Printing system including static eliminator, control method of the same, and program

Abstract

To solve such a problem that electrostatic adsorption may be caused due to charging if unnecessary or inappropriate static elimination processing is performed although a voltage value applied for static elimination has an appropriate value according to a use environment and a sheet.SOLUTION: A printing system includes: printing means which executes printing processing on a sheet to be used in a print job; static elimination means which performs static elimination processing on the sheet on which printing is performed by the printing means; an operation part; display means which displays the setting state of the static elimination processing of the static elimination means on the operation part; and confirmation means which displays on the operation part a screen for confirming the continuation possibility of printing with a user on the basis of the necessity of the static elimination processing of the sheet to be used in the print job and the setting state of the static elimination processing of the static elimination means.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a printing system including a static eliminator that eliminates static electricity from a charged sheet, and a control method and program for the printing system. [Background technology]

[0002] The sheets used in printing work are transported with static electricity, either due to residual charge during the electrophotographic process or slight friction with the transport rollers and guides that occurs during sheet transport. This static electricity can cause sheets of paper to stick together. It can also cause dust and paper powder to adhere to the finished product, reducing the quality of the finished product. Here, sheets such as plain paper have a low electrical resistance and charges move easily within the sheet, so the charge itself is small and the charge is quickly eliminated. On the other hand, sheets made of synthetic resin (plastic), such as cardboard, synthetic paper, and coated paper, have a high electrical resistance and charge movement is difficult within the sheet. As a result, sheets such as synthetic paper and coated paper tend to be more likely to become charged and to retain charge. In addition, it is generally known that sheets are easily affected by the environment, especially humidity, and that the lower the humidity, the less discharged the charge is into the air, making them more likely to become charged with static electricity. If post-processing is performed while the sheets are stuck together, it will not only affect the sheet alignment process and reduce the quality of the post-processing, but it may also induce jams due to poor paper feeding or transport during post-processing, and may damage the sheets and equipment. Therefore, in order to prevent such a problem from occurring, it is desirable to remove static electricity from the sheet after the printing process before carrying out post-processing.Therefore, a method has been proposed in which a voltage is applied to a pair of transport rollers located downstream in the sheet transport direction to cancel the charge on the sheet (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-258881 Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of static elimination using a configuration in which a voltage is applied to a transport roller (hereinafter referred to as a "static elimination roller"), a charge opposite to the charge on the sheet is applied to the sheet via the static elimination roller, thereby canceling the static electricity. Therefore, static elimination control using the static elimination roller (application of a charge opposite to that of the sheet to the static elimination roller) needs to be performed according to the amount of charge on the sheet. In other words, this means that the charge adjustment for static elimination is necessary to be optimal for each printing environment such as humidity and each brand of paper. If static elimination control is performed on the sheet in an inappropriate charge adjustment state, it may result in charging of the sheet, which may further lead to sticking of the sheet. SUMMARY OF THE DISCLOSURE In view of the above problems, an object of the present invention is to provide a printing system capable of appropriately removing static electricity depending on the type of sheet after image formation. [Means for solving the problem]

[0005] The present invention is a printing system comprising a printing means for executing a printing process on a sheet used in a print job, a discharge means for performing a discharge process on the sheet printed by the printing means, and an operation unit, the printing system comprising: a display means for displaying a setting state of the discharge process of the discharge means on the operation unit; and a confirmation means for displaying a screen on the operation unit to confirm with a user whether or not to continue printing based on the need for discharge process of the sheet used in the print job and the setting state of the discharge process of the discharge means. Effect of the Invention

[0006] In view of the above-mentioned problems, an object of the present invention is to provide a printing system capable of appropriately removing static electricity from a sheet after an image is formed thereon. [Brief description of the drawings]

[0007] [Figure 1] Overall configuration of a printing system according to an embodiment [Diagram 2] FIG. 1 is a hardware configuration diagram of a printing apparatus according to an embodiment of the present invention. [Diagram 3] Cross-sectional view of a printing system according to an embodiment. [Figure 4] Operation unit of the printing device of the embodiment [Diagram 5] Hardware configuration diagram of the static eliminator according to the embodiment [Figure 6] Operation unit of the static eliminator according to the embodiment [Figure 7] Schematic diagram for explaining the static elimination process of the embodiment [Figure 8] Processing flow of the printing system according to the embodiment [Figure 9] Decision flow for asking the user whether to start printing in the embodiment [Figure 10] Status confirmation screen of the embodiment [Figure 11] Print start confirmation screen of the embodiment DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. However, the components described in the embodiment are merely examples, and are not intended to limit the scope of the present invention.

[0009] <Embodiment 1> Overall configuration of the printing system 1 shows the overall configuration of this embodiment, which includes a printing system 1000 and a client computer 102 (hereinafter referred to as "PC"), which are connected to each other via a network 101. The PC 102 is capable of transmitting PDL (Page Description Language) code data, which is a print job, to the printing system 1000 via the network 101.

[0010] Printing device hardware configuration Next, the hardware configuration of the printing system 1000 will be described with reference to the system block diagram of FIG. The printing system 1000 includes a printing apparatus 100, which is enclosed by a dotted line in the figure, and a sheet processing apparatus 200. Any number of sheet processing apparatuses 200 can be connected to the printing apparatus 100. In this embodiment, the printing apparatus 100 will be described as an example of an MFP (Multi-Function Peripheral) that is a multifunction machine having multiple functions such as a copy function and a printer function. However, the printing apparatus 100 may be a single-function printing apparatus having only a copy function or only a printer function. In this embodiment, as an example, the printing system 1000 is assumed to have various components described below.

[0011] The printing system 1000 is configured so that sheet processing for sheets printed by the printing device 100 can be performed by a sheet processing apparatus 200 connected to the printing device 100. However, it is also possible to configure the printing system 1000 using only the printing device 100 without connecting the sheet processing apparatus 200. The sheet processing apparatus 200 is configured to be able to communicate with the printing apparatus 100, and can receive instructions from the printing apparatus 100 and execute sheet processing as described below. A scanner unit 201 reads an image on a document, converts it into image data, and transfers it to other units. The external I / F 202 transmits and receives data to and from other devices connected to the network 101 . The printer unit 203 prints an image based on the input image data onto a sheet. 4, the operation unit 204 has a hard key input unit 402 and a touch panel unit 401, and receives instructions from a user via them. The operation unit 204 also displays various information on the touch panel unit 401 that the operation unit 204 has. The control unit 205 is a CPU (Central Processing Unit) and controls the overall processing and operation of various units included in the printing system 1000. In other words, it also controls the operation of the printing apparatus 100 and the sheet processing apparatus 200 connected to the printing apparatus 100. The ROM 207 stores various computer programs executed by the control unit 205. For example, the ROM 207 stores programs for causing the control unit 205 to execute various processes in flowcharts described below, and display control programs required to display various setting screens described below. The ROM 207 also stores programs for the control unit 205 to interpret PDL code data received from the PC 102 and expand it into raster image data. The ROM 207 also stores a boot sequence, font information, and the like. The RAM 208 stores image data and PDL code data sent from the scanner unit 201 and the external I / F 202, various programs loaded from the ROM 207, and setting information. The RAM 208 also stores information related to the sheet processing apparatus 200 (such as information related to the type and function of each sheet processing apparatus 200 connected to the printing apparatus 100). The control unit 205 uses the information related to the sheet processing apparatus 200 stored in the RAM 208 for control. The HDD (hard disk drive) 209 is composed of a hard disk, a drive unit for reading and writing data to the hard disk, and the like. The HDD 209 is a large-capacity storage device for storing image data input from the scanner unit 201 and compressed by the compression / decompression unit 210. The control unit 205 can print image data stored in the HDD 209 by the printer unit 203 based on an instruction from a user. The HDD 209 is also used as a spooler, and the control unit 205 can manage PDL code data received from the PC 102 as a print job and store it in the HDD 209. The control unit 205 can also manage the print jobs stored in the HDD 209, and can also acquire the number of print jobs stored and setting information made for the print jobs. The compression / decompression unit 210 compresses and decompresses image data stored in the RAM 208 and HDD 209 using various compression methods such as JBIG and JPEG.

[0012] Printing system configuration Next, the configuration of the printing system 1000 will be described with reference to Fig. 3. Fig. 3 is a cross-sectional view of the printing device 100 and the sheet processing device 200 connected to the printing device 100. In this embodiment, the sheet processing device is configured to include a static eliminator 200-3a and a saddle stitching machine 200-3b. (Printing device) First, the printing device 100 will be described. An automatic document feeder (ADF) 301 separates a stack of documents set on a loading surface of a document tray in page order, starting with the first page, and conveys the documents onto a document glass platen for scanning by a scanner 302 . The scanner 302 reads an image of a document conveyed onto a glass platen, and converts the image into image data by a CCD. A rotating polygon mirror (polygon mirror or the like) 303 causes a light beam, such as a laser beam, modulated according to image data to enter the rotating polygon mirror 303, and irradiates the light beam as reflected scanning light onto a photosensitive drum 304 via a reflecting mirror. A latent image formed on the photosensitive drum 304 by the laser beam is developed with toner, and the toner image is transferred to a sheet attached on the transfer drum 305. A full-color image is formed by sequentially executing this series of image formation processes for yellow (Y), magenta (M), cyan (C), and black (K) toners. After four image formation processes, the sheet on the transfer drum 305 with the full-color image formed thereon is separated by a separation claw 306 and conveyed to a fixing unit 308 by a pre-fixing conveyor 307. The fixing unit 308 is made up of a combination of rollers and belts, and has a built-in heat source such as a halogen heater, and melts and fixes the toner on the sheet onto which the toner image has been transferred, by using heat and pressure. The discharge flapper 309 is configured to be swingable about a swing shaft and determines the conveying direction of the sheet. When the discharge flapper 309 swings clockwise in the figure, the sheet is conveyed straight and is discharged outside the apparatus by the discharge rollers 310. The control unit 205 controls the printing device 100 to perform single-sided printing through the above-described series of sequences.

[0013] On the other hand, when images are to be formed on both sides of the sheet, the discharge flapper 309 swings counterclockwise in the figure, and the sheet is changed course downward and sent to the double-sided conveying section. The double-sided conveying section includes an inversion flapper 311 , an inversion roller 312 , an inversion guide 313 , and a double-sided tray 314 . The reversing flapper 311 swings around a swinging shaft to determine the conveying direction of the sheet. When processing a double-sided printing job, the control unit 205 controls the reversing flapper 311 to swing the sheet, whose first side has been printed by the printer unit 203, in the counterclockwise direction in the figure, and to feed the sheet to the reversing guide 313 via the reversing roller 312. Then, the reversing roller 312 is stopped once with the rear end of the sheet being pinched by the reversing roller 312, and the reversing flapper 311 continues to swing in the clockwise direction in the figure. The reversing roller 312 is also rotated in the reverse direction. As a result, the sheet is switched back and conveyed, and the sheet is controlled to be guided to the double-sided tray 314 with the rear end and the front end of the sheet switched. The double-sided tray 314 temporarily stacks the sheet, and then the sheet is fed again to the registration roller 316 by the re-feed roller 315. At this time, the sheet is fed with the side opposite to the transfer process of the first side facing the photosensitive drum. Then, in the same manner as the process described above, a second image is formed on the second side of the sheet. Then, images are formed on both sides of the sheet, and the sheet undergoes a fixing process and is discharged from inside the main body of the printer 100 to the outside of the machine via the paper discharge rollers 310. The control unit 205 controls the printer 100 to perform double-sided printing through the above-mentioned series of sequences. Printing device 100 also has a paper feed section that stores sheets required for printing processing. The paper feed section includes paper feed cassettes 317 and 318 (each capable of storing, for example, 500 sheets), paper feed deck 319 (capable of storing, for example, 5,000 sheets), and manual feed tray 320. Paper feed cassettes 317 and 318 and paper feed deck 319 can be used to set various sheets of different sizes and materials separately for each paper feed section. Furthermore, various types of sheets including special sheets such as overhead projector sheets can be set in manual feed tray 320.

[0014] (static eliminator) Next, the static eliminator 200-3a will be described. First, Fig. 5 is a block diagram of the hardware configuration of the static eliminator 200-3a. The static eliminator 200-3a also has a control unit 501 separate from the printer 100, and this control unit 501 controls the entire static eliminator 200-3a while communicating with the control unit 205 of the printer 100 in Fig. 2 via a bus (not shown). FIG. 6 shows the configuration of the operation unit 502. A user can perform settings for the static eliminator 200-3a via the operation unit 502. The mode setting switch 601 switches whether or not (ON / OFF) static elimination is performed by the static elimination device 200-3a, and the control unit 501 controls the static elimination processing unit 503 described later to execute the static elimination processing only when the switch is ON. The adjustment dial 602 is configured as a thumb rotary switch and adjusts the strength of the static elimination control performed when the mode setting switch 601 is ON. It is controlled by the control unit 501 so that it is effective only when the mode setting switch 601 is ON. The static elimination processing unit 503 is composed of a static elimination roller 322 and an ionizer 323, which will be described later, and a voltage application controller 321 for each of them, and is responsible for eliminating static electricity from the conveyed sheet. The control unit 501 realizes control of applying voltage to the static elimination roller 322 and the ionizer 323 via the voltage application controller 321 . The ROM 504 stores a boot program for the static elimination device 200-3a, a control program for the operation unit 205, a static elimination processing program for the static elimination processing unit 503, etc. Then, the control unit 501 loads the necessary programs from the ROM 504 into the RAM 505 and executes them.

[0015] [Static charge removal process] Here, the charge removal process performed by the charge removal unit 503 will be described with reference to FIG. FIG. 7 is a diagram showing a schematic diagram of a state in which a static elimination process is performed in the static elimination device 200-3a on a sheet of paper that has been printed by the printing device 100. In FIG. First, the sheet 701 is transported to a developing / transferring section consisting of a photosensitive drum 304 and a transfer drum 305 via a transport path 502, and toner is placed on the sheet 701. The charged toner 702 placed on the sheet 701 is negatively charged, and the sheet 701 is then transported to the charge removing device 200-3a with the print surface 703 side negatively charged after being fixed through a fixing device 308. The charge removing device 200-3a is equipped with a positively charged charge removing roller 322, and applies a positive charge to the negatively charged print surface 703 by contact charge removal with the roller, thereby eliminating the charging state. However, it is assumed that the negative charge that could not be removed by the charge removal process by the charge removing roller 322, or the oppositely charged positive charge, remains on the sheet 705 after passing through the charge removing roller. Therefore, the charge removing device 200-3a in this embodiment is further configured to be equipped with an ionizer 323 downstream of the charge removing roller 322. The ionizer 323 is a device that applies a voltage to an electrode needle provided in the device to generate a corona discharge, and uses the ions thus generated to eliminate the charge. In this way, the static elimination roller 322 performs rough static elimination, and the ionizer adjusts the remaining charge, so that the static elimination process is performed on the sheet 707 discharged from the static elimination device 200-3a, and the charge is eliminated. Returning to the explanation using the cross-sectional view of Fig. 3, the static eliminator 200-3a has a static elimination roller 322 and a pair of rollers, and the sheet transported to the static eliminator 200-3a is transported while being sandwiched between the two rollers, and the above-mentioned static elimination is performed by the static elimination roller 322. Thereafter, the sheet is transported outside the device by the transport roller 324, and the residual charge is eliminated by the ionizer 323.

[0016] (Saddle stitching machine) Next, the saddle stitching machine 200-3b will be described with reference to Fig. 3. The sheet processing by the saddle stitching machine 200-3b includes, for example, saddle stitching, punching, cutting, shift discharge, folding, stapling, etc. Here, these jobs are called "saddle stitching jobs". When processing a saddle stitching job, the control unit 205 first conveys the sheets of this job printed by the printing device 100 to the saddle stitching machine 200-3b, and then the control unit 205 causes the saddle stitching machine 200-3b to execute sheet processing of this job. Then, the control unit 205 causes the printed matter of the saddle stitching job that has been subjected to sheet processing by the saddle stitching machine 200-3b to be held in the paper discharge destination Z of the saddle stitching machine 200-3b. Note that there are multiple paper discharge destination candidates for the paper discharge destination Z. This is used when the saddle stitching machine 200-3b can execute multiple types of sheet processing and a paper discharge destination is divided for each sheet processing. In this embodiment, a detailed description of the conveying procedure of the saddle stitching job is omitted.

[0017] Printing process Next, the processing in this printing system will be described with reference to the flowchart in Fig. 8. The processing of each step in the flowchart in Fig. 8 is realized by the control unit 205 reading a program stored in the ROM 207 or HDD 209 into the RAM 208 and executing it. Each processing step will be represented by "S" below. First, in S801, the control unit 205 of the printing device 100 acquires the setting state (ON or OFF) of the static elimination process of the static elimination device 200-3a. This step is realized by the control unit 501 of the static elimination device 200-3a, which has received an inquiry from the control unit 205 of the printing device 100, acquiring the state of the mode setting switch 601 of the operation unit 502 of the static elimination device 200-3a and returning the state to the control unit 205 of the printing device 100. Next, in S802, the control unit 205 of the printing apparatus 100 displays the setting state (ON / OFF) of the static elimination process of the static elimination device 200-3a acquired in S801 on the operation unit 204 of the printing apparatus 100. Specifically, when the setting state of the static elimination process of the static elimination device 200-3a acquired in S801 is ON, the control unit 205 of the printing apparatus 100 displays on the operation unit 204 that the setting of the static elimination process is ON (enabled). On the other hand, when the setting state of the static elimination process of the static elimination device 200-3a acquired in S801 is OFF, the control unit 205 of the printing apparatus 100 displays on the operation unit 204 that the setting of the static elimination process is OFF (disabled). FIG. 10 shows a status confirmation screen 1001 that notifies the user of the system status of the printing system 1000. The status confirmation screen 1001 of FIG. 10 is an example that displays that the setting state of the static elimination process is ON. Area 1002 is an area that displays events that should be notified to the user among events occurring in the printing system 1000, and can display a list of multiple events. Area 1003 is positioned in a similar manner, but this area is always displayed even if you move to another screen. However, it can only display one event, and if multiple events occur, the display can be toggled to display multiple events. Through such a screen, the printing system 1000 is configured to be able to notify the user whether the setting state of the static elimination process in the static elimination device 200-3a is on (ON) or off (OFF).

[0018] Next, in S803, the control unit 205 of the printing device 100 determines whether a print job has been submitted. If a print job has not been submitted (if NO is determined in S803), the process returns to S801 and continues to display the setting state (ON / OFF) of the static electricity removal process. On the other hand, if it is determined that a print job has been submitted (if YES is determined in S803), the process proceeds to S804. In S804, the control unit 205 of the printing device 100 interprets the settings of the print job and identifies the sheets to be used for printing. In the next step S805, it is determined whether or not the print job requires confirmation from the user as to whether or not printing can be started. (Processing to determine whether or not to ask the user for confirmation as to whether or not to start printing) The process of S805 will now be described with reference to the flowchart of Fig. 9. The process of each step in the flowchart of Fig. 9 is realized by the control unit 205 reading a program stored in the ROM 207 or HDD 209 into the RAM 208 and executing it. The process of S805 is to prevent the static elimination process from not being performed on a sheet that requires static elimination, or to prevent the static elimination process from being inappropriately performed on a sheet that does not require static elimination. First, in S901, the control unit 205 of the printing device 100 checks the setting state (ON / OFF) of the static elimination process acquired in S801. If it is determined that the setting state of the static elimination process is ON (ON: YES in S901), the control unit 205 of the printing device 100 advances the process to S902. In S902, it is determined whether the sheet identified in S804 is a sheet that requires static elimination processing. If it is determined that the sheet requires static elimination processing (YES in S902), the process proceeds to S903. In S903, since there is no problem in continuing printing as is, the control unit 205 of the printing device 100 determines that there is no need to confirm with the user, and ends the determination process. On the other hand, if it is determined in S902 that the charge removal process of the sheet is not necessary (NO in S902), the process proceeds to S905. Then, in S905, since performing the static elimination process on a sheet that does not require static elimination may result in the sheet becoming charged and causing the product to be electrostatically adsorbed, the control unit 205 of the printing device 100 determines that it is necessary to confirm with the user and terminates the determination process. Also, if it is determined in S901 that the setting state of the static elimination process is OFF (OFF: NO in S901), the process proceeds to S904. In S904, the control unit 205 of the printing apparatus 100 next determines whether or not the sheet identified in S804 is a sheet that requires static elimination processing. If it is determined in S904 that static elimination processing of the sheet is not required (NO in S904), the process proceeds to S903. In S903, since there is no problem in continuing printing as is, the control unit 205 of the printing device 100 determines that there is no need to confirm with the user, and ends the determination process. If the printing apparatus 100 determines that the sheet needs to be neutralized (YES in S904), the process proceeds to S905. Since there is a risk that the sheet that requires the static elimination process in S905 will be discharged without undergoing the static elimination process, the control unit 205 of the printing apparatus 100 determines that it is necessary to confirm with the user, and ends the determination process. In this way, the control unit 205 of the printing device 100 determines whether or not confirmation with the user is required. Note that a list of sheet types that require static elimination processing in the printing device 100 is specified in advance as a design item and is stored in the HDD 209. The determination of whether or not static elimination processing of the sheet is required, which is executed in S902 and S904, is realized by the control unit 205 of the printing device 100 referring to the list.

