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| Number | Title | Issue Date |
| 8164612 | Light source unit, phase type optical element, and laser beam scanning device A light source unit is disclosed. The light source unit includes a phase type optical element which modulates a phase distribution of laser beams emitted from a light source. The phase type optical element has a phase distribution so that a first ratio of the peak i... | 04/24/2012 |
| 8144178 | Optical scanning apparatus and image-forming apparatus using the same At least one exemplary embodiment is directed to an optical scanning apparatus which includes a Vertical Cavity Surface Emitting Laser including a plurality of light-emitting portions that are spaced from each other in at least a sub-scanning direction, a first opti... | 03/27/2012 |
| 8115793 | Optical scanning device and image forming apparatus using the same An optical scanning device includes at least one scanning unit having a deflector for scanningly deflecting a light beam from a light source, and an imaging optical system for imaging the light beam scanningly deflected by the deflector upon a plurality of photosens... | 02/14/2012 |
| 8089500 | 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 s... | 01/03/2012 |
| 8085289 | Reducing side lobes within optical irradiance distributions used to selectively expose photosensitive surface An optical beam is selectively output towards a scanner in accordance with image data for a scan line of an image. The optical beam has a beam irradiance distribution that is elliptical in shape. The optical beam passes through an aperture stop, ordinarily creating ... | 12/27/2011 |
| 8077193 | Optical scanning device and image forming apparatus using the same An optical scanning device configured to remove or sufficiently reduce ghost light includes an input optical system for directing a light beam from a light source to a deflecting surface of a deflector, and an imaging optical system for imaging a light beam scanning... | 12/13/2011 |
| 8059147 | Exposure apparatus, image forming apparatus and heating method The exposure apparatus is provided with: a substrate; plural light emitting elements that are arranged in a line on a first surface of the substrate; and a heating unit that heats the substrate from the first surface side. ... | 11/15/2011 |
| RE42865 | Image forming system employing effective optical scan-line control device An optical scanning characteristic control method is applied to an optical scanning system in which a beam is deflected, and the deflected beam is converged and directed toward a scanning surface, so that optical scanning of the scanning surface is performed by an o... | 10/25/2011 |
| 7999839 | Laser irradiation apparatus and method of fabricating organic light emitting display using the same Provided are a laser irradiation apparatus and method of fabricating an organic light emitting display using the same. The laser irradiation apparatus includes a mask positioned below the laser generator, and the mask is patterned such that lengths of an upper porti... | 08/16/2011 |
| 7995087 | Optical scanner An optical scanner forms an electrostatic latent image on a photosensitive member by scanning the photosensitive member with a light beam. The optical scanner includes: an incident optical system which at least comprises: a light beam emission device configured to e... | 08/09/2011 |
| 7956884 | Optical scanning device and image forming apparatus In an optical scanning device employing a multi-beam scanning method, a surface emitting laser light source includes laser emission sources; a parallel-plate-like quarter wavelength plate is arranged between the surface emitting laser light source and a first optica... | 06/07/2011 |
| 7952602 | Wide field diode-laser marker with swinging projection-optics Apparatus for laser-marking on tape includes a laser arranged to emit a modulated beam of laser-radiation. Projection-optics are arranged to focus a beam to a spot on the tape. The tape is driven under the focal spot for scanning the beam in the length direction of ... | 05/31/2011 |
| 7952603 | Diode-laser marker with one-axis scanning mirror mounted on a translatable carriage Apparatus for marking a bitmap image on tape includes a source of a modulatable laser-beam. The beam is directed to an oscillating mirror on a carriage translatable across the width direction of the tape. The oscillating mirror directs the beam to a focusing lens mo... | 05/31/2011 |
| 7940292 | Optical scanning device and image forming apparatus An optical scanning device includes a lens having a negative optical power at least in a sub-scanning direction and a lens having a positive optical power at least in the sub-scanning direction between a light source and a deflecting unit. The optical scanning devic... | 05/10/2011 |
| 7929007 | Optical scanning device and image forming apparatus In an optical scanning device of opposite scanning type, two target surfaces for scanning are scanned in opposite main scanning directions by using a single optical deflector. End portions of a scanning lens arranged in a scanning optical system are configured not t... | 04/19/2011 |
| 7872664 | Optical scanning device including shutter member that closes or opens an emission window and image forming apparatus including the optical scanning device An optical scanning device, that outputs a light beam through an emission window in an optical housing to scan a surface, may include a shutter member that closes or opens the emission window. The shutter member may include a first opening, that may allow the light ... | 01/18/2011 |
| 7817176 | Light source device, optical scanning device, and image forming apparatus A disclosed device for optically scanning a target surface includes a light source unit configured to emit a light beam; a light intensity detecting unit; a coupling unit configured to substantially collimate the emitted light beam; a beam limiting unit configured t... | 10/19/2010 |
| 7800639 | Laser pulse image switches Micro-symbols or scenes formed on the optical surfaces of laser diode arrays, MEMS arrays, and optical fiber image tunnel arrays, and the like, allow these devices to function as laser pulse image switches, producing streams of laser pulses, each an image of the mic... | 09/21/2010 |
| 7791632 | Optical scanning device and image forming apparatus using the same An optical scanning device includes two scanning units which are disposed opposed to each other with a scanning deflector arranged therebetween, wherein one scanning unit has first and second imaging optical elements while the other scanning unit has third and fourt... | 09/07/2010 |
| 7787005 | Print head and image forming device using the same A print head includes a plurality of light emitting elements grouped into a plurality of light emitting element groups and disposed by the light emitting group, a lens array having optical systems corresponding respectively to the light emitting element groups, each... | 08/31/2010 |
