Patents by Inventor Yasushi Shimizu

Yasushi Shimizu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7440718
    Abstract: A developing apparatus having a developing sleeve provided with an elastic layer on its surface, and for developing an electrostatic image formed on an image bearing member with a mono-component magnetic toner having a mean degree of circularity of 0.965 or greater, a magnet provided in the developing sleeve, and a blade for regulating the amount of the developer carried on the developing sleeve satisfies the expressions |Br|/|B|?0.5 and Nsb/(Bs×R)?0.
    Type: Grant
    Filed: January 26, 2006
    Date of Patent: October 21, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Hagiwara, Kenya Ogawa, Shuji Moriya, Naoto Kichijima, Yasushi Shimizu, Koichi Okuda
  • Publication number: 20080235008
    Abstract: In a masking sound generation apparatus, a CPU analyzes a speech utterance speed of a received sound signal. Then, the CPU copies the received sound signal into a plurality of sound signals and performs the following processing on each of the sound signals. Namely, the CPU divides each of the sound signals into frames on the basis of a frame length determined on the basis of the speech utterance speed. Reverse process is performed on each of the frames to replace a waveform of the frame with a reverse waveform, and a windowing process is performed to achieve a smooth connection between the frames. Then, the CPU randomly rearranges the order of the frames and mixes the plurality of sound signals to generate a masking sound signal.
    Type: Application
    Filed: March 19, 2008
    Publication date: September 25, 2008
    Applicant: Yamaha Corporation
    Inventors: Atsuko ITO, Yasushi Shimizu, Akira Miki, Masato Hata
  • Patent number: 7383003
    Abstract: A developing apparatus includes a developing roller for developing an image with a developer; a non-rotary magnet roll inside the roller; a blade; and an abutting member abutting against the roller, wherein the following expressions are satisfied: |Vs|>|Vdev|, |Br|/|B|?0.5, and L/(BH×R)?0.1, where |Vdev|: a DC component Vdev of a voltage applied to the roller, |Vs|: a DC component Vs of a voltage applied to the member, B(G): the magnetic flux density formed on the surface of the roller at the abutting position by the magnet roll, Br(G): the component of the magnetic flux density B(G) perpendicular to the surface of the roller, and L(mm): the abutting width between the roller and the member, BH(rad): the half value width of the component B?(G) horizontal to the surface of the roller, and R(mm): the radius of the roller.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: June 3, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoto Kichijima, Koichi Okuda, Yasushi Shimizu, Kenya Ogawa, Shuji Moriya, Kazunari Hagiwara
  • Patent number: 7379693
    Abstract: A developing apparatus having a rotatable developing sleeve having an elastic layer on the surface thereof for carrying a mono-component magnetic developer and urged against a photosensitive drum to develop an electrostatic image formed on the drum with the developer, a non-rotary magnet provided inside the sleeve for magnetically attracting the developer to the sleeve, and a blade having an abutting portion abutting against the sleeve in a counter direction for regulating the amount of the developer on the sleeve, a step portion spaced apart from the abutting portion, and a separating portion provided upstream of the step portion in the rotation direction of the sleeve, wherein the surface of the sleeve to which the separating portion is opposed includes a position satisfying |Br|/|B|?0.5, where B(G): the magnitude of magnetic flux density formed on the surface of the sleeve, and Br(G): a component of the magnetic flux density in a direction perpendicular to the surface of the sleeve.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: May 27, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kenya Ogawa, Yasushi Shimizu, Shuji Moriya, Kazunari Hagiwara, Naoto Kichijima, Koichi Okuda
  • Patent number: 7370694
    Abstract: Vertical sectional shapes of portions in which condenser tubes of the upper tube bundle 51 and the lower tube bundle 52 are arranged, in vertical sections of the upper tube bundle 51 and the lower tube bundle 52, are formed to be approximately U-shapes, and a noncondensing air ejection duct 11 is provided to be positioned on a central joint portion of the U-shape of the upper tube portion 51 in an upstream side where circulating water flows first. At a portion in which the condenser tubes are not arranged between the upper and lower tube bundles, steam flow prevention plates 53 are provided to be positioned at both right and left sides of the noncondensing air ejection duct 11.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: May 13, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasushi Shimizu, Shunji Kawano, Yuji Fuki, Yoshihiro Iwata, Yuichi Fukasawa, Yoshio Mochida
  • Publication number: 20070297834
    Abstract: An amount-of-developer regulating apparatus configured to restrict the amount of developer carried on a developer bearing member. The amount-of-developer regulating apparatus includes a flexible developer amount regulation member having a contact portion configured to contact with a developer bearing member, and first and second holding portions configured to hold the developer amount regulation member and to contact with the developer amount regulation member at further upstream and further downstream in a direction where the developer bearing member is rotationally moved than the contact portion. With a pressure distribution of the contact portion as to the developer bearing member, there are a plurality of local maximum values in the direction where the developer bearing member is rotationally moved. Thus, the apparatus can be reduced in size, and also image concentration unevenness after long-term use can be prevented.
    Type: Application
    Filed: June 21, 2007
    Publication date: December 27, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Nishida, Katsunori Yokoyama, Yasushi Shimizu, Kazunari Hagiwara, Katsuhiro Sakaizawa, Rie Endo, Naoto Kichijima
  • Publication number: 20070297833
    Abstract: A sheet-shaped regulation member is supported by a supporting unit with an elastic force occurring by bending a sheet-shaped regulation member in the longitudinal direction thereof, and a force received as a result of being pressed by a developing roller. Thus, direct contact can be securely made onto a developer bearing member, and a regulation member can be provided which enables easily attaching thereof to the supporting member, as well as enabling a developing apparatus, processing cartridge, and image forming apparatus, to be reduced in size.
    Type: Application
    Filed: June 18, 2007
    Publication date: December 27, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Nishida, Kazunari Hagiwara, Yasushi Shimizu, Katsunori Yokoyama, Naoto Kichijima, Hirokazu Usami
  • Patent number: 7274474
    Abstract: To enable data in a WWW server on a network to be directly obtained without passing through an information processing apparatus and to reduce a load which is applied to the network when the data obtained from the WWW server is printed, a digital copier has a function, namely, a Web Pull Printing function for actively accessing to the WWW server, obtaining data of an HTML format in the WWW server, and printing by a self printer. A Web print request to the digital copier by the user is executed through a print utility which is operating on a client.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: September 25, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Koutaro Yamaguchi, Hiroyuki Sato, Yasushi Shimizu
  • Publication number: 20070175761
    Abstract: An electrophoresis apparatus includes a multi-capillary array having a liquid or solid disposed between the capillaries of the array. The liquid or solid exhibits a refractive index higher than that of air and less than that of water and reduces the amount of laser beams scattered by the capillaries. Also provided are methods of adjusting refracted and reflected excitation light beams passing through capillaries of a multi-capillary array, to reduce loss of intensity of the laser beams and increase irradiation of respective samples disposed in the capillaries.
