CN103308812B - Electric device and electric approach - Google Patents
Electric device and electric approach Download PDFInfo
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- CN103308812B CN103308812B CN201210378903.4A CN201210378903A CN103308812B CN 103308812 B CN103308812 B CN 103308812B CN 201210378903 A CN201210378903 A CN 201210378903A CN 103308812 B CN103308812 B CN 103308812B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Control Or Security For Electrophotography (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Facsimiles In General (AREA)
Abstract
The present invention relates to a kind of electric device, it has：Apparatus main body, it, which has, is electricity supplied from an electrical utility, such as from a commercial power source portion and connector, and the connector is connected with being electricity supplied from an electrical utility, such as from a commercial power source the power line of portion's supply electric power to this；Impedance detection unit, it detects the impedance of the connector side；And judging unit, its testing result passed through according to the impedance detection unit with the time, judge the power line with the presence or absence of abnormal.
Description
Technical field
The present invention relates to a kind of electric device.
Background technology
A kind of wire break detection method of electric wire is disclosed in Japanese Unexamined Patent Publication 2006-23105 publications, i.e. apply to electric wire
Plus pulse signal, measure the electric current that is now flowed in electric wire, to its current waveform and with reference to current waveform be compared,
Detected and broken according to its waveform difference, accordingly it is also possible to used on the electric wire just in use for having connected electric power or signal, can
To reliably detect out broken string.
A kind of wire harness electric wire disclosed in Japanese Unexamined Patent Publication 2010-21049 publications, the wire harness electric wire is characterised by having
Have：Conductor portion, it is located at center；Dielectric substance portion, it is arranged on the outside of the conductor portion；Resistive element portion, it is arranged on the dielectric
The outside in body portion；And covering portion, it is arranged on the outside in the resistive element portion and is located at outermost, the abnormality detection of wire harness electric wire
Device has：Storage part, it is stored be completed before in the state of the resistive element portion inner side current potential and the resistive element portion
Outside current potential potential difference；Measurement portion, it measures the current potential of the inner side in the resistive element portion in the state of being completed afterwards
With the potential difference of the current potential in the outside in the resistive element portion；And test section, its to the potential difference that is stored in the storage part and by
The potential difference that the measurement portion is measured is compared, and detects the presence of exception.
The content of the invention
It is an object of the invention to provide a kind of electric device and electric approach, it can decide whether to be connected to defective products
Or the power line of inferior goods.
According to the 1st scheme of the present invention there is provided electric device, it has：Apparatus main body, its have be electricity supplied from an electrical utility, such as from a commercial power source portion and
Connector, the connector is connected with being electricity supplied from an electrical utility, such as from a commercial power source the power line of portion's supply electric power to this；Impedance detection unit, it detects described
The impedance of connector side；And judging unit, its testing result passed through according to the impedance detection unit with the time, judge institute
Power line is stated with the presence or absence of abnormal.
According to the 2nd scheme of the present invention, the impedance detection unit is disconnected to the electric power confession for being electricity supplied from an electrical utility, such as from a commercial power source portion
In the state of giving, the impedance of the connector side is detected.
According to the present invention the 3rd scheme, the judging unit according to the impedance detection unit according to time series gradually
The value of detection, judges the power line with the presence or absence of abnormal.
According to the 4th scheme of the present invention, after the time set in advance, the value of the impedance detection unit detection surpasses
In the case of crossing value set in advance, it is abnormal that the judging unit judges that the power line is present.
According to the 5th scheme of the present invention, in the electric device, pass through in the off working state for being judged as apparatus main body
In the case of time set in advance, the impedance detection unit and the judging unit acted.
According to the 6th scheme of the present invention, the electric device, which also has, forbids unit, in sentencing according to the judging unit
Disconnected result, is judged as that the power line is deposited in an exceptional case, this forbids unit to forbid to the electricity for being electricity supplied from an electrical utility, such as from a commercial power source portion
Source is supplied.
According to the 7th scheme of the present invention, the electric device also has alarm signal output unit, judges according to described
The judged result of unit, is judged as that the power line is deposited in an exceptional case, and the alarm signal output unit is exported to exception
The alarm signal alarmed.
According to the 8th scheme of the present invention there is provided electric approach, it has following processes：The connector of detection means main body
The process of the impedance of side, the apparatus main body, which has, is electricity supplied from an electrical utility, such as from a commercial power source portion and the power line with being electricity supplied from an electrical utility, such as from a commercial power source portion's supply electric power to this
The connector of connection；And according to the testing result for the impedance passed through with the time, judge whether the power line is deposited
In abnormal process.
The effect of invention
According to the above-mentioned 1st and above-mentioned 8th scheme, it can be determined that whether be connected to defective products or the power line of inferior goods.
According to above-mentioned 2nd scheme, on the basis of the effect realized by above-mentioned 1st scheme, with not having the feelings of this structure
Condition is compared, and can also correctly detect out the impedance of connector side.
According to above-mentioned 3rd scheme, on the basis of the effect realized by above-mentioned 1st scheme, with not having the feelings of this structure
Condition is compared, and the judgement of the impedance of mouthful side can also be attached rapidly.
According to above-mentioned 4th scheme, on the basis of the effect realized by above-mentioned 1st or the 2nd scheme, with not having this structure
Situation compare, the detection of the impedance of connector side can also be simplified.
According to above-mentioned 5th scheme, on the basis of the effect realized by above-mentioned 1st to 4 scheme, with not having this structure
Situation is compared, and can also correctly detect out the impedance of connector side.
According to above-mentioned 6th scheme, on the basis of the effect realized by above-mentioned 1st to 5 scheme, with not having this structure
Situation is compared, and can also improve security.
According to above-mentioned 7th scheme, on the basis of the effect realized by above-mentioned 1st to 6 scheme, it can also notify in power supply
Exist on line abnormal.
Brief description of the drawings
Fig. 1 is the sectional view for the image processing system that embodiments of the present invention are related to.
Fig. 2 is the skeleton diagram for the image processing system that embodiments of the present invention are related to.
Fig. 3 is the block diagram for the apparatus control portion that embodiments of the present invention are related to.
Fig. 4 is the circuit diagram for the power circuit that embodiments of the present invention are related to.
Fig. 5 is the flow chart for representing the first control action example that embodiments of the present invention are related to.
Fig. 6 is to represent in embodiments of the present invention, in the case where feed cable uses defective products and excellent product
Relative to the chart of the impedance variations of time,（a）Represent to by the situation of power suppling part supply electric power,（b）Expression forbid to
By the situation of the power supply of power suppling part.
Fig. 7 is the flow chart for representing the second control action example that embodiments of the present invention are related to.
Embodiment
Below, referring to the drawings, embodiments of the present invention are described in detail.
Fig. 1 is cuing open for the image processing system 10 of an example of the electric device being related to as embodiments of the present invention
View, in addition, the skeleton diagram for the image processing system 10 that Fig. 2, which is embodiments of the present invention, to be related to.
Image processing system 10 has apparatus main body 11, and the apparatus main body 11 is by printing equipment 12 and the structure of reading device 14
Into.Printing equipment 12 for example with 3 sections of recording medium feed cassette 16, is respectively arranged with these recording medium feed cassettes 16
Supply head 18.
If selecting a recording medium feed cassette 16, supply head 18 is acted, from selected recording medium feed cassette
16 supply recording medium via recording medium supply passageway 20 to image forming part 22.
In addition, image processing system 10 can also have facsimile function（It is not shown）.
Image forming part 22 is set side by side with yellow, pinkish red, blue or green and black each photoreceptor 24, and is provided with intermediate transfer belt
26。
Charging system, exposure device, developing apparatus, primary transfer device and sanitizer cartridge are configured around each photoreceptor 24
Put（It is not shown）, the toner image formed on each photoreceptor 24 is transferred on intermediate transfer belt 26.Set in black and white
In the case of, being set to only black can act.
The toner picture of intermediate transfer belt 26, by secondary transfer roller 28, is transferred in the recording medium that conveying comes, passes through
Fixing device 30 is carried out after being fixed, and the fixing recording medium for having the toner picture is by recording medium drain passageway 32, to discharge
Portion 34 is discharged.
