06752485 is referenced by 10 patents and cites 8 patents.

An ink-jet printing apparatus and suction recovery control method which can minimize reduction in throughput while maintaining a printhead in the most appropriate condition, and can reduce the amount of wasted ink. According to the suction recovery control method, a printing period of predetermined printing operation is timed, and the number of print dots formed by discharging ink from a printhead during the predetermined printing operation is counted. Based on the timed printing period and counted number of print dots, the number of print dots per unit time is calculated. Then based on the calculated number of print dots per unit time, timing of suction recovery operation is determined, and suction recovery operation of the printhead is performed according to the determined timing.

Title
Printing apparatus and suction recovery control method
Application Number
10/351417
Publication Number
6752485 (B2)
Application Date
January 27, 2003
Publication Date
June 22, 2004
Inventor
Masaya Uetsuki
Yokohama
US
Yoshiyuki Touge
Sagamihara
US
Toshiharu Inui
Yokohama
US
Shuichi Murakami
Kawasaki
US
Agent
Fitzpatrick Cella Harper & Scinto
US
Assignee
Canon Kabushiki Kaisha
US
IPC
B41J 2/165
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