Motor control device and thermal printer
AssigneeToshiba Tec Kabushiki Kaisha
InventorNaoyuki Hattori
Life of this patent
Estimating the term…
Abstract
According to one or more embodiments, a motor driving device includes a first substrate, a motor drive circuit, a first temperature sensor, a second temperature sensor, and a controller. The first substrate is connected to a motor via a first wiring. The motor drive circuit is provided on the first substrate. The first temperature sensor is provided on the first substrate and detects a first temperature of the motor drive circuit. The second temperature sensor detects a second temperature of an ambient environment where the motor is being used. The controller controls the motor drive circuit based on the first temperature from the first temperature sensor and the second temperature from the second temperature sensor.
Claims16
A thermal printer, comprising:
- a motor configured to convey a sheet for printing;
- a thermal head configured to perform printing on the sheet;
- a first substrate connected to the motor via a first wiring;
- a second substrate connected to the first substrate via a second wiring;
- a motor drive circuit on the first substrate;
- a first temperature sensor on the first substrate, the first temperature sensor being positioned to detect a first temperature of the motor drive circuit;
- a second temperature sensor, the second temperature sensor being on the second substrate and configured to detect a second temperature of an ambient environment where the motor is being used;
- and
- a motor controller configured to:
- set a first threshold value for the detected first temperature based on the detected second temperature,
- control the motor drive circuit based on the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor, and
- stop driving of the motor when the detected first temperature reaches or exceeds the first threshold value.
A thermal printer, comprising:
- a motor configured to convey a sheet for printing;
- a thermal head configured to perform printing on the sheet;
- a thermal head controller configured to control heating of the thermal head;
- a first substrate connected to the motor via a first wiring;
- a motor drive circuit on the first substrate;
- a first temperature sensor on the first substrate, the first temperature sensor being positioned to detect a first temperature of the motor drive circuit;
- a second temperature sensor, the second temperature sensor being positioned to detect a second temperature of an ambient environment where the motor is being used;
- and
- a motor controller configured to:
- set a first threshold value for the detected first temperature based on the detected second temperature,
- control the motor drive circuit based on the first temperature detected by the first temperature sensor and the second temperature detected by the second temperature sensor, and
- stop driving of the motor when the detected first temperature reaches or exceeds the first threshold value, wherein
- the thermal head controller controls heating of the thermal head according to a head energizing table that stores a plurality of predetermined head energization time durations and a plurality of predetermined ranges of the second temperature in association with each other.
Dependencies are inferred from the claim text.