Abstract: An image forming apparatus includes: an image forming unit; a storage section that stores a plurality of registration information, each including authentication information and terminal information indicating a terminal corresponding to the authentication information; an input section that inputs authentication information; an acquisition section that acquires registration information including terminal information corresponding to the authentication information inputted by the input section, from the storage section of the image forming apparatus or a storage section of another image forming apparatus; and a controller that receives image data from a terminal indicated by the terminal information included in the registration information acquired by the acquisition section and controls the image forming unit to form an image on a recording medium based on the received image data.

Abstract: An image forming apparatus can include exposure units having light emitting elements, a forming unit which has a photoreceptor exposed by the exposure unit and forms an image on a body to be transferred, an acquisition unit for acquiring a tilt angle error between an approximated line of a first pattern formed by the forming unit based on exposure of one exposure unit and an approximated line of a second pattern formed by the forming unit based on exposure of another exposure unit, and an adjustment unit for adjusting at least one of a light emitting time lag of the light emitting elements and an angular error of the exposure units between the one exposure unit and the other exposure unit to restrain the tilt angle error.

Abstract: In an image forming apparatus, an image forming portion forms an image on a rotator. A storage portion stores change characteristics information relevant to correction parameters corresponding to phase points of the rotator. A designating portion designates a correction parameter from the correction parameters based on the change characteristics information. A correcting portion corrects an image forming position on the rotator based on the correction parameter designated by the designating portion. When a first determining portion determines, based on a detecting phase point of the rotator detected by a detecting portion, that the current phase of the rotator corresponds to a shifting phase point, and further a second determining portion determines that the image forming portion is in inactive time, the designation by said designating portion is shifted to the correction parameter corresponding to the shifting phase point.

Abstract: An image forming apparatus is provided. The image forming apparatus includes: a body, to which a plurality of image forming cartridges containing developers are attachable; and a communication device which wirelessly communicates with a plurality of non-contact tags provided to the plurality of image forming cartridges, respectively. The communication device includes: a plurality of antennas which are provided correspondingly with the plurality of image forming cartridges; and a switching controller which switches signals from the plurality of antennas.

Abstract: A light scanning device includes: a light source which emits a light beam; an oscillating mirror which oscillates rotationally to reflect the light beam; an optical system which is configured to convert the light beam reflected by the oscillating mirror to be scanned over a scanning line on a target at a constant speed when an oscillation amplitude of the light beam by the oscillating mirror is a reference value; a detection unit which detects the light beam at least one position; a modulation controller which controls modulation of the light beam based on external data; and a timing correction unit which corrects a modulation timing based on two consecutive detection times of the light beam detected by the detection unit and detection times of the light beam detected by the detection unit when the oscillation amplitude is the reference value.

Abstract: A feeding unit that feeds a medium, a plurality of image carriers arranged in parallel along a moving direction of the medium, a developer image forming unit that forms a developer image on the plurality of image carriers, and a transfer unit that transfers the developer image formed on the plurality of image carriers onto the medium is described. The developer image forming unit forms a first developer image on a first image carrier of the plurality of image carriers, the first developer image being used for transferring a first pattern at a first interval on the medium along the feeding direction. Also, the developer image forming unit forms a second developer image on a second image carrier of the plurality of image carriers, the second developer image at the first interval and a second interval alternately on the medium along the feeding direction.

Abstract: An image forming apparatus can include exposure units having light emitting elements, a forming unit which has a photoreceptor exposed by the exposure unit and forms an image on a body to be transferred, an acquisition unit for acquiring a tilt angle error between an approximated line of a first pattern formed by the forming unit based on exposure of one exposure unit and an approximated line of a second pattern formed by the forming unit based on exposure of an other exposure unit, and an adjustment unit for adjusting at least one of a light emitting time lag of the light emitting elements and an angular error of the exposure units between the one exposure unit and the other exposure unit to restrain the tilt angle error.

Abstract: An optical scanning device is provided. The optical scanning device includes an oscillating mirror which has a pair of electrodes and a mirror oscillator, and which deflects a light beam; a driving unit which applies a wave-like driving signal to the pair of electrodes so as to oscillate the mirror oscillator by an electrostatic force corresponding to the driving signal; and an adjusting unit which changes a duty ratio of the driving signal to adjust an oscillation amplitude of the oscillating mirror.

Abstract: In an image forming apparatus, an image forming portion forms an image on a rotator. A storage portion stores change characteristics information relevant to correction parameters corresponding to phase points of the rotator. A designating portion designates a correction parameter from the correction parameters based on the change characteristics information. A correcting portion corrects an image forming position on the rotator based on the correction parameter designated by the designating portion. When a first determining portion determines, based on a detecting phase point of the rotator detected by a detecting portion, that the current phase of the rotator corresponds to a shifting phase point, and further a second determining portion determines that the image forming portion is in inactive time, the designation by said designating portion is shifted to the correction parameter corresponding to the shifting phase point.

Abstract: An image forming apparatus is provided. The image forming apparatus includes: a body, to which a plurality of image forming cartridges containing developers are attachable; and a communication device which wirelessly communicates with a plurality of non-contact tags provided to the plurality of image forming cartridges, respectively. The communication device includes: a plurality of antennas which are provided correspondingly with the plurality of image forming cartridges; and a switching controller which switches signals from the plurality of antennas.

Abstract: An optical scanning device is provided. The optical scanning device includes an oscillating mirror which has a pair of electrodes and a mirror oscillator, and which deflects a light beam; a driving unit which applies a wave-like driving signal to the pair of electrodes so as to oscillate the mirror oscillator by an electrostatic force corresponding to the driving signal; and an adjusting unit which changes a duty ratio of the driving signal to adjust an oscillation amplitude of the oscillating mirror.

Abstract: A light scanning device includes: a light source which emits a light beam; an oscillating mirror which oscillates rotationally to reflect the light beam; an optical system which is configured to convert the light beam reflected by the oscillating mirror to be scanned over a scanning line on a target at a constant speed when an oscillation amplitude of the light beam by the oscillating mirror is a reference value; a detection unit which detects the light beam at least one position; a modulation controller which controls modulation of the light beam based on external data; and a timing correction unit which corrects a modulation timing based on two consecutive detection times of the light beam detected by the detection unit and detection times of the light beam detected by the detection unit when the oscillation amplitude is the reference value.

Abstract: There is provided a projector having a projecting unit, a projecting system which projects video onto a projection surface by use of the projecting unit, a projecting direction judgment system which judges a projecting direction of the projecting system, and a menu image generating system which generates a menu image, as video generated in the projector as the video to be projected by the projecting system, so that the menu image suits the projecting direction judged by the projecting direction judgment system.

Abstract: An image forming apparatus includes: an image forming unit; a storage section that stores a plurality of registration information, each including authentication information and terminal information indicating a terminal corresponding to the authentication information; an input section that inputs authentication information; an acquisition section that acquires registration information including terminal information corresponding to the authentication information inputted by the input section, from the storage section of the image forming apparatus or a storage section of another image forming apparatus; and a controller that receives image data from a terminal indicated by the terminal information included in the registration information acquired by the acquisition section and controls the image forming unit to form an image on a recording medium based on the received image data.

Abstract: There is disclosed a projector supportable on a support surface which is defined as at least a surface coplanar with or parallel to a projection surface, for use in projecting imaging light representative of a display image onto the projection surface, to thereby display the display image on the projection surface. The projector includes: a projection device arranged to project the imaging light toward the projection surface, to thereby focus the image onto the projection surface as a projected image; and a supporting device arranged, when placed on the support surface, to support the projection device such that a distance between an exit face at which the imaging light exits the projection device and the projection surface is adjustable.

Abstract: A feeding unit that feeds a medium, a plurality of image carriers arranged in parallel along a moving direction of the medium, a developer image forming unit that forms a developer image on the plurality of image carriers, and a transfer unit that transfers the developer image formed on the plurality of image carriers onto the medium is described. The developer image forming unit forms a first developer image on a first image carrier of the plurality of image carriers, the first developer image being used for transferring a first pattern at a first interval on the medium along the feeding direction. Also, the developer image forming unit forms a second developer image on a second image carrier of the plurality of image carriers, the second developer image at the first interval and a second interval alternately on the medium along the feeding direction.

Abstract: A sheet feeding device for automatically feeding sheet paper from a cassette or feeding one sheet of paper at a time as the sheets are inserted into an insertion guide. The paper is fed in the automatic feed mode by bringing the stacked paper and a rotating sheet feeding roller into contact with one another. When the manual feed mode is selected, the stacked paper and the rotating roller are separated. A sheet of paper placed in the insertion guide is fed to a contact point between the sheet feeding rollers, now rotating counter to the rotational direction during automatic sheet feeding, and an opposing pressure rollers.