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INK DISPOSAL SYSTEM FOR AN INK JET PRINTHEAD

IP.com Disclosure Number: IPCOM000027086D
Original Publication Date: 1995-Apr-30
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 91K

Publishing Venue

Xerox Disclosure Journal

Abstract

Proposed is an ink disposal system for an ink jet printhead that times a maintenance cycle to coincide with the interdocument zone existing between sheets of the recording medium. Ink droplets impinge a porous roll and are removed to a waste sump by a vacuum or other means.

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XEROX DISCLOSURE JOURNAL

INK DISPOSAL SYSTEM FOR AN INK JET PRINTHEAD U.S. C1.3461075 Raymond A. Povio

Proposed Classification

lit. C1. Gold 15/18

XEROX DISCLOSURE JOURNAL - Vol. 20, No. 2 MarchlApril 1995 1%

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INK DISPOSAL SYSTEM FOR AN INK JET PRINTHEAD (Cont'd)

Proposed is an ink disposal system for an ink jet printhead that times a maintenance cycle to coincide with the interdocument zone existing between sheets of the recording medium. Ink droplets impinge a porous roll and are removed to a waste sump by a vacuum or other means.

As schematically illustrated in the Figure, ink disposal system 10 uses a rotating, open cell foam roll 28. Foam roll 28 is coupled to a motor 30 and driven clockwise as indicated by arrow 32. The recording medium, such as, for example, paper (not shown) moves in the direction of arrow 21 on a transport 20 that may enclose the waste removal station. A plurality of thermal ink jet printheads 22 eject ink droplets, on demand, in the direction depicted by arrow
26. In the printing mode, the ink droplets strike the recording medium. To enable priming of the lesser used nozzles, printheads 22 may fire nozzle- clearing droplets to prevent them from drying out. The nozzle-clearing droplets are fired during a maintenance cycle or idle time when the printer is not being used. The specific idle time coincides with the interdocument zone existing between sheets of the recording m...