Incremental printing of symbolic information – Electric marking apparatus or processes – Electrostatic
Patent
1997-04-23
1998-09-01
Smith, Matthew S.
Incremental printing of symbolic information
Electric marking apparatus or processes
Electrostatic
347112, 347142, B41J 239, B41J 2395
Patent
active
058017410
ABSTRACT:
An electrostatic recording apparatus 1 for forming an electrostatic image on an electric charge carrying member 2 includes a photoelectric transfer member 14, a pair of bias electrodes 12, 13, an electric power supply 17, a floating electrode 16 and an exposure means 8. The photoelectric transfer member 14 which generates carrier when being exposed to light is interposed between the bias electrodes 12, 13. One of the bias electrodes 12 is transparent. The electric power supply 17 applies a voltage between the bias electrodes 12, 13. The floating electrode 16 has a first area which comes into contact with the photoelectric transfer member 14 and a second area which is opposed to the electric charge carrying member 2. The floating electrode 16 is in no electrical connection with the bias electrodes 12, 13. The exposure means 8 exposes the photoelectric transfer member 14 through the transparent bias electrode 12 so that a carrier is generated in the photoelectric transfer member 14, thereby an electric discharge is caused from the second area of the floating electrode 16 to the electric charge carrying member 2 to form an electrostatic image on the electric charge carrying member 2.
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Minolta Co. , Ltd.
Smith Matthew S.
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