| Patent Number |
Title Of Patent |
Date Issued |
| 7593029 |
Optical scanning device and image forming apparatus using the same |
September 22, 2009 |
| An optical deflector of the present invention includes a movable mirror and torsion bars supporting the mirror and formed integrally with the mirror. The mirror reciprocatingly vibrates to reflect a light beam to thereby deflect it. The mirror is curved in the form of an arch in a se |
| 7589878 |
Optical scanning device and image forming apparatus |
September 15, 2009 |
| A common photodetecting unit detects a plurality of beams scanned by a plurality of polyhedral reflection mirrors provided in a multiple stages with a common rotation axis, and generates a synchronization detection signal based on detected beams. The reflection mirrors make a predete |
| 7554708 |
Optical scanning device and image forming apparatus |
June 30, 2009 |
| An optical scanning device includes a first optical element that converts a cross-section shape of a light beam from a semiconductor laser to a desired shape; a second optical element that guides the light beam output from the first optical element to an optical deflector that deflects t |
| 7545547 |
Scanning unit and image forming apparatus |
June 9, 2009 |
| A scanning optical system leads the light fluxes deflected by the polygon mirror to a photosensitive drum. An absolute value of a lateral magnification in a main scanning direction is larger than an absolute value of a lateral magnification in a sub-scanning direction. Moreover, a be |
| 7532227 |
Optical scanner and image forming apparatus |
May 12, 2009 |
| 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 optical axis adjusting |
| 7525561 |
Optical scanner and image forming apparatus |
April 28, 2009 |
| 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 optical axis adjusting |
| 7495813 |
Optical scanning device and image forming apparatus |
February 24, 2009 |
| A vibration mirror used in an optical scanning device has two reflection surfaces on opposite sides. A pair of light beams corresponding to a pair of different colors are irradiated on one reflection surface and another pair of light beams corresponding to another pair of different color |
| 7471434 |
Optical scanning device and image forming apparatus |
December 30, 2008 |
| A common photodetecting unit detects a plurality of beams scanned by a plurality of polyhedral reflection mirrors provided in a multiple stages with a common rotation axis, and generates a synchronization detection signal based on detected beams. The reflection mirrors make a predete |
| 7454528 |
Image output apparatus using close range radio contact wherein radio contact element is attached |
November 18, 2008 |
| An image output apparatus includes a receiving unit that receives first information from a first radio contact element that performs a close-range radio contact; an image processing unit that forms image data of an image to be output from the first information; and an image output un |
| 7443558 |
Optical scanning device and image forming apparatus |
October 28, 2008 |
| An optical scanning device includes a first optical element that converts a cross-section shape of a light beam from a semiconductor laser to a desired shape; a second optical element that guides the light beam output from the first optical element to an optical deflector that deflects t |
| 7417777 |
Optical scanning device and image forming apparatus |
August 26, 2008 |
| A coupling lens arranged on an optical path of an optical beam from a VCSEL, which has a refraction plane and a diffraction plane that respectively change a power according to a temperature change and suppresses a beam-waist position change in a main-scanning direction and a sub-scan |
| 7397591 |
Optical scanner and image forming apparatus |
July 8, 2008 |
| An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side of the scanning lens |
| 7315409 |
Optical scanning device and image forming apparatus using the same |
January 1, 2008 |
| An optical scanning device deflects, by a common optical deflecting part, a plurality of groups of light beams emitted from a plurality of light sources and directs, by a scanning and imaging optical system, the groups of deflected light beams to respective scan surfaces so as to optical |
| 7298537 |
Optical scanner and image forming apparatus |
November 20, 2007 |
| An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side of the scanning lens |
| 7271824 |
Pixel clock generating apparatus, optical writing apparatus using a pixel clock, imaging apparat |
September 18, 2007 |
| A pixel clock generating apparatus includes a data offset circuit and a pixel generator. The data offset circuit defines multiple data blocks, each data block consisting of a predetermined number of successive clocks, and produces phase data for each data block. The phase data repres |
| 7253937 |
Multi-beam optical scanning device and image forming apparatus |
August 7, 2007 |
