Method for manufacturing a thermal head
    81.
    发明授权
    Method for manufacturing a thermal head 失效
    制造热头的方法

    公开(公告)号:US5054190A

    公开(公告)日:1991-10-08

    申请号:US623087

    申请日:1990-12-06

    IPC分类号: B41J2/335 B41J2/345

    摘要: A substantially rectangular insulating substrate is prepared. Next, pairs of lead electrodes are formed on the substrate such that they extend in parallel with regular intervals and slantwise with reference to the longitudinal direction of the substrate. The electrodes are formed by use of a lithography technology, including deposition and etching. Then, a resistor material is pasted on the substrate and the electrodes by screen printing, to thereby form a strip-shaped resistor extending in the longitudinal direction. Finally, a protective layer is formed on the resultant structure, so as to prevent the resistor and the electrodes from being oxidized or worn away, thereby completing the fabrication of a thermal head. In this thermal head, each of those portions of the strip-shaped resistor which are defined by a pair of adjacent lead electrodes serves as a parallelogrammatic heating resistor used for recording one pixel.

    Gas sensor
    84.
    发明授权
    Gas sensor 失效
    气体传感器

    公开(公告)号:US4660407A

    公开(公告)日:1987-04-28

    申请号:US762385

    申请日:1985-08-05

    IPC分类号: G01N27/12

    CPC分类号: G01N27/12

    摘要: A gas sensor has a ceramic substrate carrying a first ceramic layer formed thereon and a second ceramic layer formed on the first layer, the two layers having successive setbacks from one edge of the substrate so as to form a staircase-like edge structure, and a gas-sensitive layer is formed on the staircase-like edge portion of said substrate, height of said gas-sensitive layer above the substrate being less than the thickness of the first ceramic layer.

    摘要翻译: 气体传感器具有承载在其上形成的第一陶瓷层的陶瓷基板和形成在第一层上的第二陶瓷层,所述两层从基板的一个边缘连续挫折以形成阶梯状边缘结构,并且 气敏层形成在所述基板的阶梯状边缘部分上,所述气敏层在基板上方的高度小于第一陶瓷层的厚度。