Abstract: A method, apparatus, and system in which a demarcation point cabinet to provide network connectivity between networks is placed into a cage mesh panel design for a communication facility structure, wherein the demarcation point comprises a demarcation point cabinet placed in the non-moving, stationary portion of the cage mesh panel design for the communication facility structure, such as an Internet Exchange (IX), Peering Point, Data Center, or Co-location center, providing security to the customers using the communication facility structure, frees up square footage space inside the cage for customers to put their own equipment and wiring, and adds security because demarcation point cabinet is constructed with physical barriers to prevent physical tampering or access from a front side of the demarcation point cabinet to the back side of the demarcation point cabinet.

Abstract: A power control system in a thermal ink-jet printer facilitates practically instantaneous voltage changes to a heating element. A first set of selectably-actuable voltage lines is operatively connected in parallel to a first terminal of the heating element, each line having associated therewith a predetermined voltage output. A second set of selectably-actuable voltage lines is operatively connected in parallel to a second terminal of the heating element, each line having associated therewith a predetermined voltage output. One of the first set of selectably-actuable voltage lines and one of the second set of selectably-actuable voltage lines are activated as required.

Abstract: Data relating to the performance of an individual ink-jet printhead is stored in an electrically-readable form on a silicon substrate forming an essential part of the printhead. A template of electrically-detectable structure is created on the substrate at manufacture, and then portions of the structure are removed in accordance with the data desired to be stored. In one embodiment, the digital performance data may be encoded and also read out in serial form using a shift register on the chip.

Abstract: A thermal ink-jet printhead comprises a substrate having a plurality of heating elements defined thereon. A thermistor, disposed on the substrate, includes a conductor loop which does not encompass the heating elements on the substrate. The configuration of the thermistor significantly reduces both electromagnetic and capacitance interference caused by the heating elements.

Abstract: Highlighting a selected area of a holographic display indirectly by selectively repositioning a small lens within the hologram illumination beam.

Abstract: A thermally activated image bar is disclosed for use in an electrophotographic printer. The image bar comprises at least one transparent prism having a surface closely spaced and parallel with a confronting surface of a transparent member containing an array of transparent heating elements and addressing electrodes thereon to form a gap therebetween. A liquid medium also capable of transmitting light and having an index of refraction matched to that of at least one prism is positioned in the gap. An optical shield bonded to one of the confronting surfaces has at least one aperture aligned with the heating elements to improve optical contrast. This assembly is hermetically sealed within a transparent housing and means are optionally provided to circulate the liquid medium. The heating elements are selectively energized in response to digitized data signals for pulse heating the portions of the liquid medium in the vicinity thereof to form momentary bubbles.

Abstract: An ink jet printhead composed of substantially two identical parts and method of batch fabricating the parts. Each part has V-grooves anisotropically etched between a linear array of heating elements having selectively addressable electrodes which are parallel to each other. The grooved structures of the parts permit them to be mated face-to-face, so that they are automatically self-aligned by the inter-meshing of the lands containing the heating elements on one part with the grooves of the other part. A pair of parts may be used as a printhead for a carriage type ink jet printer or a plurality of parts may be assembled for a pagewidth printer. The pagewidth printhead is assembled by offsetting the first two parts a selected number of grooves when they are mated so that the subsequently added adjacent parts abut each other and yet are self-aligned with the confronting parts.

Abstract: A photolithographic method for fabricating thin film transistors and thin film transistor arrays in which the contamination vulnerable semiconductor-insulator interfaces are formed in a single vacuum pump-down operation. To minimize step coverage problems, quasi-planar construction is employed to provide a planar substructure for receipt of the deposited thin semiconductor layer.

Abstract: In the formation of a thin film device, integrity of the semiconductor-insulator and semiconductor-conductor interfaces is preserved by depositing layers of insulator, semiconductor, and conductor in successive sequence under continuous vacuum. In a preferred embodiment, the method minimizes contamination exposure of the critical interfaces between semiconductor and gate insulator and semiconductor and source-drain contacts of a thin film transistor.

Abstract: A planar thin film transistor is described wherein each element of the transistor structure is disposed in a planar relationship with respect to the next adjacent layer. The method of manufacture generally includes the steps of depositing one of the elemental members of a thin film transistor structure and filling in the valleys between the elemental structure with an insulating material to form a planar surface which, in turn, forms the surface upon which the next planar layer is formed.