Apparatus for forming superimposed images

Details Apparatus for forming superimposed images Apparatus for forming superimposed images

1988-05-19

1990-03-27

Prescott, A. C.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

3461531, 346157, 355202, 355327, G03G 1501

Patent

active

049124919

ABSTRACT:
An image forming apparatus for forming superimposed images includes a plurality of image forming devices each for forming a different image and a registration mark, corresponding to the position of the associated image, on an image transferring medium. The registration mark is formed on a transparent part of the medium and is illuminated from below. A detector above the medium detects the position of the shadow of the registration mark for each image and the result of detection is used to adjust the position of at least one image forming device to produce proper registration between the images formed by the respective image forming devices.

REFERENCES:
patent: 4660059 (1987-04-01), O'Brien
patent: 4816844 (1989-03-01), Uchida et al.
patent: 4819019 (1989-04-01), Egawa et al.
patent: 4821066 (1989-04-01), Foote, Jr. et al.

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