US3795010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Writing apparatus and method of manufacture
Assignee: Xerox Corp
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Filing: 1971-12-29
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Granted: 1974-02-26
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Expires: 1991-12-29
Abstract
Abstract A stylus and its method of manufacture for forming an image on the recording medium of a printing apparatus having the structure of a substrate upon which a plurality of conductors are etched or printed. The writing edge of the stylus containing the pin electrodes formed by the conductors has a chip of wear resistant or hard material laminated to the substrate to prevent excessive wear of the pin electrodes. Alternately, the substrate itself is made of a wear resistant or hard material to prevent wear of the pin electrodes.
Inventors
- 👤 H Ring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:11
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/385; B41J2/39; B41J2/395
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
149 words
An electrographic printing apparatus wherein a charged image developed by the application of electroscopic toner is formed on a insulated recording medium which advances as a line of print is layed down by a laterally moveable carriage assembly, said recordind medium and carriage assembly moving in response to a signals from a control source comprising; a support member mounted upon said carriage assembly, a writing member having one end mounted upon said support member and a free end spaced from said fixed end, a plurality of conductors insulated from each other running the length of said writing member, and attached thereto, said conductors forming pin electrodes at the free end of said writing member, which initially contact said recording medium and means on the opposite side and spaced from the pin electrodes, but attached to said free end of said writing member, for eventually resisting wear to said pin-electrodes.
Claim 2
Dependent Claim
149 words
An electrographic printing apparatus wherein a charged image developed by the application of electroscopic toner is formed on a insulated recording medium which advances as a line of print is layed down by a laterally moveable carriage assembly, said recordind medium and carriage assembly moving in response to a signals from a control source comprising; a support member mounted upon said carriage assembly, a writing member having one end mounted upon said support member and a free end spaced from said fixed end, a plurality of conductors insulated from each other running the length of said writing member, and attached thereto, said conductors forming pin electrodes at the free end of said writing member, which initially contact said recording medium and means on the opposite side and spaced from the pin electrodes, but attached to said free end of said writing member, for eventually resisting wear to said pin-electrodes.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1 wherein said means for resisting pin electrode wear comprises chip means made of aluminum oxide.
Claim 4
Dependent Claim
20 words
Apparatus according to claim 1 wherein said means for resisting pin electrode wear comprised chip means made of tungsten carbide.
Claim 5
Dependent Claim
116 words
An electrographic printing apparatus wherein an electrostatic image developed by the application of electroscopic marking particles is formed on an insulative recording medium which advances as a line of print and is laid down by a laterally movable carriage assembly, said recording medium and carriage assembly moving in response to signals from a control source comprising: a stylus including a substrate made of ceramic material, an insulating layer attached to one side of said substrate, at least one electrode deposited on said insulating layer, said electrode having a writing tip which initially contacts said recording member, chip means attached to the side of said substrate opposite and spaced from said writing tip for reducing wear thereof.
Claim 6
Dependent Claim
116 words
An electrographic printing apparatus wherein an electrostatic image developed by the application of electroscopic marking particles is formed on an insulative recording medium which advances as a line of print and is laid down by a laterally movable carriage assembly, said recording medium and carriage assembly moving in response to signals from a control source comprising: a stylus including a substrate made of ceramic material, an insulating layer attached to one side of said substrate, at least one electrode deposited on said insulating layer, said electrode having a writing tip which initially contacts said recording member, chip means attached to the side of said substrate opposite and spaced from said writing tip for reducing wear thereof.
Claim 7
Dependent Claim
15 words
Structure according to claim 4 wherein said insulating layer comprises a layer of epoxy glass.
Claim 8
Dependent Claim
114 words
An electrographic printing apparatus wherein an electrostatic image developed by the application of electroscopic marking particles is formeD on an insulative recording medium which advances as a line of print and is layed down by a moveable carriage assembly, said recording medium and carriage assembly moving in response to signals from a source comprising: a substrate, at least one electrode in contact with said recording medium, on one surface of said substrate adjacent one end thereof, and a chip of wear resistant material at a position, initially removed from contact with said recording medium, and on the opposite side and spaced from said electrode, on another surface of said substrate adjacent said one end.
Claim 9
Dependent Claim
114 words
An electrographic printing apparatus wherein an electrostatic image developed by the application of electroscopic marking particles is formeD on an insulative recording medium which advances as a line of print and is layed down by a moveable carriage assembly, said recording medium and carriage assembly moving in response to signals from a source comprising: a substrate, at least one electrode in contact with said recording medium, on one surface of said substrate adjacent one end thereof, and a chip of wear resistant material at a position, initially removed from contact with said recording medium, and on the opposite side and spaced from said electrode, on another surface of said substrate adjacent said one end.
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |