Copier machines

Details Copier machines Copier machines

1987-07-08

1988-05-17

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3CH, 355 14R, 355 14D, G03G 1500

Patent

active

047454377

ABSTRACT:
The copier machine of the present invention comprises a second charger having a grid and is capable of executing a mode wherein a toner is deposited onto the latent image exclusive of the outline portion thereof to visualize.
When this mode is designated, the grid is applied with the voltage which is lower than the surface potential at the image portion of the latent image and higher than the surface potential at the non-image portion of the latent image.

REFERENCES:
patent: 3967891 (1976-07-01), Rippstein
patent: 4346982 (1982-08-01), Nakajima et al.
patent: 4480909 (1984-11-01), Tsuchiya
patent: 4618249 (1986-10-01), Minor
patent: 4636060 (1987-01-01), De Schamphelaere et al.

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