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