Abstract: Leveling of amorphous nickel-phosphorus electroplating is achieved by the combined synergistic action of a class II brightener and an organic acid having the formulaR--COOHwherein R is hydrogen, alkyl having 1-5 carbon atoms, NH.sub.2 CH.sub.2 --, CH.sub.3 CHOH--, HOCH.sub.2 --, or ClCH.sub.2 --. The bright, leveled, amorphous nickel-phosphorus coating may be made brighter by overplating with chromium, or other metals, to produce an object (such as cutlery, watch bezels and the like) having the desired properties.

Abstract: The individual elements of an elongated array of fluid jet orifices are independently positioned with respect to the individual elements of a second elongated array of individual charging electrodes thus relaxing critical mechanical manufacture and assembly tolerances therebetween. The number of fluid jet orifices is substantially greater than the number of independent charging electrodes so as to permit this independent positioning and the enhanced printing resolution of the apparatus is made possible primarily by the lesser density of individual electrodes in the electrode array.

Abstract: Amorphous iron-phosphorus electroforms may be fabricated electrolytically from a plating bath which contains at least one compound from which iron can be electrolytically deposited, at least one compound which serves as a source of phosphorus such as hypophosphorous acid, and at least one compound selected from the group consisting of glycine, .beta.-alanine, DL-alanine, and succinic acid. The electroforms can be fabricated over a very wide current density range. The stress in the plating can advantageously be further lowered by including in the bath at least one compound which serves as a source of sulfur, such as naphthalene trisulfonic acid or ferrous sulfate.

Abstract: Improved orifice plates such as, fluid jet orifice plates, photoetching masks or the like, include a substrate of highly corrosion resistant metal and a layer of an amorphous metal alloy, such as, an amorphous nickel-phosphorus alloy or an amorphous cobalt phosphorus alloy, the alloy layer and substrate together defining a predetermined array of openings therein.

Abstract: Liquid jet printer apparatus and method includes the purposeful addition of random acoustic vibrations to the system so as to reduce adverse printing effects otherwise caused by standing acoustic waves along the length of an orifice array. As a result, a longer cross-machine dimension for the printer orifice array is made practical as may be required, for example, for some textile applications.

Abstract: A duplex printing arrangement is provided for printing on both sides of a plurality of rectangular sheets of paper, each of the sheets having a pair of parallel opposite edges which are shorter than the pair of edges perpendicular thereto. Each of the sheets is transported past a printer in a direction parallel to the longer pair of the edges of the sheet. The sheets are printed on a first side as they are moved past the printer with a first edge of the pair of shorter edges being the leading edge. The sheets are thereafter turned end-for-end and moved past the printer for printing a second side of each of the sheets, with the second printing pass being such that the first edge of each of the sheets is again the leading edge.

Abstract: A paper handling system capable of providing a single or multiple pass of a printing medium by an ink jet printing head for the reproduction of original documents utilizes an endless conveyor belt to support the printing medium. The belt can be driven both forwardly and in reverse to cycle the printing medium under a printing head which prints tracks of information onto the medium. After each cycle, the printing head is advanced in a direction transverse to the motion of the printing medium until complete coverage of the printing medium is achieved. Either an interlace or band printing scheme can be used.

Abstract: An ink jet printer for printing an image on an intermittently moving print web includes a print head means for generating a number of ink jet drop streams which are directed at the web. Each of the streams provide for printing along an associated print line on the web, with the spacing in the direction of web movement between adjacent drop streams being an integer multiple of the width of a print line. This integer multiple is chosen to have no prime factors greater than unity in common with the number of jets which are generated by the print head means. The print web is moved intermittently past the print head means by a distance equal to the product of the width of a print line times the number of jet streams which are generated by the print head means. The print head means is moved transversely across the print web after each intermittent movement of the print web such that a number of print lines across the print web are serviced.

Abstract: A spirally interlacing jet drop recorder prints gray tones on a recording sheet mounted upon a rotating drum. The number of jets and the jet spacing is selected in such a manner as to facilitate time sharing of a matrix pattern memory by control circuits controlling operation of each of the jets. Matrices representing the gray levels to be produced are progressively printed from column to column by different ones of the array of jets.

Abstract: A dot matrix copying device includes optical rectification apparatus comprising storage means for storing image information in dot matrix form and means for transferring the stored information to a dot matrix print head. The image information is derived by simultaneously scanning an original document and an optical grating positioned adjacent thereto and directing the scanned scene toward an array of photosensing elements, one of which is positioned to view the optical grating. The optical data so derived is stored in the storage means under timing control of the photosensing element which views the optical grating.

Abstract: A jet drop recorder has a plurality of print heads, which print contiguous bands of graphic matter upon a sheet of printing material mounted on a rotary support. Each print head projects a row of spaced jets toward the printing sheet, and the jets print non-contiguous spiral tracks on the sheet. The individual jets are so spaced relative to the track width that the combination of paper rotation and advancing movement of the print heads causes side-by-side overlapping or interlacing of the spiral tracks. Thus each print head prints a steadily widening solid band. The heads each have the same number of jets and the same jet spacing so as to achieve identical track interlacing patterns. The distance between the print heads is adjusted such that the full width printed bands interlace at their edges. This prevents printing of an unsightly seam along adjoining boundaries of two adjacent bands.