JP2000250381A - Drive control method for cooling means, storage medium and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the operating noise of a fan while keeping the ambient temperature of a photoreceptor within a temperature capable of forming an image of good quality by changing a fan drive control mode based on an outside air temperature and controlling in accordance with the temperature under the environment where the image forming device main body is placed. SOLUTION: The basic sequence of the drive control of each fan is constituted of four modes. In a 1st mode, the fan is rotated at a full speed at the same time when a start key on a control part is depressed, and the fan is stopped after ending an image forming job. In a 2nd mode, when a main power source is turned on, the fan is rotated at a half-speed, and the fan is rotated at a full speed at the same time when the start key is depressed, and the rotation is shifted to the half-speed rotation after a lapse of fixed time after ending the job. The four modes including a 3rd mode and a 4th mode in addition to two modes are settled by tests. The corresponding drive control modes to the outside air temperature are previously stored in a ROM, then, the mode is appropriately selected based on the detection results of the outside air temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine and a laser printer.

[0002]

2. Description of the Related Art Conventionally, an image forming apparatus such as a copying machine and a laser printer has been provided with a fan to cool around a photoconductor and around a fixing unit in order to prevent circuit boards and image deterioration.

For example, Japanese Patent Application Laid-Open No. 9-212066 discloses that an optical unit, a photoreceptor unit, a developing unit, a fixing unit, and a power supply unit are provided with respective fans, and an optical temperature sensor, an ozone sensor, and a fixing temperature sensor are provided. It is disclosed that the operation time and air flow of each fan are controlled based on information in each unit detected by each sensor of the power supply temperature sensor.

[0004]

However, when cooling with a fan, there is a problem that the operating noise of the fan is loud during not only image formation but also during standby or the like.

Particularly, in recent years, digital copiers have been digitized and functions have become more complex (for example, with a facsimile, with a printer, etc.), and the number of circuit boards for controlling them has been increasing. In addition, for paper transport, a power supply is needed to provide a plurality of motors for driving these rollers, such as fine control of each roller transport speed to increase productivity and the possibility of freely discharging the front and back sides. It is getting bigger. Therefore, the operating noise of the fan tends to increase in proportion to the increase in such functions.

Japanese Patent Application Laid-Open No. Hei 9-212066 describes that the operation time and air flow of a fan are controlled in order to save power and reduce noise, but a sensor is provided for each unit. Therefore, there is a problem that the number of sensors is required as many as the number of units and the cost is increased.

Accordingly, the present invention provides a drive control method for a cooling means, a storage medium, and an image forming apparatus capable of controlling the driving of a plurality of cooling means based on one temperature detection result. The purpose is.

Conventionally, the fan is controlled based on temperature information of each unit in the image forming apparatus. However, the present invention provides a cooling unit capable of controlling the driving of the cooling unit based on the outside air temperature. It is an object of the present invention to provide a drive control method, a storage medium, and an image forming apparatus.

[0009]

In order to achieve the above object, an image forming apparatus according to the present invention comprises a cooling means, a drive control means for controlling driving of the cooling means, and an outside air temperature detecting means for detecting a temperature of outside air. And the drive control means drives and controls the cooling means based on the detection result of the outside air temperature detection means.

Further, the image forming apparatus of the present invention comprises a first cooling unit, a second cooling unit different from the first cooling unit, a temperature detecting unit, and the first cooling unit based on a detection result of the temperature detecting unit. A control unit for controlling the cooling unit and the second cooling unit, wherein the control unit controls the first cooling unit and the second cooling unit based on one detection result. .

Still further, the storage medium of the present invention is characterized in that a drive control mode of a fan in the image forming apparatus corresponding to an outside air temperature is stored.

Further, according to a drive control method of a cooling means provided in the image forming apparatus of the present invention, an outside air temperature detecting step for detecting the temperature of the outside air, and the cooling means based on the detection result detected in the outside air temperature detecting step. And a drive control step of performing drive control.

Further, according to the drive control method of the cooling means provided in the image forming apparatus of the present invention, there is provided a temperature detecting step for detecting a temperature, and a first cooling means based on one detection result detected in the temperature detecting step. And a drive control step of driving and controlling a second cooling means different from the first cooling means.

The image forming apparatus of the present invention further comprises a fan,
It is characterized by comprising an outside air temperature detecting means for detecting the temperature of the outside air, and a storage medium storing a drive control mode of the fan corresponding to the detection result of the outside air temperature detecting means.

Further, the image forming apparatus of the present invention includes a cooling unit, a drive control mode of the cooling unit, and a selection unit for selecting a drive control mode of the cooling unit in accordance with an outside air temperature. It is characterized by.

In the present invention, since the driving control of the cooling means is performed based on the outside air temperature, the control can be performed according to the environmental temperature in which the image forming apparatus main body is placed, and the temperature around the photosensitive drum is determined by the image quality. Operating noise of the fan can be reduced while maintaining the temperature at which the temperature does not decrease. Further, since a plurality of cooling means are controlled based on one outside air temperature detection result, cost can be reduced.

[0017]

Next, an embodiment of the present invention will be described.

FIG. 1 is a schematic diagram showing the overall configuration of an image forming apparatus according to an embodiment of the present invention.

The image forming apparatus shown in FIG. 1 is a double-sided image forming apparatus capable of forming an image on both front and back surfaces of a sheet material as a recording material. First, the flow of image formation will be described.

The image forming apparatus includes a plurality of paper feed cassettes 15,
16, and sheet materials S of different sizes loaded and stored in the paper feed cassettes 15 and 16 are selectively fed to the transfer unit.

The sheet material S loaded and stored in the sheet cassette 15 or 16 is sequentially fed from the uppermost sheet material by a feed roller 17 or 18 rotating in the direction of the arrow. Then, the feeding roller 17 or 18
The sheet material S fed out is separated one by one by a separation roller pair 20 or 21 rotating in the direction of the arrow, and is fed to the second registration roller 22 and the registration roller pair 23 that are not rotating.

When the leading end of the sheet material S fed by the separation roller pair 20 or 21 strikes the nip of the registration roller pair 23, a predetermined loop is formed to correct the skew state.

Thereafter, the sheet material S whose skew state has been corrected is
Is transferred to the photosensitive drum 4 as an image carrier for carrying a toner image by a pair of registration rollers 23 which starts rotating in the direction of the arrow at the timing of aligning the position with the toner image on the photosensitive drum 4 rotating in the direction of the arrow. The toner image on the photosensitive drum 4 is transferred onto the sheet surface by the transfer charger 12.

In the image forming apparatus of this embodiment, an image of a document set on the platen glass 5 is read by the CCD 10 by an optical system including an illumination lamp 6, reflection mirrors 7, 8 and a zoom lens 9. After the desired image processing, the laser beam is irradiated on the photosensitive drum 4 rotating in the direction of the arrow by the laser scanner. Then, the electrostatic latent image formed on the photosensitive drum 4 is visualized by the black toner supplied from the developing device 14 to become a toner image.

The sheet material S on which the transfer of the toner image has been completed in the transfer section is sent to the fixing device 24 by the transport belt 13, and the toner image is heated by a heater provided in the identification attaching device 24 to be fixed on the sheet surface. You.

Sheet material S after fixing process of toner image
Is the inner discharge roller 2 in the case of the single-sided copy and the front discharge mode.
5, the paper is sent to the outer paper discharge roller pair 27, and is discharged onto the paper discharge tray 40 outside the apparatus with the image surface facing upward. At this time, the flapper 26 installed at the branch portion has been switched to the position 26a.

When images are formed on both sides of the sheet material S, the flapper 26 is switched to the position 26b, the sheet material S is once conveyed to the conveyance path 61, and then the arrow R
And is guided to the registration roller pair 23 via the conveyance path 50. Thereafter, an image is formed on the back surface of the sheet material S in the same manner as described above, and when the sheet is discharged outside the apparatus with the back surface of the sheet material S facing upward, the sheet is discharged onto the discharge tray 40.

Next, with reference to FIGS. 2, 3 and 4, each heat generating portion in the image forming apparatus, each portion heated by the temperature increase of each heat generating portion, and the arrangement of the fans will be described.

The heat-generating portion is a substrate (power supply substrates 71 and 72, a controller substrate 73, a FAX substrate (not shown), a printer substrate (not shown), etc.) arranged on the back side of the rear plate of the image forming apparatus main body. An image processing board provided in the reader unit 3, a circuit board such as a board provided in the laser driver 33, a heater provided in the fixing device 24, a motor 32 for driving a conveying roller and a polygon mirror.
It is.

When the temperature of each of these heat generating parts rises, the photosensitive drum 4 and the polygon mirror 31 also become warm. If the photosensitive drum 4 is too warm, the toner may be fused. If the polygon mirror has a mirror surface deposited thereon, the mirror surface may be peeled off if the photosensitive drum 4 is too warm.

Therefore, the image forming apparatus is provided with a plurality of fans for cooling the above-described internal elements of the circuit board, the motor, the fixing device, the photosensitive member, the polygon mirror, and the periphery thereof.

Next, the fan will be described. The arrangement and the wind direction of the fan are shown in FIGS. 2, 3 and 4. 2, 3, and 4 are provided with a feeder 63 instead of the cover 62 of the image forming apparatus of FIG. 1, and the other parts are the same as those of FIG.

The use / purpose of each fan (hereinafter, appropriately referred to as FM) will be described below.

The FM 1 is mounted inside the transport section 13 and is provided to attract paper onto the transport belt.
FM2 and FM3 are the exhaust heat around the fixing device 24, FM4 is the exhaust heat around the laser driver 33, and FM5 and FM6 are the polygon mirror 31 and the motor 3 for driving the polygon mirror.
Cooling of polygon scanner 30 equipped with FM2, FM7, F
M14, FM15, and FM16 are for cooling around the photosensitive drum 4, and FM8, FM10, FM11, FM17, and FM18.
Is the cooling of the circuit boards 71, 72, 73 on the back side of the rear plate of the main body, FM12 and FM13 are the cooling of the reader unit 3, FM
Reference numeral 9 is provided for cooling the guide plate 66 for preventing the paper from curling.

Next, a basic sequence of drive control of each fan will be described with reference to FIG.

In this embodiment, the rotation speed of the fan is controlled by switching the voltage supplied to the fan. In FIG. 5, the time during which the fan is rotating at full speed is indicated by a black band, and the fan is rotated at full speed. The time during which the fan is rotating at half speed (half speed) is indicated by a gray band, and the time during which the fan is stopped is indicated by a hatched band.

The basic sequence shown in FIG. 5 includes four modes. First, the first mode is a mode in which the image forming apparatus rotates at full speed at the same time when the start key on the operation unit is pressed, and stops after the image forming job is completed. FM1, FM9, FM
10, FM11, FM12, FM13, and FM18 are driven and controlled in the first mode. The second mode rotates at half speed when the main power is turned on, rotates at full speed at the same time the start key is pressed, and rotates for a certain period of time (**
*) After that, it will shift to half speed rotation. In the second mode, the driving control is performed for FM2, FM3, FM8, FM14, and F14.
M15, FM16, and FM17. In the third mode, a document is set on the feeder 63. Alternatively, the mode is a mode in which the document is rotated at full speed when the cover 62 of the document table is opened, and shifts to half-speed rotation after a fixed time (**) after the job is completed.
It is the FM5 that is driven and controlled in the third mode. In the fourth mode, when the main power is turned on, the document rotates at half speed, and the document is set on the feeder. Alternatively, the mode shifts to full-speed rotation when the cover of the platen is opened, and shifts to half-speed rotation after a fixed time (**) of the end of the job. FM
4, FM6 and FM7 are drive-controlled in this fourth mode.

These four modes are determined by experiments and are not limited to the above control.

Next, a method for changing the basic sequence of FIG. 5 according to the operating environment temperature of the image forming apparatus main body will be described.

As shown in FIGS. 1 and 3, a temperature sensor 100 for detecting the temperature of the outside air is provided in the main body of the image forming apparatus. It is desirable that the temperature sensor 100 be provided as far as possible from the heat generating portion so as not to be affected by the heat generating portion in the image forming apparatus. Further, in order to detect the outside air temperature, it is preferable to provide the sensor at a place where the outside air can be easily touched. In the present embodiment, as shown in FIG. 6, the temperature sensor 100 closes the ventilation hole 102 provided on the exterior of the image forming apparatus main body so that the outside air directly contacts the detection unit.

Next, a simple operation flowchart is shown in FIG.

When the drive control of the fan of the main body is started (STEP 1), the outside air temperature is detected. Detection result is 2
If the temperature is higher than 7.5 ° C., the drive of the fan is controlled based on the basic sequence of FIG. 5 (STEP 2).

If the detection result of the outside air temperature is 27.5 ° C. or less, the driving of the fan is controlled based on the sequence of FIG. 8 (STEP 3). FM1, FM9, FM10, FM
11, the drive of the FM 18 is controlled in the first mode,
FM3, FM8, FM14, FM15, FM16, FM
17 is drive-controlled in the second mode, FM5 is drive-controlled in the third mode, FM4, FM6, and FM7 are drive-controlled in the fourth mode, and the main power of the FM12 and FM13 is ON.
After that, the image forming job has been stopped until the end of the image forming job. That is, the driving of the FMs 12 and 13 is controlled in the fifth mode in which the fans are stopped, and the other fans are under the same control as the basic sequence in FIG.

Such a drive control mode corresponding to the outside air temperature is stored in advance in the ROM 70, which is a storage medium as shown in FIG. 9, and is appropriately selected based on the detection result of the outside air temperature.

As described above, when the FM 12 and the FM 13 are stopped, since the FM 12 and the FM 13 are provided near the exterior of the main body of the image forming apparatus, the operating noise of the fan leaking outside the image forming apparatus can be considerably suppressed. Can be. Further, even if the FM 12 and the FM 13 are stopped, the outside air temperature is 2
When the temperature is 7.5 ° C. or lower, the ambient temperature around the photosensitive drum is maintained within a temperature that does not deteriorate the image, so that the operating noise can be reduced while maintaining good image quality.

Hereinafter, the outside air temperature serving as a reference for stopping the FM 12 and the FM 13 will be described.

When the ambient temperature around the heat generating portion and the ambient temperature around other portions (around the photosensitive drum and around the polygon mirror) heated by the heat from the heat generating portion rise to some extent, they reach the "saturation temperature". Here, the “saturation temperature” refers to a temperature at which the ambient temperature reaches when the image forming apparatus is operated in a sequence in which the temperature inside the image forming apparatus rises most.

In the present embodiment, the temperature at which the ambient temperature reaches when the double-sided copying is continuously performed for 5000 sheets is set as the “saturation temperature” by stopping the FM 12 and the FM 13. FIG.
Is the relationship between the ambient temperature around the photosensitive drum and the number of copies when continuous double-sided copying is performed 5000 times with the FM 12 and FM 13 stopped when the outside air temperature is 27.5 ° C. and 32.5 ° C. And the outside air temperature is 32.5 ° C
5 shows the relationship between the ambient temperature around the photosensitive drum and the number of copies when 5000 copies are continuously made on both sides while the FM 12 and FM 13 are operating.

In the image forming apparatus of this embodiment, when the ambient temperature around the photosensitive drum is higher than 50 ° C., the toner is fused on the photosensitive drum, so that the image quality of the image formed on the recording material is deteriorated. Since the durability of the photosensitive drum is shortened, it is desirable that the ambient temperature around the photosensitive drum be kept lower than 50 ° C.

However, as is apparent from FIG. 10, when the outside air temperature is 32.5 ° C., the FM12 and the FM13
Is stopped, the “saturation temperature” of the ambient temperature around the photosensitive drum exceeds 50 ° C. Conversely, when the outside air temperature is 27.5 ° C., even when the FM12 and FM13 are stopped and continuous double-sided copying is performed for 5000 sheets, the “saturation temperature” of the ambient temperature around the photosensitive drum does not exceed 50 ° C. Image quality is maintained.

As described above, the "saturation temperature" changes depending on the temperature of the outside air in which the image forming apparatus main body is placed. According to an experiment performed by the inventor, when the FM12 and the FM13 are stopped, the “saturation temperature” of the ambient temperature around the photosensitive drum is 50 ° C. when the outside air temperature is higher than 27.5 ° C. It was found that when the outside air temperature was 27.5 ° C. or less, the temperature was lower than 50 ° C.

For this reason, the outside air temperature is set to 27 so that the “saturation temperature” of the ambient temperature around the photosensitive drum does not exceed 50 ° C., that is, the ambient temperature around the photosensitive drum is kept lower than 50 ° C. When the temperature is greater than 0.5 ° C, F
M12 and FM13 are rotated, and when the outside air temperature is 27.5 ° C. or less, the FM12 and FM13 are stopped. As described above, when the outside air temperature is 27.5 ° C. or lower, the rotation of the fan is stopped, so that the power consumption is suppressed as much as possible and the operation noise of the fan is reduced.

It should be noted that the reference temperature at which the FM 12 and the FM 13 are stopped is obtained experimentally, varies according to the configuration of the image forming apparatus, and is not limited to 27.5 ° C.

In place of the mode in which the FM 12 and the FM 13 are stopped, the drive control may be performed in a mode in which the rotation speed is reduced and the motor 13 is rotated to reduce the operation noise. FM12, FM1
How to change each rotation speed of 3
70 may be stored.

Although the description has been given of the change of the drive control of the FM 12 and the FM 13, the present invention is not limited to the change of the drive control of the FM 12 and the FM 13. That is, one of the fans in the apparatus is stopped or decelerated so that the “saturation temperature” of the ambient temperature around the photosensitive drum is 5
As long as the temperature does not exceed 0 ° C., the same drive control as that of the FMs 12 and 13 of this embodiment can be performed for the fan.

The reference temperature is determined and set according to the ambient temperature around the photosensitive drum. Similarly, the reference temperature is determined and set according to the ambient temperature around the heating portion, the ambient temperature around the polygon mirror, and the temperature of the polygon mirror. Is also good.
However, in this case, whether the ambient temperature around the heat generating portion can be maintained within the safety standard and whether the vapor deposition portion of the polygon mirror does not come off are the criteria for determining the reference temperature.

As described above, since the "saturation temperature" of the ambient temperature in the apparatus main body is determined by the outside air temperature, it is only necessary to provide one sensor for detecting the outside air temperature, and it is not necessary to provide a sensor for each heat generating portion. Control becomes possible, the number of sensors can be reduced, and costs can be reduced.

As described above, the change of the fan drive control sequence as shown in FIGS. 7 and 8 is model-like, and is not limited to this model.

Since the temperature sensor 100 may be provided in a place where it is exposed to the outside air, instead of being provided in the main body as in the present embodiment, it is provided on the bottom plate of the main body, which is a place where the user is hard to touch. Is also good.

