Thermal printer and method for checking disconnection

摘要

Generally, in accordance with embodiments, a thermal printer comprises heating elements, a storage section, a drive circuit and a controller. A plurality of heating elements are linearly arranged. The storage section stores a one-line amount of image data. The drive circuit energizes each heating element according to the one-line amount of image data. An acquisition section acquires an A/D value corresponding to the voltage applied to each heating element every time each heating element is energized. The controller outputs a one-line amount of empty data to the storage section to acquire a first A/D value with the acquisition section, reduces, based on the first A/D value, noises of a second A/D value which is acquired by energizing each heating element and checks the disconnection of each heating element based on the noise-reduced second A/D value.

主权项

1. A thermal printer, comprising:
a plurality of linearly arranged heating elements; a storage section configured to store a one-line amount of image data; a drive circuit configured to energize each heating element according to the one-line amount of image data; an acquisition section configured to acquire an A/D value corresponding to the voltage applied to each heating element every time each heating element is energized; and a controller configured to output a one-line amount of empty data to the storage section to acquire a first A/D value with the acquisition section, reduce, based on the first A/D value, noises of a second A/D value acquired by energizing each heating element, and check the disconnection of each heating element based on the noise-reduced second A/D value.