专利摘要:
1521048 Monitoring an electrophotographic copying machine XEROX CORP 28 Oct 1975 [24 Feb 1975] 44304/75 Heading B6C A probe 78, connected to an electrometer (not shown), is mounted on a carriage 130 which is slideable across and over the photoconductive belt 12 of the machine and an electrically conductive test surface 135 to measure the potentials thereon. The surface 135 is connectable to the voltage supply for the machine's developer bias and/or its corona generators. Means for calibrating the electrometer is provided. The output potential of the voltage supply means is adjustable.
公开号:SU727167A3
申请号:SU762322052
申请日:1976-01-21
公开日:1980-04-05
发明作者:Джозеф Урсо Чарльз;Дэвид Вилсон Чарльз;Эдвард Кортни Джон
申请人:Ксерокс Корпорейшн (Фирма);
IPC主号:
专利说明:

The invention relates to measuring instruments and can be used to measure static electricity of a photodetector of a reproduction machine of an electrostatic type. 3
A device for measuring static electricity to a reproduction machine containing an electrometer with a probe [1].
A disadvantage of the known device 10 is the limited application for measuring static electricity at remote points and the low accuracy of the measurement.
The purpose of the invention is to increase the accuracy of measurement and ease of use.
The goal is achieved by the fact that the proposed device has a housing, a holder installed in it with a test board connected to an electrometer, and a probe holder located at a predetermined distance from the test board.
In FIG. 1 shows the described ^ 5 device; in FIG. 2 - electrical diagram of the device.
The housing of the device is made in the form of a rectangular block type of the receiver 1, inside which the probe support 2 is installed. The receiver 1 contains a base 3 with rising sidewalls 4 and 5, the cover 6 is pivotally attached to the sidewall 5, which has a groove -7 days of transmission of the cord 8 of the probe of the electrometer. The depth of the receiver 1 is chosen so as to limit the degree of penetration of the probe support 2 inside it until it engages with the base 3. Test board 9 is a rectangular metal element, preferably brass, mounted rigidly on the base of receiver 1. Test lead 10 protrudes from the test board through the side of the receiver and serves to connect the test board to a voltage source.
The probe support comprises a rectangular element having a central portion of the partition 11 flanged on both sides by vertical and side walls 12, the dimensions and dimensions of the probe support being such that the probe support can be tightly mounted inside the receiver so that the lower edge of the walls 12 abuts the base 3 receiver 1. The partition Ί1 of the probe support is equipped with an annular receiverJ
com 13, the size of which ensures the installation of probe 14 inside it. A screw 15 holds the probe 14 in the receiver 13 in a predetermined spatial relationship with the test board 9 when the probe support 2 is assembled with the receiver 1.
The test board 16 is connected via a switch 17 to power sources 18. The probe 14 is connected by a wire to an electrometer 19 (see figure 2),
During operation, the probe 14 is installed inside the receiver 13 of the support 2 of the probe. Then, the support 2 is installed in the receiver 1 by introducing its walls 12 until it contacts the base 3 of the receiver. Thus, the front side of the probe 14 is set in a predetermined spatial ratio with the test board 9. The cover 6 is closed to keep the parts in assembled condition and form a unitary calibration case. The test wire 10 is connected to a bias source, which is measured, for example, to the power for the electromagnetic brushes of the reproduction machine. The potential appearing on the test board 9 is read by probe 14 and the voltage value rises as an electrometer readings. This indication indicates a bias voltage on the sleeve of the magnetic brushes and serves as a reference value when adjusting the supply voltage. If it is necessary to calibrate the electrometer 19, then using the switch the test board is connected to the calibration power supply 20.
权利要求:
Claims (1)
[1]
Claim
A device for measuring static electricity to a reproduction machine, containing an electrometer with a probe, characterized in that, in order to increase the accuracy of measurement and ease of use, 20 it has a housing, a gimbal installed in it with a test board connected to the electrometer, and probe holder located at a predetermined distance from the test board. 25 Sources of information taken into account in the examination
1. US patent No. 3013203, CL. H 05 F 3/00, 1961 (prototype).
类似技术:
公开号 | 公开日 | 专利标题
SU727167A3|1980-04-05|Apparatus for measuring static electricity to reproduction machine
US3944354A|1976-03-16|Voltage measurement apparatus
US3852667A|1974-12-03|Probe for electrostatic voltmeter
US3898001A|1975-08-05|Electrometer system for non-contact detection of electrostatic charge on a moving electrostatographic imaging surface
US4147981A|1979-04-03|Electrostatic voltmeter probe positioned on the outside of a housing and vibrated by a piezoelectric transducer within the housing
US4149119A|1979-04-10|Combined AC-DC electrometer with AC feedback for drift compensation
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US3999119A|1976-12-21|Measuring toner concentration
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US4127806A|1978-11-28|Shielded electrometer whose output is used to control width of pulses fed back to the shield and associated battery test circuitry
US3001131A|1961-09-19|Automatic meter calibrator
US4673885A|1987-06-16|Devices for reading the quantities of electrical charges borne by a dielectric
US4100484A|1978-07-11|D.C. Electrometer
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US3754186A|1973-08-21|Power factor measuring cell arrangement
US1726318A|1929-08-27|Photo-electric photometer
US3040586A|1962-06-26|Vibration detecting and recording system
US2863354A|1958-12-09|Turbidimeter
JPS5529828A|1980-03-03|Electrophotographic apparatus
SU1173355A1|1985-08-15|Device for determining material electrical properties
US4223444A|1980-09-23|Acoustic micrometer
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同族专利:
公开号 | 公开日
FR2301856B1|1980-05-23|
FR2301856A1|1976-09-17|
CA1063175A|1979-09-25|
DE2558025A1|1976-09-02|
GB1521049A|1978-08-09|
JPS5198035A|1976-08-28|
US3998538A|1976-12-21|
GB1521048A|1978-08-09|
JPS5914756B2|1984-04-05|
NL7515232A|1976-08-26|
引用文献:
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法律状态:
优先权:
申请号 | 申请日 | 专利标题
US05/552,019|US3998538A|1975-02-24|1975-02-24|Electrometer apparatus for reproduction machines|
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