Prefiring method for an ink-jet head and apparatus having the in

Details Prefiring method for an ink-jet head and apparatus having the in Prefiring method for an ink-jet head and apparatus having the in

1996-01-24

1998-12-15

Wong, Peter S.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 14, 347 35, 347 60, B41J 2165, B41J 2938, B41J 205

Patent

active

058502360

ABSTRACT:
An apparatus having an ink-jet head has a time measuring unit, a recording unit, and a prefiring operation control unit. The time measuring unit is used to measure an elapsed time from execution of prefiring operations for the ink-jet head, and the recording unit is used to record whether or not printing nozzles disposed in the ink-jet head are operated. The prefiring operation control unit determines a number of prefiring operations in accordance with a measurement result obtained by the time measuring unit and operated conditions of the printing nozzles recorded in the recording means, and executes prefiring operations for the ink-jet head. Therefore, the apparatus is capable of executing prefiring operations often enough and sufficient for the actual operated conditions of the printing nozzles disposed in the ink-jet head, and thereby preventing ink from being consumed at enhanced rate by useless prefiring operations.

REFERENCES:
patent: 3925788 (1975-12-01), Kashio
patent: 3925789 (1975-12-01), Kashio
patent: 4540997 (1985-09-01), Biggs et al.
patent: 4558332 (1985-12-01), Takahashi
patent: 4970527 (1990-11-01), Gatten
patent: 5428379 (1995-06-01), Kaneko et al.
patent: 5530461 (1996-06-01), Sakuma
patent: 5710581 (1998-01-01), Barton et al.

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