    Type: Application
    Filed: March 6, 2007
    Publication date: August 2, 2007
    Inventors: Ryoji Inaba, Tomohiro Shoji, Shozo Kasai, Masaya Kojima, Yasushi Shimizu, Selichi Ugai, Eric Nordman
  • Patent number: 7251441
    Abstract: A developing apparatus includes a developer carrying member for carrying a developer including one component magnetic toner to develop an electrostatic image formed on an image bearing member. The developer carrying member includes an elastic member contactable to the image bearing member; magnetic field generating means, for attracting the developer to the developer carrying member, and a regulating member for regulating an amount of the developer carried on the developer carrying member. The developer is regulated by the regulating member and applied on the developer carrying member at 5-16 g/mk2. At a position where the regulating member is contacted to the developer carrying member, a magnetic flux density B generated by the magnetic field generating means, and a component Br of the magnetic flux density B normal to a surface of the developer carrying member, satisfy, |Br|/|B|?0.5.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: July 31, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Hagiwara, Kouichi Okuda, Yasushi Shimizu, Kenya Ogawa, Hikaru Osada, Shuji Moriya
  • Patent number: 7250098
    Abstract: An electrophoresis apparatus includes a multi-capillary array having a liquid or solid disposed between the capillaries of the array. The liquid or solid exhibits a refractive index higher than that of air and less than that of water and reduces the amount of laser beams scattered by the capillaries. Also provided are methods of adjusting refracted and reflected excitation light beams passing through capillaries of a multi-capillary array, to reduce loss of intensity of the laser beams and increase irradiation of respective samples disposed in the capillaries.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: July 31, 2007
    Assignees: Applera Corporation, Hitachi, Ltd.
    Inventors: Ryoji Inaba, Tomohiro Shoji, Shozo Kasai, Masaya Kojima, Yasushi Shimizu, Seiichi Ugai
  • Publication number: 20070158195
    Abstract: An electrophoresis apparatus includes a multi-capillary array having a liquid or solid disposed between the capillaries of the array. The liquid or solid exhibits a refractive index higher than that of air and less than that of water and reduces the amount of laser beams scattered by the capillaries. Also provided are methods of adjusting refracted and reflected excitation light beams passing through capillaries of a multi-capillary array, to reduce loss of intensity of the laser beams and increase irradiation of respective samples disposed in the capillaries.
    Type: Application
    Filed: March 6, 2007
    Publication date: July 12, 2007
    Inventors: Ryoji Inaba, Tomohiro Shoji, Shozo Kasai, Masaya Kojima, Yasushi Shimizu, Seiichi Ugai, Eric Nordman
  • Patent number: 7239831
    Abstract: An image forming apparatus includes an image bearing member; a charging device for electrically charging the image bearing member; a rotatable developer carrying member for carrying a developer to develop an electrostatic image formed on the image bearing member with the developer, the developer carrying member being supplied with a developing bias voltage including an AC voltage; non-rotatable magnetic field generating device, disposed inside the developer carrying member, for magnetically attracting the developer on the developer carrying member, wherein the developer carrying member has a surface elastic layer, and the developer carrying member is press-contacted to the image bearing member, and the developer is one component magnetic toner, and a maximum value of an absolute value of the developing bias voltage |V|max and a surface potential of the image bearing member charge by the charging device is Vd(V), satisfy, |V|max=|Vd|.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: July 3, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Hagiwara, Kouichi Okuda, Yasunori Chigono, Yasushi Shimizu, Hikaru Osada, Shuji Moriya
  • Patent number: 7233758
    Abstract: A developing device includes a rotatable developer carrying member for carrying a developer to develop an electrostatic image formed on an image bearing member with the developer; non-rotatable magnetic field generating means, disposed inside the developer carrying member, for magnetically attracting the developer on the developer carrying member; a regulating member for regulating an amount of the developer carried on the developer carrying member, wherein the developer carrying member is provided with a surface elastic layer, and the developer carrying member is press-contacted to the image bearing member, and wherein, the developer is an one component magnetic toner having an average circularity not less than 0.965, and an amount of the developer per unit area of the developer regulated by the regulating member is 5-14 g/m2, and an amount of electric charge thereof is 10-50 ?C/g.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: June 19, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hikaru Osada, Kouichi Okuda, Yasushi Shimizu, Yasunori Chigono, Kenya Ogawa, Shuji Moriya, Kazunari Hagiwara
  • Patent number: 7199907
    Abstract: For the purpose of omitting troublesome operations in page printing, and improving operability, when a page information output mode is specified, a continuous-read mode is automatically started up under specific conditions, and image information having page information added thereto is output from the image output section.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: April 3, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasushi Shimizu
  • Patent number: 7145288
    Abstract: An image display apparatus including a first substrate on which electron sources having electron-emitting devices are arranged, a second substrate forming a display image by being irradiated with electrons, and a spacer disposed between the first substrate and the second substrate, the spacer provided with an insulating substrate and a resistance film covering the insulating substrate. An area deeper in the resistance film into which a penetration of the electron is smaller is set to have lower resistance.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: December 5, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasushi Shimizu
  • Patent number: 7130428
    Abstract: Sound picked up by a microphone of a first sound field is reproduced by a speaker of a second sound field, and a sound picked up by a microphone of the second sound field is reproduced by the speaker of the first sound field. Sound pressure detection section detects a sound pressure of a sound present in the second (or first) sound field picked up by the microphone of the second (or first) sound field, other than a sound reproduced by the speaker of the first (or second) sound field. Other sound pressure detection section detects a sound pressure with which the sound picked up by the microphone of the second (or first) sound field and reproduced by the speaker of the first (or second) sound field is picked up by the microphone of the first (or second) sound field. Sound-pressure-difference detection section adjusts a gain of an automatic gain adjustment section in such a manner that the two detected sound pressures assume a predetermined relationship.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: October 31, 2006
    Assignee: Yamaha Corporation
    Inventors: Toru Hirai, Fukushi Kawakami, Yasushi Shimizu, Yoshikazu Honji, Masahiro Ikeda, Mikio Tohyama
  • Publication number: 20060233573
    Abstract: A developing apparatus having: a rotatable developing roller for developing an electrostatic image with a mono-component magnetic developer at a developing position; a non-rotary magnet roll inside the roller; a blade for regulating the amount of the developer at a developer regulating position; and an abutting member abutting against the roller downstream of the developing position and upstream of the developer regulating position, wherein the following expressions are satisfied: |Vs|>|Vdev|, |Br|/|B|?0.5, and L/(BH×R)?0.
    Type: Application
    Filed: April 12, 2006
    Publication date: October 19, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Naoto Kichijima, Koichi Okuda, Yasushi Shimizu, Kenya Ogawa, Shuji Moriya, Kazunari Hagiwara
  • Publication number: 20060233572
    Abstract: A developing apparatus having a rotatable developing sleeve having an elastic layer on the surface thereof for carrying a mono-component magnetic developer and urged against a photosensitive drum to develop an electrostatic image formed on the drum with the developer, a non-rotary magnet provided inside the sleeve for magnetically attracting the developer to the sleeve, and a blade having an abutting portion abutting against the sleeve in a counter direction for regulating the amount of the developer on the sleeve, a step portion spaced apart from the abutting portion, and a separating portion provided upstream of the step portion in the rotation direction of the sleeve, wherein the surface of the sleeve to which the separating portion is opposed includes a position satisfying |Br|/|B|?0.5, where B(G): the magnitude of magnetic flux density formed on the surface of the sleeve, and Br(G): a component of the magnetic flux density in a direction perpendicular to the surface of the sleeve.
    Type: Application
    Filed: April 12, 2006
    Publication date: October 19, 2006
    Applicant: Canon Kabushiki Kaisha
    Inventors: Kenya Ogawa, Yasushi Shimizu, Shuji Moriya, Kazunari Hagiwara, Naoto Kichijima, Koichi Okuda
  • Patent number: 7120382
    Abstract: To obtain proper output results regardless of the type of recording sheets and obtain the user's desired output results without having the user perform cumbersome operations, the user operates an operating section to select a sheet feeding stage, gives an instruction to start copying, and then a controller section 15 of an image forming apparatus determines whether or not a 180° rotation mode for rotating image data through 180° is set and/or whether or not preprint sheets are used for recording. If the answer is negative, the image data are output based on normal settings. On the other hand, if the answer is affirmative, the image data are output after being rotated through 180°.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: October 10, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasushi Shimizu, Hidehiko Asai, Kazuhiro Kasai