摘要:
The present invention resides in a self-cleaning printer with a print head having an orifice plate defining an ink jet orifice, a cleaning orifice and a drain orifice. The orifice plate further defines an outer surface between the orifices. A source of pressurized cleaning fluid is connected to the cleaning orifice and a fluid return is connected to the drain orifice for storing used cleaning fluid. A cleaning surface is disposed adjacent to and separate from the outer surface to define a capillary fluid flow path from the cleaning orifice across the ink jet orifice and to the drain orifice. During cleaning, the source of pressurized cleaning fluid discharges a flow of a cleaning fluid into the capillary fluid flow path and pressurized cleaning fluid from the capillary flow path passes through the drain orifice and into the fluid return.
摘要:
A continuous ink jet apparatus is provided. The printhead includes a nozzle array with portions of the nozzle array defining a length dimension. A drop forming mechanism is positioned relative to the nozzle array. The drop forming mechanism is operable in a first state to form ink drops having a first volume travelling along a path and in a second state to form ink drops having a second volume travelling along the path. A system applies force to the ink drops travelling along the path. The force is applied in a direction such that the ink drops having the first volume diverge from the path and at least one of the ink drops having the first volume and the ink drops having the second volume are displaced relative to the length dimension.
摘要:
A pump(10) for pumping various primary fluids includes a body(100) having a primary fluid channel(110) defined therein, and a primary fluid supply is coupled to the primary fluid channel to supply a primary fluid to the primary fluid channel. A mechanism(130/132) is provided for introducing a secondary fluid to an interface region of the primary fluid channel to thereby define a fluid interface between the primary fluid and the secondary dry fluid in the interface region. An energy delivery(150/160) device delivers energy to the interface region to create a thermal gradient along the fluid interface. The thermal gradient results in a surface tension gradient along the interface. The primary fluid will move to compensate for the surface tension gradient.
摘要:
A method for forming an ink jet nozzle plate includes providing a buried layer over a bottom substrate layer; providing and patterning a top substrate layer over the buried layer and having openings having inclined walls; providing an ink jet nozzle plate layer over the patterned top substrate layer and into the openings formed in the patterned top substrate layer, the ink jet nozzle plate layer contacting the buried layer; attaching the ink jet nozzle plate layer to a base having ink delivery channels; removing by etching the bottom substrate layer; and providing bore regions into the ink jet nozzle plate layer with each bore region corresponding to a delivery channel.
摘要:
A method for forming an ink jet nozzle plate with ink jet nozzles, including providing a first mold formed with spaced-apart recesses; providing inlay material in the spaced-apart recesses; attaching a base to the inlay material; separating the first mold from the inlay material and the base, thereby forming a final mold having a plurality of inlay material protrusions over the base, the protrusions and base defining the shape and the size of the ink jet nozzles; providing plate forming material between the protrusions and over the base in the final mold; and releasing the plate forming material to form an ink jet nozzle plate having a plurality of ink jet nozzles.
摘要:
Apparatus for separating a receiver from a micro-fluidic contact print head after ink image pixels have been printed by the print head on the receiver, including a print head having a plurality of ink channels for delivering ink to the receiver when the receiver is in ink transfer contact with the print head; air plenums which are associated with each ink channel and a member defining an air channel for conducting air to the air plenum; and the apparatus is effective after the ink has been transferred from the plurality of ink channels to the receiver for causing air to be delivered from the air channel into the air plenum to exert a pressure which causes the separation of the receiver from the print head.
摘要:
A colorant transfer printhead for viewing or delivering color segments of ink to a receiver, including a plurality of color channels, having a structure for delivering ink color segments to the color channels. The colorant transfer printhead or transfers ink from the ink color segments in the color channels to the receiver in response to energy applied to the ink color segments to cause ink from such ink color segments to be transferred to the receiver.
摘要:
The chemical composition of each ejected droplet in an ink jet can be controlled so as to alter the color or color intensity of the droplet and thereby effect deposition of continuous-tone color images on suitable receiving media.
摘要:
A frame transfer image sensor having a lateral overflow drain and a structure for controlling the charge transfer to the drain during charge collection to improve exposure latitude.
摘要:
A printhead includes a nozzle and a jet control element. The jet control element includes a continuous heater element positioned to surround the nozzle and a plurality of three or more electrical contacts in electrical communication with the continuous heater element. The plurality of three or more electrical contacts define a plurality of three or more continuous heater element portions that are actuatable with sufficient independence so as to control jet steering. The number of the continuous heater element portions equals the number of electrical contacts.