Matches 201 - 250 out of 933 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
6574023 Light-beam deflecting apparatus, manufacturing method of light-beam deflecting apparatus and image-forming apparatus  
A light-beam deflecting apparatus is provided in which a polygon mirror is pushed against a flange to hold it stationary. The light-beam deflecting apparatus includes a base member; a polygon...
6570696 Optical system for scanning and optical scanning apparatus  
An optical system and optical scanning apparatus can form a minute beam spot and big size images. The optical scanning apparatus deflects a beam with a polygon mirror, and focuses the beam on a...
6568811 Color image display device and projection-type image display apparatus  
Belt-like regions illuminated by red, green and blue light beams are formed on an image display panel, and the illuminated regions are moved continuously. Each pixel of the image display panel is...
6563624 Optical scanning apparatus and image-forming apparatus using it  
Provided are an optical scanning apparatus capable of controlling a focus movement amount to a small value on a surface to be scanned, even with change in the oscillation wavelength of light from a...
6559998 Optical scanning apparatus  
Provided is an optical scanning apparatus in which images are formed precisely on the target surface to be scanned with a plurality of beams and low manufacturing cost is realizes. The optical...
6555810 Optical scanning device comprising a plurality of scanning units having one lens in common  
An optical scanning device includes a plurality of optical scanning, units each including a light source emitting a light flux, a scanning input optical system directing the light flux emitted from...
6549318 Optical scanner assembly  
An optical scanner assembly has optical members divided and arranged on the front and reverse surfaces of a base, thereby reducing the size of the base such that the base can be formed of metal...
6542278 Scanning optical apparatus and image-forming apparatus using it  
There are provided a compact scanning optical apparatus optimal for high-definition image recording, which is able to uniformize the spot size in the sub-scanning direction in an effective scanning...
6535317 Light-scanning optical system and image-forming apparatus using it  
A light-scanning optical system and light-scanning apparatus are capable of presenting an image at high speed and with high quality so as to equalize spot sizes throughout an entire surface to be...
6532095 Optical scanner  
Disclosed herein is an optical scanner having a light source, a collimator lens, a first image-forming optics system with a cylindrical lens, and a second image-forming optics system with a...
6532094 Optical scanning lens, optical scanning device and image forming apparatus  
An optical scanning lens used in a scanning and imaging optical system in which a beam deflected by a light deflector is condensed on or in the vicinity of a surface to be scanned. The optical...
6522442 Optical path structure of optical scanner assembly  
An optical scanner assembly in which a pair of Fθ lenses are arranged symmetrically across a single deflector means and a reflector for introducing a light beam from at least one of a plurality of...
6519070 Optical scanning apparatus, multi-beam optical scanning apparatus, and image forming apparatus using the same  
An optical scanning apparatus has an incident optical system for causing a light beam from a light source to be obliquely incident in a sub-scanning cross-section on a deflecting surface of an...
6515782 Telecentric F-theta lens for laser microfilm printer  
A laser microfilm printer ( 170 ) having a telecentric F-theta scan lens ( 166 ) with optical resolution for image pixel sizes 1-5 microns for writing on an image-receiving medium ( 164 ) comprises...
6512623 Scanning optical device  
A scanning optical system includes a light source, a light deflector, a first optical system for making light beam emitted by the light source strike a deflection surface of the light deflector...
6511184 Color image display apparatus  
Three colors of light beams from a light source travel via a first optical system to strike a reflecting surface of a rotating polygon mirror, or mirrors, at different angles without overlapping....
6509995 Optical scanning device, line-image forming optical system therein, imaging adjustment method in the device and image forming apparatus  
A light source emitting a light flux; a coupling optical system couples the light flux from the light source to a subsequent optical system by transforming it into a parallel light flux, an...
6508554 Projection-type image display apparatus  
Red, green and blue light beams from, a light source portion travel via a first optical system and enter a reflecting surface of a rotating polygon mirror at different angles so as not to overlap...
6507427 Scanning optical device and method of regulating imaging position thereof  
A scanning optical device to be used for an image forming apparatus such as a laser beam printer and a digital copying machine comprises a light source such as a semiconductor laser, an optical...
6504639 Optical scanner  
An optical scanner having excellent optical performance and guiding a light beam from one curved mirror directly to a photoconductive drum without requiring a reflecting mirror. The optical scanner...
6501586 Optical scanning apparatus and image-forming apparatus  
Reflected light from a surface not associated with an image is efficiently cut while maintaining rays in a portion associated with formation of an image in a polygon mirror. Among light guided to...
6501585 Multi-beam exposure apparatus  
The invention is structured such as to improve a multi-beam exposure apparatus for scanning a plurality of beams, and provides an exposure apparatus in which no color shifting or no shading and no...
6501584 Sound reduced rotatable polygon assembly  
Mirror ( 1 ) of a laser printhead has an octagonal outer configuration. During normal use the mirror rotates at high speed, causing noise. To reduce the a wall ( 13 a ) surrounds the mirror and has...
6496293 Optical scanning device, scanning optical system, optical scanning method and image forming apparatus  
An aperture shapes a beam from a light source, a light deflector deflects the beam, and a scanning imaging optical system condenses the deflected beam toward a surface to be scanned so as to form a...
6476955 Multi-beam scanning optical system and image forming apparatus using it  
Provided are a multi-beam scanning optical system capable of implementing high-quality printing in relatively simple structure and at high speed, and an image forming apparatus using it. The...
