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US 6,663,209 B2Granted
Printing apparatus and method of controlling power supply thereof
AssigneeCanon Kabushiki Kaisha
InventorTakashi Yoshida
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AssigneeCanon Kabushiki Kaisha
InventorTakashi Yoshida
Estimating the term…
Disclosed is a printing apparatus that is capable of stable printing even when the number of printing elements driven simultaneously varies. The printing apparatus includes an input data processor for expanding compressed print data, which has been transmitted from a host device, and outputting a print code sequence; a heat-data generator for generating and outputting heat data, which corresponds to each heater, every heat cycle based upon the print code sequence, and simultaneously counting the number of dots of ink discharged at the same time and outputting a power supply selection signal; a multiple power supply circuit for outputting three different voltages; and a power supply selector which, in accordance with the selection signal [SL (1:0)], selects heater driving power from among the three different voltages and outputs the selected power to a printhead.
A printing apparatus for performing printing on a print medium by scanning a carriage for mounting a printhead having a plurality of printing elements, comprising:
A method of controlling a power supply of a printing apparatus, wherein the printing apparatus performs printing on a print medium by scanning a carriage for mounting voltage generating means, power supply selection means and a printhead having a plurality of printing elements, said method comprising:
A storage medium storing code of a program for implementing a method of controlling a power supply of a printing apparatus, wherein the printing apparatus performs printing on a print medium by scanning a carriage for mounting voltage generating means, power supply selection means and a printhead having a plurality of printing elements, said program comprising:
Dependencies are inferred from the claim text.