Print size adjusting method

Details Print size adjusting method Print size adjusting method

1989-06-01

1990-07-03

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Methods

355 29, 355 74, G03B 2900, G03B 2732

Patent

active

049395394

ABSTRACT:
A method of making a print by the use of a photographic printer in which a variable masking frame is changed in size by a pulse motor and a photographic paper is transported by a pulse motor. When taking .alpha..sub.c, .alpha..sub.p, K1 and K2, and P.sub.fo for a correction value common to all print sizes, a correction value for a specific print size, a constant, and a number of drive pulses obtained by dividing an acutally transported distance of the photographic paper by a distance d.sub.f of transportation per one pulse, respectively, the corrected number of drive pulses P.sub.f applied to the pulse motor for controlling the photographic paper is obtained by calculating the following expression:

REFERENCES:
patent: 4576469 (1986-03-01), Shiga et al.
patent: 4605300 (1986-08-01), Thaddey
patent: 4618251 (1986-10-01), Yanagawa et al.
patent: 4745442 (1988-05-01), Oshikoshi et al.
patent: 4806983 (1989-02-01), Satou
patent: 4837601 (1989-06-01), Nakane et al.
patent: 4857962 (1989-08-01), Satou

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