摘要:
A multi-beam light source device includes a vertical cavity surface emitting laser device having monolithically fabricated multiple light sources; an optical sensor to monitor an output of beams of light emitted from the vertical cavity surface emitting laser; a printed circuit board on which a driving circuit is formed to drive the vertical cavity surface emitting laser device based on monitoring signals from the optical sensor; a coupling lens to change the beams of light emitted from the vertical cavity surface emitting laser device to a predetermined state; a transparent board on which a wiring pattern is formed to wire an electrode of the vertical cavity surface emitting laser device and a terminal of the driving circuit; and a holding unit to integrally hold the vertical cavity surface emitting laser device, the optical sensor, the printed circuit board, the coupling device, and the transparent board.
摘要:
In a beam-spot position compensation method for use in an optical scanning device which scans a surface of a photosensitive medium by a light beam emitted by a light source, a plurality of sections are defined by dividing a scanning region on the scanned surface. An emission timing of the light beam for every section is adjusted so that a spacing between beam-spot positions corresponding to pixels of start and end of each section is changed by a predetermined amount. The sparseness or denseness of beam-spot position spacings of the plurality of sections in the whole scanning region is compensated.
摘要:
An optical scanning device includes, in an effective scanning area in the target surface, a mechanism that causes a scanning speed at each scanning position with respect to a scanning speed at an approximately center in the effective scanning area to be within a range under a predetermined condition.
摘要:
An image forming apparatus including a plurality of image forming cartridges removably mounted to an apparatus body one above the other is disclosed. Structural members each partition off a space between nearby image forming cartridges mounted to the apparatus body. The apparatus is capable of obviating banding ascribable to the vibration of the cartridges.
摘要:
An optical scanning device is configured to identify a light-emitting unit at the start of writing on the basis of a sub-scanning resist displacement and selects a combination of four light-emitting units according to the light-emitting unit at the start of writing. The optical scanning device predicts the amount of deformation of pixel according to the combination and adjusts a light volume of light emission from a light-emitting unit to be corrected using the amount of deformation. Thereby, a pixel with an excellent shape quality can be constantly formed regardless of the combination of the light-emitting units and a pixel formed of multiple dots can be accurately and stably formed.
摘要:
A line-imaging lens condenses a light beam from a light-source unit in one direction to form a line image. An optical deflecting unit deflects the light beam passing through the line-imaging lens. An imaging optical unit images the light beam deflected by the optical deflecting unit in a spot shape on a scanning surface to be scanned. An adjusting unit adjusts a position of irradiation of the light beam from the light-source unit on the optical deflecting unit.
摘要:
A disclosed optical scanning apparatus for scanning a scanning surface using a light beam, the optical scanning apparatus comprises: a light source having a plurality of luminous sources; a deflection unit collectively deflecting a plurality of light beams emitted from the plural luminous sources; a light guiding unit guiding at least a portion of each of the plural light beams to a predetermined direction without using the deflection unit; and a photo-detection system receiving the plural guided light beams and the plural deflected light beams and outputting a signal based on the received light beams.
摘要:
An optical scanning unit, includes a light source having a plurality of light emitting sources, a vibration mirror part configured to reciprocatingly scan a light beam emitted from the light source where a torsion bar is a rotational axis, and a recording control part configured to output image information for modulating the light emitting source as corresponding to a scan operation of the vibrating mirror part. Image information corresponding to one line to be recorded is shared by the light sources so that image recording is implemented.
摘要:
An optical scanning module includes a light-emission source emitting a light beam, a movable mirror reflecting the light beam, and a movable mirror driving part that causes the movable mirror to oscillate in first and second opposite directions. A frequency of pixel information supplied to the light-emission source varies in accordance with a primary scanning position of each of pixels.
摘要:
An optical scanning device is configured to identify a light-emitting unit at the start of writing on the basis of a sub-scanning resist displacement and selects a combination of four light-emitting units according to the light-emitting unit at the start of writing. The optical scanning device predicts the amount of deformation of pixel according to the combination and adjusts a light volume of light emission from a light-emitting unit to be corrected using the amount of deformation. Thereby, a pixel with an excellent shape quality can be constantly formed regardless of the combination of the light-emitting units and a pixel formed of multiple dote can be accurately and stably formed.