JPS6425154A - Instrument for measuring specific charge distribution of toner particle - Google Patents

Instrument for measuring specific charge distribution of toner particle

Info

Publication number
JPS6425154A
JPS6425154A JP62180967A JP18096787A JPS6425154A JP S6425154 A JPS6425154 A JP S6425154A JP 62180967 A JP62180967 A JP 62180967A JP 18096787 A JP18096787 A JP 18096787A JP S6425154 A JPS6425154 A JP S6425154A
Authority
JP
Japan
Prior art keywords
specific charge
toner particles
charge distribution
sensors
calculates
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62180967A
Other languages
Japanese (ja)
Inventor
Hiroaki Nakamura
Masatoshi Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP62180967A priority Critical patent/JPS6425154A/en
Publication of JPS6425154A publication Critical patent/JPS6425154A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability

Abstract

PURPOSE:To automate measurement by providing line image sensors which detect the deviation quantity of toner particles so that the specific charge of the toner particles can be exactly and rapidly measured. CONSTITUTION:Two units of CCD line sensors 26, 27 are provided as the line image sensors for measuring the horizontal positions where the particles past a detecting range 28 pass are provided on the front part of a specific charge distribution measuring instrument body. A line sensor driving circuit 32, an image buffer 33 which transienty stores the information of the CCD line sensors and a CPU 34 which actually calculates the specific charge distribution of the toner particles are provided on the CCD line sensors 26, 27. The CPU 34 calculates the deviation quantity and degree of flocculation by the electric field of the toner particles and calculates the specific charge quantity of each one of the toner particles successively until finally the specific charge distribution of the toner particles is determined. The measurement is thereby automated.
JP62180967A 1987-07-22 1987-07-22 Instrument for measuring specific charge distribution of toner particle Pending JPS6425154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62180967A JPS6425154A (en) 1987-07-22 1987-07-22 Instrument for measuring specific charge distribution of toner particle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62180967A JPS6425154A (en) 1987-07-22 1987-07-22 Instrument for measuring specific charge distribution of toner particle

Publications (1)

Publication Number Publication Date
JPS6425154A true JPS6425154A (en) 1989-01-27

Family

ID=16092409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62180967A Pending JPS6425154A (en) 1987-07-22 1987-07-22 Instrument for measuring specific charge distribution of toner particle

Country Status (1)

Country Link
JP (1) JPS6425154A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657785A1 (en) * 1993-12-06 1995-06-14 Sharp Kabushiki Kaisha Measuring device for amount of charge of toner and image forming apparatus having the measuring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0657785A1 (en) * 1993-12-06 1995-06-14 Sharp Kabushiki Kaisha Measuring device for amount of charge of toner and image forming apparatus having the measuring device
US5486900A (en) * 1993-12-06 1996-01-23 Sharp Kabushiki Kaisha Measuring device for amount of charge of toner and image forming apparatus having the measuring device

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