JPS54135537A - Developing performance detector for binary dry type developer - Google Patents

Developing performance detector for binary dry type developer

Info

Publication number
JPS54135537A
JPS54135537A JP4288878A JP4288878A JPS54135537A JP S54135537 A JPS54135537 A JP S54135537A JP 4288878 A JP4288878 A JP 4288878A JP 4288878 A JP4288878 A JP 4288878A JP S54135537 A JPS54135537 A JP S54135537A
Authority
JP
Japan
Prior art keywords
cloud
toner
housing
density
dry type
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
JP4288878A
Other languages
Japanese (ja)
Inventor
Koji Hirakura
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 JP4288878A priority Critical patent/JPS54135537A/en
Publication of JPS54135537A publication Critical patent/JPS54135537A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To reduce size and contamination of a photoconductive device, to enhance stability, reliability, and durability, and to enable detection of developing performance intermediately, by detecting the density of toner cloud produced in the inside during operation of a developing apparatus. CONSTITUTION:Toner 2a in toner hopper 1 is supplied through toner dispenser 3 into developing apparatus housing 4. Photosensitive drum 12 holding a static latent image and an opposite developing roller 5 rotate, binary dry type developer 2 is drawn up on roller 5 by this, and brought in contact to the surface of drum 12 to develop the static latent image. Then, the developer 2 drops down in housing 4, and scattered to form toner cloud 7. Cloud 7 is passed through cloud suction opening 8 and pipe 6 with air pump 10, and this density is detected with toner cloud density detector 9 provided on the outside of housing 4, and then, the cloud is caught with filter 11.
JP4288878A 1978-04-12 1978-04-12 Developing performance detector for binary dry type developer Pending JPS54135537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4288878A JPS54135537A (en) 1978-04-12 1978-04-12 Developing performance detector for binary dry type developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4288878A JPS54135537A (en) 1978-04-12 1978-04-12 Developing performance detector for binary dry type developer

Publications (1)

Publication Number Publication Date
JPS54135537A true JPS54135537A (en) 1979-10-20

Family

ID=12648563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4288878A Pending JPS54135537A (en) 1978-04-12 1978-04-12 Developing performance detector for binary dry type developer

Country Status (1)

Country Link
JP (1) JPS54135537A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796604A (en) * 1987-02-13 1989-01-10 Olympus Optical Co., Ltd. Endoscope and a light guide thereof and a method for manufacturing the light guide

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895244A (en) * 1972-02-22 1973-12-06
JPS5010141A (en) * 1973-05-25 1975-02-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4895244A (en) * 1972-02-22 1973-12-06
JPS5010141A (en) * 1973-05-25 1975-02-01

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796604A (en) * 1987-02-13 1989-01-10 Olympus Optical Co., Ltd. Endoscope and a light guide thereof and a method for manufacturing the light guide

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