Patent ID: 8042463

Claim:
A coating device in a stencil printing apparatus in which a printing drum unit whose outer peripheral face is wrapped with a prepared master can be detachably mounted on a printing apparatus main body, comprising: a coating unit that can be detachably mounted on said printing apparatus main body, in place of said printing drum unit, to form a coating in a given thickness of a viscous coating liquid onto a predetermined area of a surface of a printed sheet that is fed, wherein said coating unit comprises: a coating member to coat the surface of a printed sheet with a coating liquid, a supply device to form a liquid pool, where the coating liquid accumulates temporarily, on said coating member, and for supplying said coating liquid to form a coating in a predetermined thickness to the surface of said coating member, a holding member to hold a coating liquid storage container that contains said coating liquid, and a pump device to feed said coating liquid from said coating liquid storage container to said liquid pool, wherein said supply device comprises: supply range varying means for varying a coating liquid supply length in a sheet width direction that is perpendicular to a sheet transport direction; setting means for setting said coating liquid supply length for said supply range varying means; and first control means for controlling said supply range varying means in such a manner that a coating liquid supply length becomes said coating liquid supply length set by said setting means.