Media advance system for a printer

摘要

A method of controlling a media-advance drive motor of a printer in a manner that preserves accuracy in the incremental advances of print media between printing swaths, while optimizing throughput and accounting for variations in printer system response characteristics. A printer control algorithm commences each media-advance step by accelerating the media-advance drive motor to a maximum velocity. The motor is thereafter decelerated by controlling the drive voltage to the motor as needed to conform to a predetermined decaying velocity versus position function that is representative of a specimen system. The velocity versus position function is correlated to the required media position so that a media-advance motor following that function will arrive at a zero velocity at the precise instant that the media arrives at the position representing the end of its incremental advance.