Browse Prior Art Database

Reclaiming Agglomerated Magnetic Inks

IP.com Disclosure Number: IPCOM000086801D
Original Publication Date: 1976-Oct-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Anschel, M: AUTHOR [+2]

Abstract

One of the requirements for the production of successful magnetic ink is a process which does not allow the formation of agglomerates.

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Reclaiming Agglomerated Magnetic Inks

One of the requirements for the production of successful magnetic ink is a process which does not allow the formation of agglomerates.

The ease with which an ink can agglomerate has been investigated through magnetic measurements and has been correlated with phase contrast microscopy.

A continuation of these measurements has shown that inks in a robot produced nonagglomerating inks from heretofore failed agglomerating inks.

It appears that filtration and the efficient blending attained at high shear rates in the nozzle are responsible for elimination of agglomerates in magnetic inks.

The proposed final step in the large-scale manufacture of magnetic inks requires that the finished magnetic ink be repetitively cycled through a sequential filtering system followed by a rapid flow through a SONOLATOR*. The filtering system is comprised of four sequential filters as follows: (1) a pump filter, 4 microns, (2) a stainless steel filter, 0.8 microns, (3) a stainless steel filter, 0.8 microns, and (4) a sintered stainless steel filter, 10 microns. * Trademark of Sonic Corporation.

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