Carrier evaporators for liquid electrophotography printing
AssigneeHP Indigo B.V.
InventorsMark Sandler, Peter Nedelin
Life of this patent
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Abstract
Aspects presented herein are directed towards a carrier evaporator for a Liquid Electrophotography Printing (LEP) system. In an example, the carrier evaporator provides a hot air supply to absorb an evaporated carrier liquid resulting in first air flow comprising a carrier vapour, an evacuator to evacuate at least a portion of the carrier vapour, a heat exchanger to decrease a temperature of the remaining carrier vapour thereby transforming the first air flow to a second airflow comprising carrier particles, and a filter to remove the carrier particles from the second air flow.
Claims15
A carrier evaporator for a Liquid Electrophotography Printing, LEP, printing system, the carrier evaporator comprising:
- a heater to provide a hot air supply to absorb an evaporated carrier liquid resulting in first air flow comprising a carrier vapour;
- an evacuator to evacuate at least a portion of the carrier vapour;
- a heat exchanger to decrease a temperature of the remaining carrier vapour thereby transforming the first air flow to a second airflow comprising carrier particles;
- and
- a filter to remove the carrier particles from the second air flow.
A filter in the form of an electrostatic demister for a Liquid Electrophotography Printing, LEP, printing system, wherein the filter comprises:
- at least two parallel ionized plates defining a first path for an air flow comprising carrier particles, the at least two parallel ionized plates to supply an electrostatic charge to the carrier particles;
- at least two parallel collection plates defining a second path for the air flow comprising the electrostatically charged carrier particles, the at least two parallel collection plates to form an electronic field within the second path such that as the air flow enters the second path, electrostatically charged carrier particles are attracted to a parallel collection plate and neutralized;
- and
- a carrier drain to collect the neutralized carrier particles.
A Liquid Electrophotography Printing, LEP, system comprising a carrier evaporator, the evaporator comprising:
- a heater to provide a hot air supply to absorb an evaporated carrier liquid resulting in first air flow comprising a carrier vapour;
- an evacuator to evacuate at least a portion of the carrier vapour;
- a heat exchanger to decrease a temperature of the remaining carrier vapour thereby transforming the first air flow to a second airflow comprising carrier particles;
- and
- a filter to remove the carrier particles from the second air flow.
Dependencies are inferred from the claim text.