Photocopying – Projection printing and copying cameras – Methods
Patent
1989-05-10
1991-06-18
Hayes, Monroe H.
Photocopying
Projection printing and copying cameras
Methods
356374, 356376, G03B 2732
Patent
active
050252852
ABSTRACT:
A shadow Moire grille may be inexpensively produced by enlarging the lines of a master grille on an adjacently positioned photoreproduction MYLAR strip. By varying the ratio of magnification, the line density on the MYLAR strip may be quickly and accurately created. The created MYLAR grille is then vertically positioned against an abutting glass plate; and by evacuating the space therebetween, the MYLAR grille will maintain a vertical planar orientation as needed in a shadow Moire set-up.
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Grumman Aerospace Corporation
Hayes Monroe H.
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