Epson TM-T90 Specification

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App. 3
TM-T90
Specification
(STANDARD)
2) When the printer goes to the standby (data-waiting) state during printing, it temporarily
stops printing and feeding paper. When data is transmitted and printing is executed, paper
may shift 1 to 3 dots from the print starting position, which especially affects bit-image
printing.
3) Interval of autocutting operation in the receipt section
For driving the autocutter of the receipt section, the interval should be a minimum of 10
lines of printing or paper feeding (to prevent small pieces of cut paper from dropping into
the autocutter).
A.2 Notes on Printer Installation
• Connect the external power supply to the power supply connector of the printer. Then plug in
the external power supply and turn it on if necessary. Be sure not to connect the external
power supply with the wrong polarity. If it is connected incorrectly, the internal circuit fuse of
the printer may be blown or the external power supply may be damaged.
• The power supply voltage is within the range of 24 V ± 7%. 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. 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 3.8.3. 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.
A.3 Other Notes
1) Printer mechanism handling
• Do not pull the paper out when the cover is closed.
• Because the thermal elements of the print head and driver IC are easy to break, do not touch
them with any metal objects.
• Since the areas around the print head become very hot during and just after printing, do not
touch them.
• Do not use the cover open button except when necessary, since the printer mechanism may
be damaged.
• Do not touch the surface of the print head because dust and dirt can stick to the surface and
damage the elements.
• Thermal paper containing a great deal of Na
+
, K
+
, and Cl
-
ions can harm the print head
thermal elements. Therefore, be sure to use only the specified paper.

Epson TM-T90 Specifications

General

Brand	Epson
Model	TM-T90
Category	Printer
Language	English