Epson 7600, 9600 service manual Cleaning Mechanism, Pump Drive Modes

EPSON Stylus Pro 7600/9600 Revision A

2.2.3 Cleaning Mechanism

The cleaning mechanism in this printer is compatible with the cleaning mechanism in the Stylus Pro 5000/9000. The cleaning mechanism is located on the right side of the printer. The waste ink from the cleaning mechanism is channeled to the waste ink pad (Maintenance Tank) in the lower right side through the tube.

The cleaning mechanism components are installed above the sub-frame and some are fixed on the main frame as shown below.

†Pump assembly (head cleaner)

When the head is in the capped position (valve closed), the pump motor creates a vacuum that sucks ink from the nozzles. This is used for removing ink from the nozzles and nozzle plate, initial ink charge, as well as cleaning. The waste ink flows through one small tube to the waste ink pads.

†Head cleaner

The head cleaner has felt on one side and rubber on the other, and is used to wipe or rub off ink and foreign materials from the nozzle surface.

†Pump motor (stepping motor)

The pump motor runs normally (the pump wheel turns clockwise as viewed from the pump wheel side) and reverses (the pump wheel turns counterclockwise) to execute the following functions:

„Clockwise rotation (CW):

pump assembly drive for cleaning and so on (Suction, wiper setting)

„Counter clockwise rotation (CCW):

Pump release, wiper reset, HD_SLIDE (head gap adjustment) cam drive. See “Platen Gap Adjustment Unit” (p.106).

Table 2-6. Pump Drive Modes

Suction Speed Name	Pump Wheel	Pump Wheel	Motor Frequency
(Drive Mode)	Revolving Speed	Revolving Speed (2-2 phase conversion)
Low speed (IS5)	0.46 rev/sec	0.15 ml/sec	186 Hz
Standard (IS4)	1.6 rev/sec	0.6 ml/sec	648 Hz
High speed (IS3)	2.6 rev/sec	0.9 ml/sec	1053 Hz
Super-high speed (IS2)	4.2 rev/sec	1.1 ml/sec	1702 Hz
Super-high speed (IS1)	5 rev/sec	1.2 ml/sec	2026 Hz

Note : The values for Motor Frequency above, given only for information, are obtained by 2-2 phase drive conversion with a drive system consisting of the pump wheel with P.C.D of

φ30.4 and motor gear with P.C.D of φ 6.

Cleaning Mechanism

(Maintenance ASSY)

Maintenance Tank

Figure 2-14. Cleaning Mechanism Components

Pump assembly

Head cleaner

Flushing box

Cap assembly CR Lock

Pump motor

Figure 2-15. Cleaning Mechanism Components

Operating Principles Print Mechanism Components 115