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Gutter Temperature Control for Ink Jet Printers

IP.com Disclosure Number: IPCOM000053131D
Original Publication Date: 1981-Sep-01
Included in the Prior Art Database: 2005-Feb-12
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Beach, BL: AUTHOR [+2]

Abstract

In continuous stream ink jet printers it is conventional practice to catch unused ink droplets in a gutter and recirculate the ink back to the head for re-use. With continued recirculation the volatile products in the ink tend to evaporate in the gutter during machine operation, ultimately requiring either the addition of volatile products to the ink, or the replacement of the ink supply due to its increase in density.

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Gutter Temperature Control for Ink Jet Printers

In continuous stream ink jet printers it is conventional practice to catch unused ink droplets in a gutter and recirculate the ink back to the head for re-use. With continued recirculation the volatile products in the ink tend to evaporate in the gutter during machine operation, ultimately requiring either the addition of volatile products to the ink, or the replacement of the ink supply due to its increase in density.

In order to control the evaporation rate, the typical gutter 10 of a continuous stream ink jet printer may have attached thereto a thermoelectric device 11 which is provided with a suitable heat sink 12. The metal portion of the gutter 10 may be coated with silicone rubber to inhibit condensation, and with the thermoelectric device in operation, the gutter temperature may be lowered, decreasing the evaporation of the ink being caught by the gutter. Moreover, as a side benefit, some condensation of water vapor from atmospheric and higher temperature can occur depending upon the dew point at a particular relative humidity. The added water vapor helps to maintain the volatile material in the ink.

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