JP2000116023A - Control device and control method for power supply of image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control device and a control method of a power supply of an image forming apparatus capable of effectively utilizing a predetermined rated power by optimizing a charging timing of a storage battery. I do. If the night charging mode is not set, a user-set time input from a numeric keypad at a charging time, for example, 20:00 is set as a charging start time and 8:00 is set as a charging end time. When the timer IC 308 determines that the current time is within the charging time range, the storage battery 1200 is charged by turning on the switch 1201. On the other hand, when it is not within the charging time range, the input power to the storage battery 1200 is shut off by turning off the switch 1201.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device and a control method for a power supply of an image forming apparatus, and more particularly, to a commercial power supply and a control method.
The present invention relates to a control device and a control method for a power supply of an image forming apparatus that uses a power supply from a storage battery charged by the commercial power supply.

[0002]

2. Description of the Related Art Conventionally, in an image forming apparatus typified by an electrophotographic copying machine, in order to cope with an increase in copying speed, many copying systems including applications such as an automatic document feeder and a sorter are used. By functionalization,
The power consumed during the operation of the copier has also been increasing.

In such a situation, in order to keep the rated power of the copying machine within a predetermined value, for example, the power supply to the heating means of the fixing device is limited. I have.

[0004]

In the above-mentioned conventional example, if the power supply to the heating means of the fixing unit is limited,
Insufficient heat of the fuser causes insufficient fixing,
In order to prevent the occurrence of defective fixing, there is a case where a problem arises in that the copying speed must be reduced to cope with the problem.

In addition, when a large amount of power is supplied to a copying machine, a voltage of a commercial power supply may drop, causing a problem that lighting equipment flickers.

SUMMARY OF THE INVENTION An object of the present invention is to provide a control device and a control method of a power supply of an image forming apparatus which can effectively utilize a predetermined rated power of the image forming apparatus by optimizing charging timing of a storage battery. Is to do.

[0007]

According to a first aspect of the present invention, a power supply control device for an image forming apparatus uses a commercial power supply and a power supply from a storage battery charged by the commercial power supply. The power supply control device of the image forming apparatus, comprising: a time recognition unit that recognizes a time; and a control unit that controls charging of the storage battery by the commercial power supply according to the time recognized by the time recognition unit. Features.

According to a second aspect of the present invention, there is provided a power supply control apparatus for an image forming apparatus, wherein the control means controls the time recognized by the time recognition means to be a predetermined time during the night. The charging of the storage battery by the commercial power supply is performed during the time between the two.

According to a third aspect of the present invention, there is provided a power supply control device for an image forming apparatus according to the first or second aspect, wherein the control means controls the time recognized by the time recognition means by a user. The storage battery is charged by the commercial power supply during a predetermined period of time.

According to another aspect of the present invention, there is provided a power supply control device for an image forming apparatus, comprising: a power supply for an image forming apparatus that uses a commercial power supply and a power supply from a storage battery charged by the commercial power supply; In the control device, a commercial power supply state recognizing unit that recognizes an amount of supply of the commercial power to the image forming apparatus, and a supply of the commercial power to the image apparatus recognized by the commercial power supply state recognizing unit. Control means for controlling charging of the storage battery by the commercial power supply according to the amount.

According to a fifth aspect of the present invention, there is provided a power supply control device for an image forming apparatus, wherein the control unit controls the image forming apparatus by the commercial power supply state recognition unit. When the amount of power supplied from the commercial power supply to the apparatus is equal to or less than a predetermined value, the storage battery is charged by the commercial power supply.

According to a sixth aspect of the present invention, in the power supply control device for an image forming apparatus according to the fourth or fifth aspect, the commercial power supply state recognizing means includes a state of a power switch of the commercial power supply. A power switch state recognizing means for recognizing the state of the power supply, wherein the control means charges the storage battery with the commercial power when the power switch is in an off state.

According to a seventh aspect of the present invention, in the power supply control device for an image forming apparatus according to any one of the fourth to sixth aspects, the control unit includes the commercial power supply state recognition unit. When the power supply amount of the commercial power supply to the image forming apparatus recognized by the above is equal to or more than a predetermined value, power is supplied to a predetermined load by the storage battery.

According to an eighth aspect of the present invention, there is provided a power supply control device for an image forming apparatus according to any one of the first to seventh aspects, wherein the image forming apparatus includes a plurality of heating means. A fixing device, wherein the control unit supplies power from the storage battery to at least one of the plurality of heating units.

