Patent ID: 7883169
Filing Date: 2011-02-08
Classification: B41J,G06K

Abstract:
1. A method of controlling an operation of transporting plural printing mediums on a tray, the printing mediums including a first medium and a second medium to be transported subsequent to the first medium, the method comprising: actuating a first motor to drive a first roller adapted to pick up the printing medium on the tray and to transport the printing mediums; actuating a second motor to drive a second roller disposed at a downstream side of the first roller and adapted to transport the printing mediums to a printing area at which a printing operation is to be performed on each printing medium; transporting the first medium to a feed standby position by executing a simultaneous driving control, the feed standby position being arranged at a downstream side of the second roller; stopping a leading end edge of the first medium at the feed standby position; stopping the leading end edge of the first medium at a print start position when starting the printing operation on the first medium, the print start position being arranged at a downstream side of the feed standby position; stopping a leading end edge of the second medium at a stop position arranged between the first roller and the second roller while performing the printing operation on the first medium; and transporting the second medium to the print start position by executing a synchronization control, wherein in the synchronization control, actuation of the first motor is started earlier than actuation of the second motor, and in the simultaneous driving control, the first motor and the second motor are simultaneously actuated, in the synchronization control, a target transport distance of the first motor is larger than a target transport distance of the second motor, a plurality of rollers including the second roller are disposed at the downstream side of the first roller, the second roller is closest to the first roller among the plurality of rollers, and when the first medium has been passed through the first roller, the second medium is picked up by the first roller.