GB1360096A - Apparatus for controlling toner concentration - Google Patents

Apparatus for controlling toner concentration

Info

Publication number
GB1360096A
GB1360096A GB4505071A GB4505071A GB1360096A GB 1360096 A GB1360096 A GB 1360096A GB 4505071 A GB4505071 A GB 4505071A GB 4505071 A GB4505071 A GB 4505071A GB 1360096 A GB1360096 A GB 1360096A
Authority
GB
United Kingdom
Prior art keywords
toner
toner concentration
reservoir
sept
embodiment figs
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
GB4505071A
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Publication of GB1360096A publication Critical patent/GB1360096A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
    • G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
    • G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0849—Detection or control means for the developer concentration
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0856—Detection or control means for the developer level
    • G03G15/0858—Detection or control means for the developer level the level being measured by mechanical means
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • G03G15/0889—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for agitation or stirring

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

1360096 Regulating; automatic control of toner concentration XEROX CORP 28 Sept 1971 [30 Sept 1970 (2)] 45050/71 Headings G2H and G3R [Also in Division G1] In a xerographic reproducing apparatus a resistance strain gauge 20' is cantilever mounted to the inner wall 21 of a reservoir for developer material including toner powder and carrier powder which material is agitated by a multiblade rotor 25, the resulting bending of the cantilever being a function of material viscosity and therefore of toner concentration, so that an electrical signal from the gauge is representative of toner concentration and may be applied to sensing unit (30) Fig.3 (not shown), including a bridge circuit, and controlling the opening of a door on a toner dispenser to release a measured amount of toner into the reservoir. In an alternative embodiment Figs.5, 6 (not shown) a transducer (27) is arranged to be responsive to the torque exerted on the shafts of augers (28, 29) and a multiblade rotor (46) situated in the developer reservoir (47) and driven by a motor (26). A further embodiment Figs. 7, 8 (not shown) utilizes the sensed torque signal to control a toner dispenser (50) to maintain toner concentration within a predetermined range.
GB4505071A 1970-09-30 1971-09-28 Apparatus for controlling toner concentration Expired GB1360096A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7693070A 1970-09-30 1970-09-30
US7692970A 1970-09-30 1970-09-30

Publications (1)

Publication Number Publication Date
GB1360096A true GB1360096A (en) 1974-07-17

Family

ID=26758659

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4505071A Expired GB1360096A (en) 1970-09-30 1971-09-28 Apparatus for controlling toner concentration

Country Status (2)

Country Link
DE (1) DE2148909A1 (en)
GB (1) GB1360096A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205531A1 (en) * 1981-02-18 1982-09-09 Canon K.K., Tokyo DEVELOPER CONCENTRATION CONTROL DEVICE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2750774A1 (en) * 1977-11-12 1979-05-17 Hoechst Ag PROCEDURE FOR MAINTAINING THE CONCENTRATION IN A LIQUID DEVELOPER SOLUTION, IN PARTICULAR FOR A DEVELOPMENT PROCESS USING THE SEMI-WET PROCESS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3205531A1 (en) * 1981-02-18 1982-09-09 Canon K.K., Tokyo DEVELOPER CONCENTRATION CONTROL DEVICE

Also Published As

Publication number Publication date
DE2148909A1 (en) 1972-04-06

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees