JP2000023354A - Equipment and method for controlling power - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an equipment and method for controlling power which enables more reliable control and the further reduction in power consumption in comparison to the conventional AC control of a copier. SOLUTION: This controller is provided with a relay 6, which controls the supply of power to halogen heaters 10, 11 and is closable even during the operation of a DC power supply 13, SCC 9 for switching the on signals of SSR modules 7, 8 at a specified frequency (kHz), a power control circuit PCC1 which supplies power to a first flat heater 18 by half-wave control via a diode, when an SSR circuit 21 is in an off state, while supplying power to the first flat heater 18 by full-wave control via the SSR circuit 21, when the SSR circuit 21 is at an on state, and a second power control circuit PCC2 which supplies power to second flat heaters 19, 20 not via an SSR circuit 23 when a power switch 3 is in an off state but supplying power to the heaters 19, 20 via the SSR circuit 23, when the power switch 3 is at an on state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power control device and a power control method, and more particularly, to a power control device and a power control device suitable for performing power control in a copying machine, a printer, a facsimile, or a combined system thereof. The present invention relates to a power control method.

[0002]

2. Description of the Related Art Conventionally, in an AC power supply circuit of a copying machine, a commercial power supply is taken out of an outlet, passed through a breaker and a noise filter, and then turned on / off by a power switch to supply the power supply to a DC power supply circuit. In addition, a heater such as a halogen heater is supplied through a door switch which is an interlock switch. In the DC power supply circuit described above, only the power supply used for the high-voltage system and the drive system is turned on and off in synchronization with the door switch.

[0003]

The above-mentioned prior art has the following problems. That is, in recent years, the speeding up, multifunctionality, and systematization of copiers have progressed, and further reliability and power saving have been demanded. However, the conventional AC control described above has a problem that it is difficult to achieve further improvement in reliability and power saving with the progress of high-speed, multifunctional, and systemized copiers.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has a power control apparatus capable of further improving reliability and reducing power consumption as compared with the conventional AC control of a copying machine. And a power control method.

[0005]

In order to achieve the above object, the present invention according to claim 1 is a power control apparatus having a stabilized DC power supply for generating a DC voltage, wherein the power control apparatus controls power supply to a load. And a power supply control means driven based on a predetermined voltage of the stabilized DC power supply and intermittent even when the stabilized DC power supply operates.

In order to achieve the above object, according to the present invention, the load is a fixing heater for fixing an image on a sheet of paper, and the power supply control means supplies power to the fixing heater. And a heater power supply relay which is driven based on a predetermined voltage of the stabilized DC power supply and is connected to an external interrupting means and can be interrupted even when the stabilized DC power supply operates.

To achieve the above object, according to the present invention, there is provided a power supply means for supplying commercial power, a protection means connected to the power supply means for cutting off power supply at the time of leakage or overcurrent, and It is characterized by comprising noise removing means connected to the protection means for removing noise, and power supply switching means connected to the stabilized DC power supply for interrupting the output of the noise removing means.

In order to achieve the above object, the present invention according to claim 4 is a second power supply control means for controlling power supply to the load via the power supply control means, and the second power supply control means. Open / close control means for switching the drive signal for a predetermined time.

In order to achieve the above object, the present invention according to claim 5, wherein the second power supply control means is a solid state relay connected to the power supply control means,
The opening / closing control means switches an ON signal of the solid state relay at a predetermined frequency for a predetermined time.

In order to achieve the above object, according to the present invention, the solid state relay is provided for each of a plurality of fixing heaters, and the plurality of fixing heaters are provided. When turning on simultaneously, the turning on timing is delayed for a predetermined time between the plurality of fixing heaters.

According to a seventh aspect of the present invention, there is provided a power supply switching device connected to the power supply switching device for switching power supply, and the load connected to the power supply switching device. First power control means for performing power control to another load based on its own on / off;
A second power control unit connected to the power supply changeover switch unit and configured to perform power control on a load different from the load based on on / off of the power supply switch unit.

In order to achieve the above object, according to the present invention as set forth in claim 8, the other loads are provided with heaters provided respectively corresponding to the first power control means and the second power control means. Wherein the first power control means has a diode and a solid-state relay that can be soft-controlled, and controls power to the heater in accordance with ON / OFF of the solid-state relay. The second power control means includes a solid state relay that can be controlled by software, a power supply path for directly supplying the output of the power supply changeover switch means to the heater, and a solid state relay that controls the output of the power supply changeover switch means. And a power supply switching relay capable of switching a power supply path for supplying power to the heater via a state relay. And performing a force control.

In order to achieve the above object, the present invention according to claim 9 is characterized in that the first power control means performs the half-wave control via the diode when the solid state relay is off. Powers the heater and, if the solid state relay is on, the solid state relay
Power is supplied to the heater by full-wave control via a state relay, and the second power control means supplies power to the heater without passing through the solid state relay when the power switch means is off. When the power switch means is on, power is supplied to the heater via the solid state relay.

According to a tenth aspect of the present invention, in accordance with the present invention, the power supply changeover switch means controls the power supply means irrespective of the on / off state of the power switch means in accordance with the use condition of the equipment. It is characterized in that it is possible to switch between power supply by outlet synchronization supplied when connected to a commercial power supply and power supply by power switch synchronization supplied in synchronization with ON / OFF of the power switch means.

In order to achieve the above object, the present invention is characterized in that it is applicable to power control of a copying machine.

In order to achieve the above object, the present invention is characterized in that it is applicable to power control of a printer.

To achieve the above object, the present invention is characterized in that the present invention is applicable to facsimile power control.

In order to achieve the above object, the present invention is characterized in that it is applicable to power control of a system having a copying machine, a printer, and a facsimile.

In order to achieve the above object, the present invention according to claim 15 is a power control method applied to a power control apparatus having a stabilized DC power supply for generating a DC voltage,
The method further includes a power supply control step of controlling power supply to a load, being driven based on a predetermined voltage of the stabilized DC power supply, and capable of intermittently operating even when the stabilized DC power supply operates.

In order to achieve the above object, according to the present invention, the load is a fixing heater for fixing an image on paper, and in the power supply control step, power is supplied to the fixing heater. And controlling the power supply by a heater power supply relay that is driven based on a predetermined voltage of the stabilized DC power supply and that is connected to an external interrupting means and that can be interrupted even when the stabilized DC power supply operates. I do.

To achieve the above object, according to the present invention, a power supply step of supplying commercial power, a protection step of cutting off power supply at the time of leakage or overcurrent, and a noise removal step of removing noise And a power open / close step of interrupting the output of the noise removing step using power switch means.

In order to achieve the above object, the present invention according to claim 18, wherein a second power supply control step for controlling power supply to the load via the power supply control step, and the second power supply control step And an opening / closing control step of switching the operation for a predetermined time.

In order to achieve the above object, the present invention according to claim 19, wherein in the second power supply control step, power supply is controlled by a solid state relay, and in the open / close control step, the solid state relay is performed. The relay ON signal is switched at a predetermined frequency for a predetermined time.

In order to achieve the above object, according to the present invention, when a plurality of fixing heaters provided corresponding to the solid state relays are simultaneously turned on, a timing for turning on the fixing heaters is determined. A predetermined time is delayed between the plurality of fixing heaters.

In order to achieve the above object, according to the present invention, there is provided a power supply switching step for performing power supply switching, and power control to a load different from the load to which the output of the power supply switching step is supplied. A power control step of performing power control on the basis of its own on / off, and a power control of performing power control on a load different from the load to which the output of the power supply switching step is supplied based on on / off of the power switch means. And two power control steps.

In order to achieve the above object, according to the present invention, the another load is provided so as to correspond to the first power control step and the second power control step, respectively. A heater, wherein in the first power control step, a diode and a soft-controllable solid-state relay are used to control power to the heater in accordance with ON / OFF of the solid-state relay. In the second power control step, a solid state relay that can be controlled by software, a power supply path for directly supplying the output of the power supply switching step to the heater, and a solid state relay that outputs the output of the power supply switching step.
A power supply switching relay capable of switching a power supply path for supplying power to the heater via a relay is used, and power control for the heater is performed according to ON / OFF of the power switch means.

In order to achieve the above object, the present invention according to claim 23, wherein in the first power control step, when the solid state relay is off, the half-wave control is performed via the diode when the solid state relay is off. While supplying power to the heater,
When the solid state relay is on, power is supplied to the heater by full-wave control via the solid state relay, and in the second power control step, when the output of the power switch means is off, The power is supplied to the heater without passing through the solid state relay, and when the output of the power switch is on, the power is supplied to the heater via the solid state relay.

According to a twenty-fourth aspect of the present invention, in the power supply switching step, power is supplied when a commercial power supply is connected irrespective of the on / off state of the power supply switch means in accordance with a use condition of a device. The power supply can be switched to any one of power supply synchronized with an outlet and power supply synchronized with a power switch synchronized with ON / OFF of the power switch means.

In order to achieve the above object, the present invention according to claim 25 is characterized in that it is applicable to power control of a copying machine.

In order to achieve the above object, the present invention described in claim 26 is characterized in that it is applicable to power control of a printer.

To achieve the above object, the present invention described in claim 27 is characterized in that it can be applied to facsimile power control.

In order to achieve the above object, the present invention according to claim 28 is characterized in that it is applicable to power control of a system having a copying machine, a printer, and a facsimile.

[0033]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 2 is a configuration diagram showing a schematic structure of the image forming apparatus (copier) according to the embodiment of the present invention. The image forming apparatus according to the embodiment of the present invention includes a platen glass 1
01, a document illumination lamp 102, a scanning mirror 103,
104, 105, imaging lens 107 and image sensor 108
・ CCD (Charge Coupled Device)
e) a CCD unit 106 having a driver 109;
The photosensitive drum 110, the cleaner 111, the pre-exposure lamp 112, the primary charger 113, the exposure unit 117, the developing unit 118, the pre-transfer charger 119, and the sheet feeding unit 1
20, 122, 124, paper feed rollers 121, 123,
125, registration roller 126, transfer charger 127
, Separation charger 128, transport belt 129, fixing device 130, flapper 131, staple sorter 132
, Feeding rollers 133, 134, 135, and 136, an intermediate tray 137, a re-feeding roller 138, a controller unit 139, an operation panel 140, and a staple unit 14.
1 and an automatic document feeder 142.

The platen glass 101 is for placing a document thereon. Documents fed from the automatic document feeder 142 are sequentially placed on the platen glass 101 in a predetermined manner. Is placed in the position. The document illumination lamp 102 is formed of, for example, a halogen lamp,
The document placed on the platen glass 101 is exposed. The scanning mirrors 103, 104, and 105 are housed in an optical scanning unit (not shown), and guide the reflected light from the document to the CCD unit 106 while reciprocating. CCD unit 1
Reference numeral 06 denotes an imaging lens 107 that forms an image of reflected light from a document on a CCD, for example, an image pickup device 10 including a CCD.
8, a CCD driver 109 for driving the image sensor 108, and the like. The image signal output from the image sensor 108 is converted into, for example, 8-bit digital data.
It is input to the controller unit 139.

