Patents by Inventor Mutsunobu Yazaki
Mutsunobu Yazaki 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: 4609163Abstract: A device for loading film wherein the narrow leader of the film is wound up on a takeup spool having a frictional member provided in a portion of the outer periphery thereof, while its edge opposite to that which has perforations is pressed against the frictional member, whereby the film leader is impelled towards the flank of the spool as the inside edge of the film leader on the aforesaid frictional member moves faster than the opposite edge. After one turn of the film leader around the spool, the outer corner of the end of the film leader is conducted so as not to engage perforations of the following area of the film.Type: GrantFiled: October 9, 1985Date of Patent: September 2, 1986Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Kimura, Mutsunobu Yazaki, Tateo Yamada
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Patent number: 4494842Abstract: When a detector detects that a motorized transport arrangement is winding film, or when a resetting arrangement detects that a full frame has been wound, a reset signal resets a timer. When the detector arrangement senses that the transport is not moving the film and the film has not been wound a full frame, a release signal actuates the timer which generates a switching signal. A switchover facility responds to the switching signal to cause the transport to stop winding and start rewinding.Type: GrantFiled: November 12, 1982Date of Patent: January 22, 1985Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Kimura, Mutsunobu Yazaki, Hideo Taka, Makoto Masunaga
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Patent number: 4284337Abstract: A photographic apparatus of the foldable type in which, when in preparation for photography, a front housing carrying a photographic objective lens system together with a focusing mechanism therefor is moved away from a rear housing to form an exposure chamber for a sensitive material loaded in the rear housing. When the apparatus is rearranged to a folded position, the front housing is brought into compact relation with the rear housing. Since a distance-measurng device is located in the rear housing, there is provided an electrical channel for establishing electrically operative connection between the focusing mechanism and the distance measuring device as arranged along a path between the front and rear housing which remains substantially unchanged in length during the erecting and collapsing operation of the apparatus.Type: GrantFiled: March 23, 1979Date of Patent: August 18, 1981Assignee: Canon Kabushiki KaishaInventors: Fumio Ito, Mutsunobu Yazaki
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Patent number: 4273432Abstract: In a camera having an electric motor and a flash device incorporated within the housing thereof, in order that simultaneous electrical power supply to the motor and the flash device from one and the same battery never occurs, there are provided a switch cooperative with a shutter button upon depression to inhibit electrical power supply to the flash device, and another switch arranged to be closed when each cycle of film winding operation is completed, thereby the motor is disconnected from the battery and the flash device is connected thereto.Type: GrantFiled: August 31, 1979Date of Patent: June 16, 1981Assignee: Canon Kabushiki KaishaInventors: Mutsuhide Matsuda, Hideo Tamamura, Tetsuya Taguchi, Tadashi Okino, Mutsunobu Yazaki
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Patent number: 4208114Abstract: An instant picture camera which uses a cassette housing photosensitive sheet material, has a storage area for storing developer agent and forms a visible image after the developing process by the agent in the storage area after exposure is disclosed. The camera includes a rear housing having a cassette housing chamber into which the cassette is loaded. A front housing has a device which can selectively expose the photosensitive material in the rear housing and is also included. A mechanism for advancing photosensitive material forms part of the camera which advances the material after exposure. An upper cover of the camera opens and closes an opening of the cassette housing chamber. The cover includes an opening which permits the discharging of the photosensitive sheet material being processed and advanced by the advancing mechanism to the outside. A folding device for bringing the rear housing and front housing either close to each other or far apart from each other is included in the camera arrangement.Type: GrantFiled: June 28, 1978Date of Patent: June 17, 1980Assignee: Canon Kabushiki KaishaInventors: Fumio Ito, Mutsunobu Yazaki
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Patent number: 4201463Abstract: The present invention relates to a photographic camera device in which current is supplied to the winding up motor device for automatically advancing the film and cocking the shutter and to a rechargeable electronic flash light device from a single common power source battery. The camera is provided with a voltage detecting device for detecting the voltage of the power source battery, and a control device for simultaneously supplying current to the winding up motor device and the flash light device when the power source voltage detected by the voltage detecting device is higher than a certain determined voltage, and for preventing current flow to the flash light device while the current is being supplied to the winding up motor device when the detected power source voltage is lower than the determined voltage.Type: GrantFiled: May 15, 1978Date of Patent: May 6, 1980Assignee: Canon Kabushiki KaishaInventors: Isao Harigaya, Tetsuya Taguchi, Fumio Ito, Mutsunobu Yazaki
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Patent number: 4184759Abstract: A photographic apparatus of the foldable type in which, when in preparation for photography, a front housing carrying a photographic objective lens system together with a focusing mechanism therefor is moved away from a rear housing to form an exposure chamber for a sensitive material loaded in the rear housing. When the apparatus is rearranged to a folded position, the front housing is brought into compact relation with the rear housing. Since a distance-measuring device is located in the rear housing, there is provided an electrical channel for establishing electrically operative connection between the focusing mechanism and the distance measuring device as arranged along a path between the front and rear housing which remains substantially unchanged in length during the erecting and collapsing operation of the apparatus.Type: GrantFiled: July 27, 1977Date of Patent: January 22, 1980Assignee: Canon Kabushiki KaishaInventors: Fumio Ito, Mutsunobu Yazaki
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Patent number: 4166683Abstract: The present invention relates to a foldable photographic apparatus having a photographic optical system and a view finder optical system, being separately provided from each other which is characterized in that the finder optical system is divided into a first finder optical system group provided in a housing section in which at least a portion of a photographic lens system of said photographic optical system is provided and a second finder optical system group retained in another housing section, wherein these first and second finder optical system groups can move against each other.Type: GrantFiled: July 29, 1977Date of Patent: September 4, 1979Assignee: Canon Kabushiki KaishaInventors: Fumio Ito, Mutsunobu Yazaki
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Patent number: 4154518Abstract: A photographic camera of the type having at least one reflection mirror positioned in a space between an objective lens optical system and a film plane so that an image bearing beam of light rays entering through the objective lens optical system after reflection from the mirror is deflected to the film plane, includes a dustproof shutter device for sealing the space containing the mirror from a film casette chamber when a film casette is loaded in the chamber therefor, in order to prevent dust and other falling particles from entering a photo-taking optical system chamber containing the mirror through an opening for the loading and removal of the film cassette.Type: GrantFiled: July 21, 1977Date of Patent: May 15, 1979Assignee: Canon Kabushiki KaishaInventors: Fumio Ito, Mutsunobu Yazaki
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Patent number: 4126872Abstract: In the disclosed arrangement, an energy storage device such as a capacitor is discharged through a flash lamp. A sensing device produces a signal when the storage voltage is sufficient to fire the lamp. A switchover device normally permits the shutter and exposure aperture to be set for daylight operation, but automatically responds to the signal to switch the shutter speed and the exposure aperture to suitable values for flash operation.Type: GrantFiled: November 8, 1976Date of Patent: November 21, 1978Assignee: Canon Kabushiki KaishaInventors: Mutsunobu Yazaki, Takashi Uchiyama, Mutsuhide Matsuda, Tetsuya Taguchi, Yukio Mashimo
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Patent number: 4122472Abstract: A photographic camera having a rear housing into which a cassette housing photosensitive material is loaded, a front housing having a device which can selectively expose the photosensitive material housed in the rear housing, and a bellows connecting the rear housing and the front housing in a freely expandable and shrinkable manner, in which the position of the cassette can be selectively shifted to a position which is desirable for the exposure device within the housing to have said photo-sensitive material exposed when said bellows is expanded. The position can be shifted to a position where it does not hinder the front housing from being housed within the rear housing when the bellows is collapsed.Type: GrantFiled: July 5, 1977Date of Patent: October 24, 1978Assignee: Canon Kabushiki KaishaInventors: Fumio Ito, Mutsunobu Yazaki
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Patent number: 4086582Abstract: An exposure control device in which the output of a light measuring circuit which produces an electrical signal corresponding to the brightness of an object is compared with an output of a level signal circuit which produces an electrical signal of a predetermined level. When the compared value reaches a predetermined value, a flash circuit is made ready to flash, whereby the shutter time is changed over to a predetermined time suited for a flash photography and the flash circuit is made to flash in association with the shutter operation and the shutter is controlled with a constant time.Type: GrantFiled: August 5, 1976Date of Patent: April 25, 1978Assignee: Canon Kabushiki KaishaInventors: Takehiko Kiyohara, Tokuichi Tsunekawa, Mutsunobu Yazaki, Noriaki Sanada, Tetsuya Taguchi, Zenzo Nakamura
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Patent number: 4030108Abstract: The present invention relates to an aperture setting device for camera at the time of photographing under day light as well as under flashlight. The device presents an aperture setting ring rotatable from the range of photographing under daylight to that under flashlight, being switched over according to the then photographing conditions, an information setting means to be moved according to the set information for photographing under flashlight such as information of the distance and an aperture ring for setting aperture, whereby the aperture ring is moved in engagement with the aperture setting ring in case the aperture setting ring is set for the range of photographing under daylight while the aperture ring is moved in engagement with the information setting means in case the aperture setting ring is set for the range of photographing under flashlight. In this way the aperture is set for photographing under daylight as well as under flashlight.Type: GrantFiled: May 12, 1975Date of Patent: June 14, 1977Assignee: Canon Kabushiki KaishaInventors: Mutsunobu Yazaki, Takashi Uchiyama, Mutsuhide Matsuda, Tetsuya Taguchi, Yukio Mashimo
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Patent number: 4025931Abstract: A device for printing an image of an indicium manually selected from a series of indicia representing different exposure values in or near the corresponding exposed frame of the film associated with a camera. Responsive to an actuation of the camera shutter release member, a pulse-forming circuit produces a pulse signal in a predetermined potential form which drives a switching circuit until the time dependant potential of the pulse signal reaches a threshold level for actuating an electronic switch controlling the period of actuation of a lamp by which said selected indicium is illuminated, whereby the time of exposure of the film to the indicium printing light is maintained constant irrespective of variation of the period of actuation of the camera shutter release member.Type: GrantFiled: March 20, 1975Date of Patent: May 24, 1977Assignee: Canon Kabushiki KaishaInventors: Tetsuya Taguchi, Mutsunobu Yazaki, Noriaki Sanada
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Patent number: 4024550Abstract: A flash synchronizing device for use in a photographic camera having a two-blade type shutter comprises first and second switches series-circuited to each other and to a battery circuit for a flash tube and associated with the shutter so that the first switch is closed when the opening blade of the shutter is in a terminal position of running-down movement thereof, and the second switch is opened when the closing blade starts to running-down movement.Type: GrantFiled: September 18, 1975Date of Patent: May 17, 1977Assignee: Canon Kabushiki KaishaInventors: Mutsunobu Yazaki, Noriaki Sanada, Tetsuya Taguchi
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Patent number: 4015277Abstract: A shutter device for a camera in which the film has frame perforations, is designed so that the operation means is functionally engaged with the film winding up mechanism in such a manner that the operation lever of the operation means moves as one body with the operation means during the shutter charging operation and is kept in a position which is out of engagement with the shutter charge means by a fixed stopping member during the film winding up operation following the shutter charging after the termination of the shutter charging.Type: GrantFiled: June 23, 1975Date of Patent: March 29, 1977Assignee: Canon Kabushiki KaishaInventors: Mutsunobu Yazaki, Noriaki Sanada, Tetsuya Taguchi
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Patent number: 3949412Abstract: A camera is provided, in which the light sensitive element for the electronic exposure meter can be commonly used as the light sensitive element for the exposure control circuit.Type: GrantFiled: December 4, 1974Date of Patent: April 6, 1976Assignee: Canon Kabushiki KaishaInventors: Tetsuya Taguchi, Mutsunobu Yazaki, Noriaki Sanada