Abstract: A light-emitting-device head includes a first light-emitting-device arrangement including light emitting devices arranged in lines extending in a first scanning direction; a second light-emitting-device arrangement including light emitting devices arranged in lines extending in a first scanning direction, the second light-emitting-device arrangement overlapping the first light-emitting-device arrangement in a second scanning direction at least in part; an optical device that forms an electrostatic latent image by focusing light emitted from the light emitting devices on a photoconductor and exposing the photoconductor to the light; and a switching unit that switches the light-emitting-device arrangement to be lit up between the first light-emitting-device arrangement and the second light-emitting-device arrangement at a switching position defined at any position in an overlapping portion where the first light-emitting-device arrangement and the second light-emitting-device arrangement overlap each other.

Abstract: A light-emitting-device head includes a first light-emitting-device arrangement including light emitting devices arranged in lines extending in a first scanning direction; a second light-emitting-device arrangement including light emitting devices arranged in lines extending in a first scanning direction, the second light-emitting-device arrangement overlapping the first light-emitting-device arrangement in a second scanning direction at least in part; an optical device that forms an electrostatic latent image by focusing light emitted from the light emitting devices on a photoconductor and exposing the photoconductor to the light; and a switching unit that switches the light-emitting-device arrangement to be lit up between the first light-emitting-device arrangement and the second light-emitting-device arrangement at a switching position defined at any position in an overlapping portion where the first light-emitting-device arrangement and the second light-emitting-device arrangement overlap each other.

Abstract: An image forming apparatus includes an image forming section that forms a pattern image for detecting image-position displacement with respect to a lenticular lens sheet. The pattern image includes periodic images in each of which set images, each including two or more images of different shades and having a length equal to a lens pitch of the lenticular lens sheet, are arranged in a lens transverse direction of the lenticular lens sheet. The periodic images are arranged in a lens longitudinal direction of the lenticular lens sheet so as to be gradually shifted from one another in the lens transverse direction by a distance less than the lens pitch.

Abstract: An image-forming apparatus includes: a memory that stores a plurality of image forming modes; a contact controller that controls a status of contact between a plurality of image-forming units and an intermediate transfer member on the basis of an image forming mode selected from among the plurality of image forming modes, so that an image-forming unit used for image forming represented in the selected image forming mode is contacted with the intermediate transfer member, and another image-forming unit is moved away from the intermediate transfer member; and an image-quality adjusting unit that adjusts, if the status of contact is changed by the contact controller, an image quality of an image that is to be transferred onto the intermediate transfer member from the image-forming unit that is in contact with the intermediate transfer member.

Abstract: An image forming apparatus includes a plurality of toner-image forming units that receive image data and form electrostatic latent images on image bearing members in accordance with the image data, and form toner images of respective colors by developing the electrostatic latent images, an intermediate transfer member onto which the toner images are transferred, a transfer unit that transfers the toner images of the respective colors onto the intermediate transfer member, a controller that performs transfer control for changing a transfer pressure applied when the transfer unit transfers the toner images onto the intermediate transfer member, and a misregistration detector that detects a difference of a transfer position of each of the toner images of the respective colors on the intermediate transfer member when the transfer control is performed by the controller.

Abstract: The image forming apparatus is provided with: a toner image carrying member that moves while carrying a toner image; a transferring member that transfers, on a recording medium, the toner image that the toner image carrying member carries; a transporting unit that transports the recording medium along a transport path that passes through a transfer region where the transferring member transfers the toner image onto the recording medium; and a controller that controls a movement speed of the toner image carrying member. The controller changes the movement speed of the toner image carrying member in accordance with a position, on the transport path, of the recording medium that the transporting unit transports.

Abstract: There is provided an image processing apparatus having an image segmentation unit that divides image formation into image areas in a first direction, a random number memory that stores random numbers, a reference position determination unit that determines a reference position so as to vary in a second direction perpendicular to the first direction, a pixel determination unit that determines a pixel as a target to be subjected to correction processing of pixel insertion into or pixel reduction from each of the image areas, for the each of the image areas, according to the stored random numbers and the determined reference position, among pixels in the each of the image areas, and an image width change unit that performs the correction processing on the determined pixel to change an image width of the image information in the first direction.

Abstract: A recording material moving device comprises: a position adjuster that moves a recording material in a direction which is parallel to a recording surface of the recording material and orthogonal to a transporting direction, in an upstream side of a recording position along the transport direction of the recording material; a reference position specifying unit that specifies a reference position; a determination unit that determines whether a range of a predetermined width centered on the reference position exceeds a movable range of the recording material within which the recording material can be moved by the position adjuster; and a controller that causes, if the determination unit determines that the movable range is not exceeded, the position adjuster to sequentially move the recording material within the movable range of the predetermined width centered on the reference position each time a condition for moving the recording material is satisfied.

Abstract: An image-forming apparatus includes: a memory that stores a plurality of image forming modes; a contact controller that controls a status of contact between a plurality of image-forming units and an intermediate transfer member on the basis of an image forming mode selected from among the plurality of image forming modes, so that an image-forming unit used for image forming represented in the selected image forming mode is contacted with the intermediate transfer member, and another image-forming unit is moved away from the intermediate transfer member; and an image-quality adjusting unit that adjusts, if the status of contact is changed by the contact controller, an image quality of an image that is to be transferred onto the intermediate transfer member from the image-forming unit that is in contact with the intermediate transfer member.

Abstract: An image forming apparatus includes a plurality of toner-image forming units that receive image data and form electrostatic latent images on image bearing members in accordance with the image data, and form toner images of respective colors by developing the electrostatic latent images, an intermediate transfer member onto which the toner images are transferred, a transfer unit that transfers the toner images of the respective colors onto the intermediate transfer member, a controller that performs transfer control for changing a transfer pressure applied when the transfer unit transfers the toner images onto the intermediate transfer member, and a misregistration detector that detects a difference of a transfer position of each of the toner images of the respective colors on the intermediate transfer member when the transfer control is performed by the controller.

Abstract: An image processing device includes; an image segmentation unit that divides an image information set into a plurality of image areas, the image information set forming a plurality of lines each constituted of colored pixels arrayed in a first direction, and the image information set expressing gradations forming an image as a number of the colored pixels existing in a predetermined image area; an image area shift unit that shifts the predetermined image area among the plurality of image areas in a second direction different from the first direction, relative to an image area substantially contiguous to the predetermined image area; and a pixel replacement unit that replaces the colored pixels forming part of each of the lines and existing within a predetermined distance range from the boundary, with at least one of the colored pixels intervening between the lines.

Abstract: A recording sheet moving device includes: a moving unit that moves a recording sheet; a recording sheet specifying unit that specifies a length in the transport direction and a weight per unit area of the recording sheet; a first memory configured to record, for each of plural recording sheets, a threshold for a length in the transport direction in association with a weight per unit area; and a movement control unit that retrieves a threshold for a length on the basis of the specified weight per unit area from the first memory, and compares the retrieved threshold for a length and the specified length, to determine whether to cause the moving unit to move the recording sheet, and if it is determined that the recording sheet should be moved, causes the moving unit to move the recording sheet.

Abstract: A recording medium transport apparatus includes: plural storage units each storing a recording medium; a transport unit that transports the recording medium from one of the storage units to a recording position where an image is recorded on the recording medium; a memory that stores a reference position of a recording medium prescribed for each storage unit; a measuring unit that measures a position of the transported recording medium; and a movement unit that reads the reference position corresponding to the storage unit that stored the transported recording medium, from the memory, and moves the recording medium according to the difference between the reference position and the measured position such that the position of the recording medium approaches the reference position when the recording medium is located upstream of the recording position in the transport direction thereof.

Abstract: The image forming apparatus is provided with: a toner image carrying member that moves while carrying a toner image; a transferring member that transfers, on a recording medium, the toner image that the toner image carrying member carries; a transporting unit that transports the recording medium along a transport path that passes through a transfer region where the transferring member transfers the toner image onto the recording medium; and a controller that controls a movement speed of the toner image carrying member. The controller changes the movement speed of the toner image carrying member in accordance with a position, on the transport path, of the recording medium that the transporting unit transports.

Abstract: A recording sheet moving device includes: a moving unit that moves a recording sheet; a recording sheet specifying unit that specifies a length in the transport direction and a weight per unit area of the recording sheet; a first memory configured to record, for each of plural recording sheets, a threshold for a length in the transport direction in association with a weight per unit area; and a movement control unit that retrieves a threshold for a length on the basis of the specified weight per unit area from the first memory, and compares the retrieved threshold for a length and the specified length, to determine whether to cause the moving unit to move the recording sheet, and if it is determined that the recording sheet should be moved, causes the moving unit to move the recording sheet.

Abstract: A recording material moving device comprises: a position adjuster that moves a recording material in a direction which is parallel to a recording surface of the recording material and orthogonal to a transporting direction, in an upstream side of a recording position along the transport direction of the recording material; a reference position specifying unit that specifies a reference position; a determination unit that determines whether a range of a predetermined width centered on the reference position exceeds a movable range of the recording material within which the recording material can be moved by the position adjuster; and a controller that causes, if the determination unit determines that the movable range is not exceeded, the position adjuster to sequentially move the recording material within the movable range of the predetermined width centered on the reference position each time a condition for moving the recording material is satisfied.

Abstract: A recording medium transport apparatus includes: plural storage units each storing a recording medium; a transport unit that transports the recording medium from one of the storage units to a recording position where an image is recorded on the recording medium; a memory that stores a reference position of a recording medium prescribed for each storage unit; a measuring unit that measures a position of the transported recording medium; and a movement unit that reads the reference position corresponding to the storage unit that stored the transported recording medium, from the memory, and moves the recording medium according to the difference between the reference position and the measured position such that the position of the recording medium approaches the reference position when the recording medium is located upstream of the recording position in the transport direction thereof.

Abstract: There is provided an image processing apparatus having an image segmentation unit that divides image formation into image areas in a first direction, a random number memory that stores random numbers, a reference position determination unit that determines a reference position so as to vary in a second direction perpendicular to the first direction, a pixel determination unit that determines a pixel as a target to be subjected to correction processing of pixel insertion into or pixel reduction from each of the image areas, for the each of the image areas, according to the stored random numbers and the determined reference position, among pixels in the each of the image areas, and an image width change unit that performs the correction processing on the determined pixel to change an image width of the image information in the first direction.

Abstract: An image processing device includes; an image segmentation unit that divides an image information set into a plurality of image areas, the image information set forming a plurality of lines each constituted of colored pixels arrayed in a first direction, and the image information set expressing gradations forming an image as a number of the colored pixels existing in a predetermined image area; an image area shift unit that shifts the predetermined image area among the plurality of image areas in a second direction different from the first direction, relative to an image area substantially contiguous to the predetermined image area; and a pixel replacement unit that replaces the colored pixels forming part of each of the lines and existing within a predetermined distance range from the boundary, with at least one of the colored pixels intervening between the lines.