公开(公告)号：US4943173A

公开(公告)日：1990-07-24

申请号：US401513

申请日：1989-08-31

申请人： Yoji Okazaki ,  Yukami Nitta ,  Shigeyoshi Harada

发明人： Yoji Okazaki ,  Yukami Nitta ,  Shigeyoshi Harada

IPC分类号： B41J29/10

CPC分类号： B41J29/10

摘要： A printer has a feeding path for guiding a printing paper from and toward an opening of the printer. A cross-sectional shape of the feeding path is minimized to be sufficient to pass the printing paper through the feeding path. At least one resonator is arranged in the feeding path. The resonator has a case defining a resonant chamber and holes formed on the case along with the feeding path. The resonant chamber communicates with the feeding path through the holes. Noises such as impact sound generated by a printing head of the printer are silenced by the resonator at frequencies around a resonance fequency of the resonator, and further silenced by the area reduced portion of the feeding path.

摘要翻译： 打印机具有用于从打印机的开口引导打印纸的进给路径。 馈送路径的横截面形状被最小化以足以使打印纸通过馈送路径。 至少一个谐振器布置在馈送路径中。 谐振器具有限定谐振室的壳体和与馈送路径一起形成在壳体上的孔。 谐振室通过孔与进给路径连通。 由谐振器在谐振器的谐振频率周围的频率使由打印机的打印头产生的冲击声的噪声静音，并进一步被馈送路径的区域缩小部分静音。