Image forming device, and control method of image forming device

Abstract

To improve convenience in performing paper-registration.SOLUTION: An image forming device comprises: sensing means provided on a conveyance path through which paper is conveyed from paper feeding means to image forming means, the sensing means sensing a type of fed paper; storing means that stores paper information including a paper type about registered paper; image forming means that performs printing on paper using the paper information; and control means that, when registering paper in the storing means, searches for the paper information stored by the storing means on the basis of a paper type selected by a user and performs control so that a first process for displaying the found paper information is executed, and that, after the first process is executed, searches for the paper information stored by the storing means on the basis of a paper type sensed by the sensing means using the sensing means and performs control so that a second process for displaying the found paper information is executed.SELECTED DRAWING: Figure 8A

Description

[Technical Field]

[0001] The present invention relates to an image forming apparatus and a control method for an image forming apparatus. [Background technology]

[0002] In recent years, electrophotographic image forming devices have been equipped with media sensors (paper type detection sensors) that detect the surface texture and thickness of paper, and automatically determine the paper type based on the detection results of the media sensor to set image formation conditions and perform printing. Patent Document 1 also describes a technology for registering paper using a media sensor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-26815 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the technique described in Patent Document 1 requires the use of a media sensor every time paper is registered, which is a time-consuming process.

[0005] An object of the present invention is to improve convenience when registering paper. [Means for solving the problem]

[0006] The image forming apparatus of the present invention is characterized by having: a detection means provided on a transport path that transports paper from a paper feeding means to an image forming means, and detecting the type of paper fed; a storage means that stores paper information including the paper type for registered paper; an image forming means that prints on paper using the paper information; and a control means that, when registering paper in the storage means, controls to execute a first process that searches for the paper information stored in the storage means based on the paper type selected by a user and displays the searched paper information; and, after executing the first process, controls to execute a second process that uses the detection means to search for the paper information stored in the storage means based on the paper type detected by the detection means and displays the searched paper information. [Effects of the Invention]

[0007] According to the present invention, it is possible to improve the convenience when registering paper. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is a cross-sectional view of the image forming apparatus. [Figure 2] FIG. 2 is a block diagram showing a hardware configuration of the image forming apparatus. [Figure 3] FIG. [Figure 4] FIG. 2 is a diagram illustrating a configuration of a media sensor. [Figure 5] FIG. 10 is a diagram showing a paper management table. [Figure 6] FIG. 10 is an explanatory diagram of a method for creating paper information. [Figure 7] FIG. 10 is an explanatory diagram of a method for creating paper information. [Figure 8A] 10 is a flowchart showing a registration process related to a manual setting mode. [Figure 8B] 10 is a flowchart showing a display order change process. [Figure 8C] 10 is a flowchart showing a registration process related to an automatic setting mode. [Figure 9] 10 is a flowchart showing a registration process related to an automatic setting mode. [Figure 10A] FIG. 10 is a diagram showing an example of a screen displayed when registering paper information. [Figure 10B] FIG. 10 is a diagram showing an example of a screen displayed when registering paper information. [Figure 10C] FIG. 10 is a diagram showing an example of a screen displayed when registering paper information. [Figure 10D] FIG. 10 is a diagram showing an example of a screen displayed when registering paper information. [Figure 10E] FIG. 10 is a diagram showing an example of a screen displayed when registering paper information. [Figure 11] FIG. 10 is a diagram showing an example of a screen displayed when registering paper information. [Figure 12] FIG. 10 is a diagram showing an example of a screen displayed when registering paper information. DETAILED DESCRIPTION OF THE INVENTION

[0009] The following embodiments will be described with reference to the drawings. In the following embodiments, the same components will be denoted by the same reference numerals.

[0010] FIG. 1 shows an example of the cross-sectional configuration of an image forming apparatus 100 according to this embodiment. FIG. 2 is a block diagram showing an example of the hardware configuration of the image forming apparatus 100 according to this embodiment. The image forming apparatus 100 prints on paper, which is a print medium, using an electrophotographic method or an electrostatic recording method. Note that the printing method is not limited to the electrophotographic method or the electrostatic recording method, and other printing methods may also be used. First, the configuration and operation of the image forming apparatus 100 according to this embodiment will be described using FIGS. 1 and 2.

[0011] As shown in FIG. 2, the image forming apparatus 100 includes a CPU 10, a ROM 11, a RAM 12, an instruction / display unit 13, a media sensor 14, an image forming unit 17, a fixing unit 170, and paper feed cassette open / close sensors 180 and 181.

[0012] The CPU 10 is a control unit that controls the entire image forming apparatus 100. The ROM 11 stores a control program, initial values ​​of various setting values, etc. The CPU 10 reads the control program stored in the ROM 11 into the RAM 12 and executes it, thereby realizing the processes shown in the flowcharts described below.

[0013] RAM 12 stores various types of information under the control of CPU 10. As will be described in detail later, RAM 12 stores paper information including paper type and its setting values. The setting values ​​correspond to print control parameters. In this embodiment, RAM 12 stores a paper management table 1201 (see FIG. 5) that holds paper information. CPU 10 creates new paper information for user-defined paper in accordance with user instructions and registers it in paper management table 1201. The method for creating paper information for user-defined paper will be described later.

[0014] The instruction / display unit 13 includes a panel, buttons, etc. that can display an operation screen, and when a user inputs an instruction such as to start a print operation, the instruction information is sent to the CPU 10. Note that the instruction information such as to start a print operation may be input by the user operating the instruction / display unit 13, or may be input from an external device such as a personal computer, tablet terminal, or smartphone connected via a network (not shown). When the instruction information to start a print operation is input, the CPU 10 drives and controls a paper feed / conveyance motor (not shown) in accordance with the instruction information to feed and convey paper.

[0015] Furthermore, CPU 10 sets print control parameters for image forming unit 17, thereby controlling image formation (printing) by image forming unit 17. Image forming unit 17 prints on paper based on the print control parameters set by CPU 10. Image forming unit 17 is configured to include cartridges 120a-120d, intermediate transfer belt 130, primary transfer units 123a-123d, secondary transfer unit 140, and laser scanners 122a-122d shown in FIG. 1. Image forming unit 17 drives cartridges 120a-120d, intermediate transfer belt 130, primary transfer units 123a-123d, secondary transfer unit 140, and the laser scanners 122a-122d in accordance with the print control parameters.

[0016] The CPU 10 also controls the fixing unit 170 for fixing the image formed by the image forming unit 17, and monitors the sensor output from the paper feed cassette open / close sensors 180 and 181, which are open / close detection sensors that detect the open / closed state of the paper feed cassette. The CPU 10 can detect the open / closed state of the paper feed cassette based on the sensor output from the paper feed cassette open / close sensors 180 and 181.

[0017] The media sensor 14 is a paper type detection sensor that is provided on the paper transport path and detects the type of paper fed through the paper transport path. In this embodiment, the media sensor 14 measures the surface texture, basis weight, etc. of the paper being transported.

[0018] The media sensor 14 has an ultrasonic sensor 19, an optical sensor 20, and an information processing unit 18. The information processing unit 18 issues measurement instructions to the ultrasonic sensor 19 and the optical sensor 20 and processes the measurement results of the ultrasonic sensor 19 and the optical sensor 20.

[0019] The information processing unit 18 performs a measurement sequence under the control of the CPU 10. The ultrasonic sensor 19 performs measurement using ultrasonic waves and outputs a voltage corresponding to the ultrasonic output. The information processing unit 18 then calculates the transmittance from the output voltage when paper is present and calculates the basis weight from the transmittance. The optical sensor 20 is a CIS (Contact Image Sensor), and the imaging results obtained by the CIS are stored in the information processing unit 18 as brightness values ​​for each pixel, and are then converted by the information processing unit 18 into adjacent pixel difference values ​​and brightness surface property information.

[0020] The information processing unit 18 sends the surface property information and basis weight to the CPU 10. The surface property information identifies the paper type, such as fine paper, recycled paper, or coated paper. The CPU 10 then searches the paper management table 1201 (see FIG. 5) for the same or similar paper information based on the surface property information and basis weight.

[0021] Next, a basic image forming operation will be described with reference to FIGS. When an instruction to start a print operation is input from the instruction / display unit 13 or the like, the CPU 10 starts the operation of feeding paper from the specified paper feed cassette. In the case of paper feed cassette 220 of the image forming apparatus 100 shown in FIG. 1, the CPU 10 drives a paper feed transport motor (not shown) that serves as the drive source for paper feed pickup roller 151. This causes paper feed pickup roller 151 to rotate, and paper sheets in paper feed cassette 220 are fed and transported one by one along the paper transport path. In the case of paper feed cassette 221, the CPU 10 drives a paper feed transport motor (not shown) that serves as the drive source for paper feed pickup roller 152. This causes paper feed pickup roller 152 to rotate, and paper sheets in paper feed cassette 221 are fed and transported one by one along the paper transport path.

[0022] The CPU 10 sets the image formation speed and the target temperature of the fixing unit 170 according to the type of paper being conveyed, identified using the media sensor 14, or the type of paper set from the instruction / display unit 13. Regarding the image formation speed, the CPU 10 controls image formation and conveyance at a speed predetermined for the material, such as when the image formation speed (conveyance speed) for plain paper or thin paper is 1, and image formation is performed at half the speed for thick paper. Furthermore, the CPU 10 sets the target temperature of the fixing unit 170 to a lower temperature for thin paper and a higher temperature for thick paper, compared to plain paper.

[0023] Furthermore, the CPU 10 starts the image forming operation by the cartridges 120a, 120b, 120c, and 120d so as to be ready in time for the paper to arrive at the secondary transfer unit 140. The cartridge 120a is for forming a yellow image. The cartridge 120b is for forming a magenta image. The cartridge 120c is for forming a cyan image. The cartridge 120d is for forming a black image. These cartridges 120a to 120d are configured to be attachable and detachable by the user.

[0024] After the surface of the photoconductor is charged by the charging roller, a latent image is formed on the photoconductor by lasers emitted from laser scanners 122a-122d. The formed latent image is then developed on the photoconductor by toner in a developing device. After that, a primary transfer voltage is applied to the developed toner image at primary transfer units 123a-123d shown in FIG. 1, and the toner image is transferred to intermediate transfer belt 130 shown in FIG. 1. The toner image transferred to intermediate transfer belt 130 reaches secondary transfer unit 140 as intermediate transfer belt 130 rotates.

[0025] CPU 10 detects the position of the paper transported by transport rollers 155 by monitoring the output from pre-register transport sensor 160. CPU 10 then takes into consideration the timing when the leading edge of the paper reaches pre-register transport sensor 160 and controls the transport of the paper so that the leading edge of the paper and the leading edge of the toner image on intermediate transfer belt 130 coincide at secondary transfer unit 140. For example, if the paper arrives earlier than the toner image, CPU 10 stops the paper at pre-register transport rollers 161 for a predetermined time and then resumes transport.

[0026] As described above, a secondary transfer voltage is applied to the paper and toner image that have reached secondary transfer unit 140, whereby the toner image is transferred onto the paper. After secondary transfer, the paper is transported to fixing unit 170. Details of fixing unit 170 will be described later.

[0027] After the toner image on the paper is heated and fixed to the paper by the fixing unit 170, the CPU 10 causes the paper to be further conveyed downstream of the device. When the leading edge of the paper after fixing reaches the paper conveyance sensor 171, the CPU 10 determines whether to convey the paper to paper conveyance path 230 or paper conveyance path 231, in accordance with an instruction previously specified by the instruction / display unit 13. Then, in accordance with this determination, the CPU 10 switches the conveyance destination of the paper by switching the conveyance flapper 172. For example, when the instruction from the instruction / display unit 13 is a double-sided printing instruction and the front side is being printed, the CPU 10 conveys the paper to paper conveyance path 230, and when the instruction from the instruction / display unit 13 is a double-sided printing instruction and the front side is being printed, the CPU 10 conveys the paper to paper conveyance path 231.

[0028] When the paper is conveyed to paper conveyance path 231, the conveyed paper is conveyed further downstream by conveyance rollers 232 and discharged to paper discharge tray 196. On the other hand, when the paper is conveyed to paper conveyance path 230, the paper is conveyed by reversing conveyance rollers 162 located downstream and drawn into reversing unit A. After the paper is drawn into reversing unit A, CPU 10 switches conveyance flapper 173 and reverses the rotation of reversing conveyance rollers 162 to switch back the paper and convey the paper toward secondary transfer unit 140. Then, CPU 10 again detects the position of the paper by monitoring the output of pre-register conveyance sensor 160, and controls the conveyance of the paper so that the leading edge of the paper and the leading edge of the toner image on intermediate transfer belt 130 coincide with each other at secondary transfer unit 140. After the toner image has been transferred, the paper passes through fuser 170, and CPU 10 switches conveyance flapper 172. After the toner image is fixed, the paper is conveyed to paper conveying path 231 and discharged to paper discharge tray 196. In this way, double-sided printing is achieved.

[0029] When switching back the paper at the reversing unit A, the length of the paper in the transport direction must be shorter than the length L of the reversing unit A. Furthermore, by monitoring the output of the paper feed cassette open / close sensors 180 and 181, the CPU 10 can detect whether the corresponding paper feed cassettes 220 and 221 are open or closed. This allows the CPU 10 to perform control so that the paper feed operation is not started when the paper feed cassette 220 or 221 is open. The basic image forming operation described above is an example, and the present invention is not limited to the above configuration.

[0030] <Fuser> FIG. 3 is a diagram used to explain the configuration and fixing of the fixing device 170. The fixing device 170 is an assembly including a heater holder 207, a fixing heater 204 fixedly disposed on the underside of the heater holder 207 along the longitudinal direction of the heater holder (vertical to the drawing), and an elastic fixing film 203. Note that each arrow R in FIG. 3 indicates the direction of rotation. Also, arrow T in FIG. 3 indicates the direction of movement of paper M carrying toner 301.

[0031] The pressure roller 205 is disposed with both ends of its core metal bearings rotatably between the side plates of the fixing device. The fixing unit 170 is arranged parallel to the pressure roller 205 with the fixing heater 204 side facing in contact with the pressure roller 205, and both ends of the heater holder 207 are pressed with a predetermined pressure by a biasing mechanism (not shown). As a result, the surface of the fixing heater 204 is pressed against the pressure roller 205 with the fixing film 203 sandwiched therebetween against the elasticity of the pressure roller 205, forming a fixing nip portion 206 of a predetermined width.

[0032] The pressure roller 205 is driven to rotate at a predetermined peripheral speed in the counterclockwise direction indicated by the arrow R by a drive mechanism (not shown). The fixing heater 204 is a ceramic substrate having a resistance heating element formed on it. A temperature detection sensor 208 is in contact with the fixing heater 204. The CPU 10 detects the temperature of the fixing heater 204 from the output of the temperature detection sensor 208, and controls the power supplied to the fixing heater 204 so that the temperature of the fixing heater 204 reaches a predetermined target temperature.

[0033] The target temperature of the fixing heater 204 is determined by the type of paper being fed and the ambient temperature, etc. The CPU 10 determines the target temperature of the fixing heater 204 according to the type of paper set from the instruction / display unit 13 or the type of paper identified using the media sensor 14. As described above, the target temperature of the fixing unit 170 is set lower for thin paper than for plain paper, and higher for thick paper.

[0034] <Media sensor> Next, an example of the optical sensor 20 of the media sensor 14 will be described using Figure 4. Inside the media sensor 14, an LED 481 serving as a light-emitting element and a photodiode 480 serving as a light-receiving element are arranged. The amount of reflected light emitted by the LED 481 can be detected by the photodiode 480. The media sensor 14 also has a guide section 483 into which the paper sheet M enters.

[0035] The CPU 10 receives the signal from the photodiode 480 as the output value of the media sensor 14. The CPU 10 identifies the type of paper being fed according to differences in the received value due to the surface properties and thickness of each sheet of paper, and optimally controls the image formation speed and the target temperature of the fixing unit 170 according to the identified type of paper.

[0036] As described above, the CPU 10 identifies the paper type using the media sensor 14, eliminating the need for the user to consciously set the paper type. Therefore, the image forming apparatus 100 of this embodiment is provided with a mode (hereinafter referred to as the automatic setting mode) in which the paper type is identified using the media sensor 14 and print control parameters and the like are automatically set according to the paper type. In this embodiment, the automatic setting mode is executed when the first-time paper button 933 (FIG. 10D), which will be described later, is pressed. Meanwhile, the image forming apparatus 100 of this embodiment is also provided with a mode (hereinafter referred to as the manual setting mode) in which the user manually sets the paper type to be used. The user can operate the instruction / display unit 13 to preset either the automatic setting mode or the manual setting mode for each paper feed cassette.

[0037] The above-described configuration of the media sensor 14 is merely an example, and the present invention is not limited to this configuration. For example, the media sensor 14 may be configured by combining an ultrasonic sensor 19 such as a piezoelectric element in addition to the light-emitting element 481 and the light-receiving element 480, or may be configured with other components.

[0038] <Paper management table> FIG. 5 shows an example of a paper management table 1201 that holds paper information. The paper management table 1201 is stored in RAM 12 and holds paper information for paper that has been registered in advance in the device (basic paper) and paper information for paper that has been registered by user instruction (user-defined paper). Each row in the paper management table 1201 corresponds to paper information. ID 1202 is a number that identifies the paper information. For basic paper, name 1203 is a name that has been registered in advance in the device, and for user-defined paper, it is a name registered by the user. Frequently used paper 1204 is flag information that allows the user to register frequently used paper as a favorite for easy selection. Type 1205 is set to either basic paper or user-defined paper. Basis weight 1206 is the basis weight of the paper. Size 1207 is the size of the paper. Surface texture 1208 indicates the paper type. The secondary transfer voltage adjustment value 1209 and the image position adjustment value 1210 are set to either "Not set" or "Set." These adjustment values ​​will be described later. Each piece of paper information is linked to the registration date and time, update date and time, the number of times it has been used in the image forming unit 17, and the date and time of last use.

[0039] <Creating user-defined paper> Next, a method for creating a user-defined paper according to this embodiment will be described. Figures 6(a) to 6(b) and 7(a) to 7(c) show screens displayed on the instruction / display unit 13.

[0040] The paper information for user-defined paper includes settings for paper characteristics such as basis weight and surface properties, as well as print control parameters (control parameters for image formation) such as secondary transfer voltage and image position adjustment, which will be described later. In this embodiment, user-defined paper can be created based on print control parameters for basic paper that are prepared in advance. The print control parameters for basic paper are stored in RAM 12, and the print control parameters for user-defined paper are added to and stored in RAM 12 by CPU 10.

[0041] FIG. 6A shows a screen 501 displaying a list of paper types that can be selected when creating a user-defined paper type. The user can select three options from a pull-down menu 502 in FIG. 6A: “Basic Paper Type,” “User-Defined Paper Type,” and “All.” In response to the user's selection, the CPU 10 reads the paper type information stored in the paper management table 1201 and displays it in a list in an area 503. The screen 501 in FIG. 6A is displayed when “Basic Paper Type” is selected from the pull-down menu 502. The user can select a basic paper type from the types displayed in the area 503 and press the Duplicate button 505 to create and register new paper type information based on the paper type information of the basic paper type, assigning a new name to the basic paper type. The user can also select a basic paper type from the types displayed in the area 503 and press the Details / Edit button 504 to view the details of the basic paper type. Because basic paper types cannot be deleted, the Delete button 506 is grayed out.

[0042] FIG. 6(b) shows screen 511, which is displayed when "User-defined paper" is selected from the pull-down menu 512. Area 513 displays a list of user-defined paper types from the paper information held in paper management table 1201. The user can select any user-defined paper type from area 513 and press details / edit button 514 to update paper information parameters such as basis weight and size. The user can also select any user-defined paper type from area 513 and press copy button 515 to create and register new paper information based on the selected paper information. The user can also select any user-defined paper type from the papers displayed in area 513 and press delete button 516 to delete the paper information for the selected user-defined paper type from paper management table 1201.

[0043] 7A shows a detailed information screen 621 that is displayed when the details / edit button 504 or 514 is pressed. On the detailed information screen 621, it is possible to confirm and edit the settings of each parameter of the paper information held in the paper management table 1201. Name 624 corresponds to Name 1203. Type 625 corresponds to Type 1205. Basis weight 626 corresponds to Basis weight 1206. Size 627 corresponds to Size 1207. Surface property 628 corresponds to Surface property 1208. Secondary transfer voltage adjustment 629 and image position adjustment 630 correspond to the secondary transfer voltage adjustment value 1209 and image position adjustment value 1210. These adjustment values ​​will be explained next.

[0044] The secondary transfer voltage adjustment 629 is set to a value necessary to transfer toner from the intermediate transfer body but large enough to prevent abnormal discharge. For example, if paper whose resistance or moisture content differs significantly from the standard values ​​is used for printing, the default secondary transfer voltage may not provide optimal transfer. If the resistance of the paper used for printing is greater than the standard value, the default secondary transfer voltage will be insufficient, so a secondary transfer voltage greater than the default value must be applied. Furthermore, if the moisture content of the paper used for printing is less than the standard value, abnormal discharge is likely to occur, resulting in poor image quality. Therefore, a secondary transfer voltage smaller than the default value must be applied. Thus, the secondary transfer voltage must be appropriately controlled depending on the type of paper used for printing. To register an appropriate adjustment value for the paper, the CPU 10 may print a coarse adjustment chart or fine adjustment chart (not shown) and determine the adjustment value of the secondary transfer voltage so that the transfer efficiency falls within a specified range based on the measurements obtained by reading these charts.

[0045] When the user wishes to newly register or re-register the secondary transfer voltage adjustment 629, the user presses the change button 622. When the change button 622 is pressed, the CPU 10 displays the chart print screen 631 shown in FIG. 7B. When the print start button 632 is pressed on the chart print screen 631, the CPU 10 controls to print the chart and displays the screen 641 shown in FIG. 7C. The user places the printed chart in the feeder and presses the read start button 642. When the read start button 642 is pressed, the CPU 10 scans the chart, calculates the necessary adjustment values, associates them with the paper being registered, and saves the adjustment values ​​in the RAM 12. When the adjustment values ​​are saved, the secondary transfer voltage adjustment 629 on the detailed information screen 621 displays "Set."

[0046] Image position adjustment 630 is an adjustment item for adjusting the image position on the front and back sides of the paper. In image position adjustment 630, adjustment values ​​for the image position from the top and left edges on the front and back sides are set as movement amounts. For this adjustment as well, CPU 10 controls the printing of a chart for adjusting the image position on the front and back sides, and calculates the adjustment values ​​by reading that chart.

[0047] To newly register or update image position adjustment 630, the user presses change button 622. Then, using the screens of FIGS. 7(b) and 7(c), image forming apparatus 100 prints a chart for image position adjustment, scans the chart, calculates adjustment values, associates them with the paper being registered, and saves the adjustment values ​​in RAM 12. Once the adjustment values ​​are saved, image position adjustment 630 on detailed information screen 621 displays "Settings Completed." FIG. 7(a) lists name 624, type 625, basis weight 626, size 627, surface properties 628, secondary transfer voltage adjustment 629, and image position adjustment 630, but various other parameters are also recorded and can be confirmed by pressing button 623.

[0048] As described above, it is possible to create and register new paper information for user-defined paper based on paper information for already registered basic paper and user-defined paper. In this embodiment, before using the media sensor 14, the manual setting mode is operated, and of the already registered paper types, basic paper and user-defined paper of the same type as the paper type selected by the user are displayed, and the paper to be used for registering the user-defined paper is selected. The processing related to the manual setting mode is an example of the first processing. Then, after operating in the manual setting mode, if the paper is selected to be registered for the first time, the automatic setting mode is operated, and the user-defined paper is registered using the media sensor 14. The processing related to the automatic setting mode is an example of the second processing.

[0049] <Registering user-defined paper> Next, a method for registering a user-defined paper according to this embodiment will be described. 8A to 8C and 9 are realized by the CPU 10 reading out a program stored in the ROM 11 into the RAM 12 and executing it. In the following description, each process (step) is denoted by adding an S to the beginning, and the process (step) is notated in detail.

[0050] 10A to 10E and 11 to 12 show examples of screens displayed on the instruction / display unit 13 when registering a user-defined paper. Note that the location where paper is set when registering using the media sensor 14 is not limited to the paper feed cassette 220 or 221 shown in the configuration of FIG. 1, and may also be a manual feed cassette or optional cassette (not shown), etc.

[0051] First, the process relating to the manual setting mode will be described with reference to FIGS. 8A and 8B.

[0052] When an instruction to register a user-defined paper is given, in S801 and S802, the CPU 10 controls the instruction / display unit 13 to display a screen for selecting the size and type (surface property) of the paper to be registered as the user-defined paper. The user inputs the size and type of the paper to be registered into the instruction / display unit 13.

[0053] 10A shows an example of a screen 901 for selecting the paper size and type to be registered as a user-defined paper. When the CPU 10 detects that the user has pressed the Select Paper Size button 903 or the Select Paper Type button 904, it controls the instruction / display unit 13 to display each selection screen (not shown). The setting value display area 902 is initially blank and displays the paper size and type selected by the user. When it is detected that the user has selected the paper size and type and pressed the OK button 905, the process proceeds to S803. Note that the process may be configured so that if either the paper size or type has been selected, the process can proceed to the next step (S803).

[0054] In S803, the CPU 10 searches the paper management table 1201 stored in RAM 12 for paper information having the same paper size and type as the paper size and type selected in S801 and S802, and determines whether or not there is matching paper information. Note that the search does not have to be identical; similar paper information may also be searched. Specifically, the CPU 10 compares the size 1207 and surface property 1208 in the paper management table 1201 with the paper size and type selected by the user, and searches for paper information having the same settings. While the search is performed using paper size and type here, either one of these may be used, or other paper characteristics such as basis weight may also be used. If it is determined that there is paper information having the same paper size and type, the process proceeds to S804. On the other hand, if it is determined that there is no paper information having the same paper size and type, the process proceeds to S807.

[0055] In S804, the CPU 10 reads out paper information having the same paper size and type as the paper size and type selected in S801 and S802 from the paper management table 1201, and controls the instruction / display unit 13 to display the read paper information.

[0056] Fig. 10B shows an example of a screen 911 that displays the same paper information. Screen 911 displays a list of paper information that has the same paper size and type as the paper size and type selected by the user. Furthermore, when CPU 10 detects that the user has selected any paper in the list and pressed the details button 915, it performs control to display the detailed information screen 621 shown in Fig. 7(a). Note that if it is determined in S803 that there is no paper information that has the same paper size and type, a message to the effect that no paper with the same paper size and type was found is displayed in the main text of screen 911, and nothing is displayed in the list.

[0057] In S805, the CPU 10 performs control to change the display order of the paper information in the list on the screen 911 in accordance with the user's selection from the pull-down menu 912 and the pull-down menu 913 on the screen 911. The display order change process executed in S805 will be described later with reference to the flowchart in FIG. 8B.

[0058] In S806, the CPU 10 determines whether to register a user-defined paper using the paper information displayed in the list (paper information that has already been registered). If it detects that the user has pressed a selection button 914 for one of the papers in the list, it determines that the already registered paper information will be used, and the processing of the flowchart in FIG. 8A ends. On the other hand, if it detects that the user has pressed a button 916 to continue registering new paper or a cancel button 917, it determines that the already registered paper information will not be used, and the processing proceeds to S807. Here, if it is determined that the already registered paper information will be used, a selection screen 921 such as that shown in FIG. 10C may be displayed separately to indicate which paper feeder to set, or this may be included as part of the items on the screen 901 such as that shown in FIG. 10A, and the user may select this in advance.

[0059] In S807, the CPU 10 determines whether to end paper registration. If it detects that the user has pressed the button 916 to continue new paper registration, it proceeds to S808 to continue paper registration and transition to automatic setting mode. The processing executed in S808 will be described later using the flowchart in FIG. 8C. On the other hand, if it detects that the user has pressed the cancel button 917, the processing in the flowchart in FIG. 8A ends.

[0060] Fig. 8B is a flowchart showing the display order change processing executed in S805 of Fig. 8A. The processing of the flowchart shown in Fig. 8B specifically shows the processing when the pull-down menu 913 on the screen 911 is operated, and is executed in accordance with the user's operation. In S811, the CPU 10 determines whether multiple pieces of paper information having the same paper size and type have been searched for. If it is determined that multiple pieces of paper information have been searched for, the process proceeds to S812. If it is determined that only one piece of paper information exists, the process proceeds to S814. Note that if it is determined that only one piece of paper information exists, the pull-down menu 913 may be grayed out so that it cannot be selected.

[0061] In S812, the CPU 10 determines whether the user has selected a pull-down menu 913. The pull-down menu 913 displays the number of uses, the registration date and time, the update date and time, and the last used date and time, and if it is determined that a selection has been made by the user, the process proceeds to S813. If it is determined that a selection has not been made, the process proceeds to S814. Note that the items displayed in the pull-down menu 913 are not limited to those described above, and any of the parameters of the paper information in the paper management table 1201 may be used.

[0062] In S813, the CPU 10 changes the display order of the papers in the list on the screen 911 according to the item selected by the user from the pull-down menu 913, and controls to display the result. This process makes it easier for the user to select the desired registered paper when there is a large amount of paper information with the same paper information (size and type).

[0063] In S814, the CPU 10 determines whether or not the user has finished selecting the pull-down menu 913. If it is detected that the user has selected the pull-down menu 913 again, the process returns to S813. On the other hand, if it is detected in S806 described above that any of the buttons 914, 916, and 917 has been pressed, it is determined that the selection of the pull-down menu 913 has also finished, and the process of the flowchart in FIG. 8B ends.

[0064] Although the process relating to the manual setting mode has been described above using FIGS. 8A and 8B, this process is merely an example and is not limited to this.

[0065] Next, the process relating to the automatic setting mode will be described with reference to FIGS. 8C and 9. FIG. In S821, the CPU 10 controls the instruction / display unit 13 to display a screen for selecting a paper feed unit. The user inputs to the instruction / display unit 13 information about the paper feed unit in which the paper that the user wants to register as a user-defined paper is set.

[0066] 10C shows an example of a screen 921 for selecting a paper feed unit. Button 922 is pressed when setting the paper loaded in paper feed cassette 220 as the target of the setting. Button 923 is pressed when setting the paper loaded in paper feed cassette 221 as the target of the setting. Although not shown, in the case of a manual feed cassette, rather than having the user make a selection, the flow may proceed with the manual feed cassette as the target of the setting when CPU 10 detects that paper has been placed in the manual feed cassette. By pressing or detecting the above, CPU 10 selects one of multiple paper feed units, such as paper feed cassette 220, paper feed cassette 221, and the manual feed cassette.

[0067] In S822, the CPU 10 controls the instruction / display unit 13 to display a selection screen for selecting the paper setting method for the paper feed unit selected in S821. FIG. 10D shows an example of a screen 931 for setting paper for cassette 1. When the First Time Paper button 933 is selected, the CPU 10 switches from manual setting mode to automatic setting mode, in which a user-defined paper size is registered using the media sensor 14. When the Change Paper Size button 934 is pressed, the CPU 10 displays a screen for changing the paper size set in that paper feed unit. When the OK button 936 is pressed, the process proceeds to S823.

[0068] In S823, when paper registration is instructed by pressing the OK button 936, the CPU 10 determines whether or not the First Time Paper button 933 is selected. If the First Time Paper button 933 is selected, the process proceeds to S824. If the Frequently Used Paper button 932 or the Change Paper Type button 935 is selected, the process proceeds to S831.

[0069] In S824, when the registration of a new paper is instructed by selecting the first-time paper button 933, the CPU 10 controls so that paper is fed from the paper feed unit selected in S821.

[0070] In S825, the CPU 10 uses the media sensor 14 to measure the paper fed from the paper feed unit selected in S821, and identifies the type of paper fed in S824.

[0071] In S826, the CPU 10 searches the paper management table 1201 for paper information having a paper type that is the same as or similar to the paper type identified in S825, and determines whether or not there is any matching paper information. Specifically, the CPU 10 compares the basis weight 1206, size 1207, and surface property 1208 in the paper management table 1201 with the basis weight and surface property of the paper measured using the media sensor 14 and the set paper size, and searches for paper information that is the same as or similar to them. If it is determined that there is paper information of the same or similar paper type, the process proceeds to S827. If it is determined that there is no paper information of the same or similar paper type, the process proceeds to S830.

[0072] The CPU 10 can store the voltage value measured by the ultrasonic sensor 19 of the media sensor 14 or the brightness value measured by the optical sensor 20 together with the paper information in the RAM 12. The CPU 10 can determine whether the voltage value measured by the ultrasonic sensor 19 of the media sensor 14 or the brightness value measured by the optical sensor 20 is the same as or similar to the measurement value of the ultrasonic sensor 19 or the measurement value of the optical sensor 20 of the paper information.

[0073] In S827, the CPU 10 reads out paper information having paper information of a paper type that is the same as or similar to the paper type identified in S825 from the paper management table 1201, and controls the display of the read paper information on the instruction / display unit 13. Then, the CPU 10 prompts the user to select whether to use the registered paper information or to continue with new registration.

[0074] Fig. 10E shows an example of a screen 941 for registering paper using the media sensor 14. Fig. 10E displays a list of papers that have been determined to be the same as or similar to the measured paper based on the measurement results of the media sensor 14 for the paper fed from the paper feed unit selected in S821. If already registered paper information is to be used, the user selects the paper information to be used from selection button 943. If already registered paper information is not to be used and new paper registration is to continue, the user presses button 944 to continue new paper registration.

[0075] Here, the CPU 10 controls to display the fact that there is paper information searched for in S826. The CPU 10 also controls to display the paper information searched for in S826 and the paper type (basis weight and surface properties) measured in S825 using the media sensor 14. The CPU 10 selects whether to use already registered paper information or register new paper information in response to pressing the select button 943 or the button 944 for continuing to register new paper.

[0076] 8B and 10B, the CPU 10 may change the display order of the papers in the list and accept the display of detailed information. For example, the detailed information screen may not only display the registered paper information, but also the type of paper (basis weight and surface property) measured using the media sensor 14, and compare and display whether the values ​​of each item match.

[0077] In S828, the CPU 10 determines whether the user selected the selection button 943 or the continue new paper registration button 944. If the selection button 943 was selected, the process proceeds to S829. If the continue new paper registration button 944 was selected, the process proceeds to S830.

[0078] In S829, the CPU 10 sets the paper information of the paper selected from the list to be used for image formation (printing) on ​​the paper in the paper feed unit selected in S821. Then, the CPU 10 ejects the paper fed in S824 and ends the processing of the flowchart in Fig. 8C.

[0079] In S830, the CPU 10 performs new registration processing and ends the processing of the flowchart of Fig. 8C. The new registration processing of S830 will be described later with reference to Fig. 9.

[0080] In S831, the CPU 10 sets the paper information selected from the paper management table 1201 to be used for image formation (printing) on ​​the paper in the paper feed unit selected in S821. Then, the processing of the flowchart in Fig. 8C ends.

[0081] FIG. 9 is a flowchart showing the details of the new registration process in S830 of FIG. 8C. In S901, the CPU 10 creates new paper information for a user-defined paper using the paper type identified in S825. Specifically, the CPU 10 searches the paper information for basic paper in the paper management table 1201 for paper information that is most similar to the paper basis weight and surface properties measured using the media sensor 14. The CPU 10 then copies the searched paper information as paper information for a new user-defined paper (hereinafter referred to as new user-defined paper information).

[0082] In S902, the CPU 10 reflects the basis weight and surface properties of the paper measured using the media sensor 14 in the new user-defined paper information created in S901. In S903, the CPU 10 controls to print an adjustment chart on paper using the print control parameters of the new user-defined paper information in order to register the adjustment values ​​for the secondary transfer voltage adjustment and image position adjustment described in Fig. 7A. Here, the CPU 10 controls to display a chart print screen on the instruction / display unit 13 to notify the user that the adjustment chart will be printed.

[0083] 11(a) shows an example of a chart print screen 1031. When a print start button 1032 is pressed on the chart print screen 1031, the CPU 10 performs control to print an adjustment chart. Thereafter, the CPU 10 performs control to display a chart read screen, which notifies the user of the reading of the printed adjustment chart, on the instruction / display unit 13. FIG. 11(b) shows an example of a chart read screen 1041.

[0084] In S904, the CPU 10 waits until the user places the printed adjustment chart in the feeder and presses the read start button 1042 on the chart read screen 1041. If the read start button 1042 is pressed, the process proceeds to S905. In S905, the CPU 10 controls the process to scan and read the printed adjustment chart. In S906, the CPU 10 calculates the adjustment value based on the information of the read adjustment chart.

[0085] In S907, the CPU 10 stores the calculated adjustment value as the adjustment value of the new user-defined paper information created in S901 in the RAM 12. The adjustment value is, for example, the secondary transfer voltage adjustment value 1209 or the image position adjustment value 1210 of the paper information.

[0086] Here, one adjustment value is set by the CPU 10 executing S903 to S907 above. While FIG. 9 shows a flow for setting only one adjustment value, if, for example, two adjustment values ​​are to be set, the secondary transfer voltage adjustment and the image position adjustment of FIG. 7(a), S903 to S907 would be executed twice. When registering new user-defined paper information, the number of adjustment values ​​that must be set may be determined in advance by the device, or a separate setting item may be provided and selected by the user, service technician, or the like. When all adjustments required for registering new user-defined paper information have been completed, proceed to S908.

[0087] In S908, the CPU 10 displays on the instruction / display unit 13 a registration screen for accepting input of the name of the user-defined paper information to be newly registered. 12(a) shows an example of a registration screen 1151. When the CPU 10 detects that the user has pressed the name button 1152, it controls the instruction / display unit 13 to display a soft keyboard and accepts input of a paper name 1153. Note that if the paper name 1153 entered is the same as the name 1203 of the paper information held in the paper management table 1201, the CPU 10 may display that the name has already been registered and prompt the user to enter a different name.

[0088] Here, to prevent the same name from being set, a temporary name may be initially set for paper name 1153 when transitioning to registration screen 1151. The name of the basic paper that was used as the source of copying the new user-defined paper information in S901 may be set to "plain paper_20231212" with the creation date of the new user-defined paper information added, or "plain paper_0010" with the ID 1202 of the paper information to be registered added. Note that creation of a temporary name is not limited to when transitioning to screen 1151. When button 1154 to register as frequently used paper is pressed, the new user-defined paper information can be registered as a frequently used paper.

[0089] In S909, the CPU 10 waits for pressing of the OK button 1155. If the OK button 1155 is pressed, the process proceeds to S910.

[0090] In S910, the CPU 10 registers paper information in which the values ​​of each parameter have been set in the new user-defined paper information created in S901 in the paper management table 1201. The CPU 10 newly registers paper information having the paper type specified in S825, the adjustment value calculated in S906, and the new name input in S908 in the paper management table 1201. The CPU 10 then sets the paper information having the paper type specified in S825, the adjustment value calculated in S906, and the new name input in S908 to be used for image formation (printing) on ​​paper in the paper feed unit selected in S821.

[0091] When registration is complete, the CPU 10 controls the instruction / display unit 13 to display screen 1161 of FIG. 12(b). The name set by the user in S908 is displayed in area 1162. It is also possible to check the paper information registered here from the screen described in FIG. 6(b). This completes the processing of the flowchart in FIG. 9.

[0092] Each of the above-described processes can be terminated at any time by an instruction from the instruction / display unit 13, except during processing operations such as printing or scanning of an adjustment chart.

[0093] As described above, according to this embodiment, when registering paper, it is possible to search for and display existing paper information using the paper size / type selected by the user before using the media sensor 14. This reduces the need to use the media sensor 14 when registering paper using existing paper information, and reduces the amount of wasted paper. Furthermore, by searching for and displaying paper information that is the same as or similar to the paper size / type selected by the user, it is possible to prevent an increase in the unintended registration of paper information. Furthermore, even when the image forming apparatus 100, which is intended for both production and office use, is equipped with a manual setting mode and an automatic setting mode, it is possible to prevent an increase in the amount of wasted paper and the unintended registration of paper information.

[0094] (Other embodiments) The present disclosure can also be realized by a process in which a program that realizes one or more 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 the computer of the system or device read and execute the program. The present disclosure can also be realized by a circuit (e.g., ASIC) that realizes one or more functions. It should be noted that the above-described embodiments merely illustrate specific examples of implementing the present disclosure, and the technical scope of the present disclosure should not be construed as being limited by these embodiments. In other words, the present disclosure can be implemented in various forms without departing from its technical concept or main features.

