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1. (WO2018016200) DRUM FOR MAGNETIC ENCODER AND ABSOLUTE ENCODER PROVIDED WITH SAID DRUM

Pub. No.:    WO/2018/016200    International Application No.:    PCT/JP2017/020563
Publication Date: Fri Jan 26 00:59:59 CET 2018 International Filing Date: Sat Jun 03 01:59:59 CEST 2017
IPC: G01D 5/245
Applicants: WAKO SEIKI CO., LTD.
和光精機株式会社
Inventors: Saito Masahiro
齋藤 正弘
Saito Kazuhiro
齋藤 和弘
Saito Daisuke
齋藤 大介
Title: DRUM FOR MAGNETIC ENCODER AND ABSOLUTE ENCODER PROVIDED WITH SAID DRUM
Abstract:
A magnetic layer of a drum for a magnetic encoder is disposed such that the entire outer circumferential surface side thereof only has one pole (N or S). More specifically, when, for example, a magnetic sheet that is magnetized on both sides is affixed to a drum, the magnetic sheet is affixed such that the entire outer circumferential surface side of the sheet has one pole. As a result, provided are a drum for a compact and extremely durable magnetic encoder and an absolute encoder provided with the drum.