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IBM Journal of Research and Development

Issue 4 • Date July 1991

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Displaying Results 1 - 7 of 7
  • Making negatives and plates for printing by electroerosion: Introduction and overview

    Publication Year: 1991, Page(s):458 - 465
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (724 KB)

    The most familiar electroerosion printers operate by removing the whitish or silvery aluminum overlayer from discrete areas of a special paper so as to reveal a black underlayer. The direct negative/direct plate (DNP) material described here is a new dual-function printing material which, when employed together with an electroerosion printer, allows direct generation of negatives or (short-run) of... View full abstract»

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  • Making negatives and plates for printing by electroerosion: I. Physical principles

    Publication Year: 1991, Page(s):466 - 488
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1952 KB)

    Electroerosion printing involves removal of the aluminum overlayer from selected areas of a black-coated paper. “Direct negatives” as well as “direct plates” for use in offset lithographic printing may also be generated by electroerosion if a clear polymer sheet is used as the substrate instead of paper, and the black base layer is omitted. If such a substrate is metall... View full abstract»

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  • Making negatives and plates for printing by electroerosion: II. Larger-scale fabrication and testing

    Publication Year: 1991, Page(s):489 - 511
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1969 KB)

    The principles of producing direct negatives and direct plates by electroerosion writing were given in Part 1 of the present series of papers. Part II is concerned with larger-scale fabrication techniques, characterization methods, and the results of tests, together with their interpretation. Major problems which were encountered are also presented with their solutions. sheet material for the dire... View full abstract»

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  • Making negatives and plates for printing by electroerosion: III. Use of the direct negative and direct plate

    Publication Year: 1991, Page(s):512 - 534
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1979 KB)

    Issues related to the practical usage in the pressroom of both the direct negative and direct plate are discussed. Two concerns associated with the usage of the direct negative during platemaking are treated: 1) the effect of light transmission through defects (voids) in the aluminum film, and 2) the effect of light transmission directly through the aluminum. These concerns may be addressed respec... View full abstract»

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  • The art of fractal landscapes

    Publication Year: 1991, Page(s):535 - 540
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (994 KB)

    Synthetic images of fractal landscapes have moved beyond science to enter the domain of “art for art's sake.” We discuss some of the ramifications of this artistic aspect: improving the fractal description of terrains, adding fractal textures to surfaces, and using parallel computers. We illuminate the peculiarities of attaining artistic self-expression in representational imagery pu... View full abstract»

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  • Recent publications by IBM authors

    Publication Year: 1991, Page(s):541 - 562
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1919 KB)

    The information listed here is supplied by the Institute for Scientific Information and other outside sources. Reprints of the papers may be obtained by writing directly to the first author cited. Journals are listed alphabetically by title; papers are listed sequentially for each journal. View full abstract»

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  • Recent IBM patents

    Publication Year: 1991, Page(s):563 - 566
    IEEE is not the copyright holder of this material | PDF file iconPDF (253 KB)
    Freely Available from IEEE

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The IBM Journal of Research and Development is a peer-reviewed technical journal, published bimonthly, which features the work of authors in the science, technology and engineering of information systems.

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Clifford A. Pickover
IBM T. J. Watson Research Center