Specifications

Tips for Avoiding Problems
Pre vent over hea ting of the print he ad
Overheating of the thermal printhead is one of the most common causes of
serious printer problems.
To prevent overheating, certain duty cycle restrictions need to be applied
because of the heat generated by the thermal printhead, particularly when it
is printing logos. Certain limits we can apply are: ambient temperature, the
percentage of time of continuous solid printing (measured against one
minute), and the percentage amount of coverage.
To avoid overheating do one or more of the following:
n
Reduce the amount of coverage.
n
Reduce the time of continuous solid printing.
n
Reduce the ambient temperature.
Keep in mind that the ambient temperature may be adversely affected by
direct exposure to sunlight or close proximity to other sources of heat.
If the duty cycle exceeds the limits shown in the table below, the receipt
printhead will heat up and shut down. This may damage the printhead.
Allowable duty cycle (measured over one minute of continuous printing)
Amount of solid coverage Ambient temperature
25°C
(77°F)
35° C
(95°F)
50° C
(122°F)
20% 100% 50% 20%
40% 50% 25% 10%
100% 20% 10% 4%
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TIPS FOR AVOIDING PROBLEMS