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:
Jan. 24, 1995
Filed:
Nov. 17, 1992
Applicant:
Inventors:
Sumiaki Hirata, Aichi, JP;
Kazunobu Maekawa, Toyokawa, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; H04M / ;
U.S. Cl.
CPC ...
355206 ; 355208 ; 379106 ;
Abstract
In a method and system for controlling a plurality of copying machines, plural control units respectively associated with the copying machines are connected with one another by means of a private branch exchange (PBX) telephone system. A control unit calls one or more of the other control units, internally through the extension lines of the PBX, at a prescribed data and time, to detect any abnormality in the operation of the called unit. If an abnormality is detected, a call is placed to a control center located external to the PBX, to thereby inform the control center of the detected abnormality.