Epson 440 User Manual download pdf (Page 52)

EPSON Stylus Color 440/640/740 Revision A

Chapter 2 Operating Principles 52

2.1.1.5 Ink System

Ink system mechanism consists of 1)cap mechanism, 2)pump

mechanism, carriage lock mechanism, 4)waste ink absorber and 5)ink

sequence. Out of these mechanism, from 1) to 4) are physical

mechanism and parts which are mounted on the printer mechanism and

5) ink sequence is performed automatically by firmware. Also, unlike

previous models, since Stylus Color 440/640/740 has no engage/

disengage mechanism to change over pump mechanism and paper

feed mechanism, it is one of the major characteristics that pump and

platen are always at work whenever the PF motor is driven. The figure

below shows head positions when the ink system and various ink

sequence are performed.

Figure 2-10. Ink System Mechanism

Figure 2-11.

Major Ink Sequence Position on Carriage Working Area

PF Roller Drive Gear

Eject Roller

Drive Gear

Eject Roller

TransmissionGear

PF(Pump) Motor

Pinion Gear

Pump Roller

Cap Unit

Cleaner Blade

Carriage Lock Lever

ABCDE

Printable Area

2976 dot(360-dpi)

A: Dummy Pumping Position(CRHP)

B: Ink Dischage Position

C: Flashing Position

D: Wiping Complete/Rubbing start Position

E: I/C Replacement Position

F: ASF Pick up Position

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Epson 440 User Manual Page 52