US2955035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Raised xerographic images
Assignee: Xerox Corp
•
Filing: 1956-01-03
•
Granted: 1960-10-04
•
Expires: 1976-01-03
Abstract
No abstract record available.
Inventors
- 👤 Lewis E Walkup
- 👤 William E Bixby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:35
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
205 words
A METHOD OF FORMING A RELIEF IMAGE OF AN ORIGINAL SUBJECT COMPRISING FORMING ON A SURFACE AN IMAGE PATTERN CORRESPONDING TO THE ORIGINAL SUBJECT AND BEING FROM ABOUT 1/4 TO ABOUT 1/2 MIL IN THICKNESS OF FINELY DIVIDED POWDER SUBSEQUENTLY, IN A NON-TACKY AND NON-ADHESIVE STATE, AND SAID POWDER IMAGE PATTERN HAVING BEEN FORMED BY A XEROGRAPHIC PROCESS INCLUDING ELECTRICALLY CHARGING A PHOTOCONDUCTIVE MEMBER, EXPOSING THE MEMBER TO A LIGHT IMAGE OF THE ORIGINAL SUBJECT TO FORM AN ELECTROSTATIC LATENT IMAGE THEREOF, AND DEVELOPING THE LATENT IMAGE ON SAID MEMBER BY THE APPLICATION OF POWDER THERETO, COVERING THE SURFACE TOGETHER WITH THE POWDER THEREON WITH PARTICLES HAVING A PARTICLE SIZE OF AT LEAST ABOUT 10 TIMES THE THICKNESS OF THE POWDER IMAGE PATTERN, SAID POWDER BEING CAPABLE OF BEING RENDERED TACKY AND ADHESIVE, APPLYING A TACKIFYING INFLUENCE TO SAID SURFACE BEARING SAID IMAGE AND SAID PARTICLES TO CAUSE SAID IMAGE TO SOFTEN, TACKIFY AND CONSOLIDATE AND TO BOND SAID PARTICLES TO SAID SURFACE IN THE IMAGE AREAS, SAID SURFACE BEING NON-TACKIFABLE AND SAID PARTICLES BEING SHAPE-RETAINING UNDER SAID TACKIFYING INFLUENCE, REMOVING SAID TACKIFYING INFLUENCE FROM SAID SURFACE TO CAUSE SAID IMAGE TO SOLIDIFY AND LOSE ITS TACKINESS, AND REMOVING FROM SAID SURFACE ALL FREE PARTICLES.
Claim 2
Independent Claim
205 words
A METHOD OF FORMING A RELIEF IMAGE OF AN ORIGINAL SUBJECT COMPRISING FORMING ON A SURFACE AN IMAGE PATTERN CORRESPONDING TO THE ORIGINAL SUBJECT AND BEING FROM ABOUT 1/4 TO ABOUT 1/2 MIL IN THICKNESS OF FINELY DIVIDED POWDER SUBSEQUENTLY, IN A NON-TACKY AND NON-ADHESIVE STATE, AND SAID POWDER IMAGE PATTERN HAVING BEEN FORMED BY A XEROGRAPHIC PROCESS INCLUDING ELECTRICALLY CHARGING A PHOTOCONDUCTIVE MEMBER, EXPOSING THE MEMBER TO A LIGHT IMAGE OF THE ORIGINAL SUBJECT TO FORM AN ELECTROSTATIC LATENT IMAGE THEREOF, AND DEVELOPING THE LATENT IMAGE ON SAID MEMBER BY THE APPLICATION OF POWDER THERETO, COVERING THE SURFACE TOGETHER WITH THE POWDER THEREON WITH PARTICLES HAVING A PARTICLE SIZE OF AT LEAST ABOUT 10 TIMES THE THICKNESS OF THE POWDER IMAGE PATTERN, SAID POWDER BEING CAPABLE OF BEING RENDERED TACKY AND ADHESIVE, APPLYING A TACKIFYING INFLUENCE TO SAID SURFACE BEARING SAID IMAGE AND SAID PARTICLES TO CAUSE SAID IMAGE TO SOFTEN, TACKIFY AND CONSOLIDATE AND TO BOND SAID PARTICLES TO SAID SURFACE IN THE IMAGE AREAS, SAID SURFACE BEING NON-TACKIFABLE AND SAID PARTICLES BEING SHAPE-RETAINING UNDER SAID TACKIFYING INFLUENCE, REMOVING SAID TACKIFYING INFLUENCE FROM SAID SURFACE TO CAUSE SAID IMAGE TO SOLIDIFY AND LOSE ITS TACKINESS, AND REMOVING FROM SAID SURFACE ALL FREE PARTICLES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |