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    • 6. 发明申请
    • OPTICAL DENSITY DETERMINATION METHODS AND APPARATUS
    • 光密度测定方法和装置
    • US20110149284A1
    • 2011-06-23
    • US12642562
    • 2009-12-18
    • Michael H. LeeDaihua ZhangOmer GilaWilliam D. Holland
    • Michael H. LeeDaihua ZhangOmer GilaWilliam D. Holland
    • G01N21/17
    • B41F33/0036
    • At least some aspects of the disclosure are directed towards densitometers and methods of determining optical density of printed images upon media. According to one example, an optical density determination apparatus includes a first light source configured to emit a first light beam in a first direction towards a substrate; a second light source configured to emit a second light beam in a second direction towards the substrate, the second direction being different than the first direction; a first sensor configured to sense light of the first light beam reflected from the substrate; a second sensor configured to sense light of the second light beam reflected from the substrate; and wherein the first and second sensors are configured to provide signals indicative of the light sensed by the first and second sensors and which are useable to determine optical density of the substrate.
    • 本公开的至少一些方面涉及密度计和确定介质上印刷图像的光密度的方法。 根据一个示例,光密度确定装置包括:第一光源,被配置为朝向基板朝第一方向发射第一光束; 第二光源,被配置为朝向所述衬底沿第二方向发射第二光束,所述第二方向不同于所述第一方向; 第一传感器,被配置为感测从所述基板反射的所述第一光束的光; 第二传感器,被配置为感测从所述基板反射的所述第二光束的光; 并且其中所述第一和第二传感器被配置为提供指示由所述第一和第二传感器感测的光的信号,并且其可用于确定所述基板的光密度。