The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 2006
Filed:
Oct. 27, 2004
Nobuyuki Kameyama, Minami-Ashigara, JP;
Hirokazu Yokoo, Minami-Ashigara, JP;
Akihisa Iida, Minami-Ashigara, JP;
Takeshi Kubota, Minami-Ashigara, JP;
Jun Ogawa, Minami-Ashigara, JP;
Kazuo Kamata, Minami-Ashigara, JP;
Nobuyuki Kameyama, Minami-Ashigara, JP;
Hirokazu Yokoo, Minami-Ashigara, JP;
Akihisa Iida, Minami-Ashigara, JP;
Takeshi Kubota, Minami-Ashigara, JP;
Jun Ogawa, Minami-Ashigara, JP;
Kazuo Kamata, Minami-Ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
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.