Abstract: In an example of the disclosure, a printhead is caused to spit a liquid into a main cavity of a container. The container includes an overflow pocket for collecting liquid that has overflown from the main cavity. A sensor is caused to detect whether liquid is present in the overflow pocket. Responsive to sensor detection that liquid is present in the overflow pocket, a warning or instruction message is caused to be sent for user consumption.

Abstract: In an example of the disclosure, a printhead is caused to spit a liquid into a main cavity of a container. The container includes an overflow pocket for collecting liquid that has overflown from the main cavity. A sensor is caused to detect whether liquid is present in the overflow pocket. Responsive to sensor detection that liquid is present in the overflow pocket, a warning or instruction message is caused to be sent for user consumption.

Abstract: In one example, a structure to hold a printhead includes a surface defining an opening through which the printhead orifices may be exposed for printing and a replaceable shield shielding an area of the surface around the opening.

Abstract: In some examples, a service cartridge includes a fluid storage container for receiving fluid discharged from a fluid ejection device, and a web wipe for performing a wiping operation on the fluid ejection device. In a first wiping operation, the web wipe is caused to be advanced by a first length. An amount of discharged fluid into the fluid storage container is monitored. In a second wiping operation after the first wiping operation, in response to the monitored amount of discharged fluid into the fluid storage container, the web wipe is caused to be advanced by a second length different from the first length.

Abstract: In one example, a wiper for wiping the face of a movable printhead includes a stationary blade oriented perpendicular to the direction of travel of the printhead and spanning the path of the printhead.

Abstract: In some examples, a service cartridge includes a fluid storage container for receiving fluid discharged from a fluid ejection device, and a web wipe for performing a wiping operation on the fluid ejection device. In a first wiping operation, the web wipe is caused to be advanced by a first length. An amount of discharged fluid into the fluid storage container is monitored. In a second wiping operation after the first wiping operation, in response to the monitored amount of discharged fluid into the fluid storage container, the web wipe is caused to be advanced by a second length different from the first length.

Abstract: An example method for managing a service cartridge for an inkjet printhead in accordance with the present disclosure is provided. The service cartridge comprises a printing fluid storage container for receiving printing fluid discharged from the printhead and a web wipe intended to be advanced a predetermined length for performing a wiping operation on the printhead. The method comprises monitoring the amount of discharged printing fluid into the container, monitoring the amount of consumed web wipe, and causing that in a subsequent wiping operation the web wipe is advanced a length that is higher than the predetermined length, if the ratio of the amount of discharged printing fluid to the capacity of the printing fluid storage container is higher than the ratio of the amount of consumed web wipe to the total length of the web wipe.

Abstract: In one example, a wiper for wiping the face of a movable printhead includes a stationary blade oriented perpendicular to the direction of travel of the printhead and spanning the path of the printhead.

Abstract: In one example, a structure to hold a printhead includes a surface defining an opening through which the printhead orifices may be exposed for printing and a replaceable shield shielding an area of the surface around the opening.

Abstract: An example method for managing a service cartridge for an inkjet printhead in accordance with the present disclosure is provided. The service cartridge comprises a printing fluid storage container for receiving printing fluid discharged from the printhead and a web wipe intended to be advanced a predetermined length for performing a wiping operation on the printhead. The method comprises monitoring the amount of discharged printing fluid into the container, monitoring the amount of consumed web wipe, and causing that in a subsequent wiping operation the web wipe is advanced a length that is higher than the predetermined length, if the ratio of the amount of discharged printing fluid to the capacity of the printing fluid storage container is higher than the ratio of the amount of consumed web wipe to the total length of the web wipe.

Abstract: The present disclosure provides a waste ink spittoon for a printhead service station. The spittoon defines a reservoir for a waste ink composition ejected from a printhead. The spittoon comprises a gelling agent for increasing the viscosity of the waste ink composition, whereby the gelling agent comprises a particulate mass of solid particles of the gelling agent.

Abstract: An ink aerosol filtration system includes an inlet, a filtration chamber communicated with the inlet and including at least one filter member, and an airflow source communicated with the filtration chamber to generate flow into the inlet, through the filtration chamber and through the at least one filter member, wherein the airflow source is controlled to maintain substantially constant pressure at the inlet.

Abstract: An ink aerosol filtration system includes an inlet, a filtration chamber communicated with the inlet and including at least one filter member, and an airflow source communicated with the filtration chamber to generate flow into the inlet, through the filtration chamber and through the at least one filter member, wherein the airflow source is controlled to maintain substantially constant pressure at the inlet.

Abstract: A print head servicing unit comprises a cassette which is removably insertable in a hard copy apparatus and comprises some or all of a moveable web of absorbent colour material for receiving waste ink from the print head; a storage compartment for accommodating received waste ink; a cap for the print head; and a filter for filtering air-borne particles in the region of the print head. The path of the web through the cassette is such that a region thereof for receiving spat ink from the print head is arranged downstream of a region thereof for wiping ink from the print head.

Abstract: In one example, an air barrier system for a printhead assembly includes a source of pressurized air and multiple channels operatively connected to the air source to channel multiple streams of air between two printheads in the printhead assembly.

Abstract: In one example, an air barrier system for a printhead assembly includes a source of pressurized air and multiple channels operatively connected to the air source to channel multiple streams of air between two printheads in the printhead assembly.

Abstract: A wet ink printer uses a heated printhead. A platen guides and supports the print medium during printing, and has a plurality of raised ribs. In an example, the ribs extend on the base generally along the advance direction of the print media. Each rib comprises a discontinuous series of rib portions, and wherein between each adjacent pair of ribs is provided a spacing to allow deformation of the print medium towards the platen base.

Abstract: A wet ink printer uses a heated printhead. A platen guides and supports the print medium during printing, and has a plurality of raised ribs. In an example, the ribs extend on the base generally along the advance direction of the print media. Each rib comprises a discontinuous series of rib portions, and wherein between each adjacent pair of ribs is provided a spacing to allow deformation of the print medium towards the platen base.

Abstract: A hold down apparatus for use in a hardcopy device (20) comprising a first surface adapted to support a sheet of print media (74) thereon and a vacuum guide arranged to support a partial vacuum, the first surface having a plurality of apertures therein in fluid communication with the vacuum guide via a porous or labyrinthine flow restraint (82a, 82b), the apparatus being arranged such that downstream of the apertures, unimpeded vacuum flow between the plurality of apertures is substantially prevented.

Abstract: A media advancing device for a hardcopy apparatus comprising: a platen having at least one slot and a top surface, whereby a medium advances on the top surface; and a plurality of openings connecting the top surface to at least one zone of negative pressure; and a revolving overdrive roller having an outer surface, the outer surface emerging above the top surface through the slot, the overdrive roller being substantially sealed in a housing below the top surface, the housing separating the overdrive roller from the zone of negative pressure.