Epson TM-J8000 Especificações descarregar pdf (Página 51)

Rev. A Outline of Operation 2-25

TM-J8000/J8000P Technical Manual

Confidential

Cover-open detector mechanism

This mechanism consists of lock lever ("Lever, CS lock") located on the roll paper cover, and a

detection lever ("Lever, cover-open detect") and cover-open detector located on the gear-train

frame assembly on the paper roll side. The mechanism detects the open/close state of the cover.

The cover-open detector consists of an LED and a phototransistor. When the cover is closed, the

lock lever rotates the detection lever such that the blocker plate on the other end of the detection

lever moves between the LED and phototransistor, blocking the light flow and changing the IC

output. The change in IC output detects the open/closed state.

When the printer detects that the cover is open, it immediately goes offline and stops operating.

Figure 2-37 Cover-open detector mechanism

Cutter detector mechanism

This mechanism consists of two cutter detectors (one at left, indicated as "L", and the other at

right, "R"), and a cutter carriage sub-assembly (which includes a blocker plate).

Each cutter detector consists of an LED and a photo IC. The detector outputs HIGH when the

blocker plate is blocking the light flow, and LOW when the light path is open. When the cutter

carriage sub-assembly is in standby at home position on either the L or R side, the detector on

that side will be generating a HIGH, while the detector on the other side will output a LOW.

When cutter operation begins (when a cutter command causes the cutter motor to begin

turning), the cutter moves out of home position, causing the blocker to move out of the detector,

so that L/R detectors will be outputting LOW. When the cutter completes operation and reaches

home position on the other side, the blocker will enter the detector at that side and the signal at

that side will go HIGH.

lever, CS lock

lever, cover-open detect

cover-open detector

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Epson TM-J8000 Especificações Página 51