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Use of Magnetic Field Gradient to Obtain Improved Ink Drying Times for Magnetic Ink Jet Printers

IP.com Disclosure Number: IPCOM000081255D
Original Publication Date: 1974-Apr-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Leslie, G: AUTHOR [+3]

Abstract

When printing occurs by subjecting paper to a jet stream of ink particles, it is desirable to shorten the time for drying such ink particles so that the printing on the paper does not smear.

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Use of Magnetic Field Gradient to Obtain Improved Ink Drying Times for Magnetic Ink Jet Printers

When printing occurs by subjecting paper to a jet stream of ink particles, it is desirable to shorten the time for drying such ink particles so that the printing on the paper does not smear.

In order to improve such initial smear resistance, it is necessary to enhance the paper-ink interaction time, that is, urge the ink into the paper with sufficient force so that the ink is pulled into the paper quickly, lowering the drying time of the ink. Such lowering of the drying time is accomplished by employing a magnet located opposite to the side of the paper on which printing occurs, to apply a magnetic field gradient perpendicular to the plane of the paper during printing. Such gradient is applied over a broad area of the paper in such a manner, that its perpendicular component is used to assist in enhancing the paper-ink interaction time.

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