An electrostatic copier having {HEAD ~ a control system} wherein {TAIL ~ switches} are used to detect conditions that would lead to paper jams 
wherein
An electrostatic copier having { HEAD ~ a control system } wherein { TAIL ~ switches } are used to detect conditions that would lead to paper jams
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH