| 摘要 |
PURPOSE:To enable to easily perform a positioning for magneto-resistance ele- ment patterns with high precision and to mass-produce magneto-resistance elements for encorder by a method wherein marks for positioning are used for the magneto-resistance element patterns formed on a transparent glass substrate. CONSTITUTION:Magneto-resistance element pattens 3 are formed on a transparent glass substrate 2 and a magneto-resistance element 4 with the substrate 2, whereon the patterns 3 have been formed, is formed on a ceramic or glass epoxy substrate 1. A metal thin plate 7 for positioning having a mark part (c) for positioning is used for the patterns 3 on the substrate 2. The metal thin plate 7 is formed in such a way that two sides A and B thereof can be accurately set at their corresponding positions to the mark part (c) for positioning. The metal thin plate 7 is adhered on the substrate 1 with a bonding agent 5 in such a way that the two sides A and B of the metal thin plate 7 are made to slightly protrude to the outside than two sides of the substrate 1 corresponding to the sides A and B. By such a constitution, a positioning of the resistance element 4 can be performed with high precision and the resistance elements 4 can be mass-produced. |
