Title:
三角形状のインダクタコイルを有する検出器
Document Type and Number:
Japanese Patent JP6742438
Kind Code:
B2
Abstract:
A document feeder may include a media transporter to feed a number of sheets of media through a feed path and a detector to detect the presence of a metal object including a number of triangular-shaped inductor coils to detect the metal objects. A method of detecting a metal object coupled to a sheet of media entering a document processing device may include applying an alternating current to a number of triangular-shaped inductor coils to create a magnetic field upstream of a media feed path, detecting a change in a magnetic flux of the magnetic field due to a metal object in the path of said magnetic flux, and producing a warning when the changes in the magnetic flux are detected.
Inventors:
Allman, Stuart
Application Number:
JP2018556853A
Publication Date:
August 19, 2020
Filing Date:
July 06, 2016
Export Citation:
Assignee:
Hewlett-Packard Development Company
Hewlett-Packard Development Company, L.P.
Hewlett-Packard Development Company, L.P.
International Classes:
G01V3/10; B65H7/02; G03G15/00; G03G21/00; G03G21/16
Domestic Patent References:
| JP2013134227A | ||||
| JP2009166952A | ||||
| JP2008203240A | ||||
| JP2004040465A | ||||
| JP2005516199A | ||||
| JP53147747U | ||||
| JP48051351U | ||||
| JP2015211536A | ||||
| JP2010276351A |
Foreign References:
| US4433528 |
Attorney, Agent or Firm:
Shoichi Okuyama
Matsushima Tetsuo
Ayako Nakamura
Satoshi Morimoto
Yu Tanaka
Tokumoto Koichi
Akiko Mizushima
Arihara Koichi
Matsushima Tetsuo
Ayako Nakamura
Satoshi Morimoto
Yu Tanaka
Tokumoto Koichi
Akiko Mizushima
Arihara Koichi