Patents by Inventor Naohiro Iwata

Naohiro Iwata 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: 7088475
    Abstract: There is disclosed an image reading device, comprises a stacking section for stacking a document, a reading section for reading an image of the document, a separating section for separating the document stacked on the stacking section sheet by sheet, a conveying section for conveying the document separated by the separating section to the reading section and a discharging section for discharging the document to the outside of the device. In the device, sheet separating performance is enhanced. Additionally, the device body is reduced in cost and size, excellent reading operation can constantly be realized, and device assembling property is enhanced.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: August 8, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideyuki Terashima, Keizo Sasai, Naohiro Iwata, Kazuyuki Morinaga, Katsumi Obana, Yoshiaki Suzuki
  • Patent number: 6801344
    Abstract: There is disclosed an image reading device, comprises a reading section detachably attached to a device body for reading an image of document by manual scanning when detached from the device body, a recording section for recording the image on a sheet, a document conveying path for conveying the document to the reading section and a sheet conveying path for conveying the sheet to the recording section. The conveying directions of the document and the sheet are set to be the same, and the sheet conveying path is disposed below the document conveying path. Similar paper handling can be performed on the document and the sheet, defects such as the mistaking of the discharge port of the document for that of the sheet and the difficulty in handling the document and sheet are eliminated, and the operating property of the device is enhanced. Additionally, the reading section can easily be detached from the device body.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: October 5, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuyuki Morinaga, Keizo Sasai, Naohiro Iwata, Katsumi Obana, Hideyuki Terashima, Yoshiaki Suzuki
  • Publication number: 20030202218
    Abstract: There is disclosed an image reading device, comprises a reading section detachably attached to a device body for reading an image of document by manual scanning when detached from the device body, a recording section for recording the image on a sheet, a document conveying path for conveying the document to the reading section and a sheet conveying path for conveying the sheet to the recording section. The conveying directions of the document and the sheet are set to be the same, and the sheet conveying path is disposed below the document conveying path. Similar paper handling can be performed on the document and the sheet, defects such as the mistaking of the discharge port of the document for that of the sheet and the difficulty in handling the document and sheet are eliminated, and the operating property of the device is enhanced. Additionally, the reading section can easily be detached from the device body.
    Type: Application
    Filed: October 1, 1999
    Publication date: October 30, 2003
    Inventors: KAZUYUKI MORINAGA, KEIZO SASAI, NAOHIRO IWATA, KATSUMI OBANA, HIDEYUKI TERASHIMA, YOSHIAKI SUZUKI
  • Patent number: 6113207
    Abstract: An image processor includes a first image information processing unit which processes image information with respect to a sheet medium. A first sheet medium feeding path guides the sheet medium to the first image information processing unit, and exhausts the sheet medium from the first image information processing unit. A second image information processing unit processes image information with respect to a sheet medium while allowing a head for processing image information to travel serially. The second information processing unit is arranged on a side lower than the first image information processing unit. A second sheet medium feeding path guides the sheet medium to the second image information processing unit, and exhausts the sheet medium from the second image information processing unit. An electric circuit board is arranged below the feeding path of the first sheet medium, and above the feeding path of the second sheet medium.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: September 5, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuji Nakano, Minoru Yokoyama, Naohiro Iwata, Hideyuki Terashima
  • Patent number: 6086178
    Abstract: A printer that performs high-precision residual-ink detection regardless of various movements accompanying print operation and facsimile apparatus using the printer. When an ink cartridge reciprocates along a main-scanning direction, ink surface of ink 91 varies depending on a moving direction and moving condition (stationary state, uniform motion, accelerated motion and decelerated motion) of the ink cartridge. Accordingly, the residual-ink detection is controlled such that a residual-ink amount can be detected by using photosensor 11 and reflection board 93, at the same detection timing (e.g., always at timing of uniform motion).
    Type: Grant
    Filed: June 17, 1996
    Date of Patent: July 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shunji Kawashima, Minoru Yokoyama, Yuji Nakano, Naohiro Iwata, Hideyuki Terashima
  • Patent number: 6040919
    Abstract: A reading recording apparatus such as a facsimile apparatus is provided with a reading portion which causes an original conveying path to convey an original and reading image information, and a recording portion which causes a recording sheet conveying path to convey a recording sheet and effecting recording thereon, wherin an operating portion is disposed on the upper surface of an apparatus body, a lid member is provided openably and closably relative to the apparatus body, with the lid member, when in its closed position, covering the operating portion, and when in its opened position, supporting the original and the recording sheet so as to be guided by the original conveying path and the recording sheet conveying path, whereby the reading-recording apparatus has a well-balanced and compact structure.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: March 21, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naohiro Iwata, Katsumi Obana, Hideyuki Terashima, Noriyuki Aoki
  • Patent number: 6012794
    Abstract: A printing apparatus which can detect remaining ink with high precision regardless of trembles of ink surface in an ink tank caused by various factors such as scanning speed of a carriage, scanning width, impact of the carriage at the time of reversing the carriage scanning direction and the like, and can perform printing by efficiently utilizing the remaining ink, and a facsimile apparatus using the above printing apparatus. According to the apparatus, when a CPU controls print operation, the CPU dynamically changes the threshold value as a determination reference, utilized to detect remaining ink on the basis of an output current of a reflection type photosensor, in accordance with the scanning speed of carriage movement, the scanning width, and the stop period for reversing the scanning direction.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: January 11, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuji Nakano, Minoru Yokoyama, Naohiro Iwata, Shunji Kawashima, Hideyuki Terashima
  • Patent number: 5903365
    Abstract: A sheet conveying apparatus and an original reading apparatus according to the present invention can reduce a load of a drive system for rotating a convey rotary member and can be made compact. The apparatus includes an original convey roller rotatably supported by a frame, and a contact sensor holder rockably held by a contact sensor rotation shaft regulated in a thickness-wise direction of an original by a contact sensor holder rotation shaft holding portion of the frame and adapted to hold a second contact sensor in a confronting relation to the original convey roller. The second contact sensor is urged against the original convey roller by an urging spring.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: May 11, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naohiro Iwata, Minoru Yokoyama, Yuji Nakano, Shunji Kawashima, Hideyuki Terashima
  • Patent number: 5749570
    Abstract: The present invention provides a sheet conveying apparatus comprising a first rotary member for conveying a sheet, and a second rotary member disposed at a downstream side of the first rotary member in a sheet conveying direction and adapted to convey the sheet. It further comprises a first mode in which the first rotary member is rotated and the second rotary member is stopped, and a second mode in which the first and second rotary members are rotated. In a condition that the first rotary member is continuously rotated in one direction, the first mode is changed to the second mode.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: May 12, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naohiro Iwata, Minoru Yokoyama, Yuji Nakano, Shunji Kawashima, Hideyuki Terashima
  • Patent number: 5579129
    Abstract: The present invention provides an original reading apparatus including a pre-scan mode for reading a color reference member before an original is read, a registration mode for aligning a tip end of the original before the original is read, and a reading mode for conveying and reading the original. The reading apparatus further comprises first and second rotary member to perform the above three modes, and these modes are effected by selectively rotating the first and second rotary members in a normal direction and/or reverse direction and selectively stopping the first or second rotary member.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: November 26, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naohiro Iwata, Minoru Yokoyama, Yuji Nakano, Hideyuki Terashima