公开(公告)号：DE2962615D1

公开(公告)日：1982-06-09

申请号：DE2962615

申请日：1979-06-01

Applicant: IBM

Inventor： LAMMERS GERALD BERNARD ,  HOFFMAN ARTHUR ROWLAND

IPC: B41J2/085 ,  B41J2/09 ,  B41J3/04

Abstract: A charge electrode array for a multi-nozzle ink jet array is fabricated from alternate layers of stainless steel and epoxy resin. The charge electrode array may be formed by positioning stainless steel tabs in previously grooved nonconductive substrate such as ceramic. The grooves are spaced sufficiently apart to allow insulating material to be placed between each stainless steel tab. Alternatively, a stainless steel plate may be bonded to a nonconductive substrate. Then the stainless steel can be sliced so that insulating material can be placed between each stainless steel strip. Epoxy fills the gap between tabs or strips forming an insulating layer. An ink drop charging channel through each tab or strip is formed by drilling through the tips of the steel tabs or strips, or by cutting U-shaped channels through the tips of the tabs or strips.

公开(公告)号：DE2961900D1

公开(公告)日：1982-03-04

申请号：DE2961900

申请日：1979-10-29

Applicant: IBM

Inventor： FILLMORE GARY LEE ,  HOFFMAN ARTHUR ROWLAND ,  YOUNG THOMAS

IPC: B41J2/02 ,  B41J2/155 ,  B41J2/21 ,  B05B1/08

Abstract: The Figure shows an ink jet head 10 comprising a housing 12 having a cylindrical passage 20 containing a cylindrical tube 19 formed of piezo-electric material. A nozzle plate 49 is attached to the housing to register with a portion 46 of the housing wall of reduced thickness. Apertures 47 through the wall portion 46 register with nozzles 48 in the plate 49. The tube 19 is subject to an electric field established between an electrode formed internally of the tube and pressurized conductive ink in the passage 20. Longitudinal vibrations in the tube 19 are absorbed by resilient mountings 22, 23. When tube 19 is electrically excited pressure waves are set up in the ink in passage 20 and the ink jets issuing from nozzles 48 are caused to break-up into similar streams of ink drops. … In a modification the wall portion 46 is removed and the aperture so formed oovered by a flexible sheet diaphragm held against the housing by a manifold plate interposed between the none plate and the housing. The manifold plate has an open-sided recess registering with the housing wall aperture and communicating with the nozzles through an array of outlets through the bottom of the recess. In this modification the passage 20 is filled with liquid and ink is supplied under pressure to the manifold plate recess. Pressure waves established in the passage 20 are transmitted through the diaphragm in the ink in the manifold plate recess.

公开(公告)号：DE2965679D1

公开(公告)日：1983-07-21

申请号：DE2965679

申请日：1979-10-29

Applicant: IBM

Inventor： KRAUSE KONRAD ARTUR ,  FILLMORE GARY LEE ,  HOFFMAN ARTHUR ROWLAND ,  YOUNG THOMAS

IPC: B41J2/02 ,  B41J2/155 ,  B41J3/04

公开(公告)号：DE2853274A1

公开(公告)日：1979-07-05

申请号：DE2853274

申请日：1978-12-09

Applicant: IBM

Inventor： HOFFMAN ARTHUR ROWLAND

IPC: B41J2/02 ,  B41J2/135 ,  B41J2/16 ,  B41J3/04

Abstract: A multi-nozzle ink jet array has all of the nozzles arranged in a single plane with each of the nozzles having a longitudinal passage extending therethrough of the same diameter. The lengths of the longitudinal passages of the nozzles at each end of the array are shorter than those in the center of the array to cause an increased initial velocity of the ink jet streams flowing therefrom so as to compensate for aerodynamic drag on the end streams.