3.7PAPER DETECTOR
The printer has a
An external circuit should be designed so that it detects the output from the paper detector and does not activate the thermal head when there is no paper. Doing not so may cause damage to the thermal head or platen roller or shorten the life of the thermal head significantly.
3.7.1General Specifications
Table
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| Item | Symbol | Maximum Rating |
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LED (input) |
| Forward current | IF | 50 mA |
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| Reverse voltage | VR | 5 V |
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| Allowable current | P | 75 mW |
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Photoransistor |
| VCEO | 20 V | |
(output) |
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| VECO | 5 V | ||
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| Collector current | IC | 20 mA |
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| Collector loss | PC | 70 mW |
Operating temperature |
| Topr | ||
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Storage temperature |
| Tstg | ||
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