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Browse Prior Art Database

Osmotic Ink Jet Viscosity Control

IP.com Disclosure Number: IPCOM000089535D
Original Publication Date: 1977-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 35K

Publishing Venue

IBM

Related People

Bingham, RE: AUTHOR [+2]

Abstract

Disclosed is a bottle cam containing a second chamber 12 which is filled with water in minimal additives, such as biocides. The second container 12 is constructed such that it will osmotically release its water content through osmotic stopper 14 into the main body of the ink 16. The walls of container 12 are such that as the water is drawn up through the osmotic stopper by partial vacuum the walls of container 12 will collapse to aid in the evacuation of the water from that cavity into the main ink reservoir 16.

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Osmotic Ink Jet Viscosity Control

Disclosed is a bottle cam containing a second chamber 12 which is filled with water in minimal additives, such as biocides. The second container 12 is constructed such that it will osmotically release its water content through osmotic stopper 14 into the main body of the ink 16. The walls of container 12 are such that as the water is drawn up through the osmotic stopper by partial vacuum the walls of container 12 will collapse to aid in the evacuation of the water from that cavity into the main ink reservoir 16.

This arrangement aids significantly in maintaining the appropriate viscosity of the ink for use in an ink jet printing apparatus, since significant water loss is incurred during the circulation and recirculation of the ink.

Osmotic membranes may be selected for their rate of transfer, thus significantly controlling the viscosity of the ink. The collapse of chamber or container 12, as a vacuum is drawn in the main ink container 10, will aid the osmotic transfer and at the sane time enhance the transfer during that period of time when the ink bottle is installed on the machine.

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