The photosensitive drum 110 includes a pre-exposure lamp 112
The charge is removed in preparation for image formation. Primary charger 11
3 charges the photosensitive drum 110 uniformly. The exposing means 117 is composed of, for example, a semiconductor laser driver or the like, and based on image data processed by a controller unit 139 that performs image processing and overall control of the apparatus, the exposure unit 117
10 is exposed to form an electrostatic latent image. The developing device 118 contains a black developer (toner). The pre-transfer charger 119 applies a high voltage before transferring the toner image developed on the photosensitive drum 110 to a sheet. The paper feed units 120, 122, and 124 store transfer paper, and include paper feed rollers 121, 123, and 125, respectively.

By driving a predetermined paper feed roller of each of the paper feed rollers 121, 123, and 125 provided in each of the paper feed units 120, 122, and 124, the transfer paper in the paper feed unit corresponding to the drive paper feed roller is moved into the apparatus. After the image is temporarily stopped at the position where the registration roller 126 is provided, the image is formed on the photosensitive drum 110 at a writing timing, and is re-fed. The transfer charger 127 transfers the toner image developed on the photosensitive drum 110 to a fed transfer sheet. The separation charging device 128 separates the transfer paper having undergone the transfer operation from the photosensitive drum 110. The toner remaining on the photosensitive drum 110 without being transferred is a cleaner 111
Will be recovered by The conveyance belt 129 conveys the transfer paper on which the transfer process has been completed to the fixing device 130, and the fixing device 130 fixes the toner image on the transfer paper by, for example, heat.

The flapper 131 controls the transfer path of the transfer sheet after the completion of the fixing process in one of the directions in which the staple sorter 132 or the intermediate tray 137 is arranged. The paper discharged by the staple sorter 132 is sorted into bins (not shown), and the staple unit 141 staples according to an instruction from the controller unit 139. The feed rollers 133 to 136 feed the transfer paper, for which the fixing process has been completed once, to the intermediate tray 137 by inversion (multiplexing) or non-inversion (both sides). The re-feed roller 138 conveys the transfer sheet placed on the intermediate tray 137 again to the position where the registration roller 126 is provided. The controller unit 139 includes a microcomputer and an image processing unit (not shown), and performs the above-described image forming operation in accordance with an instruction from the operation panel 140.

FIG. 1 is a block diagram showing an embodiment of the present invention.
3 is a block diagram illustrating a configuration of a power control device mounted on the image forming apparatus illustrated in FIG. The power control device according to the embodiment of the present invention includes an earth leakage breaker (CB) 1, a noise filter (NF) 2, a power switch (SW1) 3,
Interlock switch (SW2) 4, power supply changeover switch (SW3) 5, relay (RLY1) 6, SSR (solid state relay) module (SSR1) 7, S
SR module (SSR2) 8, SCC (SSR controller) 9, halogen heater (H1) 10, halogen heater (H2) 11, thermoswitch (TP) 12, DC
Power supply (DCP) 13, DCC (DC power supply controller)
14, first power control circuit (PCC1) 15, second power control circuit (PCC2) 16, temperature control circuit (TCC)
17, a first planar heater (H3) 18, a second planar heater (H4) 19, and a third planar heater (H5) 20.

The power supply cord PLG for supplying commercial power of a predetermined voltage is connected to an outlet on the plug side, and the respective terminals of the hot / neutral on the opposite side are connected to the earth leakage of the protection device. Breaker (C
B) It is connected to 1. The earth leakage breaker (CB) 1
The power supply is configured to be cut off at the time of electric leakage or overcurrent. A noise filter (NF) 2 is connected to the earth leakage breaker (CB) 1 in series with its output. The noise filter (NF) 2 removes terminal noise and radiation noise. A power switch (SW1) 3, a power supply changeover switch (SW3) 5, and a relay (RLY1) 6 are connected to the noise filter (NF) 2. Power switch (SW
1) 3 has a reset function that allows the user to directly turn off the output of the noise filter (NF) 2 by turning it on or off or by software control.

The output of the relay (RLY1) 6 is supplied to the SSR module (SSR1) 7 and the SSR module (SSR
2) connected to a halogen heater (H1) 10 and a halogen heater (H2) 11 via a thermoswitch (TP) 12; The relay (RLY1) 6 supplies power to the halogen heater (H1) 10 and the halogen heater (H2) 11, and cuts off the power supply in synchronization with the interlock switch (SW2) 4 for preventing electric shock from the user. SSR module (SSR1) 7, SSR module (SSR
2) 8 is composed of two circuits: an abnormality detection circuit capable of controlling the power supply to the halogen heater (H1) 10 and the halogen heater (H2) 11 by software and an SSR circuit.

The output of the power switch (SW1) 3 is DC
Power supply (DCP) 13 and power supply changeover switch (SW3) 5
It is connected to the. The power supply changeover switch (SW3) 5
Regardless of whether the power switch (SW1) 3 is on or off, if the power supply cord PLG is connected to the commercial power supply, the outlet is synchronized when the power is supplied, and the power switch is synchronized when the power switch (SW1) 3 is turned on and off. The power supply can be switched between outlet synchronization and power switch synchronization according to the usage conditions of the device. The output of the power supply changeover switch (SW3) 5 is connected to the interlock switch (SW3).
2) It is connected in series to 4 AC2 circuits. The interlock switch (SW2) 4 is driven in synchronism with opening and closing of the front door of the image forming apparatus (copier) to prevent danger to the user.
The C1 circuit and the AC2 circuit can be mechanically interrupted at a time.

A first power control circuit (PCC1) 15 and a second power control circuit (PCC2) 16 are connected in parallel to the output of the interlock switch (SW2) 4.
The first power control circuit (PCC1) 15 is connected to a first planar heater (H3) 18 via a temperature control circuit (TCC) 17.
It is connected to the. Second power control circuit (PCC2) 1
6 is connected to a second planar heater (H4) 19 and a third planar heater (H5) 20. The first power control circuit (PCC1) 15 has a diode (D1) 22 and an SSR circuit (SSR3) 21 that can be software-controlled. S
When the SR circuit (SSR3) 21 is off, the first planar heater (H) is controlled by half-wave control via the diode (D1) 22.
3) Supply power to 18 and use the SSR circuit (SSR3) 21
Is turned on, power is supplied from the SSR circuit (SSR3) 21 to the first planar heater (H3) 18 by full-wave control.

The second power control circuit (PCC2) 16
It has a 1C contact relay (RLY2) 24 and a software-controllable SSR circuit (SSR4) 23. When the power switch (SW1) 3 is off, the SSR circuit (SSR
4) The second planar heater (H4) directly without passing through 23
19. When the power is supplied to the third planar heater (H5) 20 and the power switch (SW1) 3 is on, the second planar heater (H4) is passed through the SSR circuit (SSR4) 23 to perform software control. ) 19, power is supplied to the third planar heater (H5) 20.

The output of the DC power supply (DCP) 13 includes an output synchronized with the power switch (SW1) 3 and a DC power supply (DCP).
In other words, there is a software SW synchronization which is output only when a soft switch on an operation unit (not shown) is turned on. The DCC 14 controls a DC power supply (DCP) 13.

In this case, the correspondence between each part of the power control apparatus according to the embodiment of the present invention and each component in the claims is as follows. The power supply cord PLG corresponds to the power supply means, the earth leakage breaker 1 corresponds to the protection means,
The noise filter 2 corresponds to noise removing means, the power switch 3 corresponds to power switch means, the power supply changeover switch 5 corresponds to power supply changeover switch means, the relay 6 corresponds to power supply control means, and the SSR modules 7, 8 Corresponds to the second power supply control means, SCC9 corresponds to the switching control means, halogen heaters 10 and 11 correspond to the load, DC power supply 13 corresponds to the stabilized DC power supply, and the first power control circuit 15 Corresponds to the first power control means, the second power control circuit 16 corresponds to the second power control means, and the first, second, and third planar heaters 18 to 20 correspond to different loads. I do.

Next, the operation of the power control device mounted on the image forming apparatus according to the embodiment of the present invention configured as described above will be described.

When the power supply changeover switch (SW3) 5 is turned on and the power supply cord PLG is inserted into the outlet, the first planar heater (H3) 18 is energized by half-wave control to reach a predetermined temperature. While being controlled, the second planar heater (H4) 19 and the third planar heater (H5) 20 are energized by full-wave control. In this state, when the front door of the image forming apparatus (copier) is opened, the interlock switch (SW2) 4 is turned off, and the first planar heater (H3) 1
8, the second planar heater (H4) 19, and the third planar heater (H5) 20 are turned off. Power switch (S
When W1) 3 is turned on, an interlock switch (SW2) is connected via a DC power supply (DCP) 13, which is a load of the power switch (SW1) 3, and a power supply changeover switch (SW3) 5.
4 is fed.

When a soft switch on an operation unit (not shown) is pressed, a remote signal of the DC power supply (DCP) 13 is input, and when the output voltage of the DC power supply (DCP) 13 rises, the relay (RLY1) 6 is activated. Turns on and S
SR module (SSR1) 7, SSR module (S
SR2) 8 enables the power supply to the halogen heater (H1) 10 and the halogen heater (H2) 11 to be soft-controlled, the relay (RLY2) 24 is turned on, and the second planar heater is turned on by the SSR circuit (SSR4) 23. (H4) 1
9. The power supply to the third planar heater (H5) 20 can be controlled by software. In this state, when the front door of the image forming apparatus (copier) is opened, the interlock switch (SW2) 4
Is turned off, the first planar heater (H3) 18, the second planar heater (H4) 19, and the third planar heater (H5) 2
The power supply to 0 and the drive signal of the relay (RLY1) 6 are cut off. Then, the power supply to the halogen heater (H1) 10 and the halogen heater (H2) 11 is also cut off.

The SSR module (SSR1) 7 performs temperature detection at predetermined time intervals by two thermistors (not shown) and a CPU (not shown) so that the halogen heater (H1) 10 or the halogen heater (H2) 11 becomes a predetermined temperature. Is controlled on and off by software. When the halogen heater (H1) 10 and the halogen heater (H2) 11 are simultaneously turned on, the turning-on timing is shifted by a predetermined time (for example, 100 msec) between the halogen heater (H1) 10 and the halogen heater (H2) 11. , SC
The inrush current flowing through the SSR module (SSR1) 7 and the relay (RLY1) 6 is reduced by switching the ON signal of the SSR module (SSR1) 8 at a predetermined frequency (for example, several KHz) for a predetermined time by C9.

As described above, according to the power control apparatus according to the embodiment of the present invention, the power supply cord PLG for supplying the commercial power, the earth leakage breaker 1 for cutting off the electric supply at the time of earth leakage or overcurrent, the noise, Noise filter 2 that removes noise
A power switch 3 capable of interrupting the output of the noise filter 2, a relay which controls power supply to the halogen heaters 10 and 11, is driven based on a predetermined voltage of the DC power supply 13, and can be interrupted even when the DC power supply 13 is operating. 6, SSR modules 7 and 8 for controlling power supply to halogen heaters 10 and 11 via relay 6, SCC 9 for switching on signals of SSR modules 7 and 8 at a predetermined time of several KHz, and according to usage conditions of the equipment. The power supply is switched between power supply synchronized with the outlet supplied when the power supply cord PLG is connected to the commercial power supply and power supply synchronized with the power switch synchronized with the on / off of the power switch 3 regardless of whether the power switch 3 is on or off. The power supply switch 5 and the diode 22 when the SSR circuit 21 is off.
Power supply to the first planar heater 18 by half-wave control via the SSR circuit 21 and, when the SSR circuit 21 is on, power supply to the first planar heater 18 by full-wave control via the SSR circuit 21 Circuit 15 and SS when power switch 3 is off
The first and second planar heaters 19, 2
0, and when the power switch 3 is on, S
First and second planar heaters 19 and 20 via SR circuit 23
And the second power control circuit 16 that supplies power to the power supply, the following operations and effects are achieved.

In the above configuration, the halogen heater 10,
The relay 6 that controls power supply to the power supply 11 can be turned on and off even when the DC power supply 13 operates. Also, an SSR module 7 for controlling power supply to the halogen heaters 10, 11;
The ON signal of 8 is switching-controlled at a predetermined time several KHz. When the SSR circuit 21 is off, the first planar heater 18 is controlled by half-wave control, and when the SSR circuit 21 is on, power is controlled by the first planar heater 18. When the power switch 3 is off, the power is not passed through the SSR circuit 23. The power supply to the first and second planar heaters 19 and 20 is controlled via the SSR circuit 23. Therefore, in the embodiment of the present invention, compared with the conventional AC control of a copying machine,
There is an effect that reliability can be further improved and power consumption can be reduced.

In the above-described embodiment of the present invention, the case where the power control device controls the power of the image forming apparatus (copier) has been described as an example. The power control is not limited to the power control of the (copier), but may be the power control of the printer, the power control of the facsimile, the image forming apparatus (copier), the printer,
Of course, the present invention can be applied to power control of a system having a facsimile. Further, the present invention may be applied to a system including a plurality of devices or to an apparatus including a single device.

[0054]

As described above, according to the power control apparatus of the first aspect of the present invention, there is provided a power control apparatus having a stabilized DC power supply for generating a DC voltage. In addition, since the power supply control means is driven based on the predetermined voltage of the stabilized DC power supply and can be switched on and off even when the stabilized DC power supply operates, the following effects can be obtained. By performing power supply control by means of power supply control means that can be intermittent even during operation of the stabilized DC power supply, reliability can be further improved and low power consumption can be improved as compared with AC control of conventional equipment, for example, AC control of conventional copiers. There is an effect that power can be achieved.

According to the power control apparatus of the present invention, the load is a fixing heater for fixing an image on paper, and the power supply control means controls power supply to the fixing heater. In addition, since the heater power supply relay is driven based on a predetermined voltage of the stabilized DC power supply and is connected to an external interrupting means and can be interrupted even when the stabilized DC power supply operates, the following effects are obtained. . By controlling the power supply using a heater power supply relay that can be switched on and off even when the DC stabilized power supply is operating, the reliability can be improved and the reliability can be further improved compared to the AC control of conventional equipment, for example, the AC control of conventional copiers. There is an effect that power consumption can be achieved.

According to the power control apparatus of the present invention, the power supply means for supplying the commercial power, the protection means connected to the power supply means for cutting off the power supply at the time of leakage or overcurrent, and the protection means And a power switch connected to the stabilized DC power supply and interrupting the output of the noise remover, the following effects are obtained. As described above, there is an effect that reliability can be further improved and power consumption can be reduced as compared with AC control of a conventional device, for example, AC control of a conventional copier.

According to the power control device of the present invention, the second power supply control means for controlling the power supply to the load via the power supply control means, and the driving of the second power supply control means Since the switching control means for switching the signal for a predetermined time is provided, the following effects are obtained. By performing control for switching the drive signal of the second power supply control means for controlling power supply to the load for a predetermined time, similarly to the above, AC control of a conventional device, for example, compared with AC control of a conventional copier, There is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control apparatus of the present invention, the second power supply control means is a solid state relay connected to the power supply control means, and the open / close control means is Since the ON signal of the solid state relay is switched at a predetermined frequency for a predetermined time, the following effects are obtained. By performing the control of switching the ON signal of the solid state relay that controls the power supply to the load at a predetermined frequency for a predetermined time, similarly to the above,
As compared with the AC control of the conventional apparatus, for example, the AC control of the conventional copier, there is an effect that the reliability can be further improved and the power consumption can be reduced.

According to the power control apparatus of the present invention, the solid state relay is provided corresponding to each of a plurality of fixing heaters, and the plurality of fixing heaters are simultaneously turned on. In this case, the ON timing is delayed for a predetermined time between the plurality of fixing heaters, so that the following effects are obtained. When a plurality of fixing heaters are turned on at the same time, by performing a control to delay the timing of turning on for a predetermined time between the plurality of fixing heaters,
As described above, there is an effect that reliability can be further improved and power consumption can be reduced as compared with AC control of a conventional device, for example, AC control of a conventional copier.

According to a seventh aspect of the present invention, there is provided a power supply switching device connected to the power supply switching device for switching power supply, and connected to the power supply switching device and separate from the load. First power control means for performing power control on a load based on its own on / off operation, and on / off control of the power supply switch means for controlling power to a load different from the load connected to the power supply changeover switch means Therefore, the following effects can be obtained. Power control is performed by first power control means that performs power control to a load different from the load based on its own on / off, and power control to a load different from the load is performed by turning on the power switch means. By performing power control by the second power control means based on / off, the reliability can be further improved as compared with the conventional AC control of a device, for example, the conventional AC control of a copying machine, as described above. There is an effect that low power consumption can be achieved.

According to the power control device of the present invention, the another load is a heater provided corresponding to each of the first power control means and the second power control means. Wherein the first power control means has a diode and a soft-controllable solid state relay,
The power control to the heater is performed in accordance with ON / OFF of the solid state relay, and the second power control means controls a soft state controllable solid state relay and an output of the power supply changeover switch means. A power supply path for directly supplying power to the heater, and a power supply switching relay capable of switching a power supply path for supplying an output of the power supply changeover switch to the heater via the solid state relay; Since the power control to the heater is performed in accordance with ON / OFF of the power supply, the following effects are obtained. By controlling power to the heater according to ON / OFF of a solid state relay that can be controlled by software and controlling power to the heater according to ON / OFF of the power switch means, the same as above. In addition, there is an effect that reliability can be further improved and power consumption can be reduced as compared with AC control of a conventional device, for example, AC control of a conventional copying machine.

According to a ninth aspect of the present invention, when the solid state relay is off, the first power control means controls the heater by half-wave control via the diode. Power and the solid
When the state relay is on, power is supplied to the heater by full-wave control via the solid state relay, and the second power control means controls the solid state relay when the power switch means is off. Power is supplied to the heater without a relay, and when the power switch is on, power is supplied to the heater via the solid state relay. Therefore, the following effects are obtained. When the solid state relay is off, half-wave control is used.
When the power switch is off, power is supplied to the heater via the solid state relay. When the power switch is off, the heater is supplied via the solid state relay. Thus, similarly to the above, there is an effect that reliability can be further improved and power consumption can be reduced as compared with AC control of a conventional device, for example, AC control of a conventional copier.

According to a tenth aspect of the present invention, the power supply changeover switch means is provided with a commercial power supply for the power supply means irrespective of on / off of the power supply switch means in accordance with the use condition of the equipment. Power supply at the time of connection to the
Since the power can be switched to any one of power supply synchronized with a power switch that is supplied in synchronization with turning off, the following effects are obtained. According to the usage conditions of the equipment, it is possible to switch to either power supply by outlet synchronization or power supply by power switch synchronization. In comparison, there is an effect that the reliability can be further improved and the power consumption can be reduced.

According to the power control apparatus of the present invention, since the present invention can be applied to power control of a copying machine, the following effects can be obtained. Compared with conventional copier AC control,
There is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control device of the twelfth aspect of the present invention, since it is applicable to the power control of a printer, the following effects can be obtained. As compared with the conventional AC control of a printer, there is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control apparatus of the thirteenth aspect of the present invention, since the power control apparatus can be applied to facsimile power control, the following effects can be obtained. Compared with the conventional facsimile AC control, there is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control apparatus of the present invention, since it can be applied to power control of a system having a copying machine, a printer, and a facsimile, the following effects can be obtained. As compared with the conventional AC control of a system including a copying machine, a printer, and a facsimile, there is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control method of the present invention, there is provided a power control method applied to a power control apparatus having a stabilized DC power supply for generating a DC voltage. Since the apparatus has a power supply control step that is driven based on a predetermined voltage of the stabilized DC power supply and can be intermittently operated even when the stabilized DC power supply operates, the following effects are obtained. By performing power supply control in a power supply control step that can be intermittent even when the DC stabilized power supply is operating, reliability can be further improved and low power consumption can be improved, compared to AC control of conventional equipment, for example, AC control of conventional copiers. There is an effect that power can be achieved.

According to the power control method of the present invention, the load is a fixing heater for fixing an image on a sheet, and in the power supply control step, power supply to the fixing heater is controlled. The power supply is controlled by a heater power supply relay which is driven based on a predetermined voltage of the stabilized DC power supply and is connected to an external interrupting means and which can be interrupted even during operation of the stabilized DC power supply. It works. By controlling the power supply using a heater power supply relay that can be switched on and off even when the DC stabilized power supply is operating, the reliability can be improved and the reliability can be further improved compared to the AC control of conventional equipment, for example, the AC control of conventional copiers. There is an effect that power consumption can be achieved.

According to the power control method of the present invention, a power supply step of supplying commercial power, a protection step of cutting off power supply at the time of leakage or overcurrent, a noise removal step of removing noise, Since the method includes a power supply opening / closing step of interrupting the output of the noise removal step using a power supply switch means, the following effects are obtained. As described above, there is an effect that reliability can be further improved and power consumption can be reduced as compared with AC control of a conventional device, for example, AC control of a conventional copier.

According to the power control method of the present invention, a second power supply control step for controlling power supply to the load via the power supply control step, and an operation of the second power supply control step And an open / close control step of switching for a predetermined time, the following effects are obtained.
By performing control for switching the operation of the second power supply control step for controlling power supply to the load for a predetermined time, similarly to the above, AC control of conventional equipment, for example, compared to AC control of a conventional copier, This has the effect of improving the reliability of the device and reducing power consumption.

According to the power control method of the present invention, in the second power supply control step, the solid power
Power supply is controlled by a state relay, and in the switching control step, the ON signal of the solid state relay is switched at a predetermined frequency for a predetermined time, so that the following effects are obtained. By performing the control of switching the ON signal of the solid state relay that controls the power supply to the load at a predetermined frequency for a predetermined time, similarly to the above,
As compared with the AC control of the conventional apparatus, for example, the AC control of the conventional copier, there is an effect that the reliability can be further improved and the power consumption can be reduced.

According to the power control method of the present invention, when a plurality of fixing heaters provided respectively corresponding to the solid state relays are simultaneously turned on, the plurality of fixing heaters are turned on at the same timing. The following effects are obtained because the predetermined time is delayed between the fixing heaters. When a plurality of fixing heaters are turned on at the same time, by performing control for delaying the ON timing between the plurality of fixing heaters for a predetermined time, similarly to the above, AC control of a conventional device, for example, a conventional copier In comparison with the AC control, there is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control method of the present invention, a power supply switching step of switching power supply and an output of the power supply switching step are supplied to control power to a load different from the load. A first power control step based on ON / OFF of the power supply, and a second power control based on ON / OFF of the power switch means, in which an output of the power supply switching step is supplied and power to a load different from the load is controlled. With the power control step, the following effects are obtained. Performing power control by a first power control step of performing power control to a load different from the load based on its own on / off;
By performing power control in a second power control step of performing power control on a load different from the load based on ON / OFF of the power switch means, similarly to the above, AC control of a conventional device, for example, Compared with conventional copier AC control,
There is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control method of the present invention, the another load is a heater provided corresponding to each of the first power control step and the second power control step. In the first power control step, using a diode and a solid state relay capable of soft control, performing power control to the heater according to ON / OFF of the solid state relay,
In the second power control step, a solid state relay that can be controlled by software, a power supply path that directly supplies the output of the power supply switching step to the heater, and a solid state relay that outputs the output of the power supply switching step And a power supply switching relay capable of switching a power supply path for supplying power to the heater via the power supply unit, and performing power control on the heater in accordance with ON / OFF of the power switch means. By controlling power to the heater according to ON / OFF of a solid state relay that can be controlled by software and controlling power to the heater according to ON / OFF of the power switch means, the same as above. In addition, there is an effect that reliability can be further improved and power consumption can be reduced as compared with AC control of a conventional device, for example, AC control of a conventional copying machine.

According to the power control method of the present invention, in the first power control step, when the solid state relay is off, the heater is controlled by half-wave control via the diode. In addition to supplying power, when the solid state relay is on, power is supplied to the heater by full-wave control via the solid state relay, and in the second power control step, the output of the power switch means is When the power is off, power is supplied to the heater without passing through the solid state relay, and when the output of the power switch means is on, the power is supplied to the solid state relay.
To power the heater through a state relay,
The following effects are obtained. When the solid state relay is off, power is supplied to the heater by half-wave control, and when the solid state relay is on, power is supplied to the heater by full-wave control.When the power switch is off, the heater does not pass through the solid state relay. By performing control to supply power to the heater via a solid state relay, similar to the above, it is possible to further improve the reliability and reduce the power compared with the conventional AC control of a device, for example, the conventional AC control of a copying machine. There is an effect that power consumption can be achieved.

According to the power control method of the present invention, in the power supply switching step, power is supplied when a commercial power supply is connected regardless of whether the power switch means is on or off, according to a use condition of the device. Since it is possible to switch between power supply by outlet synchronization and power supply by power switch synchronization supplied in synchronization with the on / off of the power switch means, the following effects are obtained. As described above, the reliability can be further improved by making it possible to switch between power supply by outlet synchronization and power supply by power switch synchronization. Thus, there is an effect that power consumption can be reduced.

According to the power control method of the twenty-fifth aspect of the present invention, since the power control method can be applied to the power control of a copying machine, the following effects can be obtained. Compared with conventional copier AC control,
There is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control method of the present invention, it is possible to apply the present invention to the power control of a printer. As compared with the conventional AC control of a printer, there is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control method of the twenty-seventh aspect of the present invention, since it is applicable to facsimile power control, the following effects can be obtained. Compared with the conventional facsimile AC control, there is an effect that reliability can be further improved and power consumption can be reduced.

According to the power control method of the twenty-eighth aspect of the present invention, the present invention can be applied to power control of a system having a copying machine, a printer, and a facsimile, and has the following effects. As compared with the conventional AC control of a system including a copying machine, a printer, and a facsimile, there is an effect that reliability can be further improved and power consumption can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a power control device mounted on an image forming apparatus according to an embodiment of the present invention.

FIG. 2 is a configuration diagram illustrating a schematic structure of an image forming apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Earth leakage breaker 2 Noise filter 3 Power switch 4 Interlock switch 5 Power supply changeover switch 6 Relay 7, 8 SSR module 9 SCC 10, 11 Halogen heater 13 DC power supply 15 1st power control circuit 16 2nd power control circuit 17 Temperature Control circuit 18 First planar heater 19 Second planar heater 20 Third planar heater

Continued on the front page F term (reference) 2C061 AP03 AP04 AP07 AQ06 HH11 HK20 HT05 HT13 2H027 DA26 ED25 EJ18 ZA07 5C062 AB22 AB46 AB49 AB51 BA00 5G065 AA00 AA01 DA06 EA06 FA01 GA04 GA06 GA07 JA07 KA01 MA03 MA07 MA03 DD05 EA01 EA28 EA37 EB01 EB25 FF14 LL07

Claims (28)

