
2-4 Mechanisms and Operation Rev. A
M-T88 Printer Mechanism
This printer consists of six mechanisms: a paper feed mechanism, a paper supply mechanism, a
printer mechanism, a cutter mechanism, a cover mechanism, and a display mechanism. The
following illustration shows the external configuration of the M-T88.
Paper Feed Mechanism
Paper feed is performed by a power transfer mechanism that rotates the platen, and a head
holding mechanism that presses the thermal head against the platen.
Power transfer mechanism
On the frame cover, the platen is supported by the platen shaft holder so it turns freely. Closing
the frame cover causes the platen gear affixed to the platen shaft to mesh with the deceleration
gear equipped on the main frame. The rotary force (in the direction of arrow (1)) of the receipt
paper feed motor affixed to the main frame is transferred in sequence to the motor gear (press fit
to the motor shaft), the deceleration gear, and the platen gear, which rotates the platen in the
direction of arrow (2).
A PM type stepping motor is used for the receipt paper motor.
Figure 2.4.1 M-T88 external configuration
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