JPS5779972A - Setting method for toner concentration controller - Google Patents

Setting method for toner concentration controller

Info

Publication number
JPS5779972A
JPS5779972A JP15622780A JP15622780A JPS5779972A JP S5779972 A JPS5779972 A JP S5779972A JP 15622780 A JP15622780 A JP 15622780A JP 15622780 A JP15622780 A JP 15622780A JP S5779972 A JPS5779972 A JP S5779972A
Authority
JP
Japan
Prior art keywords
toner
detector
signal
concn
voltage
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.)
Granted
Application number
JP15622780A
Other languages
Japanese (ja)
Other versions
JPS645299B2 (en
Inventor
Yasushi Furuichi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP15622780A priority Critical patent/JPS5779972A/en
Publication of JPS5779972A publication Critical patent/JPS5779972A/en
Publication of JPS645299B2 publication Critical patent/JPS645299B2/ja
Granted 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 perform setting easily by adjusting a toner concn. controller until the signal of the prescribed part of said controller coincides with an intended signal when applied with a digital signal. CONSTITUTION:The concn. of the toner of a two component type developer in the developing part of a dry type electrophotographic device is detected by a detector 1. The detector 1 detects the toner con. as a frequency and the output signal of the detector 1 is converted to voltage according to toner concns. by a voltage conversion part 2. This voltage is amplified 3 and is compared with the reference voltage of a reference electric power source 5. Normally, a switch 6 is charged over to a toner replenishing part 7 side which is grounded and is abled. A reference voltage control signal generator 8 is opened at the ground line and is disabled. Hence, the output signal of the comparator 4 is amplified by an amplifier 9 and is applied to the part 7, then the part 7 replenishes the ton er to the developer in the developing part, whereby the toner concn. is controlled constant.
JP15622780A 1980-11-06 1980-11-06 Setting method for toner concentration controller Granted JPS5779972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15622780A JPS5779972A (en) 1980-11-06 1980-11-06 Setting method for toner concentration controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15622780A JPS5779972A (en) 1980-11-06 1980-11-06 Setting method for toner concentration controller

Publications (2)

Publication Number Publication Date
JPS5779972A true JPS5779972A (en) 1982-05-19
JPS645299B2 JPS645299B2 (en) 1989-01-30

Family

ID=15623131

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15622780A Granted JPS5779972A (en) 1980-11-06 1980-11-06 Setting method for toner concentration controller

Country Status (1)

Country Link
JP (1) JPS5779972A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59198559A (en) * 1983-04-22 1984-11-10 Hitachi Ltd Loading and ejecting mechanism of recording medium
JPS63284581A (en) * 1987-05-15 1988-11-21 Sharp Corp Toner concentration controller
JPH01178990A (en) * 1987-12-29 1989-07-17 Toshiba Corp Automatic toner sensor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5383142U (en) * 1976-12-11 1978-07-10
JPS5398837A (en) * 1977-02-09 1978-08-29 Canon Inc Adjustment of developing agnet and its device
JPS547351A (en) * 1977-06-20 1979-01-20 Ricoh Co Ltd Reference density controller for toner density detector
JPS5443040A (en) * 1977-09-12 1979-04-05 Hitachi Ltd Toner concentration detector
JPS54153635A (en) * 1978-05-25 1979-12-04 Konishiroku Photo Ind Co Ltd Detecting and controlling method of toner contents in developer and device for said method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5383142U (en) * 1976-12-11 1978-07-10
JPS5398837A (en) * 1977-02-09 1978-08-29 Canon Inc Adjustment of developing agnet and its device
JPS547351A (en) * 1977-06-20 1979-01-20 Ricoh Co Ltd Reference density controller for toner density detector
JPS5443040A (en) * 1977-09-12 1979-04-05 Hitachi Ltd Toner concentration detector
JPS54153635A (en) * 1978-05-25 1979-12-04 Konishiroku Photo Ind Co Ltd Detecting and controlling method of toner contents in developer and device for said method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59198559A (en) * 1983-04-22 1984-11-10 Hitachi Ltd Loading and ejecting mechanism of recording medium
JPH0322661B2 (en) * 1983-04-22 1991-03-27 Hitachi Ltd
JPS63284581A (en) * 1987-05-15 1988-11-21 Sharp Corp Toner concentration controller
JPH01178990A (en) * 1987-12-29 1989-07-17 Toshiba Corp Automatic toner sensor

Also Published As

Publication number Publication date
JPS645299B2 (en) 1989-01-30

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