METHOD AND APPARATUS FOR DETECTION OF DENSITY OF INK

PROBLEM TO BE SOLVED: To provide a detecting apparatus, for the concentration of an ink, by which the concentration of the ink can be detected surely and without any error. SOLUTION: A drive means is driven for a prescribed time. A cylindrical electrode 2 and a cleaning roller 3 are turned. Charged...

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Bibliographic Details
Main Author SUETSUGU JUNICHI
Format Patent
LanguageEnglish
Published 26.11.1999
Edition6
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MAGNETOGRAPHY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHOTOGRAPHY
PHYSICS
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide a detecting apparatus, for the concentration of an ink, by which the concentration of the ink can be detected surely and without any error. SOLUTION: A drive means is driven for a prescribed time. A cylindrical electrode 2 and a cleaning roller 3 are turned. Charged particles of an ink 4 which is stuck to the surface of the cylindrical electrode 2 are removed by the cleaning roller 3 which comes into contact with them. After the drive of the drive means is stopped, a pulse voltage V is applied to a plate electrode 1 from a voltage source 5. The charged particles of the ink 4 are moved and stuck to the surface of the cylindrical electrode 2 by an electrophoretic phenomenon, and an apparent current flows to the cylindrical electrode 2. The current is read out by a current detecting means 6. On the basis of the current value of the inverse characteristic peak of an obtained current waveform, the thickness size of the charged particles stuck to the proportional cylindrical electrode 2 is recognized. The density of the ink 4 is detected surely and without any error without being affected by impurities.
Bibliography:Application Number: JP19980153949