight; and a photosensitive silver halide emulsion layer.
Claim 2
Dependent Claim
111 words
A wash-off photographic material, comprising: a hydrophobic support having formed thereon: a mat layer comprising: a silicon dioxide matting agent; and a binder comprised of a mixture of poly(methyl methacrylate) or a copolymer containing at least 80 wt % of methyl methacrylate and a hydrophilic polymer wherein the mixture includes the hydrophilic polymer in an amount within the range of 80 to 20 wt % based on the total weight of the binder; and wherein the ratio of the matting agent to the polymethyl methacrylate or copolymer containing at least 80 wt % of methyl methacrylate is less than 5:1 or less by weight; and a photosensitive silver halide emulsion layer.
Claim 3
Dependent Claim
21 words
A wash-off photographic material as claimed in claim 1, wherein the photosensitive silver halide emulsion layer contains a tanning developing agent.
Claim 4
Dependent Claim
24 words
A wash-off photographic material as claimed in claim 1, further comprising: a tanning developing agent-containing layer adjacent to the photosensitive silver halide emulsion layer.
Claim 5
Dependent Claim
26 words
A wash-off photographic material as claimed in claim 1, further comprising: a carbon black-containing layer positioned between the support and the photosensitive silver halide emulsion layer.
Claim 6
Dependent Claim
24 words
A wash-off photographic material as claimed in claim 1, wherein the matting agent has a particle size within the range of 0.5 to 10μ.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |