The above mentioned constitution and {HEAD ~ basic operations} of {TAIL ~ the ADF} 2 have been disclosed in the specification of Japanese Patent Application No 276388/1991 filed by the present applicant on Sep. 30, 1991 
of
The above mentioned constitution and { HEAD ~ basic operations } of { TAIL ~ the ADF } 2 have been disclosed in the specification of Japanese Patent Application No 276388/1991 filed by the present applicant on Sep. 30 , 1991
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH