Xerox ii LINXSolid Inkjet 100 Service Manual page 69

Transfixing, Stripping And Exiting
As the leading edge of the sheet of paper trips the paper preheater
exit sensor, it starts the transfix roller being lowered to its transfix
position. The process motor rotates clockwise, rotating the process
drive compound gear counterclockwise. Fourteen flags on the
circumference of the gear represent the fourteen teeth on the small
gear on the back of the compound gear. When the teeth of the small
gear are in the proper position, as detected by the compound gear
position sensor, the transfix cam solenoid energizes to release the
spring-loaded transfix cam on the right end of the transfix roller
shaft. This allows the transfix roller gear (which up to this point in
time had missing teeth "disengaged" to the 14-tooth gear of the
process drive compound gear), to rotate slightly and engage the small
gear of the compound gear. During this time, the drum, rotating at
about 24 rpm, positions the deadband to coincide with the arrival of
the leading edge of the sheet of paper (which is moving at the same
rate as the drum).
The rotating transfix gear rotates the transfix roller shaft about one-
half revolution. The transfix roller, which is eccentrically mounted on
the transfix roller shaft, rotates into contact with the paper (5 mm
behind the leading edge) and then stops. This sandwiches the leading
edge of the paper between the transfix roller and the beginning of the
image on the drum. The drum's rotation rotates the transfix roller
and begins to pull the sheet of paper between them. The transfix
roller shaft rotates slightly more so a protrusion on the transfix roller
cam causes the stripper fingers to momentarily drop down onto the
deadband of the drum and catch the leading edge of the sheet of
paper and direct the paper to the rotating exit rollers, which are belt
driven by the paper path motor. The transfix roller shaft rotates
slightly more to clear the protrusion on the transfix roller cam and
raise the stripper fingers so they no longer contact the drum.
The process motor stops, leaving the transfix roller cam in its half-
rotated position. Friction from the rotating drum continues to turn
the transfix roller, which freely rotates on the transfix roller shaft.
The ink on the drum transfers to the sheet of paper pulled by the
friction between the drum and the transfix roller. After about 1.8
seconds, the complete image has been transferred to the paper. The
process motor drives the transfix gear until the transfix gear is
completely unloaded. At this point, the transfix gear is disengaged
from the process motor gear, the transfix cam solenoid is latched
again and the transfix roller is lifted off of the drum.
The paper path motor, driving the exit rollers through a drive belt,
pushes the remainder of the sheet of paper into the exit tray. The
trailing edge of the paper is detected by the exit sensor, ending the
print cycle.
General Information 1-69