Patents by Inventor Masataka Naito
Masataka Naito 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: 7182846Abstract: A gas sensor element is provided which is designed to measure the concentration of hydrogen-containing gas accurately. The sensor element includes an oxygen pump cell working to keep the concentration of oxygen contained in measurement gasses entering a measurement gas chamber at a low concentration level and a hydrogen-containing gas measurement cell. The hydrogen-containing gas measurement cell is made up of a proton-conductive solid electrolyte body and a first and a second gas measurement electrode affixed to the proton-conductive solid electrolyte body. The first gas measurement electrode is exposed to the measurement gas chamber and serves to produce a signal between the first and second gas measurement electrodes as a function of the concentration of the hydrogen-containing gas.Type: GrantFiled: May 29, 2003Date of Patent: February 27, 2007Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Keigo Mizutani, Masataka Naito, Daisuke Makino, Kazunori Suzuki
-
Patent number: 7172261Abstract: A printer includes an ink jet head, a recovery unit, a moving unit, a conveying unit and a cover. The ink jet head performs printing on a printing medium and has an ink ejection port on an ejection port forming surface. The recovery unit is used for a recovery process for maintaining an ink ejection state of the ink jet head in a good condition. The recovery unit includes a cap for covering the ejection port forming surface, a wiping member for wiping the ejection port forming surface, and an absorbing member for receiving ink ejected from the ejection port of the ink jet head. The moving unit moves the recovery unit to a position where the recovery unit faces the ink jet head and to a position where the recovery unit does not face the ink jet head, the ejection forming surface of which is oriented toward the printing medium. The conveying unit conveys the printing medium to be printed by the ink jet head. The cover contains the ink jet head and the recovery unit.Type: GrantFiled: October 26, 2004Date of Patent: February 6, 2007Assignee: Canon Finetech Inc.Inventors: Hitoshi Fujimoto, Katsumi Sugiyama, Masataka Naito, Masatoshi Ikkatai, Tsutomu Harada, Tatsuya Fukushima, Takefumi Tamura, Tsuyoshi Mikoshiba
-
Publication number: 20050088481Abstract: A printer includes an ink jet head, a recovery unit, a moving unit, a conveying unit and a cover. The ink jet head performs printing on a printing medium and has an ink ejection port on an ejection port forming surface. The recovery unit is used for a recovery process for maintaining an ink ejection state of the ink jet head in a good condition. The recovery unit includes a cap for covering the ejection port forming surface, a wiping member for wiping the ejection port forming surface, and an absorbing member for receiving ink ejected from the ejection port of the ink jet head. The moving unit moves the recovery unit to a position where the recovery unit faces the ink jet head and to a position where the recovery unit does not face the ink jet head, the ejection forming surface of which is oriented toward the printing medium. The conveying unit conveys the printing medium to be printed by the ink jet head. The cover contains the ink jet head and the recovery unit.Type: ApplicationFiled: October 26, 2004Publication date: April 28, 2005Applicant: Canon Finetech Inc.Inventors: Hitoshi Fujimoto, Katsumi Sugiyama, Masataka Naito, Masatoshi Ikkatai, Tsutomu Harada, Tatsuya Fukushima, Takefumi Tamura, Tsuyoshi Mikoshiba
-
Patent number: 6871936Abstract: In a recovering apparatus for recovering ink ejecting ports forming a plane of an ink jet head, an ink absorbing member is disposed inward of a cap and proximate to the ink ejecting ports, facing the ink ejecting ports at a predetermined distance therefrom. Large ink droplets or water droplets adhering to the ink ejecting ports are then absorbed in the absorbing member. Thereafter, the plane of the ink jet heads with the ink ejecting ports is cleanly wiped by a wiping member, thereby preventing scattering of ink droplets or water droplets away from the ink ejecting ports. A trough is located adjacent to each head, and the recovering apparatus is disposed with respect to the trough so that a distance between the recovering apparatus and the ink jet head can be reduced, thereby permitting a compact arrangement of the recovering apparatus and the ink jet head.Type: GrantFiled: April 14, 2003Date of Patent: March 29, 2005Assignee: Canon Finetech Inc.Inventors: Hitoshi Fujimoto, Katsumi Sugiyama, Masataka Naito, Masatoshi Ikkatai, Tsutomu Harada, Tatsuya Fukushima, Takefumi Tamura, Tsuyoshi Mikoshiba
-
Publication number: 20030221975Abstract: A gas sensor element is provided which is designed to measure the concentration of hydrogen-containing gas accurately. The sensor element includes an oxygen pump cell working to keep the concentration of oxygen contained in measurement gasses entering a measurement gas chamber at a low concentration level and a hydrogen-containing gas measurement cell. The hydrogen-containing gas measurement cell is made up of a proton-conductive solid electrolyte body and a first and a second gas measurement electrode affixed to the proton-conductive solid electrolyte body. The first gas measurement electrode is exposed to the measurement gas chamber and serves to produce a signal between the first and second gas measurement electrodes as a function of the concentration of the hydrogen-containing gas.Type: ApplicationFiled: May 29, 2003Publication date: December 4, 2003Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.Inventors: Keigo Mizutani, Masataka Naito, Daisuke Makino, Kazunori Suzuki
-
Publication number: 20030202036Abstract: To provide a small-sized recovering apparatus for recovering the ink ejecting ports forming plane of an ink jet head, an ink absorbing member disposed inward of a cap comes near to the ink ejecting ports forming plane of the ink jet head with a predetermined distance to face to it. Subsequently, large ink droplets or water droplets adhering to the ink ejecting ports forming plane of the ink jet head are absorbed in the absorbing member. Thereafter, the ink ejecting ports forming plane is cleanly wiped by a wiping member, whereby there does not arise a malfunction that ink droplets or water droplets are scattered away from the ink ejecting ports forming plane of the ink jet head. Since a trough serving as recovering means is located adjacent to each head, a distance of relative displacement between the recovering means and the ink jet head can be reduced, resulting in the whole recovering apparatus being designed and constructed with small dimensions.Type: ApplicationFiled: April 14, 2003Publication date: October 30, 2003Applicant: CANON APTEX INC.Inventors: Hitoshi Fujimoto, Katsumi Sugiyama, Masataka Naito, Masatoshi Ikkatai, Tsutomu Harada, Tatsuya Fukushima, Takefumi Tamura, Tsuyoshi Mikoshiba
-
Publication number: 20010033308Abstract: To provide a small-sized recovering apparatus for recovering the ink ejecting ports forming plane of an ink jet head, an ink absorbing member disposed inward of a cap comes near to the ink ejecting ports forming plane of the ink jet head with a predetermined distance to face to it. Subsequently, large ink droplets or water droplets adhering to the ink ejecting ports forming plane of the ink jet head are absorbed in the absorbing member. Thereafter, the ink ejecting ports forming plane is cleanly wiped by a wiping member, whereby there does not arise a malfunction that ink droplets or water droplets are scattered away from the ink ejecting ports forming plane of the ink jet head. Since a trough serving as recovering means is located adjacent to each head, a distance of relative displacement between the recovering means and the ink jet head can be reduced, resulting in the whole recovering apparatus being designed and constructed with small dimensions.Type: ApplicationFiled: March 10, 1995Publication date: October 25, 2001Inventors: HITOSHI FUJIMOTO, KATSUMI SUGIYAMA, MASATAKA NAITO, MASATOSHI IKKATAI, TSUTOMU HARADA, TATSUYA FUKUSHIMA, TAKEFUMI TAMURA, TSUYOSHI MIKOSHIBA
-
Patent number: 6126343Abstract: A printing medium feeding apparatus comprises a conveying belt, on which a roll-shaped printing medium is placed with the lower surface of the roll being in contact therewith to unwind the outer periphery of the roll. With the arrangement, setup of the roll to the feeding apparatus is completed easily by only placing the roll onto the conveying belt, as compared with a construction in which the center of a roll is rotatably supported. It is also possible to omit or simplify a transmission mechanism such as a train of reduction gears that is necessary for the case of central driving. Further, it is also possible to feed a constant amount of length at a constant drive speed irrespective of radius of the roll.Type: GrantFiled: July 1, 1997Date of Patent: October 3, 2000Assignee: Canon Aptex, Inc.Inventors: Katsumi Sugiyama, Yoshihiko Kitahara, Masataka Naito, Masatoshi Ikkatai, Tsutomu Harada, Tatsuya Fukushima, Hitoshi Fujimoto, Tsuyoshi Mikoshiba, Takefumi Tamura
-
Patent number: 5953035Abstract: A printing apparatus is capable of freely selecting a plurality of sheet feeding units each having a different controlling method. It is discriminated as to which one among plural kinds of sheet feeding units is fitted, and printing and a motor for a sheet feeding-unit are controlled based on the result of the discrimination from an output from a sensor disposed on the sheet feeding unit. Especially, in the case that a roll shaped paper feeding unit is fitted, it is judged that a printing medium reaches the position where printing can be started when a TOF sensor detects black color, and in the case that a cut sheet feeding unit is fitted, it is judged that the recording medium reaches the position where printing can be started when the TOF sensor detects white color.Type: GrantFiled: May 22, 1995Date of Patent: September 14, 1999Assignee: Canon Aptex Inc.Inventors: Yuichi Watanabe, Yoshihiko Kitahara, Hideaki Kishida, Masataka Naito, Masatoshi Ikkatai, Hitoshi Fujimoto
-
Patent number: 5871208Abstract: The present invention provides a sheet convey apparatus with a sheet stacking plate, supply roller for conveying a sheet from the sheet stacking plate, a separating device for separating or supplying the conveyed sheet to a treatment portion, a conveyer for conveying the sheet on the treatment portion, a discharger for discharging the sheet from the treatment portion onto the sheet stacking plate again, and an apparatus body cover. The sheet stacking plate cooperates with the cover to form a substantially horizontal sheet stacking surface and is arranged immediately above the conveyor.Type: GrantFiled: September 25, 1997Date of Patent: February 16, 1999Assignee: Canon Kabushiki KaishaInventors: Katsuaki Hirai, Masataka Naito
-
Patent number: 5819151Abstract: The present invention provides an original feeding apparatus comprising first original feeding means for directing an original to an original reading station from one side thereof in an original-stationary scanning mode in which the original is read while fixing the original at the original reading station, and second original feeding means for directing then original to the original reading station from the other side thereof in an original-through scanning mode in which the original is read while shifting the original along the original reading station.Type: GrantFiled: November 15, 1996Date of Patent: October 6, 1998Assignee: Canon Kabushiki KaishaInventors: Masataka Naito, Yuji Takahashi, Masakazu Hiroi, Yoshinori Isobe, Akimaro Yoshida, Hitoshi Fujimoto, Tomohito Nakagawa
-
Patent number: 5676811Abstract: An air-fuel ratio detecting element is composed of an oxygen pump portion and an oxygen sensor portion which are provided on a single solid electrolyte sheet, a heating element, and a spacer. The oxygen pump portion is composed of a pair first of electrodes provided on opposite sides of the solid electrolyte sheet, and a communication hole which is formed through the solid electrolyte sheet and the electrodes. Electrodes are disposed on the solid electrolyte sheet on the same side as the second electrode, whereby the oxygen sensor portion is formed. The spacer has an opening and a slit-like opening. The heating element 4, the spacer, and the solid electrolyte sheet are stacked from bottom to top, and then the stacked assembly is baked. In this case, they are stacked such that the opening faces the first electrodes and the second electrode.Type: GrantFiled: January 27, 1997Date of Patent: October 14, 1997Assignees: Nippondenso Co., Ltd., Nippon Soken, Inc.Inventors: Daisuke Makino, Hisayoshi Ohta, Keigo Mizutani, Masataka Naito, Masanori Yamada, Masahiro Shibata, Hiromi Sano
-
Patent number: 5579083Abstract: The present invention provides an image forming system having an original-stationary scanning mode and an original-through scanning mode characterized by control means for more shortening a sheet supply distance in the original-through scanning more than that in the original-stationary scanning mode.Type: GrantFiled: March 10, 1995Date of Patent: November 26, 1996Assignee: Canon Kabushiki KaishaInventors: Masataka Naito, Yuji Takahashi, Masakazu Hiroi, Yoshinori Isobe, Akimaro Yoshida, Hitoshi Fujimoto, Tomohito Nakagawa
-
