FR2104578A5 - - Google Patents

Info

Publication number
FR2104578A5
FR2104578A5 FR7130362A FR7130362A FR2104578A5 FR 2104578 A5 FR2104578 A5 FR 2104578A5 FR 7130362 A FR7130362 A FR 7130362A FR 7130362 A FR7130362 A FR 7130362A FR 2104578 A5 FR2104578 A5 FR 2104578A5
Authority
FR
France
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
FR7130362A
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR2104578A5 publication Critical patent/FR2104578A5/fr
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)
FR7130362A 1970-08-21 1971-08-20 Expired FR2104578A5 (enrdf_load_html_response)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR2104578A5 true FR2104578A5 (enrdf_load_html_response) 1972-04-14

Family

ID=22065914

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7130362A Expired FR2104578A5 (enrdf_load_html_response) 1970-08-21 1971-08-20

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368068A1 (fr) * 1976-10-16 1978-05-12 Hitachi Ltd Dispositif de detection de la concentration de la poudre dans un revelateur

Families Citing this family (14)

* 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_html_response) * 1973-05-25 1977-11-21
JPS5619637B2 (enrdf_load_html_response) * 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
US4270487A (en) * 1977-10-27 1981-06-02 Hitachi, Ltd. Developer regulating device in developing apparatus
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
GB2076314B (en) 1980-05-02 1983-09-28 Gestetner Mfg Ltd Magnetic brush developer unit for photocopier
DE3149908A1 (de) * 1980-12-19 1982-09-02 Minolta Camera K.K., Osaka Verfahren zum steuern der tonerkonzentration fuer elektrofotografische kopiergeraete
US4486090A (en) * 1983-03-21 1984-12-04 Minnesota Mining And Manufacturing Company Copy machine with unauthorized copy prevention
JPS60229074A (ja) * 1984-04-27 1985-11-14 Toshiba Corp トナ−濃度検出装置
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368068A1 (fr) * 1976-10-16 1978-05-12 Hitachi Ltd Dispositif de detection de la concentration de la poudre dans un revelateur

Also Published As

Publication number Publication date
CA978585A (en) 1975-11-25
DE2141870A1 (de) 1972-03-30
US3707134A (en) 1972-12-26
GB1367681A (en) 1974-09-18
BE771604A (fr) 1971-12-31
DE2141870B2 (de) 1979-06-21
JPS524942B1 (enrdf_load_html_response) 1977-02-08

Similar Documents

Publication Publication Date Title
CH1353371A4 (enrdf_load_html_response)
FR2104578A5 (enrdf_load_html_response)
AU1473870A (enrdf_load_html_response)
AU2044470A (enrdf_load_html_response)
AU1833270A (enrdf_load_html_response)
AU2130570A (enrdf_load_html_response)
AU1716970A (enrdf_load_html_response)
AU1517670A (enrdf_load_html_response)
AU1326870A (enrdf_load_html_response)
AU1336970A (enrdf_load_html_response)
AU2017870A (enrdf_load_html_response)
AU2085370A (enrdf_load_html_response)
AU2131570A (enrdf_load_html_response)
AU1603270A (enrdf_load_html_response)
AU1918570A (enrdf_load_html_response)
AU2144270A (enrdf_load_html_response)
AU1974970A (enrdf_load_html_response)
AU1943370A (enrdf_load_html_response)
AU1343870A (enrdf_load_html_response)
AU1969370A (enrdf_load_html_response)
AU2115870A (enrdf_load_html_response)
AU2112570A (enrdf_load_html_response)
AU1581370A (enrdf_load_html_response)
AU2061170A (enrdf_load_html_response)
AU1591370A (enrdf_load_html_response)

Legal Events

Date Code Title Description
ST Notification of lapse