公开(公告)号：DE3278761D1

公开(公告)日：1988-08-18

申请号：DE3278761

申请日：1982-11-23

Applicant: IBM

Inventor： HUMPHREYS FRANK R ,  REX DONALD K

IPC: B41J2/255 ,  B41J2/515 ,  B41J3/54 ,  G06K15/10 ,  B41J3/02

公开(公告)号：CA1191390A

公开(公告)日：1985-08-06

申请号：CA417174

申请日：1982-12-07

Applicant: IBM

Inventor： HUMPHREYS FRANK R ,  REX DONALD K

IPC: B41J2/255 ,  B41J2/515 ,  B41J3/54 ,  G06K15/10 ,  B41J1/18

Abstract: SELECTIVE DENSITY PRINTING USING DOT MATRIX PRINT HEADS IN FIXED SPATIAL RELATION Alternate print heads are misaligned to invoke counterpart density printing by selected heads overstriking a character with misaligned dots falling between previously printed dots to increase print density.