Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

DROPLET SPATTER ELIMINATION IN A STITCHED INK JET PRINTER

IP.com Disclosure Number: IPCOM000025172D
Original Publication Date: 1983-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 111K

Publishing Venue

Xerox Disclosure Journal

Abstract

In the stitched, continuous stream-type ink jet printers, normal nozzle array geometry produces droplet spattering at the stitching line interface between adjacent droplets from two neighboring nozzles because of their simultaneous arrival at the paper and because of the required excessive overlap between the two stitched droplets necessitated to overcome system tolerances such as, for example, mechanical vibrations, stream directional jittering and deflection voltage drift.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 56% of the total text.

Page 1 of 2

KEROX DISCLOSURE JOURNAL I

DROPLET SPATTER ELIMINATION IN A STITCHED INK JET PRINTER Chein-Hwa S. Tsao

Proposed Classification 1J.S. Cl. 346/75
Int. Cl. Gold 15/18

307- -32 FIG. I

I I I I I ! I

I ,r-2 r-1 r r r-l r-21

Y

COLUMN TIME FIG. 2

Volume 8 Number 6 November/December 1983 49 1

[This page contains 1 picture or other non-text object]

Page 2 of 2

DROPLET SPATTER ELIMINATION IN A STITCHED INK JET PRINTER (Cont'd)

In the stitched, continuous stream-type ink jet printers, normal nozzle array geometry produces droplet spattering at the stitching line interface between adjacent droplets from two neighboring nozzles because of their simultaneous arrival at the paper and because of the required excessive overlap between the two stitched droplets necessitated to overcome system tolerances such as, for example, mechanical vibrations, stream directional jittering and deflection voltage drift.

By eliminating the factor of simultaneous droplet landing at the stitch line interface, ink spatter is substantially reduced and this is accomplished by the printhead assembly 10 shown in Figure 1. The assembly employs an ink jet array 12 having sagittally alternating nozzles 14. For clarity the charged electrode structure is not shown.

In such a design, the adjacent raster line segments 16 on paper 18, which moves in the direction of arrow 20, are parallel but skewed vertically on the real time basis, so that simultaneous landing by two neighboring droplets at the stitch line 28 from adjacent nozzles does not occur.

Each stream 22 of droplets sweep a line segment 16 comprising a linear series of contiguous pixels 24 in accordance with the induced charge placed on each droplet by the charge electrode (not shown) as they fly t...