CN103676536A - Power supply control device and image forming apparatus - Google Patents
Power supply control device and image forming apparatus Download PDFInfo
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- CN103676536A CN103676536A CN201310409952.4A CN201310409952A CN103676536A CN 103676536 A CN103676536 A CN 103676536A CN 201310409952 A CN201310409952 A CN 201310409952A CN 103676536 A CN103676536 A CN 103676536A
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Abstract
The invention provides a power supply control device capable of implementing two measures on an electrolytic capacitor, namely the discharge and the transient interruption of the electrolytic capacitor. The power supply control device comprises an AC/DC conversion part (30) used for smoothing the electrolytic capacitor, an AC power-failure detection unit (S1) and a discharging unit (R1) of a smoothing electrolytic capacitor (C2). The device also comprises a human body detection unit (S2) used for detecting the presence of a human body, and a discharge control part (CC1) used for controlling the smoothing electrolytic capacitor (C2). Upon the detection of the cut-off of an AC power supply (Vac) and the absence of any human body by means of the human body detection unit (S2), the control part (CC1) enables the discharge without the adoption of the smoothing electrolytic capacitor (C2). Meanwhile, when the presence of a human body is detected, the discharge is carried out by means of the smoothing electrolytic capacitor (C2). The invention also provides an image forming apparatus provided with the above power supply control device.
Description
Technical field
The present invention relates to power control, relate in particular to the power control that possesses AC/DC converter section and the image processing system that possesses this power control.
Background technology
In image processing system at printer, manifolder etc. based on electronic photo mode, be conventionally equipped with the power supply that possesses AC/DC converter section.In such power supply, when being disconnected, input power makes smoothly with electrolytic condenser, to discharge to prevent electric shock accidents.At ratings, be in jumbo power supply, when the underload actions such as energy saver mode, when when there is out of control grade, user wants device to reset, powered-down switch, if powered-down switch, because power supply in electrolytic condenser in remain voltage, so exist power supply not to be cut off, the problem of CPU of can not resetting.
And, when attendant's device for opening approaches power supply when power supply breaks down, there is the caused Danger Electric shock risk of residual voltage by above-mentioned electrolytic condenser.Therefore, if by cut off the electricity supply to make the electrolytic condenser in power supply discharge without exception after the stipulated time, in the poor area of power status, there is the hit capacity loss of power supply, the possibility of the action cut of device.
In patent documentation 1, recorded the control that makes electrolytic condenser electric discharge when ac-input power supply is cut off.But, in this is controlled, due to no matter whether device has people around, all make its electric discharge, so there is the problem that can not carry out hit reply.
In patent documentation 2, recorded a kind of control as described below, in this is controlled, if by testing circuit detect connector be connected in apparatus main body between being connected of capacitor unit separated this situation with apparatus main body, make electrolytic condenser electric discharge.But, in this is controlled, due to detect with the cut-out of ac-input power supply independently, people pulls out this situation of capacitor unit makes electrolytic condenser electric discharge, so there is the conducting of power switch, the problem of disconnection can not reset.
That is, in any technology of recording in patent documentation 1,2, all very inabundant for the electric discharge of electrolytic condenser and the countermeasure of hit capacity two aspects.
Patent documentation 1: TOHKEMY 2004-282921 communique
Patent documentation 2: Japanese kokai publication hei 08-205401 communique
Summary of the invention
The object of the present invention is to provide a kind of enforcement for power control and the image processing system of the electric discharge of electrolytic condenser and the countermeasure of hit capacity two aspects.
The power control of the 1st mode of the present invention, it possesses and has level and smooth AC/DC converter section, AC power supplies disconnection detection unit and the above-mentioned level and smooth discharge cell with electrolytic condenser of using electrolytic condenser, it is characterized in that,
Above-mentioned power control possesses:
People detection unit for detection of people; And
Control the control part of the above-mentioned level and smooth electric discharge with electrolytic condenser,
Above-mentioned control part is when going out AC power supplies by above-mentioned AC power supplies disconnection detection unit inspection and be cut off, in the situation that not detecting people by above-mentioned people detection unit, do not make the above-mentioned level and smooth charge discharge with electrolytic condenser, and, in the situation that detecting people, make the above-mentioned level and smooth charge discharge with electrolytic condenser.
The image processing system of the 2nd mode of the present invention is characterised in that to possess above-mentioned power control.
