Epson Stylus C58/C59/ME 2/C79/D78/C90/C91/C92/D92/T20/T20E/T23/T26/S20/T10/T11/ME 30/T21/T24/T27/S21 Revision E
OPERATING PRINCIPLES Printer Mechanism 25
Confidential
2.2.4 Ink System Mechanism
The Ink system mechanism consists of pump mechanism and capping mechanism that
includes wiper mechanism.
2.2.4.1 Pump Unit Mechanism
When the PF motor turns, power is always transmitted to the ink system.
Note * : The PF Motor rotational direction = seen from the left side of the printer.
2.2.4.2 Capping Mechanism
The Capping mechanism covers the printhead with the cap to prevent the nozzle from
increasing viscosity when the printer is in stand-by state or when the printer is off.
Table 2-3. PF Motor Rotational Direction & Ink System Mechanism
Direction* Function
Counterclockwise Absorbs the ink by the Pump Unit
Clockwise Release pump.
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