US3734607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color reproduction apparatus
Assignee: Xerox Corp
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Filing: 1969-06-04
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Granted: 1973-05-22
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Expires: 1989-06-04
Abstract
Abstract A multi-color electrostatic printing machine having processing components adapted to produce an image for each color of an original being copied, individual color developing units for effecting development of the corresponding images and a program arrangement for coordinating in timed sequence the operation of the processing components and the transfer of each developed image in superimposed relationship upon sheets of paper.
Inventors
- 👤 H Davis
- 👤 H Trumbull
- 👤 C Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:29
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G15/0105; G03G15/0131; G03G15/0142; G03G15/0147; G03G15/0152; G03G15/0163
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
165 words
A multi-color electrostatic printing apparatus for reproducing copies of an original comprising a movable photoconductive member, means for producing a series of side-by-side electrostatic latent images on said member as the same moves, each of which is the result of a different color rendition in the original, development means having a plurality of development units, each development unit being adapted to apply developing material having a different subtractive color for each of the latent images and operative when activated for contacting the member and developing its respective latent image moving relative thereto, programming means associated with the development units for controlling activation of the same individually, at predetermined intervals, and according to the color effect of a unit relative to the latent image produced for the corresponding color rendition in the original, and transfer means for transferring the developed images onto a support material in superimposed relationship, said transfer means adapted to move said support material into and out of contact with said photoconductive member.
Claim 2
Dependent Claim
165 words
A multi-color electrostatic printing apparatus for reproducing copies of an original comprising a movable photoconductive member, means for producing a series of side-by-side electrostatic latent images on said member as the same moves, each of which is the result of a different color rendition in the original, development means having a plurality of development units, each development unit being adapted to apply developing material having a different subtractive color for each of the latent images and operative when activated for contacting the member and developing its respective latent image moving relative thereto, programming means associated with the development units for controlling activation of the same individually, at predetermined intervals, and according to the color effect of a unit relative to the latent image produced for the corresponding color rendition in the original, and transfer means for transferring the developed images onto a support material in superimposed relationship, said transfer means adapted to move said support material into and out of contact with said photoconductive member.
Claim 3
Dependent Claim
218 words
A multi-color electrostatic printing apparatus for reproducing copies of an original comprising a photoconductive member, means for advancing said member sequentially adjacent a plurality of processing stations along a predetermined path, charging means at a first station for applying a uniform charge to said member, exposure means for producing light rays of an original and to form a series of side-by-side electrostatic latent images sequentially on said member as the same moves relative to a second station, each of the images being the result of a different color rendition in the original, development means at a third station having a plurality of development units, each development unit being adapted to provide developing material having a difFerent subtractive color for each of the latent images and operative when activated for contacting the member and developing its respective latent image moving relative thereto, programming means associated with the development units for controlling activation of the same individually, at predetermined intervals and according to the color effect of a unit relative to the latent image produced for the corresponding color rendition in the original, and transfer means at a fourth station for transferring the developed images onto a support material in superimposed relationship, said transfer means adapted to move said support material into and out of contact with said photoconductive member.
Claim 4
Dependent Claim
218 words
A multi-color electrostatic printing apparatus for reproducing copies of an original comprising a photoconductive member, means for advancing said member sequentially adjacent a plurality of processing stations along a predetermined path, charging means at a first station for applying a uniform charge to said member, exposure means for producing light rays of an original and to form a series of side-by-side electrostatic latent images sequentially on said member as the same moves relative to a second station, each of the images being the result of a different color rendition in the original, development means at a third station having a plurality of development units, each development unit being adapted to provide developing material having a difFerent subtractive color for each of the latent images and operative when activated for contacting the member and developing its respective latent image moving relative thereto, programming means associated with the development units for controlling activation of the same individually, at predetermined intervals and according to the color effect of a unit relative to the latent image produced for the corresponding color rendition in the original, and transfer means at a fourth station for transferring the developed images onto a support material in superimposed relationship, said transfer means adapted to move said support material into and out of contact with said photoconductive member.
Claim 5
Independent Claim
118 words
A method for producing multi-color reproductions of an original comprising the steps of: forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member as the same moves along a predetermined path, each of said images corresponding to a light pattern of a different color, developing said images by advancing each image into contact with an applicator for developing material having a subtractive color relative to the color of which the respective image was formed, recirculating support material into contact with the plate member for each developed image in said series, and transferring each developed image upon the support material as the same is moved into contact with the plate member.
