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