发明授权
US07433075B2 Method and image forming apparatus, and printing system for recording invisible information recording 失效
方法和图像形成装置以及用于记录不可见信息记录的打印系统

Method and image forming apparatus, and printing system for recording invisible information recording
摘要:
Invisible information are recorded in the form of pixels invisible to the naked eye and at a print density invisible to the naked eye.
信息查询
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