Epson tm-m30, Technical Reference Manual

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Notes on use
Time required until printing starts
If the host computer and the printer are not connected on a continuous basis but rather connected every time
the printer starts printing, some time may be needed for the printer to actually start printing after the host
computer commands printing. This pause is the time required for processing the connection between the host
computer and the printer.
After opening the port, leave an interval of 300 msec or more before sending data to the port.
Timing to shut the connection off
If a connection between the host computer and the printer is shut off while the printer is offline, it may not be
re-established. In this case, first clear the printer offline causes, and then try to re-establish the connection.
Multi-tone printing
When performing multi-tone printing over
Bluetooth
, the print speed may fluctuate or intermittent printing
may occur due to data transfer conditions, also the print shade may change or white lines may occur.
Interference from Wi-Fi
2.4 GHz Wi-Fi may interfere with
Bluetooth
communication. Using the optional Wireless LAN cable set (OT-
WLxx) with 2.4 GHz may disrupt
Bluetooth
communication or printing. 5 GHz Wi-Fi is recommended when
using Wi-Fi with
Bluetooth
.
Notes when communicating with Android devices
•
The printer cannot connect to Android 2.3 and 2.3.2.
•
When communicating with Android 2.3.3 or later versions, communicate through an insecure connection.
Notes when communicating with iOS devices
Print data deletion and Bluetooth disconnections occur
Situation
Depending on the specifications of the iOS device, print data sent to the printer may be deleted. When this
occurs, the
Bluetooth
connection between the printer and the iOS device is disconnected.
Conditions
This occurs when the printer is not ready to print, and 64 KB or more of print data is sent to the printer.
<Status in which the printer cannot print>
•
When the roll paper cover is open
•
When the paper is out
Solution
Do not send data to the printer if the printer is not ready to print.
For developers using the SDK from Epson, see the User's Manual - Chapter 3 Programming Guide - "Printing
After Checking the Printer Status".