Abstract: In an example, an apparatus includes an air treatment part to reduce the amount of a component comprised in air in the air treatment part and to supply treated air to a curing part, the air treatment part comprising a catalytic oxidizer to oxidize the component. The apparatus also includes the curing part to receive treated air from the air treatment part and to expose an item printed with a printing fluid comprising the component to the received treated air. The apparatus includes an air circulation system to cause the treated air to flow from the air treatment part into the curing part and to cause air from the curing part to flow into the air treatment part.

Abstract: Examples of a gas inlet structure (1130) and a deformable structure (1120) to store build material (1126) are described. The gas inlet structure may be coupled to the deformable structure. The deformable structure may also have an outlet (1121) that is connectable to an element (1122) of an aspiration system of a three-dimensional printing system, to allow build material to be supplied from the deformable structure on application of a vacuum by the aspiration system. While the vacuum is applied to the outlet, a valve of the gas inlet structure may be selectively actuated to allow gas flow into the deformable structure.

Abstract: Examples of the present disclosure relate to a build material container for a three-dimensional printing system. The container has an external casing with an upper surface, a lower compartment to receive a build material reservoir, at least one load-bearing element, and an upper compartment below the upper surface. The upper compartment and the lower compartment are separated by a lower surface. The at least one load-bearing element is arranged below the lower surface. The upper compartment has stiffening members arranged to distribute load received from the upper surface to the at least one load-bearing element.

Abstract: In an example, an apparatus includes an air treatment part to reduce the amount of a component comprised in air in the air treatment part and to supply treated air to a curing part, the air treatment part comprising a catalytic oxidizer to oxidize the component. The apparatus also includes the curing part to receive treated air from the air treatment part and to expose an item printed with a printing fluid comprising the component to the received treated air. The apparatus includes an air circulation system to cause the treated air to flow from the air treatment part into the curing part and to cause air from the curing part to flow into the air treatment part.

Abstract: An apparatus, e.g. for curing a printing fluid, comprising an air treatment part, a curing part and an air circulation system. The air treatment part is to reduce the amount of a component comprised in air in the air treatment part and to supply treated air to a curing part. The curing part is to receive treated air from the air treatment part and to expose an item printed with a printing fluid comprising the component to the received treated air. The air circulation system is to cause the treated air to flow from the air treatment part into the curing part and to cause air from the curing part to flow into the air treatment part.

Abstract: Examples of the present disclosure relate to a build material container for a three-dimensional printing system. The container has an external casing and a plurality of reservoirs within the external casing. Each reservoir has an outlet to supply build material stored within the reservoir.

Abstract: Certain examples of a build material container for a three-dimensional printing system is described. The build material container has an external casing and an internal compartment within the external casing. The internal compartment may have a reservoir to store build material, where the reservoir has a channel structure, and a surround that encloses the reservoir. A partition is provided within which the channel structure is mounted, the partition forming an upper surface of the internal compartment and being independent from the external casing and the surround. The partition restricts access to the internal compartment and collects build material during use of the channel structure.

Abstract: Examples of a gas inlet structure (1130) and a deformable structure (1120) to store build material (1126) are described. The gas inlet structure may be coupled to the deformable structure. The deformable structure may also have an outlet (1121) that is connectable to an element (1122) of an aspiration system of a three-dimensional printing system, to allow build material to be supplied from the deformable structure on application of a vacuum by the aspiration system. While the vacuum is applied to the outlet, a valve of the gas inlet structure may be selectively actuated to allow gas flow into the deformable structure.

Abstract: Certain examples of a build material container for a three-dimensional printing system is described. The build material container has an external casing and an internal compartment within the external casing. The internal compartment may have a reservoir to store build material, where the reservoir has a channel structure, and a surround that encloses the reservoir. A partition is provided within which the channel structure is mounted, the partition forming an upper surface of the internal compartment and being independent from the external casing and the surround. The partition restricts access to the internal compartment and collects build material during use of the channel structure.

Abstract: Examples of the present disclosure relate to a build material container for a three-dimensional printing system. The container has an external casing with an upper surface, a lower compartment to receive a build material reservoir, at least one load-bearing element, and an upper compartment below the upper surface. The upper compartment and the lower compartment are separated by a lower surface. The at least one load-bearing element is arranged below the lower surface. The upper compartment has stiffening members arranged to distribute load received from the upper surface to the at least one load-bearing element.

Abstract: Examples of the present disclosure relate to a build material container for a three-dimensional printing system. The container has an external casing and a plurality of reservoirs within the external casing. Each reservoir has an outlet to supply build material stored within the reservoir.

Abstract: An inkjet printing device has a frame, a transversely moveable printhead carriage, carrying a plurality of inkjet printheads, mounted for reciprocating movement on the frame, ink supply reservoirs mounted on the frame and flexible ink supply tubes for delivering ink from each of the ink reservoirs to a corresponding inkjet printhead. The device further includes an ink leakage detection system with an ink collector for collecting an ink leak from the ink supply tubes, and a sensing circuit coupled to the collecting unit, capable of detecting the presence of ink in the ink collector. A method of detecting the ink leak in the inkjet printing device includes the step of: conveying the ink leak from an ink delivery system to the ink collector, both comprised by the inkjet printing device; sensing when the ink is present in the ink collector; providing the information that an ink leakage is present in the device; and stopping the device.

Abstract: An ink supply tube guiding system for a large format inkjet printer includes front and rear oppositely facing tube guide channels each having a lower flange which supports the ink tubes which convey printer ink from stationary reservoirs to printheads mounted on a transversely movable printhead carriage. The tube guide channels provide support for the flexible ink supply tubes which are preferably bundled together in a vertically extending plane which has front and rear reaches of the tubes respectively supported by the front and rear channels and a reversed bend between the front and rear tube ridges which is self-supporting between the guide channels. The tube guide channels and ridges which support the guide channels on the printer frame provide a rigid structure in which the flexible ink tubes may be smoothly guided while minimizing wear of the flexible ink tubes.

Abstract: A replaceable ink delivery tube system for a large format ink jet printer includes four flexible ink delivery tubes arranged in parallel and each permanently connected at one end to a printhead connector and at the other end to an off-axis ink reservoir receiving connector which, when mounted in the printer, is accessible from the front side of the printer to insert and remove four separate ink reservoirs from the ink reservoir connector. Lockouts are provided at both the printhead connector and ink reservoir connector ends of the replaceable delivery tube system to ensure that only ink reservoirs and printheads of the correct type can be attached to the replaceable system. The replaceable ink delivery tube system enables rapid modification of a printer to accept either pigment based or dye-based inks and the lockouts prevent pigment based ink reservoirs and printheads from being connected to a dye-based ink replaceable tube system or vice versa.