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Developing apparatus for electrostatic photography

  • US 4,445,771 A
  • Filed: 11/30/1981
  • Issued: 05/01/1984
  • Est. Priority Date: 12/05/1980
  • Status: Expired due to Term
First Claim
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1. A developing apparatus for electrostatic photography which feeds a developer from a reservoir to a predetermined developing station to develop a latent image electrostatically formed on a moving photoconductive member into a visible image, comprising:

  • (a) a conveying means for conveying a roughly regulated volume of the developer from the reservoir toward the developing station, the developer being of a one component type which consists of a toner only; and

    (b) a charging means for charging the toner to a predetermined polarity by frictional contact therewith while the toner is conveyed toward the developing station by the conveying means, whereby the charged toner is adhered to the charging means by electrostatic attraction to form an evenly charged toner layer having a relatively small uniform thickness.

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