Epson LQ 300 - Platen Gapadjustment Mechanism

LQ-300 Service Manual
Operating Principiea
Fulcrum Color Ribbon Cartridge
1/
CS Lever //
Black
Cyan
: ~>
Magenta
Yellow
Color Cartridge Holder
CS Motor Assembly Pinion
Color Shift Cam
/
\
Color Shift Cam Follower
CS Cam Gear
Figure 2-9. Color Shift Mechanism
2.1.6 Platen Gap Adjustment Mechanism
The platen gap (the gap between the platen and the printhead) can be adjusted to allow the printer
to use paper of different weights or thicknesses. When the gap adjust lever is moved forward or
badcward, the CR guide shaft rotates. This rotation moves the carriage either toward or away from
the platen and changes the platen gap. lhe correct platen gap is 0.45 & 0.02 mm, with the gap
adjust lever set to position O.
Gap Adjust Lever Motion
PG
Gap Adjust Lever
—..
—..4
Platen
‘\
CR Guide Shaft
Figure 2-10. Platen Gap Adjustment Mechanism
Rev.A
2-9