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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 8203588 | Obtaining pressure of an operating environment of a bi-directionally scanning electrographic device for implementing corrections per pressure Methods and apparatus include improving print quality of a bi-directionally scanning electrophotographic (EP) device, such as a laser printer or copy machine, according to ambient pressure in which operated. A moving galvanometer or oscillator reflects a laser beam ... | 06/19/2012 |
| 7995088 | Optical scanning apparatus and image forming apparatus comprising the same A optical scanning apparatus includes a surface emitting type laser diode, a collimator lens which converts the emitted laser beam into an substantially parallel laser beam, a stop member which shapes the substantially parallel laser beam into a desired shape, a pol... | 08/09/2011 |
| 7570279 | Optical scanning apparatus and image forming apparatus A mirror driver drives deflection mirror surfaces into a pivoting action at a frequency belonging to a first drive frequency band in which the high-frequency side of a first resonance frequency band partially overlaps the low-frequency side of a second resonance fre... | 08/04/2009 |
| 7564607 | Light source module, optical scanning device, and image forming apparatus A coupling lens collimates an optical beam emitted from a laser light source. An aperture shields a peripheral light flux area of the collimated optical beam. A phase adjusting element partially changes a phase of wavefront of the optical beam. An auxiliary aperture... | 07/21/2009 |
| 7440002 | Optical scanning apparatus and image forming apparatus A mirror driver drives deflection mirror surfaces into a pivoting action at a frequency belonging to a first drive frequency band in which the high-frequency side of a first resonance frequency band partially overlaps the low-frequency side of a second resonance fre... | 10/21/2008 |
| 7400338 | Image forming apparatus with temperature detection An image forming apparatus including: an optical scanning unit for deflecting and scanning a light on a photosensitive body, the optical scanning unit having: a light source for emitting the light; a deflection section that deflects the emitted light; a driving sect... | 07/15/2008 |
| 7372479 | Apparatus and method for optical image formation control An image forming apparatus for forming images with an electrophotographic system. The image forming apparatus includes a laser drive unit configured to control a laser light, and an image data transfer control unit configured to control image data from to the laser ... | 05/13/2008 |
| 7369298 | Optical scanner and laser image projector using the same Provided are an optical scanner including a micro-mirror having an improved a driving angle by using a micro-electro-mechanical system (MEMS) technique and a laser image projector using the same are provided. The optical scanner includes: a substrate; a mirror unit ... | 05/06/2008 |
| 7342702 | Light deflecting method and apparatus efficiently using a floating mirror Method of deflecting light includes the steps of providing a substrate and forming a supporting member on the substrate. Next forming step forms electrodes at predetermined positions on the substrate. Next forming step forms a plate-like-shaped thin film member incl... | 03/11/2008 |
| 7327378 | Laser scanning unit A laser scanning unit includes a housing; an optical system disposed in the housing and including an optical source which emits a laser beam, a polygonal mirror which scans the laser beam, and a plurality of optical elements which image the laser beam on an image su... | 02/05/2008 |
| 7319475 | Method and apparatus for image forming capable of preventing image quality deterioration induced by heat from an optical deflector An image forming apparatus includes an image bearing member having a photosensitive surface and an optical writing apparatus generating a laser beam modulated according to image data. The optical writing apparatus includes a housing, an optical deflector, an f-theta... | 01/15/2008 |
| 7307650 | Arrangement for, and a method of, reducing image distortion due to electrical interference Electrical interference between resonant, drive and line frequencies in a drive is reduced by selecting the resonant frequency to be non-harmonically related to the drive and line frequencies. The drive is of beneficial use in a lightweight, compact image projection... | 12/11/2007 |
| 7294446 | Digital analog recording using near field optical imaging A data storage device and method of making the storage device wherein a digital and analog image may be stored thereon. The storage device includes a photosensitive layer capable of retaining an optical image thereon, which may be written in a digital format that ca... | 11/13/2007 |
| 7286643 | X-ray tube target balancing features An x-ray assembly is provided comprising a target shaft and an x-ray target element mounted to the target shaft. A circumferential feature is formed in the x-ray target element. At least one weight element is adapted to be securable in a plurality of positions withi... | 10/23/2007 |
| 7280130 | Optical multi-beam scanning device and image forming apparatus An optical multi-beam scanning device has a plurality of pre-deflection optical units, an optical path synthesizing member and an excessive light processing member. The excessive light processing member processes excessive light emitted from an excessive light emitt... | 10/09/2007 |
| 7253830 | Rotary apparatus including a rotation shaft and sleeve having tapped portions, and laser beam printer having the same A rotary apparatus for a polygon mirror has: a sleeve; a rotation shaft which is inserted into the sleeve; the polygon mirror which is fixed to the rotation shaft; a yoke which is fixed to the rotation shaft; permanent magnets which are fixed to the yoke; and a stat... | 08/07/2007 |
| 7248276 | Image-forming device A motor drive device for driving of a plurality of motors in a proper manner, having a first motor, a second motor, and a current controller. The first motor is able to drive at up to a first maximum permissible current of A1. The second motor is able to driv... | 07/24/2007 |
| 7224370 | System and method for communication among embedded devices using visual images A system and method for wireless communication among embedded devices using visual images. More specifically, a signal receiving device uses a visual recording device to locate the signal display screen of a signal transmitting device by employing an alternating ima... | 05/29/2007 |
| 7203441 | Image forming apparatus and method for controlling the pre-rotation of a reflecting member An image forming apparatus includes an input portion to input data, an image forming portion to form a latent image on an image carrying member by irradiating a laser beam onto a reflecting member rotatably driven by a motor and irradiating light reflected by the re... | 04/10/2007 |
| 7190514 | Confocal scanning microscope The present invention provides a confocal scanning microscope whereby fluorescence observations can be made using a plurality of types of excitation light without the need for attaching and detaching a light source to and from the optical fiber. The confocal scannin... | 03/13/2007 |
| 7170542 | System and method for providing high brightness illumination An illumination system includes a plurality of solid state light emitters and a scanner operative to sequentially receive light from the plurality of solid state light emitters and to provide a time-multiplexed light output. The solid state light emitters are each o... | 01/30/2007 |
| 7158163 | Light beam scanning apparatus capable of shortening the standby time and image forming apparatus capable of shortening the standby time A light beam scanning apparatus according to an embodiment of this invention includes a reflection unit for reflecting a light beam, a rotation unit for rotating the reflection unit, a rotation control unit for controlling rotation of the rotation unit, a rotational... | 01/02/2007 |
| 7149017 | Optical deflector There is provided an optical deflector which has a control means for controlling deflection portion so as to deflect a deflection light beam at a desirable maximal deflection angle. According to the optical deflector, a scanning amplitude of the deflection portion c... | 12/12/2006 |
| 7140258 | Magnetic-based force/torque sensor A force transducer element (20) comprises a body (22) of magnetisable material having at least one magnetised region (30) at an angle, say 45°, to the force-sensing direction (P—P). Preferably there are a plurality of parallel magnetised regi... | 11/28/2006 |
| 7133178 | Image forming apparatus and image forming method A printer has a laser emitter for emitting a laser beam to irradiate a surface of a photosensitive member; a reflector for reflecting the laser beam to a target position on the photosensitive member; a driver for moving the reflector; a resolution changeover designa... | 11/07/2006 |
| 7098871 | Optical scanning system with correction A scanning system device has a predetermined aberration as it scans or switches light along selected optical paths. A deformable membrane receives the light and introduces an inverse “aberration” that offsets that of the scanning system. In one embodiment the sc... | 08/29/2006 |
| 7079298 | Optical deflector An optical deflector comprises a control means for controlling at least either a light source or a deflection means adapted to gauge the distance between the position of a deflected beam of light moving on a light receiving element in one direction and the position ... | 07/18/2006 |
| 7068296 | Optical scanning device for reducing a dot position displacement at a joint of scanning lines 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 ... | 06/27/2006 |
| 7054046 | Optical scanning frequency doubling method and apparatus adopting the same An optical scanning frequency doubling method and apparatus adopting the same are provided. According to the method and apparatus, light scanned by a mirror to a predetermined region is fed back to the mirror. The fed back light is output through an output region. T... | 05/30/2006 |
| 7038826 | Movable micro-body A movable micro-body can reduce deflections and show a large permissible angle of twist. The movable micro-body includes a movable plate and one or two torsion bars, the movable plate being supported by a support member with interposition of at least one link member... | 05/02/2006 |
| 7034972 | Optical scanning device and image forming apparatus using the optical scanning device An optical scanning device has an incident optical system that makes a light beam emitted from a light source unit enter to a deflection surface of an optical deflector in a state in which the light beam has a larger width than a width of the deflection surface in a... | 04/25/2006 |
| 7020303 | Feature-based watermarks and watermark detection strategies Processes and apparatus for improving the state of the art for watermarking and data protection. The disclosure includes feature-based watermarks, auto- and cross-correlation techniques for determining scaling and rotation, transitions in time based watermarking, au... | 03/28/2006 |
| 7014378 | Printer and paper feed controller High accuracy is achieved in paper feed control without increasing the size of an encoder, which would result in an increase in cost. The velocity of a paper feeding mechanism is calculated from an edge signal that is generated by the encoder in response to the moti... | 03/21/2006 |
| 7012725 | Polygon mirror, deflecting apparatus, image forming apparatus and method of manufacturing the polygon mirror There is provided a polygon mirror comprising a mirror body shaped in a regular polygon and having circumferential surfaces, a top surface and a bottom surface, a reflection surface formed on each of the circumferential surface, a machining reference surface provide... | 03/14/2006 |
| 7009633 | System and method for laser marking A system for laser printing indicia on a moving web has been disclosed, wherein said system includes an apparatus having one or more laser beam(s) as source(s) of laser energy, a jet of air, an extraction unit and a tunnel with an open entry side and an exit side, a... | 03/07/2006 |
| 7009748 | Resonant scanning mirror with inertially coupled activation A system and method for providing a resonant beam sweep about a first axis. A mirror or reflective surface supported by a first pair of torsional hinges is driven into resonant oscillations about the first axis by inertially coupling energy through the first pair of... | 03/07/2006 |
| 7006268 | Bracket for supporting a torsional hinge mirror with reduced hinge stress The present invention provides methods and apparatus for combining a pivoting mirror and support bracket such that the support bracket transmits little or no stresses to the torsional hinges of the mirror. The bracket includes an isolation slot extending from one ed... | 02/28/2006 |
| 6972883 | Vibration mirror, optical scanning device, and image forming using the same, method for making the same, and method for scanning image A vibration mirror is reciprocatively vibrated by an electrostatic force to reflect an incident light beam. The vibration mirror comprises a reflection means for reflecting the incident light beam; a reflection means holding substrate for holding the reflection mean... | 12/06/2005 |
| 6954312 | Light scanning unit A light scanning unit having a simple structure and a low-priced multi-beam shape is provided. The light scanning unit includes a composite light source in which a plurality of light sources for emitting coherent light having different wavelengths are arranged adjac... | 10/11/2005 |
| 6917130 | Top cover attachable fluid dynamic bearing motor A single thrust bearing fluid dynamic bearing (FDB) design, including a typical dynamic bearing design which has a ring-shaped or circular thrust plate mounted at or near the end of a shaft, wherein the shaft defines together with the surrounding sleeve a journal be... | 07/12/2005 |