[0019] Returning to the flowchart of FIG. In S806, the control unit 205 of the printing device 100 refers to the result of S805 and determines whether it has been concluded that it is necessary to confirm with the user whether or not to continue printing, or whether or not it is not necessary. If it is determined in S806 that it is not necessary to confirm with the user whether or not to continue printing (NO in S806), the control unit 205 of the printing device 100 proceeds directly to the print processing in S809. On the other hand, if it is determined in S806 that it is necessary to confirm with the user whether or not to continue printing (YES in S806), the process proceeds to S807. In S807, the control unit 205 of the printing apparatus 100 suspends the start of the print job, and displays a screen 1101 as shown in Fig. 11 on the operation unit 204 of the printing apparatus 100 to ask the user whether or not to start printing. Fig. 11 shows an example of a screen to be displayed in a case where there is a risk that a static elimination process will be performed on a sheet that does not require static elimination (NO in S902). If the user wishes to continue the suspended printing after confirmation, or if the user wishes to instruct the suspension of the printing to continue again after turning on the static elimination process of the static elimination device 200-3a, the user presses a [Start Printing] button 1102. If the user wishes to cancel the printing, the user presses a [Cancel] button 1103. In S808, it is determined whether the [Start Printing] button 1102 on the print start confirmation screen 1101 in Fig. 11 has been pressed. If it is determined that the [Start Printing] button 1102 has been pressed (YES in S808), the process proceeds to S809 where printing is executed. On the other hand, if it is determined that the [Cancel] button 1102 has been pressed (NO in S808), the control unit 205 of the printing device 100 cancels the print job as instructed, and ends the process without doing anything. In S809, the control unit 205 of the printing apparatus 100 causes the printer unit 203 to execute printing in accordance with the instruction, and ends the process. By controlling the printing system 1000 including the static eliminator 200-3a in this manner, static elimination can be performed appropriately according to the type of sheet used for printing.

[0020] (Other Examples) In the above-described embodiment, an example has been described in which the control unit 205 of the printing device 100 displays the setting state (ON / OFF) of the static elimination process of the static elimination device 200-3a acquired in S801 on the operation unit 204 of the printing device 100. However, the present invention is not limited to this, and the control unit 205 may notify an external device (a personal computer or a mobile terminal) of the setting state (ON / OFF) of the static elimination process of the static elimination device 200-3a acquired in S801 and display it on a display unit of the external device. The present invention can also be realized by a process in which a program for implementing one or more of the functions of the above-described embodiments is supplied to a system or device via a network or a storage medium, and one or more processors in a computer of the system or device read and execute the program. The present invention can also be realized by a circuit (e.g., ASIC) that implements one or more of the functions. Furthermore, the present invention may be applied to a system made up of a plurality of devices, or to an apparatus made up of a single device. The present invention is not limited to the above-mentioned embodiments, and various modifications (including organic combinations of the embodiments) are possible based on the spirit of the present invention, and are not excluded from the scope of the present invention. In other words, the present invention includes all configurations that combine the above-mentioned embodiments and their modifications.

[0021] The disclosure of this embodiment includes the following configuration, method, and program. (Configuration 1) a printing means for executing a printing process on a sheet used in a print job; a charge removing unit that performs a charge removing process on the sheet printed by the printing unit; A printing system including an operation unit, a display unit that displays a setting state of the static elimination process of the static elimination unit on the operation unit; a confirmation unit that displays on the operation unit a screen for prompting a user to confirm whether or not to continue printing based on whether or not a charge erasing process is required for sheets used in the print job and a setting state of the charge erasing process of the charge erasing unit; A printing system comprising: (Configuration 2) The confirmation means is The printing system described in configuration 1 is characterized in that, when a sheet used in a print job is a sheet that does not require static electricity removal processing and the setting state of the static electricity removal processing is on, the print job is paused and a screen is displayed on the operation unit to confirm with the user whether or not to continue printing. (Configuration 3) The confirmation means is The printing system according to configuration 1 or 2, characterized in that, when a sheet used in a print job requires static electricity removal processing and the setting state of the static electricity removal processing is off, the print job is paused and a screen is displayed on the operation unit to confirm with the user whether or not to continue printing. (Configuration 4) 4. The printing system according to any one of configurations 1 to 3, wherein the printing means executes printing when a user issues an instruction to start printing via the screen. (Configuration 5) 5. The printing system according to any one of configurations 1 to 4, wherein the static elimination means is a static elimination roller and / or an ionizer. (Method 1) a printing means for executing a printing process on a sheet used in a print job; a charge removing unit that performs a charge removing process on the sheet printed by the printing unit; A control method for a printing system having an operation unit, comprising: a display step of displaying a setting state of the static elimination process of the static elimination means on the operation unit; a confirmation step of displaying a screen on the operation unit for prompting a user to confirm whether or not to continue printing based on whether or not a charge erasing process is required for sheets used in the print job and a setting state of the charge erasing process of the charge erasing unit; 13. A method for controlling a printing system comprising: (Program 1) A program for causing a computer to execute the printing system control method according to the first method. [Explanation of symbols]

[0022] 1000 Printing System 102 PC 100 Printing device 200-3a Static Elimination Device

Claims

1. a printing means for executing a printing process on a sheet used in a print job; a static elimination unit that performs static elimination processing on the sheet printed by the printing unit; a holding means for holding a list of types of sheets that require the static elimination process; A printing system including an operation unit, an acquisition unit that acquires a setting state of the static elimination process of the static elimination unit from the operation unit; a confirmation means for displaying on the operation unit a notification screen for confirming with a user whether or not to continue printing based on whether or not the type of sheet used in the print job is included in the list of sheet types stored in the storage means and the setting state of the static elimination process of the static elimination means acquired by the acquisition means, When the type of sheet used in the print job is not included in the list of sheet types held by the holding unit and the setting state of the static elimination process is ON, the notification screen is displayed on the operation unit; When the type of sheet used in the print job is included in the list of sheet types held by the holding unit and the setting state of the static elimination processing is OFF, the notification screen is displayed on the operation unit; If the type of sheet used in the print job is included in the list of sheet types held by the holding means and the setting state of the static elimination process is ON, the printing means continues without displaying the notification screen on the operation unit, If the type of sheet used in the print job is not included in the list of sheet types held by the holding means and the setting state of the static elimination process is off, the printing means continues without displaying the notification screen on the operation unit, a printing system that executes the printing means in response to an operation on the notification screen;

2. The confirmation means The printing system according to claim 1, characterized in that, when the type of sheet used in the print job is not included in the list of sheet types stored in the storage means and the setting state of the discharge processing is on, the print job is paused and the notification screen is displayed on the operation unit to confirm with the user whether or not to continue printing.

3. The confirmation means The printing system according to claim 1 or 2, characterized in that, when the type of sheet used in the print job is included in the list of sheet types stored in the storage means and the setting state of the anti-static treatment is off, the print job is paused and the notification screen for confirming with the user whether or not to continue printing is displayed on the operation unit.

4. 2. The printing system according to claim 1, wherein the printing unit executes printing when the user issues a command to start printing via the notification screen.

5. 2. The printing system according to claim 1, wherein the static elimination means is a static elimination roller and / or an ionizer.

6. A printing system as described in claim 1, characterized in that the setting status of the de-ionization process is displayed on the operation unit.

7. a printing means for executing a printing process on a sheet used in a print job; a static elimination unit that performs static elimination processing on the sheet printed by the printing unit; a holding means for holding a list of types of sheets that require the static elimination process; A control method for a printing system having an operation unit, an acquisition step of acquiring a setting state of the static elimination process of the static elimination means from the operation unit; a confirmation step of displaying a notification screen on the operation unit to ask a user whether or not to continue printing based on whether or not the type of sheet used in the print job is included in the list of sheet types stored in the storage means and the setting state of the static elimination process of the static elimination means acquired in the acquisition step, When the type of sheet used in the print job is not included in the list of sheet types held by the holding unit and the setting state of the static elimination process is ON, the notification screen is displayed on the operation unit; When the type of sheet used in the print job is included in the list of sheet types held by the holding unit and the setting state of the static elimination processing is OFF, the notification screen is displayed on the operation unit; If the type of sheet used in the print job is included in the list of sheet types held by the holding means and the setting state of the static elimination process is ON, the printing means continues without displaying the notification screen on the operation unit, If the type of sheet used in the print job is not included in the list of sheet types held by the holding means and the setting state of the static elimination process is off, the printing means continues without displaying the notification screen on the operation unit, A control method for a printing system, comprising: executing the printing means in response to an operation on the notification screen.

8. A program for causing a computer to execute the printing system control method according to claim 7.

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