US3898086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet material useful in image transfer techniques
Assignee: 3M Co
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Filing: 1974-07-12
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Granted: 1975-08-05
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Expires: 1994-07-12
Abstract
Abstract Sheet material is provided which is useful in image transfer techniques whereby an image of an original is formed on a suitable receptor. A method is also provided for forming a colored image of an original on a differently colored receptor.
Inventors
- 👤 Victor R Franer
- 👤 Darrell C Burman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:17
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/48; G; G03; G03C; G03C1/00; G03C1/494; G03C1/498
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
171 words
SHEET MATERIAL USEFUL IN IMAGE TRANSFER TECHNIQUES COMPRISING. A. A THIN, FLEXIBLE BACKING WHICH IS TRANSPARENT TO INFRARED RADIATION, B. AN IMAGEABLE LAYER COATED OVER ONE MAJOR SURFACE OF SAID BACKING, SAID IMAGEABLE LAYER BEING CAPABLE OF PROVIDING INFRARED-ABSORPTIVE IMAGE AREAS IN ONE OF THE FOLLOWING MANNERS. I. UPON IMAGEWISE EXPOSURE THEREOF TO A HEAT PATTERN, OR II. UPON IMAGEWISE EXPOSURE THEREOF TO A LIGHT PATTERN, FOLLOWED BY DEVELOPMENT, C. A CONTINUOUS HEAT-FSSIBLE INFRARED-TRANSPARENT FIRST LAYER COATED OVER THE OTHER MAJOR SURFACE OF SAID BACKING, SAID HEAT-FUSIBLE LAYER COMPRISING A MIXTURE OF RESIN AND WAX AND BEING TACKY AT TEMPERATURES IN THE RANGE OF ABOUT 60* TO 310*C, AND D. A CONTINUOUS, NON-TACKY, INFRARED-TRANSPARENT TOP LAYER OVER SAID FIRST LAYER, SAID TOP LAYER COMPRISING A MIXTURE OF RESIN AND WAX AND HAVING A SOFTENING POINT AT LEAST AS HIGH AS SAID FIRST LAYER, SAID TOP LAYER BEING AT A COATING WEIGHT IN THE RANGE OF ABOUT 0.1 TO 0.9 GRAMS PER SQUARE FOOT, AND SAID TOP LAYER HAVING A MATTE SURFACE.
Claim 2
Dependent Claim
171 words
SHEET MATERIAL USEFUL IN IMAGE TRANSFER TECHNIQUES COMPRISING. A. A THIN, FLEXIBLE BACKING WHICH IS TRANSPARENT TO INFRARED RADIATION, B. AN IMAGEABLE LAYER COATED OVER ONE MAJOR SURFACE OF SAID BACKING, SAID IMAGEABLE LAYER BEING CAPABLE OF PROVIDING INFRARED-ABSORPTIVE IMAGE AREAS IN ONE OF THE FOLLOWING MANNERS. I. UPON IMAGEWISE EXPOSURE THEREOF TO A HEAT PATTERN, OR II. UPON IMAGEWISE EXPOSURE THEREOF TO A LIGHT PATTERN, FOLLOWED BY DEVELOPMENT, C. A CONTINUOUS HEAT-FSSIBLE INFRARED-TRANSPARENT FIRST LAYER COATED OVER THE OTHER MAJOR SURFACE OF SAID BACKING, SAID HEAT-FUSIBLE LAYER COMPRISING A MIXTURE OF RESIN AND WAX AND BEING TACKY AT TEMPERATURES IN THE RANGE OF ABOUT 60* TO 310*C, AND D. A CONTINUOUS, NON-TACKY, INFRARED-TRANSPARENT TOP LAYER OVER SAID FIRST LAYER, SAID TOP LAYER COMPRISING A MIXTURE OF RESIN AND WAX AND HAVING A SOFTENING POINT AT LEAST AS HIGH AS SAID FIRST LAYER, SAID TOP LAYER BEING AT A COATING WEIGHT IN THE RANGE OF ABOUT 0.1 TO 0.9 GRAMS PER SQUARE FOOT, AND SAID TOP LAYER HAVING A MATTE SURFACE.
Claim 3
Dependent Claim
22 words
Sheet material in accordance with claim 1 wherein said imageable layer is visibly heat-sensitive and forms infrared-absorptive image areas when locally heated.
Claim 4
Dependent Claim
30 words
Sheet material in accordance with claim 2 wherein said imageable layer comprises, in intimate association, silver soap of a long chain fatty acid and a phenolic co-reactant for said soap.
Claim 5
Dependent Claim
51 words
Sheet material in accordance with claim 2 wherein said imageable layer comprises: a mixture of ferric and silver soaps of long chain fatty acids wherein said silver soap represents between 10 and 80 percent by weight of said mixture; a toner for the silver image; and phenolic co-reactant for said soaps.
Claim 6
Dependent Claim
13 words
Sheet material in accordance with claim 1 wherein said imageable layer is light-sensitive.
Claim 7
Dependent Claim
27 words
Sheet material in accordance with claim 5 wherein said imageable layer includes a major proportion of organic silver salt oxidizing agent and reducing agent for silver ion.
Claim 8
Dependent Claim
15 words
Sheet material in accordance with claim 1 wherein said backing comprises a transparent plastic film.
Claim 9
Dependent Claim
24 words
Sheet material in accordance with claim 1 wherein said heat-fusible layer comprises a major amount of polyamide resin and a minor amount of wax.
Claim 10
Dependent Claim
62 words
Sheet material in accordance with claim 1, wherein said first layer comprises particles of wax dispersed throughout a continuous phase of resin, said particles being in the range of about 0.5 to 2.5 microns; and wherein said top layer comprises particles of wax dispersed throughout a continuous phase of resin, said particles being in the range of about 2 to 10 microns.
References Cited (Backward Citations)
US3859094A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |