Browse Prior Art Database

Drop Detector System

IP.com Disclosure Number: IPCOM000056371D
Original Publication Date: 1980-Dec-01
Included in the Prior Art Database: 2005-Feb-14

Publishing Venue

IBM

Related People

Authors:
Habegger, MA Salvadore, JM Sendelweck, ML [+details]

Abstract

The stream of drops in an ink jet printing machine is often monitored optically, both to ascertain its presence and to sense deviations that can be corrected through electronic feedback. Shown in the figure is a top view of an optical detector system that (a) does not require an independently aligned aperture and (b) is relatively insensitive to variations in stream height.