ES409699A1 - Toner usage sensing system - Google Patents
Toner usage sensing systemInfo
- Publication number
- ES409699A1 ES409699A1 ES409699A ES409699A ES409699A1 ES 409699 A1 ES409699 A1 ES 409699A1 ES 409699 A ES409699 A ES 409699A ES 409699 A ES409699 A ES 409699A ES 409699 A1 ES409699 A1 ES 409699A1
- Authority
- ES
- Spain
- Prior art keywords
- toner
- charge
- sensed
- developer material
- amount
- 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
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0605—Control of flow characterised by the use of electric means specially adapted for solid materials
-
- 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
- G03G15/0851—Detection or control means for the developer concentration the concentration being measured by electrical 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
- G03G15/06—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
- G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
- G03G15/0891—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for conveying or circulating developer, e.g. augers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/0634—Developing device
- G03G2215/0636—Specific type of dry developer device
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Dry Development In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
A toner usage sensing system for an electrostatic reproduction apparatus which utilizes multicomponent developer material including electrostatically charged toner to develop electrostatic latent images on a photosensitive plate directly senses the amount of toner consumed by the reproduction process. Since the average toner body charge (coulomb/gram) is constant for a given desired toner concentration, the weight of the electrostatically charged toner consumed in sensed by measuring the charge removed from the developer material during the reproduction process. The developer unit containing the developer material is electrically isolated from the remainder of the reproduction apparatus and grounded through a single connection. The current in the ground connection returns charge to the developer unit sufficient to replace the charge removed and is sensed to obtain a measurement of the toner consumed. A measured amount of toner is added to the developer material when a preselected amount of charge has been sensed as being removed. In one embodiment, a DC motor drives the toner replenisher and rotates an amount proportional to the sensed current thereby providing a mechanical storage of the incremental amounts of toner removed on widely spaced reproduction runs.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00209040A US3821938A (en) | 1971-12-17 | 1971-12-17 | Toner usage sensing system |
Publications (1)
Publication Number | Publication Date |
---|---|
ES409699A1 true ES409699A1 (en) | 1975-12-16 |
Family
ID=22777076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES409699A Expired ES409699A1 (en) | 1971-12-17 | 1972-12-16 | Toner usage sensing system |
Country Status (14)
Country | Link |
---|---|
US (1) | US3821938A (en) |
JP (1) | JPS4869528A (en) |
AR (1) | AR205242A1 (en) |
AU (1) | AU4874172A (en) |
BR (1) | BR7208877D0 (en) |
CA (1) | CA1010493A (en) |
CH (1) | CH539870A (en) |
DE (1) | DE2254883A1 (en) |
ES (1) | ES409699A1 (en) |
FR (1) | FR2165442A5 (en) |
GB (1) | GB1372999A (en) |
IT (1) | IT967830B (en) |
NL (1) | NL7215310A (en) |
SE (1) | SE375634B (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5619637B2 (en) * | 1973-06-20 | 1981-05-08 | ||
JPS613004Y2 (en) * | 1975-01-13 | 1986-01-30 | ||
US4026643A (en) * | 1975-08-22 | 1977-05-31 | Xerox Corporation | Apparatus and method for measurement of the ratio of toner particle electrostatic charge to toner particle mass in electrostatographic devices |
JPS52131729A (en) * | 1976-04-28 | 1977-11-04 | Ricoh Co Ltd | Toner concentration detection circuit |
US4064834A (en) * | 1976-11-19 | 1977-12-27 | A. B. Dick Company | Apparatus for sensing the concentration of toner in a developer mix |
US4163787A (en) | 1977-03-14 | 1979-08-07 | The Dow Chemical Company | Substituted pyridine methyl esters of cyclopropane carboxylic acids and their use as insecticides |
JPS5437758A (en) * | 1977-08-30 | 1979-03-20 | Ricoh Co Ltd | Electrostatic latent image developing method |
US4343548A (en) * | 1980-05-19 | 1982-08-10 | Xerox Corporation | Control system for regulating the concentration of toner particles within a developer mixture |
US4524088A (en) * | 1983-01-31 | 1985-06-18 | Magnetic Technologies Corp. | Method and apparatus for controlling the thickness of developer on an applicator, such as a magnetic brush, in electrostatic reproduction |
US4492179A (en) * | 1983-06-16 | 1985-01-08 | Xerox Corporation | Control system for regulating the dispensing of marking particles in an electrophotographic printing machine |
US4972230A (en) * | 1989-10-31 | 1990-11-20 | Xerox Corporation | Toner usage detector based on current biasing mixing means |
US5006897A (en) * | 1990-07-02 | 1991-04-09 | Eastman Kodak Company | Determination of charge-to-mass ratio |
US5459556A (en) * | 1994-01-12 | 1995-10-17 | Xerox Corporation | Toner consumption rate gauge for printers and copiers |
JP3269949B2 (en) * | 1995-10-03 | 2002-04-02 | 京セラミタ株式会社 | Method for measuring toner concentration and charge amount in two-component developer |
JP3199993B2 (en) * | 1995-10-23 | 2001-08-20 | シャープ株式会社 | Developer charge amount measuring device |
FR2764374B1 (en) * | 1997-06-10 | 1999-08-06 | Stolz Sequipag | DEVICE FOR CONTROLLING THE FLOW OF A PRODUCT CONTAINED IN AN ENCLOSURE |
US6248496B1 (en) * | 2000-03-07 | 2001-06-19 | Xerox Corporation | Method of replenishing developer in a hybrid scavengeless development system |
CN100335977C (en) * | 2001-12-14 | 2007-09-05 | 三洋化成工业株式会社 | Resin for toner binder and toner composition |
US7546048B2 (en) * | 2006-01-12 | 2009-06-09 | Sun Chemical Corporation | Method for determining ink usage efficiency in commercial printing processes using pigments and quantitative tests |
US8155540B2 (en) * | 2010-06-02 | 2012-04-10 | Xerox Corporation | Optimized limit gain compensation for dispense time accumulators of toner concentration control |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3527651A (en) * | 1966-10-20 | 1970-09-08 | Addressograph Multigraph | Method of and apparatus for developing electrostatic images |
US3553464A (en) * | 1967-03-27 | 1971-01-05 | Ricoh Kk | Device for detecting the density of developer in an electrostatographic duplicator |
US3399652A (en) * | 1967-06-14 | 1968-09-03 | Addressograph Multigraph | Automatic toner concentrate detector |
US3682132A (en) * | 1969-03-03 | 1972-08-08 | Xerox Corp | Automatic developer controller |
US3572551A (en) * | 1969-03-27 | 1971-03-30 | Rca Corp | Apparatus for monitoring and controlling the concentration of toner in a developer mix |
BE757197A (en) * | 1969-10-09 | 1971-03-16 | Rca Corp | DEVICE FOR MONITORING AND ADJUSTING THE CONCENTRATION OF POWDER PARTICLES IN A MIXTURE OF POWDER AND MAGNETIC PARTICLES |
CA939732A (en) * | 1969-11-11 | 1974-01-08 | Masayoshi Furuichi | Apparatus for supplementing toner in electrophotographic machines |
US3654893A (en) * | 1970-05-01 | 1972-04-11 | Eastman Kodak Co | Automatic bias control for electrostatic development |
US3674532A (en) * | 1970-07-23 | 1972-07-04 | Eastman Kodak Co | Control for bias of magnetic brush and method |
US3707134A (en) * | 1970-08-21 | 1972-12-26 | Addressograph Multigraph | Automatic toner concentrate detector and control device |
US3678896A (en) * | 1971-01-28 | 1972-07-25 | Xerox Corp | Conveyor system |
US3674353A (en) * | 1971-07-01 | 1972-07-04 | Eastman Kodak Co | Toner concentration control apparatus |
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 |
-
1971
- 1971-12-17 US US00209040A patent/US3821938A/en not_active Expired - Lifetime
-
1972
- 1972-01-01 AR AR245558A patent/AR205242A1/en active
- 1972-09-25 IT IT29631/72A patent/IT967830B/en active
- 1972-11-02 GB GB5045772A patent/GB1372999A/en not_active Expired
- 1972-11-09 DE DE2254883A patent/DE2254883A1/en active Pending
- 1972-11-10 JP JP47112228A patent/JPS4869528A/ja active Pending
- 1972-11-10 AU AU48741/72A patent/AU4874172A/en not_active Expired
- 1972-11-13 NL NL7215310A patent/NL7215310A/xx not_active Application Discontinuation
- 1972-11-17 SE SE7214970A patent/SE375634B/xx unknown
- 1972-11-28 CH CH1734672A patent/CH539870A/en not_active IP Right Cessation
- 1972-11-29 FR FR7243284A patent/FR2165442A5/fr not_active Expired
- 1972-12-05 CA CA158,260A patent/CA1010493A/en not_active Expired
- 1972-12-15 BR BR8877/72A patent/BR7208877D0/en unknown
- 1972-12-16 ES ES409699A patent/ES409699A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH539870A (en) | 1973-07-31 |
SE375634B (en) | 1975-04-21 |
IT967830B (en) | 1974-03-11 |
JPS4869528A (en) | 1973-09-21 |
GB1372999A (en) | 1974-11-06 |
US3821938A (en) | 1974-07-02 |
AR205242A1 (en) | 1976-04-21 |
DE2254883A1 (en) | 1973-06-28 |
NL7215310A (en) | 1973-06-19 |
FR2165442A5 (en) | 1973-08-03 |
AU4874172A (en) | 1974-05-16 |
BR7208877D0 (en) | 1974-01-03 |
CA1010493A (en) | 1977-05-17 |
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