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Aspirated Ink Stream Auto Alignment Disclosure Number: IPCOM000052735D
Original Publication Date: 1981-Jul-01
Included in the Prior Art Database: 2005-Feb-11

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Pan, RF [+details]


In present aspirated ink jet printing, the ink stream is subject to change in orientation when the forced air flow is introduced. This phenomenon is called ""stream bending''. The magnitude and direction of stream bending is unpredictable from aspirator to aspirator. Therefore, it causes stream guttering problems. For example, if the ink stream bends downwardly when the air flow is introduced, the trajectory of ink drops at low raster points (for example, the bottommost portions of the alpha-numeric characters being printed) is influenced or even blocked by the top of the gutter. Alternatively, if the ink stream bends up, it may overshoot the gutter, causing unwanted drops to be placed upon the print-receiving medium (paper).