Printing method and apparatus for counting number of ejected ink droplets for controlling printhead recovery
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United States of America Patent
Stats
-
May 7, 2002
Grant Date -
N/A
app pub date -
Jul 24, 1995
filing date -
Jul 29, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A printing apparatus which maintains excellent image quality even in a long printing operation. In printing, the number of ink droplets (number of printing dots: A) discharged from a printhead IJH is counted by each printing operation. The counted number is accumulated to the total number (B) of printing dots from a point where a previous recovery suction has been started. Next, the total number (B) of printing dots is compared with a predetermined threshold value (C). If B
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