| A multi-beam scanning device is disclosed that is able to realize a stable and small beam spot and realize stable scanning line intervals between plural light beams. The multi-beam optical scanning device includes a first optical system which has a first lens for coupling the light beams |
| 7245311 |
Image forming apparatus |
July 17, 2007 |
| A photosensitive body has a photosensitive layer. An optical scanning device has a deflector deflecting a light flux emitted from a light source, and scans the surface of the photosensitive body by the thus-deflected light flux. A dot is formed at a center between adjacent light flux |
| 7236281 |
Optical scanner and image forming apparatus |
June 26, 2007 |
| An optical scanner includes a single deflector to optically scan a plurality of target surfaces to be scanned. The deflector has a common rotary axis for deflecting reflective surfaces and is shared by all the beams from a plurality of light sources. The optical scanner includes phot |
| 7218432 |
Optical scanning apparatus and image forming apparatus |
May 15, 2007 |
| A light source which is a surface emitting laser including a plurality of apertures that correspond to light emitting regions arranged in a two-dimensional array and limit the regions, and a scanning optical system satisfies conditions of Dm|.beta.m|<.omega.m and Ds|.beta.s|<.o |
| 7164516 |
Optical scanner and image forming apparatus |
January 16, 2007 |
| An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side of the scanning lens |
| 7154651 |
Optical scanning device and imaging apparatus implementing the same |
December 26, 2006 |
| A multi-beam optical scanning device is disclosed that includes a light source emitting a bundle of rays, a first optical system coupling the rays into diverging rays, a second optical system condensing the diverging rays into linear rays extending in the main scanning direction, a l |
| 7149341 |
Wafer inspection apparatus |
December 12, 2006 |
| A wafer inspection apparatus has a supporting means (10) for rotatably supporting a wafer (W) formed of a disk, a circumferential edge imaging means (40) for imaging a circumferential edge (S) of the wafer (W) that is supported by the supporting means for rotation, a notch imaging means |
| 7145705 |
Optical scanner and image forming apparatus |
December 5, 2006 |
| A scanner which optically scans n positions, where n.gtoreq.2, has m light sources which emits p beams, where 1.ltoreq.m<n and p.ltoreq.1; a unit which splits each beam into q beams in a sub-scanning direction and forms each beam into a predetermined form, where 2.ltoreq.q.ltoreq.n; a |
| 7110016 |
Optical scanner and imaging apparatus using the same |
September 19, 2006 |
| An optical scanner includes a light source modulated based on image data, an optical deflection and scanning part deflecting a light beam emitted from the light source, and a scanning and imaging optical system condensing the deflected light beam toward a scanning surface so as to fo |
| 7106483 |
Optical scanner and image forming apparatus |
September 12, 2006 |
| An optical scanner includes a light source, an optical coupler, an optical line image unit, a deflector, and an optical scanning unit. The optical scanning unit includes scanning lenses that guide the beams to a surface to be scanned. A surface on the deflector side of the scanning lens |
| 7072127 |
Optical scanning lens, optical scanning device and image forming apparatus |
July 4, 2006 |
| An optical scanning lens is used in a scanning and image forming optical system which gathers a light flux deflected by a light deflector in the vicinity of a surface to be scanned. The lens is formed by plastic molding of polyolefin resin, and the following condition is satisfied: 0 |
| 7068296 |
Optical scanning device for reducing a dot position displacement at a joint of scanning lines |
June 27, 2006 |
| In this optical scanning device, a plurality of scanning optical systems are arranged in a main scanning direction. Each of the scanning optical systems includes a deflecting unit performing an optical scanning by oscillation. Scanning frequencies of the deflecting units are substant |
| 7050210 |
Optical scanning device and imaging apparatus implementing the same |
May 23, 2006 |
| An optical scanning device, including a resin lens having a power that is an inverse power of scanning lens placed before a deflector. A bundle of rays emitted from a plurality of light sources is coupled into a desired state by coupling lens, after which the bundle of rays is incident o |
| 6987593 |
Optical scanning device and image forming apparatus using the same |
January 17, 2006 |
| An optical scanning device deflects, by a common optical deflecting part, a plurality of groups of light beams emitted from a plurality of light sources and directs, by a scanning and imaging optical system, the groups of deflected light beams to respective scan surfaces so as to optical |
| 6977762 |
Optical scanning device decreasing amount of change in relative scanning position |
December 20, 2005 |