But, in the case where setting printed on both sides, the recording medium that surface is fixed by fixing device 30 is from note
Recording medium drain passageway 32 is sent to inversion set 36, after being inverted in the inversion set 36, is delivered to medium reversion logical
Road 38, is again returned to after recording medium supply passageway 20, is delivered to image forming part 22, carries out the printing at the back side.
Reading device 14 has automatic manuscript handling device 40, and the automatic manuscript handling device 40 can read two-sided original
Original text, by the automatic manuscript handling device 40, original copy is sent to document board（Platen）On 42, on document board 42 utilize by
The reading part 44 of the compositions such as CCD reads original copy.Placed in addition, reading device 14 can also be read using reading part 44 by operator
Original copy on document board 42.
Original copy is provided with automatic manuscript handling device 40 detector 46 is set, the original copy, which places the detection of detector 46, is
It is no to be placed with original copy.In addition, the dual-purpose of automatic manuscript handling device 40 is document board lid, can be with by opening the document board lid
Original copy is placed on document board 42.The folding of the document board lid can be examined using document board lid folding detector 48
Survey.
Display device 50 is wholely set with image processing system 10, or via network settings.In addition, display device and 50
Such as being constituted by touch panel, and be configured to can be by the instruction by operator to the process content of image processing system 10
Received as input, or display information.
In addition, the image processing system 10 is provided with communicator 52, the network connection such as the communicator 52 and LAN.It is logical
Cross using the communicator that is set on image processing system 10, the image read by reading device 14 can be sent to
The terminal of network connection.In addition.Image processing system 10 is received from the number with the terminal of network connection via communicator 52
According to.Moreover, image processing system 10 is provided with audio devices 54.The audio devices 54 are configured to, and image processing system 10 is deposited
Alarm or the application method etc. of image processing system 10 in abnormal situation, are notified by sound.
In addition, being formed with connector 56 on apparatus main body 11.The connector 56 and feed cable（Power line）The one of 58
End connection.The other end of the feed cable 58 is connected via power outlet 60 with source power supply.
Power circuit 62 is provided with apparatus main body 11.The power circuit 62 is connected with connector 56.In power supply electricity
In road 62, the side of connector 56 of power circuit 62 is provided with impedance detection section 64, it detects the impedance of the side of connector side 56.By
The result that the impedance detection section 64 is detected is sent to apparatus control portion 66.Apparatus control portion 66 is configured to, to above-mentioned image
Forming portion 22, display device 50, communicator 52, audio devices 54, power circuit 62 etc. are controlled.
Fig. 3 is the block diagram for the hardware configuration for representing apparatus control portion 66.
Apparatus control portion 66 is configured to, and makes display device interface 68, CPU 70, memory 72, reading device interface 74, figure
As forming portion interface 76, communicator interface 78, audio devices interface 80 and power circuit interface 82 are connected with bus.
That is, apparatus control portion 66 has the composition part as computer, respectively via display device interface 68 to above-mentioned
Display device 50 is controlled, and above-mentioned reading device 14 is controlled via reading device interface 74, via image forming part
Interface 76 is controlled to image forming part 22, communicator 52 is controlled via communicator interface 78, via audio
Device interface 80 is controlled to audio devices 54, and power circuit 62 is controlled via power circuit interface 82.
CPU 70 is controlled by performing the program being stored in memory 72 to each several part.CPU 70 can also be held
Row is stored in the program in the storage mediums such as CDROM, or can also perform the program provided via communicator interface 78.
Fig. 4 is the circuit diagram for representing power circuit 62.
Power circuit 62 has DC voltage conversion circuit 84.The DC voltage conversion circuit 84 connects with above-mentioned connector 56
Connect, the alternating voltage inputted via the connector 56 is transformed to such as 24V, 5V, 3.3V DC voltage.
Impedance detection section 64 is arranged between connector 56 and DC voltage conversion circuit 84.The impedance detection section 64 has
Detect input voltage detection circuit 86, current detecting resistance 88, relay 90 and the current detection circuit 92 of input voltage.Electricity
Stream detection is made up of with resistance 88 material, such as constantan of the as low as negligible degree of temperature change.In addition, selecting the electric current
The resistance value of detection resistance 88, to flow it through the electric current for the 3 ~ 5A that can show the influence of the self-heating of feed cable 58.
Relay 90 and current detection circuit 92 are driven by the 5V or 3.3V sended over from DC voltage conversion circuit 84.By
The current value that current detection circuit 92 is detected is sent to above-mentioned apparatus control portion 66.
In addition.Power circuit 62 has the lamp circuit 94 being for example made up of bidirectional thyristor.The lamp circuit 94 is with making
Connected for the fixing device 30 that is electricity supplied from an electrical utility, such as from a commercial power source portion, control the power supply to fixing device 30.
Fig. 5 is the flow chart of the first control action example for representing to be carried out by apparatus control portion 66.
In step 100, if installation's power source is connected（ON）, then in step 102 below, judge from last time device electricity
Source disconnects（OFF）Time untill current connection is whether downtime is longer than time T1 set in advance.When
Between T1 be to consider in feed cable 58 time that feed cable 58 is fully cooled down without energization.
In a step 102, in the case of being judged as that downtime is shorter than time T1, into step 104, led to
Normal printing action.On the other hand, in a step 102, in the case of being judged as that downtime is longer than time T1, enter
Following step 106.
In addition, in a step 102, can also stop in the case where being judged as that downtime is shorter than time T1
Into step S104, installation's power source is disconnected to downtime as untill time T1, it is super in downtime
In the case of crossing time T1, into following step S106.
In step 106, input voltage vin is measured using above-mentioned input voltage detection circuit 86.Step 108 below
In, judge whether input voltage vin is less than voltage Vth set in advance.Voltage Vth is that feed cable 58 is likely to be defective products
（Or inferior goods）Value, in the case where feed cable 58 is likely to be defective products, by resistance convert and more than or equal to usual
15 times of the resistance value of feed cable 58.In the step 108, in the case of being judged as that input voltage vin is less than voltage Vth,
Into step 104, common printing action is carried out.On the other hand, in step 108, it is judged as that input voltage vin exceedes voltage
In the case of Vth, into following step 110, into judge feed cable 58 whether be defective products defective products detection pattern.
In defective products detection pattern, first in step 112, the output of lamp circuit 94 is disconnected, also, disconnect from straight
Flow the 24V that voltage conversion circuit 84 is exported.Thus, almost all of electric current flows through impedance detection section 64, so that measuring condition
Uniformly.
That is, such as Fig. 6（a）It is shown, if being electricity supplied from an electrical utility, such as from a commercial power source portion's supply electric power to be applied in larger voltage, according to when
Between sequence measuring feed cable 58 impedance variations between defective products and excellent product difference it is less big.On the other hand, such as Fig. 6
（b）It is shown, if off to the power supply for being electricity supplied from an electrical utility, such as from a commercial power source portion for being applied in larger voltage, then measured according to time series
The impedance of feed cable 58 does not change in excellent product, in contrast, is gradually increasing in defective products, excellent product and defective products
Between difference become big.Therefore, in the present embodiment, the output of lamp circuit 94 is disconnected, and is disconnected from DC voltage conversion
The 24V that circuit 84 is exported.
Relay 90 is connected, starts the action of impedance detection section 64.In step 114 below, n=0 is set to, under
In the step 116 in face, the initial current value I0 exported from current detection circuit 92 is measured, computing is carried out to initial impedance value Z0
Afterwards, it is stored in memory 72.
In step 118 below, input voltage Vn is detected using above-mentioned input voltage detection circuit 86, and utilize electricity
The detection electric current of current detection circuit 92 In.In step 120 below, according to detecting obtained input voltage Vn in step 118
With the impedance Z n of the side of electric current In computings connector 56, the value is stored in memory 72.In the case of n=0, input voltage
It is I0 for V0, electric current, the impedance of connector side is initial value Z0.
In step 122 below, standby time T2 set in advance in step 124 below, judges whether n is big
In 0.Judge that n is not more than in the case of 0 by step 124, i.e. in the case of n=0, into step 126, be set to n=n+1, return
Step 118.In step 124, it is judged as in the case of n ＞ 0, into following step 128.
