JPS5485036A - Developing device of electrostatic latent images - Google Patents

Developing device of electrostatic latent images

Info

Publication number
JPS5485036A
JPS5485036A JP15342677A JP15342677A JPS5485036A JP S5485036 A JPS5485036 A JP S5485036A JP 15342677 A JP15342677 A JP 15342677A JP 15342677 A JP15342677 A JP 15342677A JP S5485036 A JPS5485036 A JP S5485036A
Authority
JP
Japan
Prior art keywords
doctor
hopper
way
toner
developing
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
JP15342677A
Other languages
Japanese (ja)
Inventor
Seiichi Miyagawa
Hajime Koyama
Teruyuki Onuma
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 JP15342677A priority Critical patent/JPS5485036A/en
Publication of JPS5485036A publication Critical patent/JPS5485036A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To perform friction charging or charge injection to toner evenly over the entrire part by providing two doctor members between toner feed member and developing part and making one of them movable. CONSTITUTION:A first doctor 12 which is fixed to hopper side wall 10 by way of an insulator 11 is supported to the outlet side of a hopper 9 and a movable second doctor 14 on the opposite side thereof by way of an insulator 13. Then, the specified volume of toner T delivered out from the hopper 9 at the developing is defined to the initial delivery quantity by the first doctor 12, and is charged to the specified polarity, after which it is defined to the final thickness by the second doctor 14 from the relation of d2<d1 and is friction charged, thence it is contacted to a photosensitive drum 5 by way of a developing roller 6, whereby electrostatic latent images are turned to visible images. While not in development, the second doctor 14 is pulled up to the arrow (a) direction.
JP15342677A 1977-12-20 1977-12-20 Developing device of electrostatic latent images Pending JPS5485036A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15342677A JPS5485036A (en) 1977-12-20 1977-12-20 Developing device of electrostatic latent images

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15342677A JPS5485036A (en) 1977-12-20 1977-12-20 Developing device of electrostatic latent images

Publications (1)

Publication Number Publication Date
JPS5485036A true JPS5485036A (en) 1979-07-06

Family

ID=15562243

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15342677A Pending JPS5485036A (en) 1977-12-20 1977-12-20 Developing device of electrostatic latent images

Country Status (1)

Country Link
JP (1) JPS5485036A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57180352U (en) * 1981-05-11 1982-11-16
JPS599677A (en) * 1982-07-03 1984-01-19 ディベロップ・ドクトル・アイスバイン・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニ− Developer for copying machine or the like
JPH01140565U (en) * 1988-03-19 1989-09-26
DE19819390A1 (en) * 1997-07-03 1999-01-07 Heidelberger Druckmasch Ag Developing electrostatic latent image on image carrier with single component insulative toner

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57180352U (en) * 1981-05-11 1982-11-16
JPS599677A (en) * 1982-07-03 1984-01-19 ディベロップ・ドクトル・アイスバイン・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニ− Developer for copying machine or the like
JPH0342477B2 (en) * 1982-07-03 1991-06-27
JPH01140565U (en) * 1988-03-19 1989-09-26
DE19819390A1 (en) * 1997-07-03 1999-01-07 Heidelberger Druckmasch Ag Developing electrostatic latent image on image carrier with single component insulative toner

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