Patent number: 5546168Abstract: A copying apparatus has a recirculating document feeder; an exposure device for scanning and exposing the fed document sheets fed onto the document table by the document recirculating device; an image forming device for forming the images on the scanned and exposed document sheets; and a sheet receiving device for receiving and storing the recording medium sheets carrying images formed by the image forming device.Type: GrantFiled: December 23, 1993Date of Patent: August 13, 1996Assignee: Canon Kabushiki KaishaInventors: Seiichiro Adachi, Masataka Naito, Masakazu Hiroi
-
Patent number: 5455667Abstract: A copying apparatus comprises an original support unit for supporting original sheets, an original transport unit for feeding the originals one by one from the original support unit to an exposure unit, and, after the exposure, discharging the originals to the original support unit, a circulation detecting unit for detecting one circulation of the originals by the original transport unit, a counter for counting the number of originals transported by the original transport unit, a copying unit for effecting exposure in the exposure unit, and copying the image of the exposed original onto a sheet, and a storage unit provided with plural storage devices for storing sheets subjected to the copying by the copying unit.Type: GrantFiled: September 15, 1993Date of Patent: October 3, 1995Assignee: Canon Kabushiki KaishaInventors: Masakazu Hiroi, Masataka Naito, Norifumi Miyake, Tomohito Nakagawa
-
Patent number: 5448345Abstract: A sheet original conveying apparatus conveys a sheet original to a reading position where an image on the sheet original is read. The apparatus have a conveying device for intermittently conveying the sheet original so that images on the sheet original may be read while conveying the sheet original without stopping the sheet original on a platen, and control device for controlling the conveying device to convey the sheet original in such a manner that convey intervals for an initial several pages of the sheet original become greater than a normal convey interval for the remaining pages of the original sheet.Type: GrantFiled: November 5, 1992Date of Patent: September 5, 1995Assignee: Canon Kabushiki KaishaInventors: Nobutaka Uto, Masataka Naito
-
Patent number: 5351112Abstract: An original feeding apparatus has a first original feeding means for directing an original to an original reading station from one side thereof in an original-stationary scanning mode in which the original is read while fixing the original at the original reading station, and a second original feeding means for directing then original to the original reading station from the other side thereof in an original-through scanning mode in which the original is read while shifting the original along the original reading station.Type: GrantFiled: January 8, 1993Date of Patent: September 27, 1994Assignee: Canon Kabushiki KaishaInventors: Masataka Naito, Yuji Takahashi, Masakazu Hiroi, Yoshinori Isobe, Akimaro Yoshida, Hitoshi Fujimoto, Tomohito Nakagawa
-
Patent number: RE35087Abstract: A sheet sorting apparatus with a stapler, includes a plurality of bin trays, bin tray shifting device for moving the plurality of the bin trays stepwisely substantially in the vertical direction to oppose the respective bin trays to a sheet inlet of the sorting apparatus, while expanding the clearance between the bin tray opposed to the sheet inlet and an upper adjacent bin tray to provide a larger clearance than the predetermined clearances, a shaft extending substantially perpendicularly to the extension of the inclined sheet receiving surface, and a stapler, supported rotatably about the shaft and having a stapling head movable to above the sheet receiving surface in a lateral direction by rotation about the shaft and an anvil movable to below the sheet receiving surface by the rotation, for stapling the sheets interposed between the stapling head and the anvil, wherein the bin trays are so disposed that between those ends of adjacent ones of the bin trays which are closer to the sheet inlet are deviated wType: GrantFiled: May 29, 1992Date of Patent: November 14, 1995Assignee: Canon Kabushiki KaishaInventors: Nobutaka Uto, Hironori Shido, Jun Saito, Masakazu Hiroi, Kenji Kobayashi, Koichi Murakami, Masataka Naito
-
Patent number: D370495Type: GrantFiled: November 22, 1994Date of Patent: June 4, 1996Assignees: Canon Kabushiki Kaisha, Canon Aptex Inc.Inventors: Manabu Inoue, Masataka Naito
-
Patent number: D370496Type: GrantFiled: November 22, 1994Date of Patent: June 4, 1996Assignees: Canon Kabushiki Kaisha, Canon Aptex Inc.Inventors: Manabu Inoue, Masataka Naito