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Browse Prior Art Database

Evaporation Control and Replenishment of Ink in an Ink Jet Printer

IP.com Disclosure Number: IPCOM000084596D
Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Clinton, WC: AUTHOR [+2]

Abstract

An enclosure 10 is provided which completely encloses the ink jet drop stream 11 as it moves from nozzle 12, past drop selector 13, drop deflector 14 into or past gutter 15. An opening 16 in the end of enclosure 10 allows nonselected ink drops of stream 11 to leave the enclosure 10 to deposit on a record medium 17, in accordance with a record pattern dependent on signals applied to the selector 13 and deflector 14.

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Evaporation Control and Replenishment of Ink in an Ink Jet Printer

An enclosure 10 is provided which completely encloses the ink jet drop stream 11 as it moves from nozzle 12, past drop selector 13, drop deflector 14 into or past gutter 15. An opening 16 in the end of enclosure 10 allows nonselected ink drops of stream 11 to leave the enclosure 10 to deposit on a record medium 17, in accordance with a record pattern dependent on signals applied to the selector 13 and deflector 14.

A liquid pool 18, e.g., water, is provided in the bottom of enclosure 10. A heating element 19 submersed in the pool 18 is operated to vaporize the liquid 18, so that the liquid jet stream 11 does not vaporize into the atmosphere within the enclosure 10. The temperature of the pool 18 could be selected to provide a vapor concentration within enclosure 10 such that vapor equilibrium exists, or vapor would condense onto the drops of ink stream 11, thus adding solvent to the ink.

The rate at which solvent is added is controlled by controlling the temperature of the pool 18. By this means the quality of the properties of the ink, e.g., magnetic moment in the case of a ferrofluid, can be closely controlled.

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