公开(公告)号：US3513938A

公开(公告)日：1970-05-26

申请号：US3513938D

申请日：1969-06-02

Applicant: IBM

Inventor： BUEHNER WILLIAM L ,  GREER DONALD L ,  MCCORNACK RICHARD W ,  O'BRIAN PAUL L ,  SIMPSON HENRY W

IPC: B41J13/00 ,  B41J29/08 ,  G10K11/16 ,  F01N1/02 ,  H04L15/24

CPC classification number: G10K11/16 ,  B41J29/08

公开(公告)号：CA906423A

公开(公告)日：1972-08-01

申请号：CA906423D

Applicant: IBM

Inventor： SIMPSON HENRY W ,  GREER DONALD L ,  BUEHNER WILLIAM L ,  MCCORNACK RICHARD W ,  O'BRIAN PAUL L

IPC: B41J29/08 ,  G10K11/16

公开(公告)号：CA1115326A

公开(公告)日：1981-12-29

申请号：CA335821

申请日：1979-09-18

Applicant: IBM

Inventor： BUEHNER WILLIAM L ,  HILL JAMES D

IPC: B41J2/07 ,  B41J2/485 ,  B41J2/505 ,  G06K15/10 ,  G01D15/18

Abstract: MULTIPLE SPEED INK JET PRINTER Disclosed is a multi speed ink jet printer in which alternate vertical scans of the ink stream may be omitted or alternate dots horizontally may be omitted or a combination of the two. In the alternate vertical scan omit mode, a factor of two increase in the speed of printing may be obtained, the same being true of a horizontal row dot omission. Moreover, a combination of the two permits up to a four times speed increase. In essence, while the rate of the ink stream remains constant, the predetermined maximum number of dots (picture elements) in a character box is decreased (resolution decreased) to permit an increase in the speed of printing.