JP5098509B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to an image forming apparatus.

  2. Description of the Related Art In recent years, there are image forming apparatuses such as copiers and printers provided with a fixing unit that melts and fixes a toner image transferred onto a sheet. This image forming apparatus performs a jam process to remove the paper held in the nip portion when the paper is held in the nip portion of the fixing unit when a jam (paper jam) occurs. Then, before resuming printing, a cleaning process is performed in which a sheet on which an image is not formed is passed, and residual toner adhering to the surface of the rotary fixing member included in the fixing unit is transferred to the sheet and removed.

As a cleaning processing technique, for example, when a jam is detected and a sheet is pinched in the fixing unit, the fixing unit is restarted and before the sheet is output to the same paper discharge tray as that before the jam detection. A technique is disclosed in which a sheet for the purpose of cleaning the fixing unit is conveyed, and the sheet is nipped and conveyed to the fixing unit without forming a toner image on the sheet (see Patent Document 1).
JP 2006-154192 A

  However, since the conventional technology as described above can arbitrarily select a sheet for cleaning the rotation fixing member of the fixing unit, it is suitable for cleaning an expensive sheet or a sheet dedicated to other jobs. There is a risk that a blank paper will be selected.

  For example, if a jam occurs during the execution of an interrupt job and the paper used in the interrupted job is a paper with a mark or the like or a paper that is meaningful in the paper discharge order, the paper is stored. There is a possibility that the selected paper feed tray is selected and the paper is used for cleaning. In this case, when execution of the interrupted job is resumed, the correspondence between the execution contents of the job and the paper is shifted, and the printed matter desired by the user cannot be output. It has to be corrected, and paper is wasted, which is a cumbersome operation for the user.

  In addition, when there is a reserved job that is executed after completion of execution of a job in which a jam has occurred, a sheet used by the reserved job may be selected and the sheet may be used for cleaning. In this case, when the reserved job is executed, there is a possibility that the paper set for the reserved job is insufficient and the job cannot be continued, resulting in a decrease in workability.

  If there is no paper in use, if a jam occurs during the execution of a job that stops the function to continue the job by switching to the same size paper (automatic paper feed tray switching function), other paper There is a risk of being selected.

  Furthermore, when a jam occurs during execution of a job that forms an image on a tab sheet, when a jam occurs during execution of an inter-sheet mode job, or when a jam occurs during execution of an OHP mode job, etc. Is arbitrarily selectable, there is a risk that expensive paper (tab paper, insertion paper, OHP paper, etc.) may be used for cleaning.

  In view of the above problems, an object of the present invention is to optimize a sheet used when cleaning a fixing unit, and to reduce cost and improve workability.

According to the first aspect of the present invention, a plurality of paper feed trays storing paper for each preset type, a fixing unit for fixing the toner image on the paper on which a toner image is formed, A control unit that supplies paper from a paper feed tray to perform cleaning of the fixing unit; and a display unit that displays information indicating the paper stored in each of the plurality of paper feed trays during the cleaning. The control unit restricts the sheets used for the cleaning according to the state of the image forming job at the time of the cleaning, and determines the sheets that can accept the selection instruction according to the state of the image forming job at the time of the cleaning. Information is displayed on the display unit, and a screen displaying a list of information indicating the sheets stored in the paper feed tray is displayed on the display unit. According to the state of the image forming job at the time of the cleaning, information indicating a sheet for which acceptance of a selection instruction is restricted and information indicating a sheet for which acceptance of a selection instruction is not restricted are displayed in different expressions, and the image formation If the job status is that of an interrupt job that is interrupted and executed by temporarily stopping execution of another job, the job is set to the job interrupted by the interrupt job displayed on the display unit An image forming apparatus is provided that displays information indicating paper in an expression that restricts acceptance of selection instructions .

According to the second aspect of the present invention, a plurality of paper feed trays storing paper for each preset type, a fixing unit for fixing the toner image on the paper on which the toner image is formed, A control unit that supplies paper from a paper feed tray to perform cleaning of the fixing unit; and a display unit that displays information indicating the paper stored in each of the plurality of paper feed trays during the cleaning. The control unit restricts the sheets used for the cleaning according to the state of the image forming job at the time of the cleaning, and determines the sheets that can accept the selection instruction according to the state of the image forming job at the time of the cleaning. Information is displayed on the display unit, and a screen displaying a list of information indicating the sheets stored in the paper feed tray is displayed on the display unit. According to the state of the image forming job at the time of the cleaning, information indicating a sheet for which acceptance of a selection instruction is restricted and information indicating a sheet for which acceptance of a selection instruction is not restricted are displayed in different expressions, and the image formation is performed. When the job status is a status where there is a reserved job to be executed after the execution of the image forming job, information indicating the paper set in the reserved job displayed on the display unit is restricted from accepting a selection instruction. Display with the expression you want.

According to the third aspect of the present invention, a plurality of paper feed trays storing paper for each preset type, a fixing unit for fixing the toner image on the paper on which the toner image is formed, and a control unit for performing cleaning of the fixing portion by supplying paper from the paper feed tray, and a display unit that displays information indicating the paper stored in each of the plurality of paper feed trays during the cleaning The control unit restricts the sheets used for the cleaning according to the state of the image forming job at the time of the cleaning, and determines the sheets that can accept the selection instruction according to the state of the image forming job at the time of the cleaning. to display the information shown on the display unit, a screen displaying a list of information indicating the paper stored in the paper feed tray is displayed on the display unit, and the screen odor According to the state of the image forming job at the time of the cleaning, information indicating a sheet for which acceptance of a selection instruction is restricted and information indicating a sheet for which acceptance of a selection instruction is not restricted are displayed in different expressions, and the image formation When the status of the job is no longer in the paper feed tray where the paper used in the image forming job is stored, the paper from the paper feed tray containing the same size paper as the paper is stored. In the state where the function of continuing the job execution by feeding paper is stopped, the acceptance of the selection instruction is not limited to only the information indicating the paper being used in the image forming job displayed on the display unit. Display with expression.

