JP2013157840A - Image processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image processing device that can resume a job if once a power key is depressed.SOLUTION: An image processing device comprises: output means which outputs image data read out from paper or outputs received image data to paper; detection means which detects an instruction to switch off; transport means which, if the detection means has detected the instruction to switch off, stops transport of subsequent paper which is next paper and completes transport of precedent paper which was transported before the subsequent paper; determination means for determining whether the instruction to switch off is cancelled or not; and control means which, if the determination means has determined that the instruction to switch off is cancelled, performs control to resume reading out from the subsequent paper or outputting to the subsequent paper by having the transport means resume transporting the subsequent paper, and if the determination means has determined that the instruction to switch off is not cancelled, the control means performs control to complete transportation of the precedent paper and then switch off.

Description

  The present invention relates to an image processing apparatus. More specifically, the present invention relates to an image processing apparatus capable of instructing power off by pressing a power key.

  2. Description of the Related Art Conventionally, it has been widely performed to perform a process of turning off a power source by pressing a power key to cut off power supply to a part of the image processing apparatus.

JP2010-120322A

  Conventionally, there is a case where the power-off is instructed by pressing the power key during the execution of the job. In this case, it is necessary to stop the conveyance of the paper. However, once the conveyance of the paper is stopped by pressing the power key, there is a problem that even if the power is turned off, the job is ended in the middle. In this case, it is necessary to execute the job again from the beginning to complete the job, which is inconvenient.

  SUMMARY An advantage of some aspects of the invention is that it provides an image processing apparatus capable of resuming a job even if a power key is pressed once.

  In order to achieve this object, an image processing apparatus according to a first aspect of the present invention detects an output means for outputting image data read from paper or outputting received image data to paper, and a power-off instruction. When the detection unit and the detection unit detect a power-off instruction, the conveyance of the succeeding sheet, which is the next sheet, is stopped, and the conveyance of the preceding sheet, which is the sheet conveyed before the succeeding sheet, is completed. Conveying means, determining means for determining whether or not the power-off instruction has been canceled, and when the determining means determines that the power-off instruction has been canceled, the conveying means conveys the succeeding paper. After resuming reading from the succeeding paper or outputting to the succeeding paper, and when the determining means determines that the power-off instruction has not been canceled, after completing the transport of the preceding paper And control means for performing control to turn off the power.

  According to the first aspect, when the power-off is instructed, the conveyance of the succeeding paper is stopped, the conveyance of the preceding paper is completed, and when the power-off instruction is canceled, the conveyance of the subsequent paper is resumed. Thus, reading from the succeeding sheet or outputting to the succeeding sheet can be resumed. If the instruction to turn off the power is not canceled, the power can be turned off after the conveyance of the preceding sheet is completed.

  The image processing apparatus according to a second aspect of the invention determines that the power-off instruction is canceled when the power-off instruction detected by the detection means does not continue for a specified time. When the power-off instruction detected by the detection means continues for a specified time, it is determined that the power-off instruction has not been canceled.

  According to the second invention, when the power-off instruction is not continued for a specified time, it is determined that the power-off has been canceled, so that reading or output can be resumed without turning off the power when the button is pressed by mistake. Be expected.

  The image processing apparatus according to a third aspect of the present invention is the image processing apparatus according to the third aspect, wherein when the detection unit does not detect a power-off instruction after the conveyance unit completes conveyance of the preceding paper, the determination unit If it is determined that the instruction is canceled and the detection unit detects a power-off instruction after the conveyance unit completes the conveyance of the preceding paper, it is determined that the power-off instruction is not canceled. It is characterized by that.

  According to the third aspect, when the power-off instruction is detected after the preceding paper has been transported, it is determined that the power-off cancellation is not instructed, and therefore the user has completed the transport. After confirming, you can turn off the power.

  The image processing apparatus according to a fourth aspect of the present invention is the image processing apparatus, wherein when the detection unit detects a power-off instruction, if there is no subsequent sheet to be conveyed, the conveyance of the preceding sheet is completed. The power supply is turned off after being turned on.

  According to the fourth aspect of the invention, when there is no subsequent sheet to be transported, it is unlikely that the job will be terminated halfway even when the power is turned off, and the user's intention to turn off the power is reflected. The possibility of being able to be increased.

  In the image processing apparatus according to the fifth invention, the output means outputs the received image data to paper, and when there is uncompleted image data, the power-off instruction is canceled. In this case, the image data that has not yet been output is output again.

  According to the fifth aspect, when printing is resumed, printing is performed again from image data that has not been printed, so that the job can be completed.

  In the image processing apparatus according to the sixth aspect of the invention, the output means outputs image data to both the first side and the second side of the paper, and to the first side of the preceding paper. When the power-off instruction is canceled after the conveyance is completed in a state where the image data is output, the image data output on the first surface of the preceding paper is output.

  According to the sixth aspect of the present invention, when the output to both sides is incomplete when the conveyance is resumed, the output to both sides is completed by outputting again the image data that has not been output to both sides. Can be made.

  According to the present invention, an image processing apparatus capable of canceling power off and restarting a job even after paper conveyance is once stopped by pressing a power key is realized.

1 is a perspective view showing an appearance of an MFP according to an embodiment. FIG. 2 is a perspective view showing a state where an ADF of the MFP shown in FIG. 1 is opened. FIG. 2 is a cross-sectional view showing an internal configuration (AA cross section of FIG. 1) of the image reading unit of the MFP shown in FIG. 1. 2 is a cross-sectional view illustrating a configuration of an image forming unit of the MFP. FIG. 1 is a block diagram showing an electrical configuration of an MFP according to an embodiment. 6 is a flowchart illustrating a copy processing procedure according to the first embodiment. It is a flowchart which shows the procedure of the output process in 1st Embodiment. 10 is a flowchart illustrating a copy processing procedure according to the second embodiment. It is a flowchart which shows the procedure of the output process in 2nd Embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an image processing apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. In the present embodiment, the present invention is applied to a multi-function peripheral (MFP) having a scan function, a print function, and a FAX transmission / reception function.

[MFP configuration]
As illustrated in FIG. 1, the MFP 100 according to the present embodiment includes an image forming unit 51 (an example of an output unit) that prints an image on a sheet, and an image reading unit 52 that reads an image of a document. The image forming method of the image forming unit 51 may be an electrophotographic method or an ink jet method. Further, the image forming unit 51 may be capable of forming a color image and a monochrome image, or may be capable of forming only a monochrome image. Further, the image reading unit 52 may be capable of reading a color image and a monochrome image, or may be capable of reading only a monochrome image.

  Further, the MFP 100 has an operation panel 40 including a button group 41 including various buttons (for example, a power key 43, up / down / left / right keys, and numeric keypad buttons) and a display unit 42 including a liquid crystal display on the front side. It has. In the MFP 100, the button group 41 and the display unit 42 can display an operation status and input a user operation.

[Configuration of Image Reading Unit]
Next, the configuration of the image reading unit 52 will be described with reference to FIGS. 1, 2, and 3. 1 and 2 show the appearance of the image reading unit 52, and FIG. 3 shows the internal configuration of the image reading unit 52.

  The image reading unit 52 includes a main body unit 10 that reads an image and an automatic document feeder (ADF) 20 that automatically conveys a document. The ADF 20 is located above the main body 10 and has one side connected to the main body 10 so as to be rotatable with respect to the main body 10. Therefore, the ADF 20 can open and close the upper surface of the main body 10 (see FIG. 2). The ADF 20 also serves as a cover that covers the upper surface of the main body 10.

  The main body 10 includes contact glasses 11 and 12 on the upper surface thereof. Further, an image sensor 15 that reads an image of a document is provided inside the main body 10 and below the contact glasses 11 and 12. In the image sensor 15, optical elements are arranged in a line in the main scanning direction (a direction orthogonal to the paper conveyance direction, the depth direction in FIG. 3), and the reflected light from the document is converted into an electrical signal and output. As the image sensor 15, for example, a contact image sensor (CIS) or a charge coupled device (CCD) is applicable.

  The image sensor 15 is slidably supported with respect to the slide shaft 13. The slide shaft 13 extends in the sub-scanning direction (left-right direction in FIG. 3), and both ends are fixed to the housing of the main body unit 10. Therefore, the image sensor 15 is provided so as to be movable in the left-right direction in FIG.

  The ADF 20 includes a document tray 21 on which a document before reading is placed and a discharge tray 22 on which the document after reading is placed. Specifically, the document tray 21 is disposed above the discharge tray 22.

  In addition, a substantially U-shaped transport path 60 that connects the document tray 21 and the discharge tray 22 is provided inside the ADF 20 as a path for transporting the document. Various conveyance rollers (an example of a conveyance unit) including a carry-in roller 61, a main roller 62, and a discharge roller 63 are provided in the conveyance path 60 from the upstream side in the document conveyance direction.

  The ADF 20 is provided with an opening 23 on the lower surface thereof, and the document pressing plate 24 is exposed from the opening 23. The document pressing plate 24 is positioned downstream of the main roller 62 and upstream of the discharge roller 63 in the document transport direction, and faces the contact glass 12 with the ADF 20 closed.

  The ADF 20 takes out the originals placed on the original tray 21 one by one with the carry-in roller 61, and makes the originals U-turn along the main rollers 62. Then, the document is conveyed to a position facing the contact glass 12 (hereinafter referred to as “ADF glass 12”) of the main body unit 10. Specifically, the document is passed between the document pressing plate 24 and the contact glass 12. Thereafter, the document is discharged onto the discharge tray 22 via the discharge roller 63.

  Further, as a document reading method using the image sensor 15, there are a flat bed (document fixed scanning) method and an ADF (document moving scanning) method. In the case of the flat bed system, documents are placed one by one on a contact glass 11 (hereinafter referred to as “FB glass 11”). In this state, the image sensor 15 moves in the sub-scanning direction (the direction orthogonal to the main scanning direction, the left-right direction in FIG. 3), and at that time, the image of the document is read line by line in the main scanning direction. On the other hand, in the case of the ADF method, documents are collectively placed on the document tray 21. Then, the image sensor 15 moves to a position facing the ADF glass 12 and is fixed. In this state, the document is conveyed by the ADF 20 to a position below the document pressing plate 24 and facing the ADF glass 12, and at that time, the image of the document is read line by line in the main scanning direction.

  Further, the ADF 20 includes an image sensor 25 for reading an image of a document and a document pressing plate 26 facing the image sensor 25 in the document transport direction, downstream of the carry-in roller 61 and upstream of the main roller 62. The document is arranged so as to pass between 25 and the document pressing plate 26. Also for the image sensor 25, CIS and CCD can be applied as in the image sensor 15 of the main body unit 10.

  The image sensor 25 is disposed at a position where a surface opposite to the surface read by the image sensor 15 can be read by the ADF method. Therefore, the image reading unit 52 of this embodiment can read one surface by the image sensor 15 of the main body unit 10 and the other surface by the image sensor 25 of the ADF 20 in one document conveyance. That is, it is configured to be able to read both sides in one pass.

[Configuration of image forming unit]
Next, the configuration of the image forming unit 51 will be described with reference to FIG. FIG. 4 shows the internal configuration of the image forming unit 51.

  The image forming unit 51 forms an image based on image data sent from an information terminal device such as a personal computer (PC) or image data of a document read by the image reading unit 52, and prints the image on paper. . The image forming unit 51 of the present embodiment forms an image by a well-known electrophotographic system. As shown in FIG. 4, as shown in FIG. 4, a process unit 50 that forms an image and a fixing device that fixes an unfixed toner image. 8, a paper feed cassette 91 on which paper before image formation is placed, and a paper discharge tray 92 on which paper after image formation is placed.

  In the image forming unit 51, the paper stored in the paper feed cassette 91 located at the bottom passes through the paper feed roller 73, the process unit 50, and the fixing device 8, and passes through the paper discharge roller 74 to the upper paper discharge tray. A substantially S-shaped conveyance path 71 is provided so as to be guided to 92. That is, the image forming unit 51 takes out the sheets placed on the sheet feeding cassette 91 one by one by various conveying rollers (an example of conveying means) including a sheet feeding roller 73 and a sheet discharging roller 74, and processes the sheets. The toner image formed in the process unit 50 is transferred to the sheet. Further, the sheet on which the toner image is transferred is conveyed to the fixing device 8 and the toner image is thermally fixed on the sheet. Then, the sheet after fixing is discharged to a discharge tray 92.

  The process unit 50 includes a photosensitive member 1, a charging device 2 that uniformly charges the surface of the photosensitive member 1, an exposure device 3 that irradiates light on the surface of the photosensitive member 1 to form an electrostatic latent image, and a static device. A developing device 4 that develops the electrostatic latent image with toner and a transfer device 5 that transfers the toner image on the photoreceptor 1 onto a sheet are provided.

