JPS5711365A - Toner developing device - Google Patents

Toner developing device

Info

Publication number
JPS5711365A
JPS5711365A JP8561780A JP8561780A JPS5711365A JP S5711365 A JPS5711365 A JP S5711365A JP 8561780 A JP8561780 A JP 8561780A JP 8561780 A JP8561780 A JP 8561780A JP S5711365 A JPS5711365 A JP S5711365A
Authority
JP
Japan
Prior art keywords
toner
width direction
projector
uneven
nozzle
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
JP8561780A
Other languages
Japanese (ja)
Inventor
Yoshihiro Nakajo
Eizo Kanetani
Hitoshi Horino
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP8561780A priority Critical patent/JPS5711365A/en
Publication of JPS5711365A publication Critical patent/JPS5711365A/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
    • G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical means
    • 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
    • G03G15/0877—Arrangements for metering and dispensing developer from a developer cartridge into the development unit

Abstract

PURPOSE:To uniform the toner concentration in the width direction and prevent the copying density from being uneven. CONSTITUTION:A toner feed tube 19 with plural toner discharging ports 20 is attached to the width direction of a developing device 2. The other end of the feed tube 19 is connected to a toner hopper 22, the opening of nozzle 24 is connected to a pipe 21 and a projector 26 and a light receiver 27 are set up so as to oppose against a transparent window 25. When the toner concentration is diluted as the result of repeat of developing and the carrier concentration is increased, the quantity of light reflected by the projector 26 is increased and, if the quantity of reflected light exceeds a fixed value, a feed source 23 of pressured air starts by the output signal from the light receiver 27 and toner is fed by the back pressure of blowing from the nozzle 24. Thus, new toner is replenished uniformly to the width direction, preventing the copying density from being uneven.
JP8561780A 1980-06-24 1980-06-24 Toner developing device Pending JPS5711365A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8561780A JPS5711365A (en) 1980-06-24 1980-06-24 Toner developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8561780A JPS5711365A (en) 1980-06-24 1980-06-24 Toner developing device

Publications (1)

Publication Number Publication Date
JPS5711365A true JPS5711365A (en) 1982-01-21

Family

ID=13863799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8561780A Pending JPS5711365A (en) 1980-06-24 1980-06-24 Toner developing device

Country Status (1)

Country Link
JP (1) JPS5711365A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60128361U (en) * 1984-02-06 1985-08-28 株式会社日本製鋼所 Jumping developer
JPS6344675A (en) * 1986-08-11 1988-02-25 ゼロツクス　コ−ポレ−シヨン Particle conveying apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60128361U (en) * 1984-02-06 1985-08-28 株式会社日本製鋼所 Jumping developer
JPS6344675A (en) * 1986-08-11 1988-02-25 ゼロツクス　コ−ポレ−シヨン Particle conveying apparatus

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