GB1318895A - Device for measuring developability - Google Patents

Device for measuring developability

Info

Publication number
GB1318895A
GB1318895A GB4878270A GB4878270A GB1318895A GB 1318895 A GB1318895 A GB 1318895A GB 4878270 A GB4878270 A GB 4878270A GB 4878270 A GB4878270 A GB 4878270A GB 1318895 A GB1318895 A GB 1318895A
Authority
GB
United Kingdom
Prior art keywords
toner
concentration
dispenser
oct
measuring
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
GB4878270A
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 GB1318895A publication Critical patent/GB1318895A/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
    • G03G15/08—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
    • G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical 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
    • G03G15/55—Self-diagnostics; Malfunction or lifetime display
    • G03G15/553—Monitoring or warning means for exhaustion or lifetime end of consumables, e.g. indication of insufficient copy sheet quantity for a job
    • G03G15/556—Monitoring or warning means for exhaustion or lifetime end of consumables, e.g. indication of insufficient copy sheet quantity for a job for toner consumption, e.g. pixel counting, toner coverage detection or toner density measurement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S222/00—Dispensing
    • Y10S222/01—Xerography
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/166—Toner containing

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Wet Developing In Electrophotography (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

1318895 Electro-photography XEROX CORP 14 Oct 1970 [17 Oct 1969] 48782/70 Heading G2H In a process for recycling a solid toner/ carrier mixture to a xerographic development zone (the toner being replenished from a dispenser when its concentration falls below a predetermined threshhold value), a portion of the mixture bypasses the zone through a device 40 for measuring the concentration of the toner, the device comprising a spaced pair of transparent electrode plates 48 and 50 of alternating polarity (e. g. each second), a lamp L1, and a photo-cell P1, the output of which is dependent on the concentration of toner. When the concentration reaches the threshhold value, the toner dispenser is automatically actuated. If the dispenser is empty, the xerographic machine may be automatically shut down when a predetermined lower concentration of toner is reached.
GB4878270A 1969-10-17 1970-10-14 Device for measuring developability Expired GB1318895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86720869A 1969-10-17 1969-10-17

Publications (1)

Publication Number Publication Date
GB1318895A true GB1318895A (en) 1973-05-31

Family

ID=25349342

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4878270A Expired GB1318895A (en) 1969-10-17 1970-10-14 Device for measuring developability

Country Status (15)

Country Link
US (1) US3727065A (en)
JP (1) JPS508938B1 (en)
BE (1) BE757430A (en)
CA (1) CA934806A (en)
CH (1) CH514168A (en)
CS (1) CS169811B2 (en)
DE (1) DE2050021C3 (en)
ES (1) ES384593A1 (en)
FR (1) FR2066411A5 (en)
GB (1) GB1318895A (en)
GT (1) GT197017976A (en)
NL (1) NL166807C (en)
PL (1) PL81051B1 (en)
SE (1) SE369114B (en)
SU (1) SU597347A3 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7210357A (en) * 1971-08-06 1973-02-08
US3791744A (en) * 1972-02-22 1974-02-12 Dyk Res Corp Van Xerographic toner concentration measuring apparatus and method
JPS5925220B2 (en) * 1973-07-26 1984-06-15 株式会社リコー Toner remaining amount detection device for electrophotographic dry developing device
US3872825A (en) * 1973-08-06 1975-03-25 Xerox Corp Particle concentration detector
JPS5092180A (en) * 1973-12-14 1975-07-23
US3926145A (en) * 1974-03-04 1975-12-16 Honeywell Inf Systems Toner concentration detector
JPS51140296A (en) * 1975-05-30 1976-12-03 Seiko Seiki Co Ltd Apparatus for compensating for wearing down of grindstone of grinding machine
US4043293A (en) * 1976-05-03 1977-08-23 Xerox Corporation Developability regulating apparatus
US4111151A (en) * 1977-05-19 1978-09-05 Xerox Corporation Multi-particle developability regulating system
US4078520A (en) * 1977-06-02 1978-03-14 Xerox Corporation Vibrating screen filter for toner density measuring apparatus
DE2927477C2 (en) * 1978-07-08 1982-03-11 Ricoh Co., Ltd., Tokyo Apparatus and method for measuring the developability of a powdered developer for electrostatography
US4346985A (en) * 1979-06-25 1982-08-31 Xerox Corporation Automatic development control
US4431300A (en) * 1982-02-16 1984-02-14 Xerox Corporation Automatic developability sensing in electrophotographic printing
JPS58159551U (en) * 1982-04-20 1983-10-24 オリンパス光学工業株式会社 Toner concentration detection device
US4662313A (en) * 1985-10-23 1987-05-05 Xerox Corporation Image density controller
US5426486A (en) * 1994-02-22 1995-06-20 Eastman Kodak Company Toner monitor having magnetic field control
JP2842330B2 (en) * 1995-09-21 1999-01-06 日本電気株式会社 Electrostatic inkjet recording device
CN100504654C (en) * 2002-06-03 2009-06-24 株式会社理光 Color tone agent conveying equipment and image forming equipment
JP6004799B2 (en) * 2012-07-10 2016-10-12 キヤノン株式会社 Developer container and image forming apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094049A (en) * 1961-02-03 1963-06-18 Xerox Corp Xerographic developer measuring apparatus
US3233781A (en) * 1963-05-08 1966-02-08 Savin Business Machines Corp Toner control system
US3376854A (en) * 1966-06-01 1968-04-09 Xerox Corp Automatic toner dispensing control
US3399652A (en) * 1967-06-14 1968-09-03 Addressograph Multigraph Automatic toner concentrate detector
US3430606A (en) * 1968-01-02 1969-03-04 Xerox Corp Electroscopic particle sensor
US3526338A (en) * 1968-01-02 1970-09-01 Xerox Corp Method and controller for dispensing electroscopic material

Also Published As

Publication number Publication date
DE2050021C3 (en) 1978-12-21
BE757430A (en) 1971-04-13
US3727065A (en) 1973-04-10
GT197017976A (en) 1972-03-17
ES384593A1 (en) 1973-01-16
NL166807C (en) 1981-09-15
SU597347A3 (en) 1978-03-05
JPS508938B1 (en) 1975-04-08
FR2066411A5 (en) 1971-08-06
CS169811B2 (en) 1976-07-29
DE2050021A1 (en) 1971-04-29
CA934806A (en) 1973-10-02
NL166807B (en) 1981-04-15
CH514168A (en) 1971-10-15
NL7014901A (en) 1971-04-20
PL81051B1 (en) 1975-08-30
DE2050021B2 (en) 1978-05-03
SE369114B (en) 1974-08-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee