Abstract: A materials kit for three-dimensional (3D) printing can include a powder bed material including electroactive polymer particles including electroactive polymer having a melting temperature from about 100° C. to about 250° C. and a fusing agent including a radiation absorber to selectively apply to the powder bed material.

Abstract: A materials kit for 3D printing can include a powder bed material including from about 60 wt % to 100 wt % composite fibers having an average aspect ratio from about 3:1 to about 30:1 and a fusing agent including an energy absorber to absorb electromagnetic radiation to produce heat. The composite fibers can include glass fibers coated with an encapsulating polymer, wherein the glass fibers can be included at from about 5 wt % to about 40 wt % based on the total weight of the powder bed material.

Abstract: A three-dimensional (3D) printing kit includes a build material composition and a fusing agent. The build material composition includes biodegradable polyester particles having a volume-based particle size distribution including D10 ranging from about 65 ?m to about 85 ?m, D50 ranging from about 125 ?m to about 145 ?m, and D90 ranging from about 225 pm to about 245 ?m. The fusing agent includes an energy absorber dissolved or dispersed in a liquid vehicle.

Abstract: Examples include an end cap system for a developer unit in a liquid photographic printer. The end cap system includes an end cap and a film that includes a first outermost superficial layer and a second outermost superficial layer opposed to the first outermost superficial layer. The first outermost superficial layer is a pressure sensitive adhesive layer applied to a portion of an inner surface of the end cap. The second outermost superficial layer is a low surface energy layer to be exposed to liquid photographic printing fluid during printing.

Abstract: A materials kit for 3D printing can include a powder bed material including from about 60 wt % to 100 wt % composite fibers having an average aspect ratio from about 3:1 to about 30:1 and a fusing agent including an energy absorber to absorb electromagnetic radiation to produce heat. The composite fibers can include glass fibers coated with an encapsulating polymer, wherein the glass fibers can be included at from about 5 wt % to about 40 wt % based on the total weight of the powder bed material.

Abstract: A materials kit for three-dimensional (3D) printing can include a powder bed material including electroactive polymer particles including electroactive polymer having a melting temperature from about 100° C. to about 250° C. and a fusing agent including a radiation absorber to selectively apply to the powder bed material.

Abstract: In one example, a developer roller for liquid electrophotographic printing includes a cylindrical metal inner core, a rigid conductive plastic outer core surrounding the inner core, and a compliant exterior surrounding the outer core.

Abstract: The present disclosure discloses a charge roller (1) particularly but not exclusively for charging a photoconductor in a liquid electro-photograph (LEP) image-forming apparatus. The charge roller includes a cured composition of an epichlorohydrin/ethylene oxide/allyl glycidyl ether terpolymer, a lithium salt and carbon black.

Abstract: The present disclosure relates to a liquid electrophotographic ink developer unit. The unit comprises a developer roller, and a secondary roller that co-operates with the developer roller. The developer roller is formed of a material having a specific resistivity of less than 1×106 ?·cm. The secondary roller is formed of a material having a specific resistivity of 1×104 to 1×109 ?·cm.

Abstract: In one example, a developer roller for liquid electrophotographic printing includes a cylindrical metal inner core, a rigid conductive plastic outer core surrounding the inner core, and a compliant exterior surrounding the outer core.

Abstract: In some examples, a printing liquid developer includes a developer roller that has a hollow tubular base body formed of a material including conductive carbon fiber, a conductive, compliant layer around an outer surface of the hollow tubular base body, and an electrically conductive support separate from the hollow tubular base body and electrically contacted to a surface of the hollow tubular base body.

Abstract: In some examples, a printing liquid developer includes a developer roller that has a hollow tubular base body formed of a material comprising conductive carbon fiber, a conductive, compliant layer around an outer surface of the hollow tubular base body, and an electrically conductive support separate from the hollow tubular base body and electrically contacted to a surface of the hollow tubular base body.

Abstract: The present disclosure relates to a liquid electrophotographic ink developer unit. The unit comprises a developer roller, and a secondary roller that co-operates with the developer roller. The developer roller is formed of a material having a specific resistivity of less than 1×106 ?·cm. The secondary roller is formed of a material having a specific resistivity of 1×104 to 1×109 ?·cm.

Abstract: The present disclosure discloses a new charge roller particularly but not exclusively for charging a photoconductive element in a liquid electro-photograph (LEP) image-forming apparatus. The charge roller includes a cured composition of an aromatic diisocyanate, a polycarbonate polyester polyol, a matte agent, a surface energy modifier, and a conductive agent.

Abstract: The present disclosure discloses a charge roller (1) particularly but not exclusively for charging a photoconductor in a liquid electro-photograph (LEP) image-forming apparatus. The charge roller includes a cured composition of an epichlorohydrin/ethylene oxide/allyl glycidyl ether terpolymer, a lithium salt and carbon black.

Abstract: The present disclosure discloses a new charge roller particularly but not exclusively for charging a photoconductive element in a liquid electro-photograph (LEP) image-forming apparatus. The charge roller includes a cured composition of an aromatic diisocyanate, a polycarbonate polyester polyol, a matte agent, a surface energy modifier, and a conductive agent.

Abstract: A printer includes a surface configured to carry an electrostatic charge and a printing material forming an image, a transfer member configured to carry printing material from the surface to media and a heater external to the transfer member. The heater is configured to heat printing material being carried by the transfer member.

Abstract: A thermal ink-jet pen cartridge having a rigid external frame member is fabricated from a rigid engineering plastic and an interior frame structure is attached thereto, formed of a softer, more ductile plastic material than the engineering plastic. An ink reservoir is defined by the interior structure and a pair of flexible bag membranes formed of a plastic material impervious to the ink and compatible with the interior member material, allowing the membranes to be joined to the interior member to form a leak-proof joint. The external structure has locking features formed into an interior surface. When the interior member is injection molded to the external member, the molten material flows into and around the locking features, securing the interior member to the external member and resisting the shrinkage forces as the molten material cools. The ink reservoir is filled through a fill port passageway extending through the external frame member and the inner member.

Abstract: Antistatic polymer blend compositions comprise an ABS graft copolymer, a copolymer of an epihalohydrin and a copolymerizable monomer having an oxirane group, and a surfactant.