Abstract: The present disclosure provides a method for producing a microchannel device, which can form a channel that has high hydrophobicity, high solvent resistance as well, and also resistance to heat and damage, on demand with high accuracy, and produces the microchannel device at a low cost, while having high productivity. The method for producing a microchannel device includes: forming a channel pattern from a hydrophobic resin on a porous substrate by an electrophotographic method; melting the channel pattern by heat to allow the channel pattern to permeate into the porous substrate, thereby forming a channel in the inside of the porous substrate.

Abstract: A voltage multiplier circuit assembly circuit is fabricated by the use of an apparatus which comprises a pair of guide walls juxtaposed on a horizontal insulative support, each of the guide walls having first and second slits in opposed relation to the corresponding slits in the other. The guide walls define a first and a second area and an intermediate area therebetween. Condensers of the wafer type is placed alternately on the first and second areas with one of their electrodes facing downward. Diodes having a pair of connecting leads are placed on the intermediate area alternately with the condensers and alternately through the first and second opposed slits. Conductive cementing agent is applied between the contact points of the condensers and diodes.