Patent ID: 6444379
Filing Date: 2002-09-03
Classification: G03G,H05K

Abstract:
A method for preparing a printed wiring board which comprises:preparing a material to be developed by making a through hole(s) to a laminated board in which first metal conductive layers are provided on both surfaces of an insulating substrate, subjecting the laminated board to metal plating treatment to provide second metal conductive layers at the inside of the through hole(s) and on the surface of the laminated board, and forming photoconductive layers on the second metal conductive layers, placing the material to be developed having at least a metal conductive layer and a photoconductive layer on both surfaces of an insulating substrate in this order on a platen to apply thereto alignment and static charge, wherein alignment of the statically charged material to be developed is carried out by measuring surface potentials of the through hole and near to the through hole, then exposing one of the photoconductive layer of the material to be developed to provide an electrostatic latent image, reversing the material to be developed to apply thereto alignment and static charge again, exposing the photoconductive layer surface which is the opposite surface of the electrostatic latent image-formed surface of the material to be developed to form an electrostatic latent image, and subjecting to toner developing treatment.