Having Threading Structure Patents (Class 396/415)
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Patent number: 6965134Abstract: An image pick-up unit includes an image pick-up device; and a plurality of optical filters which are cemented together in layers and positioned in front of the image pick-up device. At least two optical filters among the plurality of optical filters, which have different optical properties, are different in shape from each other.Type: GrantFiled: November 19, 2003Date of Patent: November 15, 2005Assignee: PENTAX CorporationInventors: Makoto Mogamiya, Teruo Sakai
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Patent number: 6814325Abstract: There is a film-press spring for pressing a photographic film on a take-up spool in a take-up chamber. The film-press spring has a main body for guiding a leading end of the photographic film at the beginning of the film winding and a plate bended in U-shape against the main body. A pressing arm which is protruded from the main body presses the photographic film to a periphery of the take-up spool. And a fitting arm which is elastic enough to be transformed is protruded from the plate. When inserted into the spring attachment hollow of the take-up chamber, the fitting arm presses the wall surface of the spring attachment hollow. And a slipping prevention claw of the plate is engaged with the wall surface of the spring attachment hollow.Type: GrantFiled: March 1, 2002Date of Patent: November 9, 2004Assignee: Fuji Photo Optical Co., Ltd.Inventor: Takashi Kamoda
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Patent number: 6665493Abstract: A camera film feed device is provided for enabling freely loadable placement of a film magazine which has a takeup shaft on which a film is wound and which has a film leader protruding from a film feeding opening. The camera film feed device includes a magazine chamber into which the film magazine is loaded, a fork which joins in mating fashion with the takeup shaft of the film magazine loaded into the magazine chamber, a takeup spool which is positioned on a side of a photographing aperture opposite the magazine chamber and which takes up the film, a sprocket which is positioned between the magazine chamber and the takeup spool, and a control circuit which controls the operations of the fork, takeup spool and sprocket.Type: GrantFiled: October 3, 2001Date of Patent: December 16, 2003Assignee: Olympus Optical Co., Ltd.Inventors: Satoshi Miyazaki, Kazuki Sakurai, Ikko Mori
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Patent number: 6526228Abstract: In a film camera production method, a leading portion of a filmstrip is draped across a midsection of a camera frame. The camera frame has a film roll chamber joined to the midsection. A free end of the leading portion is lodged in the film roll chamber and a retention zone of the filmstrip is placed in engagement with a retention structure mounted to the frame. The retention zone adjoins the free end. The retention structure is fixed in position on the frame. The engagement of the retention zone and retention structure locks the leading portion against longitudinal travel toward the film roll chamber. The frame is transported and, during the transporting, the engagement of the retention zone and retention structure is maintained. Following the transporting, the retention zone is pulled off the retention structure.Type: GrantFiled: April 26, 2001Date of Patent: February 25, 2003Assignee: Eastman Kodak CompanyInventors: Joseph A. Watkins, Peter A. Wacht
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Patent number: 6507712Abstract: A camera in which a magazine can be loaded into a magazine chamber in the direction along a winding shaft thereof in a state in which a film leader is wound thereon. During such magazine loading, the film leader is inserted along the outer periphery of a film guide disposed in the magazine chamber. After the magazine has been loaded, the film leader is temporarily rewound into the magazine. Then, it is fed toward a spool chamber. The film leader that has reached the spool chamber is advanced by the spool and film loading is completed. By employing such a loading mechanism, it is possible to provide a camera incorporating a film loading mechanism with a simple structure which is capable of reliable film loading and making it possible, in cameras using 135-type film magazine, to load a magazine in the axial direction thereof.Type: GrantFiled: October 4, 2001Date of Patent: January 14, 2003Assignee: Olympus Optical Co., Ltd.Inventors: Ikko Mori, Tetsuya Takagi, Kazuki Sakurai, Moriya Katagiri
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Publication number: 20020176706Abstract: In a camera frame assembly, a frame includes a film return chamber, a film roll chamber spaced apart from the film return chamber, and a midsection extending between the chambers. The midsection has a pair of film guide surfaces that define a film path between the chambers. A holdfast is joined in fixed relation to the midsection adjacent the film roll chamber. The holdfast extends outward from the midsection toward the film path. The holdfast is fully outside the film path. A film unit has a film holder and a filmstrip. The film holder is seated in the film return chamber. The filmstrip has a leading portion having a free end and a grip adjoining the free end. The filmstrip has a main portion adjoining the leading portion. The filmstrip is movable between a first position in which the grip engages the holdfast and a second position in which the main portion occupies the film path and extends from one of the chambers to the other.Type: ApplicationFiled: April 26, 2001Publication date: November 28, 2002Applicant: Eastman Kodak CompanyInventors: Joseph A. Watkins, Peter A. Wacht
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Patent number: 6461060Abstract: A cassette chamber, a take-up chamber and a battery room are formed on a main body. A rear cover is attached to the main body. The rear cover is molded from plastics and integrated with an outer cover section and a frame section. In the frame section, a light-shielding segment is integrally formed. The light-shielding segment is positioned between the take-up chamber and the battery room in order to form a partition wall between these components.Type: GrantFiled: December 6, 2001Date of Patent: October 8, 2002Assignee: Fuji Photo Optical Co., LTDInventor: Akio Omiya
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Publication number: 20020044777Abstract: In the camera according to the present invention, a magazine can be loaded into a magazine chamber in the direction along a winding shaft thereof in a state in which a film leader is wound thereon. During such magazine loading, the film leader is inserted along the outer periphery of a film guide disposed in the magazine chamber. After the magazine has been loaded, the film leader is temporarily rewound into the magazine. Then, it is fed toward a spool chamber. The film leader that has reached the spool chamber is advanced by the spool and film loading is completed. By employing such loading mechanism, it is possible to provide a camera incorporating a film loading mechanism with a simple structure which is capable of reliable film loading and making it possible, in cameras using 135-type film magazines, to load a magazine in the axial direction thereof.Type: ApplicationFiled: October 4, 2001Publication date: April 18, 2002Applicant: Olympus Optical Co., Ltd.Inventors: Ikko Mori, Tetsuya Takagi, Kazuki Sakurai, Moriya Katagiri
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Patent number: 6361224Abstract: A film transport device includes a spool arranged to take up and wind thereon a film pulled out from a film cartridge, a motor disposed within the spool, a spool gear arranged to have an output of the motor transmitted thereto and to drive the spool, the spool gear being arranged to be coaxial with the spool and to drive the spool only by the rotation in one direction thereof, and a film cartridge driving mechanism arranged to transmit the output of the motor to a film cartridge through the spool gear.Type: GrantFiled: November 29, 1999Date of Patent: March 26, 2002Assignee: Canon Kabushiki KaishaInventor: Ryoji Okuno
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Publication number: 20020021900Abstract: The present invention relates to a leader card with protrusions, which are extended in the counter direction with respect to the transport direction of the leader card with the film attached thereto, said protrusions being provided with traction sections which can be brought into engagement with holes in the leading end of the film. Additionally, the invention relates to an attaching and a detaching device to attach and to detach, respectively, the leader card to and from the film.Type: ApplicationFiled: July 17, 2001Publication date: February 21, 2002Applicant: San Marco Imaging Sr1Inventors: Danny Lant, Eni Scodellaro
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Patent number: 6328486Abstract: A camera includes a camera body having formed integrally therewith a film-travel guide part in a film exposing position and a fixed photo-taking lens barrel, and a photo-taking image frame forming member mounted in the film exposing position on the camera body.Type: GrantFiled: December 21, 1998Date of Patent: December 11, 2001Assignee: Canon Kabushiki KaishaInventor: Takanori Honda
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Patent number: 6283645Abstract: A camera has a rear backframe (exposure) opening, including a pair of spaced opposite ends across which successive sections of a filmstrip are moved for each section of the filmstrip to be advanced over the backframe opening. A pair of parallel film rails have longitudinal film support surfaces that support each section of the filmstrip over the backframe opening. A pair of parallel film debris catching combs are positioned between the film rails, proximate respective ones of the opposite ends of the backframe opening, and inwardly of the longitudinal film support surfaces to remove any debris from each section of the filmstrip before that section is advanced over the backframe opening. One of the film debris catching combs preferably is positioned inwardly of the film support surfaces farther than the other comb.Type: GrantFiled: January 26, 2000Date of Patent: September 4, 2001Assignee: Eastman Kodak CompanyInventors: Michael P. Cramer, James D. Boyd, Stephen J. Smith
