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公开(公告)号：DE69718561D1
公开(公告)日：2003-02-27
申请号：DE69718561
申请日：1997-07-09
Applicant: CANON KK
Inventor： NISHIMURA AKIMASA
Abstract: A developing device includes a developing sleeve for bearing and conveying a magnetic developer, a magnet provided within the developing sleeve, and magnetic members, provided so as to face end portions of the developing sleeve with a gap, for forming a magnetic seal by a magnetic field formed between the magnetic members and the magnet. The magnet or each of the magnetic members has a plurality of grooves for forming a leakage magnetic field.
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公开(公告)号：FR2751101B1
公开(公告)日：2002-01-18
申请号：FR9708714
申请日：1997-07-09
Applicant: CANON KK
Inventor： NISHIMURA AKIMASA
Abstract: A developing device includes a developing sleeve for bearing and conveying a magnetic developer, a magnet provided within the developing sleeve, and magnetic members, provided so as to face end portions of the developing sleeve with a gap, for forming a magnetic seal by a magnetic field formed between the magnetic members and the magnet. The magnet or each of the magnetic members has a plurality of grooves for forming a leakage magnetic field.
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公开(公告)号：DE3028118A1
公开(公告)日：1981-02-12
申请号：DE3028118
申请日：1980-07-24
Applicant: CANON KK
Inventor： TOYAMA MASAMICHI , HIRATA NORITSUGU , IWAMA HIDETO , OKAJIMA HIDEKAZU , NISHIMURA AKIMASA
Abstract: The present invention relates to a camera having an automatic focus adjusting device, being characterized in that the motor for the focus adjustment is not provided particularly, whereby the motor for the shutter operation and the film feeding is changed over by means of a clutch so as to be used for the focus adjustment.
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公开(公告)号：DE69718561T2
公开(公告)日：2003-06-26
申请号：DE69718561
申请日：1997-07-09
Applicant: CANON KK
Inventor： NISHIMURA AKIMASA
Abstract: A developing device includes a developing sleeve for bearing and conveying a magnetic developer, a magnet provided within the developing sleeve, and magnetic members, provided so as to face end portions of the developing sleeve with a gap, for forming a magnetic seal by a magnetic field formed between the magnetic members and the magnet. The magnet or each of the magnetic members has a plurality of grooves for forming a leakage magnetic field.
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公开(公告)号：ITRM970411A1
公开(公告)日：1999-01-09
申请号：ITRM970411
申请日：1997-07-09
Applicant: CANON KK
Inventor： NISHIMURA AKIMASA
Abstract: A developing device includes a developing sleeve for bearing and conveying a magnetic developer, a magnet provided within the developing sleeve, and magnetic members, provided so as to face end portions of the developing sleeve with a gap, for forming a magnetic seal by a magnetic field formed between the magnetic members and the magnet. The magnet or each of the magnetic members has a plurality of grooves for forming a leakage magnetic field.
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Patent Agency Ranking
公开(公告)号：DE3306705A1
公开(公告)日：1983-09-08
申请号：DE3306705
申请日：1983-02-25
Applicant: CANON KK
Inventor： TAKAYAMA MAKOTO , MURAMOTO TOMOTAKA , NISHIMURA AKIMASA
IPC: G03B7/16 , G03B7/17 , G03B7/18 , G03B15/03 , H04N9/04 , H04N9/73 , G03B15/05 , H04N1/028 , H04N5/26 , H04N1/46
Abstract: Disclosed is a camera which is provided with change-over means for changing the photographing mode between a tungsten-light mode and a day-light mode and means for fixing the photographing mode to the day-light mode in response to completion of preparation of the flash light emission of a flash device when the flash device is used.
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公开(公告)号：IT1293082B1
公开(公告)日：1999-02-11
申请号：ITRM970411
申请日：1997-07-09
Applicant: CANON KK
Inventor： NISHIMURA AKIMASA
Abstract: A developing device includes a developing sleeve for bearing and conveying a magnetic developer, a magnet provided within the developing sleeve, and magnetic members, provided so as to face end portions of the developing sleeve with a gap, for forming a magnetic seal by a magnetic field formed between the magnetic members and the magnet. The magnet or each of the magnetic members has a plurality of grooves for forming a leakage magnetic field.
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公开(公告)号：FR2751101A1
公开(公告)日：1998-01-16
申请号：FR9708714
申请日：1997-07-09
Applicant: CANON KK
Inventor： NISHIMURA AKIMASA
Abstract: A developing device includes a developing sleeve for bearing and conveying a magnetic developer, a magnet provided within the developing sleeve, and magnetic members, provided so as to face end portions of the developing sleeve with a gap, for forming a magnetic seal by a magnetic field formed between the magnetic members and the magnet. The magnet or each of the magnetic members has a plurality of grooves for forming a leakage magnetic field.
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公开(公告)号：DE3039155A1
公开(公告)日：1981-05-07
申请号：DE3039155
申请日：1980-10-16
Applicant: CANON KK
Inventor： HIRATA NORITSUGU , TOYAMA MASAMICHI , IWAMA HIDETO , OKAJIMA HIDEKAZU , NISHIMURA AKIMASA
Abstract: A motion picture camera provided with an automatic focusing device is arranged to have an image of light emitted from an infrared ray emitting diode projected toward an object to be photographed, and to detect an in-focus state by detecting a peak value of output voltage from a light sensitive element as the direction of the emitted light is varied by a rotatable distance measuring cam. The automatic focusing device is adapted for a zoom lens assembly and is arranged to drive an imaging lens, supported by a shaft which is guided by plate shaped masks at both ends of the lens assembly, in the direction of the lens optical axis. The force for driving the imaging lens is kept low, so that the imaging lens can be accurately adjusted by a rotatable focusing cam during a focusing operation. The rotational position of the distance measuring cam, and that of the focusing cam, are provided in the form of resistance values which vary according to the cam lifts, or in the form of digital codes. When digital codes are employed, distance intervals are established so that the depth of field at each interval overlaps an adjacent interval. Satisfactory focusing thus is provided for all distances within any measured interval.
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公开(公告)号：DE3020302A1
公开(公告)日：1980-12-11
申请号：DE3020302
申请日：1980-05-28
Applicant: CANON KK
Inventor： HIRATA NORITSUGU , TOYAMA MASAMICHI , OKAJIMA HIDEKAZU , NISHIMURA AKIMASA
Abstract: A camera having a distance measuring optical system and a photograph taking optical system is provided with an optical member carrying body formed by unifying a carrying member carrying at least a part of the photograph taking optical system and a carrying member carrying the distance measuring optical system. The optical member carrying body is molded with a synthetic resin and an internal reinforcement member such as a metal plate.
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