Table of Contents
Advertisement
(2) Paper feeding without LF (line feed) mechanism
The PF cam gear that drives paper feeding turns one time per head assembly shuttle.
The cam inside the PF cam gear presses down the protrusion (part A) of the sector gear
assembly when the head assembly returns. The sector gear assembly has teeth on the oppo-
site side of the protrusion which engage with the clutch gear that is concentric to the paper feed
roller.
The paper feed roller has a clutch
wheel next to the clutch gear to trans-
mit the driving force.
Normally this clutch wheel is not in con-
tact.
The sector gear assembly has a ful-
crum at the middle, so if the protrusion
is pressed down, the teeth are raised
to turn the clutch gear. The clutch gear
then is pushed out by the PF clutch
spring and engages with the clutch
wheel to rotate the paper feed roller.
This rotation, i.e., the paper feeding,
depends on the amount of ascent of
the teeth of the sector gear assembly.
4 dots/line is ensured without LF.
When the cam inside the PF cam gear
goes past due to rotation, the protru-
sion of the sector gear assembly is
raised again by the sector gear spring
so that the clutch gear separates from
the clutch wheel and stops the paper
feed roller.
— 9 —
Advertisement
Table of Contents
