JP4132623B2 - Device for performing start-up control after power-on, its start-up control method, and storage medium in which the start-up control program is written - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus that performs start-up control after power-on, a start-up control method thereof, and a storage medium in which the start-up control program is written, and more particularly to a device that can complete start-up in a short time.
[0002]
[Prior art]
Conventionally, in a drive device having various functions, the CPU can read and use the condition setting input from the operation unit and the adjustment values on the machine set by the serviceman and at the time of factory shipment. In general, a plurality of CPUs are also used in order to distribute the control burden when executing the functions provided. As this type of apparatus, for example, Japanese Patent Laid-Open No. 9-54525 describes an example of an image forming apparatus.
[0003]
This type of device starts the start-up control of each unit in the device according to various preset settings so that each unit that realizes the device function can be driven immediately after the power is turned on. In the case where a plurality of CPUs are provided and control for each unit is distributed, start-up control is performed for each CPU.
[0004]
[Problems to be solved by the invention]
In such a conventional apparatus, when a control burden is shared by a plurality of CPUs, the startup control is performed by reading various data from the memory prepared for each CPU. However, if all the memories are expensive non-volatile memories that can retain data even after the power is shut off, the cost increases. For this reason, the CPU memory that controls the entire device including the operation unit is a nonvolatile memory, and after turning on the power, various data stored in the nonvolatile memory is read out and transferred to the memory of another CPU, and the data transfer It is conceivable to devise another CPU to execute the start-up control after the holding is completed.
[0005]
However, the data to be transferred to be stored in the memory for other CPUs after the power is turned on has little effect on the start-up time in a device with a small amount of data. Data such as values increases and the transfer time delays the drive preparation completion time.
[0006]
As data to be transferred, there are data necessary for activation (startup) and data not necessary for activation but necessary for actual operation. For example, in the case of a fixing unit of an electrophotographic copying machine, the fixing target temperature is necessary at the time of start-up, but the adjustment (target) value for different fixing temperatures for each paper type is before the actual copying operation is started. It only has to be. Conventionally, since unnecessary data was transferred together at the time of such activation, the start of data transfer to other units was delayed accordingly.
[0007]
Therefore, in the present invention, even when the stored data is transferred from the control means having the nonvolatile memory to another control means and stored in the memory, the start-up can be completed in a short time by devising the data transfer. An object of the present invention is to provide an apparatus that can be used without wasted waiting time.
[0008]
[Means for Solving the Problems]
  A first invention that solves the above-described problem includes a first control unit having a nonvolatile first storage unit and a second control unit having a second storage unit, and the first control unit When the power is turned on, the second data necessary for starting the unit controlled by the second control unit and the second data necessary for the operation of the unit are transferred from the first storage means to the second data. In the electronic device for transferring according to the priority set in advance in the storage means, the unitIsA fixing unit that fixes images recorded on paper by heating them to the fixing temperature.Yes,The first control unit automatically replaces priorities of the first data and the second data based on the temperature of the fixing unit,
[0009]
  For example, the first control unitButThe overall control of the entire device, the second control unitButEach unit in the apparatus is individually controlled (second invention),
[0010]
  An electronic apparatus start-up control method comprising a first control unit having a nonvolatile first storage unit and a second control unit having a second storage unit, wherein the first control unit Is a unit that is controlled by the second control unit when the power is turned on.A fixing unit that fixes an image recorded on a sheet by heating to a fixing temperature.The first data required when startingFixingThe second data required during the operation of the unit is transferred from the first storage means to the second storage means in accordance with a preset priority order, and the first controller is configured to control the temperature of the fixing unit. The priority order of the first data and the second data is automatically switched based on7Invention)
[0011]
  A storage medium that stores a program for executing start-up control of an electronic device including a first control unit having a nonvolatile first storage unit and a second control unit having a second storage unit The first control unit is a unit that the second control unit controls when the power is turned on.A fixing unit that fixes an image recorded on a sheet by heating to a fixing temperature.The first data required when startingFixingA process of transferring second data required during operation of the unit from the first storage unit to the second storage unit in accordance with a preset priority, and the first control unit includes: A program for executing a process of automatically switching the priority order of the first data and the second data based on temperature is stored in a readable manner (first).8Invention). The storage medium here is synonymous with a so-called recording medium, and can store and store (store) data, for example, a memory, a floppy (registered trademark) disk, a compact disk, a hard disk device, etc. Since any medium may be used and data may be held in the same format as the storage unit, the term “memory” is used.
[0012]
  In the present invention, the data in the nonvolatile first storage means is read out by the first control unit according to the preset priority order, transferred to the second control unit, and the second storage means The start-up control of the unit that realizes the device function based on the data is started by the second control unit. Therefore, after the power is turned on, it is possible to start from the start-up control of the unit using data with high priority.Further, according to the present invention, when the image forming apparatus is provided with a unit that realizes an image reading function such as a copying machine or a facsimile machine, the above-described invention can be realized and the start-up control can be performed quickly. Can do. For example, by setting a high priority for data used during start-up control such as initial setting, and reading and transferring first after power-on, start-up control can be started quickly, and image recording Data used at times can be read and transferred during start-up control. Further, according to the present invention, in an image forming apparatus including a fixing unit that heats and fixes an image recorded and formed on a sheet, the priority order of data to be read / transferred is automatically switched according to the temperature of the fixing unit when the power is turned on. The Here, since it takes time to raise the temperature of the fixing unit from room temperature to the target temperature, the priority for reading and transferring data for controlling the start-up of the fixing unit is set at the highest level. When the power is turned on again without any interval after the power is turned off, the fixing unit is in a high temperature state, and the temperature can be raised to the target temperature without taking much time. Therefore, according to the temperature of the fixing unit, the priority for reading and transferring data for controlling the start-up of the fixing unit is automatically switched, and the start-up control is performed with the priority according to the apparatus state. It is possible to start up from a power-on state without wasting time.
[0013]
  According to a third invention for solving the above-mentioned problems, in addition to the configuration of the first or second invention,FixingThe priority order of the first data required for the start-up control of the unit is set high.
[0014]
  In this invention,Fixing unitStart-up control is started by reading and transferring data necessary for start-up control. Therefore, data necessary after completion of startup can be delayed and transferred from data required for startup control performed before that, and startup control can be started immediately after power-on.
[0016]
  further,In the present invention, start-up control is started by reading / transferring data that takes time in start-up control. Therefore, it is possible to transfer the data required for the time-consuming start-up control and start the start-up control sequentially after the completion of the reception and to perform the parallel processing, thereby further shortening the time until the start-up control is completed. it can.
[0019]
  The first to solve the above problem4The invention of the first aspect3In addition to the configuration of any of the inventions, priorities of the first data and the second data are manually input according toSelfIt is characterized by dynamic replacement.
[0020]
  According to the present invention, the priority order of data transfer can be switched by manually inputting from the operation unit according to the user's circumstances.it can.Therefore, for example, when a part of the device function is used, it can be started with priority from the start-up control of the unit that realizes the function, and depending on the start-up time that changes depending on the device state Start-up control that starts with priority can be switched.The
[0027]
  The first to solve the above problem5The invention of the first to the above4In addition to the configuration of the invention, when the fixing unit is at a preset temperature or lower, the priority order of the data necessary for the start-up control of the fixing unit among the first data is increased. It is a feature.
[0028]
According to the present invention, when the fixing unit of the image forming apparatus is below the set temperature, the priority order for reading and transferring data necessary for the start-up control of the fixing unit is automatically set high. That is, when the fixing unit is below a set temperature that takes time to raise the temperature to the target temperature, the priority for reading and transferring data for the start-up control is set to the highest. Therefore, it is possible to start up the system in a usable state without wasting time after the power is turned on.
[0029]
  The first to solve the above problem6The invention of the above5In addition to the configuration of the invention, the set temperature can be changed.
[0030]
In the present invention, the set temperature for determining how long it takes to control the start-up of the fixing unit can be input and changed from the operation unit or the like. Therefore, the priority order can be changed according to the installation environment and the circumstances of the user, and it is possible to start up in a state where it can be used with the optimum startup control.
[0031]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings. 1 to 8 are diagrams showing a first embodiment of an apparatus for executing a startup control method after power-on according to a startup control program written in a storage medium according to the present invention.
[0032]
In FIG. 1, reference numeral 10 denotes a copying machine in which a scanner (image reading) apparatus 100 is mounted on an image forming apparatus 300. This copying machine 10 is shown in FIG. 3 in response to an input instruction from the operation unit 30 shown in FIG. The control units 11 and 21 drive and control each part of the apparatus according to the control program, so that the image data read by the scanner apparatus 100 can be recorded and formed on the transfer transfer paper (paper) P to copy the original.
[0033]
When the print start key 34 disposed on the operation unit 30 is pressed, the scanner apparatus 100 causes the automatic document feeder 200 to start from the lowest document in the document bundle set on the document table 201 with the image surface facing upward. Separation feeding roller pair (forward / reverse driving roller pair) 202 separates and feeds one sheet at a time, and feeding belt 203 feeds and stops at a predetermined position on contact glass 101 to complete reading of the original image. Thereafter, the original is carried out from the contact glass 101 by the feeding belt 203 and discharged onto the paper discharge tray 205 by a pair of discharge rollers (drive roller and driven roller) 204. When the document set detection sensor 206 detects the setting of the next document on the document table 201, the feeding / discharging on the contact glass 101 is continued as in the case of the previous document. Note that the separation feed roller pair 202, the feed belt 203, and the discharge roller 204 are driven by a motor (not shown).
[0034]
The scanner device 100 reads an image from a document placed on the contact glass 101 by a scanning optical system reading unit, and reflects reflected light from the document image exposed by the exposure lamp 102 in the first to first directions. The image data photoelectrically converted can be read by being reflected by the three mirrors 103 to 105 and guided to the CCD image sensor 107 through the lens 106. The reading unit fixes the exposure lamp 102 and the first mirror 103 on the first carriage (not shown), and fixes the second mirror 104 and the third mirror 105 on the second carriage (not shown), thereby At the time of reading, the first carriage and the second carriage are mechanically run at a relative speed of 2 to 1 by a scanner drive motor (not shown) so that the optical path length does not change.
[0035]
The image forming apparatus 300 stacks transfer papers P of different sizes on the first tray 301, the second tray 302, and the third tray 303, and the transfer paper P is sent out by a calling roller 304 to be separated and fed. Each pair is separated by a pair 305 and fed downstream, and thereafter, the transfer paper P is transported by a plurality of transporting roller pairs R formed of a driving roller 306 and a driven roller 307. And is nipped and conveyed between the conveying belt 309 (transfer unit) so as to transfer a later-described toner image formed on the photosensitive member 308. After the image read by the scanner device 100 is transferred and recorded on this transfer paper P, the recorded image is fixed by being received and nipped and conveyed by a fixing roller pair (fixing unit) 310 heated to a target temperature. Then, the paper is transferred from the conveyance roller pair 311 to the paper discharge roller pair 312 and is discharged and stacked on the paper discharge tray 313. The transfer paper P carried out by the conveying roller pair 311 is guided by the branching claw 314 so as to be reversed and switched back, and then fed again to the transfer portion between the photosensitive member 308 and the conveying belt 309. Thus, images can be recorded and formed on both sides of the transfer paper P.
[0036]
The image forming apparatus 300 collects the laser light emitted from the laser output unit 320 based on the image data read by the scanner apparatus 100 by the imaging lens 321 and irradiates and irradiates the outer peripheral surface of the photoreceptor 308 with the mirror 322. By forming an image, an electrostatic latent image (potential distribution) is formed on the photosensitive member 308. The electrostatic latent image formed on the photosensitive member 308 is developed with toner by a developing roller 323, and is visualized. Then, the toner image is transferred onto the transfer paper P transported by a transfer unit between the rotation of the photosensitive member 308 and the transport belt 309 driven at a constant speed. The laser output unit 320 includes a laser diode that is a laser light source and a rotating polygon mirror that rotates the laser beam at high speed and constant speed by a motor and is synchronized with the rotation of the photosensitive member 308. The laser beam polarized so as to expose the photosensitive member 308 by scanning line by line in the orthogonal direction (main scanning direction) with respect to the rotation direction (sub-scanning direction) of the photosensitive member 308, thereby exposing the electrostatic latent image. Form. The synchronization between the irradiation of the laser beam and the rotation of the photosensitive member 308 is set so as to irradiate a laser beam (not shown) disposed near one end of the photosensitive member 308 to generate a main scanning synchronization signal. Based on the main scanning synchronization signal, a control signal for image recording start timing in the main scanning direction is generated.
[0037]
As shown in FIG. 2, the operation unit 30 that inputs the operations of the scanner device 100 and the image forming apparatus 300 includes a liquid crystal touch panel 31, a numeric keypad 32, a clear / stop key 33, a print start key 34, and a mode clear key 35. Various function keys 37 are arranged on the liquid crystal touch panel 31, and a copy number 38 and a message area 39 for informing a message such as “Ready to copy” and “Please wait” are displayed. (Arranged) indicates the selection by reversing the display key touched by the operator (user or serviceman) in black and white, and specifies the details of the selection function (for example, the magnification value for magnification) When necessary, a detailed function setting screen is displayed. Since the liquid crystal touch panel 31 uses a dot display, it can graphically perform an optimal display at that time, and as function keys, an automatic density key for automatically adjusting image density, a transfer Automatic paper selection key for automatically selecting paper P, sort key for specifying processing for arranging copies in order of pages one by one, stack key for specifying processing for sorting copies for each page, equal magnification for setting magnification to 1 × There are prepared a key, a scaling key for setting an enlargement / reduction ratio, a duplex key for setting a duplex mode, an erase / move key for setting a binding margin mode, and the like. Further, an initial setting key 36 disposed in the operation unit 30 is an input key for pressing when a driving condition or the like changed by an input operation is returned to, for example, a default driving condition set at the time of shipment. It is.
[0038]
Further, as shown in FIG. 3, the control means for controlling the scanner apparatus 100 and the image forming apparatus 300 is driven and controlled so that the main control unit (central control unit) 11 that performs overall control of the entire apparatus and each part of the apparatus function. It is divided into an engine control unit (drive control unit) 21 that distributes the execution burden on control, and each of the CPUs (control units) 12 and 22 of these control units 11 and 21 has a ROM ( (Storage medium) Outputs control signals to each part of the apparatus while using the RAMs 14 and 24 as storage holding areas (work areas) for data necessary to operate in accordance with the control programs written in the storage programs 13 and 23. Needless to say, the control programs in the ROMs 13 and 23 may be configured such that the control programs written in the externally connected storage medium can be downloaded and rewritten / updated.
[0039]
The main control unit 11 is connected to the operation unit 30 via the IO port 15 and is provided with a nonvolatile memory (first storage means) 16 for storing and holding preset data such as parameters in a nonvolatile manner. The CPU 12 executes a control program stored in the ROM 13 based on an input instruction from the operation unit 30 by a user or the like and data stored in the nonvolatile memory 16. On the other hand, the engine control unit 21 includes a motor (MT) and clutch (CL), a heater (HT) for fixing control, and a thermistor (TH) disposed in the scanner device 100 and the image forming apparatus 300 via the IO port 25. Are not prepared in a non-volatile memory separate from the non-volatile memory 16, and the data stored in the non-volatile memory 16 is accessed only by the CPU 12. Since the CPU 22 cannot be accessed, the CPU 22 of the main control unit 11 reads / transfers data from the nonvolatile memory 16 according to a preset priority order after the power is turned on. (Volatile second storage means) After being stored and held in 24, in ROM 23 According paid to the control program, and starting the start-up control or the like shown in FIGS. 6 to 8 which will be described later, also, so as to control the functions of the respective units as a copier.
[0040]
  Here, in the nonvolatile memory 16, various settings such as selection of the paper size input from the operation unit 30 and selection of the paper discharge tray, adjustment values at the time of assembling the apparatus in the factory (adjustment of paper and image positions, etc.) ), Settings according to the user, installation environment, and the like by the service person are stored as preset stored data regardless of whether the power is on or off. The storage data read out from the nonvolatile memory 16 and transferred to the engine control unit 21 is necessary for starting a preparation operation for starting up to an image readable / formable state when the power is turned on, for example, as shown in FIG. 1st group data such as various adjustment values(First data according to the present invention)And second group data such as adjustment values required at the start of copying(Second data according to the present invention)The priority order of reading and transferring at the time of turning on the power is determined by pressing the initial setting key 36 of the operation unit 30 to enter the initial setting mode and inputting the ten key together with the priority changing instruction to enter the nonvolatile memory 16. It can be changed by writing inside.
[0041]
Then, as shown in FIG. 5, the CPU 12 of the main control unit 11 resets the variable i upon power-on according to the control program in the ROM 13 (step S <b> 1), and then increments the variable i. Is read out and transferred so as to be stored and held in the RAM 24 of the CPU 22 (steps S2 and S3), and the process proceeds to step S2 until the transfer of all data necessary for the control of the CPU 22 is completed. The same processing is repeated after returning (step S4). Here, the storage in which the priority is set higher in the first group data necessary for the start-up control (preparation operation) shown in FIG. From data, fixing control data, toner density control data, scanner control data, etc. The data necessary for the preparatory operation is sequentially read out and transferred to the engine control unit 21. After the transfer is completed, the second group data, the image position adjustment data for the transfer paper P, and other storage data required for image formation Read / transfer is executed. On the other hand, the CPU 22 of the engine control unit 21 receives all the first group data necessary for the unit-unit startup control, stores it in the RAM 24, and then stores the first group data in each part of the apparatus that uses the first group data. Start-up control is started for each unit. Note that the storage data shown in FIG. 4 is an example of storage data used during the control operation, and it goes without saying that the storage data is not limited to this. The priority for reading / transferring stored data is determined by transferring the storage data necessary for startup control first, starting the preparatory operation so that it can be processed in parallel by time-sharing processing, etc. The storage data necessary for image formation is set to be transferred, and among the storage data required for start-up control, priority is given to the data for temperature control of the fixing roller pair 310 that takes the longest time to complete the start-up. The priority is set first, then the priority of the time-consuming toner density adjustment control data is set second, and then the time-consuming scan (original image reading) automatic adjustment data Although the priority is set third, it is needless to say that the priority is not limited to this, and the time taken to complete the start-up control may vary depending on the device. Flip and may be set.
[0042]
Specifically, when the power is turned on, the main control unit 11 reads / transfers the storage data for fixing control that has the longest time for start-up control and the highest priority in FIG. On the other hand, as shown in FIGS. 6 to 8, the engine control unit 21 receives the first group data transferred from the main control unit 11 for each unit of each part of the apparatus after the power is turned on. After completion, start-up control based on stored data for each unit is performed in parallel by time-sharing processing or the like, and control based on second group data read / transferred after this first group data is performed. It is to be done in parallel.
[0043]
That is, first, as shown in FIG. 6, the engine control unit 21 receives the first group data for fixing control transferred from the main control unit 11, and completes the storage and holding in the RAM 24 (step P11). , P12), and using the first group data used in the fixing control in FIG. 4 to perform start-up control such as raising the temperature of the fixing roller pair 310 to be drivable (step P13), the first group data Subsequently, after the start-up preparation operation is executed using the second group data for fixing control transferred according to the priority order and stored and held (step P14). It waits after finishing these start-up controls. Here, the storage data for fixing control includes, as the first group data, presence / absence of an unreleased service man call (SC) prohibiting start-up, a heater control system for raising the temperature of the fixing roller pair 310, and a fixing roller pair. A target temperature for increasing the temperature of 310 for plain paper transfer paper is set, and the second group data includes the target temperature of the fixing roller pair 310 and the fixing roller when a type other than plain paper is selected as the transfer paper. Examples include a set temperature for determining whether or not to reduce the copy speed (CPM) when the temperature of the pair 310 decreases due to factors such as environmental temperature, a set speed when the copy speed needs to be reduced, and the like. .
[0044]
Next, as shown in FIG. 7, the first group data for toner concentration control transferred from the main control unit 11 following the first group data for fixing control is received, and the storage and holding in the RAM 24 is completed. Then (steps P21 and P22), the control (calibration / adjustment) operation for enabling image formation with a constant toner density by the photoconductor 308 using the first group data used in the control around the process in FIG. (Step P23), preparation is made until the copying operation is started using the second group data for toner density control which is transferred according to the priority order following the first group data and stored therein. After the start-up, the control operation is executed (step P24), and after the start-up control is finished, the control waits. Here, the storage data for control around the process for making the toner density constant includes, as the first group data, the calibration target value of the potential sensor for detecting the charging of the photoconductor 308 and the toner amount with respect to the carrier. The previous adjustment value of the output of the P sensor that detects the toner adhesion amount on the sensor and the photoconductor 308 (adjustment value used at the time of previous driving used to shorten the adjustment time by reducing the adjustment width), the photoconductor The previous adjustment value of the bias of the charger 308 (not shown) and the developing roller 323, the target value and the previous adjustment value of the amount of laser diode (LD) that emits the laser light to be written on the photosensitive member 308, and the like are set. As data, toner replenishment control that employs either toner replenishment control based on the detection result of the T sensor or P sensor or toner replenishment control by counting the number of pixels to be recorded is employed. Setting over de, toner supply amount ability setting for adjusting and setting the creation interval of P pattern can be cited for detecting the amount of adhered toner by P sensors on the photoreceptor 308.
[0045]
Next, as shown in FIG. 8, when the first group data for scanner control transferred following the toner density control data from the main control unit 11 is received and the storage in the RAM 24 is completed (step P31). , P32), and using the first group data used in the control of the scanner apparatus 100 in FIG. 4 to perform a control operation (automatic adjustment) for starting up the document image stably and readable (step P33), Using the second group data for scanner control transferred and stored in accordance with the priority order following the first group data, the read control operation after start-up prepared before starting the copy operation is executed. (Step P34) After the start-up control is finished, the process waits. Here, the storage data for scanner control for making the original image reading constant includes, as the first group data, the target value of the reflected light density by the reference white plate, the previous adjustment value of the white reference, and the previous reference value of the black reference. Adjustment values and the like are set, and examples of the second group data include adjustment values for main and sub-scanning resists when reading a document image.
