CN106549585B - Power supply device and image forming apparatus - Google Patents
Power supply device and image forming apparatus Download PDFInfo
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- CN106549585B CN106549585B CN201510591978.4A CN201510591978A CN106549585B CN 106549585 B CN106549585 B CN 106549585B CN 201510591978 A CN201510591978 A CN 201510591978A CN 106549585 B CN106549585 B CN 106549585B
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Abstract
The present invention relates to power supply device and image forming apparatuses can take into account the shortening of the preheating time of fixation unit etc. and the inhibition for dash current according to the judging result for whether being stored with being not carried out for task in storage unit come the starting current of switching motor.Alternating current is converted to DC current by the power supply device, is had: main body；Right door is capable of forming to open posture and closed posture；Input part is used to receive alternating current；Rectification circuit, the alternating current received input part rectify；Output block will be supplied using the alternating current after rectifier circuit rectifies to load；Detection unit detects the unlatching posture and closed posture of right door；Storage unit stores task needed for driving load；And control unit, when detecting the closed posture of right door using detection unit, control unit Starting mode of switching electric current according to the presence or absence of task.
Description
Technical field
The present invention relates to power supply device and image forming apparatuses, fill more particularly to the power supply for being able to suppress dash current
It sets and image forming apparatus.
Background technique
In the past, it is known that image forming apparatus (such as printer, this specification in be mainly illustrated by taking printer as an example)
Has the door (such as right door, front door etc.) of opening and closing freely.In general, when user or maintenance personnel be intended to failure (such as paper jam) into
Need to open right door when the components such as row maintenance or replacement fixation unit, when user or maintenance personnel's developing apparatus to be replaced
Or it needs to open front door when the components such as photosensitive drums.In this specification, mainly it is illustrated by taking the opening and closing of right door as an example.
In order to ensure personal safety needs cutting needle to setting in the case where user or maintenance personnel open right door
The supply of the electric power of motor near the right door of printer, so that motor stopping is acted.So far, the prior art
In this purpose is realized to the supply voltage of the 24v of motor supply by directly cutting off.
If the upkeep operation of failure or the replacement operation of component finish, in order to restore normally to operate, need right door
It closes and restarts motor.In the moment of motor restarting, it will usually generate dash current.
Fig. 1 is to show the situation that current value changes with the unlatching of right door, the migration of closed state by taking right door as an example
Figure, as shown in the drawing, due to having cut off electric power when the purpose for trouble hunting or part replacement opens right door
Supply, therefore current value remains zero.Also, when trouble hunting or the operation of part replacement finish and close right door,
Current value suddenly rises to peak value in moment, then falls after rise in a relatively short period of time stable to maintaining printer to run well
Current value.
In fact, above-mentioned peak value is the size of dash current.However, the size for the dash current addressed in this specification
It is mainly measured by the difference between above-mentioned peak value and stabling current value (current value when normal operation), therefore, only
It not to state in advance, the dash current in this specification means the difference of above-mentioned peak value and stabling current value.
Also, the dash current is bigger, bigger to adverse effect caused by electrical component, leads to its durability deterioration,
Reduced service life.In addition, meaningless consumption of the dash current also with electric power resource is closely bound up, and in other words, impact electricity
Stream is bigger, and the waste of electric power resource is more serious.
Therefore, the demand of the dash current is inhibited to come into being.For example, proposing there is following technical side in patent document 1,2
Case: when the right door of open printing machine, the supply voltage of above-mentioned 24v being cut off, if trouble hunting operation or part replacement are made
Industry finishes, and when closing right door, gently input is used for the electric current of drive motor.
Fig. 2 is equally to show current value the opening with right door in technology involved in patent document 1,2 by taking right door as an example
It opens, the migration of closed state and the figure of situation changed.After being compared with Fig. 1 it is found that taking Retraining Measures to Fig. 2
Patent document 1,2 in dash current decrease, so that adverse effect caused by due to dash current is excessive can obtain
Inhibit.
