Indicator for Confirming Data Erasure, Box for Use in Processing Recording Media, and Method for Erasing Data
OwnerTomoaki Itoinventor
Life of this patent
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Abstract
There is provided with an indicator 1 for confirming data erasure to be placed in a magnetic field with a recording medium in placing the recording medium in the magnetic field so as to erase data recorded in the medium, including a displaying part 2 whose displaying status changes upon being placed in a magnetic field of a predetermined strength or more. The indicator 1 mainly consists of a transparent film layer 5, a core layer 6, and a magnetic body layer 7, which are adhesively bonded. The core layer 6 has a cavity 11 encapsulating magnetic particles 12. The magnetic particles 12 freely move within the cavity 11.
Claims22
An indicator for confirming data erasure to be placed in a magnetic field with a recording medium in placing the recording medium in the magnetic field so as to erase data recorded in the medium, comprising a displaying part,
- wherein the displaying part causes its displaying status to change upon being placed in a magnetic field of a predetermined strength or more.
Dependencies are inferred from the claim text.