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Ink Weight Monitoring System

IP.com Disclosure Number: IPCOM000042994D
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Stryeski, RW: AUTHOR

Abstract

This article relates generally to monitoring systems and more particularly to ink weight monitoring systems which permit the continuous monitoring of the percent volume of ink being applied to a ribbon during a coating process. The above figure shows an ink weight monitoring system 1 which includes an ink pump 2 which is fed from an ink separatory funnel 3. A flow meter 4 is disposed in the pump output line. A similar flow meter 5 is disposed in a pump by-pass line 6. A tee junction 7 diverts a major portion of the ink output of pump 2 into by-pass line 6 which returns the by-passed ink via a by-pass valve 8 to funnel 3. The remaining ink is delivered via a needle valve 9 to an ink head 10 which deposits a stripe of ink on a ribbon (not shown).

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Ink Weight Monitoring System

This article relates generally to monitoring systems and more particularly to ink weight monitoring systems which permit the continuous monitoring of the percent volume of ink being applied to a ribbon during a coating process. The above figure shows an ink weight monitoring system 1 which includes an ink pump 2 which is fed from an ink separatory funnel 3. A flow meter 4 is disposed in the pump output line. A similar flow meter 5 is disposed in a pump by-pass line 6. A tee junction 7 diverts a major portion of the ink output of pump 2 into by-pass line 6 which returns the by-passed ink via a by-pass valve 8 to funnel 3. The remaining ink is delivered via a needle valve 9 to an ink head 10 which deposits a stripe of ink on a ribbon (not shown). Flow meters 4, 5 provide output electrical signals in the form of AC signals at frequencies which are a direct function of volumetric flow through the meters. The output signals from meters 4, 5 are fed to flow totalizers 11, 12, respectively. At the same time, a temperature probe 13, disposed in the line to ink head 10, provides an output signal to totalizer 12 which compensates for ink density changes due to temperature changes. Since all inks change density in a consistent manner with temperature, the totalizer allows ink density to be inferred from a temperature measurement. Once the volume of ink to ink head 10 at a specific temperature is known, a system integrator 15 computes the volume...