Ink Supply Mechanism - Ricoh PRIPORT VT 2000 Series Service Manual

28 February '91

7.7 INK SUPPLY MECHANISM

[H]
[F]
[C]
[J]
[G]
[I]
[E]
[B]
[A]
[D]
Ink is supplied from the ink cartridge [A] to the ink roller by the ink pump [B]
through 4 holes in the drum shaft [C].
Drum rotation is transmitted through gear [D] to gear [E].
However, rotation is not transmitted to gear [F] due to the spring clutch [G].
When the ink on the ink roller decreases and the ink detector turns on, the
ink supply solenoid [H] turns on and the ink supply stopper [I] releases from
the clutch sleeve allowing the gear [F] and gear [J] to turn.
The pin [H] moves the pump shaft up and down as gear [J] rotates. There-
fore, the ink in the ink cartridge is sucked into the pump. The pump then
pushes the ink out onto the ink roller through the 4 holes in the drum shaft
[C].
* One stroke of the ink pump occurs for every 2 rotations of the drum.
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