Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2006-10-11
2010-02-16
Luu, Matthew (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
C347S009000, C347S010000, C347S014000
Reexamination Certificate
active
07661785
ABSTRACT:
In an ink jet head driving method for applying a drive pulse to an actuator ACT to change capacities of a plurality of pressure chambers in which ink has been filled, ejecting an ink droplet from a nozzle formed in communication with the pressure chamber to print onto a printing medium, and moreover, controlling the number of ink droplets ejected according to the number of drive pulses to carry out gradation printing, a control is made such that, in the case where the number of ink droplets is small, a boost pulse Pb for amplifying a pressure vibration of the pressure chamber is applied prior to a drive pulse for ejecting a first ink droplet, and in the case where the number of ink droplets is large, applying of the boost pulse Pb is disabled.
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Frishauf Holtz Goodman & Chick P.C.
Lebron Jannelle M
Luu Matthew
Toshiba Tec Kabushiki Kaisha
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