Abstract:
A thermal actuator for a micro-electromechanical device such as an inkjet printer nozzle. The actuator has: (a) a base element; (b) a cantilevered element including a thermo-mechanical bender portion extending from the base element and a free end tip residing in a first position, the thermo-mechanical bender portion having a base end adjacent the base element and a free end adjacent the free end tip; and (c) apparatus adapted to apply a heat pulse having a spatial thermal pattern directly to the thermo-mechanical bender portion, causing the deflection of the free end tip of the cantilevered element to a second position, and wherein said spatial thermal pattern results in a substantially greater temperature increase of the base end than the free end of the thermo-mechanical bender portion. By designing the actuator such that the material with a high coefficient of thermal expansion heats with a predetermined spatial thermal pattern concentrated toward the base of the cantilever beam, the paddle end movement is greater and faster. The ink above the paddle is given the necessary pressure such that the ink in the bulging meniscus has sufficient momentum to break the surface tension and form a drop.
Abstract:
A pagewidth color printhead assembly includes an ink distribution arrangement. A plurality of printhead chips is mounted on the ink distribution arrangement to span a print medium feed path. Each printhead chip includes a substrate that defines a plurality of ink supply channels. A plurality of ink-ejecting nozzles is arranged on the substrate in fluid communication with the ink supply channels. The nozzles are arranged in groups, with each group of nozzles being in fluid communication with a respective ink supply channel and the groups of nozzles being arranged in at least three rows, each row of nozzles receiving ink of the same color.
Abstract:
A process for modifying the surface of a substrate containing a polymeric material by contacting the surface with the modifying agent to bond the modifying agent to the surface the process comprising providing a solution of the modifying agent in a solvent and subjecting the solution of the modifying agent to a zone of elevated temperature to vaporize the solvent and provide diffuse contact between the modifying agent and the surface of the substrate.
Abstract:
A method of fabricating an inkjet printhead chip which includes the step of fabricating drive circuitry layers on a substrate with a CMOS fabrication process. A first sacrificial layer is deposited on the substrate. A heater layer for heating circuits is deposited on the first sacrificial layer and etched to form the heating circuits. A resiliently flexible layer of dielectric material is deposited on the substrate to cover the heater layer and etched to form actuators and ink ejection members. A second sacrificial layer is deposited on the substrate to cover the actuators and the ink ejection members and etched to define deposition zones for the nozzle chamber walls and the roof walls. A layer of a structural material is deposited on the second sacrificial layer to form the nozzle chamber walls and the roof walls. The sacrificial layers are finally etched away.
Abstract:
A method of electrostatically coating a substrate including the steps of applying a surface treatment composition to the substrate to induce conductivity, applying a charge to the substrate after applying the surface treatment and electrostatically applying a coating to the substrate, and articles made therefrom. The surface treatment composition includes a halogen, halogen salt, or halogen complex.
Abstract:
The present invention is to provide a method of enhancement of electrical conductivity for conductive polymer by use of field effect control, wherein on the substrate, whose surface was treated with a field, was coated by a containing monomer or oligomer solution of conductive polymer, through a field mechanism a monomer or oligomer of conductive polymer can demonstrate the sequential order molecular structure layer on the substrate, on this molecular structure layer was coated by an available amount of oxidant to proceed the polymerization, it was subjected to a field during polymerization to form 3-dimensional order stacking structure in order to increase the functional characteristic and electrical conductivity for conductive polymer.
Abstract:
An inkjet printhead is formed on a silicon wafer and includes a number of nozzle devices, each having a nozzle chamber and an aperture through which ink from the nozzle chamber is ejected. Each nozzle device also has an actuator for applying pressure to ink within the nozzle chamber to cause ejection of an ink drop through the aperture and drive circuitry for controlling the actuator. The drive circuitry and the actuator share area of the silicon wafer to increase manufacturing yield.
Abstract:
The method for making a multilayer composite having one or more colors brings together a number of acrylic layers, which are partially cured in a first step and completely cured in a second step. The curing takes place with actinic radiation, such as accelerated electrons, UV radiation or X-ray radiation, the curing unit operating with different dosage rates during the two steps. The curable acrylic layers are applied to the respective supporting layers by screen printing or stencil printing, or else may be applied to the supporting layers by casting or with the aid of printing rollers.
Abstract:
Organopolysiloxane containing compositions are prepared by mixing an organopolysiloxane containing an aminoalkyl group, an organopolysiloxane containing a fluoroalkyl group, and optionally, organopolysiloxanes containing alkyl groups, together with water, or a water/acid mixture, or a water/acid/alcohol mixture, where the mixture is adjusted to have a pH in the range of 1-8, then removing the alcohol already present or formed during reaction.
Abstract:
An aqueous organopolysiloxane-containing composition comprising organopolysiloxanes of formula I: HO�Si(A) (CH.sub.3).sub.z (OH).sub.1-z O!.sub.a �Si(B) (R.sup.2).sub.y (OH).sub.1-y O!.sub.b �Si(C) (CH.sub.3)O!.sub.c �Si(D) (OH)O!.sub.d H.multidot.(HX).sub.e (I), wherein A is an aminoalkyl group of formula II: H.sub.2 N(CH.sub.2).sub.f (NH).sub.g (CH.sub.2).sub.h Si(OR).sub.3-z (CH.sub.3).sub.z (II), in which 0.ltorsim.f.ltorsim.6, g=0 if f=0 and g=1 if f>0, 0.ltorsim.h.ltorsim.6 and 0.ltorsim.z.ltorsim.1; B is a fluoroalkyl group of formula III: R.sup.1 --Y--(CH.sub.2).sub.2 Si(R.sup.2)y(OR).sub.3-y (III), wherein R.sup.1 is a mono-, oligo- or perfluorinated alkyl group having 1-9 C atoms, or a mono-, oligo- or perfluorinated aryl group, Y is a CH.sub.2, O or S group, R.sup.2 is a linear, branched or cyclic alkyl group having 1-8 C atoms or an aryl group and 0.ltorsim.y.ltorsim.1; C is an alkyl group of formula IV: R.sup.3 --Si(CH.sub.3) (OR).sub.2 (IV), and D is an alkyl group of formula V: R.sup.3 --Si(OR).sub.3 (V), wherein R.sup.3, in each case is identical or different, and is a linear, branched or cyclic alkyl group having 1-8 C atoms, and R, in each case is identical or different, and is a linear, branched or cyclic alkyl group having 1-8 C atoms or an aryl group; and HX is an acid, in which X is an inorganic or organic acid radical, and 0.ltorsim.y.ltorsim.1, 0.ltorsim.z.ltorsim.1, a>0, b>0, c.gtorsim.0, d.gtorsim.0, e.gtorsim.0 and (a+b+c+d).gtorsim.2, the composition being essentially free from organic solvents, having a flash point of more than 70.degree. C. and liberating essentially no alcohols by hydrolysis on dilution with water.