Patent · US Active

Solid-concentration measuring apparatus and method thereof, and solid-concentration control system

US7764891B2 · kind B2 · utility

6Cited by
3References
17Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 5, 2007
Grant dateJul 27, 2010
Priority date
Expiry dateJun 29, 2028

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N2291/02881
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A solid-concentration measuring apparatus includes an ultrasonic transmitter, an ultrasonic receiver, and a response-time integrator. The ultrasonic transmitter transmits a single-pulse ultrasonic wave to a liquid toner. The ultrasonic receiver receives the single-pulse ultrasonic wave. The ultrasonic transmitter transmits again a single-pulse ultrasonic wave after a predetermined time has passed from when the ultrasonic receiver receives the single-pulse ultrasonic wave. The response-time integrator measures a response time from transmission to reception of each single-pulse ultrasonic wave, and integrates the response time with respect to each set of N pulses (N>1). A solid concentration of the liquid toner is calculated based on the integrated response time.

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