A printing apparatus for printing on an elongate printing medium includes the following elements: a transport mechanism for transporting the printing medium; a printing unit including a plurality of print heads arranged at intervals in a transport direction; a detecting unit including at least three detectors arranged as spaced from one another for detecting positions in a width direction of the printing medium; a variation history acquirer for deriving, for each detection cycle, a function approximate curve based on positions of the same location in the transport direction of the printing medium detected by the respective detectors, and acquiring from each function approximate curve, and as a variation history, a deviation amount in the width direction in each of the printing positions; a predicted position calculator for calculating, from the variation history, a predicted position in the width direction for each of the printing position; and a printing controller for printing while correcting the position based on the predicted position.

An image processing apparatus for a printing apparatus. The image processing apparatus includes a recording position acquiring device for acquiring recording positions of a reference image printed by a reference print head and a target image printed by a target print head, a positional deviation amount calculating device for calculating a deviation amount due to a skew with respect to the recording positions of the reference image and the target image, and a positional deviation interpolation image converting device, when there is a remainder of the deviation amount and the predetermined intervals, for adding a weight based on the remainder, and adding a smaller weight than the weight to the reference image or the target image without a remainder and adjoining the reference image or the target image with the remainder, thereby converting the image into a width direction positional deviation interpolation image.

An image reading device includes: a conveyer, and an imaging device that reads optical information on a surface of a sheet-like member being conveyed by the conveyer, in an imaging area of a predetermined range in a conveyance direction. The conveyer includes a conveyance path moving mechanism that moves a conveyance path in the imaging area so that a distance from the imaging device changes and adjusts a position of the surface of the sheet-like member to a position at a predetermined distance from the imaging device. An image forming apparatus includes: the image reading device; and an image forming section that uses the sheet-like member being conveyed by the conveyer as a recording medium and forms an image on a surface of the recording medium.

A method is provided for checking an image inspection system having a camera system with a camera, an illumination apparatus for targeted illumination of a printing substrate, an image processing computer, and a main computer, for quality control of products of a printing substrate processing machine by using the main computer. A reference image is entered and transmitted to the main computer, a current printing image recorded by the camera system is transmitted to the image processing computer, a partial image in a suitable region of the current printing image, not being printed with printing image data, is selected in the image processing computer, the partial image is analyzed by comparison with the reference image in the image processing computer, and the inspection system is assessed based on the analysis of the partial image by the main computer and any defects of the inspection system being found are indicated.

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.

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.

An information processing device includes a retaining unit and an image display. The retaining unit retains image-formation-related information of an image forming apparatus that forms an image. The image display causes a display section of a portable terminal having the display section and an image capturing section to display an image for assisting with an operation of the image forming apparatus based on a captured image result of the image capturing section and the image-formation-related information retained in the retaining unit.

Production methods and systems enable the inline production of instant lottery tickets or documents using at least three different digital imagers. By interfacing at least three digital imagers in a common printing line, heretofore unknown printing efficiencies are realized, particularly on smaller volume print runs. These methods and systems enhance the overall appearance of the printed instant lottery tickets or documents, as well as potentially expand the consumer base.

An image processing apparatus for a printing apparatus. The image processing apparatus includes a recording position acquiring device for acquiring recording positions of a reference image printed by a reference print head and a target image printed by a target print head, a positional deviation amount calculating device for calculating a deviation amount due to a skew with respect to the recording positions of the reference image and the target image, and a positional deviation interpolation image converting device, when there is a remainder of the deviation amount and the predetermined intervals, for adding a weight based on the remainder, and adding a smaller weight than the weight to the reference image or the target image without a remainder and adjoining the reference image or the target image with the remainder, thereby converting the image into a width direction positional deviation interpolation image.

A method is provided for checking an image inspection system having a camera system with a camera, an illumination apparatus for targeted illumination of a printing substrate, an image processing computer, and a main computer, for quality control of products of a printing substrate processing machine by using the main computer. A reference image is entered and transmitted to the main computer, a current printing image recorded by the camera system is transmitted to the image processing computer, a partial image in a suitable region of the current printing image, not being printed with printing image data, is selected in the image processing computer, the partial image is analyzed by comparison with the reference image in the image processing computer, and the inspection system is assessed based on the analysis of the partial image by the main computer and any defects of the inspection system being found are indicated.