Purge Unit; Components - Ricoh Fx880 Service Manual

November 28th, 1995 DETAILED SECTION DESCRIPTIONS
PRINTER

2.2.4. Purge Unit

1. Components

[E]
[A]
[C]
[D]
[B]
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Purge Unit Drive Gear [A]: The paper feed motor drives this gear during
cleaning. The gear functions as a cam to control the ink pump inside the
purge unit.
Wiper Unit [B]: The wiper unit wipes the ink from the ink cartridge face plate
during cleaning.
Cap Unit [C]: The cap unit caps the print head face plate (nozzles) when the
nozzles move to the capping position (this is when the carriage is at home po-
sition). The cap unit is also connected to the ink pump. It extracts ink from
the ink cartridge during cleaning operations. The waste ink is drained down
into the waste ink absorbers in the bottom of the unit.
Maintenance Jet Receiving Section [D]: This section receives ink ejected
from the nozzles into the purge unit to prevent clogging. The gear feeds the
waste ink to the waste ink absorbers in the bottom of the unit.
Slide Pin [E]: The slide pin causes the cap unit [C] to cap the nozzles when
the cartridge moves into the capping position. This unlocks the drive transfer
mechanism inside the purge unit, allowing the paper feed motor drive to be
transferred either to the purge unit drive gear [A] or to the paper feed unit
(see section 2-2-5).
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