Seiko Epson Corporation

Toshihiro Hagiwara

Atsushi Sakai

Eiji Ito

Hideki Nishimura

Nobuhiko Nishimura

Yuki Nishimoto

Nobuhiro Nishimura

A thermal printer has a thermal head with multiple heat elements for printing on roll paper; a measurer that measures heat element resistance; printer memory storing a resistance evaluation table relating the resistance of the heat elements to heat element defect levels defined based on a specific range of reflectivity in the symbol image; and an evaluator that references the resistance evaluation table stored in printer memory, acquires a defect level based on the resistance measured by the measurer, and evaluates the defect state of the thermal head based on the defect level of a consecutively adjacent count of heat elements.

Thermal printer, control method of a thermal printer, and printing system

A controller and a control method for a controller can simplify application development and can improve the performance of device control processes. When a request is received from an applicationand the received process request is an initialization request, whether or not the received request is the first initialization request received after the applicationstarted running is determined. If the received initialization request is the first initialization request, the request is passed to the device driverand initialization settings information describing the configuration of the device driverafter the initialization process ends is stored. If an error has occurred in the device driverwhen the device driverstatus is detected, an error handling process is executed according to the device driverstate. When the device driverhas recovered, a request for setting the device driverstate to the state based on the initialization settings information is asserted.

Controller and control method for a controller

Growing community of inventors

Ueda, Japan

Toshihiro Hagiwara