Patent · US Active

Abnormal usage detection

US7983574B2 · kind B2 · utility

13Cited by
6References
18Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 10, 2007
Grant dateJul 19, 2011
Priority date—
Expiry dateMar 29, 2029

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G15/55
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A method and system compare actual consumable usage (e.g., toner usage) with expected consumable usage in a xerographic machine, such as a printer or copier. Expected toner usage may be predicted from pixel count (area coverage) and actual usage is obtained from monitoring of consumable usage, such as from toner dispense data or toner bottle replacements. If the actual toner usage differs significantly from the expected toner usage (e.g., ±40%), the system may take some action, such as scheduling of a service call. Early detection of abnormal consumable usage in a xerographic machine may allow early correction before any noticeable image defects occur, such as images that are too light or too dark.

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