[0046]
Thereafter, the engine control unit 21 processes the data necessary for other start-up control preparatory operations that are similarly transferred from the main control unit 11, and is transferred subsequent to the start-up control data. Image position adjustment data such as main / sub-scanning resist adjustment values for irradiating the photosensitive member 308 with laser light, paper conveyance timing adjustment values for transferring the toner image on the photosensitive member 308, and other images Data necessary for formation is processed, and after the start-up control is completed, the process waits.
[0047]
Therefore, after the power is turned on, it can be started from the start-up control of the fixing roller pair 310 which takes the most time, and in parallel with the start-up control of the fixing roller pair 310, another start-up is performed by time-division processing or the like. The control can be started sequentially, and the preparation operation can be completed quickly without useless waiting time.
[0048]
As described above, in the present embodiment, the main control unit 11 and the engine control unit 21 are provided in order to reduce the control burden, and data necessary for control is avoided in order to avoid an increase in cost. Even if the engine control unit 21 is stored and held in the non-volatile memory 16 and transferred to the engine control unit 21 after the power is turned on, the data required for the complicated start-up control can be saved in the preparatory operation with the highest priority set. It is possible to start up in a usable state quickly by transferring sequentially from the fixing roller pair 310. Therefore, the use of the copying machine 10 can be started without wasteful waiting time after the power is turned on.
[0049]
Further, as another aspect of the present embodiment, in this embodiment, as shown in FIG. 4, the first group data and the second group data for each unit are separately set in priority order to be read / transferred. However, the present invention is not limited to this. For each unit, the first group data is first read / transferred, and then the second group data of the same unit is continuously read / transferred. Needless to say, it may be.
[0050]
Next, FIG. 9 to FIG. 13 are diagrams showing a second embodiment of the apparatus for executing the startup control method after power-on according to the startup control program written in the storage medium according to the present invention. Since the present embodiment is configured in substantially the same manner as the above-described embodiment, the same reference numerals are given to the same configurations with reference to FIGS.
[0051]
1 to 4, the copier 10 includes a scanner device 100 and an image forming device 300, and when the power is turned on, the CPUs 12 and 22 of the control units 11 and 21 exchange according to the control program in the ROMs 13 and 23. Thus, a start-up control method is performed in which read-out and transfer from stored data with high priority held in the non-volatile memory 16 is performed to sequentially start a preparatory operation, which is arranged in the image forming apparatus 300. As shown in FIG. 9, the fixing roller pair 310 is heated and maintained at the target temperature Ha. However, if the power is turned on again in a short time after the power is turned off, the temperature is not so high. In this embodiment, since the preparation time for raising the temperature to the target temperature Ha can be shortened in a state in which the main control unit 11 is not lowered, the main control unit 11 is in the nonvolatile memory 16. So that the can be interchanged in accordance with the priority of read-transferred to the engine control unit 21 to the temperature of the fixing roller pair 310.
[0052]
Specifically, the time required for automatic adjustment when the start-up control of the scanner device 100 is always constant at Ts seconds, and various sensor calibrations around the process for keeping the toner density constant in the image forming apparatus 300 Since the time required for the adjustment is always constant at Tp seconds, the time Th required to raise the temperature of the fixing roller pair 310 to the target temperature Ha is Th 1 seconds, Hc ° C. for raising the temperature from 0 ° C. to Ha ° C. Assuming that it takes Th2 seconds to raise the temperature from Hb to Ha ° C and Th3 seconds to raise the temperature from Hb ° C to Ha ° C, these are expressed as Th3 <Tp <Th2 <Ts <Th1. As shown in FIG. 10, the CPU 22 of the engine control unit 21 checks the temperature of the fixing roller pair 310 according to the program stored in the ROM 23 when the power is turned on. The priority order of the stored data in the nonvolatile memory 16 is determined according to the respective preparation times Th1, Th2, Th3, Tp, Ts, and a transfer request for the stored data in the nonvolatile memory 16 is sent to the main control unit 11 in the order of the priority order. It comes out.
[0053]
That is, when the temperature of the fixing roller pair 310 <Hc (step P101) when the CPU 22 of the engine control unit 21 is turned on (step P101), data necessary for fixing temperature control → necessary for toner density control. By sending a transfer request for stored data from the engine control unit 21 to the main control unit 11 with the priority order of the data necessary for the automatic adjustment of data → scanner (step P111), the CPU 12 of the main control unit 11 follows the transfer request. As shown in FIG. 11, the fixing control data transfer (step P112), the toner density control data transfer (step P113), and the scanner control data transfer (step P114) in the above-described embodiment are sequentially executed. Similarly, transfer of data necessary for other preparatory operations ( Step P115), executes the image position adjustment data and other image forming when transferring store data necessary (steps P116, P117).
[0054]
The CPU 22 of the engine control unit 21 that has received the transfer data starts up based on the fixing control data in steps P11 to P14 in the above-described embodiment, and starts up based on the toner density control data in steps P21 to P24. Control, start-up control based on scanner control data in steps P31 to P34 is started sequentially after completion of each data reception, and is processed in parallel by time-sharing processing or the like, and similarly to other preparatory operations. Start-up control is executed based on necessary data, image position adjustment data, and other stored data necessary for image formation.
[0055]
The CPU 22 of the engine control unit 21, when Hc ≦ the temperature of the fixing roller pair 310 <Hb at power-on (steps P101 and P102), data necessary for toner density control → data necessary for fixing temperature control → scanner. By issuing a storage data transfer request from the engine control unit 21 to the main control unit 11 in the priority order of data necessary for automatic adjustment (step P121), the CPU 12 of the main control unit 11 follows the transfer request in FIG. As shown, the toner density control data transfer (step P122), the fixing control data transfer (step P123), and the scanner control data transfer (step P124) in the above-described embodiment are sequentially executed. Transfer of data necessary for other preparatory operations (Step P12) ), Executes the image position adjustment data and other image forming when transferring store data required for the (step P126, P127).
[0056]
The CPU 22 of the engine control unit 21 that has received the transfer data starts up based on the toner density control data in steps P21 to P24 in the above-described embodiment, and starts up based on the fixing control data in steps P11 to P14. Control, start-up control based on scanner control data in steps P31 to P34 is started sequentially after completion of each data reception, and is processed in parallel by time-sharing processing or the like, and similarly to other preparatory operations. Start-up control is executed based on necessary data, image position adjustment data, and other stored data necessary for image formation.
[0057]
Further, the CPU 22 of the engine control unit 21, when the power is turned on, when Hb ≦ the temperature of the fixing roller pair 310 (steps P101 and P102), data necessary for toner density control → data necessary for automatic scanner adjustment → fixing temperature control By issuing a storage data transfer request from the engine control unit 21 to the main control unit 11 in the order of priority of data required for the operation (step P131), the CPU 12 of the main control unit 11 follows the transfer request as shown in FIG. In addition, the toner density control data transfer (step P132), the scanner control data transfer (step P133), and the fixing control data transfer (step P134) in the above-described embodiment are sequentially executed. Transfer of data necessary for operation (step P135) Performing image position adjustment data and other image forming when transferring store data necessary (steps P136, P137).
[0058]
The CPU 22 of the engine control unit 21 that has received the transfer data starts up based on the toner density control data in steps P21 to P24 and starts up based on the scanner control data in steps P31 to P34 in the above-described embodiment. Control, start-up control based on the fixing control data in steps P11 to P14 is started sequentially after the completion of each data reception, and is processed in parallel by time-sharing processing or the like. Start-up control is executed based on necessary data, image position adjustment data, and other stored data necessary for image formation.
[0059]
Therefore, after the power is turned on, the start-up control that takes the most time can be sequentially started, and the preparation operation can be completed quickly without useless waiting time.
[0060]
Here, the temperatures Hb and Hc should originally be stored in the ROM 23 as values determined for each apparatus. However, in the time required for the fixing unit to reach the target temperature, the fixing roller pair 310 or Since there are individual differences depending on the built-in heater or the like, it is desirable to be able to adjust these temperatures. In this case, the adjustment work itself can be performed by inputting each temperature in the initial setting mode that is entered by pressing the initial setting key 36 from the operation unit 30 and writing it in the nonvolatile memory 16. At this time, it is necessary to transfer the set values of Hb and Hc from the nonvolatile memory 16 to the RAM 24 before the processing of FIG. That is, after the power is turned on, first, the CPU 12 reads the values of Hb and Hc from the nonvolatile memory 16 and transfers them to the RAM 24. After the transfer is completed, the CPU 22 performs the processing shown in FIG.
[0061]
As described above, in the present embodiment, in addition to the function and effect of the above-described embodiment, in accordance with the temperature (device state) of the fixing roller pair 310, the data is read from the nonvolatile memory 16 of the main control unit 11 and sent to the engine control unit 21. Since the priority order to be transferred is automatically switched, the start-up control according to the apparatus state can be quickly performed. Therefore, even when the power is turned on again, use of the copying machine 10 can be started without wasted waiting time.
