Fuji Photo Film Company, Limited

Nihon Seimitsu Kogyo Kabushiki Kaisha

Fujifilm Corporation

Fuji Film Co., Ltd.

Nihon Seimitsu Kogyo Kabushikia Kaisha

Kazuo Kamata

Mitsuro Kamata

Takashi Kubo

Yukitsugu Hata

Hisashi Tasaka

Shuichi Ichino

Nobuyuki Kameyama

Hiroshi Komatsuzaki

Yuji Mikami

Sumio Yoshikawa

Syunji Nishimura

Akio Ohmiya

Kuniharu Kitagawa

Hirokazu Yokoo

Akihisa Iida

Takeshi Kubota

Yoshihito Umeda

Hidefumi Obo

Eiji Furuya

Noriya Mochizuki

Jun Ogawa

Daisuke Okamura

Michio Cho

Kiyotaka Kobayashi

Kazumi Koike

Kazuo Okoyama

Tokuji Sato

Kazuhiro Akiyama

Takeshi Masuda

Hirofumi Katsura

Osamu Noguchi

Katsuji Muramatsu

Yasuhiro Nishitani

Toshiyuki Ogura

Shigemitsu Mizutani

Kenji Negishi

Shinsuke Aoshima

Toshio Sata

Hidemi Saito

Takashi Maemori

Takaji Kono

Akio Sata, Legal Representative

Machiko Sata, Legal Representative

Kazuyoshi Sata, Legal Representative

A lens-fitted photo film unit provides a daylight photography mode to select no flash emission and the small stop, a daylight synchro photography mode to select normal flash emission and the small stop, and a night view synchro photography mode to select reduced flash emission and the large stop. The small stop is composed of the small stop aperture of f/16 and an ND filter of transmittance of 25% to be attached to cover the small stop aperture. The shutter speed is set at 1/64 sec. in any modes. The photo film preloaded in the lens-fitted photo film unit has ISO sensitivity. The stable photographing is achieved under the wide range of brightness by the changeover of the stop, without the change of the shutter speed. In brightness of EVto, the exposure amount becomes proper either in the daylight photography mode and in the night view synchro photography mode.

Lens-fitted photo film unit

A front cover, a rear cover and a base portion are crushed into a crushed material, and further pelletized into a recycled plastic pellet. The recycled plastic pellet is used as a part of a molding material to produce mold plastic parts for a photosensitive material. When the molding material is melt in heat, a thermoplastic resin is deteriorated by heat or modified. Therefore, properties and qualities of recycled plastic mold parts are less than those of new ones. Further, when the thermoplastic resin is deteriorated by heat, the photosensitive material reacts with the thermoplastic resin to decomposed products having an bad influence on photographic characteristics. In order to prevent the deterioration by heat, oxidation inhibiting materials are added, and in order to absorb the decomposed products, carbon blacks are added.

Recycled plastic molded parts for photosensitive materials

A flash device for a lens-fitted photo film unit pre-loaded with unexposed photo film is provided. A main capacitor stores charge. A flash emitter emits flash light. A flash circuit board charges the main capacitor, and drives the flash emitter by discharging the main capacitor in response to an exposing operation. A tightly closed flash case is secured to the lens-fitted photo film unit, for containing the main capacitor, the flash emitter and the flash circuit board. Also, the lens-fitted photo film unit includes a sync switch for generating a trigger signal in response to the exposing operation. Two switch contact points are disposed outside the flash case, for receiving the trigger signal from the sync switch. The two switch contact points disable discharge of the main capacitor while the flash case is away from the lens-fitted photo film unit, and are short-circuited for discharge of the main capacitor upon supply of the trigger signal while the flash case is secured to the lens-fitted photo film unit.

Lens-fitted photo film unit, flash device, and lens-fitted photo film system

A lens-fitted photo film unit is pre-loaded with photo film, and includes a viewfinder adapted for observing an object. A selector button is operable externally, for being shifted to a standard position and a telephoto position. A view region changer lever sets the viewfinder in a standard view field when the selector button is in the standard position, and sets the viewfinder in a telephoto view field when the selector button is in the telephoto position, the telephoto view field being included in the standard view field. An information exposure unit photographically records a telephoto discernment PAR code to an information exposure region in the photo film when the selector button is in the telephoto position. The telephoto discernment PAR code includes at least three dots, for designating production of a pseudo telephoto print from a region in an imaging frame in the photo film corresponding to the telephoto view field.

Lens-fitted photo film unit and photofinishing method

An optical adapter comprises an adapter body and a lens member. The lens member is a cylindrical lens having one or more curved surfaces, and has a function to extend an optical image in a horizontal direction. A taking lens and a viewfinder are arranged vertically, and the optical axes of the taking lens and the viewfinder coincide with each other in the horizontal direction. When the adapter body is attached to the front side of the lens-fitted photo film unit, the front surfaces of the taking lens and the viewfinder are covered with the lens member. The center of the lens member in the horizontal direction coincides with centers of the taking lens and the viewfinder in the horizontal direction.

Optical adapter and lens-fitted photo film unit

A shutter device has a shutter drive lever striking a shutter blade to expose an exposure opening, a mooring lever, a cam, and a speed governor. The speed governor includes an escapement wheel with integrally formed two gear wheels, an anchor, and a movable mounting board on which the escapement wheel and anchor are mounted. One of the gear wheels of the escapement wheel is engaged with a claw of the anchor to slow down a rotational speed of the escapement wheel. The other gear wheel is engaged with a shutter speed adjustment gear formed in a periphery of the shutter drive lever. The shutter drive lever rotates at the same rotational speed as the escapement wheel, so that exposure time becomes long. When flash charge is turned off, the mounting board moves to an evacuation position in which the escapement wheel is disengaged with the shutter speed adjustment gear.

Shutter device of lens-fitted photo film unit

Method of recycling molded plastic parts for photosensitive material and recycled plastic molded parts

A stop lever is rotatable on a light shielding tunnel with an exposure aperture. When the stop lever is at a fast shutter speed position, a support pad is located below a lower metal plate of a synchronization switch of a flash circuit. The support pad holds the lower metal plate to limit rotation of a shutter blade, so that photography is carried out at a fast shutter speed. The synchronization switch is turned on after the exposure aperture is fully open. When the stop lever is at a slow shutter speed position, a support pad is away from the lower metal plate to obtain a slow shutter speed. It is possible to obtain a fast shutter speed by providing a light shielding tunnel with a fixed stopper to limit rotation of the shutter speed, and a slow shutter speed by providing a light shielding tunnel without a stopper.

Lens-fitted photo film unit and method for manufacturing lens-fitted photo film unit

A shutter device has a front blade which is biased by a spring to a closed position for closing an exposure aperture, and a rear blade biased by a spring to an open position for opening the exposure aperture. A shutter drive lever kicks the front blade and the rear blade successively while moving to one direction. As soon as the front blade opens the exposure aperture, the rear blade closes the exposure aperture. And while the rear blade is biased by the spring to return to the initial position before opening the exposure aperture, the front blade is biased by the spring to close the exposure aperture. When the front blade and the rear blade return to the initial position by the urge of the spring, the two blades return with partly overlapped each other.

Shutter device for camera

A shutter device loaded in a fixed focus camera for making soft-focus photograph includes a swingable shutter drive member and two shutter blades for opening and closing a shutter opening. When the shutter drive member swings in response to photographing operation, the shutter blades rotate oppositely to each other such that the shutter opening gradually appears. While opening, the shutter blades continuously form a small stop. After a flashlight is emitted during forming the small stop, the shutter blades rotate moreover and the shutter opening is entirely exposed. Then the shutter blades close to cover the shutter opening entirely.

Shutter device of camera

A lens-fitted photo film unit is provided with a movable stop plate formed with small and middle stop apertures. The small stop aperture has a smaller diameter, and the middle stop aperture is larger than the small stop aperture. A fixed large stop aperture, which is larger than the middle stop aperture, is disposed behind the movable stop plate. The movable stop plate is moved to position the small stop aperture at a photographic optical axis when subject brightness is a predetermined reference value or more. Similarly, the middle stop aperture is positioned at the optical axis when the subject brightness is less than the reference value and a flash switch is turned off. Further, the fixed large stop aperture is set to the optical axis when the subject brightness is less than the reference value and the flash switch is turned on.

Stop changing device for a camera

A lens-fitted photo film unit has a body section, a front cover and a rear cover, all of which are plastic parts. These plastic parts are made of raw materials restored from used plastic parts. A plastic parts recycling line is constisuted of a pelletizing line and a non-pelletizing line. In the non-pelletizing line, the used plastic parts are crushed for procuring crushed materials. In the pelletizing line, the crushed materials are melted, extruded and molded into the strand-like resin, which is cut into recycled pellets. The crushed materials are used for forming the plastic parts that are not in contact with a photo film. Meanwhile the recycled pellets are used for forming the plastic parts that are in contact with the photo film.

Lens-fitted photo film unit and manufacturing method therefor

A shutter device includes a shutter blade for opening and closing a shutter opening and a stop plate having a small stop of a shutter opening. While the small stop is disposed on the shutter opening, the shutter blade swings from a primary position responding to operation of shutter release. After the shutter blade leaves the shutter opening, a flashlight is emitted. Thereafter, the stop plate swings sequentially such that the shutter opening may entirely appear, and then the shutter blade swing back to the primary position with covering the small stop.

A lens-fitted photo film unit has a front cover. A logotype indicating a manufacturer or a brand is formed in a hollow of the front cover. Either a transparent supplement cover or an opaque supplement cover is fitted in this hollow. The transparent supplement cover is selected upon using the logotype of the front cover. The opaque supplement cover is selected upon covering the logotype of the front cover. Another logotype is formed on this opaque supplement cover.

Growing community of inventors

Kanagawa, Japan

Kazuo Kamata