Canon Kabushiki Kaisha

Kiyoshi Takahashi

Akira Ashida

Hiroyuki Takimoto

Yoshio Komine

Kuniyoshi Suzaki

Takashi Itani

Masaya Maeda

Toshikazu Ichiyanagi

Tateo Yamada

Kazuya Hosoe

Mamoru Shimazaki

Mitsutoshi Ogiso

Hiroshi Furukawa

Noritsugu Hirata

Takashi Amikura

Tomoshi Takigawa

Yutaka Kohtani

Soichi Nakamoto

Kazuo Ishikawa

Yoshihiro Shigeta

Syohei Ohtaki

Tomoaki Kawamura

Takashi Yamada

In the disclosed motion picture projector the original sound recorded on the main magnetic stripe along one edge of a film stripe also having a magnetic balance stripe along the other edge of the same film surface, is reproduced by a recording-reproducing head. A second recording-reproducing head records the signal on the balance stripe. While the original sound signal is being heard, the first recording-reproducing head overlaps a second sound signal on the main stripe. A part of the original sound signal on the main stripe may be erased and a new signal recorded in its place.

Sound motion picture projector

A motion picture camera is adapted to receive a film magazine containing a roll of sound recordable photographic film. A housing forms a chamber to receive the magazine. A cover opens and closes the chamber. A recording system records sound signals on the film. A setting arrangement engages the recorder system and the film with each other so as to record signals. The setting arrangement is movable into a first position where the film engages the recorder and a second position where the film is disengaged from the recorder so as to be incapable of recording sound signals. A transport device is coupled to the setting arrangement in the first position when the recorder is in the first position. An interconnecting system responds to closure of the cover for moving the setting arrangement from the second position to the first position so that the camera can be set for sound signal recording in response to the closing of the cover.

Cinecamera equipment capable of synchronous sound recording

Disclosed is a sound motion picture projection apparatus in which a head pad is urged by a spring member toward a film pressing position at which position the head pad presses a film against a magnetic head disposed along the sound recording and reproducing film path. The apparatus has a set mechanism of the self-holding type which sets the head pad against the urging force of the spring member to a film pressure releasing position at which position the head pad releases the pressing of the film, by the driving force of a driving motor and keeps the head pad to that position. The apparatus further has a film detecting member which is disposed in said sound film path after the magnetic head and operatively connected with the set mechanism in such a manner that the holding of the head pad at the film pressure releasing position by means of the set mechanism is released when the film detecting member detects the film introduced into the sound film path and thereafter the setting operation of the set mechanism is made ineffective as long as the film detecting member detects that a film exists in the sound film path. Thereby when the set mechanism is driven by the driving motor when no film exists at least in the sound film path, the head pad is automatically set to the film pressure releasing position and then the head pad is automatically changed from the film pressure releasing position to the film pressing position when the film detecting member detects the introduction of the film into the sound film path.

Sound motion picture projection apparatus

The present invention relates to a lens unit construction for motion picture and other type projectors. The unit is provided with a motion picture projecting lens construction, a mantle cover to be fixed on the fixing position of the motion picture projector body, a guide device for slidingly guiding and holding the lens construction holding device on the device plate in such a manner that the construction holding device is slidable only along the direction of the optical axis of the lens construction and an adjusting device for operating the slide motion of the construction holding device. The construction holding device or the adjusting device is provided with a cam follower pin while the other is provided with a focus adjusting cam groove in which the cam follower pin is engaged. An engaging device guides the cam follower pin so that it can be easily introduced into the cam groove at the time of assembling the construction holding device with the adjusting device to form one body and for preventing the cam follower pin from being easily brought out of the cam groove in such a manner that the construction holding device is cooperatively coupled with the adjusting device.

Lens unit for motion picture projector and others

A sound motion picture projection apparatus provided with pressure pad means operable to press a film against magnetic sound recording and reproducing head means disposed along a path of the film for sound recording and/or reproduction. Urging means urge the pressure pad means toward its film pressing position. Externally operable means are provided for shifting the pressure pad means from its film pressing position to a released position against the urging force of the urging means. Releasable locking means are provided for holding the pressure pad means in the released position against the urging force of the urging means; and film detecting means are disposed in said sound film path behind the magnetic head means to detect introduction of the film into the sound film path and to release the locking of the pressure pad means by the locking means. Thereby, when film introduction into the film path for sound recording and/or reproduction is detected by the film detecting means, the pressure pad means is automatically changed from the released position to the film pressing position.

A sound motion picture camera, capable of using a film strip having a main stripe of magnetic recording material along one side edge of one surface and a balance stripe of magnetic recording material along the other edge of the same surface as well as its motion picture. The camera has a recording magnetic head arranged in correspondence with the main stripe and a second recording magnetic head arranged in correspondence with the balance stripe. Thus the same sound signal can be recorded on both the main and the balance stripe through first and second recording magnetic heads. Separate from the camera a sound recording/reproducing device for cooperation with the aforementioned film is provided with a sound recording/reproducing head and an erase magnetic head in a position corresponding to the main stripe and a sound reproducing head in a position corresponding to the balance stripe. A sound signal recorded on the balance stripe is reproduced by the sound reproducing head and heard through a speaker. Another sound signal from a microphone is recorded on the main stripe of the film at a desired position, through the sound recording/reproducing head.

Sound motion picture camera and sound motion picture system

The present invention relates to a cine-projector so designed as to carry out the motion picture projection, the still picture projection, the quick film feeding as well as winding up by simultaneously controling the first clutch mechanism for selectively interrupting the engagement of the driving ower transmission mechanism with the feeding shaft rotated by means of the driving power of a motor rotating along a single direction through the driving power transmission mechanism by means of the translation mechanism to be translated at least into three positions in functional engagement with the operation mode change over mechanism for changing over the operation mode of the cine-projector, the second clutch mechanism for selectively interrupting the engagement of the driving power transmission mechanism with the winding up shaft rotated along the inversed direction as that of the above mentioned feeding shaft by means of the driving power of the above mentioned motor through the driving power transmission mechanism, the first control mechanism for controling the efficiency of the mechanism for intermittently feeding the film at the projection part and the second control mechanism for controling the binding mechanism for semi-compulsorily binding the film at the projecton part.

Cine-projector

A motion picture projector having various functions such as, projecting and rewinding, all of which can be selectively performed by a single control knob, and including an intermittent-drive film advancing mechanism which comprises a pull-down structure, a compound cam of an up-and-down cam wheel and an in-and-out cam disk, and first and second cam followers arranged between the pull-down structure and the compound cam to be consecutively operated so that the pull-down claw enters the perforations of the film and moves it in a forward direction always by the length of a frame and at a desired frequency through a film gate mechanism. The film gate mechanism consists of a film guideway, a resilient thin aperture plate self-biased to move away from the film guideway and defining an actual projection aperture, and a movable film gate member arranged on the opposite side of the aperture plate from the guideway and biased to urge the aperture plate for guidance and support of the film against the guideway. The pull-down structure and the film gate member have respective input means arranged to be consecutively actuable by a common mode changeover means cooperative with the control knob. The mode changeover means has at least three switched positions, that is, a first position for a normal projecting operation, a second position where the pull-down structure is maintained disengaged from the in-and-out cam follower to project a still picture, and a third position where the film gate member and the aperture plate are spaced from the film guideway to permit continuous transportation of the film at a far faster speed than that occurring in the normal projecting mode of operation.

Motion picture projector

A system for controlling development conditions under which an exposed film strip is processed with a compact multi-purpose film handling cartridge. The film cartridge which is adapted to be mounted in a motion picture camera and projector employing the system of the invention and including motor drive means contains a strip of film, a processing station, film advance means engaging said drive means when the cartridge is mounted in said camera or projector, and an applicator containing development chemicals positioned in said processing station to be brought into operable relationship with the film strip when said processing station is rendered operable, thereby they are expressed onto the film strip from the applicator while said film strip is being advanced. In order to optimize the processing of the exposed film strip regardless of deviation of the temperature of the development chemicals from a desired predetermined level, the system includes means located in close proximity to the applicator for detecting the ambient temperature thereof, a first motor control means cooperating with said temperature detecting means to control the speed of said motor in accordance with the detected temperature, and a second motor control means for maintaining a constant rate of travel of the film strip advanced by said film advance means across the processing station, said first and second motor control means being associated with each other for processing the exposed film strip in optimization as well as in uniformity along the length of the film strip.

Processing condition control system for a multi-purpose film handling

A motion picture camera is adapted to receive a film magazine containing a roll of sound recordable photographic film. A housing forms a chamber to receive the magazine. A cover opens and closes the chamber. A recording system records sound signals on the film. A setting arrangement engages the recorder system and the film with each other so as to record signals. The setting arrangement is movable into a first position where the film engages the recorder and a second position where the film is disengaged from the recorder so as to be incapable of recording sound signals. A transport device is coupled to the setting arrangement in the first position when the recorder is in the first position. And an interconnecting system responds to closure of the cover for moving the setting arrangement from the second position to the first position so that the camera can be set for sound signal recording in response to the closing of the cover.

The present invention relates to a synchronization system of a cine-projector with a sound tape reproducer. It is characterized in that the phase of a signal corresponding to the film feeding speed of the film projector and that of a signal corresponding to the standard speed coming from the sound tape reproducer are compared with each other so as to control the film feeding speed of the cine-projector by means of the comparison output corresponding to the phase difference. In order to accomplish this, between the driving source for driving the internal mechanism of the cine-projector and the driving member for the internal mechanism, a transmission speed varying mechanism is provided in such a manner that the transmission speed varying mechanism is controlled by means of the film speed control driving source to be driven by the comparison output so as to maintain the synchronized state.

Synchronization system of the cine-projector with the sound tape

The present invention relates to a camera allowing simultaneous sound recording into which a film magazine housing a photographing film which can record sound information thus allowing simultaneous sound recording and an ordinary photographing film magazine can be selectively loaded. Also provided is a detection device to distinguish the kind of film magazines mentioned above and a linking mechanism which shifts the camera into a sound recording state in correspondence with the closing action of the magazine chamber cover of a camera only when the above mentioned detection device detects the film magazine which allows simultaneous sound recording.

Camera allowing simultaneous sound recording

This specification discloses a motion picture projector device as audio-visual aid and an audio-visual system using the same. The device uses a film structure including an image information recording zone, a row of perforations along one side edge of the film, and a balance zone juxtaposed with said row of perforations along the one side edge of the film and having various signals recorded thereon in a straight line. These signals include a non-normal projection mode speech information signal, a transfer instruction signal for instructing the transfer of said non-normal projection mode speech signal to a record information member, a transfer stop instruction signal for stopping the transfer, and a reproduce instruction signal for instructing a reproduce mechanism to reproduce the non-normal projection mode speech information signal transferred to said record member. The film structure further includes, on the other side edge thereof, a normal projection mode speech information recording zone which may be reproduced by another reproduce mechanism during normal projection mode. The signals recorded on the balance zone of the audio-visual film structure may be transferred to said record information member during normal projection mode. The signals transferred to the record information member may be reproduced during non-normal projection mode.

Motion picture projector device as audio-visual aid and audio-visual

A film handling system to with which a film cartridge is commonly usable in each step of exposure, processing (developing) and projection of the film housed therein, wherein a safety means which advances the above mentioned film cartridge through each step in which it is used in a prescribed sequence is provided. Further an electric circuit which controls the above mentioned handling system in such manner as to activate said system according to the output of the safety means is provided so that such erroneous handling as occurs when processing or projecting unexposed film by mistake or by projecting unprocessed film can be automatically prevented.

Film handling system employing a common cartridge

The present invention relates to a motion picture camera which includes an openable cover for loading a film magazine containing a film capable of recording sound information. A sound recording device for recording the sound information on the film and a movable device for moving either the sound recording device or the film to a position at which the sound can be recorded is also included. An operation device for operating the opening and the closing of the openable cover can be displaced to three positions, i.e. the first, the second and the third position. The operation is carried out stepwise so that, at the first position, the movable device operates while the openable cover is locked; at the second position, the movable device does not operate while the openable cover is locked; and at the third position, the movable device does not operate while the openable cover is freed. At least one of the three position being non-linear with respect to the other two.

Growing community of inventors

Kunitachi, Japan

Kiyoshi Takahashi