Limiting Stepper Motor Heating
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08
To prevent overheating of the paper advance stepper motor in a printer, a timer is used to introduce a delay between uses of the motor. This reduces the duty cycle to a level which does not generate excessive heat. For most normal use, this delay occurs during printing time and throughput is not degraded. For applications with much spacing and little printing, printing may be delayed, and throughput is somewhat degraded. Other known techniques for temperature control, i.e., large heat sinks, fans, bigger motor, reduction of motor speed, etc., are generally more expensive, require more space, or degrade throughput for all applications.