Patent ID: 11890886
Assignee: NORITZ CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 0:
1. A method of manufacturing an outer case for a hot water unit, the method comprising:
a pressing step of pressing a flat metal plate to form a component part of an outer case used to accommodate a hot water device for generating hot water or storing hot water inside; and
a painting step of painting one of text, symbols, figures or patterns on the component part of the outer case,
wherein the painting step includes an inkjet printing step of forming an inkjet printing layer by performing inkjet printing on the flat metal plate,
the pressing step is performed after the inkjet printing step, the pressing step includes a step of drawing the metal plate,
in the inkjet printing step, a thickness of a first portion of the inkjet printing layer in a portion of a planned region of drawing in which a thickness of the metal plate is thinner than that of other portions is set to be thinner than a thickness of a second portion of the inkjet printing layer of the other portions, and
after the pressing step, a clear coating step of forming a clear layer on the inkjet printing layer is further included.