Platen Gap Adjust Mechanism - Epson Stylus 1500 Service Manual

Operating Principles

Platen Gap Adjust Mechanism

Set the platen gap adjust lever, attached to the left upper side of the printer cover, to the
appropriate position for the paper thickness. The platen gap adjust mechanism consists of the
platen gap adjust lever, carriage guide shaft, and two parallelism adjust bushings. Switching the
lever between positions 0 and + rotates the carriage guide shaft toward the front or rear. The
bushings have an eccentricity toward the center of the carriage guide shaft, and the platen gap is
changed from wide to narrow or vice versa.
Table 2-5. Platen Gap Adjust Lever Positions
Paper Type
Cut sheets
Transparencies
Card stock
Continuous paper
Envelopes
Parallelism Adjust Bushing
Figure 2-9. Platen Gap Adjust Mechanism
2-10
Lever Position
0
+
CR Guide Shaft
Eccentricity
Platen Gap
Adjustment Value
± 0 mm
+ 0.7 mm
Platen Gap Adjust Lever
Printhead
Platen Surface
Rev. A