US3873002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toner dispenser logic control
Assignee: Xerox Corp
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Filing: 1973-04-16
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Granted: 1975-03-25
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Expires: 1993-04-16
Abstract
Abstract A control device which regulates the dispensing of predetermined quantities of particles from a storage container to a mix for maintaining the concentration thereof substantially at a preselected level. The foregoing abstract is neither intended to define the invention disclosed in the specification, nor is it intended to be limiting as to the scope of the invention in any way.
Inventors
- 👤 James R Davidson
- 👤 Carol A Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:08
CPC Classifications
G; G05; G05D; G05D21/00; G05D21/02; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0848; G03G15/0849; G03G15/50; G03G15/5033; G03G15/5041; Y; Y10; Y10S; Y10S222/00; Y10S222/01
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
194 words
A control device for regulating the dispensing of predetermined quantities of particles from a storage container to a mix, including: means for detecting the concentration of particles in the mix, said detecting means being arranged to provide an electrical signal indicating that the particle concentration within the mix is beneath a predetermined level; and means for summing said detecting means electrical signals and providing a plurality of output signals each corresponding to a predetermined number of electrical signals, each output signal from said summing means being adapted to actuate the storage container for dispensing predetermined differing quantities of particles therefrom into the mix, said summing means provides a first output signal when the number of electrical signals from said detecting means is less than a first pre-selected sum, the first output signal being adapted to actuate the storage container for dispensing a first predetermined quantity of particles therefrom, and a second output signal when the number of electrical signals from said detecting means is intermediate the first pre-selected sum and a second pre-selected sum, the second output signal being adapted to actuate the storage container for dispensing a second predetermined quantity of particles therefrom.
Claim 2
Dependent Claim
194 words
A control device for regulating the dispensing of predetermined quantities of particles from a storage container to a mix, including: means for detecting the concentration of particles in the mix, said detecting means being arranged to provide an electrical signal indicating that the particle concentration within the mix is beneath a predetermined level; and means for summing said detecting means electrical signals and providing a plurality of output signals each corresponding to a predetermined number of electrical signals, each output signal from said summing means being adapted to actuate the storage container for dispensing predetermined differing quantities of particles therefrom into the mix, said summing means provides a first output signal when the number of electrical signals from said detecting means is less than a first pre-selected sum, the first output signal being adapted to actuate the storage container for dispensing a first predetermined quantity of particles therefrom, and a second output signal when the number of electrical signals from said detecting means is intermediate the first pre-selected sum and a second pre-selected sum, the second output signal being adapted to actuate the storage container for dispensing a second predetermined quantity of particles therefrom.
Claim 3
Dependent Claim
41 words
A device as recited in claim 1, further including means for actuating the storage container, in response to the signal from said summing means, to dispense an amount of particles from the storage container corresponding to the output signal furnished thereto.
Claim 4
Dependent Claim
93 words
A device as recited in claim 2, wherein said summing means includes: means for counting the number of electrical signals from said detecting means; means for generating the first output signal in response to said counting means indicating that the number of electrical signals from said detecting means is less than the first pre-selected number of electrical signals; and means, responsive to said counting means indicating that the number of electrical signals from said detecting means is intermediate the first and second preselected number of electrical signals, for developing the second output signal.
Claim 5
Dependent Claim
54 words
A device as recited in claim 3, further including means, responsive to said counting means indicating that the number of electrical signals from said detecting means is greater than the second preselected number thereof, for producing a signal adapted to prevent said actuating means from energizing the storage container for dispensing particles therefrom. Pg,24
Claim 6
Dependent Claim
44 words
A device as recited in claim 4 further including means for resetting said counting means to zero in response to said counting means indicating that the number of electrical signals from said detecting means is greater than the second preselected number of electrical signals.
Claim 7
Dependent Claim
51 words
A device as recited in claim 5, wherein the second predetermined quantity of particles dispensed from the storage container is greater than the first predetermined quantity of particles dispensed therefrom, the second predetermined quantity of dispensed particles being preferably about twice the amount of the first predetermined quantity of dispensed particles.
Claim 8
Dependent Claim
221 words
An electrophotographic printing machine of the type having a toner particle storage container arranged to dispense predetermined quantities of toner particles therefrom into a developer mix utilized in a development system thereof, including: means for detecting the concentration of toner particles in the developer mix, said detecting means being arranged to provide an electrical signal indicating that the toner particle concentration within the developer mix is beneath a predetermined level; and means for summing said detecting means electrical signals and providing a plurality of output signals each corresponding to a predetermined number of electrical signals, each output signal from said summing means being adapted to actuate the toner particle storage container for dispensing predetermined differing quantities of toner particles therefrom into the developer mix, said summing means provides a first output signal when the number of electrical signals from said detecting means is less than a first pre-selected sum, the first output signal being adapted to actuate the toner particle storage container for dispensing a first predetermined quantity of toner particles therefrom, and a second output signal when the number of electrical signals from said detecting means is intermediate the first pre-selected sum and a second pre-selected sum, the second output signal being adapted to actuate the toner particle storage container for dispensing a second predetermined quantity of toner particles therefrom.
Claim 9
Dependent Claim
221 words
An electrophotographic printing machine of the type having a toner particle storage container arranged to dispense predetermined quantities of toner particles therefrom into a developer mix utilized in a development system thereof, including: means for detecting the concentration of toner particles in the developer mix, said detecting means being arranged to provide an electrical signal indicating that the toner particle concentration within the developer mix is beneath a predetermined level; and means for summing said detecting means electrical signals and providing a plurality of output signals each corresponding to a predetermined number of electrical signals, each output signal from said summing means being adapted to actuate the toner particle storage container for dispensing predetermined differing quantities of toner particles therefrom into the developer mix, said summing means provides a first output signal when the number of electrical signals from said detecting means is less than a first pre-selected sum, the first output signal being adapted to actuate the toner particle storage container for dispensing a first predetermined quantity of toner particles therefrom, and a second output signal when the number of electrical signals from said detecting means is intermediate the first pre-selected sum and a second pre-selected sum, the second output signal being adapted to actuate the toner particle storage container for dispensing a second predetermined quantity of toner particles therefrom.
Claim 10
Dependent Claim
47 words
A printing machine as recited in claim 7, further including means for actuating the toner particle storage container, in response to the signal from said summing means to dispense an amount of toner particles from the toner particle storage container corresponding to the output signal furnished thereto.
Claim 11
Dependent Claim
94 words
A printing machine as recited in claim 8, wherein said summing means includes: means for counting the number of electrical signals from said detecting means; means for generating the first output signal in response to said counting means indicating that the number of electrical signals from said detecting means is less than the first preselected number of electrical signals; and means, responsive to said counting means indicating that the number of electrical signals from said detecting means is intermediate the first and second preselected number of electrical signals, for developing the second output signal.
Claim 12
Dependent Claim
57 words
A printing machine as recited in claim 9, further including means, responsive to said counting means indicating that the number of electrical signals from said detecting means is greater than the second preselected number thereof, for producing a signal adapted to prevent said actuating means from energizing the toner particle storage container for dispensing toner particles therefrom.
Claim 13
Dependent Claim
45 words
A printing machine as recited in claim 10, further including means for re-setting said counting means to zero in response to said counting means indicating that the number of electrical signals from said detecting means is greater than the second preselected number of electrical signals.
Claim 14
Dependent Claim
58 words
A printing machine as recited in claim 11, wherein the second predetermined quantity of toner particles dispensed from the toner particle storage container is greater than the first predetermined quantity of toner particles dispensed therefrom, the second predetermined quantity of dispensed toner particles being preferably about twice the amount of the first predetermined quantity of dispensed toner particles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |