Patent ID: 6641314
Filing Date: 2003-11-04
Classification: B41J

Abstract:
A color thermal printer for recording at least three color images to thermosensitive recording material according to frame sequential recording, said color thermal printer comprising:a feed roller set, for transporting said recording material at a first speed back and forth by transport in first and second directions alternately; a thermal head, positioned downstream from said feed roller set in said first direction, for recording said three color images according to said transport in both said first and second directions; a first tension roller set, positioned downstream from said thermal head in said first direction, for applying tension to said recording material; a first tension motor for driving said first tension roller set; a controller for controlling a rotational speed of said first tension motor, for determining a transporting speed of said recording material with said first tension roller set higher than said first speed in said transport in said first direction, and for determining a transporting speed of said recording material with said first tension roller set lower than said first speed in said transport in said second direction; and a first torque limiter for adjusting transmission of rotation of said first tension motor to said first tension roller set, to keep a transporting speed of said recording material with said first tension roller set at said first speed during said transport in said first and second directions.