Patents by Inventor Satoru Miyamoto
Satoru Miyamoto 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).
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Patent number: 6638676Abstract: A full color image forming method including the steps of developing an electrostatic latent image formed on an image bearing member with a color toner to form a color toner image thereon; first transferring the color developer including a color toner image onto an endless intermediate transfer material while applying a developing bias thereto; repeating the above-mentioned steps a plurality of times using a plurality of different color developers to form a full color toner image on the intermediate transfer material; and second transferring the full color image onto a receiving material, wherein a weight of each of the color toner images formed on the image bearing member is from about 0.4 mg/cm2 to about 1.5 mg/cm2, and each of the color developers has a charge quantity not less than 15 &mgr;C/g in an absolute value, and wherein the following relationship is satisfied with respect to each of the first color toner transferring steps: 5.4×Q1+90<Vb−V1<5.Type: GrantFiled: March 4, 2003Date of Patent: October 28, 2003Assignee: Ricoh Company, Ltd.Inventor: Satoru Miyamoto
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Publication number: 20030178514Abstract: A pulverization/classification apparatus including a cylindrical vessel having an inner wall, on a surface of which a layer including a release agent is located; a pulverizer configured to pulverize a material such as toner raw materials in the cylindrical vessel using a compressed air to prepare a particulate material; and a classifier configured to classify the particulate toner material to prepare a powder of the material. Alternatively, the inner wall of the cylindrical vessel has a circumferentially projected portion. A method for manufacturing a powder such as toners using the pulverization/classification apparatus is also provided.Type: ApplicationFiled: March 20, 2003Publication date: September 25, 2003Applicant: RICOH COMPANY, LTD.Inventors: Nobuyasu Makino, Tetsuya Tanaka, Satoru Miyamoto, Shinji Hirata, Mutsumi Takahashi
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Publication number: 20030152853Abstract: A full color image forming method including the steps of developing an electrostatic latent image formed on an image bearing member with a color toner to form a color toner image thereon; first transferring the color developer including a color toner image onto an endless intermediate transfer material while applying a developing bias thereto; repeating the above-mentioned steps a plurality of times using a plurality of different color developers to form a full color toner image on the intermediate transfer material; and second transferring the full color image onto a receiving material, wherein a weight of each of the color toner images formed on the image bearing member is from about 0.4 mg/cm2 to about 1.5 mg/cm2, and each of the color developers has a charge quantity not less than 15 &mgr;C/g in an absolute value, and wherein the following relationship is satisfied with respect to each of the first color toner transferring steps: 5.4×Q1+90 <Vb−V1<5.Type: ApplicationFiled: March 4, 2003Publication date: August 14, 2003Inventor: Satoru Miyamoto
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Patent number: 6562538Abstract: A full color image forming method including the steps of developing an electrostatic latent image formed on an image bearing member with a color toner to form a color toner image thereon; first transferring the color developer including a color toner image onto an endless intermediate transfer material while applying a developing bias thereto; repeating the above-mentioned steps a plurality of times using a plurality of different color developers to form a full color toner image on the intermediate transfer material; and second transferring the full color image onto a receiving material, wherein a weight of each of the color toner images formed on the image bearing member is from about 0.4 mg/cm2 to about 1.5 mg/cm2, and each of the color developers has a charge quantity not less than 15 &mgr;C/g in an absolute value, and wherein the following relationship is satisfied with respect to each of the first color toner transferring steps: 5.4×Q1+90<Vb−V1<5.Type: GrantFiled: January 23, 2002Date of Patent: May 13, 2003Assignee: Ricoh Company, LTDInventor: Satoru Miyamoto
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Publication number: 20030026627Abstract: A rotary developing apparatus having a plurality of developing devices mounted along the outer periphery of a cylindrical rotary unit 2 includes a first gear train 81, 6 and 21 for connecting the rotary unit to a drive source 8 to rotate the rotary unit 2, a second gear train 81, 7, 5 and 4 for connecting a developing roller 3 of a developing device revolved and stopped at a developing position, as a result of the rotary unit 2 being rotationally driven, to the drive source 8 to rotate the developing roller 3, and a drive switching means 9 for switching between the first gear train and the second gear train to connect either of them to the drive source 8.Type: ApplicationFiled: July 3, 2002Publication date: February 6, 2003Applicant: SEIKO EPSON CORPORATIONInventors: Minoru Kishigami, Yasuhiro Matsuo, Satoru Miyamoto
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Patent number: 6495952Abstract: A cathode ray tube includes an electron gun having plural focus electrodes and an anode in its neck portion, a voltage-dividing resistor for producing an intermediate voltage applied to a first one of the focus electrodes adjacent to the anode by dividing an anode voltage, a metal conductor attached to a second one of the focus electrodes to surround the voltage-dividing resistor, and a metal film on an insulating substrate of the voltage-dividing resistor between the metal conductor and an intermediate-voltage terminal of the voltage-dividing resistor. The second one of the focus electrodes is disposed upstream of the first one of the focus electrodes, and the metal film extends at least 1 mm axially and is spaced at least 1 mm from the metal conductor.Type: GrantFiled: February 29, 2000Date of Patent: December 17, 2002Assignees: Hitachi, Ltd., Hitachi Electronic Devices Co., Ltd.Inventors: Hisao Nakamura, Satoru Miyamoto, Atsushi Tsuruoka
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Patent number: 6476544Abstract: A color cathode ray tube includes an electron gun having cathode structures arrayed in line with a cup-shaped first grid electrode. Each of the cathode structures is fused and fixed to a cathode in an electrically insulated state by hermetic glass. A cathode support to which the cathode structures are fixed by glass is fixedly housed in the cup-shaped first grid electrode, and the first grid electrode and the cathode support are welded on an axis along which the cathode structures are arrayed. The cathode structures and the first grid electrode are welded on an inline axis so that the thermal deformation of the cathode support can be made uniform at the center portion and at side portions. Accordingly, at the start-up time of the color cathode ray tube, the cathode currents at the center portion and at the side portions can be equalized and a good color balance can be maintained on the screen.Type: GrantFiled: March 9, 2000Date of Patent: November 5, 2002Assignees: Hitachi, Ltd., Hitachi Electronic Devices Co., Ltd.Inventors: Sakae Ishii, Yasuhisa Shiraishi, Satoru Miyamoto
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Publication number: 20020132176Abstract: A full color image forming method including the steps of developing an electrostatic latent image formed on an image bearing member with a color toner to form a color toner image thereon; first transferring the color developer including a color toner image onto an endless intermediate transfer material while applying a developing bias thereto; repeating the above-mentioned steps a plurality of times using a plurality of different color developers to form a full color toner image on the intermediate transfer material; and second transferring the full color image onto a receiving material, wherein a weight of each of the color toner images formed on the image bearing member is from about 0.4 mg/cm2 to about 1.5 mg/cm2, and each of the color developers has a charge quantity not less than 15 &mgr;C/g in an absolute value, and wherein the following relationship is satisfied with respect to each of the first color toner transferring steps: 5.4×Q1+90<Vb−V1<5.Type: ApplicationFiled: January 23, 2002Publication date: September 19, 2002Applicant: RICOH COMPANY, LTDInventor: Satoru Miyamoto
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Patent number: 6445117Abstract: A cathode ray tube includes an electron gun having a cathode, first and second grid electrodes, plural focus electrodes and an anode electrode fixed by two glass beads; a voltage-dividing resistor attached to one glass bead for producing an intermediate voltage applied to a first one of the plural focus electrodes adjacent to the anode electrode by dividing an anode voltage and a metal conductor attached to one of electrodes of the electron gun disposed upstream of the first one of the plural focus electrodes to surround the voltage-dividing resistor and the glass bead. The voltage-dividing resistor includes an overcoat insulating film, a resistance element and an insulating substrate stacked in the order named from the overcoat insulating film facing the glass bead, and the resistance element includes first-type resistance-forming regions disposed on opposite sides of the metal conductor and a second-type resistance-forming region containing a portion thereof facing the metal conductor.Type: GrantFiled: February 29, 2000Date of Patent: September 3, 2002Assignee: Hitachi, Ltd.Inventors: Satoru Miyamoto, Kazunari Noguchi
