Title:
ALIGNING APPARATUS FOR INK JET CARTRIDGE
Document Type and Number:
Japanese Patent JPH071726
Kind Code:
A
Abstract:
PURPOSE: To precisely position an image by correcting the flight delay time of the liquid drops of ink from an ink jet printhead.
CONSTITUTION: A carriage position encoder 310 scans a printhead at a first speed along a first axis and a sample pulse generator circuit 308 forms a test pattern on a medium as the printhead is scanned along the first axis in response to an ink jet timing signal for discharging liquid drops to a medium by the printhead. Further, a sensor means 200 detects a test pattern optically and obtains a phase signal depending on a flight time corresponding to the test pattern. A processor means 306 obtains an ink jet timing signal corrected in the flight delay time at a first speed in response to a phase signal.
Inventors:
ROBAATO DABURIYUU BIYUUCHIYANP
POORU RANDAARU SORENSON
KEISU II KOBUSU
POORU RANDAARU SORENSON
KEISU II KOBUSU
Application Number:
JP10337394A
Publication Date:
January 06, 1995
Filing Date:
April 18, 1994
Export Citation:
Assignee:
HEWLETT PACKARD CO
International Classes:
B41J2/05; B41J2/07; B41J2/125; B41J2/01; B41J2/21; B41J11/46; B41J19/18; B41J29/46; (IPC1-7): B41J2/01; B41J2/21; B41J2/125
Attorney, Agent or Firm:
Endo Kyo
Next Patent: DRIVING CIRCUIT OF PIEZOELECTRIC INK JETTING HEAD