US3738744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viewer printer apparatus
Assignee: Xerox Corp
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Filing: 1970-09-18
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Granted: 1973-06-12
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Expires: 1990-09-18
Abstract
Abstract Combination viewing and printing apparatus characterized by the capability of: producing a positive print from either a negative or a positive input film; printing on plain sheet paper which is fed from the apparatus at an optimum location; selecting the information to be printed from a microfilm transported by means of a differential drive arrangement which optimizes the film movement; accommodating various types of recording media, for example roll microfilm and microfiche; and presenting a plurality of image formats to the viewing screen and a recording media in a predetermined orientation convenient for viewing and printing.
Inventors
- 👤 J Cassano
- 👤 C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:04
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/221; G03G15/223
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
141 words
A copier comprising: housing structure; an electrostatic charging station in said housing structure; an exposure station; a liquid developing station in said housing structure; means for moving a photoconducting insulating member sequentially past said charging, exposure and developing stations; means for stopping said photoconducting insulating member at said exposure station while an electrostatic image is formed thereon; a developer applicator and means for causing said applicator to move into engagement with said photoconducting member as it passes said developing station; means for effecting movement of said photoconducting member past said developing station in a reverse direction; an image transfer station; means for transferring a developed image to an image-receiving surface, said transfer means being effected simultaneously with movement of said photoconducting member in said reverse direction, and means for maintaining disengagement of said applicator from said photoconducting member during image transfer.
Claim 2
Dependent Claim
141 words
A copier comprising: housing structure; an electrostatic charging station in said housing structure; an exposure station; a liquid developing station in said housing structure; means for moving a photoconducting insulating member sequentially past said charging, exposure and developing stations; means for stopping said photoconducting insulating member at said exposure station while an electrostatic image is formed thereon; a developer applicator and means for causing said applicator to move into engagement with said photoconducting member as it passes said developing station; means for effecting movement of said photoconducting member past said developing station in a reverse direction; an image transfer station; means for transferring a developed image to an image-receiving surface, said transfer means being effected simultaneously with movement of said photoconducting member in said reverse direction, and means for maintaining disengagement of said applicator from said photoconducting member during image transfer.
Claim 3
Dependent Claim
33 words
A copier according to claim 1, including a viewing screen, and means for projecting an image thereto; and means for selectively projecting said image to said photoconducting member and producing a copy thereof.
Claim 4
Dependent Claim
36 words
A copier according to claim 1, further comprising means supported by the front wall of said housing structure for selectively conditioning said developer applicator for development of charged or non-charged areas of said photoconducting insulating member.
Claim 5
Dependent Claim
43 words
A copier according to claim 3, wherein said conditioning means comprises a relay actuated switch for connecting a source of electrical power to said applicator for applying a voltage thereto greater than the voltage exhibited by the charged areas of the photoconducting member.
Claim 6
Dependent Claim
26 words
A copier according to claim 4, further comprising means for selectively conditioning said developer applicator for development of charged or non-charged areas of said photoconducting member.
Claim 7
Dependent Claim
33 words
A copier according to claim 5, including a viewing screen and means for projecting an image thereto, and means for selectively projecting said image to said photoconductive means for producing a copy thereof.
Claim 8
Dependent Claim
14 words
A copier according to claim 1 wherein said photoconducting member comprises a single-use photoreceptor.
Claim 9
Dependent Claim
35 words
A copier according to claim 7, including control means for moving said web a greater distance during developing than during image transfer thereby minimizing the amount of web material used for each cycle of operation.
Claim 10
Dependent Claim
40 words
A copier according to claim 8, wherein said control means comprises: a stepper switch; a pulse generating relay for actuating said stepper switch; and a pair of cam actuated switches operably connecting said stepper switch and said pulse generating relay.
Claim 11
Dependent Claim
32 words
A copier according to claim 9 wherein, said means for moving said web comprises a reversible motor, and further including means for insuring complete stoppage of said motor before reverse operation thereof.
Claim 12
Dependent Claim
134 words
Viewer-printer apparatus comprising: housing structure; a screen supported by said housing structure; a photoconducting insulating member; means for supporting said photoconducting insulating member in said housing structure; means for placing a uniform electrostatic charge on said photoconducting member; means for projecting either positive or negative images onto said screen for viewing thereof or onto said photoconducting member for forming a latent electrostatic image thereon; means for pResenting developer material to said photoconducting insulating member; and means for selectively conditioning said developer presenting means for forming a positive image regardless of the image projected, said means for selectively conditioning said developer presenting means comprising means for connecting a source of electrical power to said means for presenting developer, for applying a voltage thereto greater than the voltage exhibited by the charges forming the latent image.
Claim 13
Dependent Claim
134 words
Viewer-printer apparatus comprising: housing structure; a screen supported by said housing structure; a photoconducting insulating member; means for supporting said photoconducting insulating member in said housing structure; means for placing a uniform electrostatic charge on said photoconducting member; means for projecting either positive or negative images onto said screen for viewing thereof or onto said photoconducting member for forming a latent electrostatic image thereon; means for pResenting developer material to said photoconducting insulating member; and means for selectively conditioning said developer presenting means for forming a positive image regardless of the image projected, said means for selectively conditioning said developer presenting means comprising means for connecting a source of electrical power to said means for presenting developer, for applying a voltage thereto greater than the voltage exhibited by the charges forming the latent image.
Claim 14
Dependent Claim
13 words
A viewer-printer according to claim 11 wherein said developer material comprises a liquid.
Claim 15
Dependent Claim
16 words
A viewer-printer according to claim 12 including means for transferring an image to an image-receiving surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |