Tokyo Electric Co.

Yoshihiro Takai

Michio Suzuki

Yasuhiro Sakura

Katsumi Uematsu

A label printer includes a printing head having a plurality of heating elements arranged in a direction perpendicular to the feed direction of a label, and a data generator for supplying a plurality of article data, including a bar code and a price, to the printing head in the ordinary printing mode. In the test mode, the data generator supplies to the printing head test pattern data indicative of a plurality of test patterns which are printed in substantially the same positions as the printing positions of those plurality of article data, each of the test patterns having an area of substantially the same size as the largest one of the areas occupied by the article data to be printed in the same printing position.

Label printer with test pattern for price and bar codes

A thermal-printing device prints by selectively supplying a current to a plurality of heat generating elements in accordance with printing data. In a check mode, the thermal-printing device sequentially supplies a check current to the heat generating elements through a light-emitting diode and a current-limiting resistor.

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Shizuoka, Japan

Yoshihiro Takai