Abstract: In a feeding course, a first design side end position Xsn of a paper is calculated. A first side end position of the paper is detected by a paper width detector, and the detected position is set to a first side end position Xd1. When the paper is fed from an additional cassette and a paper end detection flag F1=1, an ejection starting position adjustment amount ?X=Xd1?Xsn is set. However, when the deviation amount is not |Xd1?Xsn|?L, the ejection starting position adjustment amount ?X is limited to a limit value L.

Abstract: There is provided a feeding guide unit that slides according to a width size of the feeding material in a receiving unit that receives a plurality of feeding materials, and a separation unit having an inclined surface structure that abuts on a tip of the fed feed material so that a separating load is exerted, and separates the following feed material to feed only the feed material at the uppermost position. The separating load of the separation unit is changed to at least two stages in conjunction with a movement in a width direction of the feeding guide unit.

Abstract: A color printer includes a color printer main body, a photosensitive drum, a rotary development device, a plurality of toner containers and a drive power transmission mechanism. The drive power transmission mechanism includes a housing, a shaft member, a first transmission mechanism, and a second transmission mechanism. The housing is mounted on the color printer main body. The shaft member is mounted in the housing so as to be axially rotatable, and mobile in the axial direction. The first transmission mechanism is mounted in the housing and transmits the drive power of the drive motor to the shaft member, so that the shaft member can be moved in the axial direction. The second transmission mechanism is mounted in the housing and transmits the drive power of the drive motor to the shaft member, so that the shaft member can be rotated.

Abstract: A color printer includes a color printer main body, a photosensitive drum, a rotary development device, a plurality of toner containers and a drive power transmission mechanism. The drive power transmission mechanism includes a housing, a shaft member, a first transmission mechanism, and a second transmission mechanism. The housing is mounted on the color printer main body. The shaft member is mounted in the housing so as to be axially rotatable, and mobile in the axial direction. The first transmission mechanism is mounted in the housing and transmits the drive power of the drive motor to the shaft member, so that the shaft member can be moved in the axial direction. The second transmission mechanism is mounted in the housing and transmits the drive power of the drive motor to the shaft member, so that the shaft member can be rotated.