摘要:
Methods of controllably ejecting liquid from a thermal inkjet printhead. A first pulse set sufficient to form a bubble to eject a drop of a liquid having a polymer phase dispersed in a colloidal suspension is applied to a firing resistor. The first pulse set forms a polymer residue on the firing resistor. After the first pulse set and before a collapse of the bubble, a second pulse insufficient to eject a drop of the liquid is applied to the firing resistor. The second pulse facilitates removal of at least a portion of the residue from the firing resistor.
摘要:
A method of formulating a latex ink composition for a specific application temperature can include the steps of determining an application temperature for the latex ink composition; choosing at least one polar monomer having a dielectric constant of at least about 3.1; synthesizing latex particulates using the at least one polar monomer; admixing the latex particulates with a colorant, in a liquid vehicle, to form the latex ink composition; where the latex particulates are film forming at or below the application temperature, and the Tg of the latex particulates is no more than about 15° C. less than the application temperature.
摘要:
A fluid-ejection device includes a handheld and/or mountable enclosure, a removable tip having a fluid-ejection mechanism, a first fitting extending from the enclosure and receptive to placement of the removable tip thereon, and a controller situated within the enclosure to cause the removable tip to eject the fluid. The fluid-ejection device may also include tip-extension assembly having an electrical cable connecting to the controller and having a second fitting receptive to placement of the removable tip thereon. The electrical cable permits the removable tip to be located substantially independently of the enclosure. The fluid-ejection device may further include tubings fluidically couplable with the removable tip through at least one of the first and second fittings to provide fluid to the removable tip and to regulate backpressure of the fluid within the removable tip.
摘要:
The present disclosure provides ink-jet inks and associated methods. In one example, an ink jet ink can comprise an ink vehicle, a wax emulsion, and a latex particulate. The latex particulate can comprise multiple intermingled discrete polymer strands, including: a low Tg polymer strand having a Tg below 50° C. and a high Tg polymer strand having a Tg at 50° C. or above. Additionally, the Tg of the high Tg polymer strand can be at least 50° C. greater than the Tg of the low Tg polymer strand.
摘要:
A method of formulating a latex ink composition for a specific application temperature can include the steps of determining an application temperature for the latex ink composition; choosing at least one polar monomer having a dielectric constant of at least about 3.1; synthesizing latex particulates using the at least one polar monomer; admixing the latex particulates with a colorant, in a liquid vehicle, to form the latex ink composition; where the latex particulates are film forming at or below the application temperature, and the Tg of the latex particulates is no more than about 15° C. less than the application temperature.
摘要:
A fluid-ejection device includes a handheld and/or mountable enclosure, a removable tip having a fluid-ejection mechanism, a first fitting extending from the enclosure and receptive to placement of the removable tip thereon, and a controller situated within the enclosure to cause the removable tip to eject the fluid. The fluid-ejection device may also include tip-extension assembly having an electrical cable connecting to the controller and having a second fitting receptive to placement of the removable tip thereon. The electrical cable permits the removable tip to be located substantially independently of the enclosure. The fluid-ejection device may further include tubings fluidically couplable with the removable tip through at least one of the first and second fittings to provide fluid to the removable tip and to regulate backpressure of the fluid within the removable tip.