Method and device for the mutual alignment of a film and a print

Details Method and device for the mutual alignment of a film and a print Method and device for the mutual alignment of a film and a print

1995-05-10

1997-07-01

Rosasco, S.

Radiation imagery chemistry: process, composition, or product th

Registration or layout process other than color proofing

430 30, 430311, 101481, 101485, 428901, G03F 900

Patent

active

056436998

ABSTRACT:
A method and apparatus are provided for the mutual alignment of a film and a printed circuit board prior to printing of the printed circuit board. At least two cameras are used to optically register the respective position of a marker on the film in relation to a respectively associated reference marker on the printed circuit board. In the event of a deviation or deviations from a set position, the relative position of the printed circuit board to the film is corrected within a tolerance range. At least two markers and associated reference markers are registered simultaneously with at least one camera. Preferably, the markers and the associated reference markers are each respectively arranged in squares of groups of nine and each of the groups is registered by one camera.

REFERENCES:
patent: 5388517 (1995-02-01), Levien

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