Color image recording apparatus with mask member registering mec

Details Color image recording apparatus with mask member registering mec Color image recording apparatus with mask member registering mec

1989-09-11

1990-10-30

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Multicolor picture

355 88, 355 27, G03B 2732, G03B 2752

Patent

active

049672274

ABSTRACT:
A color image recording device for forming a mask member having a positioning mask thereon and exposing a photosensitive medium through the mask member to light to form a color image on the photosensitive medium, comprising belt for carrying the mask member thereon, two belt supporting rollers spaced at an interval and independently movable in a feeding direction of the mask member and in a vertical direction thereto, stepping motors for moving the belt supporting rollers, a sensor for detecting the position of the positioning mark and a control unit for controlling the stepping motors to register the mask member. According to one aspect of this invention, the stepping motors are controlled by the control unit to change a feeding speed of the mask member at two or more stages in accordance with an output signal from the sensor by switching the excited phases of the stepping motors or by changing an electric power supplied to at least one of the stepping motors.

REFERENCES:
patent: 4147428 (1979-04-01), Nishikawa et al.
patent: 4264192 (1981-04-01), Robb
patent: 4325631 (1982-04-01), McCullion
patent: 4385828 (1983-05-01), Prentice
patent: 4626097 (1986-12-01), Uchida
patent: 4821078 (1989-04-01), Nishida et al.

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