As described above, the drive sequence of the fan may be automatically changed, or a service switch for selecting the drive sequence may be provided.
A serviceman may determine the use environment temperature and select a fan drive sequence. For example, when the serviceman determines that the outside air temperature is higher than the reference temperature, the serviceman selects the mode for controlling the fan in the basic sequence of FIG. 5, and when the serviceman determines that the outside air temperature is lower than the reference temperature, Selection means may be provided so that a mode for controlling the fan in the drive sequence can be selected. Similarly, it may be possible for the operator to use a user switch.

However, if it is automatically changed, the driving sequence of the fan can be changed according to the change in the outside air temperature, so that the operating noise can be reduced more efficiently.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all modifications within the technical concept of the present invention are possible.

[0063]

As described above, according to the present invention,
Since the drive control mode of the fan can be changed based on the outside air temperature, control according to the environmental temperature in which the image forming apparatus main body is placed can be performed, and the temperature around the photosensitive drum can be changed to a high quality image. The operating noise of the fan can be reduced while maintaining the temperature within the range in which the temperature can be formed.

Further, according to the present invention, since a plurality of fans can be controlled by one temperature detection result, only one temperature sensor is required and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of an image forming apparatus according to an embodiment of the present invention.

FIG. 2 is a diagram showing an arrangement of a fan and a wind direction.

FIG. 3 is a diagram showing an arrangement of a fan and a wind direction.

FIG. 4 is a diagram showing an arrangement of a fan and a wind direction.

FIG. 5 is a diagram showing a basic sequence of fan drive control.

FIG. 6A is a schematic diagram of a temperature sensor in a mounting portion of the temperature sensor. (B) External view of the apparatus viewed from A in FIG.

FIG. 7 is a flowchart illustrating a method of changing a drive control sequence of the fan.

FIG. 8 is a diagram showing a drive control sequence of the fan.

FIG. 9 illustrates a storage medium.

FIG. 10 is a diagram illustrating a relationship between an ambient temperature around a photosensitive drum and the number of copies.

[Explanation of symbols]

Reference Signs List 4 photosensitive drum 24 fixing device 30 polygon scanner 31 polygon mirror 32 motor 33 laser driver 70 ROM 71, 72, 73 circuit board 100 temperature sensor FM1, FM2, FM3, FM4, FM5, FM6, F
M7, FM8, FM9, FM10, FM11, FM1
2, FM13, FM14, FM15, FM16, FM1
7, FM18 fan

Claims (51)

[Claims] 1. An image forming apparatus comprising: a cooling unit; and a drive control unit that controls driving of the cooling unit. The image forming apparatus further includes an outside air temperature detection unit that detects a temperature of outside air, wherein the drive control unit includes An image forming apparatus, wherein the driving of the cooling unit is controlled based on the detection result of the detecting unit. 2. The image forming apparatus according to claim 1, wherein said outside air temperature detecting means is provided so as to come into contact with outside air. 3. The image forming apparatus according to claim 1, wherein the outside air temperature detecting means is provided outside the exterior of the image forming apparatus main body. 4. The image forming apparatus according to claim 3, wherein said outside air temperature detecting means is provided at a bottom of the image forming apparatus main body. 5. The image forming apparatus according to claim 1, wherein a ventilation hole is provided on an exterior of the image forming apparatus main body, and the outside air temperature detecting means is provided so as to close the ventilation hole in the image forming apparatus main body. 3. The image forming apparatus according to 2. 6. The image forming apparatus according to claim 1, further comprising a heat generating unit, wherein the outside air temperature detecting unit is provided separately from the heat generating unit. 7. The image forming apparatus according to claim 1, wherein the cooling unit is a fan. 8. The drive control means can control the fan in a plurality of modes, the plurality of modes include a first mode and a second mode different from the first mode, and are driven in the second mode. 8. The image forming apparatus according to claim 7, wherein the air flow of the fan is smaller than the air flow of the fan driven in the first mode. 9. The drive control means can control the fan in a plurality of modes. The plurality of modes include a first mode and a second mode for driving the fan at a lower rotation speed than the first mode. 9. A device according to claim 7, wherein
An image forming apparatus according to claim 1. 10. The image forming apparatus according to claim 8, wherein the second mode is a mode for stopping a fan. 11. The drive control unit according to claim 8, wherein the drive control unit drives the fan in the second mode when the outside air temperature detection unit detects that the outside air temperature is lower than a predetermined temperature. The image forming apparatus according to claim 1. 12. The image forming apparatus according to claim 1, further comprising an image carrier for carrying a toner image. 13. The image forming apparatus according to claim 1, further comprising a heat generating unit. 14. An image forming apparatus according to claim 13, wherein said heat generating section is a fixing section for fixing an unfixed fixed image on a recording material by heat. 15. The image forming apparatus according to claim 13, wherein the heat generating section is a circuit board. 16. A first cooling unit, a second cooling unit different from the first cooling unit, a temperature detecting unit, and the first cooling unit and the second cooling unit based on a detection result of the temperature detecting unit. And a control unit for controlling the first control unit. The control unit controls the first control unit based on one detection result.
An image forming apparatus controlling a cooling unit and the second cooling unit. 17. The control means is capable of controlling the cooling means in a plurality of modes, and drives the first cooling means in the first mode and the second cooling means based on one detection result.
17. The image forming apparatus according to claim 16, wherein the cooling unit is driven in a second mode different from the first mode. 18. The image forming apparatus according to claim 16, wherein the first cooling unit is a first fan, and the second cooling unit is a second fan. 19. The image forming apparatus according to claim 18, wherein a rotation speed of the second mode fan is lower than a rotation speed of the first mode fan. 20. The image forming apparatus according to claim 18, wherein the control unit rotates the first fan and stops the second fan based on one detection result. 21. The temperature detecting device according to claim 16, wherein said temperature detecting means detects a temperature of outside air.
Item 10. The image forming apparatus according to item 1. 22. The image forming apparatus according to claim 16, further comprising an image carrier for carrying a toner image. 23. The image forming apparatus according to claim 16, further comprising a heat generating section. 24. The image forming apparatus according to claim 23, wherein the heat generating unit is a fixing unit that fixes an unfixed image on a recording material by heat. 25. The image forming apparatus according to claim 23, wherein said heat generating section is a circuit board. 26. A storage medium storing a drive control mode of a fan in an image forming apparatus corresponding to an outside air temperature. 27. A plurality of drive control modes, wherein the plurality of drive control modes include a first mode for rotating the fan at a first rotation speed and a rotation of the fan at a rotation speed lower than the first rotation speed. The storage medium according to claim 26, comprising: a second mode. 28. The storage medium according to claim 27, wherein said second mode is a mode for stopping a fan. 29. An image forming apparatus comprising: an outside air temperature detecting step of detecting an outside air temperature; and a drive control step of driving and controlling a cooling unit based on a detection result detected in the outside air temperature detecting step. A drive control method for a cooling unit provided in the apparatus. 30. The cooling unit is a fan, and the drive control step can control the fan in a plurality of modes, and the plurality of modes include a first mode and a second mode different from the first mode. 30. The method according to claim 29, wherein the air volume of the fan driven in the second mode is smaller than the air volume of the fan driven in the first mode. 31. The cooling unit is a fan, and in the drive control step, the fan can be controlled in a plurality of modes. The plurality of modes include a first mode and a rotation speed lower than the first mode. 30. The drive control method for a cooling unit according to claim 29, further comprising a second mode for driving a fan. 32. The method according to claim 30, wherein the second mode is a mode for stopping a fan. 33. The driving control step, wherein when the outside air temperature is detected to be lower than a predetermined temperature, the driving of the fan is controlled in the second mode.
