US3392667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multicolor electrostatic printing
Assignee: Interchemical Corp
•
Filing: 1965-06-07
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Granted: 1968-07-16
•
Expires: 1985-06-07
Abstract
No abstract record available.
Inventors
- 👤 Norman S Cassel
- 👤 Smith Daniel
- 👤 Robert B Reif
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:51
CPC Classifications
B; B41; B41M; B41M1/00; B41M1/26; B41M1/06; B41M1/14; B41M1/20; G; G03; G03G; G03G15/00; G03G15/01; G03G15/0142; G03G15/0178; G03G15/0194; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
174 words
THE METHOD OF MULTICOLOR PRINTING WHEREIN A MULTICOLOR IMAGE IS FORMED ON A SUBSTRATE WITH A DRY PRINTING POWDER WHICH COMPRISES: (A) FURNISHING PRINTING POWDERS OF DIFFERENT COLORS TO THE PRINTING AREA OF EACH OF AT LEAST TWO DIFFERENT PRINTING ELEMENTS, SAID POWDERRS BEING ADAPTED TO RECEIVE AND RETAIN AN ELECTROSTATIC CHARGE; (B) DEPOSITING AN ELECTROSTATIC CHARGE ON THE SURFACE OF THE POWDER ON EACH PRINTING ELEMENT; (C) BRINGING THE SURFACE OF AN OFFSET MEMBER SEQUENTIALLY INTO PROXIMITY WITH THE POWDER ON EACH PRINTING ELEMENT WHILE SAID POWDER STILL RETAINS CHARGE; (D) CREATING AN ELECTROSTATIC FIELD WITH RESPECT TO EACH OF SAID PRINTING ELEMENTS, AT A LOCATION FOR EACH ELEMENT WHERE SAID OFFSET MEMBER IS OF PROXIMITY WITH THE POWDER AND WHILE SAID POWDER STILL RETAINS A CHARGE, SAID ELECTROSTATIC FIELD BEING OF SUCH STRENGTH THAT SAID PRINTING POWDERS ARE TRANSFERRED FROM THE PRINTING ELEMENTS TO THE SAID OFFSET MEMBER TO FORM A MULTICOLOR IMAGE; AND (E) OFFSETTING THE SAID MULTICOLOR IMAGE IN A SINGLE TRANSFER FROM SAID OFFSET MEMBER TO A DESIRED SUBSTRATE.
Claim 2
Independent Claim
174 words
THE METHOD OF MULTICOLOR PRINTING WHEREIN A MULTICOLOR IMAGE IS FORMED ON A SUBSTRATE WITH A DRY PRINTING POWDER WHICH COMPRISES: (A) FURNISHING PRINTING POWDERS OF DIFFERENT COLORS TO THE PRINTING AREA OF EACH OF AT LEAST TWO DIFFERENT PRINTING ELEMENTS, SAID POWDERRS BEING ADAPTED TO RECEIVE AND RETAIN AN ELECTROSTATIC CHARGE; (B) DEPOSITING AN ELECTROSTATIC CHARGE ON THE SURFACE OF THE POWDER ON EACH PRINTING ELEMENT; (C) BRINGING THE SURFACE OF AN OFFSET MEMBER SEQUENTIALLY INTO PROXIMITY WITH THE POWDER ON EACH PRINTING ELEMENT WHILE SAID POWDER STILL RETAINS CHARGE; (D) CREATING AN ELECTROSTATIC FIELD WITH RESPECT TO EACH OF SAID PRINTING ELEMENTS, AT A LOCATION FOR EACH ELEMENT WHERE SAID OFFSET MEMBER IS OF PROXIMITY WITH THE POWDER AND WHILE SAID POWDER STILL RETAINS A CHARGE, SAID ELECTROSTATIC FIELD BEING OF SUCH STRENGTH THAT SAID PRINTING POWDERS ARE TRANSFERRED FROM THE PRINTING ELEMENTS TO THE SAID OFFSET MEMBER TO FORM A MULTICOLOR IMAGE; AND (E) OFFSETTING THE SAID MULTICOLOR IMAGE IN A SINGLE TRANSFER FROM SAID OFFSET MEMBER TO A DESIRED SUBSTRATE.
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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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |