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THERMAL INK JET EFFLUENCE REMOVAL VIA CUSTOMER REPLACEABLE UNIT REPLACEMENT

IP.com Disclosure Number: IPCOM000027698D
Original Publication Date: 1998-Dec-31
Included in the Prior Art Database: 2004-Apr-08
Document File: 2 page(s) / 105K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is the removal of Thermal Ink Jet (TIJ) effluence (evaporated fluid) by a means of collecting it in a Customer Replaceable Unit (CRU). Thereafter, the CRU is replaced disposing of the waste effluence. Since there is a significant amount of effluence developed by TIJ printing onto a heated drum, a system must be developed to manage the effluence. The result of depositing effluence into the CRU is a clean, space efficient, low-cost solution to the problem of effluence management.

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XEROX DISCLOSURE JOURNAL

THERMAL INK JET EFFLUENCE REMOVAL VIA CUSTOMER REPLACEABLE UNIT REPLACEMENT Eric A. Merz
Brian S. Hilton
George Wittman

Proposed Classification
U. S. C1. 347/020 Int. C1. B41j 2/015

Disclosed is the removal of Thermal Ink Jet (TIJ) effluence (evaporated fluid) by a means of collecting it in a Customer Replaceable Unit (CRU). Thereafter, the CRU is replaced disposing of the waste effluence. Since there is a significant amount of effluence developed by TIJ printing onto a heated drum, a system must be developed to manage the effluence. The result of depositing effluence into the CRU is a clean, space efficient, low-cost solution to the problem of effluence management.

TIJ architecture requires that printing be supplied to a sheet of paper on a heated drum. The heated drum is used to dry the image. As a result of this heated drying, a signifcant amount of fluid including ink and the moisture content of the paper is evaporated from the sheet. This effluence causes several problems for a TIJ printing system.

The first problem that effluence causes is "rain". "Rain" occurs when the effluence condenses on cooler surfaces, and drips onto the printed image, causing a smear. The second problem is the release of chemicals in the effluence. The effluence may contain ink
ingredients, which would be undesirable to release into the environment. Excess effluence may also hamper the drying efficiency of the drum, due to a high humidity level.

Traditionally, effluence is gathered by condensing the vapor, and routing it to an evaporating tray. This method requires a large surface area to evaporate the liquid to the environment at a pace to match the production of the machine. The problems with an evaporating tray are that they require a large amount...