Konica Corporation

Kazuhisa Aratame

Kijiro Suzuki

Kei Kaneiwa

Hiromi Nakanishi

Shuri Mizoguchi

Masami Fujita

Kiyoaki Hazama

Takao Hosaka

Yuichi Atarashi

Toshifumi Iijima

Kiyoshi Yamashita

Hiroshi Kibayashi

Hideaki Haraga

Tetsufumi Takaba

Hiroshi Yamaguchi

Ken Ishida

Yoshichika Noda

Kijirou Suzuki

Hideaki Ono

Mamoru Kawano

Akihiko Fujiwara

Tsutomu Kako

Jun Kitahara

A lens-fitted film unit and production thereof, wherein lens-fitted film unit has a front cover, a rear cover, a main body and a magazine chamber lid to take out a film magazine from a film magazine chamber located in the main body, below the film magazine chamber and at the bottom surface of the lens-fitted film unit. The front cover, rear cover and main body have respectively a rib, and the surrounding of the lower portion of the film magazine chamber is surrounded by the rib of the front cover, the rib of the rear cover and the rib of the main body. After the rear cover is attached, the film magazine chamber lid is attached so that the magazine chamber lid is fixed to the front and rear cover and is not fixed to the main body.

Lens-fitted film unit

Single use camera with built-in electronic flash

A lens-fitted film unit including a main body; a photographic film, pre-loaded in the main body; an electronic flash unit; a shutter unit; a camera lens; and a diaphragm. In the lens-fitted film unit, a guide number of the electronic flash unit, a T-number determined from the camera lens and the diaphragm and a shutter speed of the shutter unit are determined so that A is not more than 8.5 when A represents an EV value of a reference exposure amount of the lens-fitted film unit under a stroboscopic photographing state minus 1.5; and intensity of a latent image, formed on the photographic film under the condition that a reference reflection panel being placed at a predetermined distance between 2-3 m from the lens-fitted film unit is illuminated by the electronic flash unit without other lights in the stroboscopic photographing state, corresponds to intensity of a latent image obtained under a photographing condition of photographing luminance not more than A&plus;5.0 in EV value.

Lens-fitted film unit with a built-in electronic flash unit and image forming method based on a photographic film exposed by the lens-fitted film unit with a built-in electronic flash unit

A strobe circuit for use in a lens-fitted film unit is composed of a metallic thin plate punched in a circuit pattern; and insulating plate materials covering both obverse and reverse surfaces of the metallinc thin plate; wherein a part of the metallic thin plate is used as a component of the strobe circuit.

Growing community of inventors

Kobe, Japan

Kazuhisa Aratame