US5749019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Look up table to control non-linear xerographic process
Assignee: Xerox Corp
•
Filing: 1996-09-09
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Granted: 1998-05-05
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Expires: 2016-09-09
Abstract
Abstract An electrostatographic printing machine having an imaging member, operating components, and a control system including a sensor, compensator, and look up table for adjusting the operating components. The sensor signal provides a suitable indication of an operating component condition such as a developer unit or a photoreceptor charging device. A compensator responds to the sensor signal to provide a non-linear adjustment signal and the look up table converts the non-linear adjustment signal to a linear adjustment signal. A device such as a charging corotron or developer power supply responds to the linear adjustment signal to appropriately adjust the operating component.
Inventors
- 👤 Lingappa K. Mestha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:30
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/50; G03G15/5033; G03G15/5037; G03G2215/00; G03G2215/00025; G03G2215/00029; G03G2215/00033; G03G2215/00037; G03G2215/00054
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
136 words
An electrostatographic printing machine having an imaging member with a surface voltage potential on a portion thereof, the electrostatographic printing machine including a control system having set point parameters with operating ranges comprising: a sensor to measure the surface voltage potential, a device for changing the set point parameters, a first look up table responsive to the changing of the set point parameters to provide a first adjustment to the surface voltage potential, the first adjustment to the surface voltage potential placing the control in a modified operating range, and a second look up table responsive to the changing of the set point parameters to provide a second adjustment to the surface voltage potential, the second adjustment to the surface voltage potential placing the control in a relatively linear control mode within the modified operating range.
Claim 2
Dependent Claim
136 words
An electrostatographic printing machine having an imaging member with a surface voltage potential on a portion thereof, the electrostatographic printing machine including a control system having set point parameters with operating ranges comprising: a sensor to measure the surface voltage potential, a device for changing the set point parameters, a first look up table responsive to the changing of the set point parameters to provide a first adjustment to the surface voltage potential, the first adjustment to the surface voltage potential placing the control in a modified operating range, and a second look up table responsive to the changing of the set point parameters to provide a second adjustment to the surface voltage potential, the second adjustment to the surface voltage potential placing the control in a relatively linear control mode within the modified operating range.
Claim 3
Dependent Claim
30 words
The electrostatographic printing machine of claim 1 including summing nodes responsive to the changing of the set point parameters to provide the linear control mode within the modified operating range.
Claim 4
Dependent Claim
19 words
The electrostatographic printing machine of claim 2, wherein the second look up table is an estimated look up table.
Claim 5
Dependent Claim
24 words
The electrostatographic printing machine of claim 3, including a summing node interconnected to a reference signal and the sensor measuring said surface voltage potential.
Claim 6
Dependent Claim
19 words
The electrostatographic printing machine of claim 1 including a second look up table responsive to the set point parameters.
Claim 7
Dependent Claim
94 words
An electrostatographic printing machine having an imaging member with a surface voltage potential on a portion thereof, the electrostatographic printing machine including a control system having set point parameters with operating ranges comprising: a sensor to measure the surface voltage potential, a compensator responsive to a reference signal and the surface voltage potential, a look up table responsive to the changing of the set point parameters to provide operating range values, and an electrostatic device responsive to the compensator and the look up table to change the surface voltage potential in a linear manner.
Claim 8
Dependent Claim
94 words
An electrostatographic printing machine having an imaging member with a surface voltage potential on a portion thereof, the electrostatographic printing machine including a control system having set point parameters with operating ranges comprising: a sensor to measure the surface voltage potential, a compensator responsive to a reference signal and the surface voltage potential, a look up table responsive to the changing of the set point parameters to provide operating range values, and an electrostatic device responsive to the compensator and the look up table to change the surface voltage potential in a linear manner.
Claim 9
Dependent Claim
24 words
The printing machine of claim 6, wherein the look up table includes means to provide different operating range values for changing set point parameters.
Claim 10
Dependent Claim
27 words
The printing machine of claim 7 wherein the means to provide different operating range values includes the means to provide linear values for changing set point parameters.
Claim 11
Dependent Claim
29 words
The electrostatographic printing machine of claim 6 including summing nodes responsive to the compensator and the look up table to change the surface voltage potential in a linear manner.
Claim 12
Dependent Claim
98 words
An electrostatographic printing machine having an imaging member with a surface voltage potential on a portion thereof, the electrostatographic printing machine including a control system having changeable set point parameters comprising: a reference signal source, a sensor to measure the surface voltage potential, a compensator responsive to the reference signal and the surface voltage potential to provide a first adjustment signal, the first adjustment signal being non-linear, a look up table responsive to the first adjustment. signal to provide a linear adjustment signal, and an electrostatic device responsive to the linear adjustment signal to adjust surface voltage potential.
Claim 13
Dependent Claim
98 words
An electrostatographic printing machine having an imaging member with a surface voltage potential on a portion thereof, the electrostatographic printing machine including a control system having changeable set point parameters comprising: a reference signal source, a sensor to measure the surface voltage potential, a compensator responsive to the reference signal and the surface voltage potential to provide a first adjustment signal, the first adjustment signal being non-linear, a look up table responsive to the first adjustment. signal to provide a linear adjustment signal, and an electrostatic device responsive to the linear adjustment signal to adjust surface voltage potential.
Claim 14
Dependent Claim
111 words
A printing machine having an imaging member with a surface voltage potential on a portion thereof, the printing machine including a control system having changeable set point parameters comprising: a sensor to measure the surface voltage potential, a compensator responsive to the reference signal and the surface voltage potential to provide a first adjustment signal, the first adjustment signal being non-linear, a first look up table responsive to the first adjustment signal to provide a linear adjustment signal, a second look up table responsive to changing set point parameters, and an electrostatic device responsive to the linear adjustment signal and to the second look up table to adjust surface voltage potential.
Claim 15
Dependent Claim
111 words
A printing machine having an imaging member with a surface voltage potential on a portion thereof, the printing machine including a control system having changeable set point parameters comprising: a sensor to measure the surface voltage potential, a compensator responsive to the reference signal and the surface voltage potential to provide a first adjustment signal, the first adjustment signal being non-linear, a first look up table responsive to the first adjustment signal to provide a linear adjustment signal, a second look up table responsive to changing set point parameters, and an electrostatic device responsive to the linear adjustment signal and to the second look up table to adjust surface voltage potential.
Claim 16
Dependent Claim
26 words
The printing machine of claim 11 including a summing node responsive to the first and second look up tables to provides signals to the electrostatic device.
Claim 17
Dependent Claim
92 words
In an electrostatographic printing machine having an imaging member with a surface voltage potential on a portion thereof, the electrostatographic printing machine including a control system having a sensor and a compensator, a method of linearly adjusting the surface voltage potential comprising the steps of: storing a reference signal, sensing the surface voltage potential, responding by the compensator to the reference signal and the surface voltage potential to provide an adjustment signal, a look up table responding to the adjustment signal to linearize the adjustment signal for adjusting the surface voltage potential.
Claim 18
Dependent Claim
92 words
In an electrostatographic printing machine having an imaging member with a surface voltage potential on a portion thereof, the electrostatographic printing machine including a control system having a sensor and a compensator, a method of linearly adjusting the surface voltage potential comprising the steps of: storing a reference signal, sensing the surface voltage potential, responding by the compensator to the reference signal and the surface voltage potential to provide an adjustment signal, a look up table responding to the adjustment signal to linearize the adjustment signal for adjusting the surface voltage potential.
Claim 19
Dependent Claim
86 words
In a printing machine having an imaging member with a surface voltage potential on a portion thereof, the printing machine including a control system having a sensor a method of linearly adjusting the surface voltage potential comprising the steps of: storing a reference signal, sensing the surface voltage potential, responding to the reference signal and the surface voltage potential to provide an adjustment signal, and an estimated look up table responding to the adjustment signal to linearize the adjustment signal for adjusting the surface voltage potential.
Claim 20
Dependent Claim
86 words
In a printing machine having an imaging member with a surface voltage potential on a portion thereof, the printing machine including a control system having a sensor a method of linearly adjusting the surface voltage potential comprising the steps of: storing a reference signal, sensing the surface voltage potential, responding to the reference signal and the surface voltage potential to provide an adjustment signal, and an estimated look up table responding to the adjustment signal to linearize the adjustment signal for adjusting the surface voltage potential.
Claim 21
Dependent Claim
23 words
The method of claim 14 including a compensator responsive to the reference signal and the surface voltage potential to provide an adjustment signal.
Claim 22
Dependent Claim
19 words
The method of claim 14 including summing node responsive to the means responding to adjust the surface voltage potential.
Claim 23
Dependent Claim
95 words
An electrostatographic printing machine having an imaging member and a plurality of operating components including a developer with toner for providing developed images, the electrostatographic printing machine including a control system having set point parameters comprising: a sensor to measure developed toner mass on the imaging member a compensator responsive to said developed toner mass measured by the sensor to provide a first adjustment signal, a look up table responsive to the first adjustment signal to linearize the first adjustment signal, and circuitry responsive to the look up table to adjust the developed toner mass.
Claim 24
Dependent Claim
95 words
An electrostatographic printing machine having an imaging member and a plurality of operating components including a developer with toner for providing developed images, the electrostatographic printing machine including a control system having set point parameters comprising: a sensor to measure developed toner mass on the imaging member a compensator responsive to said developed toner mass measured by the sensor to provide a first adjustment signal, a look up table responsive to the first adjustment signal to linearize the first adjustment signal, and circuitry responsive to the look up table to adjust the developed toner mass.
Claim 25
Dependent Claim
20 words
The electrostatographic printing machine of claim 17 wherein the circuitry responsive to the look up table includes a summing node.
Claim 26
Dependent Claim
18 words
The electrostatographic printing machine of claim 17 wherein the look up table is an estimated look up table.
Claim 27
Dependent Claim
85 words
An electrostatographic printing machine having an imaging member for providing developed images having a developed toner mass, the electrostatographic printing machine including a control system comprising: a reference signal source, a sensor to measure the developed toner mass, a compensator responsive to the reference signal and the developed toner mass to provide an adjustment signal, a look up table responsive to the adjustment signal to provide a linear adjustment signal, and a device responsive to the linear adjustment signal to adjust the developed toner mass.
Claim 28
Dependent Claim
85 words
An electrostatographic printing machine having an imaging member for providing developed images having a developed toner mass, the electrostatographic printing machine including a control system comprising: a reference signal source, a sensor to measure the developed toner mass, a compensator responsive to the reference signal and the developed toner mass to provide an adjustment signal, a look up table responsive to the adjustment signal to provide a linear adjustment signal, and a device responsive to the linear adjustment signal to adjust the developed toner mass.
Claim 29
Dependent Claim
92 words
An electrostatographic printing machine having an imaging member and a plurality of operating components to provide images on support material, the electrostatographic printing machine including a control system having set points comprising: a sensor to measure operating component parameters, a compensator responsive to said parameters measured by the sensor to provide a first adjustment signal for one of the operating components, a look up table responsive to the compensator to provide a linear first adjustment signal, and circuitry responsive to the linear first adjustment to adjust said one of the operating components.
Claim 30
Dependent Claim
92 words
An electrostatographic printing machine having an imaging member and a plurality of operating components to provide images on support material, the electrostatographic printing machine including a control system having set points comprising: a sensor to measure operating component parameters, a compensator responsive to said parameters measured by the sensor to provide a first adjustment signal for one of the operating components, a look up table responsive to the compensator to provide a linear first adjustment signal, and circuitry responsive to the linear first adjustment to adjust said one of the operating components.
Claim 31
Dependent Claim
18 words
The electrostatographic printing machine of claim 21 wherein said one of the operating components is a charging device.
Claim 32
Dependent Claim
18 words
The electrostatographic printing machine of claim 21 wherein said one of the operating components is a developer device.
Claim 33
Dependent Claim
74 words
In an electrostatographic printing machine having operating components and a control system including a sensor, a method of adjusting the operating components comprising the steps of: sensing an operating component to provide a signal, responding to the signal to provide a non-linear adjustment signal, a look up table responding to the non-linear adjustment signal to provide a linear adjustment signal, and a device responding to the linear adjustment signal to adjust said operating component.
Claim 34
Dependent Claim
74 words
In an electrostatographic printing machine having operating components and a control system including a sensor, a method of adjusting the operating components comprising the steps of: sensing an operating component to provide a signal, responding to the signal to provide a non-linear adjustment signal, a look up table responding to the non-linear adjustment signal to provide a linear adjustment signal, and a device responding to the linear adjustment signal to adjust said operating component.
Claim 35
Dependent Claim
83 words
In an electrostatographic printing machine having operating components and a control system including a sensor, compensator, and look up table, a method of adjusting the operating components comprising the steps of: sensing an operating component to provide a signal, responding to the signal by the compensator to provide a non-linear adjustment signal, responding to the non-linear adjustment signal by the look up table to provide a linear adjustment signal, and a device responding to the linear adjustment signal to adjust said operating component.
Claim 36
Dependent Claim
83 words
In an electrostatographic printing machine having operating components and a control system including a sensor, compensator, and look up table, a method of adjusting the operating components comprising the steps of: sensing an operating component to provide a signal, responding to the signal by the compensator to provide a non-linear adjustment signal, responding to the non-linear adjustment signal by the look up table to provide a linear adjustment signal, and a device responding to the linear adjustment signal to adjust said operating component.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-04 | 2001-11-03 | 2002-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-04 | 2005-11-03 | 2006-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-04 | 2009-11-03 | 2010-05-05 | $7700.00 | Window Closed / Lapsed |