Browse Prior Art Database

Pressure Surge Accumulator

IP.com Disclosure Number: IPCOM000077480D
Original Publication Date: 1972-Aug-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Greene, J: AUTHOR

Abstract

An ink injector, pressure-pulsed printer 1 with print head PH having nozzles N moves relative to paper P. Orifice 0 limits flow rate from ink supply hose H and causes a pressure drop. Chamber C collects ink passing through 0 and maintains a supply of ink for PH. Diaphragm D separates ink from the atmosphere and deflects to phantom position DD. Diaphragm D can be omitted from the system. Vent V is necessary to permit unrestricted flow of air inside chamber C. Top T is a dust cover.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Pressure Surge Accumulator

An ink injector, pressure-pulsed printer 1 with print head PH having nozzles N moves relative to paper P. Orifice 0 limits flow rate from ink supply hose H and causes a pressure drop. Chamber C collects ink passing through 0 and maintains a supply of ink for PH. Diaphragm D separates ink from the atmosphere and deflects to phantom position DD. Diaphragm D can be omitted from the system. Vent V is necessary to permit unrestricted flow of air inside chamber C. Top T is a dust cover.

Acceleration and deceleration of PH causes a pressure increase at the exit E of H. Flexing of H during motion causes a cross section change and a pressure increase.

In this accumulator such pressure changes are relieved by decreasing in pressure when passing thru 0. The small amount of ink, which passes thru 0 during the pressurization of H collects under D raising static head at exit EE of C, to change the pressure in PH slightly. During the nonpressurized period of H, the excess ink in C returns through 0 to H. Static head SH applied to nozzles N is shown on the figure.

1

Page 2 of 2

2

[This page contains 1 picture or other non-text object]