Print wheels and methods of using same
    5.
    发明授权
    Print wheels and methods of using same 失效
    打印轮子及其使用方法

    公开(公告)号:US5413422A

    公开(公告)日:1995-05-09

    申请号:US102601

    申请日:1993-08-05

    摘要: In a print wheel encoding scheme, signs such as reflector strips are arranged on an encoder ring along the print wheel petals. One strip is provided at each petal. The strips are grouped into groups of three or more petals. Each group starts with a reflective strip and terminates with a non-reflective strip, or vice versa. The strips are read by a single optical sensor to provide a reliable mechanism for reading the print wheel I.D., homing the print wheel and detecting print wheel error conditions such as jams or mispositioning.

    摘要翻译: 在打印轮编码方案中,诸如反光片的符号沿着印刷轮花瓣布置在编码器环上。 每个花瓣提供一条。 条被分成三个或更多个花瓣的组。 每组以反射条开始,并以非反射条终止,反之亦然。 条带由单个光学传感器读取以提供用于读取打印轮I.D的可靠机构,用于归位打印轮并检测打印轮错误状况,例如卡纸或错位。