Browse Prior Art Database

Role of Lecithin in Electrophotographic Toners

IP.com Disclosure Number: IPCOM000104034D
Original Publication Date: 1993-Feb-01
Included in the Prior Art Database: 2005-Mar-18
Document File: 1 page(s) / 24K

Publishing Venue

IBM

Related People

Chen, HH: AUTHOR [+2]

Abstract

Disclosed is a unique material Soya Lecithin - a glycerol linoleate phosphotidyl choline or ethanolamine in dry toners of electrographic printers to enhance the print quality. The unique property of lecithin performing as positive and negative charge control agent is very useful in both charge area development (CAD) and discharge area development (DAD) processes. The structure of Lecithin can be stated as follows: (See Fig. 1).

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Role of Lecithin in Electrophotographic Toners

      Disclosed is a unique material Soya Lecithin - a glycerol
linoleate phosphotidyl choline or ethanolamine in dry toners of
electrographic printers to enhance the print quality.  The unique
property of lecithin performing as positive and negative charge
control agent is very useful in both charge area development (CAD)
and discharge area development (DAD) processes.  The structure of
Lecithin can be stated as follows:  (See Fig. 1).

1.  The presence of Choline enhances the charge propensity of toners
    in both CAD and DAD systems.
2.  The fatty acid side chain contributes to the lower surface energy
    of the toner thereby improving the toner fuse quality.
3.  Lecithin improves the powder and melt flow of the toner.  This
    has enhanced the overall print quality.

Disclosed Anonymously.