Browse Prior Art Database

Start Up/Turn Off System for Ink Jet Printer

IP.com Disclosure Number: IPCOM000081589D
Original Publication Date: 1974-Jul-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Helinski, EF: AUTHOR

Abstract

The basic idea of this system is that air, water and ink are pumped through the nozzle 10 in that sequence during start-up. This enables the momentum of the water and ink to reach the desired level after valves 11, 12 and 18 are operated to turn on flow so that the selector 13 and deflector 14 are not spattered with water or ink. When the ink goes through the nozzle 10, the stream is stable and all air is out of the system. During start-up the selector 13 is not energized and water goes to gutter 15. When the ink is flowing through the nozzle 10, selector 13 is turned on, pulling the stream of ink into gutter 16. The system is now ready to function as a printer.

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Start Up/Turn Off System for Ink Jet Printer

The basic idea of this system is that air, water and ink are pumped through the nozzle 10 in that sequence during start-up. This enables the momentum of the water and ink to reach the desired level after valves 11, 12 and 18 are operated to turn on flow so that the selector 13 and deflector 14 are not spattered with water or ink. When the ink goes through the nozzle 10, the stream is stable and all air is out of the system. During start-up the selector 13 is not energized and water goes to gutter 15. When the ink is flowing through the nozzle 10, selector 13 is turned on, pulling the stream of ink into gutter 16. The system is now ready to function as a printer.

During shutdown, valve 12 would be turned on, feeding water into the system to the nozzle 10. Valve 17 would turn off a short time after valve 12 is turned on to prevent water from diluting the ink in the ink supply. The selector 13 then is turned off allowing the mixture of ink and water in the pipe 7 connected to the nozzle 10 to go to gutter 15.

The next step is to close valve 11 and then open the valves 18 and 19 to allow flow of air from the aspirator 20 to the nozzle 10, thereby pulling all the water out of the nozzle and preventing a build up of dry ink in the nozzle or interconnecting tubing when the printer is shutdown. At this time, the water is now located between valves 11 and 12 so that start-up can take place in the originally-described sequence....