Abstract: The printing method includes the steps of (1) Transferring after charging a charged liquid developer dispersion from a surface of the first member optionally via the at least one further member to a substrate, wherein excess liquid developer dispersion remains present on the first member after the transfer; (2) Treating the excess liquid developer dispersion so as to facilitate its removal from the first member (3) removing, at least substantially, the treated excess liquid developer dispersion from the surface of the first member using a removal device, and (4) upon interrupting or terminating the printing, removing material adhered to the removal device.

Abstract: Disclosed is a liquid toner dispersion which has a relative low shear viscosity between 1.25 and 225 and a relative conductivity between 0.3 and 30. The liquid toner dispersion includes toner particles in a non-polar carrier liquid, as well as a dispersing agent. This liquid toner dispersion is used in a digital printing process including adding dispersing agent during recycling of excess liquid toner dispersion remaining on a development member after patterned transfer of liquid toner dispersion to the imaging member.

Abstract: The printing method comprises the steps of (1) Transferring after charging a charged liquid developer dispersion from a surface of the first member optionally via the at least one further member to a substrate, wherein excess liquid developer dispersion remains present on the first member after said transfer; (2) Treating the excess liquid developer dispersion so as to facilitate its removal from the first member (3) removing, at least substantially, the treated excess liquid developer dispersion from the surface of the first member by means of a removal device, and (4) upon interrupting or terminating the printing, removing material adhered to the removal device.

Abstract: A method for the reduction of caking of excess liquid developer dispersion that remains present on the surface of a member after transfer of liquid developer dispersion from one member to another member in a digital printing apparatus, comprising the step of adding a dispersing composition to the excess liquid developer dispersion, wherein the dispersing composition comprises a dispersing agent.

Abstract: Disclosed is a liquid toner dispersion which has a relative low shear viscosity between 1.25 and 225 and a relative conductivity between 0.3 and 30. The liquid toner dispersion includes toner particles in a non-polar carrier liquid, as well as a dispersing agent. This liquid toner dispersion is used in a digital printing process including adding dispersing agent during recycling of excess liquid toner dispersion remaining on a development member after patterned transfer of liquid toner dispersion to the imaging member.

Abstract: A digital printing apparatus comprising a developing roller (102) and an image carrying roller (101); the developing roller (102) being arranged to transfer liquid toner (107) onto the image carrying roller (101) in accordance with a charge pattern; an upstream charger (111) upstream of an area (108) of rotational contact between the developing roller (102) and the image carrying roller (101); a downstream discharger (112, 122, 132) downstream of the area (108); a sensor (200) downstream of the area (108) to detect a property representative of the charge of a liquid toner residue; and a controller (210) to receive sensor data from the sensor (200) and to provide a control signal to control the downstream discharger.

Abstract: A method for the reduction of caking of excess liquid developer dispersion that remains present on the surface of a member after transfer of liquid developer dispersion from one member to another member in a digital printing apparatus, comprising the step of adding a dispersing composition to the excess liquid developer dispersion, wherein the dispersing composition comprises a dispersing agent.

Abstract: A digital printing apparatus comprising a developing roller (102) and an image carrying roller (101); the developing roller (102) being arranged to transfer liquid toner (107) onto the image carrying roller (101) in accordance with a charge pattern; an upstream charger (111) upstream of an area (108) of rotational contact between the developing roller (102) and the image carrying roller (101); a downstream discharger (112, 122, 132) downstream of the area (108); a sensor (200) downstream of the area (108) to detect a property representative of the charge of a liquid toner residue; and a controller (210) to receive sensor data from the sensor (200) and to provide a control signal to control the downstream discharger.