US3632376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-stencil assembly
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
•
Filing: 1969-05-09
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Granted: 1972-01-04
•
Expires: 1989-05-09
Abstract
Abstract Heat-stencil assembly for producing an imaged stencil sheet corresponding to an imaged original sheet by means of infrared radiation. The stencil sheet comprises an ink-impervious layer over an ink-permeable substrate, and said layer is removable to the receptive layer on a copy sheet in the heated areas.
Inventors
- 👤 Douglas A Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:53
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/24; B41N1/245; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
15 words
A stencil-forming assembly according to claim 1 in which said particulate matter comprises salicylic acid.
Claim 2
Dependent Claim
43 words
A stencil-forming assembly according to claim 1 in which the said material contained on the support of the stencil sheet comprises a latex coagulant and the barrier layer is a latex which is coagulated thereby and thus prevented from penetrating into the support.
Claim 3
Dependent Claim
60 words
A stencil-forming assembly according to claim 1 in which the said material contained on the support of the stencil sheet comprises a very thin surface layer of vinyl resin to which the thicker barrier layer is applied and which prevents the barrier layer from penetrating into the support and which is removable to the receptive layer with the barrier layer.
Claim 4
Dependent Claim
20 words
A stencil-forming assembly according to claim 1 in which said barrier layer comprises a heat-fused dispersion of vinyl resin particles.
References Cited (Backward Citations)
US1776368A
Cited
US1937751A
Cited
US2508725A
Cited
US2769391A
Cited
US3250637A
Cited
US3384015A
Cited
US3311489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |