Feeding timing control for an image forming apparatus

Details Feeding timing control for an image forming apparatus Feeding timing control for an image forming apparatus

1994-03-01

1996-02-06

Ramirez, Nestor R.

Photocopying

Contact printing

Light boxes

355308, 355316, G03G 2100

Patent

active

054899702

ABSTRACT:
According to a paper conveying apparatus and a copying machine of the present invention, when a paper is supplied from a back cassette provided at a position where at least one cassette is provided between a photoconductive drum and the cassette, and a first paper supplied to the photoconductive drum is conveyed to an aligning roller of the copying machine, a second paper sequentially after the first paper arrived at the aligning roller is drawn from the back cassette in advance. Due to this, paper conveying time necessary for conveying the paper is reduced when a continuous copying is performed. If a back edge of the first paper is left on an intermediate aligning roller, that is, the whole length of paper drawn from the back cassette is longer, the second paper is stopped at the position where the second paper is drawn from the back cassette. Therefore, the first paper and second paper can be prevented from being collided with each other, and being overlapped on each other.

REFERENCES:
patent: 5073802 (1991-12-01), Sugiyama
patent: 5221949 (1993-06-01), Miyamoto
patent: 5329345 (1994-07-01), Nagatani et al.

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