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:
Nov. 01, 1988
Filed:
Nov. 04, 1987
Applicant:
Inventors:
Yuji Yasuda, Tokyo, JP;
Yoshiyuki Tanimoto, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 69 ; 355 75 ; 355120 ;
Abstract
A flash lamp type device for illuminating an original document insures safety operation by alerting an operator, by an alarm, display and others, to the breakage of a glass platen and/or the open position of a protective cover which may occur while the voltage charge in a capacitor is higher than any desired voltage. A trigger circuit associated with a trigger wire is disenabled by sensing the breakage of a glass platen and/or the open position of the protective cover.