公开(公告)号：CA974569A

公开(公告)日：1975-09-16

申请号：CA167870

申请日：1973-03-30

Applicant: IBM

Inventor： LEE CHEN-HSIUNG ,  LOMINAC HAROLD R ,  ROSS CHARLES O ,  WOLFE BRUCE A

IPC: B41J2/075 ,  G06K15/10 ,  H04N1/23

Abstract: 1403276 Printers INTERNATIONAL BUSINESS MACHINES CORP 12 Feb 1973 [6 April 1972] 6757/73 Heading G4H [Also in Division B6] An ink droplet printer comprises droplet generation means 25, droplet deflection means 32, 33 and droplet charging means in the form of a plurality of charging elements 35 spaced along the path of travel of a droplet, selection of a charging element governing the position at which the droplet strikes a record medium 27. The charging elements 35 are supplied from a constant voltage source V 1 under control of shift registers 40-42 responsive to data input lines 43-45 and single shots 49-51 controlling phase synchronism. A phase maintenance system 47 responsive to a drop formation oscillator 29, drop charging pulses and phase sample pulses, for example one for each line printed, includes a logic box (54, Fig. 3, not shown) and controls the single shots 49-51.