Abstract: A method for fabricating high resolution magnetic printing head wherein a comb-like magnetically permeable member is formed by electrodeposition. The magnetic printing head, comprising a substrate with an elongated gap across which conductive lines pass, is formed by electrodeposition of magnetically permeable material between adjacent conductive lines positioned on the substrate. A special jig facilitates electrodeposition by ensuring constant flow of electrolyte through the gap and between the conductive lines during the plating process. A single substrate with its associated gap and conductive lines is employed in certain applications. However, a dual or triple substrate configuration, wherein each substrate and respective conductive lines are aligned with each other, is preferred in a coincident current printing head.

Abstract: A SAW filter assembly module comprising a plurality of series in-line SAW filter devices and effective to provide substantial isolation of output from input of the module. Separate isolated conductive ground areas are applied to the surface of an insulative substrate upon which the SAW filter devices are placed with a portion of certain areas extending to a terminal side of the substrate and each SAW device is electrically connected to a respective conductive ground area. A separate inter-SAW ground area is provided between each set of device ground areas. A conductive input area of a first SAW filter is located most distant from the conductive output area of a subsequent SAW filter with the plurality of conductive ground areas located therebetween to increase selectivity. A conductive shield is secured to and electrically connected to a ground area between the SAW filter devices and is positioned to block radiative signals between the devices.

Abstract: A high resolution magnetic printing head possesses a comb-like magnetically permeable member formed by electrodeposition. A magnetic printing head comprising a substrate with an elongated gap across which conductive lines pass is formed by electrodeposition of magnetically permeable material between adjacent wires on a substrate. A special jig facilitates electrodeposition with a constant flow of electrolyte through the gap and between the wires during the plating process. A single such substrate with its associated gap and conductive wires is employed in certain applications, however, a dual or triple substrate configuration with each substrate and its associated set of wires being aligned with each other substrate and set of wires is preferred for use in a coincident current printing head.