In above-mentioned power control, when AC power supplies is cut off, only, in the situation that detecting people, make to be equipped on smoothly discharging with electrolytic condenser of AC/DC converter section.That is, when input power is cut off, while having people near device, make electrolytic condenser electric discharge, thereby near people protection (being in most cases attendant (service man)) avoids electric shock accidents.On the other hand, if there be nobody nearby even if input power is cut off and does not also make electrolytic condenser electric discharge, thereby prevents that power supply from resetting and the decline of the hit capacity of device.
According to the present invention, can to people, protect in the electric discharge thing of electrolytic condenser, and, in the situation that can guarantee that people's security can prevent the decline of hit capacity.
Accompanying drawing explanation
Fig. 1 means the brief configuration figure as the image processing system of an embodiment.
Fig. 2 means the block diagram as the power control of the 1st embodiment.
Fig. 3 means the process flow diagram of the control procedure in the 1st embodiment.
Fig. 4 means the block diagram as the power control of the 2nd embodiment.
Fig. 5 means the process flow diagram of the control procedure in the 2nd embodiment.
Fig. 6 means other routine process flow diagram of control procedure.
Description of reference numerals
1 ... printer; 20A, 20B ... power control; 30 ... AC/DC converter section; C2 ... level and smooth with electrolytic condenser; Vac ... AC power; S1 ... AC power supplies disconnection detection sensor; S2 ... human perception sensor; S3 ... touch sensor; R1 ... discharge resistance; CC1 ... charge/discharge control circuit.
Embodiment
Below, with reference to accompanying drawing, the embodiment of power control involved in the present invention and image processing system is described.Wherein, to the same parts in each figure, same section, give common Reference numeral, and the repetitive description thereof will be omitted.
(brief configuration of image processing system, with reference to Fig. 1)
First, with reference to Fig. 1, the brief configuration of the image processing system as an embodiment is described.This image processing system is configured to the panchromatic printer 1 based on electronic photo mode.
This printer 1 is configured to juxtaposition Y (yellow), M (fuchsin), C (blue-green) coloured image and forms tandem (tandem) mode that forms the photoreceptor 2k of use with photoreceptor 2y, 2m, 2c and B (black) black image, disposes the images such as developing cell 3y, 3m, 3c, 3k form the laser scan unit 4 of using with element and image exposure in the surrounding of each photoreceptor 2y, 2m, 2c, 2k.Directly over photoreceptor 2y, 2m, 2c, 2k, dispose intermediate transfer belt 5, and directly over it, dispose toner feed unit 6y, 6m, 6c, the 6k that supplies with new toner to each developing cell 3y, 3m, 3c, 3k.About the processing of the formation of the sub-image on each photoreceptor 2y, 2m, 2c, 2k, toner image, above-mentioned well known, the description thereof will be omitted herein.
Under laser scan unit 4, dispose paper feeding cassette 10.The paper using of being supplied with seriatim by this paper feeding cassette 10 is transported to the clamping part between intermediate transfer belt 5 and transfer roll 7 by roller 11,12 etc., and toner image is transferred in paper using by 2 times from intermediate transfer belt 5.Then, paper using is sent to fixation unit 8 and is subjected to the hot photographic fixing of toner, and is discharged to the discharge pallet 9 above main body from distributing roller 13.
Above photoreceptor or roller etc. are driven by following motor.That is paper using induction system, intermediate transfer belt 5 and black photoreceptor 2k that, main motor M 1 drives from 10 to 2 transfer sections of paper feeding cassette (transfer roll 7).Photographic fixing motor M 2 drives fixation unit 8.Black development motor M 3 drives black developing cell 3k.Colour development motor M 4 drives colour development unit 3y, 3m, 3c.Color sensitive body motor M 5 drives color sensitive body 2y, 2m, 2c.
(the 1st embodiment of power control, with reference to Fig. 2 and Fig. 3)
As shown in Figure 2, power control 20A as the 1st embodiment is the line L and the device that has been connected AC/DC converter section 30 on line N at AC power Vac, in addition, on online L, N, also via bidirectional triode thyristor (TRIAC) TR1, be connected with the heating lamp H1 of fixation unit 8.
