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:
Jun. 04, 2019
Filed:
Aug. 07, 2018
Kyocera Document Solutions Inc., Osaka, JP;
Tomoyuki Kikuta, Osaka, JP;
KYOCERA Document Solutions Inc., Osaka, JP;
Abstract
A sheet feeding device includes a cassette and a first sensor unit. The first sensor unit includes a first conductive plate and a first coil circuit board, so as to output a first output value corresponding to a position of the first conductive plate. A first moving mechanism moves the first conductive plate according to remaining quantity of paper sheets. The first conductive plate is attached to the cassette. The first coil circuit board is not attached to the cassette. A control unit determines current remaining quantity of paper sheets based on a magnitude of the first output value. The control unit determines whether or not the cassette is attached based on the magnitude of the first output value and a reference value.