CN100414309C - Test apparatus for evaluating electrical properties of liquid toner and test method for the same - Google Patents
Test apparatus for evaluating electrical properties of liquid toner and test method for the same Download PDFInfo
- Publication number
- CN100414309C CN100414309C CNB2005100919534A CN200510091953A CN100414309C CN 100414309 C CN100414309 C CN 100414309C CN B2005100919534 A CNB2005100919534 A CN B2005100919534A CN 200510091953 A CN200510091953 A CN 200510091953A CN 100414309 C CN100414309 C CN 100414309C
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- China
- Prior art keywords
- liquid toner
- voltage
- conducting plate
- test
- roller
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-
- 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
- G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
- G03G15/104—Preparing, mixing, transporting or dispensing developer
- G03G15/105—Detection or control means for the toner concentration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
Abstract
A test apparatus to evaluate the electrical properties of a liquid toner in which a printing quality of the liquid toner may be predicted by evaluating the electrical properties of the liquid toner without performing printing. The test apparatus to evaluate the electrical properties of a liquid toner includes a roller, a conductive flat panel positioned below the roller to move a predetermined distance in contact with the roller, a power supply device applying a voltage to the roller and the conductive flat panel, and a voltage tester provided at the rear of the roller to move together with the roller, testing a voltage of the liquid toner arranged on the conductive flat panel.
Description
Technical field
The present invention relates to a kind of liquid toner that is used for imaging device.More particularly, the present invention relates to a kind of proving installation and method of testing thereof of evaluating and testing the electrical properties of liquid toner, wherein the electrical properties of liquid toner can not use the use in image-forming apparatus liquid toner to print and evaluate and test.
Background technology
Usually, have some advantages based on the wet type imaging device of liquid toner, that is, so because less this equipment of toner particle can be realized high-definition picture.In addition, can carry out flying print, and owing to need a small amount of toner, so the printing of every page of paper is with low cost.
The liquid toner that is used for the wet type laser printer is realized by being dispersed in solvent by the toner particle that adjuvant is made, described adjuvant such as high-polymer resin, pigment, charge control agent and disperse additive, described solvent are promptly based on the liquid carrier of hydrocarbon.In this case, liquid toner comprises the solid constituent that accounts in weight 10% scope, such as high-polymer resin, pigment, charge control agent and disperse additive; And comprise the solvent composition that accounts in weight 90% scope.
Fig. 1 shows the synoptic diagram that utilizes the wet type imaging device that the aforesaid liquid toner prints.With reference to Fig. 1, after developing apparatus 10 had developed the electrostatic latent image of photoresist body (photo-resist body) 20, liquid toner was sent on the paper P by travelling belt 30 by transfer roll 40.Transmitting above has the paper P of toner particle to comprise solvent composition and solid constituent.Solvent composition volatilizees and the solid constituent sclerosis, passes the fixed part 50 under the high temperature simultaneously, forms image thus on paper P.Among Fig. 1, the wet type imaging device comprises that four kinds of developing apparatuss 10 are to realize coloured image.Reference numeral 31 expression cleanings remain in the cleaning device of the toner on the travelling belt 30.The wet type imaging device can be arranged in and make under the situation of not utilizing travelling belt 30 that liquid toner directly is sent on the paper P from photoresist body 20.
In above-mentioned wet type imaging device, the quality of the final image on the paper, that is, print quality depends on the electrical properties of liquid toner.Therefore, the quality that will be printed on the image on the paper can be predicted by the electrical properties of evaluation and test liquid toner.Up to now, after tested be the quantity of electric charge of the toner particle of per unit weight, that is, q/m (μ C/g) is used for evaluating and testing the electrical properties of liquid toner.In this case, q/m can explain the electrical properties of liquid toner when the transfer operation T0 (see figure 1) from developing apparatus 10 to photoresist body 20, but can not explain from photoresist body 20 to travelling belt 30 transfer operation T1 and from travelling belt 30 by transfer roll 40 electrical properties during to the transfer operation T2 of paper P.Therefore, print and have to adopt special liquid toner to carry out, thereby the electrical properties that influences the liquid toner of print quality can be evaluated and tested with reference to print result by imaging device.
As mentioned above, if print, then require imaging device evaluation and test print quality with special liquid toner.In this case, problem is: need inconvenient operation, need the plenty of time and become original evaluation and test print quality.
Summary of the invention
Thereby, the present invention relates to a kind of proving installation of the electrical properties that is used to evaluate and test liquid toner and be used to evaluate and test the method for testing of the electrical properties of liquid toner, it has been eliminated basically because one or more problems that limitation and shortcoming caused of prior art.
