Patents by Inventor Tetsuhiro Nitta
Tetsuhiro Nitta 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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Publication number: 20010012028Abstract: A liquid jet apparatus and a recovery apparatus for use in such a liquid jet apparatus. The liquid jet apparatus includes a recording head for discharging a recording liquid from a nozzle, a cap for capping the nozzle of the recording head, suction device for sucking the recording liquid from the nozzle, when the nozzle is capped, and a drive source used specially for driving the cap and the suction device. The cap is capped by driving the drive source in one direction, while the suction means performs suction by driving the drive source in the opposite direction.Type: ApplicationFiled: January 9, 1997Publication date: August 9, 2001Inventor: TETSUHIRO NITTA
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Patent number: 6249295Abstract: The present invention provides a recording apparatus having a detachable automatic sheet supplying apparatus, wherein a projection protruding substantially in a horizontal direction is formed on the recording system or on the automatic sheet supplying apparatus, so that they can stand by themselves; a recess is formed in the automatic sheet supplying appparatus or in the recording system; and the recording system is connected to the automatic sheet supplying apparatus by fitting the projection into the recess.Type: GrantFiled: February 18, 1994Date of Patent: June 19, 2001Assignee: Canon Kabushiki KaishaInventors: Takehiko Kiyohara, Atsushi Noda, Yoji Ara, Makoto Kashimura, Hiroyuki Hagiwara, Tetsuhiro Nitta, Yasuhiro Unosawa
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Patent number: 6196659Abstract: An ink jet recording apparatus comprises a carriage having a recording liquid discharge unit provided with recording liquid discharge openings for discharging recording liquid and a processing liquid discharge unit provided with processing liquid discharge openings for discharging processing liquid to process recording liquid arranged therefor to perform the movement thereof, wiping member for use of recording liquid dedicated to wiping the surface having the recording liquid discharge openings arranged therefor when the movement of the carriage is suspended, and wiping member for use of processing liquid dedicated to wiping the surface having the processing liquid discharge openings arranged therefor when the movement of the carriage is suspended. For this ink jet recording apparatus, the dedicated wiping by the wiping member for use of recording liquid and by the wiping member for use of processing liquid are executed, respectively, by changing the stopping position of the carriage.Type: GrantFiled: December 2, 1997Date of Patent: March 6, 2001Assignee: Canon Kabushiki KaishaInventor: Tetsuhiro Nitta
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Patent number: 6164754Abstract: A liquid discharging apparatus using a liquid discharging head for discharging a liquid, including a cleaning unit for cleaning a nozzle section of the liquid discharging head. The cleaning unit is formed of an elastic pillar member not absorbing the liquid and is elastically deformed when it comes into contact with a face including the nozzle section of the liquid discharging head. The liquids which are discharged through the liquid discharging head include an ink and a printability improving solution which makes the dye or pigment insoluble or coagulates the dye or pigment in the ink.Type: GrantFiled: November 4, 1997Date of Patent: December 26, 2000Assignee: Canon Kabushiki KaishaInventors: Daisaku Ide, Isao Ebisawa, Tetsuhiro Nitta, Norihiro Kawatoko
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Patent number: 6155666Abstract: An in ink jet printing method and apparatus are disclosed which prevents mixing of ink with a liquid insolubilizing and/or agglomerating the ink and which can print images having excellent water resistance and high quality. Prevention of mixing of the ink with the liquid is achieved by separately arranging an ink receiver for receiving ink ejected by preliminary ejection and the liquid insolubilizing and/or agglomerating the ink ejected by preliminary ejection, or by setting the distance between the ink jet cartridge for the liquid and the cartridge for ink adjacent thereto is made larger than the distance between two adjacent ink jet cartridges. Alternatively, the direction of ejecting ports of an ink jet ejectors may be deviated.Type: GrantFiled: August 10, 1995Date of Patent: December 5, 2000Assignee: Canon Kabushiki KaishaInventors: Hitoshi Sugimoto, Makoto Torigoe, Jiro Moriyama, Shigeyasu Nagoshi, Hiroshi Tajika, Toshiharu Inui, Tetsuhiro Nitta, Kiichiro Takahashi, Fumihiro Gotoh, Masaya Uetsuki, Hiroshi Yoshino, Masao Kato, Minako Kato
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Patent number: 6076923Abstract: To assure that the space efficiency of a recording apparatus can be improved, the length of each of cables to be electrically connected to a mechanism section can be optimized, and the recording apparatus having excellent handling properties can be produced with small dimensions at a reduced cost, a controlling section for controlling a mechanism section substantially composed of an automatic feeding section, a conveying section, a discharging section and a recording section, each of which is associated with a recording operation to be performed by the recording apparatus, is arranged above the mechanism section.Type: GrantFiled: September 12, 1997Date of Patent: June 20, 2000Assignee: Canon Kabushiki KaishaInventors: Makoto Kashimura, Shinji Kanemitsu, Makoto Takemura, Toshiyuki Ohnishi, Tetsuhiro Nitta, Yasuhiro Unosawa, Satoshi Saikawa, Hiroshi Yoshino
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Patent number: 6010204Abstract: A recording apparatus having a carriage which scans along a guide shaft and which is provided with recording heads includes a position detector for detecting the positions of the carriage in the scanning direction; and a fixing device for engaging with the carriage to regulate the carriage in the scanning direction when it is detected by the position detector that the carriage is in a given fixing position and fixing the carriage in the given fixing position. With the structure thus arranged, this recording apparatus is capable of preventing the carriage from being bent or deformed when the ink tanks and recording heads are detachably mounted or the gap adjustment for the recording heads are executed on the carriage, thus enabling the operation and positioning of the carriage to be executed exactly.Type: GrantFiled: September 18, 1996Date of Patent: January 4, 2000Assignee: Canon Kabushiki KaishaInventors: Hisashi Morioka, Shinji Kanemitsu, Makoto Kashimura, Makoto Takemura, Shinya Matsui, Toshiyuki Onishi, Tetsuhiro Nitta, Yasuhiro Unosawa, Masaru Sato, Hiroshi Yoshino
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Patent number: 6008824Abstract: A sheet feeding device and a recording apparatus using such a sheet feeding device include a feed mechanism for feeding a sheet material, a guide mechanism for guiding the end portions of the sheet material, which is shiftable in the width direction of the sheet material, and a discharge mechanism for discharging the sheet material being fed. The discharge mechanism is capable of changing its positions in accordance with the shift of the guide.Type: GrantFiled: April 7, 1995Date of Patent: December 28, 1999Assignee: Canon Kabushiki KaishaInventor: Tetsuhiro Nitta
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Patent number: 5992970Abstract: The present invention provides a recording apparatus which can determine a position of a carriage on which a recording head is mounted with high accuracy without enhancing positional accuracy of a carriage position detecting system. In this recording apparatus, a rod-like member is moved upwardly to be engaged by a recessed portion formed in the carriage. A deviation amount of the carriage generated by such engagement is detected by a linear encoder and is used as a correction value when the carriage is moved next time.Type: GrantFiled: January 24, 1997Date of Patent: November 30, 1999Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Unosawa, Makoto Kashimura, Makoto Takemura, Toshiyuki Onishi, Tetsuhiro Nitta, Satoshi Saikawa, Hiroshi Yoshino
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Patent number: 5992966Abstract: An ink jet recording apparatus comprises an ink cap for capping an ink discharge port to discharge ink containing coloring material, a processing liquid cap for capping a processing liquid discharge port to discharge processing liquid for processing ink and preventing means for preventing the ink cap from capping the processing liquid discharge port or preventing means for preventing the processing liquid cap from capping the ink discharge port. With the structure thus arranged, it is made possible to avoid any insolubilization of coloring material contained in ink against solvent, thus maintaining the performance of such ink jet recording apparatus in good condition at all times for the excellent formation of images to be recorded.Type: GrantFiled: November 21, 1997Date of Patent: November 30, 1999Assignee: Canon Kabushiki KaishaInventors: Tetsuhiro Nitta, Yasutsugu Saijo
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Patent number: 5988784Abstract: Ink jet recording encounters deviations in the position at which a recorded dot is applied due to changes in the distance from the recording head to a recording medium, the carriage movement speed and the ink discharge speed or the like. When bidirectional recording is performed while moving the carriage having the recording head mounted thereon, deviations of the recorded dot may occur in the forward and rearward recording operations. The present invention is arranged in such a manner that values for correcting the deviations occurring in bidirectional recording and corresponding to the changes of the distance from the recording head to a recording medium, the carriage movement speed and the ink discharge speed or the like are previously stored. A drive signal, the timing of which has been corrected with the correction value, is used to operate the apparatus so that high-quality recordings free from deviations occurring in the bidirectional recording operation are obtained.Type: GrantFiled: November 10, 1993Date of Patent: November 23, 1999Assignee: Canon Kabushiki KaishaInventors: Makoto Takemura, Shinji Kanemitsu, Makoto Kashimura, Shinya Matsui, Toshiyuki Onishi, Tetsuhiro Nitta, Yasuhiro Unosawa, Hajime Yoshida, Masaru Satou, Hisashi Morioka, Hiroshi Yoshino
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Patent number: 5923350Abstract: An ink-jet recording apparatus includes a positioning device for postioning a recording head on a carriage and an electrical connecting device for establishing electrical connection between the recording head and a main body portion. The positioning device and the electrical connecting device are provided on the carriage independently of each other. Therefore, the recording head and an ink tank can be certainly and simply installed on the recording apparatus. Also, an information processing system employs such recording apparatus to output input information, such as characters, image or so forth on a recording medium.Type: GrantFiled: September 2, 1994Date of Patent: July 13, 1999Assignee: Canon Kabushiki KaishaInventors: Toshiyuki Ohnishi, Shinji Kanemitsu, Makoto Kashimura, Makoto Takemura, Tetsuhiro Nitta, Yasuhiro Unosawa, Satoshi Saikawa, Hiroshi Yoshino
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Patent number: 5913510Abstract: The present invention provides a horizontally set recording apparatus provided with a sheet inserting and discharging holes at the upper surface, wherein substantially linear recording sheet transporting route passing through the recording section is formed, and an automatic sheet feeding apparatus can be removably attached thereon. The recording sheet is delivered into an inlet opening of said transporting route.Type: GrantFiled: November 21, 1997Date of Patent: June 22, 1999Assignee: Canon Kabushiki KaishaInventors: Takehiko Kiyohara, Tetsuhiro Nitta, Makoto Kashimura, Hirofumi Hirano, Toshihiko Bekki, Tetsuo Kimura
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Patent number: 5813780Abstract: The present invention provides an automatic sheet feeding apparatus to be freely fixed and unfixed to the recording apparatus having sheet feeding cassette which stores the recording sheet is rotatably fitted in the posture from roughly perpendicular to inclined as against the sheet feed driving unit, and a space to insert the recording sheet is formed when the said sheet feeding cassette is in roughly perpendicular position and the recording sheet is separately fed to the recording apparatus when the said sheet feeding cassette is in inclined position.Type: GrantFiled: December 12, 1994Date of Patent: September 29, 1998Assignee: Canon Kabushiki KaishaInventors: Takehiko Kiyohara, Tetsuhiro Nitta
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Patent number: 5764246Abstract: A printing apparatus has a control unit for controlling the driving of a print head in accordance with a temperature measured by a sensor which is provided on a movable carriage for mounting the print head. The control unit controls a sensor such that the sensor measures the temperature when the carriage is in a position where the heat from motors or the like in the printing apparatus does not affect the sensor on the carriage.Type: GrantFiled: August 13, 1997Date of Patent: June 9, 1998Assignee: Canon Kabushiki KaishaInventors: Masafumi Wataya, Shinji Kanemitsu, Makoto Kashimura, Makoto Takemura, Shinya Matsui, Toshiyuki Onishi, Tetsuhiro Nitta, Yasuhiro Unosawa, Satoshi Saikawa, Masaru Satou, Hiroshi Yoshino
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Patent number: 5725319Abstract: The present invention provides a sheet feeding apparatus comprising a sheet supporting means for supporting a sheet, a rotatable sheet supply means for feeding out the sheet supported by the sheet supporting means and a skew-feed correction means for correcting a skew-feed of the sheet by rotating the sheet in a plane including a surface of the sheet while the sheet is being fed by the rotatable sheet supply means.Type: GrantFiled: July 2, 1997Date of Patent: March 10, 1998Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Saito, Tetsuo Suzuki, Makoto Kashimura, Masahiro Taniguro, Koichi Tanno, Haruyuki Yanagi, Tetsuhiro Nitta, Makoto Kawarama, Hiroyuki Kinoshita, Masaya Shinmachi, Tan At Ming, Kentaro Ohnuma, Seiji Ogasawara
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Patent number: 5588757Abstract: A recording apparatus for performing recording uses a carriage mounted with a recording head moving along a guide shaft. The recording apparatus includes a magnetic linear encoder consisting of a scale element magnetized and a detection unit for detecting magnetized information magnetized to the scale element. Provided also are clicks formed on any one of the detection unit and the carriage and click engaging portions formed in the other one of the detection unit and the carriage. The clicks engage with the click engaging portions, whereby the detection unit is snap-locked to the carriage. This enables the detection unit of the magnetic linear encoder to be readily attached to the carriage and besides, when attached, prevents disorder of the information magnetized to the scale element. Further, even when a position of the carriage shifts corresponding to sheets having different thicknesses, a sliding load of the carriage does not change.Type: GrantFiled: March 20, 1996Date of Patent: December 31, 1996Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Unosawa, Shinji Kanemitsu, Makoto Kashimura, Makoto Takemura, Shoji Kikuchi, Shinya Matsui, Toshiyuki Onishi, Tetsuhiro Nitta, Masaru Sato, Hisashi Morioka
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Patent number: 5540427Abstract: The present invention provides a sheet convey apparatus having a convey roller contacting with a sheet while rotating to apply a convey force to the sheet, a pinch roller for cooperating with the convey roller to convey the sheet, a support for supporting a center of the pinch roller in its widthwise direction, and a biasing device for biasing the support in such a manner that the support means urges the pinch roller against the convey roller in the widthwise direction of the pinch roller.Type: GrantFiled: February 16, 1995Date of Patent: July 30, 1996Assignee: Canon Kabushiki KaishaInventors: Tetsuhiro Nitta, Shinji Kanemitsu, Makoto Kashimura, Makoto Takemura, Shinya Matsui, Toshiyuki Onishi, Yasuhimo Unosawa, Masaru Sato, Hisashi Morioka, Hiroshi Yoshino
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Patent number: 5534894Abstract: An ink jet recording apparatus wherein ink is ejected on a recording medium to effect recording includes a platen for regulating a recording surface of the recording medium; a confining member contactable to the platen to confine the recording medium; and an elastic member, disposed at a bottom of the apparatus, for urging the confining member to the platen.Type: GrantFiled: January 23, 1995Date of Patent: July 9, 1996Assignee: Canon Kabushiki KaishaInventors: Hirofumi Hirano, Toshihiko Bekki, Makoto Kashimura, Takehiko Kiyohara, Tetsuhiro Nitta, Tetsuo Kimura
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Patent number: 5480132Abstract: A sheet transport apparatus has a transport mechanism for transporting a sheet-like member in a predetermined direction and in a direction reverse to the predetermined direction, an auxiliary transport roller capable of contacting with the sheet transported by the transport mechanism, a motor, and a drive transmission mechanism arranged to transmit a driving force for rotating the auxiliary transport roller in a direction such as to transport the sheet in the predetermined direction from the motor to the roller when the transport mechanism transports the sheet in the predetermined direction, and to disengage the connection to the motor to enable the auxiliary transport roller to rotate by following the sheet.Type: GrantFiled: May 1, 1995Date of Patent: January 2, 1996Assignee: Canon Kabushiki KaishaInventors: Takehiko Kiyohara, Tetsuhiro Nitta