US3989569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous copying method
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
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Filing: 1975-02-10
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Granted: 1976-11-02
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Expires: 1995-02-10
Abstract
Abstract A continuous ink-transfer printing system employing a hot-melt wax imaging composition supported on a strong pressure-conforming plastic film web which is continuously recoated with fresh imaging composition to replace imaging composition which is imagewise transferred at a pressure-imaging station. The system comprises an ink-coating station, a pressure-imaging station and an ink-melting station associated with the ink-coating station.
Inventors
- 👤 Douglas A. Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:17
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/10; B41M5/025; B41M5/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
Continuous pressure-copying method comprising the steps of coating a continuous web of heat-resistant, memory-possessing plastic film with a uniformly thin original layer of heat-meltable pressure-transferable solid wax imaging composition to form a transfer element, moving said web to a pressure-transfer station where imagewise portions of said solid layer are pressure-transferred to a copy sheet under the effects of imaging pressure applied to said transfer element, and moving said used coated heat-resistant web to a recoating station where the used coating is heat-melted to a flowable condition, replaced with a fresh coating of identical imaging composition in a uniform thickness corresponding to the thickness of the original layer and is solidified prior to re-entry into the pressure-transfer station.
Claim 2
Dependent Claim
117 words
Continuous pressure-copying method comprising the steps of coating a continuous web of heat-resistant, memory-possessing plastic film with a uniformly thin original layer of heat-meltable pressure-transferable solid wax imaging composition to form a transfer element, moving said web to a pressure-transfer station where imagewise portions of said solid layer are pressure-transferred to a copy sheet under the effects of imaging pressure applied to said transfer element, and moving said used coated heat-resistant web to a recoating station where the used coating is heat-melted to a flowable condition, replaced with a fresh coating of identical imaging composition in a uniform thickness corresponding to the thickness of the original layer and is solidified prior to re-entry into the pressure-transfer station.
Claim 3
Dependent Claim
19 words
Continuous method according to claim 1 in which said continuous web is an endless web of said plastic film.
Claim 4
Dependent Claim
18 words
Continuous method according to claim 1 in which said continuous web is a roll of said plastic film.
Claim 5
Dependent Claim
45 words
Continuous method according to claim 1 in which said plastic film comprises an oriented film having a thickness of from about 0.5 mil to 1.5 mils and is selected from the group consisting of polyethylene terephthalate, polyvinyl fluoride and polytetrafluoroethylene and laminates comprising said films.
Claim 6
Dependent Claim
42 words
Continuous method according to claim 1 in which said wax imaging composition is a hot-melt wax hextograph imaging composition and the used coating is melted in the recoating station, supplemented by coating thereon additional identical imaging composition, leveled and solidified by cooling.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |