Spectrum Sciences B.v.

Spectrum Sciences

Yossi Adam

Benzion Landa

Moshe Levanon

Yehuda Niv

Israel Grossinger

Amiran Lavon

Hanna Pinhas

Yakov Krumberg

Alon Gazit

Imaging method and apparatus

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.

Method for maintaining a liquid composition

Imaging apparatus including an electrostatic imaging surface, latent image forming apparatus for forming an electrostatic latent image on said electrostatic imaging surface and development apparatus for developing said electrostatic latent image which includes supply apparatus for supplying a liquid toner to the image forming surface, the supply apparatus including a multiplicity of independently controllable outlets, preferably spray outlets, and a development surface for developing the electrostatic latent image using the liquid toner. The supply apparatus is preferably a multi-color supply apparatus and the multiplicity of outlets includes a plurality of individually controllable outlets, for supplying liquid toner of each of a plurality of colors.

Liquid toner developer

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 acquire charges of a second polarity opposite to the first polarity.

Process for preparing liquid toner composition

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 the image to flow into the third areas, thereby at least partially eliminating the third areas.

Background cleaning system for liquid developer imaging apparatus

Two-color imaging system and process

Apparatus for image transfer including an image bearing surface and an image receiving surface arranged for relative movement along a pathway whereby portions of the image bearing surface and the image receiving surface sequentially come into propinquity for image transfer therebetween and subsequently move out of propinquity following image transfer therebetween, potential impression device associated with at least one portion of at least one of the image bearing surface and the image receiving surface for impressing a potential on the at least one portion, and device for energizing the potential impression device only when the at least one portion is located at a predetermined location along the pathway, thereby to provide desired image transfer enhancement.

Imaging system with intermediate transfer member

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 pigmented particles carrying charges of a second polarity, opposite to the first polarity.

Liquid toner composition containing two different charge directors

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 electrostatic charge, and apparatus for developing the latent image by contacting it with a liquid toner composition comprising an insulating, nonpolar liquid having admixed therewith a first type of pigmented particles having charges of a first polarity and a second type of pigmented particles having charges of an opposite polarity, such that the first type of pigmented particles becomes deposited onto the first portion and the second type of pigment particles becomes deposited onto the second portion.

Growing community of inventors

Rehovot, Israel

Yossi Adam