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Patent number: 6276846Abstract: A camera comprising a cartridge receiving chamber for a film cartridge with a filmstrip having a protruding film leader, a film door that opens and closes to uncover and re-cover the chamber, a backframe opening for exposing successive sections of the filmstrip, a film platen positioned over the backframe opening to support each section of the filmstrip at the backframe opening, and a film support positioned within the backframe opening to prevent the film leader from becoming jammed in the backframe opening when the film cartridge is placed in the chamber, is characterized in that the film platen is movable to at least partially uncover the backfrane opening in order to provide a film entry zone for the film leader into the backframe opening when the film door is opened, and the film support is coupled with the film platen for movement to the film entry zone to be positioned to prevent the film leader from becoming jammed in the backframe opening when the film platen is moved to partially uncover the backfraType: GrantFiled: January 6, 2000Date of Patent: August 21, 2001Assignee: Eastman Kodak CompanyInventors: Patricia L. Williams, Dennis R. Zander
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Patent number: 6186678Abstract: A camera body includes an aperture unit, having a picture-taking opening and guide rails for defining the position of a film in the direction of an optical axis with respect to the picture-taking opening, a cartridge chamber unit connectable with one end of the aperture unit, and a spool chamber unit connectable with the other end of the aperture unit. At least one of a film exit port of the cartridge chamber unit and a film entrance port of the spool chamber unit includes guide portions that define the position of a film in the direction of the width of the film that is paid out from a film cartridge.Type: GrantFiled: January 5, 1999Date of Patent: February 13, 2001Assignee: Olympus Optical Co., Ltd.Inventors: Koji Kato, Toru Komatsu
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Patent number: 6138941Abstract: The invention relates to a flange for a hollow article which can be easily separated from an end of the hollow article such as a paper tube, after a roll of photosensitive material or the like is used up. A flange 20, detachably attached to an end of a hollow article 21, comprises a disk 1 having a concentric hole 2 in a center thereof, a hollow cylindrical inserting member 3 extending from hole 2 along a center axis thereof, and two flexible segments 6 extending from hollow cylindrical inserting member 3 in a cantilevered manner, and symmetrically with respect to the center axis and along the center axis, and including a mechanism 8 or 10 provided between two flexible segments 6 for spacing the foremost ends of two flexible segments 6 away from each other or bringing them back to original positions thereof.Type: GrantFiled: January 26, 1999Date of Patent: October 31, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Yoshiaki Miyake
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Patent number: 6106163Abstract: A windup reel is formed at a step reel which has a small diameter section and a large diameter section. The large diameter section is formed in such a direction as to press a lower edge of photographic film against a guide pin. When a leader section of transported photographic film is wound on the windup reel, the leader section tries to fit the surface of the large diameter section. For this reason, the force is applied to the photographic film so that the photographic film can move toward the large diameter section. The photographic film moves toward the guide pin, and the edge of the photographic film is pressed against the guide pin. Thereby, the photographic film is transported along the guide pin.Type: GrantFiled: March 13, 1998Date of Patent: August 22, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuya Inana, Kenichi Hoshi
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Patent number: 6033128Abstract: The present invention is a photographic roll film which includes a photographic film strip and a light shielding paper secured to the photographic film strip. The backing paper has a leader which includes at least one cinch tab extending out of a plane of the light shielding paper. The present invention is a photographic roll film which includes a photographic film strip and a light shielding paper secured to the photographic film strip. The backing paper has a leader which includes a front edge, and two side edges. At least one cinch tab extends out of a plane of the backing paper, the cinch tab formed by the front edge, a side edge and a cut forming a cut angle of greater than 90.degree. with a long axis of the leader. The present invention is a photographic roll film which includes a photographic film strip and a light shielding paper secured to the photographic film strip. The backing paper has a leader having a front edge.Type: GrantFiled: December 3, 1998Date of Patent: March 7, 2000Assignee: Eastman Kodak CompanyInventors: Raymond P. Krais, Barry M. Brown, Rickey J. Seyler
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Patent number: 5988894Abstract: An easy-load camera comprising a cartridge receiving chamber for receiving a film cartridge with a protruding film leader that has one longitudinal edge extending straight from a reduced-width forward-most leader portion to a full-width leader portion following the reduced-width leader portion and an opposite longitudinal edge extending curved from the reduced-width leader portion to the full-width leader portion, and a leader insertion slot for first receiving the reduced-width leader portion and then receiving the full-width leader portion when the film leader is inserted into the leader insertion slot, is characterized in that an inclined film edge guide is located between the cartridge receiving chamber and the leader insertion slot to contact the longitudinal edge that extends curved from the reduced-width leader portion to the full-width leader portion, but only at the reduced-width leader portion and not at the full-width leader portion, when the film leader is inserted into the leader insertion slot,Type: GrantFiled: August 19, 1998Date of Patent: November 23, 1999Assignee: Eastman Kodak CompanyInventor: Dennis R. Zander
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Patent number: 5984535Abstract: The present invention is related to a camera having a film wind spool with an insertion slot for receiving a film leader, a counter roller at a film supply side of the film wind spool, and a film winding device having a plate-shaped guide member between the film wind spool and the counter roller for guiding the film leader from the film supply side to the insertion slot of the film wind spool when the guide member is in a first position. The guide member further includes two end pieces, each of the two end pieces are pivotally connected to a different axial end of the counter roller. A rear cover is provided on the camera that opens to expose the film winding device and has an interior projection. The film winding device further includes a flange protruding from the film winding device in a position corresponding to the interior projection when the rear cover is closed.Type: GrantFiled: September 8, 1997Date of Patent: November 16, 1999Assignees: Fuji Photo Film Co., Ltd., Fuji Photo Optical Co., Ltd.Inventors: Hiroshi Fukuda, Shiro Hashimoto, Nobuhiro Aoki
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Patent number: 5940643Abstract: A camera comprising a cartridge receiving chamber for receiving a film cartridge with a filmstrip having a film leader, a backframe opening at which the filmstrip is to be exposed during picture-taking, and a guide arrangement located to facilitate movement of the film leader towards the backframe opening when the film cartridge is placed in the cartridge receiving chamber, is characterized in that the guide arrangement has a pair of leader guide surfaces, a first one of which is configured to guide a curled corner segment of a reduced-width leading portion of the film leader, and a second one of which is configured to guide a curved transitioning longitudinal edge segment intermediate the reduced width leading portion of the film leader and a full width portion of the film leader.Type: GrantFiled: February 3, 1998Date of Patent: August 17, 1999Assignee: Eastman Kodak CompanyInventor: Timothy J. Fuss
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Patent number: 5940650Abstract: A windup reel is formed at a step reel which has a small diameter section and a large diameter section. The large diameter section is formed in such a direction as to press a lower edge of photographic film against a guide pin. When a leader section of transported photographic film is wound on the windup reel, the leader section tries to fit the surface of the large diameter section. For this reason, the force is applied to the photographic film so that the photographic film can move toward the large diameter section. The photographic film moves toward the guide pin, and the edge of the photographic film is pressed against the guide pin. Thereby, the photographic film is transported along the guide pin.Type: GrantFiled: February 19, 1997Date of Patent: August 17, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuya Inana, Kenichi Hoshi
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Patent number: 5930541Abstract: A camera comprising a cartridge receiving chamber for a film cartridge with a filmstrip including a film leader, a film takeup chamber, a backframe opening located between the cartridge receiving chamber and the film take-up chamber, a metering sprocket for engaging the filmstrip, and a film slit between the cartridge receiving chamber and the backframe opening to permit the film leader to be longitudinally inserted through the film slit from the cartridge receiving chamber across the backframe opening and to the film take-up chamber when the film cartridge is placed in the cartridge receiving chamber, is characterized in that a film guide is supported for movement in a first direction relative to the metering sprocket to be able to guide the film leader over the metering sprocket when the film leader is inserted through the film slit from the cartridge receiving chamber across the backframe opening and to the film take-up chamber and for movement in a reverse direction relative to the metering sprocket to beType: GrantFiled: June 19, 1997Date of Patent: July 27, 1999Assignee: Eastman Kodak CompanyInventor: Dennis R. Zander
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Patent number: 5918083Abstract: A camera is used with a Brownie photo film, which has a photo filmstrip on which plural frames are formable serially. A light-shielding leader is disposed on a front end of the photo filmstrip. A light-shielding trailer is disposed on a rear end of the photo filmstrip. The Brownie photo film is wound about a supply spool with the trailer positioned inside and with the leader positioned outside. In the camera, a photo film supply chamber is formed for loading of the Brownie photo film. A photo film take-up chamber has a take-up spool disposed in a rotatable manner, for winding the Brownie photo film from the photo film supply chamber. The take-up spool has a spool core, and an insertion slit for receiving insertion of the leader through the spool core. A drive shaft in the photo film supply chamber rotates the take-up spool, to transport the Brownie photo film to the photo film take-up chamber and wind the Brownie photo film about the take-up spool. A motor rotates the drive shaft.Type: GrantFiled: February 18, 1998Date of Patent: June 29, 1999Assignees: Fuji Photo Optical Co., Ltd., Fuji Photo Film Co., Ltd.Inventors: Nobuhiro Aoki, Shigenori Goto, Hisashi Hamada
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Patent number: 5909601Abstract: A camera including a cartridge receiving chamber for a film cartridge with a filmstrip including a film leader, a film take-up chamber, a backframe opening located between the cartridge receiving chamber and the film take-up chamber, a film platen located over the backframe opening, a film slit between the cartridge receiving chamber and the backframe opening to permit the film leader to be longitudinally inserted through the film slit from the cartridge receiving chamber across the backframe opening and to the film take-up chamber when the film cartridge is placed in the cartridge receiving chamber, and a film support movable to a leader supporting position within the backframe frame opening to prevent the film leader from becoming jammed in the backframe opening and for guiding the film leader to the film take-up chamber, is characterized in that the film platen is supported for movement in a first direction relative to the backframe opening to move the film support to its leader supporting position and forType: GrantFiled: June 19, 1997Date of Patent: June 1, 1999Assignee: Eastman Kodak CompanyInventor: Dennis R. Zander
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Patent number: 5878297Abstract: In a camera using a cartridge (1) which includes flexible flanges (5), (6) having loose film wind preventive annular juts and being formed at both ends of a spool (3) in the cartridge, and in which pressing forces operate on film in a width direction of the film due to the juts of the flanges, curl leveling forces to be applied to deformed portions of the film caused by the pressing forces are reduced by means of concave surfaces (9c), (9e) formed at given locations on rail planes (9a) and feed walls (9d) constituting a film feed path, and good film flatness is thus ensured.Type: GrantFiled: October 15, 1996Date of Patent: March 2, 1999Assignee: Olympus Optical Co., Ltd.Inventors: Yasuo Asakura, Shinya Takahashi
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Patent number: 5774757Abstract: A camera comprising a backframe opening for exposing successive sections of a filmstrip in a film exposure plane, and a deflector pivotally supported at one end of the backframe opening to permit a leading edge of the filmstrip to pivot the deflector away from the backframe opening to allow the leading edge to be advanced over the deflector rather than become trapped in the backframe opening, is characterized in that the deflector is supported to be pivoted about an inclined axis that extends at an acute angle with respect to the film exposure plane.Type: GrantFiled: August 12, 1997Date of Patent: June 30, 1998Assignee: Eastman Kodak CompanyInventors: Dennis R. Zander, Robert L. Storey
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Patent number: 5774756Abstract: A camera comprising a backframe opening for exposing successive sections of a filmstrip, and a deflector supported at one end of the backframe opening for movement to permit a leading edge of the filmstrip which is advanced against the deflector to move the deflector away from the backframe opening to allow the leading edge to be advanced over the deflector rather than become trapped in the backframe opening, is characterized in that the deflector is flexible and has at least one fixed peripheral side and at least two adjacent free peripheral sides to permit the deflector to be flexed away from the backframe opening at the free peripheral sides, but not at the fixed peripheral side, when the leading edge of the filmstrip is advanced against the deflector.Type: GrantFiled: August 12, 1997Date of Patent: June 30, 1998Assignee: Eastman Kodak CompanyInventor: Dennis R. Zander
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Patent number: 5761557Abstract: One end of both pinch roller shafts of a pair of pinch rollers is arranged at the first bearing member, and at the second bearing member the other end is arranged. The first and second bearing members are supported rotatably around a supporting shaft provided in a holder. Hence, the capstan roller can remain tightly in contact with the pinch roller, and the film can be prevented from sliding on the capstan, so that the film can be transported accurately.Type: GrantFiled: October 9, 1996Date of Patent: June 2, 1998Assignee: Fuji Photo Film Co., Ltd.Inventor: Masaaki Orimoto
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Patent number: 5754905Abstract: A camera according to the present invention is arranged to introduce the leading end portion of a film accommodated in a film cartridge into a slit portion formed between a pressure plate member and a camera body, by rotating the spool of the film cartridge loaded in the camera. The camera includes a gate portion formed adjacent to an inlet portion of the slit portion, for guiding the leading end portion of the film, and the gate portion is formed by utilizing a member which constitutes the slit portion.Type: GrantFiled: September 20, 1996Date of Patent: May 19, 1998Assignee: Canon Kabushiki KaishaInventor: Harushige Yamamoto
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Patent number: 5752110Abstract: An apparatus in which photographic film is fed out of a film cartridge and is led through a film path to a spool chamber to be wound on a take-up spool includes a film guide that extends from the end of the film path toward the spool chamber. The film guide reliably guides the film, which has been led to the spool chamber, to the take-up spool. The film guide ensures that the film is properly wound on the take-up spool by preventing it from prematurely curling within the spool chamber. The film guide also ensures that magnetic recording operations performed on the film by a recording head, if present, are also reliably performed.Type: GrantFiled: August 29, 1996Date of Patent: May 12, 1998Assignee: Nikon CorporationInventors: Shuji Iijima, Akio Nishizawa
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Patent number: 5746383Abstract: The film forwarding device of the present invention includes: a take up spool which takes up a film upon a circumferential outer surface of the take up spool, the film having, upon a leading end of the film, a projecting portion a normal line to which is substantially parallel to a direction of forwarding of the film, and a sloping portion, connected to the projecting portion, which slopes with respect to a transverse direction perpendicular to the direction of forwarding the film; a pressure member which presses the film against the circumferential outer surface of the take up spool; and an advancing mechanism which pushes out the film from a film cartridge and advances the film at least until taking up of the film by the take up spool has started, wherein the pressure member is located so as to initially come into contact with the projecting portion of the leading end of the film, when the taking up of the film by the take up spool starts.Type: GrantFiled: April 15, 1996Date of Patent: May 5, 1998Assignee: Nikon CorporationInventor: Akira Ezawa
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Patent number: 5737653Abstract: A camera capable of magnetic recording includes a pressing pad for a magnetic head. The pressing pad is secured to the camera body and the head is made movable in order to increase the proximity of the head to the film and to enable reliable application to a low-cost, compact focal plane shutter camera. Above and below the aperture in the camera body, there are provided a pair of film rails and a pair of pressure plate rails formed so as to be higher than the film rails. An extended portion is formed on the film rail, and in the center of the extended portion, a recessed portion is made. A graded portion is formed to the left side of the extended portion, and a circular arc portion is formed to its left side. Below the pressure plate, there are provided a hole through which the magnetic head is secured to an actuating member with a mounting portion pressing the film, and a pair of stoppers for limiting the displacement of the magnetic head in the optical axis direction.Type: GrantFiled: September 10, 1996Date of Patent: April 7, 1998Assignee: Olympus Optical Co., Ltd.Inventor: Masaki Tokui
