US4042962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite information operating method and apparatus
Assignee: Canon Inc
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Filing: 1975-08-26
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Granted: 1977-08-16
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Expires: 1995-08-26
Abstract
Abstract A composition information operating apparatus and a method of recording composite information, the apparatus utilizing an endless rotatable photosensitive member, components for forming an electrostatic latent image of an original on the member, an electrostatic recording head and a separate charge detecting scanner and transmission head while the method includes the steps of first forming an electrostatic latent image of the original, then forming a further electrostatic latent image with the recording head and detecting and transmitting the electrostatic latent image on the photosensitive member with the charge detecting scanner and transmission head, the entire process being performed during a single rotation of the photosensitive member.
Inventors
- 👤 Keizo Yamaji
- 👤 Akira Kurahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:50
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/04; G03G15/04018; G03G15/22; H; H04; H04N; H04N1/00; H04N1/00127; H04N1/00249; H04N1/00254
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
158 words
A method of recording composition information on an endless photosensitive member as said member is rotated, wherein said member is incorporated into a device further including means for charging said member, means for supporting an original to be copied, optical means between the supporting means and said member for projecting a light image of the original onto said member, an electrostatic recording head, and a separate charge detecting scanner and transmission head, said method comprising the steps of first uniformly charging a portion of said member with said charging means, then forming an electrostatic latent image of the original on said portion with said optical means, then forming a further electrostatic latent image on said portion from information received by said recording head, and detecting and transmitting the electrostatic latent images formed on said portion with said charge detecting scanner and transmission head, wherein all of the method stops are completed during a single rotation of said member.
Claim 2
Independent Claim
158 words
A method of recording composition information on an endless photosensitive member as said member is rotated, wherein said member is incorporated into a device further including means for charging said member, means for supporting an original to be copied, optical means between the supporting means and said member for projecting a light image of the original onto said member, an electrostatic recording head, and a separate charge detecting scanner and transmission head, said method comprising the steps of first uniformly charging a portion of said member with said charging means, then forming an electrostatic latent image of the original on said portion with said optical means, then forming a further electrostatic latent image on said portion from information received by said recording head, and detecting and transmitting the electrostatic latent images formed on said portion with said charge detecting scanner and transmission head, wherein all of the method stops are completed during a single rotation of said member.
Claim 3
Dependent Claim
45 words
A method according to claim 1, wherein said device further includes means for developing a latent image and further including the step of developing the electrostatic latent images formed on said portion with said developing means once said latent images have been detected and transmitted.
Claim 4
Dependent Claim
60 words
A method according to claim 1, wherein said endless photosensitive member includes a dielectric layer, a photoconductive layer and an electrically conductive base layer, further comprising the step of applying a corona discharge to a portion of the dielectric layer while simultaneously forming said electrostatic latent image of said original on said portion of said member with the optical means.
Claim 5
Independent Claim
177 words
A method of recording composite information on an endless photosensitive member as said member is rotated, wherein said member in incorporated into a device further including means for charging said member, means for supporting an original to be copied, optical means between the supporting means and said member for projecting a light image of the original onto said member, an electrostatic recording head, means for developing a latent image, and a separate charge detecting scanner and transmission head, said method comprising the steps of first uniformly charging a portion of said member with said charging means, then forming an electrostatic latent image of the original on said portion with said optical means, then forming a further electrostatic latent image on said portion from information received by said recording head, then developing the electrostatic latent images formed on said portion with said developing means and then detecting and transmitting the developed images on said portion with said charge detecting scanner and transmission head, wherein all of the method steps are completed during a single rotation of said member.
Claim 6
Independent Claim
177 words
A method of recording composite information on an endless photosensitive member as said member is rotated, wherein said member in incorporated into a device further including means for charging said member, means for supporting an original to be copied, optical means between the supporting means and said member for projecting a light image of the original onto said member, an electrostatic recording head, means for developing a latent image, and a separate charge detecting scanner and transmission head, said method comprising the steps of first uniformly charging a portion of said member with said charging means, then forming an electrostatic latent image of the original on said portion with said optical means, then forming a further electrostatic latent image on said portion from information received by said recording head, then developing the electrostatic latent images formed on said portion with said developing means and then detecting and transmitting the developed images on said portion with said charge detecting scanner and transmission head, wherein all of the method steps are completed during a single rotation of said member.
Claim 7
Dependent Claim
60 words
A method according to claim 4, wherein said endless photosensitive member includes a dielectric layer, a photoconductive layer and an electrically conductive base layer, further comprising the step of applying a corona discharge to a portion of the dielectric layer while simultaneously forming said electrostatic latent image of said original on said portion of said member with the optical means.
References Cited (Backward Citations)
US3681527A
Cited
US3597071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |