Patent · US Expired

Maintaining precise electrostatic control using two ESVs

US5285241A · kind A · utility

9Cited by
12References
16Claims
0Family size

Assignee

Inventor

Key dates

Filing dateDec 7, 1982
Grant dateFeb 8, 1994
Priority date
Expiry dateDec 7, 2002

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G15/0121
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

Erroneous voltage readings of Electrostatic Voltmeters (ESVs), which have become contaminated by charged particles (i.e. toner) from developer housings used for developing latent images on a photoreceptor surface, are negated by adjusting the readings of the ESVs to compensate for the contamination of the ESVs. Additionally, The developer housing biases are adjusted by an amount equal to the difference between the voltages measured by the ESVs thereby insuring proper development and cleaning fields during development.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.