Automatic masking device for use in a printer
AssigneeDainippon Screen Seizo Kabushiki Kaisha
InventorsYoshikazu Kimura, Kenziro Tanabe, Hiroyuki Yonehara
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Abstract
An automatic masking device for use in a printer, wherein a reproduction picture to be projected onto a photosensitive film sheet mounted on a holder is masked by a pair of masking plates which are separated at a certain distance away from the surface of the photosensitive film sheet, and are adapted to be movable over the surface of the film sheet so as to open and close the opening distance between the masking plates, and wherein the opening distance between the masking plates is settled by moving the masking plates depending on an magnification and a size of the reproduction picture.
Claims7
An automatic masking device for use in a printer, comprising:
- (a) a photosensitive film sheet holder on which a photosensitive film sheet is to be held;
- and
- (b) a pair of masking plates which are separated at a certain distance away from the surface of the holder, and are adapted to be movable over the surface of the holder so as to open and close the opening distance between the masking plates, the opening distance between said masking plates being a function of the size of a reproduction picture to be projected onto the photosensitive film sheet on the holder, the magnification of the projected picture reproduction and the distance between said masking plates and said photosensitive film sheet holder.
Dependencies are inferred from the claim text.