Specifications

Rev. A Outline of Operation 2-7
TM-J8000/J8000P Technical Manual
Confidential
Paper feeding
The paper-feed motor assembly consists of a step motor and a gear ("Gear, paper feed motor").
The rotation of the motor propagates through three gears ("Gear, J/C changeover", "Gear, paper
feed reduction", and "Gear, paper feed transmit") on the power-transmission mechanism, and
causes the paper-feed roller assembly to rotate. The paper-feed roller assembly comprises two
main components: a paper-feed roller ("Roller, paper feed"), which consists of a wide rubber
roller and a shaft, and a paper-feed gear ("Gear, paper feed") that is pressure-fitted to the shaft.
The paper-feed roller is pressed against the paper-hold roller ("Roller, paper hold") at fixed
pressure, so that the inserted roll paper is secured in place and can be fed by the turning action
of the feed roller.
The roll paper tension mechanism is a friction-clutch device that maintains a fixed tension on the
paper. When paper-feed is in progress, this tension stretches the paper between the paper-feed
roller and the paper-guide plate ("Plate, paper guide") creating a smooth surface for printing.
Figure 2-10 Paper feeding (1)
Figure 2-11 Paper feeding (2)
pape feed roller
assembly
roller, paper hold
gear, paper feed
roller, paper feed
gear, paper feed transmit
step motor
gear, paper feed
reduction
gear, paper feed motor
gear, J/S changeover
roller, paper-feed
roller, paper feed
gear, paper feed
roller, paper tension
roll paper tension
mechanism
gear, paper feed transmit
roller, paper hold