GB1211588A - Electrostatic printer - Google Patents

Electrostatic printer

Info

Publication number
GB1211588A
GB1211588A GB30072/68A GB3007268A GB1211588A GB 1211588 A GB1211588 A GB 1211588A GB 30072/68 A GB30072/68 A GB 30072/68A GB 3007268 A GB3007268 A GB 3007268A GB 1211588 A GB1211588 A GB 1211588A
Authority
GB
United Kingdom
Prior art keywords
toner
signals
supplied
developer
ray tube
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
GB30072/68A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1211588A publication Critical patent/GB1211588A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
    • G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
    • G06K15/14—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by electrographic printing, e.g. xerography; by magnetographic printing
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Dry Development In Electrophotography (AREA)
  • Wet Developing In Electrophotography (AREA)

Abstract

1,211,588. Electro-photographic apparatus. INTERNATIONAL BUSINESS MACHINES CORP. June 24, 1968 [July 12, 1967; July 13, 1967], No.30072/68. Heading G2H. An apparatus in which latent electrostatic images are formed on a record medium by an image generator has a developing apparatus supplied with developer or a constituent thereof under the control of signals applied to the image generator. A cathode ray tube 3, Fig.1, produces an image on a uniformly charged drum 1 the latent image being developed by developer 7 supplied by a cascade developing apparatus 6. The developer 7 contains toner and carrier. The cathode ray tube 3 is supplied from a signal source 20. Toner feed signal means 25 are supplied with intensity and on/off signals along lines 24 and 26 respectively. The intensity signals are integrated in the means 25 and fed to a toner supply actuator 28 which controls the actuation of a toner supply hopper 30. The toner controlled may alternatively be liquid toner. The signal means 25 may be as described with reference to Fig.2 (not shown) in which the intensity signals are applied to a capacitor (41) which is charged as signals are applied to line (24). A transistor (52) conducts when the voltage on line (51) exceeds a predetermined level, thereby switching transistor (53) off. Pulses are applied along line (57) to a multivibrator (62). In a modification of the toner feed signal means 25, Fig.1, the head (H) Fig.3 (not shown) of toner controls sensing mechanism which actuates an arm (194) co-operating with a resistance (195) such that when the toner level is high a higher charge on a capacitor (141) will be required before toner replenishment is effected by an actuator (201). Instead of integrating signals supplied to the cathode ray tube individual signals may be counted by a counter (222) Fig.4 (not shown) which after a preset number of signals delivers a signal to a driver (224) which operates a relay (226). Relay (226) closes a circuit to an actuator (227) which controls a toner metering device (229). Signals may also be derived from a high speed printer Fig.5 (not shown) to control a toner distributer (236).
GB30072/68A 1967-07-12 1968-06-24 Electrostatic printer Expired GB1211588A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US65284667A 1967-07-12 1967-07-12
US653140A US3409901A (en) 1967-07-12 1967-07-13 Automatic toner concentration control for use with crt input

Publications (1)

Publication Number Publication Date
GB1211588A true GB1211588A (en) 1970-11-11

Family

ID=27096376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30072/68A Expired GB1211588A (en) 1967-07-12 1968-06-24 Electrostatic printer

Country Status (4)

Country Link
US (1) US3409901A (en)
DE (1) DE1772826B2 (en)
FR (1) FR95209E (en)
GB (1) GB1211588A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158078A1 (en) * 1984-02-27 1985-10-16 Oki Electric Industry Company, Limited Dry-type developing device for electrophotography

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3526338A (en) * 1968-01-02 1970-09-01 Xerox Corp Method and controller for dispensing electroscopic material
US3604939A (en) * 1968-05-24 1971-09-14 Xerox Corp Toner concentration sensing apparatus having plural sensors and a flow control means for each sensor
US3704468A (en) * 1969-04-25 1972-11-28 Ricoh Kk Electronic graphic recording system
US3659556A (en) * 1970-08-19 1972-05-02 Xerox Corp Programmable toner dispenser
US3892672A (en) * 1970-08-21 1975-07-01 Addressograph Multigraph Automatic toner concentrate detector and control device
US3757351A (en) * 1971-01-04 1973-09-04 Corning Glass Works High speed electostatic printing tube using a microchannel plate
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
AU467941B2 (en) * 1971-09-25 1975-12-18 Hoechst Aktiengesellschaft Method of and apparatus for measuring or measuring and replacing toner consumed inan electrophotographic reproduction machine
US3873002A (en) * 1973-04-16 1975-03-25 Xerox Corp Toner dispenser logic control
JPS613004Y2 (en) * 1975-01-13 1986-01-30
GB1541487A (en) * 1975-03-20 1979-03-07 Matsushita Electric Ind Co Ltd Time switches
JPS5243439A (en) * 1975-10-03 1977-04-05 Ricoh Co Ltd Generator for the bias voltage for the electrophotographic copying machine
US4064834A (en) * 1976-11-19 1977-12-27 A. B. Dick Company Apparatus for sensing the concentration of toner in a developer mix
US4135642A (en) * 1977-06-02 1979-01-23 Xerox Corporation Wiper arrangement for toner level sensor
JPS5528010A (en) * 1978-08-18 1980-02-28 Konishiroku Photo Ind Co Ltd Image density adjustment method for information compound recording device
EP0127916B1 (en) * 1983-06-03 1987-10-28 Agfa-Gevaert N.V. Toner dispensing control
DE3469387D1 (en) * 1983-06-03 1988-03-24 Agfa Gevaert Nv Toner dispensing control
DE3376890D1 (en) * 1983-11-01 1988-07-07 Agfa-Gevaert Naamloze Vennootschap
DE3531775A1 (en) * 1984-09-10 1986-03-27 Sharp K.K., Osaka PHOTOCOPYER
US4695762A (en) * 1985-06-28 1987-09-22 American Telephone And Telegraph Company, At&T Bell Laboratories Electron beam pumped rod-like light emitters
US4807241A (en) * 1985-06-28 1989-02-21 American Telephone And Telegraph Company At&T Bell Laboratories Electron beam pumped laser
US4721978A (en) * 1986-10-31 1988-01-26 Xerox Corporation Color toner concentration control system
US4847659A (en) * 1987-05-21 1989-07-11 Eastman Kodak Company Apparatus for controlling toner replenishment in electrostatographic printer
FR2639726B1 (en) * 1988-11-29 1991-01-11 Bull Sa DEVICE FOR THE REINTRODUCTION, INTO A TANK OPEN TO AIR, OF SOLID DEVELOPER PARTICLES WHICH HAVE BEEN SEPARATED FROM A CARRIER GAS STREAM
GB2259583B (en) * 1991-09-11 1995-08-16 Xerox Corp Toner monitoring in an electrostatographic printing/digital copying machine
US5279224A (en) * 1992-04-17 1994-01-18 Rockwell International Corporation Charge imaging system for a printing press
US5204699A (en) * 1992-09-14 1993-04-20 Xerox Corporation Apparatus for estimating toner usage
US5349377A (en) * 1993-05-17 1994-09-20 Xerox Corporation Printer toner usage indicator with image weighted calculation
US5592298A (en) * 1994-06-03 1997-01-07 Xerox Corporation Apparatus and method for detecting digitized image area coverage by counting pixels
US5760795A (en) * 1995-09-27 1998-06-02 Xerox Corporation System and method for overriding a low marking material status in a facsimile environment
US5706037A (en) * 1995-09-28 1998-01-06 Xerox Corporation System and method for overriding a low marking material status in a facsimile environment
US5636032A (en) * 1995-10-11 1997-06-03 Xerox Corporation System and method for informing a user of a marking material status in a printing environment
US6029021A (en) * 1996-12-20 2000-02-22 Fuji Xerox Co., Ltd. Image forming apparatus having an adaptive mode density control system
US5937225A (en) * 1997-07-21 1999-08-10 International Business Machines Corporation Pixel counting toner or ink use monitor and pixel counting method for monitoring the toner or ink use
US5887221A (en) * 1997-10-20 1999-03-23 Xerox Corporation Signature sensing for optimum toner control with donor roll
US6975422B2 (en) * 2000-12-19 2005-12-13 Xerox Corporation Method for providing information for a customer replaceable unit
US6584290B2 (en) 2000-12-19 2003-06-24 Xerox Corporation System for providing information for a customer replaceable unit
US7124097B2 (en) * 2002-01-23 2006-10-17 Xerox Corporation Method and system for ordering a consumable for a device
US7663770B2 (en) * 2002-01-25 2010-02-16 Xerox Corporation Method and system for shopping for a consumable for a device
WO2009014520A1 (en) * 2007-07-25 2009-01-29 Hewlett-Packard Development Company, L.P. Stabilization of ink concentration in a solid ink add system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777745A (en) * 1952-10-04 1957-01-15 Gen Dynamics Corp Electrostatic recording apparatus
US2956487A (en) * 1955-03-23 1960-10-18 Rca Corp Electrostatic printing
US2890968A (en) * 1955-06-02 1959-06-16 Rca Corp Electrostatic printing process and developer composition therefor
US3348522A (en) * 1962-08-28 1967-10-24 Xerox Corp Automatic toner control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158078A1 (en) * 1984-02-27 1985-10-16 Oki Electric Industry Company, Limited Dry-type developing device for electrophotography

Also Published As

Publication number Publication date
FR95209E (en) 1970-08-07
DE1772826B2 (en) 1975-09-11
US3409901A (en) 1968-11-05
DE1772826A1 (en) 1971-06-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee