Recovery of ink jet recording apparatus using controlled suction of ink
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 22, 2003
Grant Date -
May 23, 2002
app pub date -
Oct 19, 2001
filing date -
Feb 13, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an ink jet recording apparatus having an ink jet head, an ink discharge from the head is executed to maintain and recover the discharge performance thereof. A cap is located opposite to the ink jet head when the maintaining and recovering ink discharge is performed, and receives the discharged ink. A waste ink tank receives ink exhausted from the cap. An ink pump transports ink received by the cap to the waste ink tank by performing idle suction. The number of times the idle suction is performed is variable, and is controlled by a control unit. The idle suction includes idle suction for recovery suction and idle suction for idle discharge. The idle suction for recovery suction is characterized as suction of ink when the cap caps the ink jet head, and the idle suction for idle discharge is characterized as suction of ink when the cap is communicated with atmosphere. The number of times of the idle suction is less for the idle suction for idle discharge than for the idle suction for recovery suction.
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