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Primary Examiner: Smith, Ronald H.
Assistant Examiner: Frenkel, Stuart D.
Attorney: Webster; Ogden H.

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Title: Process for developing electrographic images by causing electrical breakdown in the developer

Abstract: Development of electrostatic charge patterns (e.g., electrostatic latent images) carried on a support is accomplished in an electrographic process in which during development, an electrical field which is greater than the electrical breakdown value of the developer (i.e., greater than the maximum electrical field that the developer can support without undergoing electrical breakdown) is established across the developer in the development area. The process enables development of high quality, large solid-area images at high processing rates.

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Inventors: Kasper, George Philip (Rochester, NY, US)
May, John Walter (Rochester, NY, US)

Application Number: 700248
Filing Date: 1976-06-28
Publication_date: 1978-02-28
Assignee: Eastman Kodak Company (Rochester, NY)
Primary Class(es): 430/103 427/469, 430/104, 430/105, 430/111.34, 430/111.41, 430/120, 430/122
Other Classes:
US Patent Ref:

3219014	Nov, 1965	Mott et al.	427/18.
3424131	Jan, 1969	Aser et al.	427/20.
3428025	Feb, 1969	Sullivan	427/14.
3674532	Jul, 1972	Morse	427/18.
3783826	Jan, 1974	Urbanek et al.	96/1.
3893408	Jul, 1975	Lamel	118/7.
3932034	Jan, 1976	Takahashi	355/3.

Other Refs: Other References: Kutsuwada, Norborn and Ando, Yujiro; "Studies on Transfer of Electrophotographic Powder Images," Denshi Shashin [Electrophotography] 10, No. 1, 14-17, (1971).
Harpavat, G.; "Electrostatic Field Stripping Model of Magnetic Brush Development," Conference Record IAS 1975; pp. 128-134.
Schein, L. B., "The Physics of Magnetic Brush Development" Conference Record IAS 1975; pp. 140-144.