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

Claim 10:
11. 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 a second hydrophobic resin of which a storage elastic modulus G′ is 20 Pa or larger at a temperature at the time when the channel wall is formed, is allowed to exist in a region that becomes the channel, in the channel pattern, and
wherein the first hydrophobic resin and the second hydrophobic resin are melted to form the channel wall that is formed of the first hydrophobic resin in the inside of the porous substrate, and also to form the protection layer formed of the second hydrophobic resin so as to cover the channel.