Droplet deposition apparatus comprising an array of fluid chambers defined by a pair of opposing chamber walls, and in fluid communication with a nozzle for droplet ejection therefrom; a cover member is joined to the edges of the chamber walls and thus seals one side of the chambers. The cover member has a ratio of cover thickness to chamber wall separation less than or equal to 1:1.

Droplet deposition apparatus

Fixing device includes a first cylindrical rotating member having an inner peripheral surface and an outer peripheral surface; a second rotating member which is brought into contact with the first rotating member; magnetic field generation units for generating a magnetic field, the magnetic field generation units being provided at a predetermined distance from the inner or outer peripheral surface of the first rotating member; and a heat generation member that generates heat by a magnetic field, the heat generation member being provided so as to be opposed to the magnetic field generation units across the first rotating member and to be in contact with the first rotating member, having a thickness larger than a skin depth, and containing a magnetic metal material.

Fixing device, and image forming apparatus

Systems and methods for selectably controlling and customizing source access to a network, where the source is associated with a source computer, and wherein the source computer has transparent access to the network via a gateway device and no configuration software need be installed on the source computer to access the network. A user may be prevented access from a particular destination or site based upon the user's authorization while being permitted to access to other sites that the method and system deems accessible. The method and system can identify a source without that source's knowledge, and can access customizable access rights corresponding to that source in a source profile database. The source profile database can be a remote authentication dial-in user service (RADIUS) or a lightweight directory access protocol (LDAP) database. The method and system use source profiles within the source profile database to dynamically authorize source access to networks and destinations via networks.

Systems and Methods for Providing Dynamic Network Authorization, Authentication and Accounting

Systems and methods for managing and providing content and services on a network system. Aspects of the invention include location-based determination of network content and services that may be provided to client computers. Other aspects of the invention include authorization and authentication components that determine access rights of client computers. Additional aspects include systems and methods for redirecting client computers to different network content. The disclosed systems and methods may be used in numerous network system applications.

Systems and methods for providing content and services on a network system

An inkjet printhead having a series of nozzles for the ejection of ink wherein each said nozzle has a rim formed by the deposition of a rim material layer (42) over a sacrificial layer (41) and a subsequent planar removal of at least said rim material layer so as to form said nozzle rim.

Improvements relating to inkjet printers

The invention relates to improved nozzle plate designs for ink jet printers and to apparatus and methods for making the nozzle plates (10). The nozzle plates (10) of the invention are made from a polymeric material having a thickness sufficient to provide a plurality of flow features (12,14) and nozzle holes (16) aligned substantially along opposed edges of the nozzle plate (10) wherein the flow features (12,14) are ablated in the nozzle plates (10) with depths which provide decoupling of the flow features (12,14) from the nozzle holes (16) so that the flow features (12,14) and nozzle holes (16) can be independently designed in order to optimize the nozzle plate to provide improved performance.

Ink jet printhead nozzle plates

A nozzle plate for an ink jet print head and method therefor is provided. The nozzle plate has a polymeric layer, an adhesive layer attached to the polymeric layer defining a nozzle plate thickness and ablated portions of the polymeric layer and adhesive layer defining flow feature of the nozzle plate which contain ink flow channels, firing chambers, nozzle holes, an ink supply region and one or more projections of polymeric material in the ink supply region of the nozzle plate. The one or more projections are selected from the group consisting of an elongate portion of polymeric material having an ablated portion surrounding the elongate portion, partially ablated spaced elongate fingers having a height which is less than the thickness of the nozzle plate which are parallel to and offset from the ink flow channels, and a plurality of spaced projections having a height which is less than the thickness of the nozzle plate extending from the flow feature surface adjacent the ink flow channels having a spacing between adjacent projections which is sufficient to trap debris before the debris enters the ink flow channels to the firing chambers.

Ink jet printer nozzle plate having improved flow feature design and method of making nozzle plates

Improved methods for fabricating the ink feed slots in silicon substrate for use in thermal ink-jet print heads is disclosed. One method involves the partial anisotropic etching of an ink feed slot in a silicon substrate for use in aligning the electrical resistive elements on one surface of the substrate. Another embodiment involves laser drilling alignment holes and anisotropically etching the substrate. In both methods, at least one photoresist masking and development step is eliminated thereby reducing fabrication time and alignment difficulties for locating the feed slots relative to the electrical resistance elements and increasing product yield.

Fabrication of thermal ink-jet feed slots in a silicon substrate

A nozzle plate for an inkjet printer including a first nozzle array (51) having a plurality of nozzles (52a, 54a, 56a, 58a, 62a, 64a, 66a and 68a), each of which is positioned to correspond to a desired print location, with the print location of each of the nozzles of the first array being different from one another; and a second nozzle array having a plurality of nozzles (52b, 54b, 56b, 58b, 62b, 64b, 66b and 68b), each of which is positioned to correspond to a desired print location, with the print location of each of the nozzles of the second array corresponding to one of the print locations of the first array such that the first and second arrays each have one nozzle corresponding to each desired print location.

Nozzle array for printhead

A composite structure containing a nozzle layer and an adhesive layer is provided and the adhesive layer is coated with a polymeric sacrificial layer. The coated composite structure is laser ablated to form one or more nozzles in the structure and the sacrificial layer is removed. The sacrificial layer is preferably a water soluble polymer, such as polyvinyl alcohol or polyethylene oxide, which is removed by directing jets of water at the sacrificial layer until it is substantially removed from the adhesive layer.

Method of forming an inkjet printhead nozzle structure

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