The invention provides a kind of proving installation that is used to evaluate and test the electrical properties of liquid toner, wherein the print quality of liquid toner can not utilize imaging device just can evaluate and test.
The present invention also provides a kind of method of testing that is used to evaluate and test the electrical properties of liquid toner, and wherein the print quality of liquid toner can not utilize imaging device just can evaluate and test.
In order to realize these and other advantages, and according to purpose of the present invention, as here embodying and wide in range description, the proving installation that is used to evaluate and test the electrical properties of liquid toner comprises: conducting plate is furnished with liquid toner on it; Roller, it is arranged on the conducting plate, moves preset distance when contacting with conducting plate; Supply unit, it applies voltage to this roller and conducting plate; And voltage-level detector, it is positioned at the roller back to move the voltage of the liquid toner of test arrangement on conducting plate together with roller.
Proving installation also is included in the anchor clamps that on the conducting plate roller moved preset distance.
Usually, voltage-level detector test surfaces potential change, that is, and by the change in voltage of the liquid toner of roller complanation (that is, flattening).And voltage-level detector output voltage changing value becomes curve map, and perhaps voltage-level detector is connected the voltage change with the storage test with computer interface.
Usually, roller is based on the developer roll of the imaging device of liquid toner.
In the present invention on the other hand, the proving installation that is used to evaluate and test the electrical properties of liquid toner comprises: conducting plate is furnished with liquid toner on it; Developer roll, it is arranged to contact with conducting plate; Mobile device, it makes developer roll be parallel to the mobile rotatably preset distance of conducting plate; Supply unit, it applies voltage to developer roll and conducting plate; And voltage-level detector, its back that is arranged on developer roll to be moving with developer roll, the voltage by the liquid toner of developer roll complanation on the testing conductive flat board.
Mobile device comprises the drive division of mobile developer roll and the guide portion that the guiding developer roll moves rotatably.
Usually, mobile device is by computer control, and by the store voltages of voltage-level detector test in computing machine.
In the present invention on the other hand, the method for testing of electrical properties of evaluation and test liquid toner comprises: the change in voltage of arranging liquid toner on conducting plate, utilizing the roller that applied voltage to make the liquid toner complanation and test the liquid toner of complanation.
Usually, approximately the liquid toner of 1ml volume is arranged on the conducting plate.
Usually, roller generally is based on the developer roll of the imaging device of liquid toner.
Evaluate and test the proving installation of the electrical properties of liquid toner in above-mentioned being used for according to the present invention, owing to the electrical properties of liquid toner can be tested the print quality of utilizing imaging device to print and evaluates and tests, institute is so that evaluation and test liquid toner and reduced the evaluation and test liquid toner and taken time and cost.
In the present invention, owing to do not need imaging device, can be provided for evaluating and testing the method for testing of the electrical properties of liquid toner, wherein reduce required time and the cost of evaluation and test liquid toner.
Other aspects of the present invention and/or advantage will part be set forth in the following description, part is apparent or can understand from the practice of the present invention from instructions.
Description of drawings
These and/or other aspect of the present invention and advantage will become from the following explanation of reference accompanying drawing to embodiment obviously and be easier to and understand, in the accompanying drawing:
Fig. 1 is the synoptic diagram that illustrates based on the imaging device example of liquid toner;
Fig. 2 is the synoptic diagram that illustrates according to the proving installation of embodiment of the invention evaluation and test liquid toner electrical properties;
Fig. 3 shows voltage with proving installation test liquid toner to evaluate and test the electrical properties of liquid toner shown in Figure 2;
Fig. 4 is the planimetric map of proving installation that is used to evaluate and test the liquid toner electrical properties that illustrates according to the embodiment of the invention;
Fig. 5 is the process flow diagram of method of testing that is used to evaluate and test the liquid toner electrical properties that illustrates according to the embodiment of the invention; With
Fig. 6 illustrates the figure line of evaluating and testing the liquid toner electrical properties according to the embodiment of the invention by the change in voltage of proving installation test liquid toner.
Embodiment
Describe embodiments of the invention now in detail, its example is shown in the drawings, and wherein identical Reference numeral is represented components identical all the time.Embodiment is described below, to explain the present invention by the reference accompanying drawing.
With reference to Fig. 2, the proving installation 100 of the electrical properties of evaluation and test liquid toner comprises roller 110, conducting plate 130, supply unit 140 and voltage-level detector 120.
Conducting plate 130 is positioned at the below of roller 110 and has the width and the length of backing roll 110 motions.Usually, conducting plate 130 is made by steel or stainless steel.
Voltage-level detector 120 detect by the liquid toner 160 of roller 110 complanations ' voltage.The probe 121 of voltage-level detector 120 is arranged on the back of roller 110 to move together with roller 110.In this case, the surface electrostatic meter is usually as voltage-level detector 120.For accurate test, the surface electrostatic meter not with liquid toner 160 ' state of contact under the test surfaces electromotive force.An example of surface electrostatic meter comprises the model of being made by TREK 370.Voltage by voltage-level detector 120 tests can show with its variation that detects by an unaided eye with simulation model.Usually, voltage illustrates with curve map with the figure pattern demonstration.For this reason, used the surveying instrument that is provided with float, perhaps surveying instrument is connected on the computing machine 150 and exports this value with store measurement values in computing machine 150 and with curve map.
The operation of the electrical properties of above-mentioned proving installation 100 evaluation and test liquid toners will be described now.
At first, in the front of roller 110 liquid toner 160 is arranged on the conducting plate 130.At this moment, preferably the liquid toner 160 of about 1ml volume is dropped on the conducting plate 130.Then, power-on, the anode (+) of this power supply is connected on the roller 110, and the negative electrode (-) of power supply is connected on the conducting plate 130.Be applied to (see figure 3) under the state of roller 110 at voltage, movable anchor clamps (not shown) promotes to be arranged on the probe 121 of roller 110 back under predetermined force.Probe 121 continues to be pushed, up to its be positioned at by the liquid toner 160 of roller 110 complanations ' the middle part.Then, by voltage-level detector 120 test liquid toners 160 ' surface potential.By the voltage real-time storage of voltage-level detector 120 test in computing machine 150.Afterwards, can by computing machine 150 obtain liquid toners 160 ' the change curve of test voltage.As indicating in the curve map, can test be applied to liquid toner 160 ' maximum voltage and arrive 0V from 0V by maximum voltage and take time.
Two kinds of liquid toners, the liquid toner (hereinafter being called " toner B ") that has the liquid toner (hereinafter being called " toner A ") of known print quality and have a unknown print quality has obtained the test of the proving installation 100 of the foregoing description.The curve map of test result is shown among Fig. 6.Among Fig. 6, curve A 1 and A2 are the test results of the toner A of twice test, and curve B 1 and B2 are the test results of the toner B of twice test.With reference to curve, the maximum voltage that can find toner B is relatively less than the voltage of toner A, and the 0V that becomes of toner B takes time relatively faster than toner A's.Can predict from The above results, can not obtain charge efficiency required when toner B develops in imaging device.In fact, the print result of toner B shows the image density low 0.4 to 0.5 of its image density than toner A.
Therefore, adopt the print quality of the output material of the special liquid toner printing of testing by the proving installation of the embodiment of the invention to evaluate and test out from The above results.In more detail, at toner A with known print quality, this class electrical properties of taking time when utilizing proving installation test case such as required maximum voltage and being reduced to 0V.Equally, also test has the electrical properties of the toner B of unknown print quality.Afterwards, institute takes time and compares with the maximum voltage of toner A and toner B and when becoming 0V.Comparing result can determine if the maximum voltage of toner B and become 0V take time less than toner A, and then the print quality of toner B is poorer than the print quality of toner A.On the other hand, can determine that if the maximum voltage of toner B and become 0V take time greater than toner A, then the print quality of toner B is better than the print quality of toner A.
With reference to Fig. 4, be used to evaluate and test the proving installation 100 of the electrical properties of liquid toner ' comprise developer roll 110, conducting plate 130, mobile device 170, supply unit 140, voltage-level detector 120 and computing machine 150.
Conducting plate 130 is arranged on below the developer roll 110 and with developer roll 110 and contacts mobile preset distance.Supply unit 140 is arranged to relative with mobile device 170 and voltage is applied on developer roll 110 and the conducting plate 130.The back that probe 121 is arranged on developer roll 110 is to move with developer roll 110 and the voltage of the liquid toner 160 of test arrangement on conducting plate 130.Voltage-level detector 120 is connected on the probe 121.Because conducting plate 130, supply unit 140, probe 121 and voltage-level detector 120 are identical with proving installation 100, so will omit its detailed description.
To describe now the proving installation 100 of the electrical properties of above-mentioned evaluation and test liquid toner ' operation.
