Abstract:
A single use valve structured to allow only one fluid or gas or powder filling or extraction operation of a container such that neither a subsequent refilling nor a subsequent extraction operation can be performed. The single use valve may be used for extraction of ink from, or filling of ink to, a security ink container.
Abstract:
A printing system that comprises a media transport system for conveying a print media along a media path in a first direction. A plurality of print modules each spanning the print media path along a second direction. Each print module defines a major axis along the second direction. A minor axis that aligns along the first direction and an intermediate axis with each of the print modules. A printhead array that includes printheads spaced from the media path. A fluid regulator portion configured to regulate a fluid pressure in the printhead portion. Each of the print modules are configured to be installed into and removed from the printing system as an integral unit.
Abstract:
A liquid droplet discharge apparatus includes a head member. The head member is provided with a nozzle surface, a plurality of nozzle arrays including a first nozzle array and a second nozzle array is arranged on the nozzle surface, the nozzle array includes a plurality of nozzle holes which are arranged in a predetermined pattern, the first nozzle array discharges a pigment ink which contains water and a pigment, the second nozzle array discharges a dye ink which contains water and a dye, and the relationship between the conductivity [E1 (mS/cm)] of the pigment ink and the conductivity [E2 (mS/cm)] of the dye ink is expressed by the formula 0
Abstract:
A printing arrangement has a modular printhead assembly with a plurality of elongate printhead modules fast with an elongate chassis. An ink supply assembly has a number of ink reservoirs with respective ink supply devices each having two parts, namely a first part with a plurality of collars and the second part defining a number of ink chambers. Each ink chamber is configured to contain ink of a particular color and is in fluid communication with a respective ink channel of one ink reservoir via one collar.
Abstract:
A printer comprising: an inkjet printhead having an ink inlet, an ink outlet and a plurality of nozzles; an ink chamber having an outlet port; an upstream ink line providing fluid communication between the outlet port and the ink inlet; a reversible air pump having a pump outlet communicating with a headspace in the ink chamber, the pump being configured to positively pressurize the headspace during a printhead priming operation or negatively pressurize the headspace during a printhead depriming operation; and a downstream ink line connected to the ink outlet, the downstream ink line being in fluid communication with a pump inlet so as to effect cooperative pulling and pushing of ink through the printhead during the priming and depriming operations.
Abstract:
A printer comprising: an inkjet printhead having an ink inlet, an ink outlet and a plurality of nozzles; an ink supply system for supplying ink to the inkjet printhead at a predetermined hydrostatic pressure, the ink supply system comprising: a pressure-regulating chamber having an outlet port connected to the ink inlet of the printhead, the chamber comprising a float valve configured for maintaining a predetermined level of ink in the chamber, the level of ink controlling the hydrostatic pressure; and an ink reservoir connected to an inlet port of the pressure-regulating chamber, the ink reservoir being positioned above the predetermined level of ink.
Abstract:
A print head unit has an elongate print head integrated circuit. An ink supply unit defines an elongate print head slot in which the print head integrated circuit is received. Ink supply vias supply ink to the print head slot. Longitudinally extending channels are in fluid communication with the print head integrated circuit through the vias and longitudinally extending aperture slots provide for the snap-in insertion of rollers for the transport of print media operatively with respect to the print head integrated circuit during printing.
Abstract:
One method of ink formulation may include providing a shipping material in a reservoir of a printing mechanism, placing a concentrated ink in communication with the reservoir, and mixing the shipping material and the concentrated ink together to create a print-ready ink.
Abstract:
One method of ink formulation may include providing a shipping material in a reservoir of a printing mechanism, placing a concentrated ink in communication with the reservoir, and mixing the shipping material and the concentrated ink together to create a print-ready ink.
Abstract:
A method of depriming a printhead. The method comprises the steps of: (i) providing a printhead having a plurality of nozzles for ejection of ink, an ink inlet and an ink outlet; (ii) providing an ink chamber having an outlet port connected to the ink inlet via an upstream ink line, the ink chamber having an inlet port controlled by a valve; (iii) depriming the printhead by pumping ink from a downstream ink line connected to the ink outlet, through the printhead and into the ink chamber; and (iv) closing the valve when a level of ink in the chamber reaches a predetermined first level, thereby isolating the ink chamber from an ink reservoir in fluid communication with the inlet port.