| An optical scanning device includes a plurality of scanning optical systems configured to scan different scanning surfaces. Each of the scanning optical systems includes a light source configured to emit a light flux, a deflector configured to scan the light flux emitted from the light s |
| 6934061 |
Optical scanner and image reproducing apparatus |
August 23, 2005 |
| An optical scanner includes at least a pair of optical scanning systems and a light deflector used in common between the optical scanning systems, each optical scanning system having a scan lens for guiding the beam deflected from the light deflector onto the associated scanned plane. On |
| 6906739 |
Optical scanner and imaging apparatus using the same |
June 14, 2005 |
| An optical scanner includes a light source modulated based on image data, an optical deflection and scanning part deflecting a light beam emitted from the light source, and a scanning and imaging optical system condensing the deflected light beam toward a scanning surface so as to fo |
| 6903856 |
Optical scanning device decreasing amount of change in relative scanning position |
June 7, 2005 |
| An optical scanning device includes a plurality of scanning optical systems configured to scan different scanning surfaces. Each of the scanning optical systems includes a light source configured to emit a light flux, a deflector configured to scan the light flux emitted from the light s |
| 6870652 |
Optical scanning lens, optical scanning device and image forming apparatus |
March 22, 2005 |
| An optical scanning lens which is used in a scanning and age forming optical system which gathers a light flux deflected by a light deflector in the vicinity of a surface to be scanned. The lens is formed by plastic molding of polyolefin resin, and the following condition is satisfied: |
| 6803941 |
Image forming apparatus with overlapped light fluxes forming a dot |
October 12, 2004 |
| A photosensitive body has a photosensitive layer. An optical scanning device has a deflector deflecting a light flux emitted from a light source, and scans the surface of the photosensitive body by the thus-deflected light flux. A dot is formed at a center between adjacent light flux |
| 6768506 |
Image formation with a reduced recording position deviation between scanning optical systems |
July 27, 2004 |
| An optical scanning device includes a plurality of scanning optical systems arranged in a main scanning direction. Each of the scanning optical systems includes a plurality of light sources emitting light beams, a light source driving circuit modulating the emitted light beams separa |
| 6757089 |
Optical scanning device having a deflection mirror to scan a scanned surface at a constant veloc |
June 29, 2004 |
| An optical scanning device is provided. The optical scanning device comprises a light source, a deflection mirror reflectively deflecting a light beam projected from the light source by performing a sine-wave oscillation, a scanning optical element causing the light beam reflectively |
| 6744545 |
Optical scanning lens, optical scanning device and image forming apparatus |
June 1, 2004 |
| An optical scanning lens is used in a scanning and image forming optical system which gathers a light flux deflected by a light deflector in the vicinity of a surface to be scanned. The lens is formed by plastic molding of polyolefin resin, and the following condition is satisfied: 0 |
| 6657765 |
Optical deflecting unit, optical scanning unit, image forming apparatus, and method of producing |
December 2, 2003 |
| 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 |
| 6462853 |
Optical scanning device |
October 8, 2002 |
| An optical scanning device comprises two transmission optical components each having approximately planar surfaces on both sides thereof. These transmission optical components are disposed so as to have at least one scanning and imaging component inserted therebetween. The first tran |
| 6400391 |
Optical scanning lens, optical scanning device and image forming apparatus |
June 4, 2002 |
| An optical scanning lens is used in a scanning and image forming optical system which gathers a light flux deflected by a light deflector in the vicinity of a surface to be scanned. The lens is formed by plastic molding of polyolefin resin, and the following condition is satisfied: 0 |
| 6198562 |
Multi-beam scanning device and image forming system and method using the same |
March 6, 2001 |
| A multi-beam scanning device includes a plurality of light sources which emit multiple beams. A plurality of coupling lenses couple the multiple beams from the light sources. A converging lens device converts the coupled beams into converging beams, the converging beams being elongated |
| 6104522 |
Optical scanning apparatus with controlled sag and ghost |
August 15, 2000 |
| An optical scanning apparatus includes a light source, a first optical system which includes a coupling lens for coupling a beam from the light source, a polygon mirror for deflecting the beam from the first optical system at a constant angular velocity, and a second optical system which |
