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:
Dec. 06, 1977
Filed:
Apr. 01, 1975
Kazuo Miyazaki, Kawasaki, JA;
Sachio Ohmori, Yokohama, JA;
Nippon Kogaku K.K., Tokyo, JA;
Abstract
An improved data exposure device for a camera is provided with a flash starting voltage detecting circuit for generating a signal indicating that the voltage across a flash capacitor rises a predetermined level sufficient to turn on a flash lamp to emit a suitable amount of light on exposure surface upon which data is recorded, a trigger circuit including a trigger capacitor for triggering said flash capacitor and a switching element actuatable for discharging said trigger capacitor, and a synchro circuit including a synchro switch closed when a shutter is released for actuating said switching element when said signal is generated while said synchro switch is closed. An improvement is that said synchro circuit is prevented from actuating said switching element when said synchro switch is closed under the condition that the voltage across said flash capacitor is less than a predetermined level sufficient to cause said flash lamp to start to flash.