Marking determining method and marking determining apparatus

Details Marking determining method and marking determining apparatus Marking determining method and marking determining apparatus

2006-10-24

2006-10-24

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

C250S339140, C250S559440

Reexamination Certificate

active

07126124

ABSTRACT:
The present invention realizes accurate determination on marking without using an infrared sensor having high responsiveness and high precision. An infrared sensor is disposed such that a region of a predetermined range on the downstream side in the feed direction of an X-ray film with respect to a scan line, the region including the scan line as a laser beam irradiation position, becomes a detection region. Not only an infrared ray emitted from the laser beam irradiation position but also infrared rays emitted from a plurality of dots formed on the X-ray film irradiated with a laser beam can be also detected by the infrared sensor. Consequently, an output from the infrared sensor is stabilized and by comparing the output with a threshold, occurrence of erroneous printing, poor printing, and the like can be accurately detected.

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Machine Assisted Translation of Japanese Publication 10-350377, published Nov. 17, 1998.
Machine Assisted Translation of Japanese Publication 10-305377, published Nov. 17, 1998 (included with last Office action).

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