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, 1984
Filed:
May. 05, 1981
Yoshinori Honkawa, Fuchu, JP;
Ryobi Ltd., Hiroshima, JP;
Abstract
A device for preventing irregular supplying of printing sheets in a printing machine in which the supply of two or more printing sheets stuck together is positively prevented even if the quantity of light passing through a printing sheet is changed such as by a change in an original plate. A detection circuit detects the quantity of light passing through the printing sheets. The output of the detection circuit is coupled to a memory circuit which is activated to store a value representing a quantity of light corresponding to a single printing sheet. This operation is performed in advance before a printing operation is started. A control circuit operated by the memory circuit controls the printing machine operation such that the sheet supplying operation is suspended when the quantity of light detected by the detection circuit is less than the value stored in the memory circuit.