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Invention Grant
US08405696B2 Printing sheet reusability determination device, erasing device, image forming device, and printing sheet reusability determination method 有权
打印纸重复使用性判定装置，擦除装置，图像形成装置以及打印纸重复使用性判定方法

Printing sheet reusability determination device, erasing device, image forming device, and printing sheet reusability determination method
Abstract:
A printing sheet reusability determination device includes a sheet carrying path that carries a second state sheet obtained by erasing an erasable image from a first state sheet on which the erasable image is printed, an imaging portion that images the second state sheet on the sheet carrying path, an illumination portion that illuminates the second state sheet on the sheet carrying path at a first irradiation angle when images remaining on the second state sheet are photographed, and at a second irradiation angle smaller than the first irradiation angle when a projected image generated by illuminating the second state sheet is photographed, an irradiation angle changing portion that changes the first irradiation angle and the second irradiation angle, and a reusability determination portion that determines whether or not to reuse the second state sheet based on imaging information obtained by the imaging of the imaging portion at the first irradiation angle and determines whether or not to reuse the second state sheet based on imaging information obtained by the imaging of the imaging portion at the second irradiation angle.
Abstract(Chinese):

一种打印纸可再利用性确定装置，包括：纸张承载路径，其承载通过从其上印刷有可擦除图像的第一状态纸上擦除可擦除图像而获得的第二状态纸;成像部，其将第二状态纸图像在纸张传送路径上 照射部，当拍摄残留在第二状态片材上的图像时，以第一照射角度照射片材传送路径上的第二状态片材，并且当通过照射产生的投影图像以比第一照射角度小的第二照射角度照射第二状态片材 拍摄第二状态纸，改变第一照射角度和第二照射角度的照射角度变化部分，以及根据通过摄影的摄像信息决定是否重新使用第二状态片材的再利用性判定部 成像部分，并且确定是否是n 基于通过以第二照射角度对成像部分的成像获得的成像信息来重新使用第二状态表。

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