US4373799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-mode electrostatographic printing machine
Assignee: Xerox Corp
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Filing: 1982-01-15
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Granted: 1983-02-15
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Expires: 2002-01-15
Abstract
Abstract A multi-mode electrostatographic printing machine. A first latent image is recorded on a photoconductive member. The first latent image is transferred to a dielectric sheet. Subsequent to this transfer, the sheet is moved to a position where a second image is formed on the dielectric sheet by a stylus array having a plurality of individually actuatable stylii. Operator controls allow either of or both the latent images to be formed on the dielectric sheet. The multi-mode of operation can be extended to include a third image forming device for causing a third latent image to be recorded on the photoconductive member and subsequently transferred to the dielectric sheet. The operator controls are similarly extended to allow any combination of the three images to be formed on the dielectric sheet.
Inventors
- 👤 Christopher Snelling
- 👤 Myron J. Lenhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:05
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
213 words
A multi-mode electrostatographic printing machine including: a photoconductive member; a dielectric member having a substrate coated with a layer of material capable of retaining an electrostatic latent image; means for transporting said dielectric member along a path of travel which positions said dielectric member closely adjacent to said photoconductive member; means for charging at least a portion of said photoconductive member to a substantially uniform level; means for irradiating the charged portion of said photoconductive member with a beam of radiation to record a first electrostatic latent image on said photoconductive member; means for transferring the first electrostatic latent image from said photoconductive member to said dielectric member; means positioned along the path of travel of said dielectric member for forming a second electrostatic latent image on said dielectric member; means for depositing particles on said dielectric member to develop the electrostatic latent image; means for moistening said dielectric member to increase the conductivity of said dielectric member prior to said depositing means developing the electrostatic latent image with particles; means for affixing substantially permanently said particles to said dielectric member; and operator selectable means for energizing said charging means, said irradiating means and said forming means simultaneously or energizing either said charging means and said irradiating means or said forming means independently.
Claim 2
Dependent Claim
213 words
A multi-mode electrostatographic printing machine including: a photoconductive member; a dielectric member having a substrate coated with a layer of material capable of retaining an electrostatic latent image; means for transporting said dielectric member along a path of travel which positions said dielectric member closely adjacent to said photoconductive member; means for charging at least a portion of said photoconductive member to a substantially uniform level; means for irradiating the charged portion of said photoconductive member with a beam of radiation to record a first electrostatic latent image on said photoconductive member; means for transferring the first electrostatic latent image from said photoconductive member to said dielectric member; means positioned along the path of travel of said dielectric member for forming a second electrostatic latent image on said dielectric member; means for depositing particles on said dielectric member to develop the electrostatic latent image; means for moistening said dielectric member to increase the conductivity of said dielectric member prior to said depositing means developing the electrostatic latent image with particles; means for affixing substantially permanently said particles to said dielectric member; and operator selectable means for energizing said charging means, said irradiating means and said forming means simultaneously or energizing either said charging means and said irradiating means or said forming means independently.
Claim 3
Dependent Claim
56 words
A printing machine as recited in claim 1, wherein said irradiating means includes: a cathode ray tube for generating a light image of an original document being reproduced; and a lens for focusing the light image of the original document onto the charged portion of said photoconductive member for recording the first electrostatic latent image thereon.
Claim 4
Dependent Claim
54 words
A printing machine as recited in claim 1, wherein said irradiating means includes: means for supporting an original document; means for illuminating the original document; and a lens arranged to focus a light image of the original document onto the charged portion of said photoconductive member to record the first electrostatic latent image thereon.
Claim 5
Dependent Claim
71 words
A printing machine as recited in claims 2 or 3, wherein said depositing means includes: a non-magnetic tubular member; means for generating a magnetic field to attract the particles to the exterior surface of said tubular member; and means for producing relative movement between said tubular member and said generating means to advance the particles adhering to said tubular member into contact with the electrostatic latent image on said dielectric member.
Claim 6
Dependent Claim
53 words
An apparatus as recited in claim 4 further comprising: a conductive member for supporting said dielectric member closely adjacent to said photoconductive member; and means for applying an electric field between said photoconductive member and said conductive member to transfer the first electrostatic latent image from said photoconductive member to said dielectric member.
References Cited (Backward Citations)
US3045587A
Cited
US3147679A
Cited
US3666458A
Cited
US3738855A
Cited
US4042962A
Cited
US4026642A
Cited
US4128328A
Cited
US4166691A
Cited
US4124286A
Cited
US4167324A
Cited
US4200389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |