57 results about "Bleeding control" patented technology

The ink set of this invention comprises an anionic black pigmented ink and at least one color ink containing a dye or pigment colorant. The performance of these ink sets is improved by the addition of specific cationic surfactant or cationic (quaternary) salts which interact with the anionic black pigmented ink to provide improved black to color bleed control.

The ink of the invention comprises a vehicle and a macromolecular chromophore colorant. The colorant is a water-insoluble pigment that has been chemically modified to be water dispersible by addition of functional groups to the surface of the pigment resulting in water dispersible colorant particles. The performance of these pigments is improved by the addition of specific functional groups which provide improved black to color bleed control and high waterfastness.

The ink set of this invention comprises at least two inks, one of which contains a pH sensitive polymer and pigment colorant with dispersant. A second ink is provided which comprises incompatible inorganic or organic salts or has an appropriate pH. The polymer precipitates onto a medium upon contact with the second ink, thereby providing improved bleed control.

In accordance with the invention inks suitable for use in ink-jet printers and method for using the same are provided. More particularly, inks comprising the present dye set exhibits excellent color performance and lightfastness across a range of media. Furthermore, the dye set enables good reliability in an environment having a relatively high concentration of precipitating agents. This reliability enables the use of precipitation bleed control mechanisms. More specifically, a specific dye set for formulating the yellow, magenta, and cyan inks is disclosed, comprising Acid Yellow 17 and a yellow dye according to Formula I; Acid Red 52 and a magenta dye according to Formula II; and Direct Blue 199 and Acid Blue 9; respectively.

The invention provides a silicon-controlled dimming LED drive circuit. The source electrode of a bleeding switch MOS transistor is connected with the circuit ground through a resistor, the drain electrode of the bleeding switch MOS transistor is connected to the voltage signal end of a bus through a bleeding resistor, and the grid electrode of the bleeding switch MOS transistor is connected with the circuit ground through a second capacitor and is also connected with the output end of a first switch of a bleeding control module through a resistor. A first sampling resistor is coupled between the bleeding switch MOS transistor and the first input end of a comparator of the bleeding control module so as to obtain a first sampling voltage signal. The bleeding control module receives the first sampling voltage signal through the first input end of the comparator, compares the first sampling voltage signal with the voltage signal of a reference voltage source and controls switching-on and switching-off of the first switch, so that the bleeding switch MOS transistor is driven to control the minimum input current of the LED drive circuit, and therefore the holding current of a silicon-controlled dimmer is controlled. Through the intelligent control by the bleeding control module, the input current of the LED drive circuit can meet the requirement for the holding current of the silicon-controlled dimmer.

The use of a styrene-maleic anhydride copolymer in self-dispersed black pigment inks provides a means of achieving black-to-color bleed control against color.

An engine bleed control system for a gas turbine engine of an aircraft is provided. The engine bleed control system includes a multi-tap bleed array including engine bleed taps coupled to a compressor source of a lower pressure compressor section before a highest pressure compressor section of the gas turbine engine. A highest stage of the engine bleed taps has a maximum bleed temperature below an auto-ignition point of a fuel-air mixture of the aircraft at idle engine power at a maximum aircraft altitude and a pressure suitable for pressurizing the aircraft at the maximum aircraft altitude. The engine bleed control system also includes a plurality of valves operable to extract bleed air from each of the engine bleed taps. A controller is operable to selectively open and close each of the valves based on a bleed air demand and control delivery of the bleed air to an aircraft use.

The invention discloses a test device of tire-bursting or rapid air leakage for an automobile. N numbered air-bleed holes are drilled on a rim and air in tires is communicated with an air-bleed control valve by respective gas-guide tube through the N numbered air-bleed holes. A control valve base at one side of a control cavity B is provided with a control valve body, an air-bleed cavity body and an air-bleed cavity cover; the control valve body is internally provided with I-shaped slide blocks and the control valve body positioned among the slide blocks is provided with a air leakage port; one side of the slide block is communicated with the control cavity B and the other side thereof is communicated with the control cavity A; the air leakage cavity body is provided with N-1 numbered air leakage holes which are respectively communicated with N-1 numbered gas-guide tubes; the control valve base is provided with the air-bleed holes in a radial direction, one end of which is communicated with the n air-guide tube and the other end of which is communicated with the control cavity B by a two-phase three-way magnetic valve; and the magnetic valve realizes communication between the control cavity B and the n air-guide tube or between the control cavity B and atmosphere and is connected with a remote control switch. The invention adopts the remote control switch and the two-phase three-way magnetic valve with small flow to control opening/closing of big flow, thereby finishing the test of the tire-bursting or the rapid air leakage for the automobile.

An ink-jet ink which includes a liquid vehicle and a polymer-dispersed pigment dispersed in the liquid vehicle is disclosed and described. More specifically, the polymer-dispersed pigment can include a pigment encapsulated with a polymer having hydrophilic and hydrophobic moieties. The polymer can be a polymerization product of at least a first monomer having a hydrophilic group, and a second monomer having a hydrophobic group. Further, the polymer can be configured such that the polymer-dispersed pigment is stable in the liquid vehicle at a pH of from about 5.5 to about 8.5. Such polymer-dispersed pigments allow for formation of ink-jet inks with improved options for bleed control mechanisms and increased reliability of ink-jet architecture.

Disclosed is an aqueous inkjet ink comprising colorant and a bleed control agent comprised of 3-(2-methoxyphenoxy)-1-2-propanediol. The ink advantageously exhibits reduced intercolor bleed when printed, for example, on plain paper.

The invention discloses an engine air bleed valve control device and an engine control system. The engine air bleed valve control device comprises a rotation speed sensor, an electronic controller and an air bleed control valve. The electronic controller is connected with the air bleed electromagnetic valve. The air bleed electromagnetic valve is connected with an air bleed valve. The rotation speed sensor is used for sensing the rotation speed of an engine. The electronic controller is connected with the rotation speed sensor and used for collecting the rotation speed of the engine so as to control the air bleed electromagnetic valve to be switched on according to the rotation speed of the engine so that the air bleed valve can be opened or control the air bleed electromagnetic valve to be switched off according to the rotation speed of the engine so that the air bleed valve can be closed. According to the engine air bleed valve control device and the engine control system, the technical problems that when a traditional mechanical hydraulic control mode is adopted, the structure is complex, an air bleed valve is prone to being affected by oil pressure fluctuation, and the opportunity for opening or closing the air bleed valve is difficult to adjust are solved, the structure is simple, and the control precision and the reliability are high.