[Claims] 1. A power control device having a stabilized DC power supply for generating a DC voltage, comprising: controlling power supply to a load; being driven based on a predetermined voltage of the stabilized DC power supply; A power control device comprising power supply control means that can be turned on and off even during operation. 2. The load is a fixing heater for fixing an image on a sheet, and the power supply control unit controls power supply to the fixing heater and is driven based on a predetermined voltage of the DC stabilized power supply. 2. The power control device according to claim 1, wherein the power control device is a relay for supplying power to the heater, which is connected to an external interrupting means and can be interrupted even when the stabilized DC power supply operates. 3. Power supply means for supplying commercial power, protection means connected to the power supply means for cutting off power supply at the time of leakage or overcurrent, noise removal means connected to the protection means for removing noise, 3. The power control device according to claim 1, further comprising: a power switch connected to a stabilized DC power supply for interrupting an output of the noise removing unit. 4. A power supply control device comprising: a second power supply control means for controlling power supply to the load via the power supply control means; and an open / close control means for switching a drive signal of the second power supply control means for a predetermined time. The power control device according to claim 1, wherein: 5. The second power supply control means is a solid state relay connected to the power supply control means, and the switching control means transmits an ON signal of the solid state relay for a predetermined time at a predetermined frequency. The power control device according to claim 4, wherein switching is performed by: 6. The solid state relay is provided corresponding to each of a plurality of fixing heaters, and when the plurality of fixing heaters are simultaneously turned on, a timing of turning on the plurality of fixing heaters is determined. The power control device according to claim 5, wherein the power control device is delayed by a predetermined time. 7. A power supply switching means connected to the power supply switching means for switching power supply, and power control to a load different from the load connected to the power supply switching means based on its own on / off operation. First power control means for performing power control to a load different from the load connected to the power supply changeover switch means;
The power control device according to claim 1, further comprising: a second power control unit that performs the operation based on turning off. 8. The another load is a heater provided corresponding to each of the first power control unit and the second power control unit, wherein the first power control unit includes a diode, A solid state relay that can be controlled by software, and controls power to the heater in accordance with on / off of the solid state relay;・ State ・
A relay, a power supply path for directly supplying the output of the power supply switch to the heater, and a power supply capable of switching a power supply path for supplying the output of the power supply switch to the heater via the solid state relay. The power control device according to claim 7, further comprising a switching relay, wherein power control for the heater is performed according to ON / OFF of the power switch means. 9. The first power control means supplies power to the heater by half-wave control via the diode when the solid state relay is off, and turns on the solid state relay when the solid state relay is off. In the case, power is supplied to the heater by full-wave control via the solid state relay, and the second power control means does not pass through the solid state relay when the power switch means is off. 9. The power supply to the heater, and power supply to the heater via the solid state relay when the power switch means is on.
The power control device as described in the above. 10. The power supply changeover switch means, in accordance with a use condition of a device, power supply by outlet synchronization supplied when the power supply means is connected to a commercial power supply regardless of on / off of the power supply switch means, The power control device according to any one of claims 7 to 9, wherein the power control device can be switched to any one of power supply in synchronization with a power switch that is supplied in synchronization with on / off of a power switch means. 11. The power control apparatus according to claim 1, wherein the power control apparatus is applicable to power control of a copying machine. 12. The power control device according to claim 1, wherein the power control device is applicable to power control of a printer. 13. The power control apparatus according to claim 1, wherein the power control apparatus is applicable to facsimile power control. 14. The power control apparatus according to claim 1, wherein the power control apparatus is applicable to power control of a system including a copying machine, a printer, and a facsimile. 15. A power control method applied to a power control device having a stabilized DC power supply for generating a DC voltage, wherein the method controls power supply to a load and is driven based on a predetermined voltage of the stabilized DC power supply. And a power supply control step which can be interrupted even when the stabilized DC power supply operates. 16. The power supply according to claim 16, wherein the load is a fixing heater for fixing an image on a sheet.
Power supply is controlled by a heater power supply relay that controls power supply to the fixing heater and that is driven based on a predetermined voltage of the DC stabilized power supply and is connected to external interrupting means and can be interrupted even when the DC stabilized power supply operates. The power control method according to claim 15, wherein 17. A power supply step of supplying commercial power,
A protection step for disconnecting power supply in case of earth leakage or overcurrent;
16. The method according to claim 15, further comprising: a noise removing step of removing noise; and a power supply opening / closing step of interrupting an output of the noise removing step using power switch means.
7. The power control method according to 6. 18. A power supply control method comprising: a second power supply control step for controlling power supply to the load via the power supply control step; and an opening / closing control step for switching the operation of the second power supply control step for a predetermined time. The power control method according to any one of claims 15 to 17, wherein: In the second power supply control step, power supply control is performed by a solid state relay, and in the opening / closing control step, an on signal of the solid state relay is switched at a predetermined frequency for a predetermined time. 19. The power control method according to claim 18, wherein 20. When a plurality of fixing heaters provided respectively corresponding to the solid state relays are simultaneously turned on, a timing at which the plurality of fixing heaters are turned on is delayed by a predetermined time between the plurality of fixing heaters. Claim 1
9. The power control method according to item 9. 21. A power supply switching step of performing power supply switching, and a first power control step of performing power control to a load different from the load to which the output of the power supply switching step is supplied based on its own on / off operation. And a second power control step in which an output of the power supply switching step is supplied and power control to a load different from the load is performed based on ON / OFF of the power switch means. 21. The power control method according to any one of 15 to 20. 22. The another load is a heater provided corresponding to each of the first power control step and the second power control step. In the first power control step, a diode and , Software controllable solid
Using a solid state relay with a state relay
Controlling power to the heater in accordance with ON / OFF of a relay, and in the second power control step, directly supplies power to the heater with a solid state relay that can be controlled by software and an output of the power supply switching step. A power supply path, and a power supply switching relay capable of switching a power supply path for supplying an output of the power supply switching step to the heater via the solid state relay. The power control method according to claim 21, wherein power control is performed on the heater. 23. In the first power control step, when the solid state relay is off, power is supplied to the heater by half-wave control via the diode, and the solid state relay is turned on. In this case, the heater is supplied with full-wave control via the solid state relay, and in the second power control step, when the output of the power switch means is off, the heater is not passed through the solid state relay. 23. The power control method according to claim 22, further comprising: supplying power to said heater, and supplying power to said heater via said solid state relay when an output of said power switch means is on. 24. In the power supply switching step, power supply is performed in synchronization with an outlet supplied when a commercial power supply is connected irrespective of ON / OFF of the power supply switch means, and ON / OFF of the power supply switch means in accordance with a use condition of a device. The power control method according to any one of claims 21 to 23, wherein the power control method can be switched to any one of power supply synchronized with a power switch. 25. The power control method according to claim 15, wherein the power control method is applicable to power control of a copying machine. 26. The power control method according to claim 15, wherein the power control method is applicable to power control of a printer. 27. The power control method according to claim 15, wherein the power control method is applicable to facsimile power control. 28. The power control method according to claim 15, wherein the power control method is applicable to power control of a system including a copying machine, a printer, and a facsimile.