33. The drive control method for a cooling unit according to any one of 0 to 32. 34. The cooling means is a fan, and in the drive control step, the first fan is stopped and a second fan different from the first fan is rotated based on a detection result detected in the outside air temperature detection step. 30. The drive control method for a cooling unit according to claim 29, wherein the drive control is performed to cause the cooling unit to perform the drive control. 35. A temperature detecting step for detecting a temperature,
An image forming apparatus comprising: a first cooling unit based on one detection result detected in the temperature detection step; and a drive control step of driving and controlling a second cooling unit different from the first cooling unit. A drive control method for the provided cooling means. 36. In the driving control step, the cooling unit can be controlled in a plurality of modes, and based on one detection result, the first cooling unit is driven in the first mode and the second cooling unit is controlled. A second mode different from the first mode
The drive control method for a cooling means according to claim 35, wherein the drive is performed in a mode. 37. The first cooling means and the second cooling means are fans, wherein a rotation speed of the second mode fan is lower than a rotation speed of the first mode fan. 37. The drive control method for a cooling means according to claim 36. 38. The first cooling means and the second cooling means are a first fan and a second fan. In the driving control step, the first cooling means rotates the first fan based on one detection result, and 37. The method according to claim 36, wherein the two fans are stopped. 39. The method according to claim 35, wherein the temperature detecting step is a step of detecting a temperature of outside air.
The drive control method of the cooling means as described in the above. 40. An image comprising: a fan; an outside air temperature detecting unit for detecting a temperature of outside air; and a storage medium storing a drive control mode of the fan corresponding to a detection result of the outside air temperature detecting unit. Forming equipment. 41. There are a plurality of drive control modes. The plurality of drive control modes include a first mode for rotating the fan at a first rotation speed and a rotation of the fan at a rotation speed lower than the first rotation speed. The image forming apparatus according to claim 40, further comprising: a second mode. 42. The image forming apparatus according to claim 41, wherein the second mode is a mode for stopping a fan. 43. An image forming apparatus comprising: a cooling unit; a drive control mode of the cooling unit; and a selection unit for selecting a drive control mode of the cooling unit in accordance with an outside air temperature. . 44. The cooling unit includes a fan, and a drive control mode of the cooling unit includes a first mode for stopping the fan.
The image forming apparatus according to claim 43, further comprising a mode and a second mode for rotating the fan. 45. The cooling unit includes a fan, and the drive control mode of the cooling unit includes a first mode in which the fan rotates at a reduced speed and a second mode in which the fan rotates at full speed. The image forming apparatus according to claim 43. 46. The cooling device, comprising: a first fan and a first fan.
A second fan different from the first fan, and the drive control mode of the cooling means stops the first fan and stops the second fan.
The image forming apparatus according to claim 43, further comprising: a first mode for rotating a fan; and a second mode for rotating the first fan and the second fan. 47. The cooling device, comprising: a first fan and a first fan.
And a second fan different from the first fan. The drive control mode of the cooling unit includes a first mode in which the first fan is rotated at full speed while the first fan is rotated at a reduced speed, and a first mode in which the first fan and the second fan are rotated at full speed. The image forming apparatus according to claim 43, further comprising: a second mode in which the two fans rotate at full speed. 48. The cooling means includes a first cooling means and a second cooling means different from the first cooling means, and the selection mode selected by the selection means is to set the first cooling means to the first mode. A first selection mode for controlling the drive of the second cooling means in the second mode while controlling the drive; and controlling the second cooling means while controlling the drive of the first cooling means in a third mode different from the first mode. 44. A second selection mode in which drive control is performed in the second mode.
The image forming apparatus as described in the above. 49. An image forming apparatus according to claim 48, wherein said cooling means is a fan. 50. The apparatus according to claim 43, wherein the selection by the selection means is performed when an operator or a service person determines that the outside air temperature is lower than the reference temperature.
10. The image forming apparatus according to claim 9. 51. The selection by the selection means when the operator or service person determines that the outside air temperature is higher than the reference temperature.
10. The image forming apparatus according to claim 9.