Epson LX-810 Technical Manual page 82

2.2.8
Ribbon-feed Mechanism
The ribbon-feed mechanism consists of the ribbon cartridge and the ribbon-feed section. The
ribbon-driving gear is always driven counterclockwise (regardless of the timing belt direction) via the
gear trains shown in Table 2-8.
Direction of
Carriage
Left to right (arrow o)
Right to left (arrow ~)
Figure 2-51 shows the ribbon-feed mechanism. The inked ribbon is held in the cartridge case between
the ribbon-feed and the ribbon-pressure roller mounted on the ribbon-driving gear. The ribbon
configuration is such that the ribbon can feed endlessly.
The ribbon-driving gear drives the rollers, which causes the ribbon to be fed.
To prevent ribbon slack, a ribbon-breaking spring is attached at the exit of the cartridge case. A ribbon
mask is installed to prevent the ribbon from staining the paper.
Ribbon Feed Roller
Ribbon Pressure Roller=
Ribbon Transmission Gear ~
Planet Gear @,
Ribbon Driving Gear _
Table 2-8. Ribbon-Feed Gear Train
M o v e m e n t o f
Belt-driven pulley -+ Platen gear (1)
Belt-driven pulley -+ Platen gear (1)
+ Platen gear (3) --+ Platen gear (4)
Ribbon-driving gear
Figure 2-51. Ribbon-Feed Mechanism
Gear Train
2-46
Ribbon Br
"caking
Spring