US4356501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated silicon nib for an electrostatic printer
Assignee: Xerox Corp
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Filing: 1979-11-19
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Granted: 1982-10-26
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Expires: 1999-11-19
Abstract
Abstract Nibs formed as doped lines on a substrate operative to function as a writing head for a non-impact high voltage electrostatic printer. The doped lined styli may be defined with conventional integrated circuit photolithography for increased scratch protection and reduced wearout.
Inventors
- 👤 Ram S. Ronen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/385; B41J2/39; B41J2/395
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
126 words
A stylus device for recording discrete electrostatic charges on a dielectric media moved in a plane past a surface of said device, said stylus device comprising: a rigid substrate; a first layer of dielectric material overlying at least a portion of a surface of said substrate; a stylus array positioned at the exposed surface of said first layer of dielectric material, said stylus array being comprised of a plurality of electrically conductive stylii lying in a plane substantially orthogonal to said plane of movement of said media; a second layer of dielectric material overlying said stylus array; and driver means coupled to each of said stylii for applying a voltage to selected ones of said stylii whereby electrostatic charges are recorded on portions of said media.
Claim 2
Dependent Claim
126 words
A stylus device for recording discrete electrostatic charges on a dielectric media moved in a plane past a surface of said device, said stylus device comprising: a rigid substrate; a first layer of dielectric material overlying at least a portion of a surface of said substrate; a stylus array positioned at the exposed surface of said first layer of dielectric material, said stylus array being comprised of a plurality of electrically conductive stylii lying in a plane substantially orthogonal to said plane of movement of said media; a second layer of dielectric material overlying said stylus array; and driver means coupled to each of said stylii for applying a voltage to selected ones of said stylii whereby electrostatic charges are recorded on portions of said media.
Claim 3
Dependent Claim
131 words
A stylus device for recording discrete electrostatic charges on a dielectric media moved in a plane past a surface of said device, said stylus device comprising: a semiconductor substrate; a first layer of dielectric material overlying at least a portion of a surface of said substrate; a stylus array positioned at the exposed surface of said first layer of dielectric material, said stylus array being comprised of a plurality of electrically conductive stylii lying in a plane substantially orthogonal to said plane of movement of said media; a second layer of dielectric material overlying said stylus array; and driver means formed within said substrate and coupled to each of said stylii for applying a voltage to selected ones of said stylii whereby electrostatic charges are recorded on portions of said media.
Claim 4
Dependent Claim
131 words
A stylus device for recording discrete electrostatic charges on a dielectric media moved in a plane past a surface of said device, said stylus device comprising: a semiconductor substrate; a first layer of dielectric material overlying at least a portion of a surface of said substrate; a stylus array positioned at the exposed surface of said first layer of dielectric material, said stylus array being comprised of a plurality of electrically conductive stylii lying in a plane substantially orthogonal to said plane of movement of said media; a second layer of dielectric material overlying said stylus array; and driver means formed within said substrate and coupled to each of said stylii for applying a voltage to selected ones of said stylii whereby electrostatic charges are recorded on portions of said media.
Claim 5
Dependent Claim
117 words
A stylus device for recording discrete electrostatic charges on a dielectric media moved in a plane past a surface of said device, said device comprising: a substrate of semiconductor material of one conductivity type; a stylus array formed at a surface of said substrate, said stylus array being comprised of a plurality of stylii regions of the other conductivity type lying in a plane substantially orthogonal to said plane of movement of said media; a layer of dielectric material overlying said stylus array; and driver means formed within said substrate and coupled to each of said regions for applying a voltage to selected ones of said regions whereby electrostatic charges are recorded on portions of said media.
Claim 6
Dependent Claim
117 words
A stylus device for recording discrete electrostatic charges on a dielectric media moved in a plane past a surface of said device, said device comprising: a substrate of semiconductor material of one conductivity type; a stylus array formed at a surface of said substrate, said stylus array being comprised of a plurality of stylii regions of the other conductivity type lying in a plane substantially orthogonal to said plane of movement of said media; a layer of dielectric material overlying said stylus array; and driver means formed within said substrate and coupled to each of said regions for applying a voltage to selected ones of said regions whereby electrostatic charges are recorded on portions of said media.
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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) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |