Clp-621 & - Citizen CLP-621 Technical Manual

2-1. Operation of Each Mechanism
2-1. Operation of Each Mechanism
This printer is a thermal transfer barcode & printer comprised of the following mechanisms:
media feed, ribbon feed, label/tag detection, print head up/down detection, head balance
adjustment and media thickness adjustment.
This section describes the operation of each of these mechanisms.
2-1-1. Locations and Functions of Motors, Sensors and Thermal Head
This printer has the following motors, sensors and thermal head.
(1) Ribbon unit section
Part name
Ribbon Motor F
(Front side)
Ribbon Motor R
(Rear side)
Tension Sensor F
(Front side)
Tension Sensor R
(Rear side)
Ribbon Motor F
Tension Sensor F
CLP-621 & CLP-631
This motor takes up ribbon. A thermistor is attached to the side
surface of this motor to detect the motor temperature.
This motor gives back tension to ribbon.
This sensor is a photointerrupter which detects if appropriate tension
is given to the take-up side ribbon or not.
It also detects a ribbon-running error.
This sensor is a photointerrupter which detects if appropriate tension
is given to the supply side ribbon or not.
It also detects the ribbon end status.
Ribbon Motor R
Description
Tension Sensor R
2-4