Title:
METHOD AND APPARATUS FOR DETECTION OF CONCENTRATION OF LIQUID
Document Type and Number:
Japanese Patent JP3668631
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for the detection of the concentration of a liquid, in which the concentration of the liquid in a wide range is detected by using an optical sensor.
SOLUTION: A liquid carrying roller 1 is formed in such a way that an eccentric disk part 1b and two identical-diameter disk parts 1a which sandwich the eccentric disk part 1b from both sides and whose diameter is larger than the diameter of the eccentric disk part 1b are integrated. By using the liquid carrying roller 1, a liquid to be detected is filled into a recessed part, in the circumferential direction, formed in a step part between the eccentric disk part 1b and the two disk parts 1a. The liquid is formed in a plurality of film thicknesses which are different from each other according to the step part. Then, on the basis of the output of an optical sensor regarding the plurality of film thicknesses, the concentration of the liquid is detected.
Inventors:
Osamu Sato
Tsutomu Sasaki
Masahiko Itaya
Tsutomu Sasaki
Masahiko Itaya
Application Number:
JP5294899A
Publication Date:
July 06, 2005
Filing Date:
March 01, 1999
Export Citation:
Assignee:
株式会社リコー
International Classes:
G01N21/03; G01N21/59; G03G15/10; G03G15/11; (IPC1-7): G01N21/59; G01N21/03; G03G15/11
Domestic Patent References:
| JP57156542A | ||||
| JP7500904A | ||||
| JP56063243A |
Attorney, Agent or Firm:
Toshi Kuroda