Browse Prior Art Database

Cassette Ink Jet Head

IP.com Disclosure Number: IPCOM000082798D
Original Publication Date: 1975-Feb-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Pelkie, RE: AUTHOR [+3]

Abstract

An ink jet head for a printer when assembled in its own package provides several advantages; among these are the convenience of installation and replacement, protection from the environment such as air turbulence and electromagnetic radiation, maintenance of component alignment, and compact assembly.

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Cassette Ink Jet Head

An ink jet head for a printer when assembled in its own package provides several advantages; among these are the convenience of installation and replacement, protection from the environment such as air turbulence and electromagnetic radiation, maintenance of component alignment, and compact assembly.

One example of a cassette arrangement for an ink jet head is shown and generally comprises a housing 1 having a cover 2. The case material of the cassette is preferably a high-impact strength organic polymer. The housing and cover can be molded with the necessary openings, internal supports and heat- sink fins integral with the housing.

In the arrangement shown, an ink supply line 3 extends from outside housing 1 to a print head body 4 enclosing a drive crystal 5 and nozzle 6. A charge plate 7 is supported on the print head body 4 and the deflection plate 8 is supported by housing 1. A light source and optical sensor 9 are located downstream of the ink drops adjacent gutter 10. The gutter duct is connected to a second duct 11 which also extends outside the cassette.

An opening 12 is provided for emerging ink drops 13 and charged mist shields 14 can be externally located adjacent the opening. Electronic circuit modules 15 are arranged within housing 1 and suitably connected to the drive crystal 5, charge plate 7, deflection plates 8, 21 and sensors 9 via conductors, not shown. Electrical connection from the cassette to the external control is thr...