Copying machine for producing margins of constant width

Details Copying machine for producing margins of constant width Copying machine for producing margins of constant width

1986-11-26

1988-05-10

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 8, 355 14SH, G03G 1500

Patent

active

047439475

ABSTRACT:
A copying machine wherein an orginal is exposed to light by the movement of a document table or an optical system to form an electrostatic latent image on a photoconductive drum at an image forming station, and the latent image is developed and then transferred from the drum to copy paper at a transfer station. The machine has a detector for producing an output upon detecting that the optical system has reached a predetermined position subsequent to the starting end of the original during the exposure, a timer for measuring a specified period of time from the time the detector produces the output, and a drive device for initiating a paper transporting device into operation in response to an input from the timer, the distance of transport of the paper from the transporting device to the transfer station being smaller than the distance from the image forming station to the transfer station along the periphery of the drum. A margin of specified width is formed at the leading end of the paper to render the paper transportable through the machine with improved characteristics.

REFERENCES:
patent: 4260241 (1981-04-01), Honma et al.
patent: 4350439 (1982-09-01), Tanioka et al.

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