摘要:
A self-cleaning printer includes a print head having a surface that is susceptible to a contaminate build up. A cleaning liquid containing a concentration of macroscopic cleaning particles is flowed in frictive contact with the contaminate such that a combined effect of frictive force and hydrodynamic shearing force acting on the contaminate effectively removes the contaminate from the surface. Preferably, the cleaning particles are adapted to attach to the contaminate. They may include polymeric beads such as polystyrene spheres. The cleaning particles preferably have surfaces to which polymeric chains are attached, the polymeric chains having end groups which adhere to the contaminate.
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; including an air supply device and air plenum which are associated with each ink channel and 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 supply device to the air channel and into the air plenum to exert a pressure which causes the separation of the receiver from the print head.
摘要:
A method for forming an ink jet nozzle plate includes providing a structure having a top substrate layer, a bottom substrate layer, and a buried layer disposed between the top substrate layer and the bottom substrate layer; selectively etching the top substrate layer to form a plurality of spaced ink cavities in the top substrate layer exposing portions of the buried layer; removing by etching the bottom substrate layer and bonding a base having ink delivery channels over the top substrate layer, with at least one channel corresponding to each ink cavity to thereby form the ink jet nozzle plate; and providing a mask having a plurality of openings over the buried layer and etching through such mask openings through the buried layer to the ink cavities to provide at least one bore region corresponding to each ink cavity to provide ink ejection access to such ink cavities so that the buried layer has portions which overhang the ink cavity.
摘要:
A microfluidic printing apparatus including at least one ink reservoir; a structure defining a plurality of chambers arranged so that the chambers form an array with each chamber being arranged to form an ink pixel; a plurality of microchannels connecting the reservoir to a chamber; a plurality of microfluidic pumps each being associated with a single microchannel for supplying ink from an ink reservoir through a microchannel for delivery to a particular chamber; and a structure for controlling the starting times of the microfluidic pumps and the time of separation of the receiver from the ink chambers so that the correct amount of ink is delivered from each chamber to each pixel on the receiver.
摘要:
A camera and film for recording overlapping visual images and digital data is disclosed. The camera includes a structure for recording the region of a film with visible light to record a visible image in one or more record layer(s) sensitized to visible light; and a structure for recording in the region of the film with non-visible light to record digital data in one or more record layer(s) sensitized to non-visible light, whereby overlapping visual and digital data images are recorded in the same region.
摘要:
A charge coupled device having a layer of a semiconductor material on a surface of a substrate body of a semiconductor material. The layer is of a material which can be epitaxially deposited on the body with good crystalline quality. The material of the layer has a conduction band and/or valence band which is different from that of the body so as to provide a discontinuity in the energy level of the conduction band and/or valence band at the junction of the layer and the body during the operation of the charge coupled device. At least one electrode is over and insulated from the layer. The discontinuity in the conduction band and/or valence band creates a well in which photogenerated charge is collected.
摘要:
There is disclosed a process and the resulting semiconductor wafer wherein the backside of the wafer has applied thereto a layer of polysilicon. Portions of this layer are exposed to an energy beam to recrystallize them into single crystal silicon fused to and extending from the underlying wafer. The recrystallized portions contact adjacent portions of the polysilicon layer, thereby providing a path for impurities migrating from the wafer to the polysilicon.
摘要:
A device and a method of controlling fluid flow are provided. The method includes providing a moving fluid including a fluid flow characteristic; providing a fluid control device including a fluid control surface, the fluid control surface including a pattern that guides the fluid; causing the fluid to contact the fluid control surface of the fluid control device; and causing the fluid to interact with the fluid control surface of the fluid control device by guiding the fluid using the pattern of the fluid control surface while the fluid is in contact with the pattern of the fluid control device such that the fluid flow characteristic of the fluid after interacting with the fluid control surface of the fluid control device is different from the fluid flow characteristic of the fluid before interaction with the fluid control surface of the fluid control device.
摘要:
A printer includes a printhead and a source of liquid. The printhead includes a nozzle bore. The liquid is under pressure sufficient to eject a column of the liquid through the nozzle bore. The liquid has a temperature. A thermal modulator is associated with the nozzle bore. The thermal modulator is operable to transiently lower the temperature of the liquid as the liquid is ejected through the nozzle bore.
摘要:
A method of providing connectivity to a microsized device, the method includes the steps of providing an ablative base material having at least a top surface; providing a die having a first and second surface and having bonding pads at least upon the first surface; placing the die with the at least first surface of the die contacting the at least first surface of the ablative base material; and ablating a channel in the ablative material proximate to the die.