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