BAR CODE READING DEVICE METHOD OF PRODUCING MUTLILAYER PRINTED-WIRING BOARD CONTANING METAL CORE

摘要

A multi-layer printed wiring board is produced by forming a metal plate having a peripheral portion which is a non-product portion. A product portion is surrounded by the non-product portion, the peripheral portion and the product portion being partially connected. An insulation material is filled in non-connecting portions formed between the peripheral portion and the product portion. The metal plate is laminated with other inner layer plates to form a multilayer body. The peripheral portion is separated from the product portion within the regions in which the insulated material is filled. The metal plate is monolithically formed.