Appendix A: Miscellaneous Notes - Epson TM-U220A Specification

Confidential

APPENDIX A: MISCELLANEOUS NOTES

1) Notes on printer installation
• If the power supply voltage drops to a value outside the range above during printing, the printer
stops printing and waits until the voltage returns to normal and then automatically begins printing
again. If the voltage does not return to normal, the printer generates an error. Therefore,
printing speed may slow, the print pitch may not be correct, and some dots in some characters
may not be printed.
• Both high and low voltage errors are shown in Table 3.5.3. The flashing patterns are shown in
the table.
• When either a high or low voltage error occurs, turn off the power as soon as possible.
2) Print duty control
The printer automatically runs the print duty control to avoid print head damage from exceeding the
print duty or lower print quality from rapid power voltage drop.
• When printing exceeds the allowable print duty cycle depending on the usage conditions such as
the number of print columns or the continuous print period, 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 intermittently. 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 flashes as shown
in Table 3.5.1, Automatically Recoverable Errors, and the printer goes offline. The printer
automatically goes back online when the print head temperature falls.
• An example where the print duty control is run in continuous printing
("Full-column print head movement operation" means a printing pattern where printing is always
performed using the both edges of the printable area.)
[Condition 1]
• Print pattern:
• Print head duty:
• Ambient temperature:
Print duty control is run approximately 2 minutes after start of printing.
• An example where print duty control in continuous printing is not run.
When print head duty is lower than the conditions below, the print duty control is not run.
[Condition 2]
• Print pattern:
• Print head duty:
• Ambient temperature:
[Condition 3] Figure A.1
• Print pattern:
• Print head duty:
• Ambient temperature:
EPSON
Full-column print head movement operation
Characters per line: 30
25°C {77°F}
Full-column print head movement operation
Characters per line: 15 (ANK font B)
25°C {77°F}
Printing pattern: full-column print head movement operation
Printing 15 lines + paper feeding 10 lines + auto-cutting
Characters per line: 20 (ANK font B)
25°C {77°F}
TITLE
TM-U220A
Specification
(For Argentina Fiscal)
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