GB1253554A - Improvements in and relating to electrophotographic copying apparatus - Google Patents

Improvements in and relating to electrophotographic copying apparatus

Info

Publication number
GB1253554A
GB1253554A GB8056/69A GB805669A GB1253554A GB 1253554 A GB1253554 A GB 1253554A GB 8056/69 A GB8056/69 A GB 8056/69A GB 805669 A GB805669 A GB 805669A GB 1253554 A GB1253554 A GB 1253554A
Authority
GB
United Kingdom
Prior art keywords
toner
copying apparatus
concentration
relating
electrophotographic copying
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.)
Expired
Application number
GB8056/69A
Inventor
Shigeru Suzuki
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 GB8056/69A priority Critical patent/GB1253554A/en
Priority to DE19691907940 priority patent/DE1907940A1/en
Publication of GB1253554A publication Critical patent/GB1253554A/en
Expired 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
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/104—Preparing, mixing, transporting or dispensing developer
    • G03G15/105—Detection or control means for the toner concentration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wet Developing In Electrophotography (AREA)

Abstract

1,253,554. Indicating toner concentration. RICOH K. K. Feb. 14, 1969, No.8056/69. Heading G2H. The concentration of toner in a liquid developing device, forming part of an electro-photographic copying apparatus, is indicated by comparing toner visible in a translucent portion 9 of a tube 6 with a reference indicator having portions 10, 11, 12 of standard, greater and a lesser concentration. A lump 13 illuminates both the translucent portion 9 and the indicator. A push button 21 of a pump 20 is actuated to supply toner from a tank 16 to the developer tank 1.
GB8056/69A 1969-02-14 1969-02-14 Improvements in and relating to electrophotographic copying apparatus Expired GB1253554A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8056/69A GB1253554A (en) 1969-02-14 1969-02-14 Improvements in and relating to electrophotographic copying apparatus
DE19691907940 DE1907940A1 (en) 1969-02-14 1969-02-17 Electrophotographic copier with wet development

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8056/69A GB1253554A (en) 1969-02-14 1969-02-14 Improvements in and relating to electrophotographic copying apparatus
DE19691907940 DE1907940A1 (en) 1969-02-14 1969-02-17 Electrophotographic copier with wet development

Publications (1)

Publication Number Publication Date
GB1253554A true GB1253554A (en) 1971-11-17

Family

ID=25757007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8056/69A Expired GB1253554A (en) 1969-02-14 1969-02-14 Improvements in and relating to electrophotographic copying apparatus

Country Status (2)

Country Link
DE (1) DE1907940A1 (en)
GB (1) GB1253554A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306174A2 (en) * 1987-09-03 1989-03-08 Spectrum Sciences B.V. Pneumatic charge director dispensing apparatus
EP0306217A2 (en) * 1987-08-31 1989-03-08 Savin Corporation Concentrated toner solution and pressurized toner dispensing mechanism
US4860924A (en) * 1986-02-14 1989-08-29 Savin Corporation Liquid developer charge director control

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4860924A (en) * 1986-02-14 1989-08-29 Savin Corporation Liquid developer charge director control
EP0306217A2 (en) * 1987-08-31 1989-03-08 Savin Corporation Concentrated toner solution and pressurized toner dispensing mechanism
EP0306217A3 (en) * 1987-08-31 1989-08-23 Savin Corporation Concentrated toner solution and pressurized toner dispensing mechanism
EP0306174A2 (en) * 1987-09-03 1989-03-08 Spectrum Sciences B.V. Pneumatic charge director dispensing apparatus
EP0306174A3 (en) * 1987-09-03 1989-04-19 Spectrum Sciences B.V. Pneumatic charge director dispensing apparatus

Also Published As

Publication number Publication date
DE1907940A1 (en) 1970-09-03

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