According to a fourth aspect of the present invention, a plurality of paper feed trays storing paper for each preset type, a fixing unit for fixing the toner image on the paper on which a toner image is formed, A control unit that supplies paper from a paper feed tray to perform cleaning of the fixing unit; and a display unit that displays information indicating the paper stored in each of the plurality of paper feed trays during the cleaning. The control unit restricts the sheets used for the cleaning according to the state of the image forming job at the time of the cleaning, and determines the sheets that can accept the selection instruction according to the state of the image forming job at the time of the cleaning. to display the information shown on the display unit, a screen displaying a list of information indicating the paper stored in the paper feed tray is displayed on the display unit, and the screen odor Depending on the state of the image forming job during the cleaning, and information indicating the sheet to be limited accepts the selection instruction is displayed in different representations and information indicating a sheet acceptance is not limited selection instruction, the image forming When the job state is a state in which an insertion mode for inserting a sheet stored in a preset sheet feeding tray into an image-formed sheet is set, the preset setting displayed on the display unit The information indicating the paper stored in the paper feed tray is displayed in an expression that restricts acceptance of the selection instruction.

  According to the fifth aspect of the present invention, a plurality of paper feed trays storing paper for each preset type, a fixing unit for fixing the toner image on the paper on which the toner image is formed, A control unit that supplies paper from a paper feed tray to perform cleaning of the fixing unit; and a display unit that displays information indicating the paper stored in each of the plurality of paper feed trays during the cleaning. The control unit restricts the sheets used for the cleaning according to the state of the image forming job at the time of the cleaning, and determines the sheets that can accept the selection instruction according to the state of the image forming job at the time of the cleaning. Information is displayed on the display unit, and a screen displaying a list of information indicating the sheets stored in the paper feed tray is displayed on the display unit. According to the state of the image forming job at the time of the cleaning, information indicating a sheet for which acceptance of a selection instruction is restricted and information indicating a sheet for which acceptance of a selection instruction is not restricted are displayed in different expressions, and the image formation is performed. When the job state is that the paper used in the image forming job is a special paper, the information indicating the special paper displayed on the display unit is displayed in an expression that restricts acceptance of a selection instruction.

According to a sixth aspect of the present invention, in the image forming apparatus according to any one of the first to fifth aspects, an instruction for selecting a sheet to be used at the time of the cleaning is received, and a sheet selection signal based on the selection instruction is output. An input unit that outputs to the control unit is provided, and the control unit enables or disables the paper selection signal input from the input unit according to the state of the image forming job at the time of the cleaning.

According to a seventh aspect of the present invention, in the image forming apparatus according to the first aspect , the control unit has a state in which the state of the image forming job is a reserved job that is executed after the end of execution of the image forming job. If it is, information indicating the paper set in the reserved job displayed on the display unit is displayed in an expression that restricts acceptance of the selection instruction.

According to an eighth aspect of the present invention, in the image forming apparatus according to the fourth aspect, the control unit determines that the state of the image forming job is that the paper used in the image forming job is a special paper. The information indicating the special paper displayed on the display unit is displayed in an expression that restricts acceptance of the selection instruction.

According to a ninth aspect of the present invention, in the image forming apparatus according to the fifth aspect , the special paper is one of tab paper and OHP paper.

According to the first aspect of the present invention, since the sheets to be used at the time of cleaning can be limited based on the state of the image forming job, the sheets to be used at the time of cleaning the fixing unit after the jam has occurred can be optimized. In addition, it is possible to reduce costs and improve workability. In addition, since information indicating a sheet that can accept a selection instruction can be displayed according to the state of the image forming job, it is possible to optimize the sheet used when cleaning the fixing unit. Workability can be improved. Further, according to the state of the image forming job, a screen is displayed in which information indicating sheets for which acceptance of selection instructions is restricted and information indicating sheets for which selection instructions are not restricted are displayed in different expressions. Therefore, it is possible to optimize the paper used when cleaning the fixing unit. Also, when a jam occurs during the execution of an interrupt job, even if the paper used in the interrupted job is a paper on which a mark or the like is formed or a paper that is meaningful in the paper discharge order, Since the information indicating the paper set for the selected job is displayed in an expression that restricts acceptance of the selection instruction, the paper is not selected. Therefore, when execution of the interrupted job is resumed, the correspondence between the execution contents of the interrupted job and the paper does not shift, and the user can output the desired printed matter. Waste of paper due to correction is eliminated, and workability can be improved.

According to the second aspect of the present invention, since the sheets to be used at the time of cleaning can be limited based on the state of the image forming job, the sheets to be used at the time of cleaning the fixing unit after the jam occurs can be optimized. In addition, it is possible to reduce costs and improve workability. In addition, since information indicating a sheet that can accept a selection instruction can be displayed according to the state of the image forming job, it is possible to optimize the sheet used when cleaning the fixing unit. Workability can be improved. Further, according to the state of the image forming job, a screen is displayed in which information indicating sheets for which acceptance of selection instructions is restricted and information indicating sheets for which selection instructions are not restricted are displayed in different expressions. Therefore, it is possible to optimize the paper used when cleaning the fixing unit. In addition, even when there is a reserved job that is executed after the execution of the job in which a jam has occurred and the paper to be used is set, the information indicating the paper used by the reserved job is restricted from accepting the selection instruction. Since it can be displayed in an expression, the paper is not selected. Accordingly, when the reserved job is executed, there is no possibility that the paper set for the reserved job is used for cleaning and the job cannot be continued, and the workability can be prevented from being lowered.

According to the third aspect of the present invention, since the sheets to be used at the time of cleaning can be limited based on the state of the image forming job, the sheets to be used at the time of cleaning the fixing unit after the jam has occurred can be optimized. In addition, it is possible to reduce costs and improve workability. In addition, since information indicating a sheet that can accept a selection instruction can be displayed according to the state of the image forming job, it is possible to optimize the sheet used when cleaning the fixing unit. Workability can be improved. Further, according to the state of the image forming job, a screen is displayed in which information indicating sheets for which acceptance of selection instructions is restricted and information indicating sheets for which selection instructions are not restricted are displayed in different expressions. Therefore, it is possible to optimize the paper used when cleaning the fixing unit. In addition, when the paper runs out in the paper feed tray where the paper being used is stored, the paper is fed from the paper feed tray containing the same size paper as the paper and the job is executed. Even if a jam occurs during the execution of a job for which the function to continue printing is stopped, only the paper being used in the image forming job is selected, and other paper is selected. Can be prevented.

According to the fourth aspect of the present invention, since the sheets to be used at the time of cleaning can be limited based on the state of the image forming job, the sheets to be used at the time of cleaning the fixing unit after the jam has occurred can be optimized. In addition, it is possible to reduce costs and improve workability. In addition, since information indicating a sheet that can accept a selection instruction can be displayed according to the state of the image forming job, it is possible to optimize the sheet used when cleaning the fixing unit. Workability can be improved. Further, according to the state of the image forming job, a screen is displayed in which information indicating sheets for which acceptance of selection instructions is restricted and information indicating sheets for which selection instructions are not restricted are displayed in different expressions. Therefore, it is possible to optimize the paper used when cleaning the fixing unit. In addition, when the insertion mode is set, even if the paper to be inserted is an expensive paper, the information indicating the paper is displayed in an expression that restricts acceptance of the selection instruction. There is no risk of being used for cleaning, and the cost of paper used for cleaning can be reduced.

According to the fifth aspect of the present invention, since the sheets to be used at the time of cleaning can be restricted based on the state of the image forming job, the sheets to be used at the time of cleaning the fixing unit after the jam has occurred can be optimized. In addition, it is possible to reduce costs and improve workability. In addition, since information indicating a sheet that can accept a selection instruction can be displayed according to the state of the image forming job, it is possible to optimize the sheet used when cleaning the fixing unit. Workability can be improved. Further, according to the state of the image forming job, a screen is displayed in which information indicating sheets for which acceptance of selection instructions is restricted and information indicating sheets for which selection instructions are not restricted are displayed in different expressions. Therefore, it is possible to optimize the paper used when cleaning the fixing unit. Further, since the information indicating the special paper is displayed in an expression in which acceptance of the selection instruction is restricted, there is no possibility that the special paper is used for cleaning the fixing unit. Can be achieved.

According to the sixth aspect of the present invention, the same effect as in any one of the first to fifth aspects can be obtained, as well as the selection of the paper to be used for cleaning according to the state of the image forming job. Since the instruction signal can be validated or invalidated, it is possible to optimize the sheet used for sheet passing during cleaning according to the state of the image forming job.

According to the seventh aspect of the present invention, it is possible to obtain the same effect as that of the first aspect , as well as a reserved job that is executed after completion of the job in which a jam has occurred and in which the paper to be used is set. Even if there is, the information indicating the sheet used by the reservation job can be displayed in an expression that restricts acceptance of the selection instruction, and thus the sheet is not selected. Accordingly, when the reserved job is executed, there is no possibility that the paper set for the reserved job is used for cleaning and the job cannot be continued, and the workability can be prevented from being lowered.

According to the eighth aspect of the invention, the same effect as in the fourth aspect can be obtained, and the information indicating the special paper is displayed in an expression in which acceptance of the selection instruction is restricted. Since there is no possibility that the paper is used for cleaning the fixing unit, the cost of the paper used for cleaning can be reduced.

According to the ninth aspect of the invention, the same effect as in the fifth aspect can be obtained , and any one of tab paper and OHP paper can be used as the special paper.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, the configuration will be described.
FIG. 1 is a schematic cross-sectional configuration diagram of an image forming apparatus 1 according to the present embodiment.

  As shown in FIG. 1, the image forming apparatus 1 reads an image from a document, forms a read image on a sheet P, and outputs it, page data including image data from an external device or the like, and each image data A print function for receiving a job including the image forming conditions, and forming and outputting an image on the paper P based on the received job. As shown in FIG. 1, the image forming apparatus 1 includes an image reading unit 20, a printing unit 40, and the like.

  The image reading unit 20 includes an automatic document feeder 21 called an ADF (Auto Document Feeder) and a reading unit 22. The document d placed on the document tray T1 of the automatic document feeder 21 is conveyed to a contact glass as a reading location, and an image on one or both sides of the document d is read by an optical system, and a CCD (Charge Coupled Device) 22a. As a result, the image of the document d is read. Here, the image means not only image data such as graphics and photographs but also text data such as characters and symbols.

  An image (analog image signal) read by the image reading unit 20 is output to a reading processing unit 140 of an image control board, which will be described later, A / D converted by the reading processing unit 140 and subjected to various image processing, and then printed. Is output to the unit 40.

  The printing unit 40 performs electrophotographic image forming processing based on the input print data. The paper feeding unit 41, the paper feeding / conveying unit 42, the image forming unit 43, the fixing unit 44, and the unloading unit 45. It is configured with.

  The paper feed unit 41 includes a plurality of paper feed trays 41a, paper feed means 41b, a manual feed tray T2, and the like. The paper feed tray 41a stores standard paper, special paper, insertion paper, and other paper P identified for each paper feed tray 41a on the basis of the amount and size of the paper for each preset type. The paper P is transported one by one from the top to the paper transport section 42 by the paper feeding means 41b. The manual feed tray T2 is a paper feed tray on which various types of paper P can be stacked according to the user's needs. The paper P stacked by the paper feed rollers is directed from the top to the paper feed / conveyor unit 42 one by one. Transport.

  As the special paper, for example, a special paper that forms a set of special paper groups (tab paper, color sheets, etc.) arranged in a predetermined order, an OHP paper, a photographic image, and other high-quality images (see FIG. Glossy paper). The insertion sheet is a sheet on which an image is formed in advance or a sheet arbitrarily set by the user. In this embodiment, standard paper, special paper, and insertion paper are collectively referred to as paper.

  The sheet feeding / conveying section 42 conveys the sheet P conveyed from the sheet feeding tray 41a or the manual feed tray T2 to the secondary transfer roller 42b via a plurality of intermediate rollers, registration rollers 42a, and the like. Further, the sheet feeding / conveying section 42 conveys the sheet P on which the single-sided image formation processing has been performed to the duplex conveying path by the conveying path switching plate, and again conveys it to the secondary transfer roller 42b via the intermediate roller and the registration roller 42a. The toner images transferred to an intermediate transfer belt 43b described later are collectively transferred onto the paper P by the secondary transfer roller 42b.

  When the image forming unit 43 forms an image of a maximum of four colors (yellow (Y), magenta (M), cyan (C), and black (K)), each image can be filled with toner of different colors. The image forming units 43Y, 43M, 43C, and 43K, a cleaning unit 43a, and an intermediate transfer belt 43b are provided.

  For example, the image forming unit 43Y includes a charging device, an exposure device, a developing device, a primary transfer roller, and a cleaning device arranged around the photosensitive drum, and forms a yellow (Y) image.

  Specifically, an electrostatic latent image is formed by irradiating the photosensitive drum charged by the charging device with light according to yellow (Y) image data from the exposure device. The developing device develops the electrostatic latent image by attaching charged yellow (Y) toner to the surface of the photosensitive drum on which the electrostatic latent image is formed. The photosensitive drum to which the toner is adhered by the developing device is transferred to an intermediate transfer belt 43b described later while being rotated at a constant speed to a transfer position where the primary transfer roller is disposed. After the toner is transferred to the intermediate transfer belt 43b, the cleaning device removes residual charges, residual toner, and the like on the surface of the photosensitive drum.

  The image forming units 43M, 43C, and 43K have the same configuration as the image forming unit 43Y, and form magenta (M), cyan (C), and black (K) images, respectively.

The intermediate transfer belt 43b is a semiconductive endless belt that is suspended and supported rotatably by a plurality of rollers, and is driven to rotate as the rollers rotate.
The intermediate transfer belt 43b is pressure-bonded to the respective photosensitive drums by primary transfer rollers of the image forming units 43Y, 43M, 43C, and 43K. As a result, each toner developed on the surface of each photosensitive drum is transferred to the intermediate transfer belt 43b at the transfer position by each primary transfer roller, and yellow, magenta, cyan, and cyan on the paper P at the transfer position by the secondary transfer roller 42b. Each black toner is sequentially transferred in a superimposed manner. The intermediate transfer belt 43b transfers the toner image onto the paper P by the secondary transfer roller 42b, and then separates the paper P from the curvature and electrostatically, and the residual toner is removed by the cleaning unit 43a.

  The fixing unit 44 includes a rotary fixing member 44 a having a heat source and a pressure roller 44 b that presses against the rotary fixing member 44 a to form a nip portion N, and thermally fixes the toner image transferred to the paper P. Examples of the rotation fixing member 44a include a heating roller and a heating belt.

  The paper P on which the toner image is fixed is sandwiched between the paper discharge rollers of the carry-out unit 45 and is carried out from the carry-out port to the paper discharge tray T3.

FIG. 2 shows a control block diagram of the image forming apparatus 1.
As shown in FIG. 2, the image forming apparatus 1 includes a main body 1a and a printer controller 1b. The image forming apparatus 1 is connected to an external apparatus 2 on the network 3 through a LANIF (Local Area Network InterFace) 14 of the printer controller 1b so as to be able to send and receive information to and from each other.

  The main body unit 1 a includes an image reading unit 20, an operation display unit 30 having an LCD (Liquid Crystal Display) 31 and a touch panel 32, a printing unit 40, and an image control board 100. In addition, the same code | symbol is attached | subjected to the structure same as each part demonstrated in FIG. 1, and the description is abbreviate | omitted.

  The image control board 100 includes a control unit 110, a nonvolatile memory 120, a RAM (Random Access Memory) 130, a reading processing unit 140, a compression IC 150, a DRAM (Dynamic Random Access Memory) control IC 160, an image memory 170, a decompression IC 180, and a writing process. Part 190.

The control unit 110 is configured by a CPU (Central Processing Unit) or the like, reads a system program stored in the non-volatile memory 120 and a specified program from various application programs, expands the RAM 130, and expands the RAM 130. Various processes are executed in cooperation with the program, and each part of the image forming apparatus 1 is centrally controlled.
For example, in accordance with an instruction signal input from the operation display unit 30 or the external device 2, the copy mode, printer mode, and scanner mode are switched, and control such as copying, printing, and reading of image data is performed.

  The control unit 110 reads a program for executing the cleaning sheet setting process according to the present embodiment and various data necessary for the program from the nonvolatile memory 120, and cooperates with the program and the various data to fix the fixing unit. Based on the image forming job that was executed when a jam occurred when receiving an instruction to select a sheet to be used for a cleaning process in which residual toner attached to the rotating fixing member 44a is transferred to the sheet and removed. Limit the paper used for the cleaning process.

  The control unit 110 operates a display screen for displaying a list of paper feed tray buttons as information indicating paper stored in the paper feed tray (a paper feed tray selection screen to be described later) as a restriction on the paper used for the cleaning process. A paper feed tray button as information that is displayed on the LCD 31 of the unit 30 and that indicates a sheet for which acceptance of a selection instruction is restricted, and a paper feed tray button as information that indicates a paper that is not restricted for acceptance of a selection instruction. Display in different expressions. In addition, the control unit 110 enables or disables the paper selection signal input from the operation display unit 30 according to the state of the image forming job.

When the state of the image forming job is an interrupt job state in which the execution of another job is temporarily stopped and interrupted, the cleaning paper setting process is performed on the paper feed tray selection screen displayed on the LCD 31. A paper feed tray button serving as information indicating the paper set in the job interrupted by the interrupt job is displayed as an expression (selection disabled state) for restricting acceptance of the selection instruction. Further, when the state of the image forming job is a state in which there is a reserved job to be executed after the execution of the image forming job, the sheet set in the reserved job is displayed on the paper feed tray selection screen displayed on the LCD 31. A sheet feed tray button as information to be displayed is displayed as an expression (selection disabled state) for restricting acceptance of selection instructions.
In other words, after the jam is cleared, if there is another job set with a paper different from the paper feed tray set for the image forming job, the paper feed corresponding to the paper set for the other job is set. The display state of the tray button is made unselectable.

Further, the image forming apparatus 1 according to the present embodiment has the same size as the paper when the paper is exhausted in the paper feed tray 41a in which the used paper is stored during execution of the image forming job. A function (hereinafter referred to as an automatic paper feed tray switching function) that feeds paper from the paper feed tray 41a in which the paper is stored and continues execution of the image forming job. It is assumed that the user can arbitrarily set the stop for each job.
In the cleaning paper setting process, when the image forming job is set to stop the automatic paper feeding tray switching function, the paper used in the image forming job is displayed on the paper feeding tray selection screen displayed on the LCD 31. Only the paper feed tray button as information is displayed as an expression (selectable state) in which reception of a selection instruction is not restricted.

  Further, in the cleaning paper setting process, when an insertion mode (also referred to as an inter sheet mode) in which a paper in which an image forming job is set in advance is inserted into an image-formed paper is set, the cleaning paper setting process is performed on the LCD 31. On the displayed paper feed tray selection screen, a paper feed tray button as information indicating preset paper is displayed as an expression (selection disabled state) that restricts acceptance of selection instructions. In addition, when the image forming job is in a state where the paper used in the image forming job is a special paper, a paper feed tray button is selected as information indicating the special paper on the paper feed tray selection screen displayed on the LCD 31. It is displayed as an expression (selection disabled state) in which acceptance of instructions is restricted.

  In addition to various processing programs and data relating to image formation, the nonvolatile memory 120 stores a cleaning paper setting processing program according to the present embodiment, data processed by the various programs, and the like. In addition, various types of information such as the name of the type of paper stored in each paper feed tray, paper size (for example, A4, A3, B5, etc.), paper weight, and the like are stored.

  The RAM 130 forms a work area that temporarily stores various programs executed by the control unit 110, data related to these programs, various data constituting the job, and the like.

  The reading processing unit 140 performs various processing such as analog processing, A / D conversion processing, and shading processing on the analog image signal input from the image reading control unit 200 of the image reading unit 20, and then generates digital image data. To do. The generated image data is output to the compression IC 150.

  The compression IC 150 performs compression processing on the input digital image data and outputs it to the DRAM control IC 160.

  The DRAM control IC 160 controls the image data compression processing by the compression IC 150 and the decompression processing of the compressed image data by the decompression IC 180 in accordance with an instruction from the control unit 110, and performs input / output control of image data to the image memory 170. For example, when an instruction to store the image signal read by the image reading unit 20 is given, the compression processing of the image data input from the reading processing unit 140 is executed by the compression IC 150, and the compressed image data is compressed in the image memory 170. It is stored in the memory 171. When the print output of the compressed image data stored in the compression memory 171 is instructed, the compressed image data is read from the compression memory 171, decompressed by the decompression IC 180, and stored in the page memory 172. Further, when an instruction to print out the image data stored in the page memory 172 is issued, the image data is read from the page memory 172 and output to the writing processing unit 190.

  The image memory 170 includes a compression memory 171 and a page memory 172 configured from DRAM (Dynamic RAM). The compression memory 171 is a memory for storing compressed image data, and the page memory 172 is a memory for temporarily storing image data (print data) for print output.

  The decompression IC 180 performs decompression processing on the compressed image data.

  The write processing unit 190 generates print data for image formation based on the image data input from the DRAM control IC 160 and outputs the print data to the print unit 40.

  The operation display unit 30 includes an LCD (Liquid Crystal Display) 31, a touch panel 32 provided so as to cover the LCD 31, an operation display control unit 300, and other operation key groups such as a numeric keypad (not shown). The operation display control unit 300 displays various setting screens for inputting various setting conditions according to a display signal input from the control unit 110, a cleaning selection screen G1 as shown in FIGS. Various processing results and the like are displayed on the LCD 31. In addition, the operation display control unit 300 receives a selection instruction when the operation key group or the touch panel 32 is pressed, and outputs an operation signal based on the selection instruction to the control unit 110.

  The print unit 40 includes various units relating to print output, such as the image forming unit 43 and the fixing unit 44 shown in FIG. The print control unit 400 controls the operation of each unit of the print unit 40 such as the image forming unit 43 and the fixing unit 44 in accordance with an instruction from the control unit 110, and the paper P is based on the print data input from the writing processing unit 190. To perform image formation.

  Next, each part of the printer controller 1b will be described. The printer controller 1b manages and controls jobs input to the image forming apparatus 1 from the external apparatus 2 connected to the network 3 when the image forming apparatus 1 is used as a network printer. The data to be printed is received, and the data is transmitted as a job to the main body 1a.

  The printer controller 1b includes a controller control unit 11, a DRAM control IC 12, an image memory 13, and a LANIF 14.

  The controller control unit 11 comprehensively controls the operation of each unit of the printer controller 1b, and transmits data input from the external device 2 to the main body unit 1a via the LANIF 14 as a job.

  The DRAM control IC 12 controls storage of data received by the LANIF 14 in the image memory 13 and reading of data from the image memory 13. The DRAM control IC 12 is connected to the DRAM control IC 160 of the image control board 100 via a PCI (Peripheral Components Interconnect) bus, and reads data to be printed from the image memory 13 in accordance with instructions from the controller control unit 11. Output to the control IC 160.

  The image memory 13 is composed of a DRAM and temporarily stores input output data.

  The LANIF 14 is a communication interface for connecting to a network 3 such as a NIC (Network Interface Card) or a LAN such as a modem, and receives data from the external device 2. The received data is output to the DRAM control IC 12.

Next, the operation of the present embodiment will be described.
3, 4, and 5 are flowcharts of the cleaning sheet setting process in the present embodiment. Each flowchart shown in FIGS. 3, 4, and 5 is processing executed by the control unit 110.

  First, referring to the flowchart shown in FIG. 3, a paper feed tray button corresponding to each paper in the paper feed tray selection screen based on whether the status of the image forming job is an interrupt job or whether there is a reserved job. A description will be given of a cleaning sheet setting process for controlling the display state.

  First, in the image forming apparatus 1, after a jam occurs, a sheet that causes the jam is removed by the user, and the jam is eliminated. When the jam is resolved, the control unit 110 performs a cleaning process for passing a sheet on which an image is not formed in the fixing unit 44 and transferring and removing residual toner attached to the rotary fixing member 44a on the sheet. A cleaning selection screen for accepting an instruction to select whether or not is displayed on the LCD 31.

FIG. 6 shows an example of the cleaning selection screen G1.
As shown in FIG. 6, the cleaning selection screen G1 includes a message display area M1 that displays a message as to whether or not to perform the cleaning process, a “Yes” button B11 that receives an instruction to perform the cleaning process, and no cleaning process. A “No” button B12 for receiving an instruction is provided.

  When an operation signal for accepting an instruction to select the “No” button B12 is input on the cleaning selection screen G1 (step S1; No), the control unit 110 does not execute the cleaning process and executes the waiting job execution process. Return.

  When the operation signal for accepting the selection instruction for the “Yes” button B11 is input on the cleaning selection screen G1 (step S1; Yes), the control unit 110 is in the state of the image forming job that was executed when the jam occurred. Determines whether the job is an interrupt job (step S2).

  If the state of the image forming job is an interrupt job (step S2; Yes), the control unit 110 sets the paper set in the image forming job that is the interrupt job and the job interrupted by the image forming job. It is determined whether or not the sheet set to is the same sheet (step S3).

  In the present embodiment, paper is stored in the paper feed tray for each type, and the paper feed tray and the paper feed tray button have a corresponding relationship. And the job to be compared (for example, the interrupted job) are determined whether or not the paper feed trays set are the same, the paper set for the image forming job and the comparison target It is determined whether or not the sheet set in the job is the same sheet.

  When the image forming job which is an interrupt job and the interrupted job are not in the same paper feed tray (step S3; No), the control unit 110 supplies paper as information indicating the paper set in the interrupted job. The display state of the tray button is set to a non-selectable state, the paper selection signal based on the selection instruction of the paper feed tray button is set to invalid (step S4), and the paper feed tray selection screen is displayed based on the setting. (Step S5).

FIG. 7 shows an example of the paper feed tray selection screen G2.
As shown in FIG. 7, the paper feed tray selection screen G2 includes a sheet passing number setting unit B21 that sets the number of sheets to be passed to the fixing unit 44 when the cleaning process is executed, and each of the image forming apparatuses 1. A plurality of paper feed tray buttons B22a to B22c, an OK button B23, and a cancel button B24 corresponding to each of the paper feed trays 41a are provided. Further, a list of information indicating the sheets stored in the sheet feed tray is displayed by the sheet feed tray buttons B22a to B22c.

  The display states of the paper feed tray buttons B22a to B22c are displayed based on the set display state. For example, when the paper feed tray button 22c corresponding to “tray 3” is set to the non-selectable state, the paper is displayed as shaded as the non-selectable state, and even if the selection instruction is accepted by the user, the paper based on the selection instruction The selection signal is invalid. On the other hand, when the paper feed tray buttons B22a and B22b corresponding to “tray 1” and “tray 2” are set to the selectable state, the selection is not shaded and the selection instruction is accepted by the user The paper selection signal based on the selection instruction becomes valid, and an operation signal including the paper selection signal is output to the control unit 110.

  In the present embodiment, the display state of the paper feed tray button set to the non-selectable state is a shaded display, but it may not be displayed and is not limited to this. Further, in the present embodiment, the display state of the paper feed tray button when not specifically set is set to a selectable state, and the paper selection signal based on the selection instruction of the paper feed tray button is set to be valid.

  Therefore, the LCD 31 that displays the paper feed tray selection screen G2 has the paper feed tray buttons B22a to B22a to B respectively corresponding to the plurality of paper feed trays 41a in which the paper is stored as information indicating the paper stored in each paper feed tray. It functions as a display unit for displaying a screen for displaying B22c as a list (paper feed tray selection screen G2). Further, when any one of the paper feed tray buttons B22a to B22c on the paper feed tray selection screen G2 is pressed, a selection instruction is accepted, and an operation signal including a paper selection signal based on the selection instruction is sent to the control unit 110. The output touch panel 32 functions as an input unit.

  When an operation signal indicating that the OK button B23 is pressed is input, the control unit 110 selects any one of the sheet passing number set by the sheet passing number setting unit B21 and the plurality of sheet feeding tray buttons B22a to B22c. Based on an operation signal including a paper selection signal indicating a paper feed tray instructed to be selected when the paper feed tray button is pressed, the paper is transported from the paper feed tray by the number of sheets to execute the cleaning process. . When the operation signal indicating that the cancel button B24 is pressed is input, the control unit 110 returns to the cleaning selection screen G1.

  When the state of the image forming job is not an interrupt job (step S2; No), the control unit 110 determines whether the state of the image forming job is a state in which there is a reserved job that is executed after the end of the execution of the image forming job. Is determined (step S6).

  When the state of the image forming job is a state where there is a reserved job (step S6; Yes), the control unit 110 sets the paper feeding tray set for the image forming job and the paper feeding tray set for the reserved job. Is determined to be the same paper feed tray, that is, whether the paper types set in the image forming job and the reserved job are the same (step S7).

  When the image forming job and the reservation job are not the same paper feed tray (step S7; No), the control unit 110 cannot select the display state of the paper feed tray button as information indicating the paper set in the reservation job. In addition, the paper selection signal based on the selection instruction of the paper feed tray button is set to invalid (step S8), and the paper feed tray selection screen is displayed based on the setting (step S5).

  When the image forming job that is an interrupt job and the interrupted job are in the same paper feed tray (step S3; Yes), the control unit 110 determines that the state of the image forming job is a state that there is no reservation job (step S3). S6; No), or when the image forming job and the reservation job are the same paper feed tray (step S7; Yes), the display state of all paper feed tray buttons is set to a selectable state (step S9). Based on the setting, a paper feed tray selection screen is displayed (step S5).

  In this way, if a jam occurs during the execution of an interrupt job, even if the paper used in the interrupted job is a paper on which a mark or the like is formed or a paper that is meaningful in the paper discharge order, Since the paper feed tray button as information indicating the paper set in the interrupted job is displayed in a non-selectable state, the paper selection instruction is not accepted. Therefore, when execution of the interrupted job is resumed, the correspondence between the execution contents of the interrupted job and the paper does not shift, and the user can output the desired printed matter. Waste of paper due to correction is eliminated, and workability can be improved.

  Also, even if there is a reserved job that is executed after completion of the job in which a jam has occurred and the paper to be used is set, the paper feed tray button is selected as information indicating the paper used by the reserved job. Since the paper selection signal is displayed in the disabled state and the paper selection signal based on the selection instruction of the paper feed tray button is invalid, reception of the paper feed tray selection instruction can be prevented. Accordingly, when the reserved job is executed, there is no possibility that the paper set for the reserved job is used for cleaning and the job cannot be continued, and the workability can be prevented from being lowered.

Referring to the flowchart shown in FIG. 4, based on whether the image forming job is in the automatic paper feed tray switching function or not, the paper feed tray button corresponding to the paper feed tray on the paper feed tray selection screen is displayed. A cleaning sheet setting process for controlling the display state will be described.
The operation before step S11 is the same as step S1 shown in FIG.

  When the operation signal for accepting the selection instruction of the “No” button B12 is input on the cleaning selection screen G1 (Step S11; No), the control unit 110 does not execute the cleaning process and executes the waiting job execution process. Return.

  When an operation signal for accepting an instruction to select the “Yes” button B11 is input on the cleaning selection screen G1 (step S11; Yes), the control unit 110 determines that the state of the image forming job is to stop the automatic paper feed tray switching function. It is determined whether it is set (step S12).

  When the state of the image forming job is set to stop the automatic paper feed tray switching function (step S12; Yes), the control unit 110 is information indicating the paper used in the image forming job before the jam occurs. The display state of the paper feed tray button is set to a selectable state, the display state of the paper feed tray buttons of the other paper feed trays is set to a non-selectable state, and based on the selection instruction of the paper feed tray button The paper selection signal is set to invalid (step S13), and the paper feed tray selection screen is displayed based on the setting (step S14).

  The paper feed tray selection screen displayed in step S14 is substantially the same as the paper feed tray selection screen displayed in step S5 shown in FIG.

  When the state of the image forming job is not set to stop the automatic paper feed tray switching function (step S12; No), that is, when the automatic paper feed tray switching function is valid, the control unit 110 performs all the operations. The display state of the paper feed tray button is set to a selectable state (step S15), and the paper feed tray selection screen is displayed based on the setting (step S14).

  As described above, even when a jam occurs during execution of a job for which the automatic paper feed tray switching function is stopped, only the paper feed tray button is selected as information indicating the paper being used in the image forming job. Thus, it is possible to prevent other sheets from being selected.

  Referring to the flowchart shown in FIG. 5, whether the state of the image forming job is set to the inter sheet mode or whether the paper to be used is special paper (in this embodiment, tab paper and OHP paper). A cleaning paper setting process for controlling the display state of the paper feed tray button corresponding to the paper feed tray on the paper feed tray selection screen based on whether or not it will be described. The operation before step S21 is the same as step S1 shown in FIG.

  When the operation signal for accepting the selection instruction of the “No” button B12 is input on the cleaning selection screen G1 (step S21; No), the control unit 110 does not execute the cleaning process and executes the waiting job execution process. Return.

  When the operation signal for accepting the selection instruction for the “Yes” button B11 is input on the cleaning selection screen G1 (step S21; Yes), the control unit 110 sets the state of the image forming job to a preset paper feed tray. It is determined whether or not an intersheet mode (insertion mode) in which the stored insertion page sheet is inserted between the imaged body page sheet and the sheet is set (step S22).

  When the image forming job is in a state where the inter-sheet mode is set (step S22; Yes), the control unit 110 determines whether the inserted page and the body page are set in the same paper feed tray, that is, Then, it is determined whether or not the inserted page and the body page are the same sheet (step S23).

  When the insertion page and the text page are not set to the same paper feed tray (step S23; No), the control unit 110 displays the display state of the paper feed tray button as information indicating the paper set as the insertion page. The selection disabled state is set, the paper selection signal based on the selection instruction of the paper feed tray button is set to invalid (step S24), and the paper feed tray selection screen is displayed based on the setting (step S25).

  The paper feed tray selection screen displayed in step S25 is substantially the same as the paper feed tray selection screen displayed in step S5 shown in FIG.

  When the state of the image forming job is a state in which the inter sheet mode is not set (step S22; No), the control unit 110 determines that the state of the image forming job is that the paper used in the image forming job is a tab sheet. It is determined whether or not there is, for example, whether or not the state of the image forming job is a tab sheet print mode for forming an image on a tab sheet (step S26).

  When the sheet used in the image forming job is a tab sheet (step S26; Yes), the control unit 110 sets the display state of the sheet feed tray button as information indicating the tab sheet to a non-selectable state, and The paper selection signal based on the selection instruction of the paper feed tray button is set invalid (step S27), and the paper feed tray selection screen is displayed based on the setting (step S25).

  If the sheet used in the image forming job is not a tab sheet (step S26; No), the control unit 110 determines whether the state of the image forming job is an OHP sheet. Then, it is determined whether or not the state of the image forming job is an OHP print mode for forming an image on OHP paper (step S28).

  When the paper used in the image forming job is OHP paper (step S28; Yes), the control unit 110 sets the display state of the paper feed tray button as information indicating the OHP paper to a non-selectable state. The paper selection signal based on the selection instruction of the paper feed tray button is set invalid (step S29), and the paper feed tray selection screen is displayed based on the setting (step S25).

  When the insertion page and the body page are set in the same paper feed tray (step S23; Yes), or when the paper used in the image forming job is not OHP paper (step S28; No), the control unit 110 The display state of all paper feed tray buttons is set to a selectable state (step S30), and the paper feed tray selection screen is displayed based on the setting (step S25).

  In this way, when the inter sheet mode is set, even if the paper of the insertion page is an expensive paper, the paper feed tray button as information indicating the paper is displayed in a non-selectable state. Since there is no possibility that the paper is used for cleaning the fixing unit, the cost of the paper used for cleaning can be reduced.

  Further, since the paper feed tray button as information indicating tab paper or OHP paper as special paper is displayed in a non-selectable state, there is no possibility that the special paper will be used for cleaning the fixing unit. The cost of the paper used can be reduced.

  Note that the cleaning sheet setting process may be a combination of the flowcharts shown in FIGS.

  As described above, according to the present embodiment, the display state of the paper feed tray buttons B22a to B22c on the paper feed tray selection screen G2 can be controlled based on the state of the image forming job. The paper used for cleaning is restricted from accepting instructions for selecting the paper feed tray, and the paper used for cleaning the fixing unit is optimized and the cost and work efficiency are reduced. Improvements can be made.

  Further, the present invention is not limited to the contents of the above embodiment, and can be appropriately changed without departing from the gist of the present invention.

1 is a schematic cross-sectional configuration diagram of an image forming apparatus in the present embodiment. 2 is a control block diagram of the image forming apparatus. FIG. It is a flowchart of a cleaning paper setting process. It is a flowchart of a cleaning paper setting process. It is a flowchart of a cleaning paper setting process. It is an example of a cleaning selection screen. It is an example of a paper feed tray selection screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 1a Main part 1b Printer controller 2 External apparatus 3 Network 11 Controller control part 12 DRAM control IC
13 Image memory 14 LANIF
20 Image Reading Unit 21 Automatic Document Feeding Unit 22 Reading Unit 22a CCD
30 Operation display unit 31 LCD
32 touch panel 40 print unit 41 paper feed unit 41a paper feed tray 41b paper feed means 42 paper feed transport unit 42a registration roller 42b secondary transfer rollers 43, 43Y, 43M, 43C, 43K image forming unit 43a cleaning unit 43b intermediate transfer belt 44 Fixing unit 44a Rotating fixing member 44b Pressure roller 45 Unloading unit 100 Image control board 110 Control unit 120 Non-volatile memory 130 RAM
140 Reading processing unit 150 Compression IC
160 DRAM control IC
170 Image memory 171 Compression memory 172 Page memory 180 Decompression IC
190 Writing processing unit 200 Image reading control unit 300 Operation display control unit 400 Print control unit B11 “Yes” button B12 “No” button B21 Paper passing number setting unit B22a to B22c Paper feed tray button B23 OK button B24 Cancel button d Original G1 Cleaning selection screen G2 Paper feed tray selection screen N Nip M1 Message display area T1 Document tray T2 Manual feed tray T3 Paper discharge tray

Claims (9)

A plurality of paper feed trays storing paper for each preset type;
A fixing unit for fixing the toner image on the paper on which the toner image is formed;
A control unit for supplying a sheet from the sheet feeding tray and cleaning the fixing unit;
A display unit for displaying information indicating paper stored in each of the plurality of paper feed trays during the cleaning;
With
The controller is
Depending on the state of the image forming job at the time of the cleaning, the paper used for the cleaning is limited ,
According to the state of the image forming job at the time of the cleaning, information indicating a sheet that can accept a selection instruction is displayed on the display unit,
A screen that displays a list of information indicating the sheets stored in the paper feed tray is displayed on the display unit, and the acceptance of the selection instruction is limited on the screen according to the state of the image forming job at the time of the cleaning. The information indicating the paper to be selected and the information indicating the paper for which acceptance of the selection instruction is not restricted are displayed in different expressions,
When the state of the image forming job is the state of an interrupt job executed by interrupting execution of another job temporarily,
An image forming apparatus that displays information indicating a sheet set in a job interrupted by the interrupt job displayed on the display unit in an expression that restricts acceptance of a selection instruction . A plurality of paper feed trays storing paper for each preset type;
A fixing unit for fixing the toner image on the paper on which the toner image is formed;
A control unit for supplying a sheet from the sheet feeding tray and cleaning the fixing unit;
A display unit for displaying information indicating paper stored in each of the plurality of paper feed trays during the cleaning;
With
The controller is
Depending on the state of the image forming job at the time of the cleaning, the paper used for the cleaning is limited ,
According to the state of the image forming job at the time of the cleaning, information indicating a sheet that can accept a selection instruction is displayed on the display unit,
A screen that displays a list of information indicating the sheets stored in the paper feed tray is displayed on the display unit, and the acceptance of the selection instruction is limited on the screen according to the state of the image forming job at the time of the cleaning. The information indicating the paper to be selected and the information indicating the paper for which acceptance of the selection instruction is not restricted are displayed in different expressions,
When the state of the image forming job is a state where there is a reserved job to be executed after completion of the execution of the image forming job,
An image forming apparatus that displays information indicating a sheet set in the reserved job displayed on the display unit in an expression that restricts acceptance of a selection instruction . A plurality of paper feed trays storing paper for each preset type;
A fixing unit for fixing the toner image on the paper on which the toner image is formed;
A control unit for supplying a sheet from the sheet feeding tray and cleaning the fixing unit;
A display unit for displaying information indicating paper stored in each of the plurality of paper feed trays during the cleaning;
With
The controller is
Depending on the state of the image forming job at the time of the cleaning, the paper used for the cleaning is limited ,
According to the state of the image forming job at the time of the cleaning, information indicating a sheet that can accept a selection instruction is displayed on the display unit,
A screen that displays a list of information indicating the sheets stored in the paper feed tray is displayed on the display unit, and the acceptance of the selection instruction is limited on the screen according to the state of the image forming job at the time of the cleaning. The information indicating the paper to be selected and the information indicating the paper for which acceptance of the selection instruction is not restricted are displayed in different expressions,
When the state of the image forming job is no longer in the paper feed tray in which the paper used in the image forming job is stored, the paper is stored in the same size as the paper. If the function that feeds paper from the tray and continues job execution is stopped,
An image forming apparatus that displays only information indicating a sheet in use in the image forming job displayed on the display unit in an expression that does not restrict acceptance of a selection instruction . A plurality of paper feed trays storing paper for each preset type;
A fixing unit for fixing the toner image on the paper on which the toner image is formed;
A control unit for supplying a sheet from the sheet feeding tray and cleaning the fixing unit;
A display unit for displaying information indicating paper stored in each of the plurality of paper feed trays during the cleaning;
With
The controller is
Depending on the state of the image forming job at the time of the cleaning, the paper used for the cleaning is limited ,
According to the state of the image forming job at the time of the cleaning, information indicating a sheet that can accept a selection instruction is displayed on the display unit,
A screen that displays a list of information indicating the sheets stored in the paper feed tray is displayed on the display unit, and the acceptance of the selection instruction is limited on the screen according to the state of the image forming job at the time of the cleaning. The information indicating the paper to be selected and the information indicating the paper for which acceptance of the selection instruction is not restricted are displayed in different expressions,
When the state of the image forming job is a state in which an insertion mode for inserting a sheet stored in a preset sheet feeding tray into an image-formed sheet is set,
An image forming apparatus that displays information indicating paper stored in the preset paper feed tray displayed on the display unit in an expression that restricts acceptance of a selection instruction . A plurality of paper feed trays storing paper for each preset type;
A fixing unit for fixing the toner image on the paper on which the toner image is formed;
A control unit for supplying a sheet from the sheet feeding tray and cleaning the fixing unit;
A display unit for displaying information indicating paper stored in each of the plurality of paper feed trays during the cleaning;
With
The controller is
Depending on the state of the image forming job at the time of the cleaning, the paper used for the cleaning is limited ,
According to the state of the image forming job at the time of the cleaning, information indicating a sheet that can accept a selection instruction is displayed on the display unit,
A screen that displays a list of information indicating the sheets stored in the paper feed tray is displayed on the display unit, and the acceptance of the selection instruction is limited on the screen according to the state of the image forming job at the time of the cleaning. The information indicating the paper to be selected and the information indicating the paper for which acceptance of the selection instruction is not restricted are displayed in different expressions,
When the state of the image forming job is a special sheet used in the image forming job,
An image forming apparatus that displays information indicating the special sheet displayed on the display unit in an expression that restricts acceptance of a selection instruction . An input unit that receives a selection instruction of a sheet to be used at the time of cleaning and outputs a sheet selection signal based on the selection instruction to the control unit;
The controller is
Depending on the state of the image forming job at the time of the cleaning, the paper selection signal input from the input unit is enabled or disabled.
The image forming apparatus according to any one of claims 1 to 5 . The controller is
When the state of the image forming job is a state where there is a reserved job to be executed after completion of the execution of the image forming job,
Displaying information indicating the paper set in the reserved job displayed on the display unit in an expression that restricts acceptance of selection instructions;
The image forming apparatus according to claim 1 . The controller is
When the state of the image forming job is a special sheet used in the image forming job,
Displaying the information indicating the special paper displayed on the display unit in an expression that restricts acceptance of selection instructions;
The image forming apparatus according to claim 4 . The special paper is either tab paper or OHP paper,
The image forming apparatus according to claim 5 .

Images