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REV.-A
2.4.3.11 Operation Sequence of Pump Unit
The pump unit has various roles. Basic operations are as follows:
• Capping:
A firm attachment of the cap to the head prevents air from contacting the head, which protects the
ink in the head nozzles.
(1) Transfers the head to the position of the cap.
(2) Advances the cap set, forming firm contact.
• Brushing:
Brushing removes any dust and ink adhering to the front surface of the head.
(1) Transfers the head to the brush position.
(2) Rotates the cleaner to perform brushing.
• Ink charging:
Charging of fresh ink serves to eliminate bubbles in the nozzle.
(1) Transfers the head to the position of the brush.
(2) Through the valve mechanism, maintains atmospheric pressure inside of the cap.
(3) Firmly attaches the head to the cap.
(4) By means of the valve mechanism, shuts in air between cap and valve.
(5) The pump sucks ink from the head, and charges fresh ink into the head.
(6) By means of the valve mechanism, the vacuum within the cap is released.
(7) Detaches the cap from the head
Note the following explanations that pertain to operations.
a. Power on under normal conditions:
Capping - Ink charging - (1 sec.) - Release capping - All nozzles inject 100 times - wait
b. Power on under normal conditions for automatic cleaning:
Ink charging (1,2 sec.) - Wait
c. Power on, head uncapped:
Home position seek - Brushing (3 sec.) - Ink charging (1-2 sec.) - Wait
d. Manual cleaning:
Brushing (10 sec.) - Ink charging (6 sec.) - Wait (off line)
e. 3 seconds pass after previous printing, next printing data not received:
Capping - Wait (When next data arrives, printing starts after capping unlocked)
f. Initial ink charging:
Ink charging (15 sec.)-Brushing (10 sec.)-Capping (45 sec.)-Ink charging (5 sec.)-Wait
g. Refresh during printing (1 time/3 min.):
Head is transferred to refresh area - All nozzles inject 10 times - Return
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