发明公开
EP0186750A3 Obstructed-field-indicia-sensing device 失效
阻塞场指示感测装置

Obstructed-field-indicia-sensing device
摘要:
A method and apparatus for detecting predetermined register indicia (12) on a moving web (10) of material having an obstructing field of indicia (18) positioned about the register indicia (12).
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