[0062]
【The invention's effect】
According to the present invention, the data stored and held in the nonvolatile first storage means for the first control unit is, for example, required for start-up control or time required for completion of start-up or unit units. Accordingly, the start-up control is efficiently started after the power is turned on and is made ready for use by reading / transferring it into the second storage means for the second control unit in accordance with the preset priority order. It is possible to start up comfortably from a desired device function by manually inputting or automatically changing the priority order setting according to the user or the device state.
[0063]
Therefore, it is possible to start up the functions provided by the image reading device and the image forming device without causing a stress due to a wasteful waiting time from the power-on to the completion of the startup, and it can be used comfortably. Can start.
[Brief description of the drawings]
FIG. 1 is a diagram showing a first embodiment of an apparatus for executing a startup control method after power-on in accordance with a startup control program written in a storage medium according to the present invention, and shows a front perspective view showing the basic configuration of the apparatus FIG.
FIG. 2 is a plan view showing the operation unit.
FIG. 3 is a block diagram showing the configuration of the main part.
FIG. 4 is a list showing an example of data used in the start-up control.
FIG. 5 is a flowchart illustrating a process in the start-up control.
FIG. 6 is a flowchart illustrating the start-up control.
FIG. 7 is a flowchart for explaining the start-up control.
FIG. 8 is a flowchart for explaining the start-up control.
FIG. 9 is a diagram illustrating a second embodiment of a device that executes a start-up control method after power-on in accordance with a start-up control program written in a storage medium according to the present invention, and is a graph illustrating the state of the device .
FIG. 10 is a flowchart illustrating the start-up control.
FIG. 11 is a flowchart illustrating the start-up control.
FIG. 12 is a flowchart for explaining the start-up control.
FIG. 13 is a flowchart for explaining subsequent startup control.
[Explanation of symbols]
10 Copying machine
11 Main control unit
12, 22 CPU
13, 23 ROM
14, 24 RAM
15, 25 IO port
16 Nonvolatile memory
21 Engine control unit
30 Operation unit
100 Scanner device
101 Contact glass
102 Exposure lamp
107 CCD image sensor
200 Automatic document feeder
300 Image forming apparatus
308 photoconductor
310 Fixing roller pair
320 Laser output unit

Claims (8)

A first control unit having a non-volatile first storage unit; and a second control unit having a second storage unit, wherein the first control unit is configured to perform the second control when power is turned on. The first data required when starting the unit, which is controlled by the unit, and the second data required when the unit is operating according to the priority set in advance from the first storage means to the second storage means In the electronic device to transfer,
The unit is a fixing unit that fixes an image recorded on a sheet by heating it to a fixing temperature ,
The electronic apparatus according to claim 1, wherein the first control unit automatically switches the priority order of the first data and the second data based on a temperature of the fixing unit.   The electronic device according to claim 1, wherein the first control unit performs overall control of the entire device, and the second control unit individually controls each unit in the device. 3. The electronic apparatus according to claim 1, wherein a priority of the first data necessary for start-up control of the fixing unit is set high. 4. The electronic device according to claim 1, wherein priorities of the first data and the second data are switched according to manual input. 5. The priority order of data necessary for start-up control of the fixing unit among the first data is increased when the fixing unit is at a preset temperature or lower. 5. The electronic device according to any one of 4. The electronic apparatus according to claim 5, wherein the set temperature is changeable. An electronic apparatus start-up control method comprising a first control unit having a nonvolatile first storage unit and a second control unit having a second storage unit,
The first control unit is a unit that is controlled by the second control unit when the power is turned on, and is necessary for starting a fixing unit that fixes an image recorded on a sheet by heating to a fixing temperature. And the second data required during operation of the fixing unit are transferred from the first storage means to the second storage means in accordance with a preset priority order,
The startup control method, wherein the first control unit automatically replaces the priorities of the first data and the second data based on the temperature of the fixing unit. A storage medium that stores a program for executing start-up control of an electronic device including a first control unit having a nonvolatile first storage unit and a second control unit having a second storage unit There,
The first control unit is a unit that is controlled by the second control unit when the power is turned on, and is necessary for starting a fixing unit that fixes an image recorded on a sheet by heating to a fixing temperature. And transferring the second data necessary for the operation of the fixing unit from the first storage means to the second storage means in accordance with a preset priority order;
The first control unit is readable and stored with a program for executing a process of automatically switching the priority order of the first data and the second data based on the temperature of the fixing unit. A storage medium characterized by that.

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