Matches 301 - 350 out of 933 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >
Match Document Document Title
6239894 Scanning optical system and image forming apparatus using the same  
A scanning optical system includes a first optical system for shaping a light beam emitted from a light source to form a line image elongated in the same direction as a main scanning direction, a...
6229638 Optical scanning apparatus capable of reducing variations in shading and improving light usage  
An optical scanning apparatus reduces shading and variations in light intensity and significantly increases light usage during an optical scanning process using a simple construction in which a...
6222663 High duty cycle scanner for laser printer  
A scanner for scanning a beam across a surface, such as a photosensitive surface or a document, the scanner comprising: a plurality of multi-faceted polygon disks, mounted for common rotation on...
6222662 Optical scanning device and a scanning lens therefor  
An optical scanning device of the present invention includes a simple scanning lens. At least one of opposite surfaces of the lens has a nonarcuate shape, as seen in a polarization plane. At least...
6219168 Single rotating polygon mirror with adjacent facets having different tilt angles  
A single rotating polygon mirror with adjacent facets having different tilt angles reflects and splits the scanning beam to multiple photoreceptors in a raster output scanning (ROS) system. The...
6219167 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...
6215574 Scanning optical device and multi-beam scanning optical device  
A scanning optical device used for a laser beam printer, a digital copying apparatus or the like, includes a light source for emitting light beam, deflector for deflecting light beam emitted from...
6211990 Optical scanning device  
A laser bar code scanner employing a retroreflector in combination with a rotating polygon reflector to increase scan width and reduce curvature in the scanning beam.
6211987 Optical scanning technique  
An optical scanning system for a printer, for example, includes: an optical scanning unit for scanning light onto an image print region of a photosensitive belt; a photodetector disposed at an edge...
6208450 Scanning optical device  
In a scanning optical device, a light beam emitted from a light source is deflected by a deflector to reach as a light spot a surface to be scanned through a scanning optical system. At least one...
6208448 Scanning optical apparatus  
A scanning optical apparatus constitutes a light source which emits a ray in a wavelength range of 460 to 650 nm, a first lens unit for forming a luminous flux using the ray and having at least one...
6201628 High throughput optical scanner  
A scanning apparatus is provided to obtain automated, rapid and sensitive scanning of substrate fluorescence, optical density or phosphorescence. The scanner uses a constant path length optical...
6201627 Optical scanning device  
An optical scanning device has a rotary polygon mirror and an f-θ lens system which comprises a first lens disposed adjacent to the polygon mirror, a reflection mirror for turning an optical path...
6201625 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...
6201561 Optical scanner, scanning lens and image forming apparatus  
Even if light beams are caused to obliquely become incident on a light deflector, an optical scanner will be constructed of one Fθ lens without bending the center line of the lens. The optical...
6198562 Multi-beam scanning device and image forming system and method using the same  
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...
6198561 Light beam deflection apparatus  
There is described a light beam deflection apparatus in which the distortion of the polygon mirror is reduced, and the mounting accuracy of the polygon mirror is improved. The light beam deflection...
6195190 Optical beam scanning device  
The light beam scanning device has a casing injection molded from magnesium or magnesium alloy as the material. A polygon mirror and a motor are sealed in the inside of the casing and a cover...
6195189 Light beam scanning system  
In a light beam scanning system, a beam shaper shapes light beam emitted from a light source. The shaped light beam is deflected by a deflector to scan a surface in a main scanning direction. A...
6188503 Optical deflector and optical scanner  
Discloses an optical deflector that enables a rotary polygon mirror to rotate at high speed with high reliability and a low noise level, and can prevent the rotary polygon mirror from disengaging...
6185029 Optical scanner and electrophotographic printer employing the same  
An optical scanner comprises a light source, a polygon mirror having plural light deflection faces for deflecting a light flux emitted from the light source, a first optical system for introducing...
6185027 Monitoring optical system for scanning optical device  
A monitoring optical system of the present invention is used in a scanning optical device in which a deflected laser beam by a polygonal mirror is separated from an incident laser beam in an...
6185026 Multi-beam scanning apparatus  
A multi-beam scanning apparatus performs image scanning by emitting multiple beams from a plurality of light sources, which beams are deflected by a common deflector at equiangular velocity. The...
6181455 Cylindrical lens and optical scanning device using the lens  
A cylindrical lens is constructed by a plurality of optical elements for linearly imaging a laser beam. The cylindrical lens is fixed to an optical frame using an adhesive so as to prevent the...
6178031 Raster output scanning system having scan line non-linearity compensation means  
The pixel clock of a raster output scanning (ROS) system modulates an emitted light beam to provide pixel placement along a scan line. A method calculates the pixel clock frequency shifts to...
6178030 Light-scanning optical system having wobble-correcting function and light-scanning apparatus using the same  
In a light-scanning optical system comprising a laser light source 11, a collimating lens 12, a first imaging optical system 1, a second imaging optical system 2, and a surface 19 to be scanned,...
6175440 Laser beam display  
A laser beam display includes at least a first and second plurality of laser beam sources, each of which may preferably be an array of semiconductor lasers, providing a plurality of laser beams in...
6175439 Rotary body for a polygonal mirror type scanner and method of machining the same  
A rotary body for use in a polygonal mirror type scanner includes an element for causing the rotary body to rotate. The element is mounted to a mounting portion by press fitting while a stress...
6172788 Light scanning device, optical device, and scanning method of optical device  
A light scanning device deflects a plurality of light beams by a deflecting means performs divided scanning on a single scanning line on a photoconductor with the plurality of deflected light...
6172787 Laser beam scanning optical apparatus  
A laser beam scanning optical apparatus which images each laser beam emitted from a laser diode array via a deflector and optical elements and scans the laser beam linearly on a scanning surface at...
6172786 Optical deflection device and image forming apparatus therewith  
An optical deflection device includes: a rotor having reflection surfaces on a cirumferential surface thereof; a bearing for rotatably supporting the rotor; a magnet fixed on the rotor; a...
6169623 Raster output scanner with a field replaceable collimator assembly  
A raster output scanner is disclosed which utilizes a collimator assembly which can be replaced at the field. The collimator assembly is mounted on a raster output housing. Both the raster output...
6169620 Mirror mount for a rotor and a method of production of a mirror rotor  
A mirror mount for a rotor provided with a preselected number of external faces suitable for covering with mirrors and an internal structure for connection to an electric motor, in which at least...
6166843 Optical scanning system with single element refractive/reflective fθ lens and single element refractive/reflective fθ lens  
A scanning optical system includes a light deflector and a light emitter which emits a beam of light which scans a scanning surface along a main scanning direction. The beam of light emitted by the...
6166842 Scanning image forming lens and optical scanning apparatus  
A scanning and image forming lens system in an optical scanning apparatus optical scans a surface to be scanned by deflecting a luminous flux emitted from a light source in a direction...
6157478 Multibeam scanning optical apparatus and laser light source apparatus  
In a multibeam scanning optical apparatus of a type where two parallel lines are simultaneously scanned by two laser beams irradiated from two semiconductor lasers, stable images are formed on the...
6154303 Laser scanning system  
A laser scanning system formed by injection molding first and second scanning lenses by using a plastic substance for correcting field curvature at a scanned surface, minimizing focus shift and...
6151152 Reference frequency and facet to facet error correction circuit  
A reference frequency and facet to facet correction circuit utilizes a phase locked loop which includes a digital phase detector to measure the time difference between the end of scan and the end...
6151151 Scanner using a polygonal mirror  
A scanner using a polygonal mirror includes a rotor with a magnet mounted thereon, a rotary shaft on which the rotor is mounted, and a stator with a coil facing the magnet at a preselected...
6144477 Scanning optical system  
In a scanning optical system where a bundle of rays scans a surface to be scanned through an optical deflector and an image forming optical system, the image forming optical system includes a...
6141133 Optical scanning device and a scanning lens therefor  
An optical scanning device of the present invention includes a simple scanning lens. At least one of opposite surfaces of the lens has a nonarcuate shape, as seen in a polarization plane. At least...
6137617 Optical scanner, and image reading apparatus and image forming apparatus using the same  
A high-performance optical scanner in which the fθ characteristics and the field curvature are compensated excellently by shifting an optical deflector by an optimum amount and using a collecting...
6137616 Multi-beam optical scanning device  
A multi-beam optical scanning device capable of suppressing jitter at the image edges within allowable tolerance by satisfying the following equation: ##EQU1## Where r represents the radius of...
6137614 Optical scanner  
An optical scanner can inhibit the quantity of thermal deformation and the variation of an optical path of an optical box attached to the frame of an image information device. In the scanner, a...
6137461 Method and device for displaying a video image and method for the production of said device  
In a device for displaying a video image with a source emitting at least an intensity-modulated light bundle (41, 42) and a deflecting device (41, 42) for deflecting the light bundle, for the...
6135352 Scanning reader of an optical code placed on an article in movement and a method of scanning said optical code by means of said reader  
A scanning reader of an optical code placed on a front wall of an article in movement comprises generators that form at least one first and one second light beam lying on planes inclined by a first...
6134041 Polygonal mirror assembly, laser scanning unit for printer adopting the same, and printer  
A polygonal mirror assembly is provided with a vibration absorption. The polygonal mirror assembly includes a motor and a polygonal mirror rotatably installed around the rotation shaft of the...
6134040 Laser scanning system  
A laser scanning system includes a light source for scanning a modulated beam from a laser diode, a collimator lens for forming the beam from the light source into parallel beam, a slit for...
6130768 Scanning image forming lens and optical scanning apparatus  
A scanning image forming lens in an optical scanning apparatus for optically scanning a surface to be scanned at a constant velocity by deflecting a luminous flux formed as a linear image in a...
6118570 Laser beam scanning optical apparatus  
A laser beam scanning optical apparatus has a focusing lens having different optical powers in the main scanning direction and the sub-scanning direction, moving means for moving the focusing lens...
Matches 301 - 350 out of 933 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >