Driving method of an ink-jet head

Details Driving method of an ink-jet head Driving method of an ink-jet head

1998-12-17

2000-08-22

Barlow, John

Incremental printing of symbolic information

Ink jet

Controller

347 68, B41J 2938, B41J 2045

Patent

active

061060925

ABSTRACT:
In a multi-drop system, a drive pulse voltage for increasing a volume of an ink chamber is applied for a time of AL, a drive pulse voltage for decreasing the volume of the ink chamber is subsequently applied for a time of 2AL, application of the drive pulse voltage is thereafter paused for a time of AL, and the same timing operation is thereafter repeated again to perform emission of an ink drop a plurality of times, where AL is a time required for a pressure wave in an ink chamber to be transmitted from an end to the other end in the ink emission direction. The drive pulse voltage for emitting a last ink drop forming a part of a one-dot liquid drop is applied for a time of 2AL, application of the drive pulse voltage is thereafter paused for a time of AL, and a dumping pulse voltage is thereafter applied in a direction in which the volume of the ink chamber is decreased.

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