Serial printer which performs an initializing operation after a

Details Serial printer which performs an initializing operation after a Serial printer which performs an initializing operation after a

1995-11-16

1998-07-21

Wong, Peter S.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 5, B41J 2165, B41J 2938

Patent

active

057840806

ABSTRACT:
A serial printer includes a printing unit for carrying a print head, a DC power unit for generating a DC drive voltage to drive a carriage motor of the printing unit, and a control unit for performing an initializing operation. In this initializing operation, the print head is moved in reciprocal directions when the initialization request signal from the host apparatus is received by the printer, but only after the elapse of a waiting time corresponding to an attenuating period of the DC voltage. This control sequence avoids the performance of an initializing operation by the printer when the initialization request signal has been issued by the host apparatus as the DC voltage is attenuating, such as when power is being shut off, so that the printer would remain engaged for an insufficient time to complete the initializing operation.

REFERENCES:
patent: 4926196 (1990-05-01), Mitzoguchi et al.
patent: 5341163 (1994-08-01), Hanabusa
patent: 5359358 (1994-10-01), Shimamura et al.
patent: 5475404 (1995-12-01), Takahashi et al.

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