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IBM Journal of Research and Development

Issue 1 • Date Jan. 1978

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Displaying Results 1 - 17 of 17
  • Control of the IBM 3800 Printing Subsystem

    Publication Year: 1978, Page(s):2 - 12
    Cited by:  Papers (1)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (685 KB)

    The IBM 3800 Printing Subsystem is controlled by a high speed multilevel, interrupt-driven microprocessor. The design of this system has included several innovative concepts to take advantage of the flexibility of electrophotographic laser printing. New functions that are introduced include intermixed pitches, fonts, and line spacings; user-alterable character sets; on-line forms generation; and s... View full abstract»

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  • Paper Path of an On-Line Computer-Output Printer

    Publication Year: 1978, Page(s):13 - 18
    Cited by:  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (487 KB)

    This paper describes the development of a paper handling system designed to move paper at a speed of 81 cm/s in the IBM 3800 Printing Subsystem. During the development of the printer a number of unique problems arose from the interaction among paperline components. The various approaches and solutions to these problems, including paper path alignment, character stretch, registration within the fus... View full abstract»

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  • Paper Servo Design for a High Speed Printer Using Simulation

    Publication Year: 1978, Page(s):19 - 25
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (481 KB)

    The design of feedback systems for control of paper motion through the IBM Printing 3800 Subsystem is described. The main tool for analysis and optimization is DSL, a digital simulation language for systems of continuous nature. The several stages in the evolution of the design are discussed. View full abstract»

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  • Design of the Fusing System for an Electrophotographic Laser Printer

    Publication Year: 1978, Page(s):26 - 33
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (524 KB)

    This paper discusses the development and design of the fusing system used in the IBM 3800 Printing Subsystem. The design solutions provide satisfactory fusing of powdered toner print images to paper at a processing rate of 81 cm/s under a variety of operating conditions. View full abstract»

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  • Electrophotographic Process in a High Speed Printer

    Publication Year: 1978, Page(s):34 - 39
    Cited by:  Papers (2)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    The IBM 3800 printing subsystem was developed for on-line computer system output printing in hard copy form at high speeds. The subsystem combines laser and electrophotographic technology with a multiformat paper handling system and on-line character set variability to provide increased data handling flexibility, throughput and print quality at reduced cost. This paper presents design consideratio... View full abstract»

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  • Light Scattering Study of Structures in a Smectic Liquid Crystal

    Publication Year: 1978, Page(s):40 - 50
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (748 KB)

    The effect of surface treatment, sample thickness, and cooling rate on the structural order in the smectic phase of p-n-octyl-p′-cyano-biphenyl has been investigated by light scattering, and the results have been interpreted in terms of theories developed for crystalline polymers. Fan-shaped superstructures are found when the long dimension of the liquid crystal molecules is aligned paralle... View full abstract»

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  • Phase Equilibria in Liquid Crystal Mixtures

    Publication Year: 1978, Page(s):51 - 59
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (536 KB)

    The thermodynamic relationships for mixtures of nonmesomorphic compounds are applied to liquid crystalline materials. Equations developed for ascending solid solutions have been applied to mixtures of liquid crystalline materials. Computer programs, written to calculate the theoretical curves for such mixtures, are found to agree with the experimental data obtained for 4-alkyl and 4-alkoxy 4ȃ... View full abstract»

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  • Automated Validation of a Communications Protocol: the CCITT X.21 Recommendation

    Publication Year: 1978, Page(s):60 - 71
    Cited by:  Papers (21)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (627 KB)

    The call establishment procedure of the X.21 interface recommended by the International Telegraph and Telephone Consultative Committee (CCITT) has been validated as a test of a recently developed theory and of an implemented system for automated communications protocol validation. The test demonstrated the applicability of the validation technique and identified a number of points where the interf... View full abstract»

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  • Relation Between an Atomic Electronegativity Scale and the Work Function

    Publication Year: 1978, Page(s):72 - 80
    Cited by:  Papers (5)  |  Patents (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (607 KB)

    Recently compiled data for the first electron affinity and the first ionization potential are used to obtain values for an atomic electronegativity scale, based on the Mulliken relation. From this scale and a new compilation of work function data, a linear equation is obtained which includes a parameter for any given element, depending on its subgroup in the periodic table. Data are plotted for 51... View full abstract»

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  • Data Acquisition and Reduction Program for Thermogravimetry

    Publication Year: 1978, Page(s):81 - 89
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (585 KB)

    An on-line data acquisition system for thermogravimetry using the IBM S/7 computer followed by data reduction on a 360/195 is described by means of flow charts. The system is designed so that no knowledge of programming is required to acquire, display and manipulate data on an interactive graphics terminal. The program not only extracts weight loss data, but also computes the energies of activatio... View full abstract»

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  • Influence of Jet Printing Inks on Wear

    Publication Year: 1978, Page(s):90 - 93
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (399 KB)

    This communication reports the results of wear tests performed to determine the influence of jet printing inks on the wear of several polymer-metal pairs, which were known to be compatible with the inks. It is shown that these inks generally tend to increase wear beyond that occurring in a dry state. The principal reason for this increase was concluded to be the adverse influence that the inks hav... View full abstract»

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  • IBM Journal of Research and Development: Information for Authors

    Publication Year: 1978, Page(s):94 - 96
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (343 KB)

    This paper combines background information about the IBM Journal of Research and Development with guidelines for the preparation of Journal manuscripts. The purpose is to acquaint authors with the Journal as a primary, professional publication and to present suggestions to ease the work of author and editor in preparing clear, concise, and useful manuscripts. View full abstract»

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  • Recent papers by IBM authors

    Publication Year: 1978, Page(s):97 - 101
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (441 KB)

    Reprints of the papers listed here may usually be obtained by writing directly to the authors. The authors' IBM divisions are identified as follows: DPD is the Data Processing Division; FED, Field Engineering Division; FSD, Federal Systems Division; GPD, General Products Division; GSD, General Systems Division; GTD, General Technology Division; OPD, Ofice Products Division; RES, Research Division;... View full abstract»

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  • Recent IBM patents

    Publication Year: 1978, Page(s):102 - 105
    IEEE is not the copyright holder of this material | PDF file iconPDF (274 KB)
    Freely Available from IEEE
  • Authors

    Publication Year: 1978, Page(s):106 - 108
    IEEE is not the copyright holder of this material | PDF file iconPDF (311 KB)
    Freely Available from IEEE
  • Contents of previous issues

    Publication Year: 1978, Page(s):109 - 110
    IEEE is not the copyright holder of this material | PDF file iconPDF (149 KB)
    Freely Available from IEEE
  • Erratum [J. M. Fleischer, M. R. Latta, and M. E. Rabedeau, “Laser-Optical System of the IBM 3800 Printer,” IBM J. Res. Develop. 21,479-483 (September 1977)]

    Publication Year: 1978, Page(s): 110
    IEEE is not the copyright holder of this material | PDF file iconPDF (229 KB)
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Aims & Scope

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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Meet Our Editors

Editor-in-Chief
Clifford A. Pickover
IBM T. J. Watson Research Center