Pump control mechanism, printer incorporating the same, and...

Incremental printing of symbolic information – Ink jet – Controller

Reexamination Certificate

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Details

C417S032000, C417S412000

Reexamination Certificate

active

07607750

ABSTRACT:
A pump member is cyclically moved to apply an air pressure to a liquid supply source to thereby supply liquid stored therein to a reservoir member. A driving source is driven in accordance with control information to move the pump member. A position sensor senses a position of the pump member. A first storage stores target information indicative of a target driving speed of the driving source. A first calculator obtains drive information indicative of an actual driving speed of the driving source based on the sensed position of the pump member. A second calculator obtains a difference between the target driving speed and the actual driving speed, and obtains correction information for reducing the difference. A corrector corrects the control information with the correction information.

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