US4884501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure developing apparatus
Assignee: Brother Industries Ltd
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Filing: 1987-12-10
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Granted: 1989-12-05
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Expires: 2007-12-10
Abstract
Abstract Disclosed is a pressure developing apparatus for pressing a microcapsule sheet carrying photo-sensitive microcapsules applied thereon and having a latent image formed thereon, together with a developer sheet carrying a developer applied thereon, the apparatus comprising a pair of pressure members for pressing the microcapsule and developer sheets therebetween, at least one of the pair of pressure members having a pressing width for pressing the microcapsule sheet together with the developer sheet, the pressing width being selected to be narrower than that of each of the microcapsule sheet and the developer sheet.
Inventors
- 👤 Takeshi Izaki
- 👤 Hiroshi Kawahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:11
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03F; G03F7/00; G03F7/002; G03F7/0022; G03F7/0027; G03B2227/00; G03B2227/32; G03B2227/325
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A pressure developing system including a first sheet containing thereon photo-sensitive microcapsules and having a latent image formed thereon, a second sheet containing thereon a developer for developing said latent image, and a developing apparatus including a pair of pressure rollers for pressing said first and second sheets together therebetween, at least one of said rollers having a stepped portion having a width narrower than the width of either of said sheets whereby the edges of said sheets are not subjected to any pressing force from said pressure rollers.
Claim 2
Dependent Claim
89 words
A pressure developing system including a first sheet containing thereon photo-sensitive microcapsules and having a latent image formed thereon, a second sheet containing thereon a developer for developing said latent image, and a developing apparatus including a pair of pressure rollers for pressing said first and second sheets together therebetween, at least one of said rollers having a stepped portion having a width narrower than the width of either of said sheets whereby the edges of said sheets are not subjected to any pressing force from said pressure rollers.
References Cited (Backward Citations)
US3871290A
Cited
US4212631A
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US4362502A
Cited
US4533231A
Cited
US4399209A
Cited
US4727392A
Cited
US4724303A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-04 | 1993-06-05 | 1993-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-04 | 1997-06-05 | 1997-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-04 | 2001-06-05 | 2001-12-05 | $7700.00 | Window Closed / Lapsed |