Mechanisms And Operating Principles; Power Transmission And Mechanism For Feeding Recording Paper - Citizen iDP3240 Service Manual

1. MECHANISMS AND OPERATING PRINCIPLES

The basic mechanism of the printer and their operating principles are explained for each block as
follows:

• Power transmission and mechanism for feeding recording paper

• Sensor mechanism
• Print head mechanism
1.1 Power transmission and mechanism for feeding
recording paper
The driving force of the motor is transmitted from the motor gear attached to the motor shaft via
the platen gear to the platen roller, and this driving force rotates the platen roller. The platen
roller is pressed against the surface of the heating unit of the thermal head by wire springs
located at both sides of the roller.
When the recording paper is inserted between the platen roller and the thermal head, the recording
paper is pulled in between the platen roller and the thermal head by the rotation of the platen roller
and transported to the output port in conjunction with the rotation of the platen roller.
Motor gear
Thermal head
Motor
Platen gear
Platen roller
Heating unit
Platen roller
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iDP3240 SERVICE MANUAL
Heating unit
Thermal head