To prevent printing defects and spoilage from occurring while preventing the generation of wear and damage in the process between a cam and a cam-follower.

An lubricating device 15 of the cam-follower comprises a brush 17 to feed grease to the cam-follower and a holder 16 to support the brush 17.The holder 16 is integrally formed of a ceiling part 18 to support a base-end part 17a of the brush 17, a surrounding part 19 to surround the base-end part 17a side of the brush 17, and an opening 20 to project a free-end part 17b of the brush 17. The grease which is fed to a non-penetrating hole 22 of the holder 16 and which is held by the brush 17 through a communicating hole 23 is fed to the circumferential part of the cam-follower abutted on the free-end part 17b of the brush 17.