[0095] The disclosure of each of the above-described embodiments includes the following configurations, methods, and programs. (Configuration 1) a detection means for detecting the type of paper fed, the detection means being provided on a transport path along which paper is transported from the paper feeding means to the image forming means; a storage means for storing paper information including paper type for registered paper; an image forming means for printing on paper using the paper information; When registering a paper in the storage means, a control unit that executes a first process of searching for the paper information stored in the storage unit based on the paper type selected by the user and displaying the searched paper information; a control means for controlling execution of a second process in which, after the first process has been executed, the detection means is used to search for the paper information stored in the storage means based on the type of paper detected by the detection means, and the searched paper information is displayed; and An image forming apparatus comprising: (Configuration 2) The image forming apparatus according to configuration 1, characterized in that the control means controls to execute the second process when a selection is made to register paper without using the paper information displayed by the first process. (Configuration 3) 3. The image forming apparatus according to claim 1, wherein the control unit, when executing the second process, registers the paper based on the type of paper detected by the detection unit. (Configuration 4) The image forming apparatus according to any one of configurations 1 to 3, wherein the control means, when there are multiple pieces of paper information searched by the first process and / or the second process, displays the multiple pieces of paper information side by side, and changes the display order of the paper information according to a predetermined item selected by a user. (Configuration 5) 5. The image forming apparatus according to configuration 4, wherein the predetermined items include at least one of the number of times used by the image forming unit, the last used date and time, the registration date and time, and the update date and time. (Configuration 6) The image forming apparatus according to any one of configurations 1 to 5, characterized in that the control means controls the display of details of information contained in the paper information when the paper information displayed by the first process is selected. (Configuration 7) The image forming apparatus according to any one of configurations 1 to 6, characterized in that in the first process, paper information having a paper type that is the same as or similar to the paper type selected by the user is searched for and displayed from the paper information stored in the storage means. (Configuration 8) The image forming apparatus according to any one of configurations 1 to 7, wherein the control means controls the apparatus to execute the second process if the paper information cannot be found in the first process. (Configuration 9) The image forming apparatus according to any one of configurations 1 to 8, characterized in that when it is selected to use the paper information displayed by the first process, the control means sets the selected paper information or newly created paper information based on the selected paper information for the paper feeding means. (Configuration 10) 10. The image forming apparatus according to any one of configurations 1 to 9, wherein the detection means measures the basis weight and surface properties of the paper. (Configuration 11) The image forming apparatus according to any one of configurations 1 to 10, characterized in that in the second process, paper information having a paper type that is the same as or similar to the paper type detected by the detection means is searched for and displayed from the paper information stored in the storage means. (Configuration 12) An image forming apparatus according to any one of configurations 1 to 11, characterized in that when it is selected to register paper without using the paper information displayed by the second process, the control means creates new paper information based on the paper information stored in the storage means that has a paper type that is the same as or similar to the paper type detected by the detection means. (Configuration 13) The image forming apparatus according to any one of configurations 1 to 11, characterized in that when the paper information is not found by the second process, the control means creates new paper information based on the paper information stored in the storage means that has a paper type that is the same as or similar to the paper type detected by the detection means. (Configuration 14) The image forming unit prints an adjustment chart based on the newly created paper information, 14. The image forming apparatus according to claim 12, wherein the control unit includes the adjustment value obtained by reading the adjustment chart in the newly created paper information. (method) a detection means for detecting the type of paper fed, the detection means being provided on a transport path along which paper is transported from the paper feeding means to the image forming means; a storage means for storing paper information including paper type for registered paper; an image forming means for printing on paper using the paper information; A control method for an image forming apparatus having When registering a paper in the storage means, a control unit that executes a first process of searching for the paper information stored in the storage unit based on the paper type selected by the user and displaying the searched paper information; A control method for an image forming apparatus, comprising a step of controlling execution of a second process in which, after the first process has been executed, the detection means is used to search for the paper information stored in the storage means based on the type of paper detected by the detection means, and the searched paper information is displayed. (program) A program for causing a computer to function as a control means for the image forming apparatus according to any one of the first to fourteenth aspects. [Explanation of symbols]

[0096] 100: Image forming apparatus, 14: Media sensor

Claims

1. a detection means for detecting the type of paper fed, the detection means being provided on a transport path along which paper is transported from the paper feeding means to the image forming means; a storage means for storing paper information including paper type for registered paper; an image forming means for printing on paper using the paper information; When registering a paper in the storage means, a control unit that executes a first process of searching for the paper information stored in the storage unit based on the paper type selected by the user and displaying the searched paper information; a control means for controlling execution of a second process in which, after the first process has been executed, the detection means is used to search for the paper information stored in the storage means based on the type of paper detected by the detection means, and the searched paper information is displayed; and An image forming apparatus comprising:

2. 2. The image forming apparatus according to claim 1, wherein the control unit controls the second process to be executed when a selection is made to register paper without using the paper information displayed by the first process.

3. 2. The image forming apparatus according to claim 1, wherein the control unit, when executing the second process, registers the paper based on the type of paper detected by the detection unit.

4. The image forming apparatus according to claim 1, characterized in that, when there are multiple pieces of paper information searched by the first process, the control means displays the multiple pieces of paper information side by side and changes the display order of the paper information according to a predetermined item selected by the user.

5. 5. The image forming apparatus according to claim 4, wherein the predetermined items include at least one of the number of times used by the image forming unit, the last used date and time, the registration date and time, and the update date and time.

6. 2. The image forming apparatus according to claim 1, wherein the control unit controls the display unit to display details of information included in the paper information when the paper information displayed by the first process is selected.

7. 2. The image forming apparatus according to claim 1, characterized in that in the first process, paper information having a paper type that is the same as or similar to the paper type selected by the user is searched for and displayed from the paper information stored in the storage means.

8. 2. The image forming apparatus according to claim 1, wherein the control unit controls the second process to be executed when the paper information cannot be retrieved in the first process.

9. The image forming apparatus according to claim 1, characterized in that, when it is selected to use the paper information displayed by the first processing, the control means sets the selected paper information for the paper feed means or newly created paper information based on the selected paper information.

10. 2. The image forming apparatus according to claim 1, wherein said detecting means measures the basis weight and surface properties of the paper.

11. The image forming apparatus according to claim 1, characterized in that in the second process, paper information having a paper type that is the same as or similar to the paper type detected by the detection means is searched for and displayed from the paper information stored in the storage means.

12. The image forming apparatus according to claim 1, characterized in that, when it is selected to register paper without using the paper information displayed by the second processing, the control means creates new paper information based on the paper information stored in the storage means that has a paper type that is the same as or similar to the paper type detected by the detection means.

13. The image forming apparatus according to claim 1, characterized in that, when the paper information is not searched for by the second process, the control means creates new paper information based on the paper information stored in the storage means that has a paper type that is the same as or similar to the paper type detected by the detection means.

14. The image forming unit prints an adjustment chart based on the newly created paper information, 13. The image forming apparatus according to claim 12, wherein the control unit includes the adjustment values ​​obtained by reading the adjustment chart in the newly created paper information.

15. a detection means for detecting the type of paper fed, the detection means being provided on a transport path along which paper is transported from the paper feeding means to the image forming means; a storage means for storing paper information including paper type for registered paper; an image forming means for printing on paper using the paper information; A control method for an image forming apparatus having When registering a paper in the storage means, a control unit that executes a first process of searching for the paper information stored in the storage unit based on the paper type selected by the user and displaying the searched paper information; A control method for an image forming apparatus, comprising a step of controlling execution of a second process in which, after the first process has been executed, the detection means is used to search for the paper information stored in the storage means based on the type of paper detected by the detection means, and the searched paper information is displayed.

16. A program for causing a computer to function as the control means of the image forming apparatus according to any one of claims 1 to 14.

Images