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Direct Ionic Printer Plotter

IP.com Disclosure Number: IPCOM000077200D
Original Publication Date: 1972-Jun-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

McCurry, RE: AUTHOR

Abstract

An ionic printer plotter constructed as shown in the drawing, has the advantage of utilizing ordinary paper in its operation rather than specially treated paper, by providing both image generation and image developing at the same location, so that a charge is not required to be retained as the paper passes through the system. Ordinary paper is supplied from a paper feed roll 3, in a continuous web which passes through a paper pretreat station 5 where it is appropriately dried, and then through a precharging station 7 where a uniform electrical charge is placed on the paper by any suitable means. The paper then passes over an impression roll 9, which carries charged toner supplied from a supply hopper 11 via a metering roll 13. After passing one or more doctor blades 15, the toner is charged by a toner charging device 17.

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Direct Ionic Printer Plotter

An ionic printer plotter constructed as shown in the drawing, has the advantage of utilizing ordinary paper in its operation rather than specially treated paper, by providing both image generation and image developing at the same location, so that a charge is not required to be retained as the paper passes through the system. Ordinary paper is supplied from a paper feed roll 3, in a continuous web which passes through a paper pretreat station 5 where it is appropriately dried, and then through a precharging station 7 where a uniform electrical charge is placed on the paper by any suitable means. The paper then passes over an impression roll 9, which carries charged toner supplied from a supply hopper 11 via a metering roll 13. After passing one or more doctor blades 15, the toner is charged by a toner charging device 17. The charged toner is carried around to the printing station, where the paper passes it as well as an ion generator arranged to function with a print head and shown at 19. At this point, the image is formed by suitable charge deposition resulting from the supply of pulses of ions generated, as a result of passing a pressurized ionizable gas through a suitable control configuration in the print head 19. The images thus developed on the paper 21 are fixed as by heat or other known methods at a fixing station 23, and thereafter the paper with the printed characters on it exits from the system.

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