US3301698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for simultaneously developing and fixing electrostatically formed images
Assignee: Harris Graphics Corp
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Filing: 1965-02-18
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Granted: 1967-01-31
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Expires: 1985-02-18
Abstract
No abstract record available.
Inventors
- 👤 Donald L Fauser
- 👤 Edwin R Kolb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:00
CPC Classifications
G; G03; G03G; G03G8/00; G03G13/00; G03G13/06; G03G13/10; G03G15/00; G03G15/01; G03G15/0142; G03G15/0178; G03G15/0194; G03G15/22; G03G5/00; G03G5/12; G03G9/00; G03G9/08; G03G9/12; G03G9/13; G03G9/132
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
THE METHOD OF PRINTING COMPRISING THE STEPS OF FORMING AN ELECTROSTATIC LATENT IMAGE ON AN IMAGE BEARING MEMBER HAVING AN IMAGE BEARING SURFACE, TREATING SAID IMAGE BEARING MEMBER WITH A LIQUID DEVELOPER INCLUDING AN ELECTRICALLY INSULATING SUSPENSION MEDIUM HAVING MARKING ELEMENTS THEREIN CAPABLE OF DEPOSITION ON SAID SURFACE IN ACCORDANCE WITH SAID LATENT IMAGE, SAID MARKING ELEMENTS INCLUDING A POLYMERIC MATERIAL ASSOCIATED THEREWITH FOR SUBSTANTIALLY PERMANENTLY ADHERING TO SAID SURFACE UPON REMOVAL OF SAID MEDIUM, SAID MEDIUM BEING SUBSTANTIALLY FREE OF POLYMERIC MATERIAL EXCEPT THAT ASSOCIATED WITH SAID MARKING ELEMENTS, AND PRESSURECONTACTING THE IMAGE BEARING MEMBER ACROSS THE WIDTH THEREOF AFTER DEVELOPMENT OF SAID IMAGE WITH A ROLLING MEMBER TRAVELLING AT THE SURFACE SPEED AND IN THE SAME DIRECTION AS SAID IMAGE BEARING MEMBER FOR REMOVING SUBSTANTIALLY ALL OF SAID MEDIUM FROM SAID SURFACE TO EFFECT SUBSTANTIALLY PERMANENT ADHESION OF THE DEPOSITED MARKING ELEMENTS TO SAID SURFACE.
Claim 2
Independent Claim
147 words
THE METHOD OF PRINTING COMPRISING THE STEPS OF FORMING AN ELECTROSTATIC LATENT IMAGE ON AN IMAGE BEARING MEMBER HAVING AN IMAGE BEARING SURFACE, TREATING SAID IMAGE BEARING MEMBER WITH A LIQUID DEVELOPER INCLUDING AN ELECTRICALLY INSULATING SUSPENSION MEDIUM HAVING MARKING ELEMENTS THEREIN CAPABLE OF DEPOSITION ON SAID SURFACE IN ACCORDANCE WITH SAID LATENT IMAGE, SAID MARKING ELEMENTS INCLUDING A POLYMERIC MATERIAL ASSOCIATED THEREWITH FOR SUBSTANTIALLY PERMANENTLY ADHERING TO SAID SURFACE UPON REMOVAL OF SAID MEDIUM, SAID MEDIUM BEING SUBSTANTIALLY FREE OF POLYMERIC MATERIAL EXCEPT THAT ASSOCIATED WITH SAID MARKING ELEMENTS, AND PRESSURECONTACTING THE IMAGE BEARING MEMBER ACROSS THE WIDTH THEREOF AFTER DEVELOPMENT OF SAID IMAGE WITH A ROLLING MEMBER TRAVELLING AT THE SURFACE SPEED AND IN THE SAME DIRECTION AS SAID IMAGE BEARING MEMBER FOR REMOVING SUBSTANTIALLY ALL OF SAID MEDIUM FROM SAID SURFACE TO EFFECT SUBSTANTIALLY PERMANENT ADHESION OF THE DEPOSITED MARKING ELEMENTS TO SAID SURFACE.
Claim 3
Dependent Claim
153 words
A DEVELOPER UNIT FOR ELECTROSTATIC PHOTOGRAPHY WHEREIN A WEB MEMBER HAVING AN ELECTROSTATIC LATENT IMAGE THEREON IS TREATED WITH A LIQUID DEVELOPER, COMPRISING A TANK FOR RECEIVING A QUANTITY OF LIQUID DEVELOPER INCLUDING AN ELECTRICALLY INSULATING LIQUID HAVING MARKING ELEMENTS SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN, ROTATABLE DRUM MEANS POSITIONED TRANSVERSELY OF SAID TANK, AT LEAST A PORTION OF SAID DRUM MEANS BEING POSITIONED BELOW THE LEVEL OF THE LIQUID DEVELOPER IN SAID TANK, MEANS FOR MAINTAINING TENSION IN SAID WEB MEMBER, SAID WEB MEMBER BEING DIRECTED AROUND SAID DRUM MEANS WITH THE IMAGE BEARING SURFACE IN FACING RELATION WITH SAID TANK AND THAT PORTION OF THE OPPOSITE SURFACE BELOW THE LEVEL OF LIQUID DEVELOPER BEING IN CONTACT WITH SAID DRUM MEANS, ROTATABLE SQUEEGEE MEANS POSITIONED IN SPACED PARALLEL RELATION TO SAID DRUM MEANS AND DEFINING A PRESSURE NIP THEREBETWEEN FOR EFFECTING REMOVAL OF LIQUID ADHERING TO SAID MEMBER AFTER DEVELOPMENT OF SAID LATENT IMAGE.
Claim 4
Dependent Claim
153 words
A DEVELOPER UNIT FOR ELECTROSTATIC PHOTOGRAPHY WHEREIN A WEB MEMBER HAVING AN ELECTROSTATIC LATENT IMAGE THEREON IS TREATED WITH A LIQUID DEVELOPER, COMPRISING A TANK FOR RECEIVING A QUANTITY OF LIQUID DEVELOPER INCLUDING AN ELECTRICALLY INSULATING LIQUID HAVING MARKING ELEMENTS SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN, ROTATABLE DRUM MEANS POSITIONED TRANSVERSELY OF SAID TANK, AT LEAST A PORTION OF SAID DRUM MEANS BEING POSITIONED BELOW THE LEVEL OF THE LIQUID DEVELOPER IN SAID TANK, MEANS FOR MAINTAINING TENSION IN SAID WEB MEMBER, SAID WEB MEMBER BEING DIRECTED AROUND SAID DRUM MEANS WITH THE IMAGE BEARING SURFACE IN FACING RELATION WITH SAID TANK AND THAT PORTION OF THE OPPOSITE SURFACE BELOW THE LEVEL OF LIQUID DEVELOPER BEING IN CONTACT WITH SAID DRUM MEANS, ROTATABLE SQUEEGEE MEANS POSITIONED IN SPACED PARALLEL RELATION TO SAID DRUM MEANS AND DEFINING A PRESSURE NIP THEREBETWEEN FOR EFFECTING REMOVAL OF LIQUID ADHERING TO SAID MEMBER AFTER DEVELOPMENT OF SAID LATENT IMAGE.
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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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |