| Patent Number |
Title Of Patent |
Date Issued |
| 7236067 |
Surface acoustic wave filter |
June 26, 2007 |
| A surface acoustic wave filter capable of obtaining a low insertion loss and wide bandwidth characteristic is provided. The surface acoustic wave filter includes a piezoelectric substrate; a pair of reflective electrodes formed on the piezoelectric substrate; and a plurality of comb |
| 7157991 |
Surface acoustic wave device having reflectors with both open and shorted electrodes |
January 2, 2007 |
| A surface acoustic wave device for implementing an attenuation characteristic outside of the pass band and the narrow band characteristics, preferably for use as a filter. The surface acoustic wave device includes a piezoelectric substrate, interdigital transducers formed on the piez |
| 7113457 |
Information reproducing system having means for preventing a breakdown thereof caused by abnorma |
September 26, 2006 |
| An information recording medium reproducing system has an insertion opening, a recording medium storing portion and a medium carrying device. Photodetectors are provided for detecting passing of the recording medium and for producing a passing signal when the medium passes. A controller |
| 7071796 |
Surface acoustic wave filter |
July 4, 2006 |
| A surface acoustic wave filter capable of obtaining a low insertion loss and wide bandwidth characteristic is provided. The surface acoustic wave filter includes a piezoelectric substrate; a pair of reflective electrodes formed on the piezoelectric substrate; and a plurality of comb |
| 7002438 |
Surface acoustic wave device with reflection electrodes having pitches that vary |
February 21, 2006 |
| A surface acoustic wave device includes: a substrate; a pair of reflection electrodes that are formed on the substrate; and drive electrodes that are interposed between the reflection electrodes. In this surface acoustic wave device, the pitches in each of the reflection electrodes v |
| 6965282 |
Surface acoustic wave device with two split interdigital transducers connected by specified elec |
November 15, 2005 |
| Improvement on an insertion loss, as well as phase balance, is obtained in surface acoustic wave device. In the surface acoustic wave device, when an aperture length of the electrode fingers of an interdigital transducer for input or an interdigital transducer for output is defined as X, |
| 6683826 |
System for reproducing information recorded on an information recording medium |
January 27, 2004 |
| An information recording medium reproducing system has an insertion opening, a recording medium storing portion and a medium carrying device. Photodetectors are provided for detecting passing of the recording medium and for producing a passing signal when the medium passes. A controller |
| 6587412 |
Apparatus and method for detecting abnormal insertion of disc body |
July 1, 2003 |
| An apparatus for detecting the absence or the presence of the occurrence of the abnormal insertion that a plurality of disc bodies each of which should be inserted separately one by one are inserted consecutively, provided with: a passing detecting device for detecting the passing of the |
| 6574171 |
System for reproducing recording mediums |
June 3, 2003 |
| A first detector is provided for detecting an optical disc inserted in an opening of a reproducing system and for producing a first signal, and a second detector is provided on a reproducing device for detecting the disc carried to the device and for producing a second signal. A sensing |
| 6498548 |
Surface acoustic wave filter with optimized width and pitch of interdigital electrodes and refle |
December 24, 2002 |
| A surface acoustic wave filter is free from any loss arising from the impedance mismatching by finding out optimum values achieving a widened band and lowered loss for the electrode width of the interdigital transducer and reflector electrodes. The surface acoustic wave filter includ |
| 6333901 |
Disc reproducing apparatus for determining a track jump |
December 25, 2001 |
| A disc reproducing apparatus is provided which is adapted to scan information tracks to read information recorded on an information recording medium. This disc reproducing apparatus comprises: determining means capable of determining an actually happened track jump, said determining |
| 6259869 |
Image forming apparatus |
July 10, 2001 |
| An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer |
| 6252832 |
Initializing position for transporting a reproducing apparatus |
June 26, 2001 |
| A system for reproducing recording mediums has a reproducing device, a storing device for storing a plurality of recording mediums, a moving device for relatively moving the reproducing device and storing device for reproducing a recording medium. A controller is provided to be responsiv |
| 6233422 |
Image forming apparatus having transfer drum with transfer paper charging member |
May 15, 2001 |
| An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer |
| 6169862 |
Image forming apparatus with nip time changing device |
January 2, 2001 |
| An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer |
| 6118954 |
Image forming apparatus having transfer roller with charge-removing and cleaning devices |
September 12, 2000 |
| An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer |
| 6081686 |
Image forming apparatus having transfer drum with specific construction |
June 27, 2000 |
| An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer |
| 6026256 |
Image forming apparatus |
February 15, 2000 |
| An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A voltage is applied to a conductive layer provided on an inner side of the transfer drum, and a grounded conductive electrode member is pressed against a dielectric layer |
| 5812923 |
Image forming apparatus equipped with register rollers for curling transfer paper |
September 22, 1998 |
| An image forming apparatus of the present invention includes a photoreceptor drum on which a toner image is formed, a transfer drum for transferring the toner image formed to transfer paper by bringing the transfer paper into contact with the photoreceptor drum, and a pair of registe |
| 5799225 |
Image forming apparatus having variable transfer and attraction voltage |
August 25, 1998 |
| An image forming apparatus includes a transfer drum which attracts and holds a transfer paper electrostatically. A toner image formed on a photosensitive drum is transferred onto the transfer paper when the transfer paper is wound around the transfer drum and brought into contact wit |
| 5740330 |
Exposure controlling method and an exposure controlling apparatus |
April 14, 1998 |
| Representative points are added to peripheral pixels in every black pixel groups. The thus generated representative points are joined by a curve-fitting approximation method to obtain an outlined curve for every black pixel group. One pixel is divided into a multiple number of sub-pi |
| 5697034 |
Image forming apparatus which stably holds a uniform surface potential of a transfer device |
December 9, 1997 |
| An image forming apparatus has a photoreceptor drum whereon a toner image is to be formed, a transfer drum for transferring the toner image to a transfer material by making the transfer material contact with the photoreceptor drum, the transfer drum having a dielectric layer, semicon |
| 5623329 |
Transfer device for an image forming apparatus |
April 22, 1997 |
| An image forming apparatus of the present invention includes a photoreceptor drum on which a toner image is formed, a transfer drum for transferring the toner image to paper by bringing the paper into contact with the photoreceptor drum, the transfer drum having a dielectric layer, a |