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Patent number: 5732300Abstract: A mounting mechanism of a camera having a film take-up spool is provided for mounting a film pressing roller on a camera body. The mounting mechanism includes a back cover, a roller supporting arm, an elastic member and a pressing device. The back cover is rotatably supported by the camera body. One end of the roller supporting arm is rotatably mounted to the camera body, and another end of the roller supporting arm is provided with the film pressing roller. The elastic member is provided on the camera body and engages with the roller supporting arm to hold the film pressing roller at a predetermined position spaced from the film take-up spool when the back cover is opened. The pressing device is provided on the back cover for pressing the elastic member toward the film take-up spool when the back cover is closed, so that the roller supporting arm is biased toward the film take-up spool by the biasing force of the elastic member to thereby press the film pressing roller toward the film take-up spool.Type: GrantFiled: August 30, 1996Date of Patent: March 24, 1998Assignee: Asahi Kogaku Kogyo Kabushiki KaishaInventor: Tetsuo Hosokawa
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Patent number: 5682566Abstract: A contact position at which the photographic film sent out from a film cartridge first contacts a film guide means is determined in such a manner that the photographic film does not contact a film entrance of the film cartridge when a film winding diameter in the film cartridge is at its maximum, and that only the edges of the photographic film, which curls in a direction of its breadth, which is not an image area, contacts the film entrance when the film winding diameter is at its minimum. As a result, the image area on the film is not damaged if the film is transported back and forth many times, and dust which causes damage to the film can be reduced.Type: GrantFiled: September 20, 1995Date of Patent: October 28, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Makoto Nakazawa, Masaaki Orimoto, Sueo Itoh, Shouji Watanabe
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Patent number: 5666581Abstract: A film initial-advance apparatus for a camera which enables the initial advance of a film by a reciprocating feeding claw, and in which a gear train for film feeding and driving members are disposed on the same side of a spool. A feeding member is disposed on a reciprocating driving member which reciprocates in the direction of film feeding. A gear train for feeding the film is connected to the driving gear on the side of the reciprocating driving member, and the rotational driving force of the driving gear is transduced to the reciprocating movement for reciprocating the reciprocating driving member. A cam groove is formed in the reciprocating driving member, and the feeding claw is advanced toward and withdrawn from a perforation of the film. The speed of the reciprocating movement of the reciprocating driving member is set to be lower than the film feeding speed.Type: GrantFiled: March 25, 1996Date of Patent: September 9, 1997Assignee: Fuji Photo Optical Co., Ltd.Inventor: Takashi Kamoda
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Patent number: 5619740Abstract: A film loading apparatus for preventing the breakage or enlargement of a film perforation. The apparatus comprises a spool having catches each of which engages a perforation of film, and a film feeding member having a claw which reciprocatingly moves in synchronism with the rotation of the spool. No catch is provided at the portion of the spool which passes a film engaging position at the time of backward movement of the film feeding member and in a predetermined range between that portion and the portion which passes the film engaging position at the time of forward movement of the film feeding member. No catch is engaged with a perforation of the film during or immediately before backward movement of the film feeding portion, thereby preventing the breakage or enlargement of a film perforation.Type: GrantFiled: March 9, 1995Date of Patent: April 8, 1997Assignee: Fuji Photo Optical Co. LtdInventors: Kazuhiko Onda, Yasuhiko Tanaka
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Patent number: RE36184Abstract: A camera according to the present invention is a camera which feeds a film from a film feed opening of a patrone chamber and it includes a film feeder for feeding the film drawn from the film feed opening to a spool chamber through a film exposure portion, a detector for detecting whether or not the fed film passes through the film exposure portion, and a controller for controlling operation of the film feeder in response to an output of the detector.Type: GrantFiled: October 19, 1995Date of Patent: April 6, 1999Assignee: Minolta Co., Ltd.Inventors: Takahisa Shimada, Junichi Tanii, Ikushi Nakamura, Masaaki Chikasaki, Sadafusa Tsuji