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Patent number: 6432590Abstract: A toner including toner particles including at least a binder resin having a first melting point and a first solubility parameter, a colorant and a particulate release agent having a second melting point lower than the first melting point and a second solubility parameter different from the first solubility parameter, wherein the particulate release agent dispersed in the toner particles has an average needle-shape degree LD/SD of not less than 1.6, where LD is a diameter of a particle of the release agent dispersed in the toner in a major axis direction thereof and SD is a diameter of the particle in a minor axis direction.Type: GrantFiled: November 13, 2000Date of Patent: August 13, 2002Assignee: Ricoh Company, Ltd.Inventors: Hideyuki Ueda, Shohichi Sugimoto, Satoru Miyamoto, Osamu Uchinokura, Kumi Hasegawa, Tamotsu Kajihara, Yoshihiro Suguro, Noboru Kuroda
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Patent number: 6433469Abstract: A cathode ray tube includes an evacuated envelope having a panel portion having a phosphor screen, a neck portion and a funnel portion connecting the panel portion and the neck portion; an electron gun housed in the neck portion having a cathode, a first grid electrode, a second grid electrode, plural focus electrodes and an anode arranged in the order named and fixed in predetermined axially spaced relationship by two glass beads; a voltage-dividing resistor attached to one of the two glass beads for producing an intermediate voltage to be applied to a first one of the plural focus electrodes adjacent to the anode by dividing a voltage applied to the anode; and a metal conductor facing and attached to a second one of the plural focus electrodes to surround the voltage-dividing resistor and the one of the two glass beads, the second one of the plural focus electrodes being disposed upstream of the first one of the plural focus electrodes.Type: GrantFiled: February 28, 2000Date of Patent: August 13, 2002Assignees: Hitachi, Ltd., Hitachi Electonic Devices Co., Ltd.Inventors: Atsushi Tsuruoka, Sakae Ishii, Satoru Miyamoto, Hisao Nakamura
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Publication number: 20020098436Abstract: A toner is proposed which includes toner particles and a fluidity-imparting agent and have such characteristics that the toner particles has an average circularity of 0.93 to 0.97, and that a residue of the toner is in an amount of 10 mg or less when 100 g of the toner is sieved with a 500-mesh sieve, which toner is for use in an electrophotographic image formation method using an intermediate image transfer method. A full-color image formation method, using this toner, and an image formation apparatus in which this toner is used are also proposed.Type: ApplicationFiled: December 21, 2001Publication date: July 25, 2002Inventors: Satoru Miyamoto, Satoshi Mochizuki, Tomomi Suzuki, Masami Tomita
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Patent number: 6355389Abstract: A full color image forming method including the steps of developing an electrostatic latent image formed on an image bearing member with a color toner to form a color toner image thereon; first transferring the color developer including a color toner image onto an endless intermediate transfer material while applying a developing bias thereto; repeating the above-mentioned steps a plurality of times using a plurality of different color developers to form a full color toner image on the intermediate transfer material; and second transferring the full color image onto a receiving material, wherein a weight of each of the color toner images formed on the image bearing member is from about 0.4 mg/cm2 to about 1.5 mg/cm2, and each of the color developers has a charge quantity not less than 15 &mgr;C/g in an absolute value, and wherein the following relationship is satisfied with respect to each of the first color toner transferring steps: 5.4×Q1+90<Vb−V1<5.Type: GrantFiled: August 11, 2000Date of Patent: March 12, 2002Assignee: Ricoh Company, Ltd.Inventor: Satoru Miyamoto
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Patent number: 6327046Abstract: An electronic mail processing apparatus includes: a transmitting device for transmitting electronic mails; a receiving device for receiving electronic mails; a selecting device for selecting whether a request for reply to an electronic mail to be transmitted is to be made or not; a reply due date inputting device for inputting a due date of reply when a selection has been made by the selecting device to make the request for reply; a registering device for automatically registering in a memory a predetermined information including an information on presence/absence of the reply to the transmitted mail and the due date of reply; and a displaying device for displaying at least the information on presence/absence of the reply and the due date of reply for each transmitted mail.Type: GrantFiled: June 24, 1998Date of Patent: December 4, 2001Assignee: Sharp Kabushiki KaishaInventors: Satoru Miyamoto, Toshitaka Kaneda