| 7777774 | Image forming system employing effective optical scan-line control device An optical scanning characteristic control method is applied to an optical scanning system in which a beam is deflected, and the deflected beam is converged and directed toward a scanning surface, so that optical scanning of the scanning surface is performed by an o... | 08/17/2010 |
| 7750931 | Optical scanning apparatus and image forming apparatus using the same Light sources emit light beams onto deflecting surfaces of a deflecting unit through incident optical systems. The deflecting unit deflects the light beams in a uniform direction to form images onto different surfaces to be scanned through imaging optical systems. A... | 07/06/2010 |
| 7733364 | Line head and an image forming apparatus using such a line head A line head, includes: a substrate which is provided with a plurality of luminous element groups which respectively include a plurality of luminous elements in a first direction which emit light beams; a lens array which includes a plurality of imaging lenses which ... | 06/08/2010 |
| 7697022 | Electro-optical device and image forming apparatus An electro-optical device includes a light source array having a plurality of light-emitting devices arranged on a substrate in a direction, a lens array having a plurality of lens elements arranged in the direction, each lens element forming an image on an image ca... | 04/13/2010 |
| 7683922 | Exposure head and an image forming apparatus using the exposure head An exposure head, includes: a first imaging optical system and a second imaging optical system which are arranged in a first direction; a light emitting element which emits light to be imaged by the first imaging optical system; and a light emitting element which em... | 03/23/2010 |
| 7679635 | Image forming apparatus, exposure apparatus and image forming method The image forming apparatus is provided with: plural image carriers; and plural exposure apparatuses that are arranged corresponding to the plural image carriers respectively. The exposure apparatus has a light emitting element member that exposes the image carrier ... | 03/16/2010 |
| 7667726 | Optical writing unit and an image forming apparatus including the same An optical writing unit, e.g., that can be included in an image forming apparatus includes a housing within which are disposed additional components of the optical writing unit including the following, a plurality of optical elements, a polygon mirror configured to ... | 02/23/2010 |
| 7667727 | Multiple-beam raster output scanner with a compensating filter A printing system includes a multiple-beam generator array configured to generate multiple beams. A collimator lens is positioned to receive the multiple beams, and an aperture stop is located where the multiple beams are spatially coincident with each other. A scan... | 02/23/2010 |
| 7589756 | Optical scanning device, image forming apparatus, optical scanning correcting method, and image forming method A beam detecting unit detects at least one of a position of an optical beam in a sub scanning direction and a position of the optical beam in a main scanning direction. A color-misalignment correcting unit changes an optical-beam irradiating position on a photosensi... | 09/15/2009 |
| 7557820 | Optical multi-beam scanning device and image forming apparatus The present invention can be adapted to improve optical efficiency even when a light source is disposed without restricting a polarization direction or an orthogonal direction with respect to an optical axis of a light beam from the light source. A multi-beam optica... | 07/07/2009 |
| 7545403 | Optical system having image direction modulator and LITI apparatus including the system An optical system has an image direction modulator and a laser induced thermal imaging (LITI) apparatus includes the optical system. The optical system includes a laser source for producing laser beams, and the image direction modulator has a first mode in which an ... | 06/09/2009 |
| 7542063 | Laser irradiation apparatus and method of fabricating organic light emitting display using the same Provided are a laser irradiation apparatus and method of fabricating an organic light emitting display using the same. The laser irradiation apparatus includes a mask positioned below the laser generator, and the mask is patterned such that lengths of an upper porti... | 06/02/2009 |
| 7532227 | Optical scanner and image forming apparatus An optical scanner is capable of effectively correcting a difference with respect to the sub-scanning direction between the positions of optical spots for scanning photoconductor drums of a tandem type color image forming apparatus. The optical scanner includes an o... | 05/12/2009 |
| 7528855 | Light scanning device, and image forming apparatus using the light scanning device A light scanning device for performing laser beam scanning, which includes a polygon scanner configured to deflect a laser beam; an optical device configured to guide the deflected laser beam; a case in which the polygon scanner and the optical device are arranged; ... | 05/05/2009 |
| 7525563 | Laser irradiation apparatus and method of fabricating organic light emitting display using the same A laser irradiation apparatus and method of fabricating an organic light emitting display using the same are provided. The laser irradiation apparatus includes: a laser generator; a mask having means for changing a propagation path of a laser beam; and a projection ... | 04/28/2009 |
| 7505060 | Light scanning apparatus having a liquid crystal deflector and image forming apparatus using the same A light scanning apparatus that scans a scanned face with a light beam includes an adjusting unit that adjusts the position of a light spot of the light beam formed on the scanned face, and a compensating unit that compensates the light intensity of the light beam a... | 03/17/2009 |
| 7499071 | Exposure device with a transmissive member and members for shielding the same An exposure device includes a transmissive member and a shutter. The transmissive member allows passage therethrough of a light beam directed toward a scanning object. The shutter is mounted so as to be pivotable around a pivot shaft between a closed position and an... | 03/03/2009 |
| 7463276 | Device for imaging a printing form having an optical correction element A device for imaging a printing form in a printing form exposer, has at least one laser diode bar which has a number of laser diodes, which are each disposed along a line with nonuniform positional deviation. A spacing of the positions projected onto the line of two... | 12/09/2008 |
| 7460145 | Multi-beam pitch adjusting apparatus and image forming apparatus A multi-beam scanning apparatus includes a light source having first and second light source sections that hold a pair of semi-conductor laser diodes and coupling lenses that couple four beams irradiated from the pair of semi-conductor laser diodes with a base membe... | 12/02/2008 |
| 7446794 | Image forming apparatus The optical path of scanning light E1 reaching the photosensitive drum 82a closest to the installation plane S of a plurality of photosensitive drums 82a, 82b, 82c, and 82d is provided at t... | 11/04/2008 |
