Patent US5155530A successfully refreshed from Google Patents.
US5155530A
Expired / Lapsed
US
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Toner process control system based on toner developed mass, reflectance density and gloss
Assignee: Xerox Corp
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Filing: 1991-12-31
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Granted: 1992-10-13
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Expires: 2011-12-31
Abstract
Abstract A method for controlling toner developed mass per unit area in an electrostatic or electrophotographic device includes the steps of: forming a toner image on a printing sheet; measuring a toner density of the toner image on the printing sheet; measuring a gloss of the toner image on the printing sheet; determining a toner developed mass per unit area for the measured gloss and measured toner density; and adjusting a voltage of a developement field in the electrostatic device in accordance with the determined toner developed mass per unit area. An apparatus for controlling toner developed mass per unit area in an electrostatic device includes: means for fusing a toner image onto a printing sheet; means for measuring a toner density of toner particles on the fused toner image; means for measuring a gloss of the fused toner image on the printing sheet; means for determining toner developed mass per unit area for the measured gloss and measured toner density; and means for adjusting a voltage of a development field in a range in which the toner developed mass per unit area and the voltage of the development field are related so that an increase in the voltage leads to an increase in the toner developed mass per unit area, and a decrease in the voltage leads to a decrease in the toner developed mass per unit area.
Inventors
- 👤 James R. Larson
- 👤 Jon R. Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:20
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/50; G03G15/5062; G03G15/06; G03G15/065; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00417; G03G2215/00421; G03G2215/00535; G03G2215/00603; G03G2215/00611; G03G2215/00616; G03G2215/00717; G03G2215/00755; G03G2215/00789; G03G2215/00805
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
85 words
A method for controlling toner developed mass per unit area in an electrostatic apparatus comprising the steps of: fusing a toner image on a printing sheet; measuring a toner density of the toner image on the printing sheet; measuring a gloss of the toner image on the printing sheet; determining a toner developed mass per unit area for the measured gloss and measured toner density; and adjusting the development field in the electrostatic device in accordance with the determined toner developed mass per unit area.
Claim 2
Independent Claim
85 words
A method for controlling toner developed mass per unit area in an electrostatic apparatus comprising the steps of: fusing a toner image on a printing sheet; measuring a toner density of the toner image on the printing sheet; measuring a gloss of the toner image on the printing sheet; determining a toner developed mass per unit area for the measured gloss and measured toner density; and adjusting the development field in the electrostatic device in accordance with the determined toner developed mass per unit area.
Claim 3
Dependent Claim
86 words
The method as claimed in claim 1, in which the step of adjusting the developed toner mass per unit area includes adjusting a voltage of a development field in a range in which the toner developed mass per unit area and the voltage of the development field are related, so that an increase in the voltage leads to an increase in the toner developed mass per unit area, and a decrease in the voltage leads to a decrease in the toner developed mass per unit area.
Claim 4
Dependent Claim
25 words
The method as claimed in claim 1, in which the step of measuring the toner density includes measuring the toner density with a reflectance densitometer.
Claim 5
Dependent Claim
22 words
The method as claimed in claim 1, in which the step of measuring the gloss includes measuring the gloss with a glossmeter.
Claim 6
Dependent Claim
28 words
The method as claimed in claim 1, in which a liquid toner is used for fusing the toner image, said liquid toner being workable with the electrostatic apparatus.
Claim 7
Dependent Claim
28 words
The method as claimed in claim 1, in which a toner powder is used for fusing the toner image, said toner powder being workable with the electrostatic apparatus.
Claim 8
Dependent Claim
23 words
The method as claimed in claim 1, in which the printing sheet is a type of printing sheet workable with the electrostatic apparatus.
Claim 9
Dependent Claim
15 words
The method as claimed in claim 7, in which the printing sheet is standard paper.
Claim 10
Independent Claim
139 words
An apparatus for controlling toner developed mass per unit area in an electrostatic device comprising: means for fusing a toner image onto a printing sheet; means for measuring a toner density of toner particles on the fused toner image; means for measuring a gloss of the fused toner image on the printing sheet; means for determining a toner developed mass per unit area for the measured gloss and measured toner density; and means for adjusting a voltage of a development field in a range in which the toner developed mass per unit area and the voltage of the development field are related, so that an increase in the voltage leads to an increase in the toner developed mass per unit area, and a decrease in the voltage leads to a decrease in the toner developed mass per unit area.
Claim 11
Independent Claim
139 words
An apparatus for controlling toner developed mass per unit area in an electrostatic device comprising: means for fusing a toner image onto a printing sheet; means for measuring a toner density of toner particles on the fused toner image; means for measuring a gloss of the fused toner image on the printing sheet; means for determining a toner developed mass per unit area for the measured gloss and measured toner density; and means for adjusting a voltage of a development field in a range in which the toner developed mass per unit area and the voltage of the development field are related, so that an increase in the voltage leads to an increase in the toner developed mass per unit area, and a decrease in the voltage leads to a decrease in the toner developed mass per unit area.
Claim 12
Dependent Claim
32 words
The apparatus as claimed in claim 9, wherein the means for fusing a toner image includes means for fusing a toner image comprising a liquid toner being workable with the electrostatic device.
Claim 13
Dependent Claim
32 words
The apparatus as claimed in claim 9, wherein the means for fusing a toner image includes means for fusing a toner image comprising a toner powder being workable with the electrostatic device.
Claim 14
Dependent Claim
14 words
The apparatus as claimed in claim 9, wherein the printing sheet is Textweb® paper.
Claim 15
Independent Claim
26 words
The method as claimed in claim in which a transfer efficiency is at least 95% for a toner that is transferred to a final print sheet.
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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) | 1995-10-13 | 1996-04-13 | 1996-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-13 | 2000-04-13 | 2000-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-13 | 2004-04-13 | 2004-10-13 | $7700.00 | Window Closed / Lapsed |