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US 5,701,816 AGranted
Heat-sensitive type mimeographic screen forming apparatus
AssigneeGraphtec Corporation
InventorsYuichi Fujiwara, Chikao Nakagawa, Hiromi Ito, Yoshinori Kobayashi
Life of this patent
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Abstract
A heat-sensitive type mimeographic screen forming apparatus includes: a long thermal head which covers a screen fabric spread on a screen fabric frame in its entirety; and a platen which is brought into contact with the thermal head through the screen fabric. Depending on the width of a screen fabric frame to be used, the platen is replaced with another suitable one, or changed in width.
Claims6
A heat-sensitive type mimeographic screen forming apparatus, comprising:
- a screen fabric frame;
- a screen fabric spread on said screen fabric frame;
- a platen which corresponds in length to an inside width of said screen fabric frame;
- a thermal head for selectively heating said screen fabric supported by said platen to form a mimeographic screen according to an image signal;
- means for supporting said thermal head which corresponds in length to the width of said screen fabric spread on said screen fabric frame, in such a manner that said thermal head is confronted with said screen fabric spread on said screen fabric frame;
- means for supporting said platen, in such a manner that said platen pushes said screen fabric upwardly which is spread on said screen fabric frame, so that a top portion of said screen fabric thus pushed upwardly is brought into contact with a heat generation part of said thermal head;
- means for relatively moving said thermal head and said platen in synchronization with respect to said screen fabric held between them;
- and
- means for driving said thermal head and said moving means for forming said mimeographic-screen according to signals from an image holding device.
6 more elements
Dependencies are inferred from the claim text.