| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 399206000 | Slit exposure | 23 |
| 20090324292 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - In an optical scanning device having a lens within a housing, the attachment of the lens to the housing is facilitated. The occurrence of lens distortion and warpage is prevented when the lens is formed by an injection molding apparatus. The lens is a long lens elongated in the main scanning direction for a photoreceptor and has support ends formed at both ends of outside of the lens effective area in the longitudinal direction, and one of the support ends formed at both the ends has a first projection that projects from a side surface in a thickness direction of the lens. The lens is positioned and equipped in the longitude direction of the lens relative to the housing supporting the lens with the first projection in the optical scanning device. | 12-31-2009 |
| 399207000 | Diaphragm, shutter, shading board | 4 |
| 20090052943 | Line Head and Image Forming Apparatus Using the Same - A line head includes: a positive lens system having two lenses with positive refractive power; a lens array in which a plurality of the positive lens systems are arrayed in a first direction; a light emitter array in which a plurality of light-emitting elements are arrayed on an object side of the lens array so as to correspond to the one positive lens system; and an aperture plate that forms an aperture diaphragm at the position of an object-side focal point of the positive lens system. An object-side surface of an object-side lens of the positive lens system is positioned close to the object-side focal point. | 02-26-2009 |
| 20100183335 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH THE SAME - An optical scanning device cover, covering an upper portion of an optical scanning device, includes an exposure window, a close stopper, an open stopper, and a rotation cam plate. A projection to be held in a link portion of a rotation cam is fixedly provided on a shutter. When the rotation cam is rotated in a direction of an arrow R( | 07-22-2010 |
| 20100310274 | Image Forming Apparatus - An image forming apparatus includes: a photoconductive member; a light irradiation unit located below the photoconductive member and configured to irradiate light on the surface of the photoconductive member and form an electrostatic latent image; a developing unit configured to supply a developer to the photoconductive member and form a developer image corresponding to the electrostatic latent image on the surface of the photoconductive member; a transfer belt configured to move between a first position where the transfer belt comes into contact with the photoconductive member and a second position where the transfer belt separates from the photoconductive member and transfer the developer image on the photoconductive member onto a sheet; a driving mechanism including a rotating lever and configured to drive the transfer belt between the first position and the second position; a shutter unit located between the photoconductive member and the light irradiation unit and configured to open and close a light emission surface of the light irradiation unit; and a power transmission mechanism configured to transmit the torque of the lever to the shutter unit and drive the shutter unit. | 12-09-2010 |
| 20160124339 | IMAGE FORMING APPARATUS - A structure in which a shutter is moved in a first direction by a motor, an opening is provided in the shutter, and the shutter is moved in a second direction using an elastic force of a spring connected to an upper cover of a light scanning device and an inside wall at the opening of the shutter increases the size of the structure of the shutter and the structure of the light scanning device due to the position of the spring. Therefore, a recess is provided in an opposing surface of a cover opposing a shutter, and a spring for sliding the shutter is connected to a connection portion provided at the recess. The recess is provided at a side opposite to the light source units with a polygon mirror being interposed therebetween. | 05-05-2016 |
| 399211000 | Scanning carriage parallel to original | 3 |
| 20090154959 | IMAGE SCANNING UNIT AND IMAGE FORMING APPARATUS INCLUDING THE IMAGE SCANNING UNIT - A pair of carriage rails are provided in parallel to each other in a casing. A carriage moves along the carriage rails. Both ends in a longitudinal direction of each of the carriage rails are fixed to the casing. A cross member functioning as a lens base is suspended between the carriage rails. Both ends of the cross member are fixed to a section between both the ends of the carriage rails. Intermediate sections in the longitudinal direction of the carriage rails are coupled to sidewalls of the casing via a coupling section. | 06-18-2009 |
| 20090232553 | IMAGE READING DEVICE AND IMAGE FORMING DEVICE - A copy machine is provided which includes: a fluorescent lamp; a mirror group having a plurality of mirrors that forms a light path by reflecting luminous flux from an original once on each of the plurality of mirrors, and is configured so that an imaging-side mirror, which is disposed most to an imaging side on the light path, has a shortest length in a main scanning direction; an imaging lens that forms an image from luminous flux reflected by the mirror group; a reading portion that reads an image on the original based on image formation by the imaging lens, disposed in an imaging position of the imaging lens; and a casing body that houses the fluorescent lamp, the mirror group, the imaging lens, and the reading portion, to be movable in a sub-scanning direction that is orthogonal to the main scanning direction. | 09-17-2009 |
