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Magnetic wire and recording medium

A recording medium and magnetic wire technology, applied in magnetic recording, electrical recording, data recording, etc., can solve the problems of weak magnetic signal, detection by non-contact reading system, etc.

Active Publication Date: 2008-10-22
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the magnetic signal emanating from paper using small diameter strong magnetic filaments is so weak that the presence of the paper cannot be detected with a non-contact type reading system

Method used

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Embodiment 2

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Abstract

The invention provides a magnetic wire and a recording medium. The magnetic wire includes a magnetic metal wire material having a surface coated with a layer of an insulating material. The magnetic wire has a magnetic coercive force of 30 A / m or less and has a Barkhausen effect.

Description

Magnetic wire and recording media technical field The present invention relates to a magnetic wire contained in a recording medium which can be used to form an image by an electrophotographic system, etc., and a recording medium using the magnetic wire, the magnetic wire enabling detection by a non-contact type magnetic signal detector to the existence of the recording medium. Background technique So far, for the purpose of preventing forgery, secrecy of highly classified information, etc., various papers and parts containing magnetic materials have been researched. As a magnetic material used in paper and parts for this purpose, for example, magnetic fibers produced by fixing magnetic powder on the surface of a fibrous substance are known (see Japanese Patent Application Laid-Open No. 11-107161 and Japanese Patent Laid-Open No. 2004 - Bulletin No. 131888). When the magnetic sensor is brought close to the paper containing the magnetic fibers, the magnetization pattern c...

Claims

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Application Information

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IPC IPC(8): G03G7/00D21H27/00D21H21/48
CPCY10T428/31993G11B5/642Y10T428/32
Inventor 布施真理雄山口昭治松田司栗原英三黄田保宪高桥邦广
Owner FUJIFILM BUSINESS INNOVATION CORP
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