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Ricoh Company, Ltd. Patents
Assignee:
Ricoh Company, Ltd.
Address:
Tokyo, JP
No. of patents:
12364
Patents:












Patent Number Title Of Patent Date Issued
RE43687 Image forming method and system with a finishing capability September 25, 2012
An image forming system of the present invention includes an image forming method and section for forming an image on a sheet fed thereto. A stapler included in a finisher staples a stack of sheets each carrying image formed by the image forming section thereon. A controller causes t
RE43623 Method and apparatus for simulating logic circuits that include a circuit block to which power i August 28, 2012
A logic circuit simulation apparatus used in designing a logic IC (integrated circuit) is provided. The logic circuit simulation apparatus includes a power control signal specifying unit which creates power control signal information for specifying statuses of a plurality of power co
RE43336 Portable electronic terminal apparatus having a plurality of displays May 1, 2012
A portable electronic terminal apparatus includes a main body, an information input mechanism, a plurality of displays, a communications mechanism, and a flip panel. The main body has a hollow section. The information input mechanism inputs various kinds of information including data
RE43016 Variable focal length lens, photographing lens unit, camera, and portable information terminal d December 13, 2011
A negative first group optical system, a positive second group optical system, and a positive third group optical system are sequentially arranged from the object side. A stop moving integrally with the second group optical system is provided on the object side of the second group op
RE42865 Image forming system employing effective optical scan-line control device October 25, 2011
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 optical spot formed
RE42824 Magneto-optical recording medium having a plurality of ferromagnetic thin layers October 11, 2011
A magneto-optical device including a substrate .[.which is.]. transparent to light in a visible spectrum region .[.and.]..Iadd., .Iaddend.a plurality of ferromagnetic layers .[.arranged thereon, each ferromagnetic layer preferably.]. having a width .[.ranging from.]. .Iadd.in an incl
RE42584 Optical disc recording and reproducing apparatus for performing a formatting process as a backgr August 2, 2011
An optical disc recording and reproducing apparatus can record data, which is provided in a packet having a fixed length, on an optical disc without waiting for a long time for a completion of a formatting operation. The optical disc is formatted by a formatting process performed as
RE42334 Smoothing circuit employing charging circuit intermittently charging when input voltage is highe May 10, 2011
A smoothing circuit for realizing the miniaturization and the increase of integration scale of a circuit and for easily varying attack time and release time. This smoothing circuit comprises a capacitor, voltage comparator, charging circuit, and discharging circuit. The voltage compa
RE41934 Image forming system November 16, 2010
An image forming system is disclosed which can prevent toner stain adhered onto an image bearing member at the time of switching from one developing unit to another from adhering to an image area on an intermediate transfer member and which can thereby prevent the deterioration of image
RE41890 Methods for growing semiconductors and devices thereof from the alloy semiconductor GaInNAs October 26, 2010
A method is disclosed for growing a nitrogen-containing Ill-V alloy semiconductor on a semiconductor substrate such as GaAs, which is formed by MOCVD method using nitrogen containing organic compounds having relatively low dissociation temperatures. The alloy semiconductor has a high
RE41875 Computer-based network printing system and method for providing a unique identifier to be input October 26, 2010
A method and computer-based printing system enable a user of a computer to send an image file to a host computer and subsequently to a printer for printing while ensuring that the user is able to retrieve the printed document without other individuals having access to the printed documen
RE41310 Methods for growing semiconductors and devices thereof the alloy semiconductor gainnas May 4, 2010
A method is disclosed for growing a nitrogen-containing III-V alloy semiconductor on a semiconductor substrate such as GaAs, which is formed by MOCVD method using nitrogen containing organic compounds having relatively low dissociation temperatures. The alloy semiconductor has a high
RE41304 Method and apparatus for power supply capable of effectively reducing a power consumption May 4, 2010
A power supply apparatus includes a DC-to-DC converter performing a voltage conversion converting a voltage of a source power supplied from a direct current power source to a first predetermined voltage lower than the voltage of the source power and a voltage regulator carrying out a
RE41176 Liquid crystal display device having electrodes connected at a location close to an outside edge March 30, 2010
A liquid crystal display device including a first substrate having a contact hole and second substrate substantially in parallel with the first substrate. Each substrate has electrodes on an inner side thereof with the electrodes of the first substrate being connected to the electrod
RE40917 Memory configuration of a composite memory device September 15, 2009
The present invention is related to a composite flash memory device comprises a plural sector flash memory array which is divided to plural sector that is a minimum erasing unit of the flash memory device, a flash memory array storing control commands which control a total system of the
RE40677 Facsimile machine having printer unit and interface March 24, 2009
A facsimile machine includes a printer unit for printing out data having a predetermined format, and an interface circuit for converting facsimile image data into recording data having a format in which the printer unit can input the recording data and for supplying the recording data to
RE40644 Modular copying system using light wave, electric wave, or sonic wave interconnections March 3, 2009
A modular copying system including combinations of printer, scanner, and system controller modules formed as independent frames. The scanner module includes devices for image reading, first data I/O and first synchronizing signal generation; the printer module includes devices for im
RE40435 Modular copying system using light wave, electric wave, or sonic wave interconnections July 15, 2008
A modular copying system including combinations of printer, scanner, and system controller modules formed as independent frames. The scanner module includes devices for image reading, first data I/O and first synchronizing signal generation; the printer module includes devices for im
RE40414 Optical pickup apparatus July 1, 2008
Small-sized and light-weighted optical pickup apparatus capable of eliminating the effect due to the flaring light rays and performing the signal detection of high reliability is provided.In the apparatus, the quarter-wave (.lamda./4) plate and the reflection-type birefringent prime
RE40405 Method and apparatus for securing executable programs against copying June 24, 2008
A secure system for executing program code in an insecure environment while making it impossible, or at least impractical, to determine how to copy the program code and associated data is provided. A program memory contains encrypted program data and security circuitry contained within
RE40204 Portable electronic terminal apparatus having a plurality of displays April 1, 2008
A portable electronic terminal apparatus includes a main body, an information input mechanism, a plurality of displays, a communications mechanism, and a flip panel. The main body has a hollow section. The information input mechanism inputs various kinds of information including data
RE40109 Multi-beam optical scanner February 26, 2008
A multi-beam optical scanner, in which a lateral magnification .beta. in a composite system of an optical system between the light source for a multi-beam and the scanned surface satisfies the condition: 2<.beta..ltoreq.8.5, and a plurality of light spots on the scanned surface ex
RE39901 Initialization of phase-change optical recording medium October 30, 2007
A method of initializing a phase-change optical information recording medium is provided, using an optical system incorporating a semiconductor laser device. The laser device is characterized by a specified spatial power distribution. In a spatial distribution of the laser power focused
RE39808 Computer-based network printing system and method September 4, 2007
A method and computer-based printing system enable a user of a computer to send an image file to a host computer and subsequently to a printer for printing while ensuring that the user is able to retrieve the printed document without other individuals having access to the printed documen
RE39513 Demodulation circuit for demodulating wobbling signal March 13, 2007
A device for demodulating position information that is recorded as track wobbling in a record medium by a BPSK scheme includes a carrier-wave-generation circuit which derives a carrier wave from a wobbling signal obtained from the record medium, a phase-adjustment circuit which gener
RE39374 Constant voltage power supply with normal and standby modes November 7, 2006
A first constant voltage circuit includes an operational amplifier having a reference voltage applied to a first input terminal thereof and a voltage obtained as a result of an output voltage being divided applied to a second input terminal thereof, and controls an output transistor
RE38496 Thermosensitive recording material April 13, 2004
A thermosensitive recording material has a support, a thermosensitive recording layer formed thereon, containing an electron-donating coloring compound, an electron-accepting compound a binder resin, and a protective layer formed on the thermosensitive recording layer, which contains an
RE38206 Image transferring device for an image forming apparatus July 29, 2003
A device incorporated in an image forming apparatus for transferring a toner image from a photoconductive element to an intermediate transfer belt and then from the intermediate transfer belt to a sheet or similar recording medium. An electrode member is implemented as a belt drive r
RE38195 Multi-beam optical scanner July 22, 2003
A multi-beam optical scanner, in which a lateral magnification .beta. in a composite system of an optical system between the light source for a multi-beam and the scanned surface satisfies the condition: 2<.beta..ltoreq.8.5, and a plurality of light spots on the scanned surface ex
RE38164 Desktop color copier which includes a revolving type developing device July 1, 2003
A desktop color copier having a size which allows the copier to be placed on a stand when the copier is used. The desktop color copier includes a photoconductive drum for sequentially forming toner images of respective colors thereon, a charger for charging the photoconductive drum, an
RE37845 Thermal recording apparatus using recording sheet made of thermal reversible material September 17, 2002
A thermal recording apparatus records information on a thermal recording sheet, the thermal recording sheet having a thermal characteristic by which the information is recorded through heating the thermal recording sheet to a first temperature and information which has been recorded on
RE37645 Method and apparatus for removing image forming substance from image holding member forming proc April 9, 2002
In a method and an apparatus for removing an image forming substance such as toner from an image holding member such as a sheet of transfer paper, an unstabilizing agent is provided to the image holding member. An attaching state between the image forming substance and the image holding
RE37542 Toner cartridge for a developing device included in an image forming apparatus February 5, 2002
In a developing device included in an image forming apparatus, a toner cartridge has a body and a replenishing member disposed in the body. The cartridge makes it needless to adhere or otherwise affix an elastic piece to the edge of the base of the replenishing member that slidably conta
RE37429 Member for developing electrostatic latent images October 30, 2001
A member for developing electrostatic latent images to visible images is disclosed, which comprises a support, a first coating layer comprising an elastic material formed on the support, and a second coating layer comprising a flexible resin formed on the first coating layer.
RE37197 Device for regenerating printed sheet-like recording medium May 29, 2001
The present invention discloses a device for regenerating a sheet-like recording medium comprising a means for feeding a printed sheet-like recording medium, a regenerating treatment means having a step for eliminating image formed on said recording medium, a means for discriminating
RE37157 Printer with face-down delivery of collated printed sheets at the top, and a manually removable May 1, 2001
A compact printer has a sheet feeder positioned at its front wall and electrophotographic components arranged along a sheet moving path for receiving a sheet from the sheet feeder and for exposing, developing, then transferring a toner image onto the sheet. At its rear side, the printer
RE37093 Optical disk drive unit with a sealing type bearing member March 13, 2001
An optical disk drive unit comprising: a sealing enclosure which encloses from exterior the disk cartridge and an access mechanism for the recording medium in the disk cartridge; an input device for inputting an eject command signal; a pin for moving and arranging a cartridge eject devic
RE37034 Reversible thermosensitive recording material January 30, 2001
A reversible thermosensitive recording material is disclosed, which comprises (a) a support, (b) a reversible thermosensitive recording layer formed thereon which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in the matrix resin,
RE37031 Printer providing security for printout January 30, 2001
A printer accepting print requests from a plurality of users comprising bins storing printout and locks each locking a corresponding one of the bins, wherein the printer locks one of the bins and delivers the printouts to that one of the bins.
RE36963 Method and apparatus for regenerating image holding member November 21, 2000
A predetermined processing liquid is supplied by a liquid supplying unit to a sheet of transfer paper having a surface on which toner is stably attached. An adhesive state of the toner on the transfer paper sheet is changed to an unstable adhesive state. The processing liquid is cons
RE36697 Document feeder which determines a document path using a determined page length May 16, 2000
A document feeder for broad-width originals having a document path in which a moving document is scanned by a stationary scanner. The document feeder is typically mounted to a copier. The document path is either a recycling path or a reciprocating path; the recycling path having a closed
RE36338 Electronic still camera for recording and regenerating image data and sound data October 12, 1999
An electronic still camera has a photographing device for photographing a photographed object and outputting interlaced image data; an image data encoder for encoding the image data, an image recorder for recording the coded image data to a recording medium; a sound converter for convert
RE36301 Image forming apparatus having rotatable electrophotographic process unit September 14, 1999
An image forming apparatus has two units which are engageable with a photoconductive element and provided with a substantially identical configuration. Various electrophotographic process devices including a developing device and a cleaning device and to be arranged around the photoc
RE36124 Fixing apparatus March 2, 1999
A fixing apparatus for fixing an image on a record sheet .[.comprises.]. .Iadd.includes .Iaddend.a fixing roller in which a heater is disposed, a pressing roller urged against the fixing roller, heat pipes extending in either one of the fixing and pressing rollers in a longitudinal direc
RE35640 Reversible thermosensitive recording material October 21, 1997
A reversible thermosensitive recording material is disclosed, which comprises (i) a reversible thermosensitive recording layer which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in the matrix resin, and (ii) a light reflection lay
RE35528 Image recording apparatus having a toner supply tank and a toner recovery tank configured into a June 10, 1997
A xerographic image recording apparatus includes a photosensitive body moved along a circuitous path, an electric discharging unit for eliminating electric charges from the photosensitive body, a precharging unit for charging the photosensitive body electrically, an image writing uni
RE34859 Thermally operated apparatus for making a plate February 14, 1995
A thermally operated plate making apparatus with a capability of producing a plate which carries a plurality of images of a small-size original document side by side thereon by a continuous operation includes a document transport roller pair for transporting an original document, a r
RE34437 Apparatus for forming multicolor electrophotographic images through wet-type developing process November 9, 1993
An apparatus for forming multicolor electrophotographic images through a wet-type developing process has charging, exposure, development, transfer, and cleaning devices disposed around a rotatable latent image carrier. The development device has at least one roller disposed in confrontin
RE33844 Transfer medium separation in a recording apparatus March 10, 1992
A recording apparatus includes an image bearing or forming drum which is driven to rotate in a predetermined direction at constant speed. As the drum rotates, an image is formed on its peripheral surface electrostatically or electrophotographically. The image, developed or undevelope
RE33436 Film feeding system of a camera November 13, 1990
A film advancing system of a camera in which a roll of film inside a film cartridge is first wound to a spool and then the film is rewound into the cartridge one frame from another after each photographic operation is provided. The system includes a reversibly rotatable motor the driveme

 
 
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