Ultrasonically assisted optical media sensor system
    2.
    发明授权
    Ultrasonically assisted optical media sensor system 失效
    超声波辅助光学传感器系统

    公开(公告)号:US06795191B2

    公开(公告)日:2004-09-21

    申请号:US10038983

    申请日:2002-01-04

    IPC分类号: G01N2916

    CPC分类号: B41J11/0095 B41J11/009

    摘要: A print media sensor (10) according to the present invention determines a print medium type by utilizing an ultrasonic transducer (22) to vibrate a print medium (28) at a resonant frequency of the print medium (28). The print medium (28) is irradiated with light from an LED (20). Sensors (24, 26) measure the amount of light reflected from and transmitted through the print medium (28) while it is being vibrated at the resonant frequency. The ratio of the reflected to transmitted light is compared to a stored table of ratios that are associated with the resonant frequencies of specific print medium types and print medium ink volume and application rates. The results of these comparisons are used to determine the print medium type and the associated ink volume and application rate to be used for printing on the print medium (28).

    摘要翻译: 根据本发明的打印介质传感器(10)通过利用超声波换能器(22)以打印介质(28)的共振频率振动打印介质(28)来确定打印介质类型。 用来自LED(20)的光照射打印介质(28)。 传感器(24,26)在以共振频率振动时测量从打印介质(28)反射和透射的光的量。 将反射光和透射光的比率与与特定打印介质类型的共振频率和打印介质墨水量和施加率相关联的比率的存储表进行比较。 这些比较的结果用于确定打印介质类型以及用于在打印介质(28)上打印的相关墨水量和应用速率。