Alignment apparatus

Details Alignment apparatus Alignment apparatus

1982-02-23

1984-03-20

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

355 53, 355 75, 356401, G03B 2752

Patent

active

044377584

ABSTRACT:
An alignment apparatus effects positional adjustment between the image of a mask and a sensitive member by using a non-sensitive alignment mark image of the mask and an alignment mark formed on the sensitive member. The sensitive alignment mark image of the mask is formed on the alignment mark portion of the sensitive member in out-of focus condition. The alignment mark portion of the sensitive member is exposed by the sensitive mark image. Accordingly, the alignment mark of the sensitive member is protected.

REFERENCES:
patent: 3718396 (1973-02-01), Hennings
patent: 3844655 (1974-10-01), Johannsmeier
patent: 4070117 (1978-01-01), Johannsmeier et al.

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