A method of printing includes, applying to an intermediate transfer member (ITM) (44), one or more fluids that include at least a printing fluid for forming an image on the ITM (44). At least part of the image is transferred from the ITM (44) to a target substrate (50). Residues of the one or more fluids that were not transferred to the target substrate (50) and remained on the ITM (44), are transferred from the ITM (44) to one or more rotatable elements (112), and the residues are removed from the one or more rotatable elements (112).

In an example of the disclosure, a blanket servicing system includes a rotatably mounted endless cleaning surface and a scraper. The endless cleaning surface is to have a first engagement with a blanket to obtain a layer of thermoplastic print agent from the blanket. The endless cleaning surface is to have a second engagement with the blanket to receive residue from the blanket onto the layer of thermoplastic print agent. The scraper is to scrape the endless cleaning surface to transfer the residue from the endless cleaning surface to a collection element.

Disclosed is a liquid electrophotographic printing apparatus that comprises a developer roller, a cleaning member to contact the developer roller with a contact force and a force adjustment arrangement to adjust the contact force.

Disclosed is a liquid electrophotographic printing apparatus that comprises a developer roller, a cleaning member to contact the developer roller with a contact force and a force adjustment arrangement to adjust the contact force.

An example system includes a conveyor. The conveyor is not a photoconductor. The system also includes a developer unit. The developer unit is to internally concentrate printing liquid. The developer unit also is to deliver the printing liquid to the conveyor. The system includes a wiper in contact with the conveyor. The wiper is to remove the printing liquid from the conveyor.

An example system includes a conveyor. The conveyor is not a photoconductor. The system also includes a developer unit. The developer unit is to internally concentrate printing liquid. The developer unit also is to deliver the printing liquid to the conveyor. The system includes a wiper in contact with the conveyor. The wiper is to remove the printing liquid from the conveyor.

In one example, a conduit for returning liquid printing material to a liquid printing material storage tank in a printer comprises a first tubular section and a second section for receiving a flow of liquid printing material from the first tubular section. The second section is arranged to convert the flow of liquid material received from the first section into a falling liquid curtain of liquid printing material that is output from the second section to flow to the liquid printing material tank.

A method and a developer station are described. The method and developer station being operable to adapt the inking of an image substrate. The method including applying a voltage across a developer layer on the developer element of the developer station. The application of the voltage causing a current to flow through the developer layer, where the current can be measured. The an indicator of a thickness of the developer layer and/or of the toner quantity in the developer layer is generated based on the voltage and/or the current. The indicator can be used to adjust the inking of the image substrate. For example, the current can be compared to a characteristic curve to generate the indicator.

A method and a developer station are described. The method and developer station being operable to adapt the inking of an image substrate. The method including applying a voltage across a developer layer on the developer element of the developer station. The application of the voltage causing a current to flow through the developer layer, where the current can be measured. The an indicator of a thickness of the developer layer and/or of the toner quantity in the developer layer is generated based on the voltage and/or the current. The indicator can be used to adjust the inking of the image substrate. For example, the current can be compared to a characteristic curve to generate the indicator.

The present wet development device includes a developer carrying member, a supply member that supplies a liquid developer to the developer carrying member, a charger that charges the liquid developer on the developer carrying member, a cleaner that removes the liquid developer on the developer carrying member, and a bias applying member that applies alternating bias in contact with the developer carrying member before removing by the cleaner. In a direction in alignment with an axis of rotation of the developer carrying member, a range to which the alternating bias is applied by the bias applying, member is located within a range in which the liquid developer is supplied onto the developer carrying member.