According to another aspect of the present invention, there is provided a method of controlling a power supply of an image forming apparatus, comprising the steps of: using a commercial power supply and a power supply from a storage battery charged by the commercial power supply; The control method is characterized by including a time recognition step of recognizing time and a control step of controlling charging of the storage battery by the commercial power supply according to the time recognized in the time recognition step.

According to a tenth aspect of the present invention, in the method of controlling a power supply of the image forming apparatus according to the ninth aspect, in the control step, the time recognized in the time recognition step is a predetermined time during the night. The charging of the storage battery by the commercial power supply is performed during the time between the two.

According to an eleventh aspect of the present invention, in the method of controlling a power supply of the image forming apparatus according to the ninth or tenth aspect, in the control step, the time recognized in the time recognition step is set by a user. The storage battery is charged by the commercial power supply during a predetermined period of time.

According to another aspect of the present invention, there is provided a method of controlling a power supply of an image forming apparatus, comprising the steps of: using a commercial power supply and a power supply from a storage battery charged by the commercial power supply; In the control method, a commercial power supply state recognizing step of recognizing a supply amount of the commercial power to the image forming apparatus, and supplying the commercial power to the image apparatus recognized by the commercial power supply state recognizing unit. Controlling the charging of the storage battery by the commercial power supply according to the amount.

According to a thirteenth aspect of the present invention, in the method of controlling a power supply of an image forming apparatus according to the twelfth aspect, in the control step, the image forming apparatus recognizes in the commercial power supply state recognizing step. When the amount of power supplied from the commercial power supply to the apparatus is equal to or less than a predetermined value, the storage battery is charged by the commercial power supply.

According to a fourteenth aspect of the present invention, in the method of controlling a power supply of an image forming apparatus according to the twelfth or thirteenth aspect, the step of recognizing a commercial power supply state includes a state of a power switch of the commercial power supply. A power switch state recognizing step of recognizing the state of the battery. In the control step, the storage battery is charged by the commercial power supply when the power switch is off.

According to a fifteenth aspect of the present invention, in the method of controlling a power supply of an image forming apparatus according to any one of the twelfth to fourteenth aspects,
When the commercial power supply amount to the image forming apparatus recognized in the commercial power supply state recognition step is equal to or greater than a predetermined value, power is supplied to a predetermined load by the storage battery.

According to a sixteenth aspect of the present invention, in the power supply control method for an image forming apparatus according to any one of the ninth to fifteenth aspects, the image forming apparatus includes a plurality of heating means. A fixing device is provided, and in the control step, power is supplied from the storage battery to at least one of the plurality of heating units.

[0023]

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

FIG. 1 shows an embodiment of a power supply control device for an image forming apparatus according to the present invention. The image forming apparatus shown in FIG. 1 includes a copying machine, and includes a copying machine main body 100 and a circulating automatic document feeder (feeder) (hereinafter referred to as “R”) for automatically feeding a document.
DF) 200 and a sorting device (hereinafter, referred to as a “sorter”) 250. The RDF 200 and the sorter 250 can be used in any combination with the copying machine main body 100.

The RDF 200 automatically supplies a document to a document table glass 101 serving as a document table. The original is fed to the original platen glass 1 by the manual original feeder 210.
01 is supplied. The copier body 100 has an optical system 102 as a means for reading an image of a document placed on a document table glass 101. The optical system 102 includes a document illumination lamp (exposure lamp) 103 and a scanning lamp. It comprises a mirror, a lens 143, a motor 104 and the like.
The exposure lamp 103 illuminates the original while scanning the original by the action of the motor 104, and irradiates the photosensitive drum 105 with light reflected from the original by the scanning mirror and the lens 143.

Around the photosensitive drum 105, a primary charger 106, a blank exposure unit 107, a potential sensor 108, a developing device 109, a transfer charger 110, a separation charger 111, and a cleaning device 112 And is equipped with. An image is recorded on the photosensitive drum 105 by these components.

The photosensitive drum 105 has a main motor 113
1 rotates in the direction of the arrow shown in FIG. 1 and is corona-charged by the primary charger 106. This photosensitive drum 10
When an optical system 102 irradiates the reflected light of the original onto the surface 5, an electrostatic latent image is formed. This electrostatic latent image is developed by the developing device 109 and is visualized as a toner image.

On the other hand, the transfer paper sent from the upper cassette 114 or the lower cassette 115 into the main body 100 by the paper feed rollers 118 and 119 via the pickup rollers 116 and 117 is transferred by the registration rollers 120 to the leading end of the toner image and the transfer paper. After the timing is adjusted so that the leading end coincides with the leading end, the sheet is fed to the photosensitive drum 105, and the transfer charger 11
From 0, the toner image is transferred. After this transfer, the transfer paper is separated from the photosensitive drum 105 by the separation charger 111,
The toner is guided to the fixing roller 144 by the transport belt 121, and is fixed by pressurizing and heating the fixing device 122. Fixing device 12
Reference numeral 2 includes a plurality of fixing heaters 310 (heating means) described later. Thereafter, the transfer paper is discharged to the outside of the copying machine main body 100 by the discharge roller 123 via the discharge flapper 127. The surface of the photosensitive drum 105 is cleaned by the cleaning device 112.

Further, for example, 40
A deck 124 capable of storing 00 transfer papers is provided. The lifter 125 of the deck 124 is
The transfer paper 6 rises according to the amount of the transfer paper so that the transfer paper 6 always contacts the transfer paper 6.

The transfer paper sent from the discharge roller 123 is switched by the discharge flapper 127 between a path on the double-sided recording side or the multiple recording side (lower transport path 128) and a path on the discharge side (sorter 250). . Lower transport path 1
28 turns over the transfer sheet sent out from the discharge roller 123 through the reversing path 129, and then guides the transfer sheet to the re-feed tray 130.

At the time of double-sided recording (double-sided copying) or multiple recording (multiple copying), the discharge flapper 127 is raised upward, and the copied transfer sheet is turned over via the transport paths 128 and 129 to re-feed the tray. 130. At this time, the multiplex flapper 131 is tilted rightward during double-sided recording, and the multiplex flapper 131 is tilted leftward during multiplex recording. At the time of the next backside printing or multiplex printing, the transfer paper stored in the refeed tray 130 is guided to the registration roller 120 of the main body via the path 133 by the feed roller 132 one by one from below.

When the transfer paper is to be inverted and discharged from the main body, the discharge flapper 127 is raised upward and the flapper 131 is discharged.
Is tilted to the right, the copied transfer paper is transported to the transport path 219 side, and the rear end of the transfer paper is transported to the second transport roller side by the reversing roller 142 after passing the first transport roller 140, The transfer paper is turned over by the discharge roller 134 and discharged outside the apparatus.

There are a plurality of sensors (not shown) for detecting the transfer sheet in the transfer path of the transfer sheet, and detects that the transfer sheet has not reached each sensor by a predetermined timing (delay jam detection). If a paper jam is detected (jam detection) such as detection that the transfer paper does not fall out of the sensor by a predetermined timing (stagnant jam detection), and if a paper jam is detected, the apparatus is stopped after a predetermined operation. Then, a predetermined paper jam display (jam display) is performed.

FIG. 2 shows the operation unit 6 provided on the main body 100.
00 shows the arrangement.

In FIG. 2, a reset key 601 is used when setting the copy mode to the standard mode, a top key 602 is used when stopping copying, and a start key 603 is used when starting copying. The numeric keypad 604 is used to input a numerical value for setting the number of copies, and the clear key 605 is used to clear the numerical value input by the numeric keypad 604 to set the number of copies to one. The password key 606 is used when setting the password mode, and the preheating key 607 is used when setting / releasing the preheating mode. Preheating key 6
When the preheating mode is set by 07, the power consumption can be reduced by lowering the temperature of the fixing unit.

The interrupt key 608 is used for interrupt copying, and the user mode key 609 is used for setting / releasing a user mode such as use setting and timer setting. The user mode key 609 also sets the night charging mode of the storage battery and the setting mode of the charging time of the storage battery in the present embodiment. The input of the charging time when the setting mode of the charging time is selected by the user mode key 609 is performed by the ten keys 604.
The guide key 610 is used to display a description of the mode.

Message display 700 is 320 *
240 dot transmissive LCD (liquid crystal) unit 701
And a backlight 702 composed of a cold cathode tube.
A 15 * 20 key matrix touch panel 703 is arranged on the front surface, and various setting mode displays, various status displays, and key displays corresponding to key inputs on the touch panel 703 are performed.

FIG. 3 shows the display of the message display 700 and the key arrangement.

A display unit 710 displays a magnification, a selected paper feed cassette, the number of copies, and the like. The reduction / enlargement key 711 is used for reducing / enlarging the fixed magnification. The magnification key 712 is used for returning the magnification to the same magnification (100%). Paper deck 124, multi-bypass 150
Use each when selecting.

When the zoom mode is set, the zoom key 714 is slightly smaller than the key 715.
3%), the copy density key 716 is used to manually adjust the copy density.
The AE key 717 is used to set / enable the automatic density adjustment (AE) mode.
At the time of release, the sorter key 718 is used when selecting the sort mode, the stable mode, and the group mode, respectively. The double-sided key 719 is used to set / cancel the double-sided mode, and the application mode key 720 is used to select an application mode not displayed on the basic screen.

FIG. 4 shows a configuration of a power supply control device of the image forming apparatus of the present invention.

In FIG. 4, a control circuit (controller)
1004 (control means) includes a CPU 1004a, a ROM 1
004b, RAM 1004c, etc.
The copy sequence is generally controlled based on the program stored in 004b.

The thermistor 302 detects the surface temperature of the fixing roller 144, and the value converted by the A / D converter 301 is input to the controller 1004. The controller 1004 controls the surface temperature of the fixing roller 144 to a predetermined value based on the detection value of the thermistor 302. The A / D converter 301 is connected to a current detection unit 1203 described below.

The high-voltage unit 304 includes the primary charger 10
6. A predetermined potential is applied to the charging system such as the transfer charger 110 and the developing device 109, and the high voltage unit 304 is controlled by the high voltage controller 303. Motor control unit 305
Controls the driving of a motor 306 such as various stepping motors and a main drive motor. DC load control unit 307
Controls driving of a solenoid for the pickup roller 116, a clutch for the registration roller 120, and a fan. The sensors 308 are for detecting a paper jam or the like of the transfer paper, and the detection signal is transmitted to the controller 10.
04 is input.

The AC driver 1000 controls the supply of AC power to the AC load 309 such as the document illumination lamp 103 and the fixing heater 310. The timer IC 1210 (time recognition means) is connected to the controller 1004 and has a CPU
1004a detects the current time by the timer IC 1210, and controls the charging of the storage battery 1200 by a process described later.

The commercial power input from the input power plug (PLUG) 311 is input to a switch (SW) 1201 and a current detection unit 1203 (commercial power supply state recognition means), a main switch (MSW) 1001, and a door switch (DSW) 1007, which is input to the power supply 1100.
Supply power.

The current detection section 1203 detects the value of the current supplied to the power supply 1100, and the detected current detection signal is A / D converted by the A / D converter 301, and
4 is input. Here, in the present embodiment, the current detection unit 1203 is provided as a commercial power supply state recognition unit, but the CPU 1004 does not use a special hardware circuit.
It is also possible to recognize the power supply state based on the number of loads that are turned on.

The MSW detecting section 1204 (power switch state recognizing means) detects whether or not a voltage is generated at the output of the main switch 1001 so that the main switch 1
001 is detected, and the detected MSW detection signal is input to the controller 1004.

A switch (SW) 1201 is a switch such as an electromagnetic relay, and the controller 1004 controls charging of the storage battery 1200 by switching the switch 1201. In addition, storage battery 1200 has a circuit for converting AC of commercial power supply to DC, whereby AC is charged to storage battery 1200 as a DC voltage.

A switch (SW) 1202 is a switch such as an electromagnetic relay. The output of the storage battery 1200 and the commercial power supply downstream of the door switch 1007 are input thereto.
Reference numeral 04 switches the power supplied to the plurality of fixing heaters 310 via the AC driver 1000 as needed to the storage battery side or the commercial power supply side. It should be noted that the storage battery 1200
Since the power supplied to the driver 1000 via the switch 1202 is DC, the DC is converted into AC inside the AC driver 1000 and supplied to the fixing heater 310.

In this embodiment, when the door switch 1007 or the main switch 1001 is turned off or the like,
If power supply to the fixing roller is not necessary, SW1
202 is switched so that an input from a commercial power supply downstream of the door switch 1007 is output.

The paper deck 124 is a paper feeder for increasing the number of sheets of transfer paper, the feeder 200 is an automatic document feeder for automatically setting a plurality of originals,
The sorter 250 is a sorting device for sorting the discharged transfer paper, and includes a paper deck 124, a feeder 2
00, each of the sorters 250 is a controller 104
It is connected to the. Further, as described above, the operation unit 600 includes the touch panel 703, the LCD 71,
02 and the like, and are connected to the controller 1004.

FIG. 5 to FIG. 9 show examples of control processing programs of the controller 1004 of the image forming apparatus according to the present invention.

FIG. 5 shows a program for a process of setting the charging time for the storage battery 1200. In this process, first, in step S501, the user mode key 60
It is determined whether or not No. 9 is set to the night charge mode.
As a result of the determination in step S501, the user mode key 6
If 09 is set to the night charge mode, the set time at night (for example, from 20:00 to 8:00) is set as the charge time stored in the RAM 1004c of the controller 1004 (step S502), and the process ends. If the user mode key 609 is not set to the night charge mode, a user-set time input from the numeric keypad 604 at the charge time, for example, 20 as the charge start time
Hour, 8:00 is set as the charging end time (step S
503) This process ends.

FIG. 6 shows a program for the charge control process (1) for the storage battery 1200. In this process, first, in step S511, the current time is input by the timer IC 308, and in step S512, it is determined whether or not the current time is within the charging time range set in the process of FIG. As a result of the determination in step S512, when it is determined that the current time is within the charging time range, the storage battery 1200 is charged by turning on the switch 1201 (step S513). If not, the input power to the storage battery 1200 is shut off by turning off the switch 1201 (step S51).
4), end this processing.

According to this process, the current time input by the timer IC 308 is within the range of the charging time set in the process of FIG. 5, that is, the night set time in the case of the night charging mode, and the user is set otherwise. Storage battery 12 at set time
00 can be charged, and by optimizing the charging timing of the storage battery 1200, the predetermined rated power of the copying machine can be effectively used.

FIG. 7 shows a program for the charge control process (2) for the storage battery 1200. In this processing, first,
In step S521, a current detection signal from the current detection unit 1203 is input via the A / D converter 301, and in step S522, it is determined whether the current detection signal is equal to or less than a predetermined value. If the result of determination in step S522 is that the current detection signal is less than or equal to the predetermined value, the switch 120
1 is turned on to charge the storage battery 1200 (step S523). On the other hand, when the current value is not lower than the predetermined value, the switch 1201 is turned off to cut off the input power to the storage battery 1200 (step S52).
4), end this processing. The predetermined value in this process is a current value when the power supplied to the image forming apparatus has a margin enough to charge the storage battery, and is, for example, 8A.

According to the present processing, when the current detection signal from current detection section 1203 is equal to or smaller than the predetermined value and large power is not supplied to the predetermined load of the copying machine, storage battery 1200 is operated.
, And by optimizing the charging timing of the storage battery 1200, the predetermined rated power of the copying machine can be effectively used.

FIG. 8 shows a program of the charge control process (3) for the storage battery 1200. In this processing, first,
In step S531, the main switch detection signal from the MSB detection unit 1204 is input, and in step S532, it is determined whether the main switch 1001 is in the off state. As a result of the determination in step S532, the main switch 1001
Is off, the storage battery 1200 is charged by turning on the switch 1201 (step S53).
3) While ending this processing, if the switch is not in the off state, the switch 1201 is turned off to cut off the input power to the storage battery 1200 (step S534), and this processing ends.

According to this processing, the main switch 1001
The storage battery 1200 can be charged when the battery is in the off state, and by optimizing the charging timing of the storage battery 1200, the predetermined rated power of the copying machine can be effectively used.

FIG. 9 shows a program for controlling the switching of the electric power supplied to the fixing heater. In this processing, first, in step S541, a current detection signal from the current detection unit 1203 is input via the A / D 301, and
At 542, it is determined whether the current detection signal is equal to or greater than a predetermined value. If the result of determination in step S542 is that the current detection signal is greater than or equal to the predetermined value, the switch 1202
Is switched from the commercial power supply side to the storage battery side, the supply of power to the plurality of fixing heaters 310 is switched over to the storage battery side (step S543), and this process ends. When the power supply of the fixing heater 310 is switched, at least one of the plurality of fixing heaters 310 may be switched to the storage battery side, and the rest may be kept at the commercial power supply.

If the result of determination in step S542 is that the current detection signal is smaller than the predetermined value, power is supplied from the commercial power supply directly to the plurality of fixing heaters 310 by switching the switch 1202 to the commercial power supply (step S542). S5
44) This process ends. The predetermined value in the present process is a current value when the power supplied to the image forming apparatus is not large enough to supply the fixing heater, and is, for example, 8A.

According to this processing, when the current detection signal from the current detection unit 1203 is equal to or more than the predetermined value and a large power is supplied to the predetermined load of the copying machine, the fixing heater 31
By switching the supply of power to the storage battery, a voltage drop of power to a predetermined load can be avoided.

[0064]

As described above in detail, according to the power supply control apparatus for an image forming apparatus according to the first aspect and the power supply control method for an image forming apparatus according to the ninth aspect, a method according to a recognized time is performed. In this way, the storage battery can be charged, and a predetermined rated power of the image forming apparatus can be effectively used by optimizing the charging timing of the storage battery.

According to the control device for controlling the power supply of the image forming apparatus according to the second aspect and the control method of the power supply for the image forming apparatus according to the tenth aspect, the storage battery is charged when the recognized time is a predetermined time at night. The predetermined rated power of the image forming apparatus can be effectively used by optimizing the charging timing of the storage battery.

According to the control apparatus for controlling the power supply of the image forming apparatus according to the third aspect and the method for controlling the power supply of the image forming apparatus according to the eleventh aspect, the recognized time is set within a predetermined time set by the user in advance. The storage battery can be charged at a certain time, and a predetermined rated power of the image forming apparatus can be effectively used by optimizing the charging timing of the storage battery.

According to the control apparatus for controlling the power supply of the image forming apparatus according to the fourth aspect and the control method of the power supply for the image forming apparatus according to the twelfth aspect, the storage battery is charged in accordance with the recognized power supply amount of the commercial power supply. The predetermined rated power of the image forming apparatus can be effectively used by optimizing the charging timing of the storage battery.

According to the control apparatus for controlling the power supply of the image forming apparatus according to the fifth aspect and the method for controlling the power supply of the image forming apparatus according to the thirteenth aspect, the recognized power supply amount of the commercial power supply is equal to or less than a predetermined value. The storage battery can be charged when a large power is not supplied to a predetermined load of the image forming apparatus,
By optimizing the charging timing of the storage battery, the predetermined rated power of the image forming apparatus can be effectively used.

According to the control device for controlling the power supply of the image forming apparatus according to the sixth aspect and the method for controlling the power supply of the image forming apparatus according to the fourteenth aspect, the storage battery can be charged with the power switch of the commercial power supply turned off. By optimizing the charging timing of the storage battery, the predetermined rated power of the copying machine can be effectively used.

According to the control apparatus for controlling the power supply of the image forming apparatus and the method for controlling the power supply of the image forming apparatus according to the present invention, when the recognized supply amount of the commercial power supply is not less than the predetermined value, By switching the power supply to the fixing heater to the storage battery side when a large power is being supplied to the predetermined load of the forming apparatus, a voltage drop of the power to the predetermined load can be avoided.

[Brief description of the drawings]

FIG. 1 is a first diagram illustrating a power supply control device of an image forming apparatus according to the present invention.
It is a schematic structure figure of an embodiment.

FIG. 2 is an explanatory diagram of an arrangement of an operation unit 600 provided in a main body 100.

FIG. 3 is an explanatory diagram of a display of a message display 700 and an arrangement of keys.

FIG. 4 is a block diagram illustrating a configuration of a control device of the power supply of the image forming apparatus according to the present invention.

FIG. 5 is a flowchart of a program for a process of setting a charging time for a storage battery 1200.

FIG. 6 is a flowchart of a program of a charging control process (1) for a storage battery 1200.

FIG. 7 is a flowchart of a program of a charging control process (2) for the storage battery 1200.

FIG. 8 is a flowchart of a program for a charge control process (3) for the storage battery 1200.

FIG. 9 is a flowchart of a program for a switching control process of electric power supplied to a fixing heater.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 copier main body 200 circulating automatic document feeder 310 fixing heater (heating means) 311 input power plug (commercial power supply) 600 operation unit 700 message display 1004 controller (control means) 1200 storage battery 1203 current detection unit (commercial power supply state) Recognition unit) 1204 MSB detection unit (power switch state recognition unit) 1210 Timer IC (time recognition unit)

Claims (16)

[Claims] A time recognition unit for recognizing a time in a power supply control device of an image forming apparatus that uses a commercial power supply and a power supply from a storage battery charged by the commercial power supply;
A control unit for controlling charging of the storage battery by the commercial power supply in accordance with the time recognized by the time recognition unit. 2. The storage unit according to claim 1, wherein the control unit charges the storage battery with the commercial power supply when the time recognized by the time recognition unit is within a predetermined time at night. Control device for the power supply of the image forming apparatus. 3. The control means charges the storage battery with the commercial power supply when the time recognized by the time recognition means is within a predetermined time set in advance by a user. A control device for a power supply of the image forming apparatus according to claim 1. 4. A control device for a power supply of an image forming apparatus, which uses a commercial power supply and a power supply from a storage battery charged by the commercial power supply, recognizes a supply amount of the commercial power supply to the image forming apparatus. Commercial power supply state recognizing means, and control means for controlling charging of the storage battery by the commercial power supply according to the supply amount of the commercial power to the image device recognized by the commercial power supply state recognizing means. A power supply control device for an image forming apparatus, comprising: 5. The commercial power supply to the storage battery when the commercial power supply amount to the image forming apparatus, which is recognized by the commercial power supply state recognition unit, is equal to or less than a predetermined value. 5. The control device for a power supply of an image forming apparatus according to claim 4, wherein charging is performed. 6. The commercial power supply state recognizing means includes a power switch state recognizing means for recognizing a state of a power switch of the commercial power supply, and the control means comprises: 6. The power supply control device for an image forming apparatus according to claim 4, wherein the storage battery is charged according to the following. 7. The power supply to the predetermined load by the storage battery when the supply amount of the commercial power supply to the image forming apparatus recognized by the commercial power supply state recognition unit is equal to or more than a predetermined value. The power supply control device for an image forming apparatus according to claim 4, wherein: 8. The image forming apparatus includes a fixing device incorporating a plurality of heating units, and the control unit supplies power to at least one of the plurality of heating units from the storage battery. The power supply control device for an image forming apparatus according to any one of claims 1 to 7, wherein: 9. A method for controlling a power supply of an image forming apparatus using a commercial power supply and a power supply from a storage battery charged by the commercial power supply, a time recognition step of recognizing a time;
Controlling the charging of the storage battery by the commercial power supply according to the time recognized in the time recognition step. 10. The control step of charging the storage battery by the commercial power supply when the time recognized in the time recognition step is during a predetermined time at night. Of controlling the power supply of the image forming apparatus. 11. The method according to claim 11, wherein in the control step, the storage battery is charged by the commercial power supply when the time recognized in the time recognition step is within a predetermined time set in advance by a user. The method for controlling a power supply of an image forming apparatus according to claim 9. 12. A method of controlling a power supply of an image forming apparatus using a commercial power supply and a power supply from a storage battery charged by the commercial power supply, the method comprising recognizing a supply amount of the commercial power supply to the image forming apparatus. And a control step of controlling charging of the storage battery by the commercial power supply in accordance with the supply amount of the commercial power supply to the image device recognized by the commercial power supply state recognition means. A method for controlling a power supply of an image forming apparatus, the method comprising: 13. In the control step, when the amount of power of the commercial power supply to the image forming apparatus recognized in the commercial power supply state recognition step is equal to or less than a predetermined value, the commercial power supply to the storage battery is performed. 13. The method according to claim 12, wherein the charging is performed. 14. The commercial power supply state recognizing step includes a power switch state recognizing step of recognizing a state of a power switch of the commercial power supply. In the control step, the commercial power supply is turned off when the power switch is off. 14. The method of controlling a power supply of an image forming apparatus according to claim 12, wherein the storage battery is charged according to: 15. In the control step, when a supply amount of the commercial power supply to the image forming apparatus, which is recognized in the commercial power supply state recognition step, is equal to or more than a predetermined value, the storage battery supplies power to a predetermined load. The method of controlling a power supply of an image forming apparatus according to any one of claims 12 to 14, wherein the power supply is supplied. 16. The image forming apparatus includes a fixing device incorporating a plurality of heating units, and in the control step, supplying power from the storage battery to at least one of the plurality of heating units. The method of controlling a power supply of an image forming apparatus according to any one of claims 9 to 15, wherein: