A printing system that includes a transparency film detector having a light source for illuminating a sheet of input media and a detector for detecting whether a portion of {HEAD ~ the light} provided by {TAIL ~ the light source} propagated by internal reflection within the volume of the illuminated input media sheet is detected 
A printing system that includes a transparency film detector having a light source for illuminating a sheet of input media and a detector for detecting whether a portion of { HEAD ~ the light } provided by { TAIL ~ the light source } propagated by internal reflection within the volume of the illuminated input media sheet is detected
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