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