AC/DC converter section 30 consists of diode D1, D2, D3, D4 and level and smooth electricity consumption electrolysis condenser C2, discharge resistance R1 and transformer T1, and possesses charge/discharge control circuit CC1, AC power supplies disconnection detector S1 and human perception sensor S2.Electrolytic condenser C2 and discharge resistance R1 between power lead DC1, DC2 with mutual stateful connection arranged side by side.One end of discharge resistance R1 is connected in the efferent of charge/discharge control circuit CC1 by MOS field effect transistor Q2.From the alternating voltage of AC power Vac input, by diode D1～D4, carried out rectification, and carried out smoothing by electrolytic condenser C2.
Input part at charge/discharge control circuit CC1 is connected with AC power supplies disconnection detector S1 and human perception sensor S2.AC power supplies disconnection detector S1 is connected in line L, N via line LS1, NS1.Human perception sensor S2 utilizes infrared ray, temperature etc. to come direct-detection to have the sensor of the approaching situation of people.
On the armature winding of transformer T1, be connected in series with MOS field effect transistor Q1, by the next energy to primary side transmission, cut-out primary side of conducting, cut-off of this transistor Q1.Secondary winding possesses the lead-out terminal t1 of 24V and the lead-out terminal t2 of 5V, and level and smooth by diode D5, D6 and electrolytic condenser C3, C4 rectification respectively.The lead-out terminal t1 of 24V is used as the power supply terminal of the drive system of above-mentioned each motor M 1～M5 etc.The lead-out terminal t2 of 5V is used as the power supply terminal of the CPU dispatch control system of controlling on the whole printer 1.
If AC power Vac is cut off, the voltage between line LS1, NS1 changes, and corresponding to this, changes, and detecting device S1 exports AC cut-off signal ACS1 to charge/discharge control circuit CC1.In addition, if having people near human perception sensor S2 perception, human perceptual signal MS1 is exported to charge/discharge control circuit CC1.Charge/discharge control circuit CC1 is when the cut situation of AC power supplies being detected by AC power supplies disconnection detector S1, in the situation that people being detected by human perception sensor S2, do not make smoothly with the electric charge of electrolytic condenser C, not discharge, and in the situation that people being detected, export emit signal DC01 so that transistor Q2 conducting, make smoothly to use the charge discharge of electrolytic condenser C2.Now, electric charge is emitted as heat by discharge resistance R1.
Instantaneous voltage drop while considering the cut-out of AC power Vac, smoothly has with electrolytic condenser C2 the capacity that makes printer 1 running in exchanging cycling time (20ms) as 1 of hit capacity.When human perception sensor S2 perceives people, in the situation that detecting device S1 detects the cut-out of AC power Vac, after exchanging cycling time (20ms) as 1 of hit capacity, make transistor Q2 conducting, by discharge resistance R1, make the charge discharge charging in electrolytic condenser C2.When sensor S2 does not perceive people, even if detecting device S1 detects the cut-out of AC power Vac, also off transistor Q2, electrolytic condenser C2 does not discharge.
By above control, can in the level and smooth electric discharge with electrolytic condenser C2, to people, protect, and in the situation that can guarantee that people's security can prevent the decline of hit capacity.
Next, with reference to Fig. 3, the control procedure of above-mentioned power control 20A is described.If power supply is switched on, if detect around and have people to have (step S1 is yes) by human perception sensor S2, and, if the cut-out (step S2 is yes) of AC power Vac detected by AC power supplies disconnection detector S1, in the time of after 20ms (step S3 is yes), make electrolytic condenser C2 electric discharge (step S4).
(the 2nd embodiment of power control, with reference to Fig. 4 and Fig. 5)
As shown in Figure 4, power control 20B as the 2nd embodiment is a kind of device as described below, its have be arranged at printer 1 guidance panel for user by the touch sensor S3 of various parameters input or switch etc., the human perception sensor S2 that replaces above-mentioned power control 20A to be comprised with this.That is, by touch sensor S3, be operated to indirectly detect people's proximity printing machine 1 (being more specifically power control 20B).In addition, touch sensor or switch are not limited to and are arranged at guidance panel.
In power control 20B as this 2nd embodiment; this installs other structure and moves with identical as the power control 20A of above-mentioned the 1st embodiment; and, can in level and smooth with in the electric discharge of electrolytic condenser C2 for people protection and in the situation that can guarantee that people's security can prevent that the decline of hit capacity from being also identical aspect this.
