Patent US4761311A successfully refreshed from Google Patents.
US4761311A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for glossing a developer sheet and an apparatus useful therein
Assignee: WestRock MWV LLC
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Filing: 1987-02-19
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Granted: 1988-08-02
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Expires: 2007-02-19
Abstract
Abstract A process for glossing a developer sheet and an apparatus useful therein are provided. The developer sheet has a thermoplastic developer resin on the surface thereof wherein the thermoplastic developer resin is capable of forming a film which imparts gloss upon the applications of heat thereto. In the process, an arched plate is heated to a temperature sufficient to cause the thermoplastic developer resin to coalesce. The arched plate has a heat transfer limiting blanket thereon to maintain the flatness of the developer sheet. The developer sheet is fed between the convex side of the heated arched plate and a belt held snugly against the plate. The belt is driven so as to move the developer sheet over the heated arched plate.
Inventors
- 👤 Benjamin C. Stone
- 👤 D. Scott Proehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:01
CPC Classifications
G; G03; G03C; G03C5/00; G03F; G03F7/00; G03F7/002; B; B41; B41M; B41M7/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
139 words
A process for glossing a developer sheet having a thermoplastic developer resin on the surface thereof, said thermoplastic developer resin being capable of forming a film which imparts gloss upon the application of heat, comprising the steps of: heating an arched plate to a temperature sufficient to cause said thermoplastic developer resin to coalesce, said arched plate having a heat transfer limiting blanket thereon; feeding said sheet between the convex side of said arched plate and a continuous belt held snugly against said convex side of said arched plate so that said surface of said sheet with said thermoplastic developer resin is adjacent to said belt, said belt exerting minimal contact pressure on said sheet; driving said belt so as to move said sheet over said arched plate; and passing said sheet from between said plate and said belt.
Claim 2
Dependent Claim
139 words
A process for glossing a developer sheet having a thermoplastic developer resin on the surface thereof, said thermoplastic developer resin being capable of forming a film which imparts gloss upon the application of heat, comprising the steps of: heating an arched plate to a temperature sufficient to cause said thermoplastic developer resin to coalesce, said arched plate having a heat transfer limiting blanket thereon; feeding said sheet between the convex side of said arched plate and a continuous belt held snugly against said convex side of said arched plate so that said surface of said sheet with said thermoplastic developer resin is adjacent to said belt, said belt exerting minimal contact pressure on said sheet; driving said belt so as to move said sheet over said arched plate; and passing said sheet from between said plate and said belt.
Claim 3
Dependent Claim
14 words
The process of claim 1 wherein said arched plate has a blanket of polytetrafluoroethylene.
Claim 4
Dependent Claim
25 words
The process of claim 1 wherein said belt is placed around roller means positioned to hold said belt in intimate contact with said arched plate.
Claim 5
Dependent Claim
12 words
The process of claim 3 wherein said belt is a silicone rubber.
Claim 6
Dependent Claim
15 words
The process of claim 1 wherein said arched plate is heated by a heating pad.
Claim 7
Dependent Claim
20 words
The process of claim 5 wherein said arched plate is heated to a temperature of about 105° to 125° C.
Claim 8
Dependent Claim
22 words
The process of claim 2 wherein said polytetrafluoroethylene layer has a thickness of about 0.038 to 0.152 cm (0.015 to 0.060 in).
Claim 9
Dependent Claim
23 words
The process of claim 1 wherein said belt is driven at a speed of about 254 to 660 cm/min (100 to 260 in/min).
Claim 10
Dependent Claim
20 words
The process of claim 3 wherein said belt is subjected to static discharge means prior to contact with said sheet.
References Cited (Backward Citations)
US1913704A
Cited
US1399160A
Cited
US3349222A
Cited
US3478665A
Cited
US3517164A
Cited
US3621201A
Cited
US3857189A
Cited
US3902041A
Cited
US4059394A
Cited
US4147922A
Cited
US4464561A
Cited
US4596920A
Cited
US4537492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-02 | 1992-02-01 | 1992-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-02 | 1996-02-01 | 1996-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-02 | 2000-02-01 | 2000-08-02 | $7700.00 | Window Closed / Lapsed |