In step 128, the impedance value Zn that computing in the step 120 obtains is calculated to obtain with computing in the step 120
Initial impedance value Z0 ratio, judge Zn/Z0 whether exceed value N set in advance.Constant N set in advance is, for example, 1.95.
Feed cable 58 is the situation of defective products, compared with being the situation of excellent product, and its original resistance is larger, and due to power supply electricity
The spontaneous heating of cable 58 and resistance increases.It therefore, it can the impedance according to feed cable 58, whether judge feed cable 58 is bad
Product.
In step 128, in the case of being judged as Zn/Z0 ＞ N, into following step 130, relay 90 is disconnected,
And then enter following step 132 device stop/sending alarming step.On the other hand, in step 128, be judged as be not
In the case of Zn/Z0 ＞ N, into following step 134, judge whether n is equal with constant P.Constant P is to be in feed cable 58
In the case of defective products, enough number of times of the spontaneous heat affecting of feed cable 58 can be shown.In addition, in present embodiment
In, Zn/Z0 ＞ N are set to the judgment standard of the defective products of feed cable 58, but be not necessarily limited to this, for example can also be
In the case that measured value Zn exceedes value set in advance, it is judged as defective products.Alternatively, it is also possible to not computing impedance value, but it is sharp
Judged with the detection electric current from current detection circuit 92.
In step 128, if it is determined that not being n=P, then into step 126, by repeat step 118,120,122,
124th, 128, gradually judge impedance ratio.In step 128, also do not rise in the impedance even more than number of times P, feed cable 58
In the case of, into step 136, relay 90 is disconnected, judges that feed cable 58 is without exception, into step 104, is carried out common
Printing is acted.
In step 128, in the case of being judged as Zn/Z0 ＞ N, feed cable 58 is defective products.Therefore, in step 132
In, the content that feed cable 58 is defective products is shown on the display device 50, via the output alarm signal of communicator 52.Alarm
The object output of signal can be personal computer, be configured with image processing system document management apparatus or display device, residence
Indoor managing device or display device, and can also be notified by Email or mobile e-mail.Alternatively, it is also possible to
With the increase of Zn/Z0 change, from alarm to using forbidding, periodically it is controlled, electricity is also being changed without even if alarm
It in the case of source cable 58, can also control that image processing system can not be used.
Fig. 7 is the flow chart of the second control action example for representing to be carried out by apparatus control portion 66.
In second control action example, the judgement of the step 102 in the first control action example is eliminated.In addition, bad
The content of product detection pattern 110 is different.
That is, in second control action example, in step 112, the output of lamp circuit 94 is disconnected, and disconnect from straight
After the 24V exported in stream voltage conversion circuit 84, in step 116, connect in relay 90, step 138 below, measurement
After the output of current detection circuit 92 is initial current value I0, it is stored in memory 72.In step 140 below, only treat
Machine time T3 set in advance.Time T3 is, in the case where feed cable 58 is defective products, can to show feed cable
Time needed for 58 spontaneous heat affectings.In step 142 below, the current value I1 after stand-by time T3 is measured, is stored in and deposits
In reservoir 72.In step 130 below, relay 90 is disconnected.Moreover, in step 144 below, judging initial current value
I0 and current value I1 poor absolute value | I0-I1 | whether more than threshold value Ith.In the case where feed cable 58 is defective products,
After elapsed time T3, it is compared with excellent product, the impedance rise due to spontaneous heating is changed into absolute value | I0-I1 | more than threshold value
Ith.In step 144, it is judged as | I0-I1 | in the case of ＞ Ith, into device stopping/transmission alarm step of step 132
Suddenly, be judged as be not | I0-I1 | in the case of ＞ Ith, into the usual printing step of step 104.
In addition, in the above-described embodiment, be illustrated for image processing system, but the present invention is not limited to
This, generally could be applicable in the electric device such as electric heater, air-conditioning device, electro-heat equipment.
Claims (12)
1. a kind of electric device, it has：
Apparatus main body, it, which has, is electricity supplied from an electrical utility, such as from a commercial power source portion and connector, and the connector to this with being electricity supplied from an electrical utility, such as from a commercial power source portion's supply electric power
Power line is connected, and the power circuit via described device main body is connected with the portion of being electricity supplied from an electrical utility, such as from a commercial power source；
Impedance detection unit, it detects the impedance of the connector side of the power circuit；And
Judging unit, its testing result passed through according to the impedance detection unit with the time judges whether the power line is deposited
In exception.
2. electric device according to claim 1, wherein,
The impedance detection unit is electricity supplied from an electrical utility, such as from a commercial power source in the state of the power supply in portion in disconnection to described, detects the power supply electricity
The impedance of the connector side on road.
3. electric device according to claim 2, wherein,
The value that the judging unit is gradually detected according to the impedance detection unit according to time series, judges that the power line is
It is no to there is exception.
4. electric device according to claim 2, wherein,
After the time set in advance, in the case that the value of the impedance detection unit detection exceedes value set in advance,
It is abnormal that the judging unit judges that the power line is present.
5. electric device according to any one of claim 1 to 4, wherein,
In the case where the off working state for being judged as apparatus main body have passed through the time set in advance, the impedance detection unit
And the judging unit is acted.
6. electric device according to any one of claim 1 to 4,
Also have and forbid unit, in the judged result according to the judging unit, be judged as that the power line has abnormal feelings
Under condition, this forbids unit to forbid to the power supply supply for being electricity supplied from an electrical utility, such as from a commercial power source portion.
7. electric device according to claim 5,
Also have and forbid unit, in the judged result according to the judging unit, be judged as that the power line has abnormal feelings
Under condition, this forbids unit to forbid to the power supply supply for being electricity supplied from an electrical utility, such as from a commercial power source portion.
8. electric device according to any one of claim 1 to 4,
Also there is alarm signal output unit, in the judged result according to the judging unit, be judged as that the power line is present
In the case of exception, alarm signal output unit output is to the abnormal alarm signal alarmed.
9. electric device according to claim 5,
Also there is alarm signal output unit, in the judged result according to the judging unit, be judged as that the power line is present
In the case of exception, alarm signal output unit output is to the abnormal alarm signal alarmed.
10. electric device according to claim 6,
Also there is alarm signal output unit, in the judged result according to the judging unit, be judged as that the power line is present
In the case of exception, alarm signal output unit output is to the abnormal alarm signal alarmed.
11. electric device according to claim 7,
Also there is alarm signal output unit, in the judged result according to the judging unit, be judged as that the power line is present
In the case of exception, alarm signal output unit output is to the abnormal alarm signal alarmed.
12. a kind of electric approach, it has following processes：
The process of the impedance of the connector side of the power circuit of detection means main body, the apparatus main body have be electricity supplied from an electrical utility, such as from a commercial power source portion and
It is connected and via the power circuit and company of the portion of being electricity supplied from an electrical utility, such as from a commercial power source with being electricity supplied from an electrical utility, such as from a commercial power source the power line of portion's supply electric power to this
The connector connect；And
According to the testing result for the impedance passed through with the time, judge the power line with the presence or absence of abnormal process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-049011 | 2012-03-06 | ||
| JP2012049011A JP2013184311A (en) | 2012-03-06 | 2012-03-06 | Electric device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103308812A CN103308812A (en) | 2013-09-18 |
| CN103308812B true CN103308812B (en) | 2017-09-29 |
Family
ID=49134244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210378903.4A Active CN103308812B (en) | 2012-03-06 | 2012-10-09 | Electric device and electric approach |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013184311A (en) |
| KR (1) | KR20130101963A (en) |
| CN (1) | CN103308812B (en) |
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- 2012-03-06 JP JP2012049011A patent/JP2013184311A/en active Pending
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| CN2371033Y (en) * | 1999-05-18 | 2000-03-29 | 程军海 | Tester for printing head of wire printer |
| CN1654968A (en) * | 2004-02-10 | 2005-08-17 | 富士胶片株式会社 | A method and a device for measuring forward voltage drop of a light emitting element, light source device and thermal printer |
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| CN103308812A (en) | 2013-09-18 |
| JP2013184311A (en) | 2013-09-19 |
| KR20130101963A (en) | 2013-09-16 |
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