Mask and mask supporting mechanism

Details Mask and mask supporting mechanism Mask and mask supporting mechanism

1997-01-31

1998-10-20

Metjahic, Safet

Photocopying

Projection printing and copying cameras

Detailed holder for original

355 72, G03B 2762

Patent

active

058254633

ABSTRACT:
A mask and a mask supporting mechanism wherein the outside periphery of a mask frame, having a rectangular shape, which supports the mask, is supported at three supporting points which are substantially the same distance from the center line of a mask membrane, whereby the mask frame is positioned with respect to X, Y and .theta. directions. Two pressing mechanisms press the mask frame at two points substantially opposed to two of the supporting points. The mask is supported at three points on the bottom surface thereof for positioning in the Z direction.

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