  In the process unit 50, the surface of the photoreceptor 1 is uniformly charged by the charging device 2. Thereafter, exposure is performed with light from the exposure device 3 to form an electrostatic latent image of an image to be formed on the paper. Next, toner is supplied to the photoreceptor 1 via the developing device 4. As a result, the electrostatic latent image on the photoreceptor 1 is visualized as a toner image.

  Further, the image forming unit 51 is provided with a double-sided printing mechanism for printing on both sides of the paper. The conveyance path 72 in FIG. 4 is a conveyance path for reversing the sheet of paper that has been printed on one side and re-carrying it to the process unit 50 so that printing is also performed on the other side. is there.

  In double-sided printing by the image forming unit 51, the paper on which the image is formed on the front surface is stopped by the paper discharge roller 74 via the transport path 71 which is the front surface transport path (normal transport path), and the transport direction of the paper is reversed. . Then, the paper is transported from the paper discharge roller 74 to a transport path 72 that is a re-transport path, passes through a position between the process unit 50 and the paper feed cassette 91, and is guided to the process unit 50 again. As a result, the front and back sides of the paper are reversed, and an image is formed on the back side.

[Electric configuration of MFP]
Next, an electrical configuration of MFP 100 will be described. As illustrated in FIG. 5, the MFP 100 includes a control device 30 including a CPU 31, a ROM 32, a RAM 33, an NVRAM 34, an ASIC 35, a network interface 36, and a FAX interface 38.

  The ROM 32 stores various control programs and image processing programs for controlling the MFP 100, various settings, initial values, and the like. The RAM 33 is used as a work area from which various control programs are read or as a storage area for temporarily storing image data.

  The ASIC 35 is electrically connected to the image forming unit 51, the image reading unit 52, the operation panel 40, and the like. For example, the ASIC 35 acquires a signal of image data from the image reading unit 52. Further, a signal for creating a desired image is output to the image forming unit 51. It also accepts various button signals input to the button group 41. Further, a signal indicating the content to be displayed on the display unit 42 is output.

  The CPU 31 controls each component of the MFP 100 via the ASIC 35 while storing the processing result in the RAM 33 or NVRAM 34 according to the control program read from the ROM 32. Further, the CPU 31 performs image processing on the image data obtained from the image reading unit 52 in accordance with, for example, an image processing program read from the ROM 32.

  Information equipment is connected to the network interface 36, and mutual data communication is possible via the network interface 36. Further, the FAX interface 38 is connected to a telephone line, and data communication with an external FAX apparatus or the like is enabled via the FAX interface 38.

[Control MFP]
Next, control of MFP 100 will be described. A copy mode for outputting image data is provided. This copy mode is suitable for outputting image data of a read original.

[Copy processing]
[First Embodiment]
Hereinafter, the copy processing relating to the first embodiment will be described with reference to the flowcharts of FIGS.

  The copy process according to the first embodiment is started by the CPU 31 when an instruction to execute the copy process is input through the operation of the operation panel 40. When the execution of the copy process is started, the CPU 31 also starts executing the output process shown in FIG. In the first embodiment, the description will be made assuming that the document is set on the document tray 21 of the ADF 20.

  In the first embodiment, “paper” refers to both “original” for reading an image on the front surface and “paper” for printing image data. Also, the previous document and the previous paper represent the preceding paper (the previous paper in the figure), and the next original and the next paper represent the subsequent paper (the next paper in the figure).

  First, the CPU 31 determines whether or not all the originals have been read in S100 of FIG. If it is determined that all the originals have been read (S100: Yes), the copy process is terminated.

  On the other hand, if it is determined that all the originals have not been read (S100: No), the image reading unit 52 reads the originals in S101. At this time, one of the documents set on the document tray 21 is transported to the discharge tray 22 by various transport rollers (an example of transport means) including a carry-in roller 61 and a discharge roller 63. In the course of this conveyance, the image formed on the surface of the document is read by the image sensor 15 and the image sensor 25.

  Next, in S102, for example, the CPU 31 detects whether the user has instructed to turn off the power by pressing the power key 43 (an example of a detecting unit). However, the power-off instruction can be detected even while the document is being read.

  When the power-off instruction is not detected (S102: No), the process proceeds to S100 again. If a power-off instruction is detected (S102: Yes), the CPU 31 determines in S103 whether there is a next document to be stopped. Here, the case where there is no next document to be transported is, for example, the case where the last set document is transported and there is no remaining document.

  It is assumed that a sensor (not shown) is attached to the document tray 21 at the right end in the left-right direction in FIG. When the last document starts to be transported into the transport path 60, the sensor attached to the document tray 21 cannot detect the paper. At this time, the CPU 31 determines that there is no next document to be transported. On the other hand, when the sensor detects paper, the CPU 31 determines that there is a next document to be transported.

  However, the next document is a newly transported document that has not yet been transported from the document tray 21. On the other hand, the document that has been transported is the previous document, and even when there are a plurality of documents in the transport path 60, all the documents that have been transported are the previous document.

  If there is no next document to be transported (S103: No), the CPU 31 determines in S104 whether the previous document already transported from the document tray 21 has been discharged to the discharge tray 22.

  If the previous document has not been discharged (S104: No), the process proceeds to S104 again to determine whether the previous document has been discharged. If the previous document has been discharged (S104: Yes), the process proceeds to S109. In S109, the CPU 31 determines whether the paper in the apparatus has been discharged. Here, the case where the paper in the apparatus is not discharged is a case where the paper before the start of conveyance is not discharged in the output process described later.

  When the paper in the apparatus is not discharged (S109: No), the process proceeds to S109 again. If the paper in the apparatus has been discharged (S109: Yes), the process proceeds to S110.

  In S110, the CPU 31 (an example of a control unit) instructs the power supply unit (not shown) to turn off the power, thereby turning off the power and finishing the copy process.

  Here, the power off means that the power supply to at least a part of the MFP 100 is cut off. For example, power supply to the image forming unit 51, the image reading unit 52, the network interface 36, and the FAX interface 38 is cut off, and power is supplied to the control unit 30 and the operation panel 40.

  As a result, the document that has been transported is completely read and discharged, and then the power is turned off. Note that the image data of the document that has been read may be deleted before the power is turned off, stored in the NVRAM 34, or output to an external device such as a PC.

  On the other hand, when it is determined in S103 that there is a next document to be transported (S103: Yes), the carry-in roller 61 stops transporting the next document in S105.

  In subsequent S106, the CPU 31 determines whether or not the power-off instruction is canceled depending on whether the power-off instruction detected in S102 is detected for a predetermined time or more (an example of a determination unit). For example, assume that the specified time is 2 seconds. At this time, for example, if the power key 43 is pressed for 1 second, it is determined that the power-off instruction is canceled, and if it is pressed for 3 seconds, it is determined that the power-off instruction is not canceled.

  When the power-off instruction detected in S102 is detected for a predetermined time or longer (S106: Yes), the CPU 31 determines that the power-off instruction has not been canceled, and proceeds to S104. On the other hand, if the power-off instruction detected in S102 is not detected for a predetermined time or longer (S106: No), the CPU 31 determines that the power-off instruction has been canceled and proceeds to S107.

  In S107, the carry-in roller 61 resumes the conveyance of the next document, and the process proceeds to S100 again.

  Next, the output process will be described with reference to FIG. The execution of the output process is started by the CPU 31 when the execution of the copy process is started. Thereby, the read image data can be sequentially output. Execution may be started after reading in S101 of FIG.

  First, in S200, the CPU 31 determines whether all the image data has been printed on the paper. If it is determined in S200 that all the image data has been printed on the paper (S200: Yes), the output process ends.

  On the other hand, when it is determined that all the image data has not been printed on the sheet (S200: No), the image forming unit 51 prints on the sheet in S201 (an example of an output unit). At this time, the sheet is conveyed from the sheet feeding cassette 91 by the sheet feeding roller 73 and printed on the sheet by the image forming unit 51, and then the sheet is discharged to the sheet discharge tray 92 by the sheet discharge roller 74.

  In subsequent S202, the CPU 31 detects whether the power-off instruction is given by pressing the power key 43, for example. However, it is assumed that the power-off instruction can be detected even during printing on paper.

  When the power-off instruction is not detected (S202: No), the process proceeds to S200 again. When a power-off instruction is detected (S202: Yes), the CPU 31 determines whether there is a next sheet to be stopped in S203. Here, the case where there is no next sheet to be stopped is, for example, the case where the last sheet is started to be transported.

  However, the next sheet is a newly conveyed sheet that has not yet been conveyed from the sheet feeding cassette 91. On the other hand, the document that has been transported is the previous sheet, and even when there are a plurality of sheets in the transport path 72, all the sheets that have been transported are the previous sheet.

