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:
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 apparatus scans a surface to be scanned in a main scanning direction by simultaneously using a plurality of optical spots formed of a plurality of optical beans emitted from an illuminant, comprising: a light path deflecting part deflecting a light path of at least one of the optical beams, wherein the light path deflecting part is provided in light paths of the optical beams wherein the light path deflecting part may use a liquid crystal deflecting element formed of a liquid crystal element being controllable by an electronic signal to deflect the light path of the one of the optical beams.
摘要:
An image forming apparatus including a plurality of image forming cartridges arranged one above another and configured to form an image on a medium. The apparatus also include a transfer belt support unit, including a transfer belt, hingedly attached to the image forming apparatus at a lower end position of the transfer belt support unit and movable between a first position covering the plurality of the image cartridges and a second position uncovering the plurality of the image forming cartridges. Each of the image forming cartridges is configured to be mounted to or dismounted from the image forming apparatus when the transfer belt support unit is in the second position.
摘要:
A vibration mirror is reciprocatively vibrated by an electrostatic force to reflect an incident light beam. The vibration mirror comprises a reflection means for reflecting the incident light beam; a reflection means holding substrate for holding the reflection means; a torsional rotation shaft comprising rod members rotatably supporting two ends of the reflection means holding substrate; movable electrodes formed on side faces of the reflection means holding substrate supported; a first substrate for supporting the reflection means supporting substrate via the torsional rotation shaft; first fixed electrodes formed on the first substrate so as to face the movable electrodes; a first electrically insulating and separating means formed on the first substrate to electrically insulate and separate the movable electrodes from the first fixed electrodes; and a second substrate overlaid on the first substrate with an insulating layer therebetween so as to be electrically insulated from and overlapped to adhere onto the first substrate.
摘要:
An optical deflecting unit includes a torsion mirror which is pivotable about an axis and has a deflecting reflection surface which receives a light beam at an incident angle inclined with respect to a plane which is perpendicular to the axis and the deflecting reflection surface, and at least one fixed mirror surface confronting the torsion mirror and arranged so that the light beam is reflected between the torsion mirror and the at least one fixed mirror surface a plurality of times. A moving direction of a reflection position of the light beam on the torsion mirror in a sub scan direction reverses.
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 apparatus includes an optical source, a deflection part deflecting an optical beam emitted from the optical source, plural optical elements directing or focusing the optical beam deflected by the deflection part to corresponding one of plural image carrying bodies, a holding member holding the plural optical elements, wherein the optical beam scans the respective image carrying bodies in a main scanning direction, and wherein the holding member includes a pair of holding member elements disposed so as to face each other in the main scanning direction, and the plural optical elements are held between the pair of holding member elements in a bridged state.
摘要:
An exposure device to expose an exposure element includes a light source; an optical system to guide light emitted from the light source to the exposure element; and an optical housing, configured with a plurality of plates, to support the light source and the optical system. At least one of the plurality of plates configuring the optical housing is formed with a plurality of grooves on each of a first face and a second face with a given pitch on the one of the plurality of plates, the first face and the second face being opposite faces with each other. The plurality of grooves are arranged by shifting the center of each of grooves formed on the first face and the center of each of grooves formed on the second face.
摘要:
A module configured to deflect light in an image forming apparatus. A torsion bar supports a mirror and defines a rotational axis of the mirror. A controller is configured to apply electronic pulses to at least one driving device to oscillate the mirror in the module around the rotational axis at a scanning frequency different than a resonance frequency of the mirror.