JPS56168671A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS56168671A
JPS56168671A JP7183580A JP7183580A JPS56168671A JP S56168671 A JPS56168671 A JP S56168671A JP 7183580 A JP7183580 A JP 7183580A JP 7183580 A JP7183580 A JP 7183580A JP S56168671 A JPS56168671 A JP S56168671A
Authority
JP
Japan
Prior art keywords
developer
developing
sensor
plate
flow
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
JP7183580A
Other languages
Japanese (ja)
Inventor
Takaharu Goto
Hiromi Kashiwagi
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP7183580A priority Critical patent/JPS56168671A/en
Publication of JPS56168671A publication Critical patent/JPS56168671A/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
    • G03G15/0849—Detection or control means for the developer concentration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To detect the toner concn. in the developer after the end of developing accurately in a short time by delaying the flow of the developer by means of a guide plate provided above a scraper plate, and providing a sensor in the position where the developer attains the steady state. CONSTITUTION:A guide plate 15 of such a length which covers a part of a scraper plate 7 is disposed above said plate, and a sensor 14 for detecting con. is provided between the two. In this constitution, the developer scraped off from a nonmagnetic sleeve 2 by the plate 7 is divided in the directions of the arrow A, B. Whilist the flow of A is fast, the flow of B retards near sensor 14, and quickly attains the steady state during the time till the next rotation of the sleeve 2. Therefore, the sensor 14 quickly responds in the short time from the developing till the next developing, so that the toner concns. are detected accurately at every developing cycle.
JP7183580A 1980-05-29 1980-05-29 Magnetic brush developing device Pending JPS56168671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7183580A JPS56168671A (en) 1980-05-29 1980-05-29 Magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7183580A JPS56168671A (en) 1980-05-29 1980-05-29 Magnetic brush developing device

Publications (1)

Publication Number Publication Date
JPS56168671A true JPS56168671A (en) 1981-12-24

Family

ID=13471990

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7183580A Pending JPS56168671A (en) 1980-05-29 1980-05-29 Magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS56168671A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6157967A (en) * 1984-08-29 1986-03-25 Sharp Corp Developer density controller
JPS6157968A (en) * 1984-08-29 1986-03-25 Sharp Corp Developer density controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6157967A (en) * 1984-08-29 1986-03-25 Sharp Corp Developer density controller
JPS6157968A (en) * 1984-08-29 1986-03-25 Sharp Corp Developer density controller
JPH045386B2 (en) * 1984-08-29 1992-01-31

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