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Ink Jet Sight Gage

IP.com Disclosure Number: IPCOM000048947D
Original Publication Date: 1982-Apr-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Driscoll, PR: AUTHOR [+2]

Abstract

Previous attempts to aim single ink jet streams were inaccurate due to visual perception problems and guess work. The black ink stream is so small as to be almost invisible especially against a dark background. Seeing where the stream landed in a black pocket or gutter was at best guess work even with good lighting. Attempting to aim, even with back lighting and white background, often results in error.

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Ink Jet Sight Gage

Previous attempts to aim single ink jet streams were inaccurate due to visual perception problems and guess work. The black ink stream is so small as to be almost invisible especially against a dark background. Seeing where the stream landed in a black pocket or gutter was at best guess work even with good lighting. Attempting to aim, even with back lighting and white background, often results in error.

The collector 3 is molded or machined to be bonded together at the pocket 5 so that the dimension from either one side or the other is very accurate. Therefore, the ink jet sight gage 7 can be designed to locate the angled surface 9 very accurately in relation to pocket 5. With a suitable finish on the angled surface the ink stream 11 will create a mark 13 as the stream moves onto the surface which disappears as the stream moves away, due to the cohesiveness of the ink. Even if the gage is slid into position with the stream running, when the stream is backed away, the complete mark will recede toward the bottom of the angled surface 9 due to the cohesiveness of the ink.

The accuracy of this device 3 is in the visibility of a mark which changes only a small fraction of the total distance from the bottom of the angled surface 9 to the top.

Even if the ink stream 11 squirting from nozzle 15 strikes the top of the gage on initial start-up or insertion, it can be moved off onto the angled surface and the ink rinsed off with clean distilled water. The...