Patent ID: 11970390
Assignee: CANON KABUSHIKI KAISHA
Field: Micro-structural and nano-technology (Chemistry)
Classification: CPC B | IPC B

Claim 8:
9. A method for producing a microchannel device that has a channel sandwiched between channel walls formed in an inside of a porous substrate, comprising:
placing a first hydrophobic resin on a surface of the porous substrate by an electrophotographic method to form a channel pattern on the surface of the porous substrate; and
melting the first hydrophobic resin by heat to allow the first hydrophobic resin to permeate into the inside of the porous substrate, thereby forming a channel wall in the inside of the porous substrate,
wherein a protection layer is formed so as to cover the channel or close a surface side of the channel, on the surface of the porous substrate,
wherein the first hydrophobic resin is allowed to exist in both of a region that becomes the channel wall and a region that becomes the channel, in the channel pattern, and an amount of the first hydrophobic resin in the region that becomes the channel wall is controlled so as to be larger than an amount of the first hydrophobic resin in the region that becomes the channel, and
wherein the first hydrophobic resin is melted to form the channel wall in the inside of the porous substrate, and also to form the protection layer so as to cover the surface side of the channel.