6473216 Optical scanner  
An optical scanner comprises a laser diode which scans laser beam of definite wavelength; first optical element which patterns the beam scanned from the laser diode to an almost parallel beam; a...
6473215 Optical scanner  
In an optical scanner, while a plurality of lens elements comprise scanning lens optics, the angle (θ 46 of the line dropped normal to the first face of a lens element ( 42 ) positioned the...
6469818 Multi-beam scanning optical apparatus and image forming apparatus using it  
Provided are a multi-beam scanning optical apparatus capable of realizing compactification of a synchronism-detecting optical system and high-accuracy synchronism detection based on prevention of...
6466352 High-resolution reading and writing scan system for planar and cylindrical surfaces  
Scan systems include at least one radiation source for directing at least one beam toward a scan-device system. The scan device system includes at least one scan device that reflects these beams as...
6466350 Scanning optical system  
Disclosed is a scanning optical system that includes a semiconductor laser; a polygon mirror that deflects and scans a light beam emitted from the laser; and an imaging optical system that forms a...
6462855 Light beam scanning apparatus  
A pair of sensor patterns detect a passage position in a sub-scan direction of a light beam scanned over a surface of a photosensitive drum. The sensor patterns have, for example, trapezoidal...
6459520 Optical scanning apparatus and image forming apparatus using it  
An optical scanning apparatus includes a light source having a plurality of light-emitting portions arranged as inclined with respect to a main scanning direction, a deflector for deflecting a...
6456415 Optical scanner  
A light beam deflected by a polygon mirror ( 20 ) is incident substantially perpendicularly on a trapezoidal reflecting prism ( 33 ) having an incidence surface ( 33 a ) and two reflection surfaces...
6454169 Methods and apparatus for obtaining and maintaining position information for a rotating optical element in a bar code scanner  
Techniques for determining a position for a rotating optical element, or spinner, of a bar code scanner are described. A diffractive element is positioned so as to be struck by a laser beam...
6452709 Multi-beam exposure unit  
This invention has as its object to provide an image forming apparatus which can provide a color image free from any color misregistration with low cost, and a light scanning unit suitable for the...
6449036 Sensor unit, process and device for inspecting the surface of an object  
A sensor unit ( 50 ), a device, and a process for inspection of a surface ( 10′, 10 Δ) of an object ( 10 ) for the purpose of identifying surface characteristics, such as structural defects. The...
6437897 Laser scanning apparatus  
A laser scanning apparatus has a light source device for emitting a laser beam, a deflector for deflecting the laser beam so as to scan a scanned surface with the laser beam, and a scanning optical...
6433909 Image forming apparatus  
In an image forming apparatus, a plurality of laser beams are emitted by a plurality of laser sources and are scanned onto a recording medium. The laser beams scanned are detected by two...
6429957 Double-pass sagittally offset pre-polygon optics for raster output scanners  
Pre-polygon optics are provided which consist of a compact design such that the number of pre-polygon elements in the pre-polygon optics is reduced while achieving desired light beam...
6429956 Optical scanning device and image forming apparatus having the same  
In an optical scanning device of the present invention, a plurality of light sources emit a plurality of light beams. An optical system has a rotary polygonal mirror deflecting the light beams from...
6426825 Scanning optical system and laser scanning apparatus  
A scanning optical system that images a laser beam on a surface to be scanned, said laser beam being emitted from a light source and deflected by a deflector in order to scan the surface to be...
6426824 Scanning optical system  
A scanning optical system for scanning a light beam on an object surface in a main scanning direction is provided. The scanning optical system includes a light source, a polygonal mirror, and an...
6424447 Optical scanning device  
An optical scanning device for scanning a subject medium with a scanning beam that is oscillated by a polygon mirror along a straight line on the subject medium is provided with a rotational speed...
6424446 Optical scanner and image forming apparatus  
An optical scanner comprises a light source for emitting a light beam, an optical deflector for deflecting the light beam and a scanning optical system for focusing the deflected light beam on a...
6421157 Optical deflection apparatus, production method and adhering method thereof  
An optical deflection apparatus includes: a base member; a coil fixed to the base member; and a rotor unit rotatable to the base member, having a bearing member, a rotating body provided on the...
6414778 Synchronizing signal detecting method and device for multi-beam scanning device  
A multi-beam scanning device is provided with a plurality of light sources that emit a plurality of light beams, respectively, a scanning system that deflects each of the plurality of light beams...
6414777 Optical deflection/scanning apparatus  
An optical deflection/scanning apparatus includes a rotary polygon mirror for reflectively scanning a light beam and a motor for rotating the rotary polygon mirror. The motor has a rotor yoke and a...
6411419 Beam scanning optical apparatus  
A beam scanning optical system which is compact, and in which the advancing direction of beams from deflectors to scanning lenses in a first optical system is reverse to that in a second optical...
6404530 Scanning optical system  
A scanning optical system is provided with a light source, a deflector that deflects a light beam emitted from the light source to scan in a main scanning direction, a scanning lens that converges...
6400488 Light beam scanner  
A polygon mirror is enclosed in an airtight cap that is provided with a polygon window. By having the normal line to the surface of the polygon window tilt a predetermined angle in the main...
Matches 201 - 250 out of 933 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >