Abstract: In one example of the disclosure, a substantially transparent substrate is provided at a printer. A primer layer is applied upon a first surface of the substrate. A security ink layer that includes security information is applied upon the primer layer. An opaque background ink layer is applied upon the security ink layer. A corona treatment is applied to a second surface, located on an opposite side of the substrate relative to the first surface. A release ink layer is applied upon the corona-treated second surface. An opaque cover image ink layer is applied upon the release ink layer.

Abstract: In one example of the disclosure, a substantially transparent substrate is provided at a printer. A primer layer is applied upon a first surface of the substrate. A security ink layer that includes security information is applied upon the primer layer. An opaque background ink layer is applied upon the security ink layer. A corona treatment is applied to a second surface, located on an opposite side of the substrate relative to the first surface. A release ink layer is applied upon the corona-treated second surface. An opaque cover image ink layer is applied upon the release ink layer.

Abstract: In one example of the disclosure, a substantially transparent substrate is provided at a printer. A primer layer is applied upon a first surface of the substrate. A security ink layer that includes security information is applied upon the primer layer. An opaque background ink layer is applied upon the security ink layer. A corona treatment is applied to a second surface, located on an opposite side of the substrate relative to the first surface. A release ink layer is applied upon the corona-treated second surface. An opaque cover image ink layer is applied upon the release ink layer.

Abstract: In one example of the disclosure, a substantially transparent substrate is provided at a printer. A primer layer is applied upon a first surface of the substrate. A security ink layer that includes security information is applied upon the primer layer. An opaque background ink layer is applied upon the security ink layer. A corona treatment is applied to a second surface, located on an opposite side of the substrate relative to the first surface. A release ink layer is applied upon the corona-treated second surface. An opaque cover image ink layer is applied upon the release ink layer.

Abstract: In an example, a first wiper blade is to contact the photoconductive surface and to wipe at least some of particles and fluid from the photoconductive surface and wherein a second wiper blade is to contact the photoconductive surface and to wipe at least some of the particles and fluid that have passed the first wiper blade, from the photoconductive surface. The first wiper blade includes at least one perforation forming a passage through the wiper blade to transmit part of the particles and fluid during wiping.

Abstract: Example implementations provide a method of processing data associated with printing a plurality of separations; the method comprising creating, from the data associated with the plurality of separations, complementary separation layer data associated with the complement of data relating to an opaque separation of the plurality of separations.

Abstract: In one example of the disclosure, a substantially transparent substrate is provided at a printer. A primer layer is applied upon a first surface of the substrate. A security ink layer that includes security information is applied upon the primer layer. An opaque background ink layer is applied upon the security ink layer. A corona treatment is applied to a second surface, located on an opposite side of the substrate relative to the first surface. A release ink layer is applied upon the corona-treated second surface. An opaque cover image ink layer is applied upon the release ink layer.

Abstract: An electrostatic ink composition is disclosed. The electrostatic ink composition can comprise: a liquid carrier; and particles dispersed in the liquid carrier, wherein the particles comprise a thermoplastic resin, and a metal or metal alloy pigment having a melting of point of less than about 200° C. The metal or metal alloy pigment can have a diameter of from about 0.01 ?m to about 50 ?m.

Abstract: In an example, a first wiper blade is to contact the photoconductive surface and to wipe at least some of particles and fluid from the photoconductive surface and wherein a second wiper blade is to contact the photoconductive surface and to wipe at least some of the particles and fluid that have passed the first wiper blade, from the photoconductive surface. The first wiper blade includes at least one perforation forming a passage through the wiper blade to transmit part of the particles and fluid during wiping.

Abstract: Example implementations provide a method of processing data associated with printing a plurality of separations; the method comprising creating, from the data associated with the plurality of separations, complementary separation layer data associated with the complement of data relating to an opaque separation of the plurality of separations.

Abstract: Apparatus for maintenance of ink concentration stability in a reservoir (12) of a solid ink add printing device (10) over the course of a printing operation, comprises: a look-ahead unit (24) which looks at incoming printing instruction data (22) to determine pending ink usage, and a dynamic feed mechanism control unit (18) to dynamically control the feeding mechanism to modify feeding of the ink particles based on the determined pending ink usage.

Abstract: A system for recycling a liquid in a printer comprises a first reservoir configured for collecting possibly polluted liquid to be recycled from the printer, a filtration system configured for purifying the liquid received from the first reservoir, and a second reservoir configured for collecting the liquid from the filtration system, wherein overflow from the second reservoir is directed to the first reservoir.

Abstract: A member for controlling foam in a material reservoir includes a body, a concave space in the body, and wings extending from the body in the concave space. A method of controlling foam in an ink reservoir of a printing system includes rotating a foam control member above ink in the reservoir to dissipate accumulated foam, where the member includes a concave space open toward the ink and wings extending in the concave space.

Abstract: Apparatus for maintenance of ink concentration stability in a reservoir (12) of a solid ink add printing device (10) over the course of a printing operation, comprises: a look-ahead unit (24) which looks at incoming printing instruction data (22) to determine pending ink usage, and a dynamic feed mechanism control unit (18) to dynamically control the feeding mechanism to modify feeding of the ink particles based on the determined pending ink usage.

Abstract: A member for controlling foam in a material reservoir includes a body, a concave space in the body, and wings extending from the body in the concave space. A method of controlling foam in an ink reservoir of a printing system includes rotating a foam control member above ink in the reservoir to dissipate accumulated foam, where the member includes a concave space open toward the ink and wings extending in the concave space.

Abstract: A system for recycling a liquid in a printer comprises a first reservoir configured for collecting possibly polluted liquid to be recycled from the printer, a filtration system configured for purifying the liquid received from the first reservoir, and a second reservoir configured for collecting the liquid from the filtration system, wherein overflow from the second reservoir is directed to the first reservoir.

Abstract: A method for reducing foam associated with an ink reservoir of a printing press is provided. The method can include printing a plurality of printed images with a nonaqueous ink delivered from an ink reservoir, periodically delivering a defoaming agent into the ink reservoir to reduce foam formation in the ink reservoir, and periodically delivering a charge control agent into the ink reservoir to charge the nonaqueous ink. Accordingly, fresh defoaming agent can be added to the ink reservoir periodically to reduce the level of foam in the reservoir and thus avoiding increasing foam levels associated with the degradation of the defoaming agent over time.