Specifications

Confidential
EPSON
TITLE
SHEET
REVISION
NO.
SHEET NEXT
D
TM-U230 series
Specification
(STANDARD)
App.2 App.1
APPENDIX A: MISCELLANEOUS NOTES
1) Print duty
• When printing exceeds the allowable print duty cycle, the printer automatically detects the print head
temperature rise, stops logic-seeking, and enters full-column print head movement operation.
This stops the temperature rise by lowering print duty. If the print head temperature continues to
rise, the printer stops the print head. In this case, the user should be aware that the printing
speed may slow significantly.
• When printing is stopped due to high print head temperature, the ERROR LED blinks as shown in
Table 3.5.1.
• When the head temperature error occurs, the printer goes offline. The printer automatically goes
back online when the print head temperature falls.
• The upper limit conditions on continuous printing are as follows. (An example test pattern is shown
in Figure A-1 and Figure A-2.)
[Conditions] • Maximum continuous printing time: 1 hour
• Ambient temperature: 25°C {77°F}
• Number of line feeds:
Set the number of lines to be fed based on the following ratio:
A: ratio between printed lines and fed lines
15 lines of printing
A ≤
10 additional blank lines fed
• Print head duty:
The number of print columns must be 20 or less in full-column print head
movement operation.
• Print color selection:
Do not switch the print color frequently. When a black-red-black or
red-black-red color selection sequence is regarded as 1 switching, the user
should perform switching according to the rate shown below.
B: Print color switching rate
2 switches
B ≤
15 lines of printing
2) Data transmission
Data should be transmitted after the printer power is turned on and initialization finishes.
3) Reverse paper feed
Normally, the printer can feed paper 1 line (including the gear backlash) in the reverse direction,
when
ESC K
or
ESC e
is executed. However, do not reverse feed more than 8.467 mm {48/144"}
(including the gear backlash).
4) Paper cut position
The distance between the paper cut postion of the autocutter and the paper cut position of the
cutter on the cover is 27 mm {1.06"}.