Abstract: A light emitting device includes a light-emitting element row that includes light emitting elements arranged in a row in a main scanning direction, an optical element that is used for forming an electrostatic latent image by focusing light outputs of the light emitting elements and exposing a photoconductor to light and a control unit that controls light emission of the light-emitting element row. The light-emitting element row is divided into groups, and the control unit uniformly corrects a light intensity of each of the light emitting elements included in the groups on a group-by-group basis by a first correction method so as to correct density unevenness in the main scanning direction.

Abstract: A light emitting device includes a first light-emitting-element row that includes light emitting elements arranged in a row in a main scanning direction and a second light-emitting-element row that includes light emitting elements arranged in a row in the main scanning direction and that is positioned in such a manner that at least a portion of the second light-emitting-element row overlaps the first light-emitting-element row in a sub scanning direction. The first and second light-emitting-element rows are each formed by arranging light-emitting-element array chips in each of which the light emitting elements are arranged in a row in the main scanning direction. In each of the light-emitting-element array chips, a pitch of the light emitting elements arranged in a row is changed from a first pitch to a second pitch, which is different from the first pitch, in a central region of the row of the light emitting elements.

Abstract: A light emitting device includes: a first light-emitting-element row that includes light emitting elements arranged in a row in a main scanning direction; a second light-emitting-element row that includes light emitting elements arranged in a row in the main scanning direction and that is positioned in such a manner that at least a portion of the second light-emitting-element row overlaps the first light-emitting-element row in a subscanning direction; and a light-emission control unit that switches a light-emitting-element row caused to emit light between the first light-emitting-element row and the second light-emitting-element row at a switching point that is set at a position in an overlapping portion in which the first light-emitting-element row and the second light-emitting-element row 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: A light emitting device includes: a first light-emitting-element row that includes light emitting elements arranged in a row in a main scanning direction; a second light-emitting-element row that includes light emitting elements arranged in a row in the main scanning direction and that is positioned in such a manner that at least a portion of the second light-emitting-element row overlaps the first light-emitting-element row in a subscanning direction; and a light-emission control unit that switches a light-emitting-element row caused to emit light between the first light-emitting-element row and the second light-emitting-element row at a switching point that is set at a position in an overlapping portion in which the first light-emitting-element row and the second light-emitting-element row overlap each other.

Abstract: A light emitting device includes a first light-emitting-element row that includes light emitting elements arranged in a row in a main scanning direction and a second light-emitting-element row that includes light emitting elements arranged in a row in the main scanning direction and that is positioned in such a manner that at least a portion of the second light-emitting-element row overlaps the first light-emitting-element row in a subscanning direction. The first light-emitting-element row and the second light-emitting-element row are each formed by arranging light-emitting-element array chips in each of which the light emitting elements are arranged in a row in the main scanning direction. In each of the light-emitting-element array chips, a pitch of the light emitting elements arranged in a row is changed from a first pitch to a second pitch, which is different from the first pitch, in a central region of the row of the light emitting elements.

Abstract: An image forming apparatus includes a toner-image-forming unit that forms a toner image by using a first light-emitting-device arrangement and a second light-emitting-device arrangement in each of which light-emitting devices are 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, and 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; a transfer unit that transfers the toner image to a recording medium; a fixing unit that fixes the toner image transferred to the recording medium and finishes the image; 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 posit

Abstract: A light emitting device includes a light-emitting element row that includes light emitting elements arranged in a row in a main scanning direction, an optical element that is used for forming an electrostatic latent image by focusing light outputs of the light emitting elements and exposing a photoconductor to light and a control unit that controls light emission of the light-emitting element row. The light-emitting element row is divided into groups, and the control unit uniformly corrects a light intensity of each of the light emitting elements included in the groups on a group-by-group basis by a first correction method so as to correct density unevenness in the main scanning direction.

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 transmitting apparatus includes a transmitting unit and a controller. The transmitting unit transmits information according to a standard for video image communication. The controller exerts control in such a manner that still image information or information other than still image information is transmitted by using a bus for video image communication. The transmitting unit transmits the still image information or the information other than still image information in accordance with the control exerted by the controller.

Abstract: Provided is an optical scanning head including plural light-emitting element arrays that are arranged along a scanning direction, each of which includes plural light-emitting elements, a light-emitting control unit that outputs a light-emitting timing signal generated based on image information to each light-emitting element of the plural light-emitting element arrays to control light emission of the light-emitting element, a storage unit that is common to the plural light-emitting element arrays and stores a correction value of a light intensity variation due to an arrival time difference between the light-emitting timing signals to the plural light-emitting elements, and a correction unit that corrects the light-emitting timing signal based on the correction value.

Abstract: Provided is an optical scanning head including plural light-emitting element arrays that are arranged along a scanning direction, each of which includes plural light-emitting elements, a light-emitting control unit that outputs a light-emitting timing signal generated based on image information to each light-emitting element of the plural light-emitting element arrays to control light emission of the light-emitting element, a storage unit that is common to the plural light-emitting element arrays and stores a correction value of a light intensity variation due to an arrival time difference between the light-emitting timing signals to the plural light-emitting elements, and a correction unit that corrects the light-emitting timing signal based on the correction value.