JP5585074B2 - Power supply device, image processing device, power supply control device - Google Patents

Description

  The present invention relates to a power supply device, an image processing device, and a power supply control device.

  Patent Document 1 describes that a power supply control circuit that controls supply of power to a predetermined device cuts off supply of power to the predetermined device (power output stop type).

  Patent Document 2 describes that a printer controller (main controller) is provided with a power shut-off means for shutting off power supplied to a load (load cutting type).

JP 2001-353930 A JP 2002-055744 A

  An object of the present invention is to obtain a power supply device, an image processing device, and a power supply control device that can select a case where power output is stopped and a case where a load is cut off, and which can realize an appropriate place for the right material.

The invention according to claim 1 includes at least an image printing device of an image reading device, an image printing device, and an image communication device, and controls a functional device that executes a predetermined function, and operation and stoppage of the functional device. the power supply device for use in the image processing apparatus comprising a controller for a power supply voltage generation unit for generating power of a predetermined voltage to be supplied to said functional device, from the power supply voltage generation unit to the power supply system to the functional devices And when the image processing apparatus includes a plurality of functional devices and power is supplied from the power supply voltage generation unit to the plurality of functional devices, the function is provided in each power supply system for each functional device. A load cutoff circuit unit that cuts off power supply to the device and the power supply voltage generation unit itself, provided in the power supply voltage generation unit A power output stop circuit for stopping et power output,
In the power-saving mode functional devices to stop the power supply to the functional device, selection signal input from the previous Kiko controller may indicate that the functional device being powered from the power supply voltage generation unit is one Selecting means for selecting the load interrupting circuit unit when selecting the power output stop circuit unit and indicating that there are a plurality of functional devices supplied with power from the power supply voltage generation unit And have.

According to a second aspect of the present invention, in the first aspect of the present invention, when the controller shifts the functional device to the power saving mode, the controller instructs to cut off the power supply to the functional device. A cutoff instruction signal is output, and the power cutoff instruction signal is input to the load cutoff circuit unit or the power output stop circuit unit selected by the selection unit .

Invention of Claim 3 has the power supply device of the said Claim 1 or Claim 2, and the said controller, The electric power supply is received from the said power supply voltage generation part via the said power supply system, The said as the functional device operation and stop are controlled by the controller, the image reading device, an image processing apparatus including at least the image printing device of the image printing device, and the image communication device.

The image processing apparatus having the above configuration has at least one of an image reading unit that operates as an image reading device, an image printing unit that operates as an image printing device, an image communication unit that operates as an image communication device, and a composite function thereof. you.

According to a fourth aspect of the present invention, there is provided a power control apparatus for use in an image processing apparatus that includes at least an image printing device of an image reading device, an image printing device, and an image communication device, and includes a functional device that executes a predetermined function. a is a power supply voltage generation unit for generating power of a predetermined voltage to be supplied to said functional device, wherein provided from the power supply voltage generation unit to the power supply system to the functional device and the image processing apparatus of the plurality a function device, when the power from the power supply voltage generation unit to the plurality of functional devices is supplied, provided in each of the power supply system of a plurality of functional devices, load shedding circuit to cut off the power supply to the functional devices And a power output stop circuit unit that is provided in the power supply voltage generation unit and stops power output from the power supply voltage generation unit itself, and a selection Functional device to stop selecting means for selecting one of said load shutdown circuit unit or the power output stop circuit section controls the operation and stop of said function devices, the power supply to the functional device based on No. in the power saving mode, as said selection signal, and outputs a selection signal for selecting the power output stop circuit unit when the power supplied Ru function device from the power supply voltage generation unit is one, the power supply voltage generation unit has when power supply is Ru function device is a plurality, and a controller for outputting a selection signal for selecting said load shutdown circuit unit, from.

According to the first, third , and fourth aspects of the present invention, it is possible to select a case where the power output is stopped and a case where the load is cut off, so that an appropriate place for the right material can be realized.

According to the second aspect of the invention, based on the power-off instruction signal outputted from the controller, it is Rukoto to be shielding interrupt the power supply to the output device.

