{TAIL ~ Apparatus} for manufacturing electron source, {HEAD ~ method} for manufacturing electron source, and method for manufacturing image forming apparatus 
{ TAIL ~ Apparatus } for manufacturing electron source , { HEAD ~ method } for manufacturing electron source , and method for manufacturing image forming apparatus
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH