JPS5748760A - Toner density controller - Google Patents

Toner density controller

Info

Publication number
JPS5748760A
JPS5748760A JP55123690A JP12369080A JPS5748760A JP S5748760 A JPS5748760 A JP S5748760A JP 55123690 A JP55123690 A JP 55123690A JP 12369080 A JP12369080 A JP 12369080A JP S5748760 A JPS5748760 A JP S5748760A
Authority
JP
Japan
Prior art keywords
toner
developer
roller
toner density
density
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
JP55123690A
Other languages
Japanese (ja)
Inventor
Akihiko Taniguchi
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP55123690A priority Critical patent/JPS5748760A/en
Publication of JPS5748760A publication Critical patent/JPS5748760A/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
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To keep toner density constant by providing a roller for density control which adsorbs toner according to the toner density of a developer and by removing the toner adsorbed by the roller and returning the same to a replenishment part. CONSTITUTION:A developer is adsorbed in a magnetic brush-shape onto a sleeve 9 by the magnetic force of a magnetic roll in the inside and this developer is carried to a development area oppositely facing to a photosensitive drum 1, as the sleeve 9 rotates. On the other hand, a control roller 10 for toner density control, which faces to the upstanding tufts part of the magnetic brush of the developer passed through the development area and slidingly contacts, is provided. The roller 10 is driven in the direction shown by an arrow to adsorb toner electrostatically by being applied with a bias, and also a scraper 11 for scraping the stuck toner and returning the same to a hopper 5 is provided. Consequently, the toner density is always held constant.
JP55123690A 1980-09-05 1980-09-05 Toner density controller Pending JPS5748760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55123690A JPS5748760A (en) 1980-09-05 1980-09-05 Toner density controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55123690A JPS5748760A (en) 1980-09-05 1980-09-05 Toner density controller

Publications (1)

Publication Number Publication Date
JPS5748760A true JPS5748760A (en) 1982-03-20

Family

ID=14866906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55123690A Pending JPS5748760A (en) 1980-09-05 1980-09-05 Toner density controller

Country Status (1)

Country Link
JP (1) JPS5748760A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53144341A (en) * 1977-05-21 1978-12-15 Konishiroku Photo Ind Co Ltd Toner content controlling device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53144341A (en) * 1977-05-21 1978-12-15 Konishiroku Photo Ind Co Ltd Toner content controlling device

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