ES386750A1 - Automatic developability control apparatus - Google Patents

Automatic developability control apparatus

Info

Publication number
ES386750A1
ES386750A1 ES386750A ES386750A ES386750A1 ES 386750 A1 ES386750 A1 ES 386750A1 ES 386750 A ES386750 A ES 386750A ES 386750 A ES386750 A ES 386750A ES 386750 A1 ES386750 A1 ES 386750A1
Authority
ES
Spain
Prior art keywords
toner
plates
photocell
light source
control apparatus
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
ES386750A
Other languages
Spanish (es)
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 ES386750A1 publication Critical patent/ES386750A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

A developability control system for a xerographic reproducing machine. The system includes two parallel-spaced NESA glass plates through which two-component developer material, including toner and carrier, flows. The plates are connected in a circuit wherein each is electrically charged alternately for equal periods of time for attracting and repelling toner. A light source is located at one side of the two plates while a photocell is located on the other side to sense the optical density of the sum toner deposit on the two plates at all operating times. This sensing is compared with light received by a second photocell, separated from the same light source by a filter, to cause the dispensing of toner to the developer at appropriate times.
ES386750A 1969-12-29 1970-12-22 Automatic developability control apparatus Expired ES386750A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88872769A 1969-12-29 1969-12-29

Publications (1)

Publication Number Publication Date
ES386750A1 true ES386750A1 (en) 1973-03-16

Family

ID=25393765

Family Applications (1)

Application Number Title Priority Date Filing Date
ES386750A Expired ES386750A1 (en) 1969-12-29 1970-12-22 Automatic developability control apparatus

Country Status (12)

Country Link
US (1) US3635373A (en)
JP (1) JPS508941B1 (en)
BE (1) BE760748A (en)
CA (1) CA923546A (en)
CH (1) CH524843A (en)
DE (1) DE2062961C3 (en)
ES (1) ES386750A1 (en)
FR (1) FR2077575B1 (en)
GB (1) GB1336590A (en)
NL (1) NL7018823A (en)
PL (1) PL84605B1 (en)
SE (1) SE362511B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873197A (en) * 1973-11-15 1975-03-25 Xerox Corp Apparatus for regulating the toner concentration in a electrophotographic device
US3926145A (en) * 1974-03-04 1975-12-16 Honeywell Inf Systems Toner concentration detector
US4043293A (en) * 1976-05-03 1977-08-23 Xerox Corporation Developability regulating apparatus
JPS53137860U (en) * 1977-04-06 1978-10-31
US4579253A (en) * 1977-05-17 1986-04-01 Savin Corporation Toner control system
JPS5438131A (en) * 1977-09-01 1979-03-22 Olympus Optical Co Ltd Toner concentration detecting method of dry type two component developer
US4346985A (en) * 1979-06-25 1982-08-31 Xerox Corporation Automatic development control
US4447145A (en) * 1982-04-30 1984-05-08 Xerox Corporation Charged particle sensor
US4633728A (en) * 1985-09-05 1987-01-06 Ford Motor Company Gear selector control for manual transmission
US4662313A (en) * 1985-10-23 1987-05-05 Xerox Corporation Image density controller
DE3542812A1 (en) * 1985-12-04 1987-06-11 Ford Werke Ag SWITCH LOCK FOR REVERSE GEAR OF A MULTI-SPEED CHANGEOVER GEARBOX
DE3806286A1 (en) * 1988-02-27 1989-08-31 Meteor Siegen Apparat Schmeck Device for controlling the toner concentration of a toner liquid in a copier
JP2000304693A (en) * 1999-04-16 2000-11-02 Nec Niigata Ltd Method and apparatus for measurement of concentration of developer as well as transfer apparatus
US20030113649A1 (en) * 2001-12-12 2003-06-19 Xerox Corporation Developer composition having improved noise signal ratio in an optical toner concentration sensing system
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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376854A (en) * 1966-06-01 1968-04-09 Xerox Corp Automatic toner dispensing control
US3526338A (en) * 1968-01-02 1970-09-01 Xerox Corp Method and controller for dispensing electroscopic material
US3430606A (en) * 1968-01-02 1969-03-04 Xerox Corp Electroscopic particle sensor

Also Published As

Publication number Publication date
CA923546A (en) 1973-03-27
GB1336590A (en) 1973-11-07
BE760748A (en) 1971-06-23
CH524843A (en) 1972-06-30
FR2077575A1 (en) 1971-10-29
DE2062961C3 (en) 1981-07-09
JPS508941B1 (en) 1975-04-08
PL84605B1 (en) 1976-04-30
US3635373A (en) 1972-01-18
DE2062961B2 (en) 1980-07-03
SE362511B (en) 1973-12-10
DE2062961A1 (en) 1971-07-01
FR2077575B1 (en) 1973-02-02
NL7018823A (en) 1971-07-01

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