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