GB1186775A - Automatic Toner Dispensing Control - Google Patents

Automatic Toner Dispensing Control

Info

Publication number
GB1186775A
GB1186775A GB2412267A GB2412267A GB1186775A GB 1186775 A GB1186775 A GB 1186775A GB 2412267 A GB2412267 A GB 2412267A GB 2412267 A GB2412267 A GB 2412267A GB 1186775 A GB1186775 A GB 1186775A
Authority
GB
United Kingdom
Prior art keywords
toner
plate
photo
accumulation
cell
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
GB2412267A
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 Ltd
Original Assignee
Rank Xerox Ltd
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 Rank Xerox Ltd filed Critical Rank Xerox Ltd
Publication of GB1186775A publication Critical patent/GB1186775A/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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2499—Mixture condition maintaining or sensing
    • Y10T137/2509—By optical or chemical property

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Cleaning In Electrography (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

1,186,775. Developing electrostatic images. RANK XEROX Ltd. May 24, 1967 [June 1, 1966], No. 24122/67. Heading G2H. The concentration of toner in developer material is controlled by a photo-cell P1 which in cooperation with a light source L-1 detects the accumulation of toner on a plate 42 across which developer is directed. The plate 42 is a thin glass sheet having a transparent layer of conductive oxide apart from areas 46 and 44. Developer material flows across the plate in the direction of arrow 42, but accumulates on the area 44 which is electrically connected to a supply by a switch 51, 52. The photo-cell P1 is included in a bridge circuit, imbalance of which due to a reduction in the density of the accumulation of toner on the area 44 as a result of toner depletion operates a Schmidt trigger 66 connected to an amplifier 67 which energizes a solenoid 68. Switch S-1 then closes to energize motor M to actuate a device 32 which effects toner replenishment.
GB2412267A 1966-06-01 1967-05-24 Automatic Toner Dispensing Control Expired GB1186775A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55452266 US3376854A (en) 1966-06-01 1966-06-01 Automatic toner dispensing control

Publications (1)

Publication Number Publication Date
GB1186775A true GB1186775A (en) 1970-04-02

Family

ID=24213688

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2412267A Expired GB1186775A (en) 1966-06-01 1967-05-24 Automatic Toner Dispensing Control

Country Status (19)

Country Link
US (1) US3376854A (en)
JP (1) JPS503652B1 (en)
AT (1) AT279352B (en)
BE (1) BE699115A (en)
CH (1) CH473409A (en)
CS (1) CS160633B2 (en)
DE (1) DE1572370C3 (en)
DK (1) DK116114B (en)
ES (1) ES340983A1 (en)
FI (1) FI50744C (en)
GB (1) GB1186775A (en)
GR (1) GR33692B (en)
IL (1) IL28022A (en)
LU (1) LU53713A1 (en)
NL (1) NL157119B (en)
NO (1) NO128039B (en)
PL (1) PL69794B1 (en)
SE (1) SE391817B (en)
SU (1) SU494887A3 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524066A (en) * 1966-08-22 1970-08-11 Monsanto Co Fluid measurement system having sample chamber with opposed reflecting members for causing multiple reflections
US3527651A (en) * 1966-10-20 1970-09-08 Addressograph Multigraph Method of and apparatus for developing electrostatic images
US3453045A (en) * 1967-03-23 1969-07-01 Xerox Corp Xerographic development apparatus
US3553464A (en) * 1967-03-27 1971-01-05 Ricoh Kk Device for detecting the density of developer in an electrostatographic duplicator
US3430606A (en) * 1968-01-02 1969-03-04 Xerox Corp Electroscopic particle sensor
SE355090B (en) * 1968-01-02 1973-04-02 Rank Xerox Ltd
BE757430A (en) * 1969-10-17 1971-04-13 Xerox Corp AUTOMATIC DEVELOPMENT CONTROL SYSTEM
US3757999A (en) * 1969-10-17 1973-09-11 Xerox Corp Automatic developability control system for electrostatic recording apparatus
US3635373A (en) * 1969-12-29 1972-01-18 Xerox Corp Automatic developability control apparatus
US3739800A (en) * 1971-05-04 1973-06-19 Copystatics Mfg Corp Toner supply system for copying machine
NL7210357A (en) * 1971-08-06 1973-02-08
DE2152592C3 (en) * 1971-10-22 1975-11-27 Hoechst Ag, 6000 Frankfurt Toner replenisher in an electrophotographic developing machine
US3692403A (en) * 1971-12-23 1972-09-19 Xerox Corp Automatic control of toner concentrations
US3777173A (en) * 1972-02-22 1973-12-04 Dyke Res Van Xerographic toner concentration measuring apparatus and method
US3872824A (en) * 1972-02-22 1975-03-25 Dyk Research Corp Van Xerographic toner concentration control apparatus
US3867640A (en) * 1972-03-09 1975-02-18 Levy Co Edward C Dust sampling system
US3817616A (en) * 1972-10-06 1974-06-18 Xerox Corp Thermal chamber for a developability regulating apparatus
JPS5619637B2 (en) * 1973-06-20 1981-05-08
US3926338A (en) * 1973-11-05 1975-12-16 Xerox Corp Thermally insensitive particle concentration controller
JPS613004Y2 (en) * 1975-01-13 1986-01-30
JPS5438131A (en) * 1977-09-01 1979-03-22 Olympus Optical Co Ltd Toner concentration detecting method of dry type two component developer
EP0086516B1 (en) * 1982-02-11 1986-05-28 Agfa-Gevaert N.V. Xerographic copying apparatus
US4662313A (en) * 1985-10-23 1987-05-05 Xerox Corporation Image density controller

Also Published As

Publication number Publication date
CS160633B2 (en) 1975-03-28
BE699115A (en) 1967-11-27
ES340983A1 (en) 1968-06-16
NL157119B (en) 1978-06-15
FI50744C (en) 1976-06-10
NL6706937A (en) 1967-12-04
PL69794B1 (en) 1973-10-31
IL28022A (en) 1973-03-30
SE391817B (en) 1977-02-28
AT279352B (en) 1970-03-10
DE1572370A1 (en) 1970-02-12
DK116114B (en) 1969-12-08
GR33692B (en) 1968-01-15
NO128039B (en) 1973-09-17
DE1572370C3 (en) 1979-10-25
FI50744B (en) 1976-03-01
US3376854A (en) 1968-04-09
SU494887A3 (en) 1975-12-05
CH473409A (en) 1969-05-31
DE1572370B2 (en) 1979-03-08
LU53713A1 (en) 1968-02-21
JPS503652B1 (en) 1975-02-07

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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