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Browse Prior Art Database

WATER SOLUBLE INK CAPSULES

IP.com Disclosure Number: IPCOM000027565D
Original Publication Date: 1997-Dec-31
Included in the Prior Art Database: 2004-Apr-08
Document File: 2 page(s) / 60K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a process for "white glove" replenishment of a thermal ink jet printer wherein the nonaqueous ink components are separated from the water and encapsulated in a water soluble shell. The ink is reconstituted in the machine sump by first adding a measured quantity of the capsules, followed by addition of the water. The capsules have the advantage of being much easier to handle than a conventional ink, and are less likely to contaminate other surfaces if accidentally spilled.

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XEROX DISCLOSURE JOURNAL

WATER SOLUBLE INK CAPSULES

Robert S. Karz Kamal G. Escalona Kurt B. Gundlach

Proposed Classification
U. S. C1. 106/020R Int. C1. C09d 11/00

Disclosed is a process for "white glove" replenishment of a thermal ink jet printer wherein the nonaqueous ink components are separated from the water and encapsulated in a water soluble shell. The ink is reconstituted in the machine sump by first adding a measured quantity of the capsules, followed by addition of the water. The capsules have the advantage of being much easier to handle than a conventional ink, and are less likely to contaminate other surfaces if accidentally spilled.

Water is common in an office environment, completely safe, much easier to handle than a liquid ink, and unlikely to cause either storage or environmental damage in the event of a spill.

Custom colors can also be prepared by this method simply by pre-mixing capsules of the primary colors in the correct proportions either before packaging (in the event that a custom color is prepared for a specific customer) or before admixing with water (in the event that the customer desires to prepare a custom color on-site).

The water soluble shell is prepared from any desired or suitable polymer. For example, polymeric materials having water soluble ionic substituents can be employed, such as VERSA TL-4, which has water soluble sulfonate substituents; other examples include polycarbonate resins containing carboxylate substituents.

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