GB1367681A - Method and apparatus for controlling weight ratio of toner to iron - Google Patents

Method and apparatus for controlling weight ratio of toner to iron

Info

Publication number
GB1367681A
GB1367681A GB3881271A GB3881271A GB1367681A GB 1367681 A GB1367681 A GB 1367681A GB 3881271 A GB3881271 A GB 3881271A GB 3881271 A GB3881271 A GB 3881271A GB 1367681 A GB1367681 A GB 1367681A
Authority
GB
United Kingdom
Prior art keywords
toner
iron
weight ratio
controlling weight
controlling
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
GB3881271A
Other languages
English (en)
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.)
AB Dick Co
Original Assignee
Multigraphics Inc
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 Multigraphics Inc filed Critical Multigraphics Inc
Publication of GB1367681A publication Critical patent/GB1367681A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
    • G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • 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
    • G03G15/0853—Detection or control means for the developer concentration the concentration being measured by magnetic means

Landscapes

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Automation & Control Theory (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Dry Development In Electrophotography (AREA)
GB3881271A 1970-08-21 1971-08-18 Method and apparatus for controlling weight ratio of toner to iron Expired GB1367681A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6590270A 1970-08-21 1970-08-21

Publications (1)

Publication Number Publication Date
GB1367681A true GB1367681A (en) 1974-09-18

Family

ID=22065914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3881271A Expired GB1367681A (en) 1970-08-21 1971-08-18 Method and apparatus for controlling weight ratio of toner to iron

Country Status (7)

Country Link
US (1) US3707134A (enrdf_load_stackoverflow)
JP (1) JPS524942B1 (enrdf_load_stackoverflow)
BE (1) BE771604A (enrdf_load_stackoverflow)
CA (1) CA978585A (enrdf_load_stackoverflow)
DE (1) DE2141870B2 (enrdf_load_stackoverflow)
FR (1) FR2104578A5 (enrdf_load_stackoverflow)
GB (1) GB1367681A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407501A1 (fr) * 1977-10-27 1979-05-25 Hitachi Ltd Systeme de reglage d'un revelateur dans un appareil de developpement
FR2481821A1 (fr) * 1980-05-02 1981-11-06 Gestetner Mfg Ltd Dispositif de developpement pour copieur electrophotographique a revelateur pigmentaire sec
EP0122729A1 (en) * 1983-03-21 1984-10-24 Minnesota Mining And Manufacturing Company Copy machine with document dependent control
EP0163136B1 (en) * 1984-04-27 1991-03-13 Kabushiki Kaisha Toshiba Device for detecting toner density

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3821938A (en) * 1971-12-17 1974-07-02 Ibm Toner usage sensing system
JPS5246095B2 (enrdf_load_stackoverflow) * 1973-05-25 1977-11-21
JPS5619637B2 (enrdf_load_stackoverflow) * 1973-06-20 1981-05-08
US3999119A (en) * 1975-03-26 1976-12-21 Xerox Corporation Measuring toner concentration
JPS52131729A (en) * 1976-04-28 1977-11-04 Ricoh Co Ltd Toner concentration detection circuit
JPS5349437A (en) * 1976-10-16 1978-05-04 Hitachi Ltd Toner density detector
JPS55161261A (en) * 1979-06-01 1980-12-15 Katsuragawa Denki Kk Toner replenishing method and its device
JPS5643556A (en) * 1979-09-19 1981-04-22 Toshiba Corp Concentration control device of developer
DE3149908A1 (de) * 1980-12-19 1982-09-02 Minolta Camera K.K., Osaka Verfahren zum steuern der tonerkonzentration fuer elektrofotografische kopiergeraete
US5166729A (en) * 1991-08-30 1992-11-24 Xerox Corporation Toner concentration sensing apparatus
US6248496B1 (en) * 2000-03-07 2001-06-19 Xerox Corporation Method of replenishing developer in a hybrid scavengeless development system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2671200A (en) * 1950-10-18 1954-03-02 Jerome F Lederer Safety signal device
US3475316A (en) * 1965-06-29 1969-10-28 Sherwin Williams Co Apparatus for measurement and control of nonvolatile components in liquid coating compositions
US3418163A (en) * 1965-12-27 1968-12-24 Sperry Rand Corp Magnetoresistive magnetostriction monitoring
US3527651A (en) * 1966-10-20 1970-09-08 Addressograph Multigraph Method of and apparatus for developing electrostatic images

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2407501A1 (fr) * 1977-10-27 1979-05-25 Hitachi Ltd Systeme de reglage d'un revelateur dans un appareil de developpement
FR2481821A1 (fr) * 1980-05-02 1981-11-06 Gestetner Mfg Ltd Dispositif de developpement pour copieur electrophotographique a revelateur pigmentaire sec
US4348979A (en) 1980-05-02 1982-09-14 Gestetner Manufacturing Limited Developer unit for dry toner electrophotographic copier
EP0122729A1 (en) * 1983-03-21 1984-10-24 Minnesota Mining And Manufacturing Company Copy machine with document dependent control
EP0163136B1 (en) * 1984-04-27 1991-03-13 Kabushiki Kaisha Toshiba Device for detecting toner density

Also Published As

Publication number Publication date
JPS524942B1 (enrdf_load_stackoverflow) 1977-02-08
DE2141870A1 (de) 1972-03-30
CA978585A (en) 1975-11-25
FR2104578A5 (enrdf_load_stackoverflow) 1972-04-14
DE2141870B2 (de) 1979-06-21
BE771604A (fr) 1971-12-31
US3707134A (en) 1972-12-26

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Legal Events

Date Code Title Description
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SPA Amended specification published
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee