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EPSON Stylus Pro 7600/9600 Revision A
Operating Principles Print Mechanism Components 113
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.
Figure 2-11. Paper Feed Mechanism Unit 1/2
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.
Figure 2-12. Paper Feed Mechanical Unit PF Rail Unit
Grid Roller
Secondary Roller Assembly
PF Motor
Paper Set Lever
R = Paper width flag
L = Paper Set Lever flag
Secondary Roller Assembly
Grid Roller
CR Guide Rail
Speed-Reduction Gear
Platen
Sub Platen
Paper
Paper Guide L1, L2
PF Motor
Center Frame