Patent ID: 8840217

Claim:
A sheet supply device comprising: a pair of registration rollers for feeding a print sheet to a print unit of a printer; a sheet supply roller for feeding a print sheet to the pair of registration rollers; and a controller configured to control the pair of registration rollers and the sheet supply roller, wherein the controller is operable to: start driving operation of first rotation of the sheet supply roller to contact a leading edge of the print sheet to a registration nip of the pair of registration rollers to form a slack of the print sheet, stop the driving operation of the first rotation of the sheet supply roller after the slack of the print sheet is formed, start driving operation of rotation of the pair of registration rollers after the driving operation of the first rotation of the sheet supply roller is stopped, start driving operation of second rotation of the sheet supply roller after the driving operation of the rotation of the pair of registration rollers is started, and keep a speed difference between a feed speed of the pair of registration rollers and a feed speed of the sheet supply roller until the slack of the print sheet is flattened.