Epson LQ-1050 Technical Manual page 48

REV.-A
Ribbon Feed Mechanism
The ribbon feed mechanism consists of the ribbon feed mechanism and ribbon carriage. Figure 2-5
shows the ribbon feed mechanism.
Ribbon Feed Rolk
R i b b o n Ptess.re ~
Roller
Belt Driven Pulley
Planet Gear @
The ribbon feed mechanism operates so that the ribbon drive gear always turns counterclockwise, via
the gear trains shown in Table 2-4, regardless of whether the timing belt moves to the right or to the
left.
Direction of Movement of Carriage
Left to right (arrow
Right to left (arrow ~)
The inked ribbon is a loop contained in the cartridge case, and held between the ribbon
pressure rollers. When the ribbon feed roller mounted on the ribbon drive gear is driven by the
movement of the gear, the inked ribbon is fed. A spring is attached at the exit of the carriage case to
prevent the ribbon from slackening.
-.
Ribbon Driving Gear
Fig. 2-5. Ribbon Feed Mechanism
Table 2-4. Ribbon Feed Gear Train
)
-
Belt driven pulley + Planet gear ~ ~
Planet gear @ ~ Ribbon driving gear
Belt driven pulley ~ Planet gear@ ~ Planet gear
2-6
Breaking
Gear Train
feed and ribbon