| 20160150107 | IMAGE READING DEVICE, IMAGE FORMING APPARATUS - To downsize a housing and reduce a possibility that different parts of a cable contact with each other, an image forming apparatus includes a first reading unit configured to move between a movement start position and a movement end position; a second reading unit configured to move at a speed half of a moving speed of the first reading unit in conjunction with movement of the first reading unit; a control portion disposed below the first reading unit and more on the movement end position side than a movement range of the second reading unit; a cable connected from the first reading unit to the control portion via the second reading unit; and a guide member that is formed to project from the second reading unit toward the first reading unit and supports part or all of the cable between the first reading unit and the second reading unit. | 05-26-2016 |
| 399216000 | By pivoting mirror | 15 |
| 20100092213 | OSCILLATOR DEVICE, OPTICAL DEFLECTOR AND IMAGE FORMING APPARATUS USING THE OPTICAL DEFLECTOR - An oscillator device includes an oscillation system, a driving member and a control device, wherein the oscillation system includes a first oscillation movable element, a second oscillation movable element and a support member, the first oscillation movable element being supported by a first elastic supporting element, for torsional oscillation relative to the second oscillation movable element and around an oscillation axis, the second oscillation movable element being supported by a second elastic supporting element, for torsional oscillation relative to the support member and around the oscillation axis, wherein the oscillation system has a first natural oscillation mode of a resonance frequency f | 04-15-2010 |
| 20140376966 | POLYGON MIRROR ASSEMBLY, LIGHT SCANNING UNIT EMPLOYING POLYGON MIRROR ASSEMBLY, AND IMAGE FORMING APPARATUS - A polygon mirror assembly, a light scanning unit employing the polygon mirror assembly, and an image forming apparatus. The polygon mirror assembly includes a polygon mirror formed of a plastic material and having a plurality of reflection surfaces; and a motor unit to support and rotate the polygon mirror, where the polygon mirror is coupled to the motor unit by using an adhesive material. | 12-25-2014 |
| 20150016845 | OPTICAL DEFLECTOR, OPTICAL SCANNING APPARATUS, AND IMAGE FORMING APPARATUS - An optical deflector including a rotary member supported by a bearing shaft and rotatively driven by a motor for deflecting a plurality of laser beams separated from each other in a rotational axis direction of the rotary member is disclosed. The optical deflector includes a polygon mirror having four sides arranged about the rotational axis direction. Each of the four sides is a continuous plane having a plurality of effective reflection areas separated from each other in the rotational axis direction. | 01-15-2015 |
| 20150316871 | OPTICAL DEFLECTOR, OPTICAL SCANNING APPARATUS, AND IMAGE FORMING APPARATUS - An optical deflector including a rotary member supported by a bearing shaft and rotatively driven by a motor for deflecting a plurality of laser beams separated from each other in a rotational axis direction of the rotary member is disclosed. The optical deflector includes a polygon mirror having four sides arranged about the rotational axis direction. Each of the four sides is a continuous plane having a plurality of effective reflection areas separated from each other in the rotational axis direction. | 11-05-2015 |
| 20150338768 | OPTICAL SCANNING APPARATUS, IMAGE FORMING APPARATUS, AND SUPPORT MEMBER FOR AN OPTICAL SCANNING APPARATUS - Provided is an optical scanning apparatus, including: an optical deflector having a polygon mirror reflecting a light flux emitted from a light source to carry out scanning, a drive unit rotating the polygon mirror about a rotation shaft, and a board supporting the drive unit; an optical box to which the board is fixed; two holes provided in the optical box, through which two screws fixing the board are inserted, respectively; two bearing surfaces provided on the optical box at positions around the two holes, respectively, the two bearing surfaces supporting the board; and an abutment portion provided on the optical box and abutting against a portion that is prevented from being pressed by the two screws in the board which is sandwiched between the two screws and the two bearing surfaces so as to be fixed to the optical box. | 11-26-2015 |
| 20160085173 | IMAGE FORMING APPARATUS - The detector that detects a light beam emitted from a light source of a second image forming device and reflected by a polygon mirror, and an adjustment device that performs adjustment processing of adjusting the velocity of the polygon mirror based on an output of the detector are provided. Before a first image forming device performs the image forming processing, the adjustment device performs the adjustment processing while causing the light source of the second image forming device to emit the light beam during a time period including at least a time period in which a photosensitive member of the second image forming device is emitted with the light beam. Before the adjustment processing is finished, the first image forming device starts to move a developing member to a developing position. | 03-24-2016 |
