Patent US3775113A successfully refreshed from Google Patents.
US3775113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive image transfer
Assignee: 3M Co
•
Filing: 1972-02-09
•
Granted: 1973-11-27
•
Expires: 1992-02-09
Abstract
Abstract A process for transferring positive images of an original to receptor surfaces is provided. The process utilizes a transfer sheet comprising a flexible, dimensionally stable film support bearing a thermoplastic photosolubilizable layer which, after imagewise exposure and development to remove exposed areas, may be applied to a receptor surface to transfer a positive image of the original to the receptor.
Inventors
- 👤 J Bonham
- 👤 P Petrellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:37
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/34; G03F7/346; G03F3/00; G03F3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
The process of claim 1 wherein said positive image of said original is transferred to said receptor by means of heat and pressure.
Claim 2
Dependent Claim
26 words
The process of claim 1 wherein said photosolubilizable composition comprises a. a water-insoluble organic compound containing one or more acid-degradable groups, the group having the formula
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein said flexible carrier sheet is untreated polyester.
Claim 4
Dependent Claim
12 words
The process of claim 4 wherein said untreated polyester is polyethylene terephthalate.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein said carrier sheet is treated polyester.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein said receptor contains an image.
Claim 7
Dependent Claim
123 words
A process for the sequential transfer of a composite image to a single receptor comprising the steps of a. exposing a transfer sheet to actinic radiation in an imagewise pattern through a separation positive original, said transfer sheet comprising i. a flexible, dimensionally stable, impermeable carrier, and ii. overlying and in direct contact with one surface of said carrier sheet a thermoplastic photosolubilizable layer, b. removing exposed areas of said photosolubilizable layer from said carrier sheet whereby a positive image of said separation original remains on said carrier sheet; c. transferring said positive image of said separation original to said receptor, d. repeating steps (a) through (c), transferring said positive image in registration with the imaged receptor until said composite image is formed.
Claim 8
Dependent Claim
25 words
The process of claim 8 wherein said positive image of said separation positive original is transferred to said receptor by means of heat and pressure.
References Cited (Backward Citations)
US3395014A
Cited
US3536489A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |