Toyota Jidosha Kabushiki Kaisha

Brother Kogyo Kabushiki-kaisha

Yuji Kawahara

Hiroshi Takahashi

Kei Yamamoto

Yasutomo Kato

Norihisa Hotta

Kenichiro Maeda

Chihiro Miyai

Yoshiyuki Karube

Display screen with graphical user interface

A guide shaft guides a print head, which moves along a print line of a platen to perform a printing operation. A rotating member and an eccentric cam member, having a toothed sector portion on its periphery, are mounted on the guide shaft. The guide shaft is guided on a frame by a bearing slot, so as to be movable toward and away from the platen. The eccentric cam member rotates as it is always spring-urged to engage a fixed engaging pin. As a result, the guide shaft moves in a direction transverse to its axis, thus changing a gap between the print head and the platen. As the eccentric cam member rotates in one direction, the print head moves away from the platen, in a retreat stroke. In a rear half of the retreat stroke, the toothed sector portion of the rotating member engages a toothed arm, which is connected to a paper bail member for holding a printing medium down on the platen. Thus, as the gap between the print head and the platen is widened, the paper bail member moves from a medium hold position and a release position off the platen.

Printing device

Growing community of inventors

Nagoya, Japan

Yuji Kawahara