Roll paper feeding apparatus for electrophotographic processing

Details Roll paper feeding apparatus for electrophotographic processing Roll paper feeding apparatus for electrophotographic processing

1987-07-06

1988-04-19

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 16, 355 29, G03G 1500

Patent

active

047393645

ABSTRACT:
The disadvantages derived from a conventional electrophotographic processing machine are that the length of the forward end of the master paper as cut is more than about 600 mm and this increases the amount of loss thereof, thus making the photographic processing expensive. An operation for disposing of the tip of the master paper as wasted paper every time a start switch is depressed requires much labor and renders operability poor. This also requires shifting of the position of the paper tip after cutting upper and lower rolls so that difficulty is involved in carrying out photographic processing simultaneously with such shifting. A roll paper feeding apparatus according to the invention is capable of shortening the tip of the master paper which has to be disposed of as waste at low cost without requiring discharge of the paper tip every time the paper is cut, thus helping the operator. The paper tip is normally positioned on standby such as to make enable photographic processing to be started simultaneously with shifting of the upper and lower rolls.

REFERENCES:
patent: 3820892 (1974-06-01), Boschet
patent: 3951023 (1976-04-01), Ashburner
patent: 4248520 (1981-02-01), Kurita et al.

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