EP0037248A2
Expired / Lapsed
EP
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Method and device for recycling developing material
Assignee: Kyocera Mita Industrial Co Ltd
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Filing: 1981-03-25
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Granted: —
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Expires: 2001-03-25
Abstract
Abstract A method and device for recycling a residual developing material on a photosensitive material after transfer step in an electrostatic copying apparatus wherein there is provided a blade member (12) capable of sliding to contact with and separating from the photosensitive material (2) upstream with respect to a corona charger (4) for charging the photosensitive material (2) before exposuring step along the moving direction of the photosensitive material (2). The blade member (12) slides to contact with the photosensitive material (2) during the time when a latent image is formed onto the photosensitive material (2) in a developing step, and separates from the photosensitive material (2) during the time when the latent image is not formed in the copying operation. The developing material accumulated on the photosensitive material (2) by means of the blade member (12) in the exposuring step travels to be stored at a developing device (6) according to the movement of the photosensitive material (2).
Inventors
- 👤 Tadanobu Nakajima
- 👤 Masahide Iseki
- 👤 Hiroshi Kajita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:19
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/10; G03G21/0005; G03G21/0011; G03G21/0029
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
173 words
A method for recycling a residual developing material of a photosensitive material (2) after transfer step of copying operation in an electrostatic copying apparatus comprising the steps of ; providing a blade member (12) capable of sliding to contact with and separating from the photosensitive material (2) upstream with respect to a corona charger (4) for charging the photosensitive material(2) before an exposure step along the travelling direction of the photosensitive material (2), and driving the blade member (12) to slide to contact with the photosensitive material (2) during the time when a latent image is formed onto the photosensitive material(2) in an exposure step, and to separate from the photosensitive material (2) during the time when the latent image is not formed in the other steps of the copying operation, thereby the photosensitive material (2) moves to allow the developing material accumulated on the photosensitive material (2) by means of the blade member (12) to reach and to be stored in a developing device (6) when a latent image is not formed.
Claim 2
Independent Claim
173 words
A method for recycling a residual developing material of a photosensitive material (2) after transfer step of copying operation in an electrostatic copying apparatus comprising the steps of ; providing a blade member (12) capable of sliding to contact with and separating from the photosensitive material (2) upstream with respect to a corona charger (4) for charging the photosensitive material(2) before an exposure step along the travelling direction of the photosensitive material (2), and driving the blade member (12) to slide to contact with the photosensitive material (2) during the time when a latent image is formed onto the photosensitive material(2) in an exposure step, and to separate from the photosensitive material (2) during the time when the latent image is not formed in the other steps of the copying operation, thereby the photosensitive material (2) moves to allow the developing material accumulated on the photosensitive material (2) by means of the blade member (12) to reach and to be stored in a developing device (6) when a latent image is not formed.
Claim 3
Independent Claim
172 words
A device for recycling a residual developing material on a photosensitive material (2) after transfer step of copying operation in an electrostatic copying apparatus comprising ; a blade member (12) capable of sliding to contact with and separating from the photosensitive material (2) upstream with respect to a corona charger for charging the photosensitive material (2) before an exposure step along the rotational direction of the photosensitive material (2), and means for driving the blade member (12) to slide to contact with the photosnsitive material (2) during the time when a latent image is formed onto the photosensitive material (2) in an exposure step, and to separate from the photosensitive material (2) during the time when the latent image is not formed in the other steps of the copying operation, thereby the photosensitive material (2) moves to allow the developing material accumulated on the photosensitive material (2) by means of the blade member (12) to reach and to be stored in a developing device (6) when a latent image is not formed.
Claim 4
Independent Claim
172 words
A device for recycling a residual developing material on a photosensitive material (2) after transfer step of copying operation in an electrostatic copying apparatus comprising ; a blade member (12) capable of sliding to contact with and separating from the photosensitive material (2) upstream with respect to a corona charger for charging the photosensitive material (2) before an exposure step along the rotational direction of the photosensitive material (2), and means for driving the blade member (12) to slide to contact with the photosnsitive material (2) during the time when a latent image is formed onto the photosensitive material (2) in an exposure step, and to separate from the photosensitive material (2) during the time when the latent image is not formed in the other steps of the copying operation, thereby the photosensitive material (2) moves to allow the developing material accumulated on the photosensitive material (2) by means of the blade member (12) to reach and to be stored in a developing device (6) when a latent image is not formed.
Claim 5
Dependent Claim
40 words
A device as claimed in claim 2 characterised in that the photosensitive material (2) is coated on a surface of a drum (1) which is driven to rotate, the blade member (12) is situated almost right above the drum (1).
Claim 6
Dependent Claim
76 words
A device as claimed in claim 2 characterised in that the photosensitive material (2) is coated on a surface of a drum (1) which is driven to rotate, the blade member (12) is situated at a position where the developing material accumulated by means of the blade member (12) does not drop from the photosensitive material (2) downstream along the rotational direction of the drum (1) with respect to a position right above the drum (1).
References Cited (Backward Citations)
No citation records indexed.
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