  If there is no image data to be printed next, the CPU 31 determines that there is no next sheet to be transported because there is no need to transport a new sheet. On the other hand, when there is image data to be printed next, it is necessary to transport a new sheet, so it is determined that there is a next sheet to be transported.

  If there is no next paper to be transported (S203: No), the previous paper that has already been transported from the paper feed cassette 91 is printed by the image forming unit 51 in the process of being transported by the transport roller, In S204, the CPU 31 determines whether the paper is discharged to the paper discharge tray 92. In addition, when double-sided printing is performed, it is discharged after printing on both sides is completed.

  If the previous paper has not been discharged (S204: No), the process proceeds to S204 again to determine whether the previous paper has been discharged. If the previous paper has been discharged (S204: Yes), the process proceeds to S209. In S209, the CPU 31 determines whether the paper in the apparatus has been discharged. The case where the paper in the apparatus is not discharged is a case where the original document that has not been transported in the copying process described above has not been discharged.

  If the paper in the apparatus is not discharged (S109: No), the process proceeds to S209 again. If the paper in the apparatus has been discharged (S209: Yes), the process proceeds to S210, the power is turned off, and the output process ends. Note that the process of S210 is the same as the process of S110.

  As a result, the paper that has been transported is turned off after the printing is completed and discharged. However, image data that has not been printed may be deleted or stored in the NVRAM 34.

  On the other hand, if it is determined in S203 that there is a next sheet to be transported (S203: Yes), the paper feed roller 73 stops transporting the next sheet in S205.

  In subsequent S206, the CPU 31 determines whether or not the power-off instruction has been canceled depending on whether or not the power-off instruction detected in S202 has been detected for a predetermined time. S206 is the same as the process of S106.

  When the power-off instruction detected in S202 is detected for a predetermined time or longer (S206: Yes), the CPU 31 determines that the power-off instruction has not been canceled, and proceeds to S204. When the power-off instruction is not detected for a predetermined time or longer (S206: No), the CPU 31 determines that the power-off instruction has been canceled and proceeds to S207.

  In S207, the paper feed roller 73 resumes the conveyance of the next sheet, and the process proceeds to S200 again.

  As described above, according to the above-described embodiment, when a power-off instruction is detected by pressing the power key 43, the conveyance of the succeeding sheet can be stopped and the conveyance of the preceding sheet can be completed. When the power-off instruction is not canceled, the power is turned off. When the power-off instruction is canceled, the paper conveyance can be resumed.

  As a result, it is possible to cancel the power off and restart the job before the power is turned off. Also, since the conveyance of the succeeding paper is stopped when the power-off instruction is detected, the paper stays in the middle of the conveyance path, causing a failure or removing the paper to the user. There is no need to let them go, improving convenience.

  In addition, for example, by pressing the power key 43 for a specified time, it is possible to shorten the time until the power is turned off, compared to the case where the conveyance of the paper is stopped after confirming that the power is turned off. . Therefore, the inconvenience which makes a user wait is reduced.

  In the first embodiment, when there is no subsequent sheet to be transported (S103: No, S203: No), the preceding sheet has been discharged (S104: Yes, S201: Yes), and the apparatus When the inner paper has been discharged (S109: Yes, S209: Yes), the power is turned off (S110, S210).

  When there is no subsequent paper to be stopped, that is, when the last paper of the job is transported and discharged, there is a low possibility that the job will end in the middle even if the power is turned off. .

  Therefore, for example, it can be expected that the power supply is turned off earlier than when the power supply is turned off after determining that the power-off instruction has not been canceled by pressing the power key 43 for a specified time. Further, it is not necessary for the user to press the power key 43 for a predetermined time or more, and convenience is improved.

  In the first embodiment, an example of printing is shown as output. However, the output is not limited to printing, and the read image may be transmitted to an external device such as a PC.

  In the first embodiment, the document is set on the ADF 20 at the time of reading. However, the document may be set on the FB glass 11. In this case, since the document is not conveyed, the processing from S103 to S109 is not performed. If an instruction to turn off the power is detected (S102: Yes), the process proceeds to S109. If the paper in the apparatus has been ejected (S109: Yes), the power is turned off and the copy process ends.

  In the first embodiment, the copy process is executed by an execution instruction via the operation panel 40. However, when there is a print instruction including image data from an external device such as a PC, reading is not necessary, and a document is not conveyed at the time of reading. Therefore, the CPU 31 executes output processing instead of copy processing.

  In the first embodiment, it is determined whether or not the paper in the apparatus has been discharged in S109 and S209. If the paper has been discharged, the power is turned off (S110 and S210). As a result, in either the copy process or the output process, the possibility that the power is turned off due to an instruction from the remaining one process even though the paper that has been transported is in the apparatus is reduced. Is done.

  However, the processing of S109 and S209 may not be performed. In this case, the power supply is not turned off unless both the power-off instruction in S110 and the power-off instruction in S210 are instructed. That is, when the previous document has been discharged (S104: Yes) and the previous sheet has been discharged (S204: Yes), the power is turned off.

  Further, when the power is turned off in S110, the power supply to the image reading unit 52 may be cut off, and when the power is turned off in S210, the power supply to the image forming unit 51 may be cut off. As a result, the power can be turned off from the processing that has been completed first, and the possibility that the power is turned off even though the processing has not been completed is reduced.

  At this time, if there is a part that cuts off the power supply other than the image reading unit 52 and the image forming unit 51, the power is turned off in either S110 or S210 for those that are not necessary for the execution of the copy process and the output process. It may be turned off. However, it is preferable to turn off the power when the power can be turned off quickly.

  In the first embodiment, whether or not the power-off instruction is canceled is determined based on whether or not the power-off instruction is detected for a predetermined time or more (S106, S206). However, whether or not the power-off instruction has been canceled may be determined by whether or not the power-off instruction is detected after the preceding paper that has been read or printed is discharged.

  In this case, for example, if the power key 43 is still pressed after the preceding sheet is discharged, it is determined that the power-off instruction has not been canceled, and if the power key 43 has not been pressed, It is determined that the off instruction has been canceled. Also, if the power key 43 is pressed again after the preceding paper is stopped, it is determined that the power-off instruction has not been canceled. If the power key 43 is not pressed again, the power-off instruction is canceled. It may be determined that

  Accordingly, the conveyance of the succeeding paper is stopped and the conveyance of the preceding paper is completed, so that the power can be turned off when the user gives an instruction to turn off the power when the conveyance of the apparatus is stopped. it can. Thus, the user is given time to decide whether to cancel the power-off instruction before the conveyance stops. In other words, when the conveyance is stopped, it is noticed that the power-off is inadvertently given, and an opportunity to cancel the power-off instruction is obtained. In addition, the power can be turned off after confirming that the conveyance is stopped.

  In the first embodiment, in the output process, the paper before the start of conveyance is discharged after the printing is completed. However, when an instruction to turn off the power is detected (S202: Yes), printing may be interrupted and the paper may be discharged. In this case, when the power-off instruction is canceled, printing is started again from the image data in which printing is interrupted halfway.

  In the first embodiment, when double-sided printing is performed, if power-off is detected, the previous paper is discharged after double-sided printing is performed. However, it may be discharged after the printing on one side is finished. This increases the possibility of shortening the time until the conveyance is stopped and the power is turned off. In this case, however, the power-off instruction is canceled (S206: No), and after restarting the conveyance of the next sheet, printing is started again from the image data finished in the single-sided printing state.

  For example, assume that power off is detected during double-sided printing, and the fourth page is ejected in a state of being printed on the surface. If the power-off instruction is canceled at this time, the fourth page is printed again on the front side of the next sheet, and the third page is printed on the back side and discharged. Thereby, double-sided printing can be completed and a copy process can be complete | finished.

[Second Embodiment]
Next, another embodiment of the copy process will be described with reference to the flowcharts of FIGS. In the copy processing of this embodiment, when there is no next document to be transported or there is no next paper to be transported, the power is turned off when the power-off instruction is not canceled.

  This is different from the first embodiment in which the power is turned off regardless of whether the power-off instruction is cancelled. In addition, about the process same as 1st Embodiment, the code | symbol same as 1st Embodiment is attached | subjected and description is abbreviate | omitted. Hereinafter, differences from the first embodiment will be described.

  In S103 of FIG. 8, when there is no next document to be transported (S103: No), the process proceeds to S106. If the power-off instruction detected in S102 is not detected for a predetermined time or longer (S106: No), the process proceeds to S120, and the CPU 31 determines whether the next document conveyance is stopped.

  If the conveyance of the next document is stopped in S120 (S120: Yes), the process proceeds to S107, the conveyance of the next document is resumed, and the process proceeds to S100 again. On the other hand, if the next original is not stopped (S120: No), that is, if there is no next original to be stopped, the process proceeds to S100 again.

  If there is no next sheet to be transported in S203 in FIG. 9 (S203: No), the process proceeds to S206. If the instruction to turn off the power detected in S202 is not detected for a predetermined time or longer (S206: No), the process proceeds to S220, and the CPU 31 determines whether the conveyance of the next sheet is stopped.

  If the transport of the next sheet is stopped in S220, the process proceeds to S207, the transport of the next sheet is resumed, and the process proceeds to S200 again. On the other hand, if the transport of the next sheet is not stopped (S220: No), that is, if there is no next sheet to be transported, the process proceeds to S200 again.

  As described above, according to the second embodiment, when there is no subsequent sheet to be stopped (S103: No, S203: No), when the power-off instruction is canceled (S106: No) , S206: No), the power can be turned off. Thus, if the power key 43 is pressed by mistake, the next job instruction or operation can be executed by canceling the power-off instruction.

  In the second embodiment, when a document is set on the FB glass 11, the processes from S103 to S105, S107, and S120 are not performed. When a power-off instruction is detected (S102: Yes), the process proceeds to S106. When power-off is not detected for a specified time or longer (S106: No), the process proceeds to S100 again.

  If power-off is detected for a predetermined time or longer (S106: Yes), the process proceeds to S109, and if the paper in the apparatus has been discharged (S109: Yes), the process proceeds to S110 and the power is turned off. The copy process ends.

  In addition, this embodiment is only a mere illustration and does not limit this invention at all. Therefore, the present invention can be variously improved and modified without departing from the scope of the invention.

  For example, the present invention is not limited to the MFP, and can be applied to any apparatus having an image reading function such as a copying machine.

  In the above embodiment, one CPU 31 performs all copy processing and output processing. However, the present invention is not limited to this, and may be executed by a plurality of CPUs, a dedicated circuit ASIC (Application Specific Integrated Circuit), or the like. . For example, separate CPUs may execute power-off instruction detection, conveyance stop, power-off instruction cancellation determination, power off, and the like.

31 CPU
34 NVRAM
40 Operation Panel 43 Power Key 51 Image Forming Unit 52 Image Reading Unit 61 Carry-in Roller 63 Discharge Roller 73 Paper Feed Roller 74 Paper Discharge Roller 100 MFP

Claims (6)

Output means for outputting image data read from paper or outputting received image data to paper;
Detection means for detecting a power-off instruction;
A transport unit that stops transport of a succeeding sheet, which is the next sheet, and completes transport of a preceding sheet, which is transported before the succeeding sheet, when the detecting unit detects a power-off instruction; ,
Determining means for determining whether or not the power-off instruction is canceled;
When the determination unit determines that the power-off instruction has been canceled, the conveyance unit restarts the conveyance of the succeeding sheet, thereby restarting reading from the succeeding sheet or outputting to the succeeding sheet. An image processing apparatus comprising: a control unit that performs control to turn off the power after the conveyance of the preceding paper is completed when it is determined that the power-off instruction has not been canceled. The image processing apparatus according to claim 1.
The determination means determines that the power-off instruction detected by the detection means has been canceled when the power-off instruction detected by the detection means has not been continued for a predetermined time, and the power-off instruction detected by the detection means If it continues, it is determined that the power-off instruction has not been canceled. The image processing apparatus according to claim 1 or 2,
The determination unit determines that the power-off instruction is canceled when the detection unit does not detect the power-off instruction after the conveyance unit completes the conveyance of the preceding sheet. An image processing apparatus according to claim 1, wherein, when the detection unit detects a power-off instruction after paper conveyance is completed, it is determined that the power-off instruction has not been canceled. The image processing apparatus according to any one of claims 1 to 3,
The control means is characterized in that, when the detection means detects a power-off instruction, if there is no subsequent paper to be transported, the power is turned off after the transport of the preceding paper is completed. Image processing device. The image processing apparatus according to any one of claims 1 to 4,
The output means outputs the received image data to paper,
An image processing apparatus, wherein when there is uncompleted image data, the output is again output from uncompleted image data when the power-off instruction is canceled. The image processing apparatus according to claim 5.
The output means includes
Outputting image data to both the first side and the second side of the paper; and
When the power-off instruction is canceled after the conveyance is completed with the image data output to the first surface of the preceding paper, the image data output on the first surface of the preceding paper is output. A featured image processing apparatus.

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