Epson TM-T70 Instruction Manual download pdf (Page 48)

3-10 Application Development Information Rev. A

3.4.1.2 Roll Paper End Sensor

The roll paper end sensor detects whether there is paper in the paper path. When there is no

paper (paper end status), the PAPER OUT LED and ERROR LED light to indicate an error has

occurred. If the sensor detects a roll paper end, the printer stops printing, even in the process of

printing. We recommend that you mainly rely on the roll paper near-end sensor and use the roll

paper end sensor secondarily.

3.4.2 Printer Cover Sensor

3.4.2.1 Roll Paper Cover Open Sensor

The cover-open sensor monitors the roll paper cover. When the sensor detects an open cover

during printing, the printer stops printing immediately.

This status is treated as an automatically recoverable error, and the ERROR LED flashes. When

the printer cover is closed, the ERROR LED goes out, and starts printing at the beginning of the

line it was printing when the cover was opened.

When the printer recovers, it feeds paper to take up slack and starts printing from the beginning

of the line where the error occurred. In this case, double printing and printing position shift may

occur. When a cover open error occurs, we recommend clearing the printer’s print buffer by

sending the error recovery command from the driver, and resending the print data.

Note:

Whether the cover is open or not does not affect the status reported by the roll paper end sensor.

3.4.3 Offline

This printer is not equipped with an online/offline switch. The printer automatically goes

offline under the following conditions:

• During power on (including resetting with the interface) until the printer is ready

• During the self-test

• When the roll paper cover is open

• During paper feeding using the FEED button

• When the printer stops printing due to a paper-end (if an empty paper supply is

detected by the roll paper end sensor or if the driver has been set to stop printing when a

roll paper near-end is detected)

• When an error has occurred

3.4.4 Busy State

3.4.4.1 Selecting conditions for invoking a BUSY state

With DIP SW2-1, you can select conditions for invoking a BUSY state as either of the following:

❏ When the receive buffer is full

❏ When the receive buffer is full or the printer is offline

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 83 84

No comments

Epson TM-T70 Instruction Manual Page 48