Additionally, it is well known that printer belongs to the task management system for being lined up type of waiting in turn, the task execution issued by user
Instruction is stored in the storage unit of printer according to the sequencing of time, and, it then follows arrive first the principle first carried out and to appointing
Business is handled.Although needing to make tasks interrupt when carrying out trouble hunting or replacement component because of failures such as paper jams,
If this task does not complete, the instruction for being used to indicate the executing unfinished portion of the task is still stored in printer.Moreover, not
It manages whether this task is completed, all there is a possibility that relevant instruction of subsequent other tasks is still stored in printer.
Therefore, when user closes right door, if there is also unfinished task or subsequent other tasks, then,
Dash current can still be inhibited using the technological means in patent document 1,2.
However, if unfinished task or subsequent other tasks have been not present when user closes right door, that
, just without considering the factors such as the shortening of preheating time of fixation unit etc., inhibit as far as possible because dash current is excessive to electrical member
The waste of adverse effect and electric power caused by part then becomes primary and foremost purpose.In this case, it is not completed in spite of presence
Task and subsequent other tasks all take the patent document 1,2 of the same countermeasure for inhibiting dash current obviously out of style
Preferably.That is, being there is also in the case where unfinished task or subsequent other tasks when user closes right door
The shortening etc. for taking into account the preheating time of fixation unit etc., by inhibition of the technological means to dash current of patent document 1,2
Degree can still receive.But unfinished task or subsequent other tasks are not present when user closes right door
In the case where, insufficient is then shown slightly to the inhibition level of dash current by the technological means of patent document 1,2, thus to electrical member
Adverse effect caused by part is still excessively serious, moreover, also will cause the significant wastage of electric power at this time.
Patent document 1: Japanese Unexamined Patent Publication 2000-197265 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2008-51132 bulletin
Summary of the invention
The present invention is completed in view of situation as above, controls motor its purpose is to provide equal according to the presence or absence of task
The power supply device and image forming apparatus of Starting mode.
In order to solve the above problems, an embodiment of the invention provides a kind of power supply device, which will hand over
Galvanic electricity circulation is changed to DC current, which is characterized in that has: power supply；Cover is capable of forming to open posture and closing appearance
Gesture exposes the inside of the power supply device when being formed as and opening posture, when being formed as closed posture by the power supply
The inside of device is separated with outside；1 sidepiece part, is used to receive the alternating current；Rectification circuit, to 1 side
The alternating current that component receives is rectified；2 sidepiece parts, by using the alternating current after the rectifier circuit rectifies to negative
Carry supply；Detection unit detects the unlatching posture and closed posture of the cover；Storage unit, it is described negative to driving
Task needed for carrying is stored；And control unit, when being judged as that the cover is switched to closed posture from unlatching posture, the control
Portion processed Starting mode of switching electric current according to the presence or absence of described task.
It according to above-mentioned power supply device, can be controlled according to the presence or absence of task and to dash current, so as to inhibit
Because dash current is damaging caused by electrical component, durability, the service life of electrical component are improved.It can also enough corresponding
Save electric power in ground.
In above-mentioned power supply device, it is preferable that when detecting the closed posture of the cover using the detection unit,
In the case where being stored with the task in the storage unit, the control unit is executed makes electric current reach the first electricity with first time period
First starting of flow valuve, not stored in the case where have the task in the storage unit, the control unit does not execute electric current
Starting, wherein first current value is the specified value for capableing of normal driving load.
According to above-mentioned power supply device, when the task of being not present, without execute it is extra restart, therefore impact will not be generated
Electric current, to eliminate the damage caused by electrical component due to dash current, additionally it is possible to greatly inhibit the waste of electric power.
In above-mentioned power supply device, it is preferable that when detecting the closed posture of the cover using the detection unit,
In the case where being stored with the task in the storage unit, the control unit is executed makes electric current reach the first electricity with first time period
First starting of flow valuve, it is not stored in the case where have the task in the storage unit, when the control unit is executed with second
Between section make electric current reach the first current value second starting, the second time period is than the first time segment length.
According to above-mentioned power supply device, when in storage unit it is not stored have task when, dash current is able to suppress, so as to subtract
Weak damage and the waste of electric power caused by electrical component due to dash current, in addition it is possible to restart in order to subsequent
Print out task and carry out appropriate preparation in advance.
In above-mentioned power supply device, it is preferable that it is not stored in the case where have the task in the storage unit, it holds first
Row second starting is switched to first starting when generating new task in the implementation procedure in second starting
Start speed.
According to above-mentioned power supply device, dash current can either be inhibited, and can start to be printed and improve production as early as possible
Rate.
In above-mentioned power supply device, it is preferable that in the case where being stored with the task in the storage unit, be first carried out
First starting is switched to the starting speed of second starting when task disappears in the implementation procedure in first starting
Degree.
According to above-mentioned power supply device, for example, after it will cover closing, first it is detected that task is stored in storage unit, because
This executes the first starting.If user cancels task during execution first starts, from the starting speed of the first starting
It is switched to the starting speed of the second starting, thus, it is possible to inhibit dash current.
In above-mentioned power supply device, it is preferable that the control unit plays first starting according to the situation of task
Dynamic speed, that is, first time period changes.Wherein, the task refers to the tasks such as printing, scanning, fax.The shape of the task
What condition referred to task receives progress, the number of task amount.The task amount refers to the total quantity or all tasks of the task
Total time required for completing.
According to above-mentioned power supply device, for example, starting speed is adjusted in the case where receiving task, with
So that current value reaches the first current value at the time of the receiving of task finishes just.In addition, in the case where task amount is more,
Starting speed is adjusted to faster speed and is promptly started.On the other hand, in the case where task amount is less, by starting speed
Degree is adjusted to slower speed and slowly starts.Starting speed is adjusted according to the situation of task as a result, to can inhibit
Dash current, and working efficiency can be improved.
In above-mentioned power supply device, it is preferable that in the case where the cover is formed as opening posture, the control unit will be electric
Flow control is made as first current value the second current value below, will control signal cut.
According to above-mentioned power supply device, the dash current when cover is formed as closed posture can be further suppressed.
In above-mentioned power supply device, it is preferable that the load is when forming image on paper for conveying the paper
Conveying roller.
Other embodiments of the present invention provide a kind of image forming apparatus, which is used for the shape on paper
At image, described image, which forms device, to be had: power supply；Cover, is capable of forming to open posture and closed posture, when being formed as
The inside for making described image form device when opening posture is exposed, will be in described image formation when being formed as closed posture
Portion is separated with outside；1 sidepiece part, is used to receive the alternating current；Rectification circuit receives 1 sidepiece part
Alternating current rectified；2 sidepiece parts will be supplied using the alternating current after the rectifier circuit rectifies to load；
Detection unit detects the unlatching posture and closed posture of the cover；Storage unit, to needed for the driving load
Task is stored；And control unit, when be judged as it is described cover from open posture be switched to closed posture when, the control unit according to
The presence or absence of described task and the Starting mode of switching electric current.
According to above-mentioned image forming apparatus, it is able to suppress dash current, so as to weaken caused by electrical component not
Good influence, and can reduce the waste of electric power.
Detailed description of the invention
Fig. 1 is the unlatching shown the current value in the prior art (dash current Retraining Measures are not carried out) with right door, pass
The migration of closed state and the figure of situation changed.
Fig. 2 is the unlatching shown the current value in the prior art (implementing dash current Retraining Measures) with right door, pass
The migration of closed state and the figure of situation changed.
Fig. 3 is task ranking relationship and the processing sequence shown in the case where being stored with print out task etc. in printer
Schematic diagram.
Fig. 4 is the integrally-built block diagram for schematically showing image forming apparatus according to the present invention.
Fig. 5 is the circuit diagram for schematically showing circuit structure of the invention.
Fig. 6 is to show there are subsequent task, current value involved in embodiments of the present invention with
The unlatching of right door, the migration of closed state and the figure of situation changed.
Fig. 7 is to show there is no subsequent task, current value involved in embodiments of the present invention with
The unlatching of right door, the migration of closed state and the figure of situation changed.
Fig. 8 be show originally there is no subsequent task but behind inserted with new task in the case where, reality of the invention
Apply the figure for the situation that current value involved in mode changes with the unlatching of right door, the migration of closed state.
Fig. 9 is the flow chart for showing control flow of the invention.
Specific embodiment
Hereinafter, the preferred embodiment of the present invention is described in detail based on attached drawing.In addition, for those skilled in the art
For member, it can be realized their a variety of alternatives under the enlightenment of these embodiments, the present invention is not limited thereto, and place is said
Bright preferred embodiment.
Fig. 1 is the unlatching shown the current value in the prior art (dash current Retraining Measures are not carried out) with right door, pass
The migration of closed state and the figure of situation changed.As previously mentioned, having cut off the supply of electric power when right door is opened, therefore current value
Remain zero.When closing right door, current value suddenly rises to peak value in moment, then falls after rise in a relatively short period of time to dimension
Hold the stable current value of printer normal operation.The peak value of above-mentioned electric current and the difference of stationary value are bigger, that is, dash current is got over
Greatly, bigger to adverse effect caused by electrical component, lead to its durability deterioration, reduced service life.Moreover, dash current
Bigger, the waste of electric power resource is more serious.
Therefore, it is desirable to inhibit the dash current.Fig. 2 is shown in the prior art (implementing dash current Retraining Measures)
The figure for the situation that current value changes with the unlatching of right door, the migration of closed state.As shown in Fig. 2, taking Retraining Measures
Dash current afterwards decreases, so that adverse effect caused by due to dash current is excessive can be inhibited.
As previously mentioned, printer belongs to the task management system for being lined up type of waiting in turn.Fig. 3 is to show to be stored in printer to beat
The schematic diagram of task ranking relationship and processing sequence in the case where print task dispatching.As shown in the drawing, different user A, B, C
The instruction for executing different task A, B, C is had issued to printer respectively, from the point of view of the sending time of instruction, task A is earlier than appointing
Be engaged in B, and task B is earlier than task C.In the storage unit of printer, these tasks are stored according to the sequencing of time.When
When execution task, according to the principle of first in first out, exports and execute these tasks.
In addition, there is randomness in the failure of printer, that is to say, that the time of origin of failure is not known simultaneously.Example
Such as, it if failure has occurred when task A is finished, needs to continue to execute task B, C after fault clearance.If in office
Failure has occurred in the midway that business C is executed, then needs to continue to execute remaining task C after fault clearance.No matter above-mentioned
In the case of which kind of, according to technological means involved in Fig. 2, it can inhibit dash current to a certain extent.
However, finished by taking Fig. 3 as an example if task A, B, C is processed in the event of a failure, then, when closing right door
It not only needs to consider to inhibit as far as possible because dash current is adverse effect caused by electrical component, it is also necessary to consider to inhibit the wave of electric power
Take.Due to all being taken together in patent document 1,2 not tape/tube printer with the presence or absence of unfinished task and subsequent other tasks
The countermeasure of the inhibition dash current of sample, thus, it is obviously outdated in this case.
In order to solve the above problems, the present invention is proposed.Fig. 4 is to schematically show image according to the present invention to be formed
The integrally-built block diagram of device.As shown in the drawing, image forming apparatus according to the present invention generally has main body (frame
Deng), it is scanner section, storage unit, image forming part, sensor (detection unit), delivery section, control unit, sheet feed section, display unit, outer
Portion I/F (network interface), interlocking switch, electrical storage device, main switch, load (roller etc.).As for each component itself detailed configuration,
And configuration relation, the connection relationship etc. of each component to each other, herein without repeating.
Main body is mechanical mechanism (frame etc.) and electronic equipment etc. in the shell of image forming apparatus.Scanner section is to original
Original text is scanned, control unit by after scanning image data and the storage of other task to storage unit.Image forming part carries out
Colored or monochrome image is formed.4 groups of image forming parts are the image forming parts to form the image of yellow (Y), form magenta
(M) image forming part of image, the image forming part of the image of formation cyan (C) and the image for forming black (K) image
Forming portion.Sensor detects the open and-shut mode of right door.Delivery section carries out the paper of sheet feed section via multiple rollers defeated
It send.In order to inhibit dash current, control unit controls current value.Display unit shows the progress of task, dash current
Information when starting (for example, current value) and the setting of printing etc..Exterior I/F is used to image forming apparatus being connected to net
Network can receive image data and other tasks.Interlocking switch is located near right door, and the linkage of the opening and closing with right door
Open and-shut mode is switched over.Therefore, interlocking switch also can replace sensor and detect to the open and-shut mode of right door.It stores
Electric installation is used to supply electric current to load when opening right door.
In addition, alternating current is converted to DC current by power supply device according to the present invention, have: power supply；Right door (phase
When in cover), it is capable of forming to open posture and closed posture, the inside of power supply device is made when being formed as and opening posture
Expose, separates the inside of power supply device with outside when being formed as closed posture；Input part (is equivalent to 1 sidepiece part),
It is used to receive alternating current；Rectification circuit rectifies the alternating current received via input part；Output block
(being equivalent to 2 sidepiece parts) will be supplied using the alternating current after rectifier circuit rectifies to load；Detection unit, to the right side
The unlatching posture and closed posture of door are detected；Storage unit stores task needed for driving load；And control
Portion, when be judged as right door from when opening posture and being switched to closed posture, the control unit switching electric current according to the presence or absence of task
Starting mode.According to the power supply device, can be controlled according to the presence or absence of task and to dash current, so as to inhibit because
Dash current is damaged caused by electrical component, improves durability, the service life of electrical component.It can also enough correspondingly
Save electric power.
Fig. 5 is the circuit diagram for schematically showing circuit structure of the invention.As shown in the drawing, AC power source, main switch,
1 sidepiece part, 2 sidepiece parts, interlocking switch, electrical storage device, load are sequentially connected in series in order.Wherein, in 1 sidepiece part
Rectification circuit is formed between 2 sidepiece parts.
Hereinafter, being illustrated referring to Fig. 6~9 pair control mode of the invention.As shown in fig. 6, if being overhauled to failure
Or replacement component, then right door is opened, cut off makes the input current of motor during this period to the electric current of motor supply at this time
Remain zero.When trouble hunting or the operation of replacement component finish, right door is closed.At this point, can using detection unit
It detects the closed posture of right door, in turn, judges whether be stored with task in storage unit by control unit, stored in storage unit
In the case where having task A, B or C, which makes electric current reach 1.5A (printing in stipulated time section (first time period)
Operating current when machine runs well), in other words, made with prespecified speed (the starting speed of the first starting) to printer
The electric current of input reaches 1.5A.
In addition, control unit is providing electric current as shown in fig. 7, not stored in the case where have the task in storage unit
Reach 1.5A in period (second time period), in other words, is made pair with prespecified speed (the starting speed of the second starting)
The electric current of printer input reaches 1.5A.Alternatively, the control unit can not execute the starting of electric current, that is, not input current.Its
In, 1.5A is the specified value for capableing of normal driving load obtained by experiment etc..Also, the second time period is greater than institute
State first time period.
In above-mentioned power supply device, when there are remaining task A, B or C, according to previous inhibition dash current
Mode carrys out starting current, so as to inhibit dash current.When the task of being not present, electric current is made to slowly reach specified value, by
This is able to suppress dash current, and then can weaken the damage caused by electrical component due to dash current, but also can press down
The waste of electric power processed, and appropriate preparation can be carried out in advance for the subsequent print job restarted.Alternatively, ought not
There are when task, not input current, without execute it is extra restart, therefore dash current will not be generated, to eliminate
Damage and the waste of electric power caused by electrical component because of the dash current due to.
In addition, being cut off at this time to horse as shown in figure 8, open right door if component is overhauled or replaced to failure
Up to the electric current of supply, during this period, the input current of motor is made to remain zero.When trouble hunting or the operation for replacing component are complete
Bi Shi closes right door.At this point, being capable of detecting when the closed posture of right door using detection unit, in turn, judge by control unit
Whether it is stored with task in storage unit, not stored in the case where have task in storage unit, which makes electric current at second
Between reach 1.5A (with the starting speed of the second starting) in section.If in the midway for executing the Starting mode inserted with new task,
Then it is switched to the Starting mode for making electric current reach 1.5A (with the starting speed of the first starting) in first time period.In this way, both
It is able to suppress dash current, and can start to be printed and improve productivity as early as possible.
Fig. 9 is the flow chart for showing control flow of the invention.As shown in the drawing, firstly, whether control unit judges right door
Be formed as opening posture (step S01), if result is "Yes", enter step S02, on the contrary, continuing to sentence if result is "No"
Whether the right door that breaks is formed as opening posture.
In step S02, control unit judges whether right door is formed as closed posture, if result is "Yes", enters step
S03, on the contrary, continuing to judge whether right door is formed as closed posture if result is "No".
In step S03, control unit judges to enter step with the presence or absence of task if result is "Yes" in storage unit
S04 executes the first starting, on the contrary, entering step S14 if result is "No", executes the second starting.
During execution first starts (step S04), determine whether to be transformed to no task (task cancellation) in real time
State (step S05).That is, automatically entering step S05 while entering step S04.If the result of step S05 is
"Yes" then enters step S06, the second starting of execution is switched to, on the contrary, entering step if the result of step S05 is "No"
S07, judges whether the first starting terminates.
Step S08 is automatically entered while entering step S06, judges starting (including the first starting and second starting)
Whether complete, if the result of step S08 is "Yes", terminate movement, on the contrary, continuing if the result of step S08 is "No"
Judge whether starting is completed.
In addition, S08 is entered step, and execute movement ibid, on the contrary, if step if the result of step S07 is "Yes"
The result of S07 is "No", then returns to step S05.
On the other hand, during execution second starts (step S14), determine whether to be transformed to task in real time and (insert
Enter to have new task) state (step S15).That is, automatically entering step S15 while entering step S14.If step
The result of rapid S15 is "Yes", then enters step S16, the first starting of execution is switched to, on the contrary, if the result of step S15 is
"No" then enters step S17, judges whether the second starting terminates.
Step S08 is automatically entered while entering step S16, judges starting (including the first starting and second starting)
Whether complete, if the result of step S08 is "Yes", terminate movement, on the contrary, continuing if the result of step S08 is "No"
Judge whether starting is completed.
In addition, S08 is entered step, and execute movement ibid, on the contrary, if step if the result of step S17 is "Yes"
The result of S17 is "No", then returns to step S15.
As described above, in the above-described embodiment, having enumerated following example: when closing right door, if being originally judged as
There is no print out task, then the input current supplied to motor is made to reach rule with the starting speed (second time period) of the second starting
Definite value, if making input current with first inserted with new task (printing, scanning, fax etc.) in the midway of the Starting mode
The starting speed (first time period) of starting reaches specified value.But vice versa, that is, when closing right door, if originally sentencing
Break as there are print out task, then reaches the input current supplied to motor with the starting speed (first time period) of the first starting
Specified value makes input current with the starting speed (second of the second starting if eliminating the task in the midway of the Starting mode
Period) reach specified value.In this way, dash current can be inhibited, weaken because dash current is damaging caused by electrical component, again
The consumption that electric power can correspondingly be inhibited, realizes the effect of economize on electricity.
In addition, can according to task receive progress, task amount number and to the first time period carry out it is appropriate
Change.It can inhibit dash current as a result, and improve working efficiency.
In addition, in the above-described embodiment, when opening the right door, control unit cuts off input current, makes its guarantor
Hold is zero.But it is also possible to be the first electric current the second electric current below by input current control, as long as second electric current can be true
Signal cut will be controlled by protecting.In such manner, it is possible to further suppress dash current when right door is formed as closed posture, weaken because
Dash current is damaged caused by electrical component.
In addition, in the above-described embodiment, the load is when forming image on paper for conveying the defeated of the paper
Send roller.But the load is also possible to other components, such as can be pickup roller etc..
In addition, image forming apparatus according to the present invention can in the same manner as above-mentioned power supply device having according to task
The electric current inputted to motor is controlled without equal, therefore, image forming apparatus of the invention is equally able to suppress dash current, weakens
The adverse effect caused by electrical component, and can also correspondingly inhibit the waste of electric power, realize power savings.
Although preferred embodiments of the present invention have been disclosed for illustrative above, the present invention is not limited to these embodiments.?
In the range of not departing from purport of the invention, it is able to carry out addition, omission, displacement and other changes of structure.The present invention is simultaneously
It is not limited to explanation above-mentioned, protection scope is limited by technical solution described in the claims.
Claims (6)
1. a kind of power supply device, which is converted to DC current for alternating current, which is characterized in that has:
Power supply；
Cover is capable of forming to open posture and closed posture, makes the power supply device when being formed as and opening posture
Inside is exposed, and separates the inside of the power supply device with outside when being formed as closed posture；
1 sidepiece part, is used to receive the alternating current；
Rectification circuit, the alternating current received 1 sidepiece part rectify；
2 sidepiece parts will be supplied using the alternating current after the rectifier circuit rectifies to load；
Detection unit detects the unlatching posture and closed posture of the cover；
Storage unit stores task needed for driving the load；And
Control unit, when being judged as that the cover is switched to closed posture from unlatching posture, which has according to the task
Without and the Starting mode of switching electric current,
When detecting the closed posture of the cover using the detection unit, the task is stored in the storage unit
In the case of, the control unit executes the first starting for making electric current reach the first current value with first time period, in the storage unit
In it is not stored have the task in the case where, the control unit is executed makes electric current reach the of the first current value with second time period
Two startings, the second time period is than the first time segment length.
2. power supply device according to claim 1, which is characterized in that
It is not stored in the storage unit that second starting is first carried out in the case where have the task, when second opening at this
When generating new task in dynamic implementation procedure, it is switched to the starting speed of first starting.
3. power supply device according to claim 1 or 2, which is characterized in that
In the case where being stored with the task in the storage unit, first starting is first carried out, when in first starting
Implementation procedure in task disappear when, be switched to it is described second starting starting speed.
4. power supply device according to claim 1 or 2, which is characterized in that
In the case where the cover is formed as opening posture, current control is that first current value is below by the control unit
Second current value will control signal cut.
5. power supply device according to claim 1 or 2, which is characterized in that
The load is when forming image on paper for conveying the conveying roller of the paper.
6. a kind of image forming apparatus is used to form image on paper,
Described image forms device and is characterized in that having:
Power supply；
Cover is capable of forming to open posture and closed posture, described image is made to form dress when being formed as and opening posture
The inside set is exposed, and separates the inside that described image is formed with outside when being formed as closed posture；
1 sidepiece part, is used to receive alternating current；
Rectification circuit, the alternating current received 1 sidepiece part rectify；
2 sidepiece parts will be supplied using the alternating current after the rectifier circuit rectifies to load；
Detection unit detects the unlatching posture and closed posture of the cover；
Storage unit stores task needed for driving the load；And
Control unit, when being judged as that the cover is switched to closed posture from unlatching posture, which has according to the task
Without and the Starting mode of switching electric current,
When detecting the closed posture of the cover using the detection unit, the task is stored in the storage unit
In the case of, the control unit executes the first starting for making electric current reach the first current value with first time period, in the storage unit
In it is not stored have the task in the case where, the control unit is executed makes electric current reach the of the first current value with second time period
Two startings, the second time period is than the first time segment length.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480820A (en) * | 2002-07-03 | 2004-03-10 | 佳能株式会社 | Image forming device and its power control method |
| CN1497411A (en) * | 2002-10-08 | 2004-05-19 | 佳能株式会社 | Image forming device having low power consumption mode and its control method |
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| JP4009956B2 (en) * | 2003-06-24 | 2007-11-21 | 村田機械株式会社 | Image forming apparatus |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1480820A (en) * | 2002-07-03 | 2004-03-10 | 佳能株式会社 | Image forming device and its power control method |
| CN1497411A (en) * | 2002-10-08 | 2004-05-19 | 佳能株式会社 | Image forming device having low power consumption mode and its control method |
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