Browse Prior Art Database

Air Bubble Removing Inner Chamber

IP.com Disclosure Number: IPCOM000087442D
Original Publication Date: 1977-Jan-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 22K

Publishing Venue

IBM

Related People

Lee, CH: AUTHOR

Abstract

An ink jet printing head is shown which includes means for removing small air bubbles from the interior of the head.

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Air Bubble Removing Inner Chamber

An ink jet printing head is shown which includes means for removing small air bubbles from the interior of the head.

The ink jet head 10 includes an inner chamber 12 which is made of some porous material. A vacuum line 14 is connected to the outside of inner chamber 12 and the ink supply line 16 is connected to the inside of inner chamber 12. At startup, the vacuum line 14 is opened and the ink, together with any air bubble, is sucked out. The vacuum line is closed for normal operation and any remaining or future small bubbles will be absorbed into the porous lining and will not affect normal operation of the head.

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