Next, with reference to Fig. 5, the control procedure in above-mentioned power control 20B is described.If power supply is switched on, if detect by touch sensor S3, there is (step S11 is yes) in someone around, if during timer counting 10 seconds (step S12 is yes), by AC power supplies disconnection detector S1, detect the cut-out (step S13 is yes) of AC power Vac, while having passed through 20ms (step S14 is yes), make electrolytic condenser C2 electric discharge (step S15).If within 10 seconds, do not carry out the control that makes electrolytic condenser C2 electric discharge after (step S12 is no) at timer counting, if be due to from detecting moment of people through 10 seconds, in most cases for this people, left printer 1.
(control of the discharge time based on pattern, with reference to Fig. 6)
In the situation that above-mentioned printer 1 has the 1st pattern and than few the 2nd pattern of the 1st pattern power consumption as its pattern, in the above-mentioned the 1st and the 2nd embodiment, from by AC power supplies disconnection detector S1, detect AC power Vac be cut off to the level and smooth time till discharging with electrolytic condenser C2, when the 1st pattern of execution and when the 2nd pattern of execution, be identical.
On the other hand, also can be by being set as to the level and smooth time till discharging with electrolytic condenser C2 being cut off from detect AC power Vac by AC power supplies disconnection detector S1, relatively long when the 1st pattern of execution, relatively short when the 2nd pattern of execution.That is, in the situation that printer 1 has the different pattern of load, with respect to the capacity of the electrolytic condenser C2 of hit capacity, be, to select with maximum load.Therefore, if in the action under standby mode or little the 2nd pattern of sleep pattern even load, can be by making the beginning of electric discharge postpone a little to promote hit capacity.
Fig. 6 represents to make accordingly not identical control procedure of electric discharge start time of electrolytic condenser C2 with the pattern of printer 1.In Fig. 6, step S11～S13 is identical with the control procedure shown in Fig. 5.If detect AC power Vac at step S13, be cut off, (step S21 is yes) during the action under the large printing model of load, when through 20ms, (step S22 be yes) makes electrolytic condenser C2 start discharge (step S28).The energy of electrolytic condenser C2 is to have considered in the situation that the energy of being cut down after the 20ms as the hit capacity of printer 1.
During action under standby mode (step S23 is yes), when through 100ms, (step S24 be yes) makes electrolytic condenser C2 start discharge (step S28).Due to residual the energy that is equivalent to compare with printing model the electrolytic condenser C2 of the part that power consumption reduces under standby mode, so start to discharge 100ms after.Next, during action under sleep pattern (step S25 is yes), when through 500ms, (step S26 be yes) makes electrolytic condenser C2 start discharge (step S28).This is to consider that sleep pattern is less than standby mode load.
During action under the pattern beyond the above-mentioned pattern, when through 1 second, (step 27 be yes) makes electrolytic condenser C2 start discharge (step S28).These other pattern can be assumed to be the further low-power consumption mode as energy conservation standard.Although there is the hit capacity of long duration during action under this low-power consumption mode, if by until start the time of electric discharge and set longlyer, hinder the replacement of carrying out power supply pass, opening.Therefore, in this control example, the upper limit is made as to 1 second.And, will also can be made as the time delay in this control example corresponding to pattern and meet time of maximum hit capacity.
(other embodiment)
In addition, power control involved in the present invention and image processing system are not limited to the device in above-described embodiment, can in the scope of its aim, make various changes.
Particularly, the trickle part of the structure of AC/DC converter section 30 is arbitrarily.In addition,, as image processing system, be certainly also not limited to above-mentioned printer 1.
As mentioned above, the present invention is conducive to power control or image processing system, especially can in the electric discharge of electrolytic condenser, for people, protect and can prevent this aspect of decline of hit capacity, and the present invention has good effect.
Claims (6)
1. a power control, it possesses and has the level and smooth AC/DC converter section with electrolytic condenser, AC power supplies disconnection detection unit and the described level and smooth discharge cell with electrolytic condenser, it is characterized in that, and described power control possesses:
People detection unit, it is for detection of people; And
Control part, controls the described level and smooth electric discharge with electrolytic condenser,
When going out AC power supplies by described AC power supplies disconnection detection unit inspection and be cut off, described control part does not make the described level and smooth charge discharge with electrolytic condenser in the situation that people not detected by described people detection unit, and in the situation that people being detected, makes the described level and smooth charge discharge with electrolytic condenser.
