Epson 9600, 7600 service manual Explanation of Operation, Operation Explanation

EPSON Stylus Pro 7600/9600 Revision A

†Cap assembly

When not printing, the print head (should) rest on the cap assembly to ensure that the nozzles don't clog. Also, the print head is in the capped position during ink charging, cleaning, and so on.

†Flushing box

Flushing (dummy printing) is performed over the flushing box, and the flushed ink flows through the pipe to the waste ink pads.

†CR Lock Mechanism

If the carriage moves from the printable area to beyond the capping (CR_HOME) position to the right, the carriage moving prevention lock is engaged. The CR lock mechanism uses the cutter solenoid in common. When the cutter solenoid goes ON in the capping position, the CR lock is released.

†Maintenance Tank (Waste ink absorber)

NOTE: The Ink System Terms used in the above text are explained in the following table.

	Table 2-7. Explanation of Operation
Operation	Explanation
Carriage (CR) Lock	• This is the carriage stop position when the power is Off.
	• The time when the carriage is in the standby position (home position)
	with the power On and with no paper loaded and no print data to
	print.
Ink Initial Filling	• This is the operation where the head is filled with ink for the first
	time. When the first ink cartridge is inserted (after all 6 colors have
	been inserted), the ink initial filling operation is performed
	automatically.
	• The initial filling flag is set when the printer is shipped from the
	factory, then after this operation, the initial filling flag is reset. The
	initial filling flag is also set after the “ Input Rank” (p233) is run.
Flushing	• In order to prevent the viscosity of the ink inside the head nozzles
	from increasing, the ink inside the flushing box is flushed out.
	• Flushing is done when paper is set, when printing from the standby
	state, during continuous printing, during paper Eject, during paper
	cutting, etc.

Table 2-7. Explanation of Operation (continued)
Operation	Explanation
Empty Suction	• After ink is sucked up, the remaining ink inside the cap is sucked up
Operation	and the ink adhering to the head nozzle surface is removed.
	• Through flushing, etc., the ink that has accumulated in the cap is
	sucked up and discharged.
Wiping Operation	The carriage is moved from right to left along the rubber side of the
	wiper (the right half of the wiper plate) incorporated in the pump unit so
	that the head surface is rubbed with the rubber of the wiper.
	Purpose:
	• Before ink suction, removes the ink and other substances adhering to
	the head surface.
	• Ensures close contact of the cap.
Rubbing Operation	The carriage is moved from left to right along the felt side of the wiper
	(the left half of the wiper plate) incorporated in the pump unit so that
	the head surface is rubbed with the felt of the wiper.
	For easy removal of adhering substances, the nozzle surface is wetted
	before rubbing operation by suction of a small amount of ink.
	Purpose:
	• Removes ink and other substances adhering strongly to the head
	surface.
	• Ensures close contact of the cap.
Capping	In order to prevent the ink viscosity from increasing while it is being
	kept, a rubber cap is placed over the print head nozzles when entering a
	shutdown operation.

Operating Principles Print Mechanism Components 116