B - Operations – Transporting – 41 – C
Patent
B - Operations, Transporting
41
C
B41C 1/02 (2006.01) B44B 3/00 (2006.01) H04N 1/387 (2006.01)
Patent
CA 2072248
ABSTRACT OF THE DISCLOSURE An engraving method is switched from line engraving to dot engraving (or vice versa) at a boundary line at every horizontal scanning by generating and controlling switching signals by means of an engraving discrimination plate. An engraving is performed while a sweeping operation is being performed in a direction (X direction) substantially parallel to a long side of a portion of a card requiring engraving. Since the number of horizontal sweepings are reduced considerably in comparison with the conventional method, the time required for engraving can be shortened. Since the number of vibrations of the engraving table, which are the biggest obstacle for achieving light weight, is reduced in accordance with the reduction in the number of the above- described horizontal sweepings, the engraving table can be produced more light in weight. As a result, a higher speed of the movement of the engraving table can be achieved, thus making it possible to further shorten the time required for engraving.
E.p.c. Technology Co. Ltd.
Marks & Clerk
LandOfFree
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