| 摘要 |
PURPOSE:To achieve high density, high resolution, high reliability, and improvement of productivity, by a method wherein a linear column state pattern is formed by using a conductive magnetic material of a specific thickness or above, and an insulating resist is applied to the electrode pattern and between the electrode patterns. CONSTITUTION:A junction layer 2 of a silver solder layer of 5mum in thickness is formed by a screen process printing on a side surface of an insulating alumina substrate 3. Then, a Fe-Ni alloy sheet of 40mum or above in thickness as a conductive magnetic sheet 5 is lined on the junction layer 2, and the alumina substrate and the Fe-Ni alloy sheet are joined by heating. Thereafter, linear cutting is performed by a cut depth of 125mum to form an electrode pattern 1. Since an area where an edge part of the electrode pattern is brought into contact with toner is increased, a formed image becomes extremely clear. Successively a space between the electrode patterns 1 is filled and the electrode pattern 1 is coated with polyimide resin as an insulating resist 4. No short circuit between the electrodes via the toner occurs, and a clear image is formed. |