| 20160091818 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - There is provided an optical scanning device and an image forming apparatus including the optical scanning device. The optical scanning device includes an optical box containing light source units, a rotating polygon mirror, and a motor. In order to prevent the entire optical box from being deformed by deformation occurring in the installation region due to heat of the driving unit, the optical box includes a connection region between a second sidewall and an installation region where a driving unit is installed. The optical box further includes regions provided next to the connection region and having heights different from each other. A concave portion is formed in the connection region. | 03-31-2016 |
| 20160103400 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS PROVIDED WITH SAME - An image forming apparatus incudes a driving unit configured to drive a light-emitting element for emitting a laser beam; a rotational polygon mirror scans a photosensitive member with the laser beam. The driving unit executes a first adjustment for causing the light-emitting element to emit light at a first light emission intensity to adjust a first driving current, and a second adjustment for causing the light-emitting element to emit light at a second light emission intensity to adjust a second driving current. During a time period after the polygon mirror has started rotating until a predetermined speed is reached, the driving unit performs the first adjustment and the second adjustment, after the polygon mirror has started rotating and before performing the first adjustment, performs the second adjustment. | 04-14-2016 |
| 20160110634 | LIGHT SCANNING DEVICE AND IMAGE FORMING APPARATUS WITH THE SAME - A light scanning device includes: a first semiconductor laser | 04-21-2016 |
| 20160139533 | LIGHT SCANNING APPARATUS - A light scanning apparatus, including: an optical housing, to which a light source is mounted, configured to hold a deflecting unit and an optical unit therein; a cover member configured to cover the optical housing; a seal member configured to seal between the optical housing and the cover member; a screw configured to fasten the cover member to the optical housing; and a shoulder screw configured to fasten the cover member to the optical housing, wherein the screw fastens the cover member to the optical housing in a first disposition portion on which the deflecting unit is disposed with respect to an opening portion through which the light beam passes, the shoulder screw fastens the cover member to the optical housing in a second disposition portion opposite to the first disposition portion, and the shoulder screw is provided on an outer side with respect to the seal member. | 05-19-2016 |
| 20160147060 | OPTICAL SCANNING UNIT AND IMAGE FORMING APPARATUS - An optical scanning unit includes a rotatable multi-faceted mirror having a plurality of faces reflecting light flux emitted from a light source to scan a scanning area in a main scanning direction. A width of the light flux striking the rotatable multi-faceted mirror is smaller than a length of a face of the rotatable multi-faceted mirror. The entire of light flux striking the rotatable multi-faceted mirror is reflected at a first face when the light flux reflected by the rotatable multi-faceted mirror is directed to the center portion of the scanning area. A part of the light flux striking the rotatable multi-faceted mirror is reflected at the first face while the remaining of the light flux is reflected at a second face when the light flux reflected by the rotatable multi-faceted mirror is directed to a least one of the two end portions of the scanning area. | 05-26-2016 |
| 20160156801 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS THEREWITH | 06-02-2016 |
| 20160161882 | LIGHT SCANNING UNIT AND IMAGE FORMING APPARATUS EMPLOYING THE SAME - A light scanning unit includes a light source unit emitting a light beam according to an image signal, a light deflector scanning the light beam that is deflectively emitted by the light source unit, a housing having a side portion where the light source unit is provided and a base surface on which the light deflector is provided, and a deformation prevention member connecting opposite sides of the housing across an upper side of the base surface. The light scanning unit is employed by an image forming apparatus. | 06-09-2016 |
| 20190146371 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME | 05-16-2019 |
| 20220137528 | LIGHT DEFLECTOR, LIGHT SCANNING APPARATUS AND IMAGE FORMING APPARATUS - A light deflector includes a rotary polygon mirror and a motor to rotate the rotary polygon mirror. The rotary polygon mirror includes reflecting surfaces to reflect light emitted from a light source and a hole portion provided in a rotational axis direction. The motor includes a shaft portion in the hole portion and a support member supporting the rotary polygon mirror. The support member is fixed to, and coaxial with, the shaft portion, and includes an insertion portion in the hole portion. The rotary polygon mirror includes a protruded portion near the hole portion and protruding from at least one reflecting surface orthogonal to the rotational axis direction. The protruded portion includes a fitting portion fitted to the shaft portion or the support member and in which a portion continued from a hole portion surface is protruded toward the rotation center more than the surface forming the hole portion. | 05-05-2022 |
