Hewlett-packard Development Company, L.p.

Indigo N.v.

Hewlett-packard Indigo B.v.

Spectrum Sciences B.v.

Peretz Ben-Avraham

Benzion Landa

Becky Bossidan

Amiran Lavon

Galia Golodetz

Albert Teishev

Yaacov Almog

Moshe Levanon

Albert Teisheb

The invention relates to a liquid toner and imaging apparatus provided with an imaging surface having a liquid toner image formed thereon on fibrous toner particles and carrier liquid. The fibrous toner particles can be composed of a polymer portion and pigment dispersed therein, where the polymer portion comprises a surface of the fibrous toner particles and is insoluble in the carrier liquid at temperatures below 40&#xb0; C., so that the polymer portion will not dissolve or solvate in storage. The polymer portion also is solvatable by the carrier liquid only at temperatures above 50&#xb0; C. The carrier liquid has, as a major component, first liquid hydrocarbon having a first rate of evaporation, and, as a minor component, second liquid hydrocarbon having a second rate of evaporation which, at room temperature, is at least an order of magnitude less than the first rate of evaporation.

Imaging apparatus and improved toner therefor

Liquid toner and method of printing using same

A toner particle adapted for use in electrostatic image formation, comprising a polymer and flakes of metal dispersed in the polymer.

Toner material and method utilizing same

A liquid toner comprising: a carrier liquid; and toner particles dispersed in the carrier liquid, said toner particles comprising: a polymer blend comprising: a first polymer comprising a minor portion of said blend and having a relatively higher chemical reactivity with paper; and a second polymer comprising a major portion of said blend and having a relatively lower or null chemical reactivity with paper.

In a liquid toner for use in imaging processes which comprises pigmented polymer particles, at least one charge director and a hydrocarbon liquid toner carrier, the polymer is a blend of at least two distinct polymer components, the blend being characterized in that in a 40% non-volatile mixture with a hydrocarbon liquid toner carrier, it has on a semi-logarithmic viscosity vs. temperature cooling curve, a break-point at a temperature below about 65.degree. C. at a viscosity of between about 3.times.10.sup.5 centipoises and about 5.times.10.sup.6 centipoises. The polymer blend and an electrostatic imaging process (particularly one using an intermediate transfer member) utilizing the above toner are also claimed. Use of such polymer blends enables liquid toner to be applied in such processes at no more than and in some cases less than the customary processing temperatures.

Polymer blend liquid toner compositions

Process for forming an image on ceramic substrates

Printing on transparent film

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 agent may be used independently of the release agent in the toner composition.

Liquid toner composition

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Rehovot, Israel

Peretz Ben-Avraham