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JPS5275442A - Control means for toner density - Google Patents

Control means for toner density

Info

Publication number
JPS5275442A
JPS5275442A JP15242475A JP15242475A JPS5275442A JP S5275442 A JPS5275442 A JP S5275442A JP 15242475 A JP15242475 A JP 15242475A JP 15242475 A JP15242475 A JP 15242475A JP S5275442 A JPS5275442 A JP S5275442A
Authority
JP
Japan
Prior art keywords
toner density
control means
signal
frequency
magnetic body
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
JP15242475A
Other languages
Japanese (ja)
Other versions
JPS6018061B2 (en
Inventor
Haruyoshi Kono
Takahiko Kitamura
Masashi Kuno
Yoshiharu Manabe
Toshiyuki Ogawa
Mutsuo Watanabe
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 JP15242475A priority Critical patent/JPS6018061B2/en
Publication of JPS5275442A publication Critical patent/JPS5275442A/en
Publication of JPS6018061B2 publication Critical patent/JPS6018061B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To control the toner density in a developer agent containing a magnetic body by oscillating a frequency signal which corresponds to the density of the magnetic body, and furnishing the otner to the developer agent by a signal which varies as the difference of frequency between the former signal and the signal of the reference frequency.
JP15242475A 1975-12-19 1975-12-19 Toner density control device Expired JPS6018061B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15242475A JPS6018061B2 (en) 1975-12-19 1975-12-19 Toner density control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15242475A JPS6018061B2 (en) 1975-12-19 1975-12-19 Toner density control device

Publications (2)

Publication Number Publication Date
JPS5275442A true JPS5275442A (en) 1977-06-24
JPS6018061B2 JPS6018061B2 (en) 1985-05-08

Family

ID=15540202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15242475A Expired JPS6018061B2 (en) 1975-12-19 1975-12-19 Toner density control device

Country Status (1)

Country Link
JP (1) JPS6018061B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100290795A1 (en) * 2009-05-15 2010-11-18 Konica Minolta Business Technologies, Inc. Toner concentration sensor and toner concentration control method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6429512U (en) * 1987-08-12 1989-02-22
JPH04137979U (en) * 1991-06-18 1992-12-22 三輪精機株式会社 cab tilt device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100290795A1 (en) * 2009-05-15 2010-11-18 Konica Minolta Business Technologies, Inc. Toner concentration sensor and toner concentration control method
US8380092B2 (en) * 2009-05-15 2013-02-19 Konica Minolta Business Technologies, Inc. Toner concentration sensor and toner concentration control method

Also Published As

Publication number Publication date
JPS6018061B2 (en) 1985-05-08

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