A controller that corrects tilt of recording paper by rotating a rotation board on which a resist roller pair for feeding recording paper to an image forming device is provided about a support as a rotation axis, and tilting roller shafts of the resist roller pair upstream or downstream with respect to a transport direction, and another controller that corrects a rotation speed of the resist roller pair based on a direction and amount of tilt of the roller shafts are included.

A sheet conveying device includes a correcting portion and a side end detecting portion for detecting a side end of a sheet. The correcting portion includes a first roller whirlable about a first axis in a crossing direction crossing a conveyance direction and a widthwise direction and for correcting a position of the sheet in the widthwise direction, and a second roller disposed at a position different from the first roller in the widthwise direction, whirlable about a second axis in the crossing direction and for correcting the position of the sheet. Based on a detection result of the side end detecting portion, a control portion executes a first control in which the correcting portion corrects the position of the sheet in the widthwise direction and executes a second correcting control in which the correcting portion corrects the position of the sheet after the first correcting control.

Manufacturing decorative panels by using a web-fed inkjet printer. During the feeding of the to-be-printed substrate, the tension of the substrate is controlled by a dancer unit (720) which includes a dancer roll (200), having a connector (120) on both side ends of said roll, and wherein both connectors (120) are connected to a pair of parallel guiders (110) for floating said roll along a floating path (210); and wherein the step of controlling comprises the step of moving one guider (110) of said pair of guiders (110) parallel to said floating path (210) whereby the dancer roll (200) is tilted.

A paper feeding device comprises a storage surface for a stack of papers and being adapted to be move vertically between a first, lower end position and a second, upper end position, and a feeding roll for feeding papers from their position on the storage surface and imparting an uppermost sheet of paper a horizontal displacement. A first mounting device comprises a first vertically movable, preferably pivotable housing adapted to mount or suspend a first end of the feeding roll, and a second mounting device comprises a second vertically movable, preferably pivotable housing adapted to mount or suspend a second end of the feeding roll opposite to the first end of the feeding roll. By providing the first and second housings pivotable independently of each other and an intermediate axle, the feeding roll adapts to a non-uniform stack of papers, improving the reliability of the feeding.

A medium transport device 6 includes a feed out section 2 that feeds out a medium 3 that is wound in a roll shape, a main roller 8, formed of a single body that applies a feed force to the medium in the transport direction F, a plurality of sub rollers 9 arranged at a distance D from each other along the longitudinal direction of the main roller 8, wherein the sub roller 9 that rotates while nipping the medium with the pair with the main roller 8. the intermediate section 17 in the longitudinal direction of the main roller 8 is disposed at a downstream position in the transport direction F with respect to the end sections 23 and 24.

A controller that corrects tilt of recording paper by rotating a rotation board on which a resist roller pair for feeding recording paper to an image forming device is provided about a support as a rotation axis, and tilting roller shafts of the resist roller pair upstream or downstream with respect to a transport direction, and another controller that corrects a rotation speed of the resist roller pair based on a direction and amount of tilt of the roller shafts are included.