FEEDING SPEED CONTROLLING METHOD FOR AUTOMATIC PAPER FEEDING DEVICE

摘要

PURPOSE:To shorten the feeding interval allowing the feeding efficiency to be improved by controlling a feeding roller so as to permit the relative speed to be 'zero' from the time when a printing medium is held between a platen and a pressing roller to the time when the medium starts winding on the platen followed by the projection of its tip end. CONSTITUTION:The relative speed between the circumferential speed of a feeding roller 9 and that of a platen 1 is made greater while a printing medium 3 is being discharged, when the printing medium is transferred from a point where the tip end 3a of the following printing medium is separated to a point where the printing medium is in mesh with pressing rollers 4a and 4b in an automatic feeding device which has a drive source other than a drive motor for the platen 1. Later on, the relative speed described above is controlled so as to be 'zero' from the time when the tip end of the medium starts winding on the platen 1 to the time when the tip end 3a of the medium is projected. Thus the feeding interval of the printing medium is shortened, at the same time after the printing medium 3 is in mesh with the pressing rollers 4a and 4b which are pressed against the platen 1, and is winded on the platen 1, the feeding roller 9 is suspended.