Epson TM-T88II Series Manual de Instruções descarregar pdf (Página 44)

Rev. A Mechanisms and Operation 2-5

TM-T88 Series Technical Manual

A separate type gear train is used for this mechanism. When the motor rotates in reverse, the

pressure angle relationship causes power to work in the direction that the gear train is

separated, so reverse motor operation is impossible.

Head holding mechanism

Spring pins, which act as bearings, are press fit onto either side of the thermal head. The thermal

head bearings are inserted into slots equipped in the main frame. The head holding plate affixed

to the main frame has two head holding springs that apply pressure to the back of the thermal

head. While the frame cover is open, the thermal head is in contact with the stopper equipped on

the main frame.

Figure 2.4.2 Power transfer mechanism

Figure 2.4.3 Head holding mechanism

Cover, frame

Shaft holder platen

Platen

Shaft holder platen

Gear, platen

Gear, reduction

Gear, motor

Motor, paper, receipt

Spring, head holding

Thermal head

Shaft holder platen

Plate, head holding

Frame, main

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Epson TM-T88II Series Manual de Instruções Página 44