JP2021048497A - Cleaning instruction device, image formation device, and program - Google Patents

Abstract

To provide a cleaning instruction device, image formation device, and program capable of instructing performance of accurate cleaning in comparison with a uniform instruction of cleaning when the number of documents to be read in a document reading device for reading a document exceeds a predetermined threshold.SOLUTION: A cleaning instruction device includes: counting means for counting the number of documents to be read in a document reader for reading a document; display control means for performing control to display an effect that a cleaning object has to be cleaned when the number of documents counted by the counting means exceeds a predetermined threshold; use state detection means for detecting a use state of an image formation device; and correction means for correcting a count value of the counting means or a threshold of the display control means based on a detection result of the use state detection means.SELECTED DRAWING: Figure 4

Description

The present invention relates to a cleaning instruction device, an image forming device and a program.

Patent Document 1 describes detection of detecting stains on a photoelectric conversion element, an optical system for forming an image of a document on the photoelectric conversion element, and a comparison between an image signal from the photoelectric conversion element and a threshold value. In an image reading device provided with means, the processing means for processing the image signal from the photoelectric conversion element with different gradations, and the detection means according to the gradation in the gradation processing by the processing means. Disclosed is an image reading device comprising a selection means for selecting the threshold value.

Japanese Unexamined Patent Publication No. 2007-173962

INDUSTRIAL APPLICABILITY According to the present invention, when the number of sheets to be read by the document reading device for reading a document exceeds a predetermined threshold value, it is possible to instruct the cleaning to be performed more accurately than the one instructing the cleaning uniformly. It is an object of the present invention to provide a cleaning instruction device, an image forming device and a program.

According to the first aspect of the present invention, a coefficient means for coefficienting the number of documents read by a document reading device for reading a document and a cleaning target when the number of documents coefficiented by the coefficient means exceeds a predetermined threshold value. A display control means for controlling to display the fact that cleaning should be performed, a usage status detection means for detecting the usage status of the image forming apparatus, and a coefficient value of the coefficient means or the display control means based on the detection result of the usage status detection means. It is a cleaning instruction device having a correction means for correcting the threshold value of the above.

According to the second aspect of the present invention, the usage status detecting means is the cleaning instruction device according to claim 1, which detects the usage status of the document reading device.

According to the third aspect of the present invention, the usage status detecting means is the cleaning instruction device according to the second aspect, which detects the size of a document read by the document reading device.

According to the fourth aspect of the present invention, the usage status detecting means is the cleaning instruction device according to the second aspect, which detects the type of a document read by the document reading device.

According to the fifth aspect of the present invention, the usage status detecting means is the cleaning instruction device according to claim 2, which detects a method of reading a document read by the document reading device.

According to the sixth aspect of the present invention, the usage status detecting means is the cleaning instruction device according to the second aspect, which detects the amount of data of a document read by the document reading device.

According to the seventh aspect of the present invention, the usage status detecting means is the cleaning instruction device according to claim 1, which detects the usage status of the main body of the image forming apparatus that forms an image on a recording medium.

The cleaning instruction device according to claim 8, wherein the usage status detecting means is the cleaning instruction device according to claim 7, which detects whether the image forming apparatus main body is set to either black-and-white printing or color printing. ..

According to the ninth aspect of the present invention, the usage status detecting means is the cleaning instruction device according to the seventh aspect, which detects the density setting of the image forming apparatus main body.

According to the tenth aspect of the present invention, the usage status detecting means is the cleaning instruction device according to the seventh aspect, which detects the type of recording medium to be supplied.

According to the eleventh aspect of the present invention, the usage status detecting means is the cleaning instruction device according to the seventh aspect, which detects the type of the recording medium accommodating portion accommodating the recording medium.

According to the twelfth aspect of the present invention, the usage status detecting means is the cleaning instruction device according to the second aspect, which detects a jamming state of a document in the reading device.

According to the thirteenth aspect of the present invention, the cleaning instruction according to claim 2, wherein the reading device has an opening / closing cover that opens / closes with respect to the object to be cleaned, and the usage status detecting means detects the opening / closing status of the opening / closing cover. It is a device.

The cleaning instruction device according to claim 14, wherein the usage status detecting means is the cleaning instruction device according to claim 7, which detects a clogging status of a recording medium in the image forming apparatus main body.

The present invention according to claim 15 has a document reading device for reading a document, an image forming unit for printing an image on a recording medium, a coefficient means for multiplying the number of documents read by the document reading device, and a coefficient by the coefficient means. A display control means for controlling to display that the object to be cleaned should be cleaned when the number of printed documents exceeds a predetermined threshold, and a usage status for detecting the usage status of the document reading device or the image forming unit. An image forming apparatus including a detection means and a correction means for correcting a coefficient value of the coefficient means or a threshold value of the display control means based on a detection result of the usage status detection means.

The present invention according to claim 16 states that a step of coefficienting the number of documents to be read by a document reading device for reading a document and that the object to be cleaned should be cleaned when the coefficiented number of documents exceeds a predetermined threshold. It is a program for causing a computer to execute a step of controlling display, a step of detecting a usage status of an image forming apparatus, and a step of correcting a coefficient value or a threshold value according to the usage status of the image forming apparatus.

According to the present invention according to claim 1, 15 or 16, when the number of sheets to be read by the document reading device for reading a document exceeds a predetermined threshold value, the accuracy is higher than that for uniformly instructing cleaning. You can instruct them to clean well.

According to the second aspect of the present invention, in addition to the effect of the present invention according to the first aspect, it can be corrected depending on the usage status of the document reading device.

According to the third aspect of the present invention, in addition to the effect of the present invention according to the second aspect, the size of the original document read by the original document reader can be used for correction.

According to the fourth aspect of the present invention, in addition to the effect of the present invention according to the second aspect, correction can be made depending on the type of the original document read by the original document reader.

According to the fifth aspect of the present invention, in addition to the effect of the present invention according to the second aspect, it can be corrected by the method of reading the original.

According to the sixth aspect of the present invention, in addition to the effect of the present invention according to the second aspect, it can be corrected by the amount of data of the manuscript.

According to the seventh aspect of the present invention, in addition to the effect of the present invention according to the first aspect, it can be corrected depending on the usage status of the image forming unit.

According to the eighth aspect of the present invention, in addition to the effect of the present invention according to the seventh aspect, the correction can be made by setting the black and white color of the image forming portion.

According to the ninth aspect of the present invention, in addition to the effect of the present invention according to the seventh aspect, it can be corrected by setting the density of the image forming portion.

According to the tenth aspect of the present invention, in addition to the effect of the present invention according to the seventh aspect, correction can be made depending on the type of recording medium.

According to the eleventh aspect of the present invention, in addition to the effect of the present invention according to the seventh aspect, it can be corrected by the type of the recording medium accommodating portion.

According to the twelfth aspect of the present invention, in addition to the effect of the present invention according to the second aspect, it can be corrected depending on the clogging of the original.

According to the thirteenth aspect of the present invention, in addition to the effect of the present invention according to the second aspect, it can be corrected by the opening / closing state of the opening / closing cover.

According to the 14th aspect of the present invention, in addition to the effect of the present invention according to the 7th aspect, it can be corrected depending on the clogging state of the recording medium.

It is a schematic side view which shows the image forming apparatus which concerns on 1st Embodiment of this invention. It is a side sectional view which shows the image forming part in the image forming apparatus which concerns on 1st Embodiment of this invention. It is a block diagram which shows the main control part of the image forming apparatus which concerns on 1st Embodiment of this invention. It is a sequence diagram which shows the control flow in the image forming apparatus which concerns on 1st Embodiment of this invention. It is a chart for demonstrating the 2nd to 11th Embodiment of this invention. It is a sequence diagram which shows the 1st part of the specific example 4 which concerns on this invention. It is a sequence diagram which shows the 2nd part of the specific example 4 which concerns on this invention. It is a sequence diagram which shows the 3rd part of the specific example 4 which concerns on this invention. It is a sequence diagram which shows the 4th part of the specific example 4 which concerns on this invention. It is a sequence diagram which shows the 5th part of the specific example 4 which concerns on this invention. It is a sequence diagram which shows the 6th part of the specific example 4 which concerns on this invention.

Next, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic side view showing an image forming apparatus 10 according to the first embodiment of the present invention.

The image forming apparatus 10 includes an image forming apparatus main body 12, an image reading device 14, and a user interface 15.
The image forming apparatus main body 12 has, for example, five recording medium accommodating units 16a to 16e, and the recording medium is sent out from the selected recording medium accommodating units 16a to 16e. The four recording medium accommodating units 16a to 16d are built in the image forming apparatus main body 12, and recording media having different sizes and characteristics are laminated and accommodated in the four recording medium accommodating units 16a to 16d. There is. Further, the other recording medium accommodating portion 16e is a manual feeding accommodating portion, which is opened to the outside of the image forming apparatus main body portion 12 to accommodate the recording medium.

The image forming unit 18 is provided above the four recording medium accommodating units 16a to 16d. The image forming unit 18 has an intermediate transfer body 20 and, for example, four image forming units 22.

The image forming unit 22 has an image holder 24 as shown in FIG. The image holder 24 is, for example, a photoconductor, and a charger 26, an exposure device 28, a developing device 30, and a cleaning device 31 are arranged around the image holder 24. The image holder 24 is charged by the charger 26, exposed by the exposure device 28 to form a latent image, developed by the developing device 30, and the developed toner image is transferred to the intermediate transfer body 20 by the primary transfer roll 32. Primary transcription. The toner image transferred to the intermediate transfer body 20 is transferred to the recording medium by the secondary transfer roll 34.

The recording medium accommodating portions 16a to 16e described above are provided with a delivery roll 36 driven by a delivery motor (not shown), and the highest-level recording medium accommodated in the recording medium accommodating portions 16a to 16e by the rotation of the delivery roll 36. Is sent out from the recording medium accommodating units 16a to 16e. The sent out recording medium is conveyed to the main transfer path 40 by a plurality of transfer rolls 38 driven by a transfer motor (not shown). Further, the main transport path 40 is provided with a resist roll 44 driven by a resist motor (not shown). The resist roll 44 suspends the recording medium, corrects the deviation of the recording medium, and conveys the recording medium between the intermediate transfer body 20 and the secondary transfer roll 34 at the same timing.

The fixing device 46 is arranged on the wake side of the secondary transfer roll 34 so as to fix the toner image of the secondary transfer recording medium on the recording medium. The recording medium on which the toner image is fixed is discharged to any of the plurality of recording medium discharge units 48. However, when an image is formed on both sides of the recording medium, the image is conveyed to the reverse transfer path 50 and returned to the resist roll 44 again.

The image reading device 14 is provided above the image forming device main body 12. The image reading device 14 includes an automatic document feeding device 52 and a reading unit 56 that reads a document fed by the automatic document feeding device 52 or a document arranged on a platen glass 54.

The automatic document feeder 52 includes a document loading section 58 for loading a bundle of documents composed of a plurality of documents, and a paper ejection storage section 60 provided below the recording medium storage section 58 for loading a recording medium that has been read. And. Further, the automatic document feeding device 52 includes a feeding roll 62 that takes out and conveys the document of the document placing unit 58. Further, a handling mechanism 64 for handling the originals one by one is provided on the downstream side of the take-out roll 62 in the document conveying direction. The document transport path 66 for transporting documents is provided with transport rolls 68, 70, platen rolls 72, transport rolls 74, and discharge rolls 76 in this order from the upstream side in the document transport direction. The platen roll 72 presses the document being read by the reading unit 56 against the platen glass 54 from above. The discharge roll 76 further conveys the read document and discharges it to the paper discharge storage unit 60.

The automatic document feeder 52 detects the document size while it is placed on the document loading unit 58, or detects the document size during the transfer of the document transfer path 60.

An image reading unit 80 is arranged below the platen glass 54. The image reading unit 80 stands still below the platen roll 76, reads a document fed by the automatic document feeder 52 (referred to as an automatic document feed mode), or moves along the platen glass 54 and onto the platen glass 48. It is designed to read the placed document (called platen mode).

In the first embodiment, the automatic document feeder 52 conveys only one side of the document to the reading unit 56, but the document is inverted so that both sides of the document are read by the reading unit 56. You may do so. Further, image sensors may be provided on both sides so that both sides of the conveyed document can be read at once.

The automatic document feeder 52 also serves as an opening / closing cover 82 for opening and closing the platen glass 54 of the reading unit 56. By opening the opening / closing cover 82, the document can be placed on the platen glass 54, and by closing the opening / closing cover 82, the automatic document feeding mode is set and dust and the like are prevented from adhering to the platen glass 54. To do. Further, an open / close detection unit (not shown) for detecting the open / close of the open / close cover 82 is provided.

The user interface 15 is an operation display device that accepts user settings and displays setting information and the like to the user. The user interface 15 is configured by combining, for example, a liquid crystal display panel with a touch panel. The user inputs the setting data through the user interface 15. For example, reading resolution, double-sided single-sided, reading magnification, black-and-white color, original type (text, photo, etc.), print density, recording medium type (high-quality paper, plain paper, recycled paper, etc.), selection of recording medium storage, etc. Is.

FIG. 3 shows a block diagram of the main control unit 84 of the image forming apparatus 10 according to the embodiment of the present invention.

The main control unit 84 has a system unit 86 that controls the entire system and a job management unit 88 that manages jobs, and data is transmitted and received between the system unit 86 and the job management unit 88. Further, the job management unit 88 transmits / receives data to / from the user interface 15 described above. Here, the job refers to a series of processes from the start to the end. For example, in the case of a copy job, the job is a process of reading a document and forming an image on a recording medium.

FIG. 4 is a sequence diagram showing an operation flow of the image forming apparatus 10 according to the embodiment of the present invention.

First, in step S10, the user sets the number of reading sheets that need to be cleaned via the user interface 15, and stores the reading number information that needs cleaning in the system unit 86 as the reading number threshold value.

Further, in the platen mode, the user opens and closes the opening / closing cover 82 described above in step S12. In the next step S14, the image reading device 14 detects that the opening / closing cover 82 has been opened / closed, and notifies the job management unit 88. In the next step S16, the job management unit 88 acquires the number of sheets to be read from the image reading device 14. In the next step S18, the job management unit 88 coefficient the number of read sheets and further correct the number of read sheets so as to add 3 to the number of read sheets as a correction value due to the opening / closing of the open / close cover 82.
In the automatic document feed mode, no correction is performed.

In the next step S20, the job management unit 88 acquires the read number threshold value from the system unit 86, and in the next step S22, compares the corrected read number value with the read number threshold value.

Here, if it is determined that the number of read sheets is larger than the threshold value, in step S24, the job management unit 88 sends an e-mail to the user to the effect that the number of read sheets is larger than the threshold value. Further, in step S26, the job management unit 88 notifies the user interface 15 to give a cleaning start instruction, and in the next step S28, determines whether or not the user who sees this notification performs cleaning. ..

That is, the user interface 15 displays, for example, "The platen glass may be dirty" and displays a cleaning completion button and a next cleaning button so that the user can select them. When the user presses either the cleaning complete button or the next cleaning button, the process ends.

In the above embodiment, the number of readings is corrected by the opening / closing operation of the opening / closing cover 82, but the opening time of the opening / closing cover 82 may be included as a correction parameter.

Further, a specific example will be described.

Specific example 1:
The setting of the image forming apparatus 10 is that the condition for notifying the platen glass cleaning is "when the number of originals read reaches 500 or more".
The operation is performed as follows.
1. 1. The user opens and closes the opening / closing cover 82. 2. Detects opening and closing and sets the number of documents read to +3. Read 495 manuscripts. The number of documents to be read will be 498. 4. Open and close the open / close cover 82. Since opening and closing is detected and the number of documents read is +3, the number of documents read is 501. Since the number of documents to be read has reached 500 or more, it is displayed on the user interface or notified to the administrator by e-mail in order to encourage the user to clean the glass.
(After cleaning, the number of scanned documents will be cleared.)

Specific example 2:
The setting of the image forming apparatus 10 is the same as that of the first embodiment.
The operation is performed as follows.
1. 1. The user opens the open / close cover 82. 400 copies of a document are made with the open / close cover 82 open (for example, the open / close cover 82 is open because a book has been copied).
3. 3. When the open / close cover 82 is open, dust and the like are likely to enter, so one reading is set to 1.5.
4. When the number of documents read exceeds 500 during copying, the administrator is notified by e-mail that cleaning should be performed. Since it interferes with the copying operation, the screen of the user interface 15 does not indicate that cleaning should be performed during copying.
5. When the copy is completed, it is displayed on the user interface 15 to prompt the platen glass to be cleaned.

Specific example 3:
The setting of the image forming apparatus 10 is the same as that of the first embodiment.
The operation is performed as follows.
1. 1. The user opens the open / close cover 82. If the cover is left open without copying or the like, the number of originals read is 10 in 10 seconds and is added to the number of originals read so far.
3. 3. If 500 seconds have passed with the open / close cover 82 open, the number of originals read will be 500 even if the number of originals read up to that point is 0, and a message indicating that the platen glass is to be cleaned is displayed on the user interface or electronically. Notify the administrator by email.

In the first embodiment, the cleaning instruction of the platen glass 54 is displayed on the user interface 15 as a notification method, and the administrator is notified by e-mail. However, either one is selected. Can also be set.

Further, in the first embodiment, the administrator of the image forming apparatus is set as the destination of the e-mail, but the following can also be performed.
1. 1. When the number of documents to be read exceeds the threshold value, the user who is authenticated and used at that time is notified.
2. The notification destination can be registered in advance, and when the number of documents to be read exceeds the threshold value, the registration destination is notified.
3. 3. Search the job history for users who frequently read documents and notify the superiors.
4. Notify predetermined users in order so as not to concentrate on one user.

Further, in the first embodiment, the notification is given when the number of scanned documents exceeds the threshold value, but when displaying on the user interface, not only when the number of scanned documents exceeds the threshold value, but also a job. If it is inside, it may be displayed at the end of the job without displaying it, and if the display of the platen glass cleaning instruction is erased, it may be displayed again at the start of the job to read the original such as copy. You may.

Next, the second to eleventh embodiments will be described with reference to FIG.

In the second embodiment, the weighting of the correction is changed according to the size of the document read by the image reading device 14. Since the larger the original size, the more stains are attached to the original, the larger the original size, the larger the weighting. For example, if the document size is A5, the weighting is 0.5, if the document size is A4, the weighting is 1, and if the document size is A3, the weighting is 1.5.

In the third embodiment, the weighting of the correction is changed depending on the type of the document read by the image reading device 14. When the manuscript is set to text, the number of print dots of the manuscript is small because it is only characters, in the case of a photo, the number of print dots of the manuscript is large, and in the case of text / photo, the text and photo are mixed, so the manuscript The number of print dots in is between the two. Whether it is a text, a text / photograph, or a photograph may be set by the user by the user interface 15, or may be analyzed and determined from the scanned document. For example, in the case of text, the weight is 0.5, in the case of text / photo, the weight is 1, and in the case of photo, the weight is 1.5.

In the fourth embodiment, the weighting of the correction is changed depending on the method of reading the document to be read by the image reading device 14. Since it is once when the original is read on only one side and twice when the original is read on both sides, dust and the like are more likely to be generated when the original is read on both sides than when the original is read on one side. For example, the weight for one side is 1, and for both sides it is 1.5.

In the fifth embodiment, the weighting of the correction is changed according to the read data size. The scanned data size is determined from the file size of the scanned document. This is because the larger the image data size read at one time, the larger the amount of toner and ink used at the time of output, so that the platen glass can be predicted by the degree of accumulation of the data amount. Weighting will be described in a specific example described later.

In the sixth embodiment, as in the fifth embodiment, the weighting of the correction is changed according to the read data size, but it is changed depending on the combination with the copy setting. That is, the color setting (referred to as color mode) is more likely to be soiled than the case of setting to black and white or grayscale (referred to as black and white mode). For example, the weighting in the black-and-white mode is 1, the weighting in the color mode is 1.5, and so on.

In the seventh embodiment, the weighting of the correction is changed according to the density at the time of printing set as the default. If the density to be printed is set high, it is expected that the original to be copied is also printed at a high density, and the higher the density at the time of printing, the more likely it is that stains will appear. For example, when the density can be set in 6 steps, the weighting of the correction when "thin 3" and "thin 2" is 0.5, and the weighting of the correction when "thin 1", "normal" and "dark 1" is 1, The weighting of the correction when "dark 2" and "dark 3" is set to 1.5.

In the eighth embodiment, the weighting of the correction is changed according to the type of the recording medium set as the default (or the type of the recording medium set at the time of the latest printing). This is because if the type of recording medium is set to, for example, recycled paper, it is expected that the original to be copied is also recycled paper, so that stains are likely to occur. For example, the weighting for high-quality paper is 0.5, the weighting for plain paper is 1, and the weighting for recycled paper is 1.5. As for the type of recording medium, the type of recording medium is registered in advance for each of the recording medium accommodating units 16a to 16d.

In the ninth embodiment, the weighting of the correction is changed by the recording medium accommodating portion. As described above, the recording medium accommodating portions 16a to 16d are built-in accommodating portions, and the recording medium 16e is a manual feeding accommodating portion. This is because dust and the like are more likely to adhere to the recording medium in the manual recording medium accommodating portion 16e than in the built-in recording medium accommodating portions 16a to 16d. For example, the weighting when the recording medium accommodating units 16a to 16d are selected and printed is 1, the weighting when the recording medium accommodating units 16d are selected and printed is 1.5, and so on.

A tenth embodiment is a case where the recording medium is clogged in the image forming apparatus main body 12 (referred to as jamming), and for example, 10 images are added for each jamming time. At the time of jam, it is necessary to release the jammed recording medium, but in that case, it is considered that paper scraps are generated due to the wear of the recording medium and remain in the image forming apparatus main body 12.

The eleventh embodiment is a case where the opening / closing cover 82 is opened due to some trouble. For example, five covers are added each time the opening / closing cover 82 is opened. This is because when the opening / closing cover 82 is opened, it is considered that dust or the like in the air enters the image forming apparatus main body 12 or the document reading apparatus 14.

The present invention is not limited to the first to eleventh embodiments, as long as the number of originals or the threshold value is changed depending on the usage status of the image forming apparatus 10, for example, image forming. It may be changed depending on the installation location of the device 10 (for example, an office or a factory, or a factory is more likely to generate dust than an office).

Next, a specific example 4 will be described.

6 to 11 show the operation flow of the specific example 4.
In the specific example 4, in the setting of the image forming apparatus 10, the type of the recording medium is recycled paper in the color mode, the file size of the original is 40 MB (megabytes), and the condition for notifying the platen glass cleaning is "Original reading". When the number of sheets becomes 500 or more. "

First, in step S30, the user presses the read job button of the user interface 15. The number of read sheets stored in the system unit 86 before the reading job button is pressed is 495.

In the next step S32, the user interface 15 requests the job management unit 88 to execute the read job. Here, the number of sheets to be read is one, and the color mode is used. In the next step S34, the job management unit 88 instructs the system unit 86 to create a read job. In the next step S36, the job management unit 88 requests the system unit 86 to acquire information on the type of recording medium from the latest print job history. As described in the eighth embodiment described above, the weighting for high-quality paper is 0.5, the weighting for plain paper is 1, and the weighting for recycled paper is 1.5. In step S38, the system unit 86 notifies the job management unit 88 that the recording medium is recycled paper.

In the next step S40, the job management unit 88 coefficients a coefficient of +3 as the number of read sheets. That is, since it is a color mode and recycled paper, 1.5 + 1.5 = 3.

In the next step S42, the system unit 86 instructs the system unit 86 to add 3. In the next step S44, the system unit 86 adds 3 to the number of sheets read up to the previous time. Here, the number of sheets to be read is 498.

In the next step S46, the job management unit 88 requests the system unit 86 to acquire the number of readings. In the next step S48, the system unit 86 notifies the job management unit 88 of a new number of readings. Here, it is 498 sheets.

In the next step S50, the job management unit 88 compares the number of readings with the threshold value. Since the number of sheets to be read is 498 and the threshold value is 500, the number of sheets to be read does not exceed the threshold value here. Therefore, in the next step S52, the job management unit 88 asks the system unit 86 for the reading job. Instruct execution.

In the next step S54, the system unit 88 instructs the reading control unit 90 to read the document. In the next step S56, the reading control unit 90 gives an operation instruction to the image reading device 14 to read the document.

In the next step S58, the image reading device 14 notifies the reading control unit 90 of the completion of reading, and in the next step S60, the reading control unit 90 notifies the system unit 86 of the completion of reading. Further, in the next step S62, the system unit 86 notifies the job management unit 88 of the completion of the read job.

In the next step S64, the job management unit 88 requests the system unit 86 to acquire the file size of the scanned document. In the next step S66, the system unit 86 notifies the job management unit 88 of the file size. Here, it is 40 MB.

In the next step S68, the job management unit 88 determines the number of sheets to be read from the mode and the file size, as shown in FIG. Here, since it is a color mode and the face size is 40 MB, in step S68, 1.5 × 2 = 3, and the number of read sheets is three. In the next step S70, the job management unit 88 requests the system unit 86 to add three as the number of read sheets. In the next step S72, the job management unit 88 requests the system unit 86 to acquire the number of readings. In the next step S74, the system unit 86 adds a new number of readings to the current number of readings. Here, 498 + 3 = 501, and the new number of reads is 501.

In the next step S74, the job management unit 88 compares the number of read sheets with the threshold value. Since the threshold value is 500 and the number of read sheets is 501, the number of read sheets exceeds the threshold value. In the next step S76, the job management unit 88 notifies the user interface 15 that the number of sheets to be read exceeds the threshold value. In the next step S78, the user interface 15 displays, for example, "The platen glass may be dirty" and displays a cleaning complete button and a next cleaning button so that the user can select them. ing. Further, in step S80, the job management unit 88 resets the number of read sheets. When the user presses either the cleaning complete button or the next cleaning button, the process ends.

In the first to eleventh embodiments described above, the object to be cleaned has been described as platen glass, but the present invention is not limited to this, and the image sensor provided in the automatic document feeder or the reading unit is the object of cleaning. May be good. Moreover, although it has been described that the number of reading sheets is corrected, the threshold value may be corrected. Furthermore, when the number of originals exceeds a predetermined threshold, it is displayed that the object to be cleaned should be cleaned. However, even when the number of originals exceeds a predetermined threshold, for example, a blank sheet of paper is displayed. It may be read to confirm that the platen glass is actually dirty, and then an indication that cleaning should be performed may be displayed.

10 Image forming device 12 Image forming device main body 14 Image reading device 15 User interface 16a to 16e Recording medium accommodating part 18 Image forming unit 20 Intermediate transfer unit 22 Image forming unit 24 Image holder 26 Charger 28 Exposure device 30 Developing device 31 Cleaning device 32 Primary transfer roll 34 Secondary transfer roll 36 Feed roll 38 Transport roll 40 Main transport path 44 Resist roll 46 Fixing device 48 Recording medium ejection unit 50 Inverted transport path 52 Automatic document feeder 54 Platen glass 56 Reading unit 58 Document loading Placement 60 Paper discharge accommodating unit 62 Feeding roll 64 Handling handling mechanism 66 Document transport path 68, 70, 74 Transport roll 72 Platen roll 76 Discharge roll 80 Image reading unit 84 Main control unit 86 System unit 88 Job management unit 90 Reading control unit

Claims (16)

Coefficient means for coefficienting the number of sheets to be read in a document reading device for reading a document, and
A display control means for controlling so as to indicate that the object to be cleaned should be cleaned when the number of documents coefficiented by the coefficient means exceeds a predetermined threshold value.
Usage status detection means for detecting the usage status of the image forming device,
A correction means for correcting the coefficient value of the coefficient means or the threshold value of the display control means based on the detection result of the usage status detecting means.
Cleaning instruction device with. The cleaning instruction device according to claim 1, wherein the usage status detecting means detects the usage status of the document reading device. The cleaning instruction device according to claim 2, wherein the usage status detecting means detects the size of a document read by the document reading device. The cleaning instruction device according to claim 2, wherein the usage status detecting means detects the type of a document read by the document reading device. The cleaning instruction device according to claim 2, wherein the usage status detecting means detects a method of reading a document read by the document reading device. The cleaning instruction device according to claim 2, wherein the usage status detecting means detects the amount of data of a document read by the document reading device. The cleaning instruction device according to claim 1, wherein the usage status detecting means detects the usage status of the main body of the image forming apparatus that forms an image on a recording medium. The cleaning instruction device according to claim 7, wherein the usage status detecting means detects whether the image forming apparatus main body is set to either black-and-white printing or color printing. The cleaning instruction device according to claim 7, wherein the usage status detecting means detects a density setting of the image forming apparatus main body. The cleaning instruction device according to claim 7, wherein the usage status detecting means detects the type of recording medium to be supplied. The cleaning instruction device according to claim 7, wherein the usage status detecting means detects the type of the recording medium accommodating portion accommodating the recording medium. The cleaning instruction device according to claim 2, wherein the usage status detecting means detects a jamming status of a document in the reading device. The cleaning instruction device according to claim 2, wherein the reading device has an opening / closing cover that opens / closes with respect to the object to be cleaned, and the usage status detecting means detects the opening / closing status of the opening / closing cover. The cleaning instruction device according to claim 7, wherein the usage status detecting means detects a clogging status of a recording medium in the main body of the image forming apparatus. A document reader that reads documents and
An image forming unit that prints an image on a recording medium,
Coefficient means for coefficienting the number of documents read by the document reading device, and
A display control means for controlling so as to indicate that the object to be cleaned should be cleaned when the number of documents coefficiented by the coefficient means exceeds a predetermined threshold value.
A usage status detecting means for detecting the usage status of the document reading device or the image forming unit, and
A correction means for correcting the coefficient value of the coefficient means or the threshold value of the display control means based on the detection result of the usage status detecting means.
An image forming apparatus having. A step of coefficienting the number of sheets to be read by a document reading device for reading a document, and
A step of controlling to display that the cleaning target should be cleaned when the coefficiented number of original sheets exceeds a predetermined threshold value, and
Steps to detect the usage status of the image forming device and
Steps to correct the coefficient value or threshold value depending on the usage status of the image forming apparatus,
A program that lets your computer run.

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