JPS53106137A - Detection of tone concentration - Google Patents

Detection of tone concentration

Info

Publication number
JPS53106137A
JPS53106137A JP2183077A JP2183077A JPS53106137A JP S53106137 A JPS53106137 A JP S53106137A JP 2183077 A JP2183077 A JP 2183077A JP 2183077 A JP2183077 A JP 2183077A JP S53106137 A JPS53106137 A JP S53106137A
Authority
JP
Japan
Prior art keywords
detection
tone concentration
concentration
tone
orifice
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
JP2183077A
Other languages
Japanese (ja)
Inventor
Susumu Tatsumi
Seiichi Miyagawa
Koji Sakamoto
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 JP2183077A priority Critical patent/JPS53106137A/en
Priority to GB6949/78A priority patent/GB1600956A/en
Priority to DE2808587A priority patent/DE2808587C3/en
Publication of JPS53106137A publication Critical patent/JPS53106137A/en
Priority to US06/726,166 priority patent/US4640129A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To enable detection of toner concentration at optional time with simple and easy structure and operation by permitting a predetermined quantity of developing agent contained in a vessel to flow down through an orifice and measuring the time necessary for flowing down.
JP2183077A 1977-02-28 1977-02-28 Detection of tone concentration Pending JPS53106137A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2183077A JPS53106137A (en) 1977-02-28 1977-02-28 Detection of tone concentration
GB6949/78A GB1600956A (en) 1977-02-28 1978-02-22 Methods and apparatus for detecting toner concentrations
DE2808587A DE2808587C3 (en) 1977-02-28 1978-02-28 Method for determining the toner concentration of a two-component dry developer and device for carrying out such a method
US06/726,166 US4640129A (en) 1977-02-28 1985-04-22 Method and apparatus for detecting toner concentration of two-component dry developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2183077A JPS53106137A (en) 1977-02-28 1977-02-28 Detection of tone concentration

Publications (1)

Publication Number Publication Date
JPS53106137A true JPS53106137A (en) 1978-09-14

Family

ID=12065976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2183077A Pending JPS53106137A (en) 1977-02-28 1977-02-28 Detection of tone concentration

Country Status (1)

Country Link
JP (1) JPS53106137A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612119A (en) * 1983-04-09 1986-09-16 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Hollow fiber filter medium and process for preparing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612119A (en) * 1983-04-09 1986-09-16 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Hollow fiber filter medium and process for preparing the same

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