IEEE Transactions on Electron Devices

Issue 4 • April 1972

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Displaying Results 1 - 25 of 29
  • [Front cover and table of contents]

    Publication Year: 1972, Page(s): c1
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  • Editorial preface

    Publication Year: 1972, Page(s):391 - 392
    Cited by:  Papers (1)
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  • A method for applying the photoemissive properties of materials to electrophotography

    Publication Year: 1972, Page(s):393 - 395
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (592 KB)

    A new technique that applies the inherent sensitivity and speed of response properties of photoemitters to electrophotography without the need for electronic focusing or deflection is described. An array of very fine photoemitter coated metal pins is sealed into a vacuum envelope and is used to form, on a dielectric surfaces a latent electrostatic charge pattern in response to an optical image. Th... View full abstract»

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  • Canography (Canon NP process) in electrophotography

    Publication Year: 1972, Page(s):396 - 404
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    A new system of electrophotography--the Canon NP process--is discussed. A photosensitive member comprising an insulating layer, a photoconductive layer, and a conductive layer is used in this process. The procedure for the formation of latent images consists of three steps: 1) primary charging, 2) image exposure with ac corona discharging, and 3) blanket exposure. The principle of image formation ... View full abstract»

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  • Electrophotographic processes using a dielectric layer bonded to a photoconductive layer as in the Katsuragawa process

    Publication Year: 1972, Page(s):405 - 412
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (832 KB)

    With a photosensitive plate having a dielectric overcoating, an electrophotographic process available for repeated operation is developed. This process consists of three steps, utilizing the effect of photopolarization. An important feature is to allow the employment of higher photoconductive layers. As a result, high photosensitivity and high electrostatic contrast in electrophotography are achie... View full abstract»

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  • Photoinduced discharge characteristics of xerographic photoreceptors

    Publication Year: 1972, Page(s):413 - 421
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (928 KB)

    The light-induced discharge characteristics of xero-graphic photoreceptors are studied both theoretically and experimentally, using amorphous films of Se and PVK poly(N-vinyl carbazole). In addition to the dependence of the discharge rate on quantum efficiency, trapping, and transit-time effects, several new variables are considered theoretically, including the electric-field dependence and the su... View full abstract»

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  • The relevant physical processes in the photodischarge of a homogeneous photoreceptor

    Publication Year: 1972, Page(s):421 - 430
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    The relevant physical processes involved in the photodischarge of an electrophotographic plate consisting of a homogeneous photoconducting layer are reviewed in light of recent investigations. Typical examples of this type of photoreceptor are amorphous Se and poly-N-vinylcarbazol complexed with trinitro-fluorenone. The essential behavior of this type of photoreceptor can now be quantitatively des... View full abstract»

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  • The role of space-charge-limited currents in photoconductivity-controlled devices

    Publication Year: 1972, Page(s):430 - 433
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (451 KB)

    The optical exposure required to actuate a photoconductivity-controlled device is shown to be determined by the electric field across the photoconductor and not by the sensitivity of the photoconductor, providing the photoconductive gain is above unity. The exposure is approximately 6 × 105KEphotons/cm2for a field ofE V/cm and a dielectric constant<... View full abstract»

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  • Gain in electrophotography—I: Phototransistor configuration

    Publication Year: 1972, Page(s):433 - 436
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (360 KB)

    The potential of the phototransistor or "hook" structure for realizing gain in the electrophotographic process is considered. By considering the phototransistor to be an emission-limited device, it can be shown that gain in excess of unity can only be produced in the external circuit. The charge necessary to produce the image is accumulated on an external capacitor whose size limits the gain to th... View full abstract»

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  • Gain in electrophotography—II: Charge transfer configuration

    Publication Year: 1972, Page(s):437 - 447
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1040 KB)

    The potential of the charge transfer imaging process for producing gain is considered under dynamic exposure conditions. A photoconductor with an ohmic or injecting contact to ground is assumed to be in virtual contact with a dielectric layer. The dielectric collects the charge transferred from the photoconductor under the influence of simultaneous exposure and application of high voltage. From si... View full abstract»

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  • Physical theory of charged pigment electrophotography

    Publication Year: 1972, Page(s):448 - 457
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1096 KB)

    A formal approach to the theory of electrophotography is introduced in which imaging systems are defined and classified according to the dominant physical interactions responsible for the imaging process. The usefulness of the approach lies in the fact that it provides a powerful means of comparative analysis as well as ideal standards against which the performance of real systems can be compared.... View full abstract»

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  • The effects of electric fields on toner—Carrier adhesion in xerographic development

    Publication Year: 1972, Page(s):458 - 462
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (528 KB)

    Centrifuge measurements and electrostatic charge measurements have shown that the force of adhesion of xerographic toner particles to carrier beads can be described by an electrostatic model. In this model the triboelectric charge on the toner particle is attracted by its countercharge residing on the bead surface and during the process of electrostatic development this force of attraction between... View full abstract»

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  • Charging of ZnO-resin layers by negative, positive, and N—P corona ions

    Publication Year: 1972, Page(s):462 - 470
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (944 KB)

    Some experiments by ordinary turntable methods have been made on the charging of ZnO-resin layers by negative, positive, and combined negative and positive (N-P) corona ions. Some mechanisms and theories of corona charging were clarified from the analyses of various experimental data such as theQ-Vcharacteristic curves of samples, theV-Icharacteristic curves of corona charger... View full abstract»

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  • Dye-sensitization mechanism of zinc oxide thin layers

    Publication Year: 1972, Page(s):471 - 474
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (432 KB)

    Thin layers of zinc oxide, prepared by oxidizing zinc selenide were used to examine a previously proposed model for the spectral sensitization of photoconduction. When the sensitizing dyes were adsorbed in low densities, the chemical interactions between the dyes and zinc oxide seemed to repopulate the surface-trapped electrons and the population determined the sensitizing efficiency. When dyes we... View full abstract»

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  • Computer simulation of the development process in electrophotography

    Publication Year: 1972, Page(s):475 - 495
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1464 KB)

    A formulation for the toner deposition time constantWwas derived and the effect of each of the variables appearing in it or the toner deposition equation was studied by computer simulation. The simulations were performed using toners containing 10 and 20 particle sizes over a range of size frequency distributions. It was found that the effect of each variable was quite dependent upon th... View full abstract»

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  • Xerographic development processes: A review

    Publication Year: 1972, Page(s):495 - 511
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1936 KB)

    A variety of processes has been used to develop latent xerographic images. In most cases development results from the interaction between the electric field of the latent image and charged, pigmented toner particles. An understanding of the physics of these processes requires consideration of electrostatic, triboelectric, mechanical, and aero or fluid dynamic effects. Compared with photography, xe... View full abstract»

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  • Photosensitive deformable films

    Publication Year: 1972, Page(s):512 - 523
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1223 KB)

    The history of deformation due to electrostatic forces, from the first experimental observation of the phenomenon to the latest materials and processes for recording optical images, is briefly outlined. The newer light sensitive systems are described in some detail This background is followed by a section on theory which covers electrical fields in nonhomogeneous media, critical electrical field f... View full abstract»

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  • Progress in electrophotography in Western Europe

    Publication Year: 1972, Page(s):524 - 531
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    A review is given of the progress in electrophotographic science and technology in Western Europe during the years 1967 to early 1971. University research work is mainly directed towards two areas: 1) the electrical and physical properties of photoconductors, such as selenium, chalcogenides, oxides, and organic materials; and 2) the sensitization of these photoconductors. Industrial research teams... View full abstract»

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  • Research progress in electrophotography in the U.S.S.R. and Eastern Europe

    Publication Year: 1972, Page(s):531 - 539
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    A review of the latest investigations carried out in Bulgaria, East Germany, Poland, and the U.S.S.R. is presented. The discharge mechanisms both in dark and under illumination are being analyzed for two types of electrophotographic layers--with a binder and without it. In both cases, the discharge mechanism does not only depend on the layer type, its structure and technology, but also on the cond... View full abstract»

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  • A review of progress of electrophotography in Japan

    Publication Year: 1972, Page(s):540 - 542
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (344 KB)

    Major contributions from Japanese investigators in the field of electrophotography are reviewed. Scientific research into understanding photoelectric behavior of zinc oxide and other electrophotographic materials, efforts for developing new electrophotographic systems (e.g., electroplate marking), and analysis and improvement of electrophotographic processes are among the topics included. View full abstract»

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  • High-speed facsimile with electrostatic recording

    Publication Year: 1972, Page(s):543 - 547
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (584 KB)

    Herein is reported a newly developed high-speed facsimile receiver for use over a wide-band transmission line of up to 48 kHz. The main feature of this equipment is low cost and high speed obtained by mechanical scanning. Good quality electrostatic recording has been achieved at a speed of up to 4000 line scans per minute. The circle-to-line converting multistylus made by printed circuit technolog... View full abstract»

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  • Telenewspaper receivers for facsimile broadcast with electrostatic recording

    Publication Year: 1972, Page(s):548 - 556
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1152 KB)

    Japanese newspapers have been very active in the development of electronically delivered hard copies. The Asahi Shimbun (newspaper publishing company), in collaboration with the Tokyo Shibaura Electric Co., Ltd., has developed an experimental model, the "AT-2" Telenewspaper Receiver, and also the model "AT-3." These telenewspaper receivers are primarily aimed at saving time in the printing, transp... View full abstract»

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  • Electroprinting tubes and their applications to television facsimile

    Publication Year: 1972, Page(s):557 - 562
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1152 KB)

    This paper describes two types of electroprinting tubes, one of which has been applied to television facsimile. The electrostatic printing tube and fiber-optics printing tube have a resolution of 8 lines/mm and 15 lines/mm, and a writing speed of 200 m/s and 1700 m/s, respectively. The electron scanning method utilizing the fiber-optics printing tube showed good results in experimental television ... View full abstract»

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  • The VIDEOGRAPH®electrostatic printing process

    Publication Year: 1972, Page(s):563 - 568
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    An electrostatic printing process called VIDEOGRAPH makes use of a special cathode-ray tube for the generation of latent electrostatic images. Television-like signals produce these images on the surface of dielectrically coated paper by means of a special face plate. This face plate contains a large array of finely spaced electrical conductors which permit the transfer of the electrostatic image p... View full abstract»

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  • Chinese-character printer with electrostatic recording

    Publication Year: 1972, Page(s):569 - 579
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1216 KB)

    Mechanical typewriting translators have been widely used for monitoring of Kanji (Chinese character) teleprinter system in newspaper companies despite their substantial disadvantages such as slow typing speed, poor stability, difficult maintenance, and mechanical noise. These disadvantages were completely solved by our electrostatic Kanji teleprinter (Fig. 1) which features high printing speed, re... View full abstract»

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IEEE Transactions on Electron Devices publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects.

 

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Editor-in-Chief

Giovanni Ghione
Politecnico di Torino,
10129 Torino, Italy

Phone +39 011 090 4064
email giovanni.ghione@polito.it