Brother Kogyo Kabushiki-kaisha

Masutaro Katsu

Masahiko Suzuki

Shigeru Mizuno

Haruki Mizuno

Kozo Yabukami

A case member and a resilient supporting member are removably coupled to each other. The case member has a mounting portion mounted on a traveling member, which includes a carriage of a printing apparatus. The supporting member includes first and second portions which are formed integrally from a leaf spring material, and can be deformed elastically. A printing hammer, a bearing member supporting the hammer, a solenoid coil member for driving the hammer, a spring member used to return the hammer, a hammer socket receiving an impact from the hammer, and a shock absorbing rubber plate are coupled together and held between the case member and the supporting member. As the printing hammer moves to its return position, it abuts against the hammer socket, thereby moving it in a returning direction. Returning energy received from the hammer is transmitted to the first portion of the supporting member through the rubber plate, to be absorbed between the rubber plate and the supporting member, on the one side, and to the second portion of the supporting member, which is directly in contact with the hammer socket, on the other side.

Printing hammer device

A flux-path forming member of a motor is prepared from a mixture mass by evenly mixing up to 4% of a thermosetting resin binder and molybdenum disulfide with at least 96% of a metal powder, fibrous metal, or a combination thereof; a second step of compacting in a mold under pressure the mixture mass into a desired shape; and a third step of heating, concurrently with or subsequently to the second step, the mixture mass to an elevated temperature to cure the binder portion thereof. The compact prepared by the above process is also disclosed. The content of the thermosetting resin at least 0.2 percent by weight, and the content of the molybdenum disulfide is at least 0.1 percent by weight. The curing operation is conducted at a temperature not higher than 300.degree. C.

Growing community of inventors

Nagoya, Japan

Masutaro Katsu