2. power control according to claim 1, is characterized in that,
Described people detection unit is human body detecting sensor,
In the situation that the stipulated time from the cut-out of AC power supplies crosses described human perception sensor and detects people to being cut to stop-pass, described control part is controlled the described level and smooth electric discharge with electrolytic condenser.
3. power control according to claim 1, is characterized in that,
Touch sensor or the switch of described people detection unit for being operated by user,
In the situation that the stipulated time from the cut-out of AC power supplies till cut off described touch sensor or switch is operated to detect people, described control part is controlled the described level and smooth electric discharge with electrolytic condenser.
4. according to the power control described in any one in claims 1 to 3, it is characterized in that,
There is the 1st pattern and 2nd pattern fewer than the 1st pattern power consumption,
From by described AC power supplies disconnection detection unit inspection, go out AC power supplies be cut to carry out described level and smooth with the time till the electric discharge of electrolytic condenser when carrying out described the 1st pattern with identical when carrying out described the 2nd pattern.
5. according to the power control described in any one in claims 1 to 3, it is characterized in that,
There is the 1st pattern and 2nd pattern fewer than the 1st pattern power consumption,
From by described AC power supplies disconnection detection unit inspection, go out AC power supplies be cut to carry out described level and smooth relatively long, relatively short when carrying out described the 2nd pattern when carrying out described the 1st pattern with the time till the electric discharge of electrolytic condenser.
6. an image processing system, is characterized in that,
Possesses the power control described in any one of claim 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012199110A JP5765309B2 (en) | 2012-09-11 | 2012-09-11 | Power supply control apparatus and image forming apparatus |
| JP2012-199110 | 2012-09-11 |
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| Publication Number | Publication Date |
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| CN103676536A true CN103676536A (en) | 2014-03-26 |
| CN103676536B CN103676536B (en) | 2016-03-09 |
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| CN201310409952.4A Active CN103676536B (en) | 2012-09-11 | 2013-09-10 | Power control and image processing system |
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| CN (1) | CN103676536B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110597037A (en) * | 2018-08-31 | 2019-12-20 | 京瓷办公信息系统株式会社 | Image forming apparatus with a toner supply device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7010140B2 (en) * | 2018-05-21 | 2022-01-26 | 株式会社リコー | Power supply and image forming equipment |
| JP2021093833A (en) * | 2019-12-10 | 2021-06-17 | 日立Astemo株式会社 | Electronic control device |
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| JPH08289539A (en) * | 1995-04-11 | 1996-11-01 | Nec Shizuoka Ltd | Switching power supply system |
| JPH0937562A (en) * | 1995-07-17 | 1997-02-07 | Mitsubishi Electric Corp | Inverter device |
| JP2003173483A (en) * | 2001-09-28 | 2003-06-20 | Mieko Tsuyusaki | Control device and portable terminal device |
| US20090313493A1 (en) * | 2008-06-12 | 2009-12-17 | Canon Kabushiki Kaisha | Information processing apparatus and control method therefor |
| JP2014089539A (en) * | 2012-10-30 | 2014-05-15 | Nippon Telegr & Teleph Corp <Ntt> | Message management system |
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2012
- 2012-09-11 JP JP2012199110A patent/JP5765309B2/en active Active
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- 2013-09-10 CN CN201310409952.4A patent/CN103676536B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08289539A (en) * | 1995-04-11 | 1996-11-01 | Nec Shizuoka Ltd | Switching power supply system |
| JPH0937562A (en) * | 1995-07-17 | 1997-02-07 | Mitsubishi Electric Corp | Inverter device |
| JP2003173483A (en) * | 2001-09-28 | 2003-06-20 | Mieko Tsuyusaki | Control device and portable terminal device |
| US20090313493A1 (en) * | 2008-06-12 | 2009-12-17 | Canon Kabushiki Kaisha | Information processing apparatus and control method therefor |
| JP2014089539A (en) * | 2012-10-30 | 2014-05-15 | Nippon Telegr & Teleph Corp <Ntt> | Message management system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110597037A (en) * | 2018-08-31 | 2019-12-20 | 京瓷办公信息系统株式会社 | Image forming apparatus with a toner supply device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014057382A (en) | 2014-03-27 |
| CN103676536B (en) | 2016-03-09 |
| JP5765309B2 (en) | 2015-08-19 |
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