| Patent Number |
Title Of Patent |
Date Issued |
| 5300390 |
Liquid toner composition |
April 5, 1994 |
| An improved liquid toner composition for developing latent electrostatic images comprising toner particles, a release agent and a nonpolar dispersant liquid. An agent causing an apparent increase in the cohesivity of the toner particles may be included in the toner composition, or such |
| 5121164 |
Method for maintaining a liquid composition |
June 9, 1992 |
| A method for maintaining a preselected concentrations of first and second charge directors in a toner composition, where such composition is being subjected to a use in which initial concentrations of the first and second charge directors are being depleted. |
| 5108866 |
Process for preparing liquid toner composition |
April 28, 1992 |
| A process for preparing a liquid toner compsition which includes the steps of combining first and second types of pigmented particles and mixing them together whereby the first type of pigmented particles acquire charges of a first polarity and the second type of pigmented particles acqu |
| 5034778 |
Background cleaning system for liquid developer imaging apparatus |
July 23, 1991 |
| Dual color imaging process and system providing formation of an image having adjacent first and second areas respectively containing first and second types of pigmented particles undesirably separated by third areas relatively free of particles of the first and second types and causing t |
| 5012300 |
Two-color imaging system and process |
April 30, 1991 |
| Dual color imaging process and system providing formation of an image having adjacent first and second areas respectively containing first and second types of pigmented particles undesirably separated by third areas relatively free of particles of the first and second types and causing t |
| 4966824 |
Liquid toner composition containing two different charge directors |
October 30, 1990 |
| A liquid toner composition for use in development of a latent electrostatic image in an electrostatic imaging process, which comprises an insulating, nonpolar liquid having admixed therewith a first type of pigmented particles carrying charges of a first polarity and a second type of |
| 4947201 |
Imaging system |
August 7, 1990 |
| An imaging system including apparatus for forming a latent image on a surface, the latent image including a first portion having a high level of electrostatic charge, a second portion having a low level of electrostatic charge and a third portion having an intermediate level of electrost |
