Copying machine

Details Copying machine Copying machine

1986-03-13

1987-04-14

Moses, R. L.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 3R, 355 14R, G03G 1504, G03G 2100, G03B 2752

Patent

active

046573801

ABSTRACT:
A copying machine wherein a magnification ratio can be changed substantially continuously within a predetermined range, comprising means for setting a longitudinal magnification ratio of a copied image against an original and a lateral magnification ratio of a copied image against the original independently, image shifting means for shifting an image projected on a photosensitive drum in a direction away from a paper separation belt, first calculating means for calculating a lateral magnification factor, second calculating means for calculating a longitudinal magnification factor, and means for modifying the longitudinal and lateral copy magnification ratios respectively using the selected magnification ratio, the longitudinal and lateral magnification factors, whereby an image can be formed on the copy paper, preventing image drop out.

REFERENCES:
patent: 3445161 (1969-05-01), Moss
patent: 3543643 (1985-09-01), Shibazaki et al.
patent: 4187024 (1980-02-01), Satomi et al.
patent: 4505579 (1985-03-01), Furuichi
patent: 4533233 (1985-08-01), Kimura et al.

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