US3088402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplicating
Assignee: Columbia Ribbon and Carbon Manufacturing Co Inc
•
Filing: 1960-03-31
•
Granted: 1963-05-07
•
Expires: 1980-03-31
Abstract
No abstract record available.
Inventors
- 👤 Douglas A Newman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:06
CPC Classifications
G; G03; G03G; G03G13/00; G03G13/26; G03G13/30; G03G13/14; G03G13/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A METHOD OF PRODUCING AN IMAGED HECTOGRAPH MASTER ON A FLEXIBLE MASTER SHEET BY USE OF A TRANSFER SHEET COATED WITH A TRANSFERABLE LAYER OF COPY-PRODUCING MATERIAL INCLUDING THE STEPS OF: (A) PRODUCING ON A PLATE A LATENT ELECTROSTATIC IMAGE OF THE COPY TO BE REPRODUCED; (B) DEVELOPING SAID LATENT IMAGE ON SAID PLATE WITH AN ELECTROSCOPIC POWER TACKIFIABLE BY HEAT TO FORM A POWDER IMAGE OF SAID COPY; (C) TRANSFERRING SAID POWDER IMAGE FROM SAID PLATE TO ONE OF SAID SHEETS; (D) SUPERPOSING SAID SHEETS SO THAT THE POWDER IMAGE IS IN INTIMATE CONTACT WITH THE MASTER SHEET AND THE TRANSFERABLE LAYER OF THE TRANSFER SHEET AND HEATING THE SHEET AND THE POWDER IMAGE THEREON TO A TEMPERATURE SUFFICIENTLY HIGH TO RENDER THE POWDER IMAGE TACKY; (E) PERMITTING THE TACKIFIED POWDER IMAGE TO SOLIDIFY AND BOND TO THE MASTER SHEET AND TO THE TRANSFERABLE LAYER OF THE TRANSFER SHEET; AND (F) STRIPPING THE SHEETS APART; WHEREBY THOSE PORTIONS OF THE TRANSFERABLE LAYER WHICH HAVE BEEN BONDED TO THE SOLIDIFIED IMAGE ON THE MASTER SHEET ARE SEPARATED FROM THE TRANSFER SHEET TO PRODUCE AN IMAGED HECTOGRAPH MASTER.
Claim 2
Independent Claim
187 words
A METHOD OF PRODUCING AN IMAGED HECTOGRAPH MASTER ON A FLEXIBLE MASTER SHEET BY USE OF A TRANSFER SHEET COATED WITH A TRANSFERABLE LAYER OF COPY-PRODUCING MATERIAL INCLUDING THE STEPS OF: (A) PRODUCING ON A PLATE A LATENT ELECTROSTATIC IMAGE OF THE COPY TO BE REPRODUCED; (B) DEVELOPING SAID LATENT IMAGE ON SAID PLATE WITH AN ELECTROSCOPIC POWER TACKIFIABLE BY HEAT TO FORM A POWDER IMAGE OF SAID COPY; (C) TRANSFERRING SAID POWDER IMAGE FROM SAID PLATE TO ONE OF SAID SHEETS; (D) SUPERPOSING SAID SHEETS SO THAT THE POWDER IMAGE IS IN INTIMATE CONTACT WITH THE MASTER SHEET AND THE TRANSFERABLE LAYER OF THE TRANSFER SHEET AND HEATING THE SHEET AND THE POWDER IMAGE THEREON TO A TEMPERATURE SUFFICIENTLY HIGH TO RENDER THE POWDER IMAGE TACKY; (E) PERMITTING THE TACKIFIED POWDER IMAGE TO SOLIDIFY AND BOND TO THE MASTER SHEET AND TO THE TRANSFERABLE LAYER OF THE TRANSFER SHEET; AND (F) STRIPPING THE SHEETS APART; WHEREBY THOSE PORTIONS OF THE TRANSFERABLE LAYER WHICH HAVE BEEN BONDED TO THE SOLIDIFIED IMAGE ON THE MASTER SHEET ARE SEPARATED FROM THE TRANSFER SHEET TO PRODUCE AN IMAGED HECTOGRAPH MASTER.
References Cited (Backward Citations)
US1340342A
Cited
US1801775A
Cited
US2015570A
Cited
US2073033A
Cited
US2385599A
Cited
US2508725A
Cited
US2671734A
Cited
US2872340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |