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• Capping operation
This operation functions to prevent the drying of ink, ink leakage and the
adhesion of dust on the BJ print head. The rubber cap on the pump rotates
several tens of times by the carriage pressing the control pin when it moves
to the home position, and covers the nozzle outlets on the BJ cartridge.
After a fixed period of time has elapsed after image data has stopped arriv-
ing, capping operation is automatically performed.
• Pumping operation
When capping is canceled, and the BJ print head is released from the cap,
the pump sucks out ink via the rubber cap and the ink is blown out to the
waste ink sheet. The inside of the nozzles on the BJ print head are then
filled with fresh ink. This operation is called "pumping." Pumping
removes unwanted air bubbles and impurities together with ink from inside
the nozzles.
• Wiping operation
The surface of the nozzles is wiped by a wiper. This operation is called
"wiping." Wiping removes unwanted ink droplets and paper fiber from the
surface of the nozzles.
• Maintenance jet operation
After wiping, ink is blown out of the nozzles in the direction of the mainte-
nance jet absorber. The purpose of this is two-fold, to prevent the nozzles
on the BJ print head from clogging, and to correct the ink surface shape on
nozzle outlets.
RECORDING SECTION
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