A medium feeding device includes: a medium mounting section that a medium is mounted; a feeding unit that feeds the medium in a feeding direction; a separation unit that separates the medium with the feeding unit; an operation detection unit that is disposed at a position facing a surface of the medium in the medium mounting section and detects a movement of the medium in the feeding direction; an interval forming unit that forms an interval in the feeding direction between a trailing end of a first medium which is the lowest medium fed among media mounted on the medium mounting section and a trailing end of a second medium which is bound with the first medium and stacked on the first medium; and a control unit that stops feeding of the medium based on a detection interval by a detection value of the operation detection unit.

An image forming apparatus includes a transfer member, a fixing unit, a double-side feeding path through which the sheet, performed with image formation on a first surface thereof and passed through the fixing unit; is fed to transfer the toner image onto a second surface thereof, a first feeding unit to feed the sheet in the double-side feeding path and a second feeding unit to feed the sheet fed by the first feeding unit toward the transfer member. A controller selects a first double-side feeding control in which the sheet is fed by the second feeding unit or a second double-side feeding control in which the sheet is fed by the first feeding unit and the second feeding unit in a case in which the double-side printing is performed in the second mode.

Methods and systems for blending line image data streams from a film scanner are disclosed. In one embodiment, a method is provided including receiving multiple data streams from line scan sensors. An overlap position may then be initially selected, which forms an overlap position between two of the data streams. A difference measure may then be calculated between the two data streams within the overlap area. The overlap positions may then be iteratively altered between a plurality of overlap positions, and additional difference measures may be computed for each overlap position. A blending position may then be selected from the plurality of overlap positions, which may correspond to the overlap position with the smallest difference measure. The data streams may then be blended at the selected blending position.

An optical scanning device includes a reflected-light passing unit having a passing region through which a portion of reflected light that is the scanning light reflected by the medium passes. An outer peripheral contour line of the passing region includes a contour curve configured with a set of points where coordinates in a direction orthogonal to a scanning direction are uniquely determined for the coordinates in the scanning direction. The contour curve renders a curve protruded toward the passing region. When a region in contact with the contour curve in the passing region is divided into a plurality of quadrilateral minute regions having equivalent areas and extending from the contour curve to a predetermined coordinate position in the scanning direction and are continuously arranged in the orthogonal direction, widths of the minute regions in the scanning direction are different for each location in the orthogonal direction.

A method for printing digital images on at least one input roll of media in order to form at least one output roll by means of a roll-to-roll printing system is disclosed. The roll-to-roll printing system includes a digital image queue including an entry for each digital image to be printed. The method includes registering in an entry of the digital image queue a first digital item identifying the digital image and digital items of print properties of the digital image, printing the digital image according to the order of the entry in the digital image queue, and registering in the entry a second digital item identifying an input roll on which the digital image is going to be printed and a third digital item identifying an output roll on which the printed digital image is going to be wound. A roll-to-roll printing system is configured to apply the method.

After the end of initial processing, such as a setting of a priority mode, a print schedule (a job execution schedule and a roll paper loading schedule) is created in consideration of the type, the remaining amount, and the like of roll paper loaded in each of a plurality of slots constituting an autochanger. Then, a possible loading time is obtained, which is a time at which roll paper can be loaded into a loading target slot that is a slot in which the roll paper is to be loaded during execution of continuous printing.

An image forming apparatus includes a transfer member, a fixing unit, a double-side feeding path through which the sheet, performed with image formation on a first surface thereof and passed through the fixing unit; is fed to transfer the toner image onto a second surface thereof, a first feeding unit to feed the sheet in the double-side feeding path and a second feeding unit to feed the sheet fed by the first feeding unit toward the transfer member. A controller selects a first double-side feeding control in which the sheet is fed by the second feeding unit or a second double-side feeding control in which the sheet is fed by the first feeding unit and the second feeding unit in a case in which the double-side printing is performed in the second mode.

Image stitching from multiple line scanners may be provided by selecting, at a plurality of times while progressing a film roll from a supply reel to a take-up reel, overlap areas on the film roll between first and second field of views of a first and second line scan sensors that read first and second data streams from the film roll; calculating, at each time, a difference measure between the first and second data streams in a current overlap area for a current time; adjusting, based on the difference measure, a size or a position of the overlap area for use at a subsequent time as the film roll progresses such that the current overlap area has a first number of pixels and a subsequent overlap area has a second number of pixels; and blending the first and second data streams at the current time at the current overlap area.

The disclosure relates to a method for printing a paper web with at least one print motif by means of a digital printing facility. The method includes: providing a digital image of a master sample of the print motif, printing a plurality of copies of a section of the at least one print motif with different color settings, creating digital images of the printed copies, comparing the digital images of the printed copies with the digital image of the master sample, where a degree of similarity is determined in each case, selecting color settings using the determined degrees of similarity and printing the print motif onto the paper web with the selected color settings.

In an example of the disclosure, a print job is received. The print job is to be printed upon a roll media at a printer, and includes a set of production frames 1-n. Printing of the production frames, a non-production frame x and a non-production frame y is caused. The non-production frame x includes an instruction to modify a non-printing apparatus that is to perform an action upon the printed print job, and is printed after the printing of production frame 1 and before the printing of production frame n. The non-production frame y includes a diagnostic and is printed after the printing of production frame 1 and before the printing of production frame n. The diagnostic is scanned to generate scan data. The scan data utilized to perform a calibration operation at the printer.