A gain adjustment device adjusts a gain of at least one other of {HEAD ~ a plurality} of {TAIL ~ color component signals} of the composite signal 
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A gain adjustment device adjusts a gain of at least one other of { HEAD ~ a plurality } of { TAIL ~ color component signals } of the composite signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH