Figure 34. 8-Bin Mailbox Paper Path - HP Color LaserJet 9500 Service Manual

Paper-path and jam detection
The following illustration shows the paper path:
Standard
output
bins
Figure 34. 8-bin mailbox paper path
ENWW
Flipper—The flipper assembly receives the media from the printer or MFP. When it receives
a delivery notice from printer or MFP, the flipper motor starts to move at the print or copy
speed. When the ENTRY sensor is activated, the sheet is measured. If the sheet goes to the
face-up bin, the FACEUP sensor is deactivated to signal the end of the paper-handling
function and the sheet is ejected immediately. If the sheet goes to a face-down bin, the entry
sensor is deactivated, which indicates that the motor should stop and then reverse to flip the
sheet face-down. The flipper motor stops when the FACEUP sensor is deactivated in either
case: when the sheet is flipped or when it is ejected to the face-up bin.
Eject—On the eject assembly, the belt starts moving when it receives a sheet-arriving
message. The belt then moves the sheet down to the elevator head and, when the sheet
reaches the EXIT1 sensor, the eject motor starts. When the trailing edge of the sheet leaves
sensor EXIT1, only the eject assembly handles the sheet. The motor stops immediately after
the sheet is ejected, when the sheet is no longer touching the EXIT2 sensor. Note that the
flipper ejects the sheet if the destination is the face-up bin.
Elevator—The elevator assembly does not directly move paper. Instead, it places the
elevator head in front of the bins for paper delivery, as determined by the operating mode
and the bin status.
Left output bin
Delivery head motor
Blind cover
Bin 1
Bin 8
Controller PCA
Flipper assembly
Metal tape
Chapter 5 Theory of operation 71
Input paper guide
Home position
Delivery head line
Metal tape
Delivery head assembly
Eject rollers
Paper
Magnetic
strip
Transport
belt
Transport
belt motor