Shredder

Abstract

PURPOSE: To obviate the stop, etc., of the device by an erroneous detection and to improve reliability by making judgment that a container is full of paper leaves when the detection of the paper leaves by reflection type optical sensors continues for a specified period of time or longer by a full detecting means. CONSTITUTION: The paper leaves charged to the device are shredded and the shredded paper leaves are deposited and stored in the container 11. The reflection type optical sensors 5, 6 are installed toward this container 1. The full detecting means judges that the container 11 is full of the paper leaves when the detection of the paper leaves by the reflection type optical sensors 5, 6 continues for the specified period of time or longer. As a result, the paper leaves under falling (shredding dust) and the deposited paper leaves (shredding dust) are surely identified and the stop, etc., of the device by the erroneous detection are obviated and the reliability is improved. COPYRIGHT: (C)1990,JPO&Japio

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Patent Citations (5)

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    JP-S5849486-AMarch 23, 1983Tokyo Shibaura Electric CoApparatus for controlling supply of papers and leaves
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    US-5765765-AJune 16, 1998Komatsu Ltd.Method of and apparatus for driving a crushing machine
    US-7823815-B2November 02, 2010Fellowes, Inc.Shredder with self adjusting sensor
    US-7823816-B2November 02, 2010Fellowes, Inc.Shredder with light emitting diode (LED) sensors
    US-8028942-B2October 04, 2011Fellowes, Inc.Bin full detection with light intensity sensing
    US-8336792-B2December 25, 2012Fellowes, Inc.Bin level detection with light intensity sensing
    US-8870106-B2October 28, 2014Fellowes, Inc.Shredder with thickness detector
    US-9669410-B2June 06, 2017ACCO Brands CorporationShredding machine
    US-9724704-B2August 08, 2017Fellowes Inc.Shredder thickness with anti-jitter feature
    WO-9604075-A1February 15, 1996Komatsu Ltd.Shredder driving method and apparatus