Claim 6
Independent Claim
118 words
A method for producing multi-color reproductions of an original comprising the steps of: forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member as the same moves along a predetermined path, each of said images corresponding to a light pattern of a different color, developing said images by advancing each image into contact with an applicator for developing material having a subtractive color relative to the color of which the respective image was formed, recirculating support material into contact with the plate member for each developed image in said series, and transferring each developed image upon the support material as the same is moved into contact with the plate member.
Claim 7
Independent Claim
119 words
A method for producing multi-color reproductions of an original comprising the steps of: sequentially forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member as the same moves along a predetermined path, each of said images corresponding to a light pattern of a different color, sequentially developing said images by advancing each image into contact with an applicator for developing material having a subtractive color relative to the color of which the respective image was formed, recirculating support material into contact with the plate member for each developed image in said series, and transferring each developed image upon the support material as the same is moved into contact with plate member.
Claim 8
Independent Claim
119 words
A method for producing multi-color reproductions of an original comprising the steps of: sequentially forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member as the same moves along a predetermined path, each of said images corresponding to a light pattern of a different color, sequentially developing said images by advancing each image into contact with an applicator for developing material having a subtractive color relative to the color of which the respective image was formed, recirculating support material into contact with the plate member for each developed image in said series, and transferring each developed image upon the support material as the same is moved into contact with plate member.
Claim 9
Independent Claim
128 words
A method for producing multi-color reproductions of an original comprising the steps of: forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member as the same moves along a predetermined path, each of said images corresponding to a light pattern of a different color, moving said series of images adjacent a plurality of developing units each of which is adapted when activated to apply developing material to one of the images in said series, the developing material for each unit having a subtractive color relative to the color of the image being affected thereby, and activating said units in accordance with the movement of each latent image into a position adjacent the development unit associated therewith to be developed thereby.
Claim 10
Independent Claim
128 words
A method for producing multi-color reproductions of an original comprising the steps of: forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member as the same moves along a predetermined path, each of said images corresponding to a light pattern of a different color, moving said series of images adjacent a plurality of developing units each of which is adapted when activated to apply developing material to one of the images in said series, the developing material for each unit having a subtractive color relative to the color of the image being affected thereby, and activating said units in accordance with the movement of each latent image into a position adjacent the development unit associated therewith to be developed thereby.
Claim 11
Dependent Claim
26 words
The method of claim 5 including the step of transferring the developed images directly to a support material in superimposed relationship and in a single operation.
Claim 12
Independent Claim
96 words
A method for producing multi-color reproductions of an original comprising the steps of: sequentially forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member adapted for movement along a predetermined path, each of said images corresponding to a light pattern of a different color, sequentially developing said images by advancing each image into contact with an applicator for developing material having a subtractive color relative to the color of which the respective image was formed, and sequentially transferring the developed images to a support material in superimposed relationship.
Claim 13
Independent Claim
96 words
A method for producing multi-color reproductions of an original comprising the steps of: sequentially forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member adapted for movement along a predetermined path, each of said images corresponding to a light pattern of a different color, sequentially developing said images by advancing each image into contact with an applicator for developing material having a subtractive color relative to the color of which the respective image was formed, and sequentially transferring the developed images to a support material in superimposed relationship.
Claim 14
Dependent Claim
37 words
The method of claim 7 wherein said step of sequentially forming said series of images includes the step of iLluminating the original full-frame and by flash type illumination while the plate member is moving along said path.
Claim 15
Independent Claim
160 words
A method for producing multi-color reproductions of an original comprising the steps of: sequentially forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member as the same moves along a predetermined path, each of said images corresponding to a light pattern of a different color, sequentially developing said images by advancing each image into contact with an applicator for developing material having a subtractive color relative to the color of which the respective image was formed, introducing a sheet of support material into a closed path of movement and at a predetermined position in this path, moving the sheet in said closed path and in contact with the plate member once for each developed image in said series wherein orientation of the sheet relative to each developed image will be the same, and transferring each developed image upon the support material as the same is moved into contact with the plate member.
Claim 16
Independent Claim
160 words
A method for producing multi-color reproductions of an original comprising the steps of: sequentially forming a series of electrostatic latent images of the original on the surface of a photoconductive plate member as the same moves along a predetermined path, each of said images corresponding to a light pattern of a different color, sequentially developing said images by advancing each image into contact with an applicator for developing material having a subtractive color relative to the color of which the respective image was formed, introducing a sheet of support material into a closed path of movement and at a predetermined position in this path, moving the sheet in said closed path and in contact with the plate member once for each developed image in said series wherein orientation of the sheet relative to each developed image will be the same, and transferring each developed image upon the support material as the same is moved into contact with the plate member.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |