公开(公告)号：DE2528667A1

公开(公告)日：1976-01-22

申请号：DE2528667

申请日：1975-06-27

Applicant: IBM

Inventor： DILL FREDERICK HAYES ,  FAN GEORGE JEE ,  TOUPIN RICHARD ANTONIO

IPC: B41J2/13 ,  B41J2/10 ,  B41J2/155 ,  G06K15/10 ,  B41J3/04

公开(公告)号：DE2340120A1

公开(公告)日：1974-03-14

申请号：DE2340120

申请日：1973-08-08

Applicant: IBM

Inventor： FAN GEORGE JEE ,  TOUPIN RICHARD ANTONIO

IPC: B41J2/075 ,  B41J2/10 ,  G01D15/12 ,  G06K15/10 ,  H04N1/034 ,  H04N1/23 ,  B41J3/14

Abstract: An ink jet recording system including means for producing a stream of high speed ferrofluid ink droplets, magnetic deflection means for deflecting said ink stream, said magnetic deflecting means including two spaced pole pieces forming an air gap therebetween located so that said ink stream passes therethrough, said gap being shaped to form a gradient magnetic field therein, said gap further being shaped so that movement of said ink stream in a direction normal to the gradient magnetic field does not result in the ink stream striking a pole piece. Said system is further characterized by a plurality of magnetic deflection means located in the path of said ink stream wherein each deflecting means is capable of applying an increment of deflecting force to said stream.