At first, in the front of roller 110 liquid toner 160 is arranged on the conducting plate 130.At this moment, preferably the amount of testing liquid toner 160 is approximately the 1ml volume.Subsequently, if proving installation 100 ' be in " opening " state with computing machine 150, then apply voltage to developer roll 110 and conducting plate 130 by supply unit 140.Under this state, mobile device 170 moves preset distance with developer roll 110.Then, the probe 121 of voltage-level detector 120 is positioned at the middle part by the liquid toner 160 of developer roll 110 complanations.At this moment, the change in voltage of the surface potential of the liquid toner 160 tested by probe 121 of computing machine 150 real-time storage.If voltage is all tested, then utilize the output unit of computing machine 150 that test voltage output is become curve map.
The print quality of liquid toner can be evaluated and tested by obtaining the electrical properties of being tested from curve map as mentioned above, and described electrical properties is such as maximum voltage and become 0V and take time.
Below, with the method for description according to the electrical properties of the evaluation and test liquid toner of the embodiment of the invention.
At first, in operation steps S100, the testing liquid toner is arranged on the conducting plate.In this case, the amount of testing liquid toner approximately is the 1ml volume.
Subsequently, in operation steps S200, utilize the roller that is applied with voltage to make the liquid toner complanation, and the change in voltage of the liquid toner of test complanation.At this moment, based on the developer roll of the imaging device of liquid toner usually as this roller.The change in voltage of liquid toner is utilized the examination of surface electrostatic instrumentation usually.Usually, utilize can numeral output surveying instrument with after computer interface is connected, surface electrostatic meter real-time storage test value.
Then, the voltage change of liquid toner from test obtains maximal value and arrives 0V from 0V through maximal value taking time in operation steps S300.
At last, the liquid toner by will having known print quality in operation steps S400 and the maximal value with unknown print quality and become 0V and take time and compare are evaluated and tested the electrical properties of the liquid toner with unknown print quality.Print quality can be predicted from the electrical properties of evaluation and test.
Aforesaid embodiment and advantage only are the exemplary the present invention that can not be used to limit.The present invention can be easy to be applied to the device of other types.And the explanation of the embodiment of the invention is used to describe rather than limit the scope of claim, it will be apparent to one skilled in the art that to carry out multiple choices, modification and change, and its scope is limited in claims and the identity file thereof.
The application requires the right of priority of the korean patent application No.2004-70254 of submission on September 3rd, 2004, and the content of this application is incorporated herein by reference.
Claims (14)
1. proving installation that is used to evaluate and test the electrical properties of liquid toner comprises:
Conducting plate is furnished with liquid toner on it;
Roller, it is arranged on the conducting plate to be rolled to the second place from primary importance on conducting plate;
Supply unit, it applies voltage to this conducting plate; And
Voltage-level detector, it is positioned at the roller back moving together with roller, the primary importance of test arrangement on conducting plate and the voltage of the liquid toner of the second place.
2. proving installation as claimed in claim 1 also is included in the anchor clamps that on the conducting plate roller moved preset distance.
3. proving installation as claimed in claim 1, wherein voltage-level detector detects the change in voltage of the liquid toner between first and second positions.
4. proving installation as claimed in claim 3, wherein the voltage curve information of voltage-level detector output from the primary importance to the second place becomes curve map.
5. proving installation as claimed in claim 3, wherein voltage-level detector is connected the variation with storage voltage with computer interface.
6. proving installation as claimed in claim 3, its middle roller are to utilize the developer roll of the imaging device of liquid toner.
7. proving installation as claimed in claim 1, wherein liquid toner is by the liquid carrier of hydrocarbon-based be selected from one group the material that comprises high-polymer resin, pigment, charge control agent and disperse additive and make.
8. proving installation that is used to evaluate and test the electrical properties of liquid toner comprises:
Conducting plate is furnished with liquid toner on it;
Developer roll, it is arranged to contact with conducting plate;
Mobile device, it moves rotatably from the primary importance to the second place and is parallel to the developer roll of conducting plate with the complanation liquid toner;
Supply unit, it applies voltage to conducting plate; And
Voltage-level detector, its aft section that is arranged on developer roll with respect to the developer roll moving direction to be moving with developer roll, the voltage by the liquid toner of developer roll complanation of first and second positions on the testing conductive flat board.
9. proving installation as claimed in claim 8, wherein mobile device comprises the drive division of mobile developer roll and the guide portion that the guiding developer roll moves rotatably.
10. proving installation as claimed in claim 9, wherein mobile device is by computer control, and by the store voltages of voltage-level detector test in computing machine.
11. a method of testing of evaluating and testing the electrical properties of liquid toner comprises:
On conducting plate, arrange liquid toner;
The roller that utilization has applied voltage makes the liquid toner complanation; And
Test the change in voltage of the liquid toner of the complanation that strides across conducting plate.
12. method of testing as claimed in claim 11 wherein utilizes the liquid toner that is arranged in the about 1ml volume on the conducting plate to carry out this method of testing.
13. method of testing as claimed in claim 11, its middle roller are to utilize the developer roll of the imaging device of liquid toner.
14. a method of testing of evaluating and testing the electrical properties of liquid toner comprises:
On conducting plate, arrange liquid toner;
By making roller on conducting plate, be rolled to the second place, make the liquid toner complanation from primary importance;
The primary importance that strides across conducting plate after the measurement planeization and the test at the second place place voltage of liquid toner;
Obtain maximum voltage and arrive 0V by maximum voltage to take time from the voltage of test from 0V with the measurement of liquid toner; And
With test with the maximum voltage of liquid toner and from 0V by maximum voltage arrive 0V take time with the maximum voltage of known liquid toner with known print quality and from 0V by maximum voltage arrival comparison that 0V takes time, to predict the print quality of test liquid toner.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020040070254A KR100573662B1 (en) | 2004-09-03 | 2004-09-03 | Test Apparatus for Evaluating the Electrical Properties of Liquid Toner and Test Method for the Same |
| KR70254/04 | 2004-09-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1743857A CN1743857A (en) | 2006-03-08 |
| CN100414309C true CN100414309C (en) | 2008-08-27 |
Family
ID=36139315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100919534A Expired - Fee Related CN100414309C (en) | 2004-09-03 | 2005-08-15 | Test apparatus for evaluating electrical properties of liquid toner and test method for the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100573662B1 (en) |
| CN (1) | CN100414309C (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05149922A (en) * | 1991-11-26 | 1993-06-15 | Mita Ind Co Ltd | Method and apparatus for measuring charging characteristic of toner material |
| JPH09133651A (en) * | 1995-11-10 | 1997-05-20 | Ricoh Co Ltd | Charging amount measuring apparatus |
| JPH11264812A (en) * | 1998-03-19 | 1999-09-28 | Dainippon Printing Co Ltd | Wet type device for measuring amount of charge of minute particle |
| JP2000056581A (en) * | 1998-08-07 | 2000-02-25 | Nec Niigata Ltd | Toner density detection device, storage medium storing program, and storage medium storing data |
| JP2002139476A (en) * | 2000-10-30 | 2002-05-17 | Ricoh Co Ltd | Cell for measuring electric characteristic and liquid developer |
| US6535700B1 (en) * | 2000-11-03 | 2003-03-18 | Xerox Corporation | Liquid xerographic developability sensor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2938327B2 (en) * | 1993-12-06 | 1999-08-23 | シャープ株式会社 | Measuring device for toner charge |
| JPH09305025A (en) * | 1996-05-15 | 1997-11-28 | Fuji Xerox Co Ltd | Method for measuring distribution of specific charge of toner |
| JP2004226221A (en) | 2003-01-22 | 2004-08-12 | Ricoh Co Ltd | Method of measuring quantity of charge and mass of single toner particle |
-
2004
- 2004-09-03 KR KR1020040070254A patent/KR100573662B1/en not_active IP Right Cessation
-
2005
- 2005-08-15 CN CNB2005100919534A patent/CN100414309C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05149922A (en) * | 1991-11-26 | 1993-06-15 | Mita Ind Co Ltd | Method and apparatus for measuring charging characteristic of toner material |
| JPH09133651A (en) * | 1995-11-10 | 1997-05-20 | Ricoh Co Ltd | Charging amount measuring apparatus |
| JPH11264812A (en) * | 1998-03-19 | 1999-09-28 | Dainippon Printing Co Ltd | Wet type device for measuring amount of charge of minute particle |
| JP2000056581A (en) * | 1998-08-07 | 2000-02-25 | Nec Niigata Ltd | Toner density detection device, storage medium storing program, and storage medium storing data |
| JP2002139476A (en) * | 2000-10-30 | 2002-05-17 | Ricoh Co Ltd | Cell for measuring electric characteristic and liquid developer |
| US6535700B1 (en) * | 2000-11-03 | 2003-03-18 | Xerox Corporation | Liquid xerographic developability sensor |
Non-Patent Citations (2)
| Title |
|---|
| 静电复印等信息输出过程中粒子荷电特性分析. 魏京花.北京建筑工程学院学报，第16卷第2期. 2000 |
| 静电复印等信息输出过程中粒子荷电特性分析. 魏京花.北京建筑工程学院学报，第16卷第2期. 2000 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20060021491A (en) | 2006-03-08 |
| KR100573662B1 (en) | 2006-04-26 |
| CN1743857A (en) | 2006-03-08 |
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