Epson DFX-9000 - Carrier Drive Mechanism

Epson DFX-9000 Revision B
Operating Principles Printer mechanism 61
2.2.2 Carrier drive mechanism
The Carrier unit is attached to the SP (CR) belt, which has a driven
pulley on one end and an idle pulley on the other. Drive force is
transmitted from the SP motor to the SP belt, and the Carrier unit moves
horizontally guided by both the Carriage shaft and Guide stay.
The Shield plate on the left side of the Guide Stay is used to detect a
horizontal reference position for the Carrier unit.
When printing, the position of the Carrier unit is determined by the CES
scale and the CES sensor on the Carrier unit, with reference to the print
start position and the motor speed. The resolution of the CES scale is 1/
120 inch.
Figure 2-5. The Drive Section of the Carrier Unit
CES Scale
Carrier Shaft
Carrier Unit
Guide Stay
SP Belt
SP Motor
Shield plate