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Publication number: 20010044059Abstract: A toner is proposed which includes toner particles and a fluidity-imparting agent and have such characteristics that the toner particles has an average circularity of 0.93 to 0.97, and that a residue of the toner is in an amount of 10 mg or less when 100 g of the toner is sieved with a 500-mesh sieve, which toner is for use in an electrophotographic image formation method using an intermediate image transfer method. A full-color image formation method, using this toner, and an image formation apparatus in which this toner is used are also proposed.Type: ApplicationFiled: May 24, 2001Publication date: November 22, 2001Inventors: Satoru Miyamoto, Satoshi Mochizuki, Tomomi Suzuki, Masami Tomita
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Patent number: 6294872Abstract: A color cathode ray tube is provided with an electron gun having a voltage-dividing resistor having a stable and good voltage supplying function. The voltage-dividing resistor has an insulating substrate on which a resistor pattern and a terminal-connecting conductive film are formed, and a terminal having a first flange portion, a connecting portion, a tubular portion and a second flange portion. The first flange portion partly has a convex portion for electrical connection to the terminal-connecting conductive film, and the second flange portion is doubled. This construction provides reliable electrical connection between the terminal and the terminal-connecting conductive film.Type: GrantFiled: March 9, 2000Date of Patent: September 25, 2001Assignees: Hitachi, Ltd., Hitachi Electronic Devices Co., Ltd.Inventors: Atsushi Tsuruoka, Sakae Ishii, Hisao Nakamura, Satoru Miyamoto
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Patent number: 6194118Abstract: A color toner comprises a binder resin, a coloring agent, a release agent and a charge controlling agent, wherein the release agent dispersed in the binder resin has an average particle diameter of from about 0.1 to about 2 &mgr;m and wherein a fixed color toner image, which is developed and fixed using the toner, has a Haze factor less than about 20% when the image has an image density of 1.5. The color toner produces images having good image qualities such as good color reproducibility.Type: GrantFiled: November 4, 1999Date of Patent: February 27, 2001Assignee: Ricoh Company Ltd.Inventors: Satoru Miyamoto, Nobutaka Kinoshita, Hiroshi Yaguchi
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Patent number: 5998074Abstract: A color toner comprises a binder resin, a coloring agent, a release agent and a charge controlling agent, wherein the release agent dispersed in the binder resin has an average particle diameter of from about 0.1 to about 2 .mu.m and wherein a fixed color toner image, which is developed and fixed using the toner, has a Haze factor less than about 20% when the image has an image density of 1.5. The color toner produces images having good image qualities such as good color reproducibility.Type: GrantFiled: May 12, 1998Date of Patent: December 7, 1999Assignee: Ricoh Company, Ltd.Inventors: Satoru Miyamoto, Nobutaka Kinoshita, Hiroshi Yaguchi
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Patent number: 5975446Abstract: An apparatus for pulverizing solid particles including an impact-type pulverizing device, a mechanical-type pulverizing device and a piping system connected to the pulverizing devices such that the solid particles may be selectively pulverized in the impact-type pulverizing device and in the mechanical-type pulverizing device successively in this or reverse order.Type: GrantFiled: December 19, 1996Date of Patent: November 2, 1999Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Yaguchi, Masami Tomita, Yasuo Asahina, Hiroyuki Fushimi, Satoru Miyamoto, Tomomi Suzuki
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Patent number: 5919592Abstract: A yellow toner for full-color electrophotography is made of yellow toner particles, each toner particle containing a binder resin and C.I. Pigment Yellow 62 and/or C.I. Pigment Yellow 168 as a yellow coloring agent. The above-mentioned yellow toner is used in combination with a carrier to prepare a two-component yellow developer.Type: GrantFiled: May 19, 1998Date of Patent: July 6, 1999Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Yaguchi, Nobutaka Kinoshita, Satoru Miyamoto