It is a schematic block diagram of the power supply device which concerns on this Embodiment. It is the schematic which shows the modification 1 of the switching structure of a power-off destination. It is the schematic which shows the modification 2 of the switching structure of a power-off destination. (A) is the Example in the case of making the power supply device which concerns on this Embodiment into an image processing apparatus, (B) is the schematic which shows the comparative example. It is an Example of the image processing apparatus applicable to this Embodiment, and is a block diagram which shows the hardware constitutions of a control unit.

  FIG. 1 is a circuit diagram of a power supply device 10 provided in an image processing apparatus according to the present embodiment. In FIG. 1, the power supply line is shown by one solid line, but in reality it is two to three wires.

  The input power line 14 drawn from the commercial power source 12 is connected to the primary side terminal 16 </ b> A of the transformer unit 16. In the transformer unit 16, the voltage of the commercial power supply 12 is input to the primary side terminal 16 </ b> A, thereby generating a 24 V power supply that is a reference voltage of the image processing apparatus on the secondary side.

  The secondary side first terminal 16B in the transformer unit 16 is connected to the low voltage power source unit 20 (LVPS / 24V) and the high voltage power source unit 22 (HVPS / -900V to -1300V) via the first switch 18. It is connected.

  The low voltage power supply unit 20 supplies power to a low voltage drive system (engine unit or the like) such as a motor or a solenoid of the image processing apparatus. The high voltage power supply unit 22 supplies power to a high voltage operation system for charging, fixing, and development.

The first switch 18 is turned on and off by a control signal outputted from the engine controller 24 to be described later, and controls the power supply or cut off from the low-voltage power supply unit 20 and the high voltage power supply unit 22.

  A second terminal 16 </ b> C on the secondary side in the transformer unit 16 is connected to the first voltage conversion unit 26. The first voltage converter 26 converts the input voltage of 24V to 3.3V (first control voltage), which is a controller control voltage, and outputs it.

The image processing apparatus is provided with an engine unit controller 24 that controls the image forming engine unit, and a main controller 28 (also referred to as a “printer controller”) that comprehensively controls the entire image processing apparatus.

  The first voltage conversion unit 26 is connected to the engine unit controller 24 via a second switch 30 and is directly connected to the main controller 28. That is, the engine controller 24 is controlled to supply the first control voltage by turning the second switch 30 on and off, while the main controller 28 is always supplied with the first control voltage. .

  The secondary-side third terminal 16 </ b> D in the transformer unit 16 is connected to the second voltage conversion unit 32. The second voltage converter 32 converts the input voltage of 24V to 5V (second control voltage), which is a controller control voltage, and outputs the converted voltage.

  The second voltage converter 32 is connected to the main controller 28 via the third switch 34. That is, the main controller 28 is configured to control the supply of the second control voltage by turning on and off the third switch 34.

  Here, the second voltage conversion unit 32 includes a power cut-off circuit 36 for cutting off the power output from the second voltage conversion unit 32 itself.

  When a power cut-off instruction signal is input to the power cut-off circuit 36 from the outside (in this embodiment, the output source is the main controller 28), the second voltage converter 32 stops its function and the power is turned off. Blocked.

  The second switch 30 and the third switch 34 correspond to the secondary side of the relay circuits 38 and 40, respectively, and the on / off operation is executed based on the input signal on the primary side. In addition, the second switch 30 and the third switch 34 are turned on in a steady state, and are turned off when the power shut-off instruction signal is input to the primary side of the relay circuits 38 and 40, respectively. ing.

  The power shutoff instruction signal is output from the main controller 28, and the signal line thereof is connected to the primary side of the relay circuit 38 that controls on / off of the second switch 30, A common contact 42C of the signal switching unit 42 is connected. The first contact 42A of the signal switching unit 42 is connected to the primary side of the relay circuit 40 that controls on / off of the third switch 34. Further, the second contact 42 </ b> B of the signal switching unit 42 is connected to the power cutoff circuit 36 of the second voltage conversion unit 32.

  The main controller 28 is connected to the operation instruction input terminal of the signal switching unit 42. A selection signal is output from the main controller 28 to the signal switching unit 42. In the signal switching unit 42, the contact 42D connected to the common contact 42C of the signal switching unit 42 is selectively selected to be either the first contact 42A or the second contact 42B by the selection signal from the main controller 28. Can be switched to. This selection signal is 1 bit and identifies the type of image processing apparatus (single function or multi-function).

A single function machine (single function) has only a print function, which is a main function (sometimes referred to as “SFP”). In addition to the print function, the multi-function device (multi-function) has a scanner function and a telephone line communication function, and has a plurality of functions such as image reading, image copying, facsimile transmission / reception (“MFP” and “multifunction device”). ”).

When the main controller 28 determines that the current power supply is unnecessary in the switching state of the signal switching unit 42 (at the time of starting the power saving mode), a power cutoff instruction signal is sent to the signal switching unit 42. In other words, on the functionality of the image processing apparatus, the form of the power supply to the power saving mode of the main controller 28 is different, interruption of the power supply line of the third switch 34 (load dump type), power-off Any one of the output cutoffs (power cutoff type) from the second voltage converter 32 by the circuit 36 is selected.

  In both the load cutoff type and the power cutoff type, a voltage of 3.3 V from the first voltage conversion unit 26 is always supplied to both the engine unit controller 24 and the main controller 28, and a voltage of 5 V is supplied from the second voltage conversion unit 32. The voltage is cut off. At this time, since the load cutoff type can selectively cut off for each load, for example, if a power line from the second voltage converter 32 to the main controller 28 is provided for each load, the load is selected. It is also possible to shut off the power. On the other hand, in the power cutoff type, the function of the second voltage converter 32 itself is stopped, so that the total load simultaneous power cutoff can be performed.

  The operation of this embodiment will be described below.

  The image processing apparatus is roughly classified into a single function machine (“SFP”) having only a print function as a main function (“SFP”), a scanner function and a telephone line communication function in addition to the print function, image reading, There are multi-function machines (“MFP”, “multi-function machine”) to which a plurality of functions such as image copying and facsimile transmission / reception are added.

  The single-function device and the multi-function device have different parts for supplying electric power during processing standby, particularly in the power saving mode.

  The single function device is configured to be able to receive an external print instruction (including reception of image information). Therefore, in the present embodiment, the control voltage (first control voltage, 3.3 V) necessary for the print instruction is continuously supplied to the main controller 28 and the engine unit controller 24, and the main controller 28 is also supplied. No other control voltage for the control system operation (second control voltage, 5 V) is required. At this time, wasteful current flows when the circuit function of the second voltage converter 32 itself is stopped rather than disconnecting the power line connected from the second voltage converter 32 to the main controller 28. Since it is suppressed, it will lead to an improvement in the energy saving effect in the power saving mode.

On the other hand, in the multi-function device, in addition to waiting for a print instruction, a system capable of recognizing user operations such as waiting for facsimile reception, an image reading instruction, and a copying instruction is adopted. In other words, in the multi-function device, since it is not a simple control program that cuts off the supply of power in the power-saving mode, it is necessary to select for each load and instruct power-off. For this reason, in the present embodiment, the circuit function of the second voltage converter 32 itself is not stopped, but the power line to the unnecessary load is cut off. In FIG. 1, there is one power line output from the second voltage converter 32. However, in a multi-function device, there are a plurality of power lines, and a power line is provided for each load that cuts off power supply. It selectively blocks.

  In the present embodiment, when selecting the power shutdown mode in the power saving mode based on the function of the image processing apparatus as described above, a selection signal is sent from the main controller 28 to the signal switching unit 42. In the present embodiment, the selection signal may be two types (1 bit).

In the signal switching unit 42, when a selection signal is input from the main controller 28, the contact is switched based on the selection signal. When the selection signal is a signal indicating a multi-function device, the common terminal 42C is connected to the first contact 42A, and the power shut-off instruction signal output from the main controller 28 thereafter is the third switch that is on in the steady state. 34 is turned off.

  When the selection signal is a signal indicating a single function machine, the common terminal 42C is connected to the second contact 42B, and the power cutoff instruction signal output from the main controller 28 thereafter is the second voltage converter 32. Is operated. As a result, the second voltage conversion unit 32 stops its own function.

The power supply apparatus 10 according to the present embodiment is commonly used regardless of whether the applied image processing apparatus is a multi-function machine or a single-function machine. At this time, the control mode in the power saving mode is different between the multi-function device and the single function device, but based on the selection signal (1 bit) from the main controller 28, the mode in which the power is shut off in the power saving mode is Since the load cutoff type or the power cutoff type is selected, it can be installed in the image processing apparatus regardless of whether it is a multi-function device or a single function device.

(Modification 1)
In the present embodiment, the signal switching unit 42 is configured as a switch. However, after the power supply device 10 of the present embodiment is once mounted in the image processing apparatus, it is replaced with another image processing apparatus. If this is not the case, the signal switching unit 42 may not be configured as a switch, but may be fixedly connected to one of the contacts by a jumper wire 44 as shown in FIG.

In other words, in the state of FIG. 2A, it is applied to a multi-function device or a single-function device. In the case of a multi-function device (MFP), as shown in FIG. 2B, the main controller 28 and the third switch 34 are connected using a jumper wire 44. In the case of a single function machine (SFP), as shown in FIG. 2C, the jumper wire 44 is used to connect the main controller 28 and the power cut-off circuit 36 of the second voltage converter 32.

(Modification 2)
In this embodiment, switching of the contact of the signal switching unit 42 is controlled based on a selection signal from the main controller 28. However, as shown in FIG. You may do it.

That is, in the case of a multi-function device (MFP), as shown in FIG. 3A, the dip switch 46 is operated (moved upward) to connect the main controller 28 and the third switch 34. In the case of a single function machine (SFP), as shown in FIG. 3B, the dip switch 46 is operated (moved upward), and the main controller 28 and the power shut-off circuit 36 of the second voltage converter 32 are connected. Connect.

Example 1
FIG. 4 shows an example in which the power supply device 10 according to the present embodiment is applied to an image processing apparatus (multifunction device or single function device).

  A LAN (local area network) 52 and a telephone line 54 are connected to the multi-function device 50. On the other hand, a LAN 58 is connected to the single function device 56.

  FIG. 4A is an example of the present embodiment, and the power supply device 10 of the multi-function device 50 and the single-function device 56 is shared. At this time, selection signals are output from the multi-function device 50 and the single-function device 56, and it is determined whether the load cutoff type or the power cutoff type is selected in the power saving mode.

  On the other hand, FIG. 4B is a comparative example with respect to the present embodiment. The multi-function device 50 is supplied with a multi-function device (for MFP) power supply device 60, and the single-function device 56 has a single function. A machine power supply (SFP) power supply 62 is supplied. That is, a dedicated power supply device is required for each.

(Example 2)
FIG. 5 shows an embodiment of an image processing apparatus 150 to which the power supply apparatus 10 according to this embodiment is applied.

The control unit 144 of the image processing apparatus 150 includes a main controller 28 . The main controller 28 includes a CPU 172, a RAM 174, a ROM 176, an I / O (input / output unit) 178, and a bus 180 such as a data bus or a control bus for connecting them.

  The I / O 178 includes a print control management unit 188 (of the engine controller 24) for controlling and managing each processing system such as a transport system in the image forming unit, a scanning exposure system for image formation, and a development system. Some) are connected.

  More specifically, the print control management unit 188 is connected to the conveyance control unit 100, the scanning exposure control unit 102, the development control unit 104, the transfer control unit 106, and the fixing control unit 108, and manages the control of each unit. .

  The print control management unit 88 may be configured to be directly connected to the bus 180 instead of the I / O 178. Here, the control related to printing is integrated in the print control management unit 188, but the control may be executed by the main control unit 170.

Further, a UI (User Interface) 182 is connected to the I / O 178. The UI 182 has a function of receiving an input instruction from the user and notifying the user of information related to image processing. Further, a hard disk 184 is connected to the I / O 178. The I / O 178 is connected to the communication network 190 through the I / F 186.

The image forming apparatus 150 serves as a multi-function device (MFP) by attaching an image reading apparatus (not shown) to the I / F 186 and connecting a telephone line.

The conveyance control unit 100, the scanning exposure control unit 102, the development control unit 104, the transfer control unit 106, and the fixing control unit 108 receive power from the power supply device 10. The power supply device 10 is classified into a commercial power supply as an input source, and is roughly classified into a control power supply unit 10A (3.3V / 5V), a low voltage power supply unit 20 (LVPS / 24V), and a high voltage power supply unit 22 (HVPS / −). 900V to -1300V). Note that the polarity of the voltage of the high-voltage power supply unit varies depending on the charging polarity of the developer (toner) to be applied, and here, the polarity is negative (−).

  The control power supply unit 10A supplies control power to each control system including the main controller 28 via the control power supply line LA. The low voltage power supply unit 20 supplies low voltage power to the transport control unit 100, the scanning exposure control unit 102, the development control unit 104, the transfer control unit 106, and the fixing control unit 108 via the low voltage power supply line LB. . Further, the high voltage power supply unit 22 mainly supplies high voltage power to the scanning exposure control unit 102, the development control unit 104, and the transfer control unit 106 via the high voltage power supply line LC.

  A selection signal (see FIG. 1) is output from the main controller 28 of the image processing apparatus 150 to the power supply apparatus 10. At this time, when the image processing apparatus 150 is used as a single function machine, the I / F 186 is set. The selection signal is changed depending on whether the image reading apparatus or the telephone line is connected to the multi-function device. For example, a low-level (L) signal is a multi-function device, a high-level (H) signal is a single-function device, and the signal switching unit 42 of the power supply device 10 is compatible with interpretation of this selection signal (L The first contact 42A may be taken with a signal, and the second contact 42B) with a H signal.

DESCRIPTION OF SYMBOLS 10 Power supply device 12 Commercial power supply 14 Input power supply line 16 Transformer part 18 1st switch 20 Low voltage power supply part 22 High voltage power supply part 24 Engine part controller 26 1st voltage converter 28 Main controller 30 2nd switch 32 2nd Voltage conversion unit 34 Third switch 36 Power cut-off circuit (power output stop circuit unit)
38, 40 Relay circuit 42 Signal switching unit

Claims (4)

Used in an image processing apparatus that includes at least an image printing device among an image reading device, an image printing device, and an image communication device, and includes a functional device that executes a predetermined function and a controller that controls operation and stop of the functional device. A power supply unit,
A power supply voltage generator that generates power of a predetermined voltage supplied to the functional device ;
If the provided from the power supply voltage generation unit to the power supply system to the functional device, and said image processing apparatus comprises a plurality of functional devices, power is supplied from the power supply voltage generation unit to the plurality of functional devices, Provided in each power supply system for each functional device, a load cutoff circuit unit that cuts off power supply to the functional device,
A power output stop circuit unit that is provided in the power supply voltage generation unit and stops power output from the power supply voltage generation unit itself;
In the power-saving mode functional devices to stop the power supply to the functional device, selection signal input from the previous Kiko controller may indicate that the functional device being powered from the power supply voltage generation unit is one Selecting means for selecting the load interrupting circuit unit when selecting the power output stop circuit unit and indicating that there are a plurality of functional devices supplied with power from the power supply voltage generation unit When,
A power supply unit having   When the controller shifts the functional device to the power saving mode, the controller outputs a power-off instruction signal instructing to cut off power supply to the functional device, and the power-off instruction signal is selected by the selection unit. The power supply device according to claim 1, wherein the power supply device is input to the load cutoff circuit unit or the power output stop circuit unit. The power supply device according to claim 1 or 2,
The controller;
Has a receives power supply from the power supply voltage generation unit via the power supply system, as the functional devices operating and stopping are controlled by the controller, the image reading device, the image printing device, and the image the image processing apparatus including at least the image printing device of the communication device. A power supply control device used in an image processing apparatus including a functional device that executes a predetermined function, including at least an image printing device among an image reading device, an image printing device, and an image communication device ,
A power supply voltage generator that generates power of a predetermined voltage supplied to the functional device ;
If the provided from the power supply voltage generation unit to the power supply system to the functional device, and said image processing apparatus comprises a plurality of functional devices, power is supplied from the power supply voltage generation unit to the plurality of functional devices, Provided in each of the power supply systems of a plurality of functional devices, a load cutoff circuit unit that cuts off power supply to the functional devices,
A power output stop circuit unit that is provided in the power supply voltage generation unit and stops power output from the power supply voltage generation unit itself;
A selection means for selecting either the load interrupt circuit unit or the power output stop circuit unit based on a selection signal;
Controls the operation and stop of said function devices, in the power saving mode functional devices to stop the power supply to the functional device, as said selection signal, the one power supply is Ru function device from the power supply voltage generation unit said power output stop circuit unit outputs a selection signal for selection if it is, the power supplied Ru function device from the power supply voltage generation unit when a plurality of the selection signal for selecting said load shutdown circuit unit A controller to output,
A power supply control device.