A print apparatus is disclosed. In some examples, the print apparatus comprises a print head to deposit print agent onto a substrate; a detector to detect a fiducial; a first light source to back-illuminate the substrate, such that light from the first light source is to be detected by the detector through the substrate; and processing apparatus. The processing apparatus is to operate the print head to deposit print agent to form a first fiducial on a first side of the substrate, the first fiducial comprising a shape of a first colour and having a first dimension, and a background of print agent of a second, different colour, wherein the first dimension of the shape does not exceed a corresponding dimension of the background; operate the print head to deposit print agent to form a second fiducial on a second, opposite side of the substrate, the second fiducial comprising an inverted version of the shape of the first colour; operate the first light source to back-illuminate the substrate; operate the detector to detect the first and second fiducials; and determine whether the first fiducial is aligned with the second fiducial. A method and a machine-readable medium are also disclosed.

A method of controlling an image processing apparatus. the method includes accepting a predetermined instruction regarding a predetermined image that is being displayed on the image processing apparatus, changing, in a case when the predetermined instruction is accepted, so that a predetermined mark added to the predetermined image does not overlap with a non-printing area corresponding to an area where printing is not to be performed, a location of the predetermined image based on the predetermined mark, and executing a process of printing the predetermined image and the predetermined mark in the printing area corresponding to an area where printing is to be performed on a recording medium.

An image processing device comprises a receiving port, a processor and an output port. The receiving port receives old image data from a peripheral device. The old image data has partial positioning mark data corresponding to a portion of a positioning mark of a document, and partial main image data corresponding to a partial main image of a portion of a main image of the document. The processor electrically connected to the receiving port shifts the partial main image by a calibration distance in a calibration direction to a standard position of a typesetting page according to the partial positioning mark data and the partial main image data, and adds a predetermined image to one side or neighboring two sides of the partial main image to generate new image data. The output port electrically connected to the processor outputs the new image data. Copy apparatus and method are also provided.

An image forming apparatus includes an image forming unit to form an image on a sheet, a conveyance unit to convey the sheet having the image formed thereon to a conveyance path and a reading unit to read a test image of a sheet conveyed to the conveyance path. In addition, a controller determines an adjustment value for adjusting a geometric characteristic of an image to be formed by the image forming unit based on a reading result of the reading unit, controls the image forming unit to form the test image, controls the reading unit to read the sheet having the test image formed thereon, and determines an adjustment value for adjusting a geometric characteristic of an image to be formed by the image forming unit based on a reading result of the reading unit.

An image forming apparatus includes an image forming device and circuitry. The image forming device forms an image on a recording medium, based on an image forming condition. The circuitry determines a position of the image formed on the recording medium by the image forming device, based on a detection signal of a pattern formed on the recording medium by the image forming device and reference position information of the pattern on the recording medium. The circuitry determines a reference position of the pattern differently depending on the image forming condition.

A droplet ejecting apparatus includes a workpiece table configured to place a workpiece thereon, a droplet ejecting head configured to eject droplets onto the workpiece placed on the workpiece table, a Y-axis linear motor configured to move the workpiece table in a main scanning direction (Y-axis direction), a position detector configured to detect a position of a carriage mark, and a control unit configured to calculate the positional deviation amount in the main scanning direction between a detection position detected by the position detector and a reference position of the carriage mark and correct a droplet ejecting timing of the droplet ejecting head based on the positional deviation amount.

A reading device includes a carriage movable in a sub-scanning direction, an optical sensor mounted on the carriage, the optical sensor being configured to scan an object placed on a contact glass, a reference scale used as a reference when a dimension of the object is computed based on an image obtained as the optical sensor scans the object, a flat gauge to be scanned by the optical sensor to calculate a corrective value used to correct the image obtained by the optical sensor, and circuitry to calculate the corrective value based on a scanned image including the reference scale and the flat gauge obtained by the optical sensor, and correct, based on the corrective value, a measurement image including an image of the object and an image of the reference scale obtained by the optical sensor and compute the dimension of the object based on the corrected measurement image.

An image processing apparatus 1 obtains displacement amounts of patterns formed on front and back sides of a recording sheet respectively, and performs correction of an image formation position based on the displacement amounts. The image processing apparatus 1 calculates the lengths of the sides of each of the front and back sides of a recording sheet by detecting the intersection points of the surrounding edges of the recording sheet with reference to the image data of the each of the front and back sides. A magnification error is calculated based on the lengths of the sides corresponding between the front and back sides. A correction amount is then calculated based on the calculated magnification error in order to make the lengths of each side match each other. Displacement amounts of the positions of the patterns is obtained after correction based on the correction amount.

A device (1) is for guiding printer (20). The device (1) is utilized in a method for using a handheld electronic printer (20) with the device (1). The device (1) includes a base (2) having at least one guide (5), and a carriage (3) having at least two separate links (26, 27) engaged with the at least one guide (5). The at least one guide (5) has at least two linear sections (7, 8) being spaced apart and parallel. The at least one guide (5) includes at least two changeover sections (10, 11), each connecting two linear sections (7, 8). The changeover sections (10, 11) are arranged at different positions of the linear sections (7, 8) the changeover sections respectively connect.

An information processing apparatus includes: a processor is configured to: read an image of at least one of a first surface or a second surface of a medium with the medium folded; discriminate whether the image is of the first surface or the second surface based on an identification image in the image; specify, based on the image, a surface on which a folding deviation occurs; and determine a correction direction of the folding deviation according to whether the surface on which the folding deviation occurs is the first surface or the second surface.