A measurement device includes a light source that radiates an illumination light on a measurement object; and a measurement unit that measures a measurement light that is reflection light obtained by the illumination light being reflected by the measurement object or transmitted light obtained by the illumination light passing through the measurement object. The illumination light is a plurality of illumination lights. In a case where the measurement object is positioned at a reference position, an illumination center at which an optical axis of each of the plurality of illumination lights and the measurement object intersect, and a measurement center that is a center of a measurement region of the measurement object measured by the measurement unit are positioned at different positions.

A printing apparatus includes a feeding unit, a pair of rollers, a printing unit, and a control unit. The control unit can execute skew correction. The control unit can execute control to convey a preceding printing medium and a succeeding printing medium by the pair of rollers in a state in which a trailing edge portion of the preceding printing medium and a leading edge portion of the succeeding printing medium overlap. The control unit sets an execution timing of the skew correction for the succeeding printing medium based on positions of the preceding printing medium and the succeeding printing medium if a predetermined condition is met. The predetermined condition is that the preceding printing medium reaches a position at which a remaining print range for the preceding printing medium equals a predetermined print range.

A control apparatus comprises: a grouping unit that divides a plurality of sheets each associated with image data included in a processing target job into groups each having a predetermined size; and a control unit that controls feeding of a sheet from a feeding unit onto a conveyance path and refeeding of a sheet which has been conveyed on the conveyance path onto the conveyance path, wherein the predetermined size is not less than a maximum sheet size used in the processing target job, a plurality of groups can be conveyed on the conveyance path, and the control unit controls feeding and refeeding for each group grouped in the grouping unit.

A measuring device includes an optical device which includes a window on which light is incident, a shutter which includes a white reference surface on an optical device side and is configured to block the window, a first moving mechanism which moves the optical device in a direction, and a second moving mechanism which relatively moves the window and the shutter between a first position at which the window is blocked by the white reference surface and a second position at which light is incident on the window.

In an example implementation, a method of adjusting frame length in an inkjet web press includes measuring a time T1 between a first sensor sensing a first mark and a second sensor sensing a second mark, and measuring a time T2 between the second sensor sensing the second mark and the first sensor sensing a next first mark. The method includes adjusting a gap between printed frames when T1 does not equal T2.

A medium transport device includes a medium transport path for transporting a medium, and a medium detection unit that detects a medium by using detection light intersecting the medium transport path. the medium detection unit is a part constituting an optical path of the detection light, and includes a first optical component positioned on a first side of the medium transport path, and a second optical component positioned on a second side with the medium transport path interposed therebetween, and the second optical component is accommodated in a recess formed in a wall face extending in a direction intersecting a path surface of the medium transport path.

The present invention relates to a printing apparatus including: a conveyance roller; and a slitter unit configured to cut a printing medium, which is conveyed by the conveyance roller, wherein the slitter unit includes a cutting mechanism including an upper movable blade and a lower movable blade, each of which is in a round shape, and configured to cut the printing medium at a contact point of the upper movable blade and the lower movable blade, a driving unit configured to rotate the upper movable blade and the lower movable blade, and a control unit configured to control a driving amount of the driving unit, and wherein the control unit controls the driving amount of the driving unit such that a movement speed of the upper movable blade and the lower movable blade passing through the contact point becomes greater than a conveyance speed of the printing medium.

A medium transport apparatus includes a body portion, an inversion unit, and an extension unit. The body portion has a second manual feed path for a sheet material. The inversion unit is configured to be mounted on and separated from the body portion, covers the second manual feed path when the attachment/detachment portion is mounted the body portion, and exposes a portion of the second manual feed path when the attachment/detachment portion is separated from the body portion. The extension unit is configured to be attached to and detached from the attachment/detachment portion. The extension unit extends, in a state in which the inversion unit is separated, the second manual feed path in a transport direction of the sheet material by being detached from the inversion unit and attached to the body portion.

An image forming apparatus includes a sheet tray, a feed roller, a transfer roller, a fuser, a conveying unit, and a controller configured to execute a normal process. The controller executes a particular process, when performing the single sided printing. The particular process is a process in which the controller is configured to execute a non-actual-printing process on a first surface of a first sheet, and then configured to execute the non-actual-printing on a first surface of a second sheet before executing an actual-printing process on a second surface of the first sheet. The non-actual-printing process is a process of conveying the sheet to the fuser without transferring the developer image onto the first surface of the sheet. The actual-printing process is a process of transferring the developer image onto the second surface of the sheet.

An inkjet recording apparatus for curing ink ejected onto a base material and forming recorded matter on the base material is provided. The inkjet recording apparatus includes an ejection unit configured to eject the ink onto a first area of the base material and a second area surrounded by the first area, a curing unit configured to cure the ink ejected onto the base material, and a control unit configured to control the curing unit in such a way that a time from ink ejection onto the first area to ink curing is longer than a time from ink ejection onto the second area to ink curing.