Print head driving apparatus and printing apparatus having the same
AssigneeWoosim System Inc.
InventorsIl Bok Lee, Kwang Il Koo, Jae Kwang Lee
Life of this patent
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Abstract
Disclosed is a print head driving apparatus including: a print head unit having a plurality of heater resistors arranged therein, the plurality of heater resistors being divided into sub groups; a counter configured to sequentially generate code signals corresponding to the sub groups, using a driving clock signal; a driving signal generation unit configured to generate a driving signal for the heater resistors included in each of the sub groups, using the code signal; and a head control unit configured to extract heater resistors to which the driving signal is inputted, among heater resistors corresponding to input image data, and drive the extracted heater resistors.
Claims10
A print head driving apparatus comprising:
- a print head unit having a plurality of heater resistors arranged therein, the plurality of heater resistors being divided into sub groups;
- a counter configured to sequentially generate code signals corresponding to the sub groups, using a driving clock signal;
- a driving signal generation unit configured to generate a driving signal for the heater resistors included in each of the sub groups, using the code signal;
- and
- a head control unit configured to extract heater resistors to which the driving signal is inputted, among heater resistors corresponding to input image data, and drive the extracted heater resistors,
- wherein the code signals comprise a plurality of bits and correspond to unique numbers of said sub groups respectively.
Dependencies are inferred from the claim text.