Paper Feed Assembly - Epson Stylus Pro 7600 Service Manual

EPSON Stylus Pro 7600/9600

2.2.2 Paper Feed Assembly

This printer uses friction feed to carry out highly precise feeding of roll paper and cut
sheets, and comprises a unique paper feed mechanism.
The paper feed mechanism unit is configured from a grid roller (one piece
construction), and pressurizing and follower roller assemblies mounted on the back of
the CR guide rail opposite the front surface.
Secondary Roller Assembly
PF Motor
Figure 2-11. Paper Feed Mechanism Unit 1/2
Operating Principles
Grid Roller
R = Paper width flag
L = Paper Set Lever flag
Paper Set Lever
PF motor
The PF motor is a DC motor. The grid of the loop scale mounted on the Grid
Roller is read by the PF_ENC sensor and the output pulse is fed back to control the
motor. This feedback control ensures high printing accuracy.
Driving of the grid roller is accomplished by the PF motor via the PF timing belt
which attaches to a reduction pulley that is connected to the grid roller.
Center Frame
Figure 2-12. Paper Feed Mechanical Unit PF Rail Unit
Print Mechanism Components
Secondary Roller Assembly
Grid Roller
PF Motor
Revision A
CR Guide Rail
Speed-Reduction Gear
Platen
Sub Platen
Paper
Paper Guide L1, L2
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