Recording device, control method of recording device, and program

Abstract

To improve user convenience when determining a type of recording medium.SOLUTION: A recording device comprises: acquisition means that acquires a characteristic value of a sheet inserted into a sheet supply port; extraction means that extracts, from among a first candidate group, a candidate to be used for a print setting of the inserted sheet on the basis of a comparison result between the acquired characteristic value and characteristic values of the first candidate group of the sheet types stored in a storage section; display control means that causes a display section to display a print setting screen including the extracted candidate; and determination means that determines a print parameter of the inserted sheet on the basis of history information indicating a history of used sheet types and the extracted candidate.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present disclosure relates to setting a recording medium to be used for printing. [Background technology]

[0002] It is known that when recording with a recording device, control parameters are used according to the type of paper (recording medium) to obtain high image quality. Patent Document 1 discloses a recording device that has the following two modes for recording using appropriate control parameters: a mode in which a recording medium is selected by the user from recording medium candidates ranked according to predetermined criteria, and an automatic selection mode in which the highest-ranking recording medium is selected if no recording medium is selected within a predetermined time. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-121533 Summary of the Invention [Problem to be solved by the invention]

[0004] In the automatic selection mode of Patent Document 1, the displayed candidate may be selected automatically regardless of its reliability. As a result, a type of recording medium not intended by the user may be used, which may actually impair user convenience. Furthermore, since the candidate recording medium is selected from all recording media, there is a possibility that a recording medium that is not suitable for the user may be selected as a candidate.

[0005] Therefore, an object of the present disclosure is to improve user convenience when determining the type of recording medium. [Means for solving the problem]

[0006] A recording device according to one aspect of the present disclosure is characterized by comprising: an acquisition means for acquiring characteristic values ​​of paper inserted into a paper feed port; an extraction means for extracting candidates to be used for print settings of the inserted paper from a first group of candidates based on the results of comparing the acquired characteristic values ​​with the characteristic values ​​of each of a first group of candidates for paper types stored in a memory unit; a display control means for displaying a print setting screen including the extracted candidates on a display unit; and a determination means for determining print parameters of the inserted paper based on history information representing the history of paper types used and the extracted candidates. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to improve user convenience when determining the type of recording medium. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a configuration of a recording apparatus. [Figure 2] FIG. 2 is a diagram illustrating a configuration of a carriage. [Figure 3] FIG. 2 is a diagram illustrating a configuration of an optical sensor. [Figure 4] FIG. 2 is a block diagram showing the configuration of a control system of the printing apparatus. [Figure 5] 10 is a table showing a group of recording medium candidates and their storage information. [Figure 6] 10A and 10B are diagrams showing display forms of an input / output section for switching the selection mode of a recording medium. [Figure 7] 10 is a flowchart showing a flow of determining a recording medium. [Figure 8] 10 is a flowchart showing a flow of extracting recording medium candidates. [Figure 9] 10 is a flowchart showing a display format on an input / output unit. [Figure 10] FIG. 10 is a diagram showing a display format on an input / output unit. [Figure 11] 10 is a flowchart showing a flow of determining a recording medium. DETAILED DESCRIPTION OF THE INVENTION

[0009] <Embodiment 1> (Overall composition) FIG. 1 is a perspective view showing the configuration of a printing apparatus 100, with FIG. 1(a) showing the overall exterior of the printing apparatus 100. FIG. 1(b) shows the internal structure of the printing apparatus 100 with the top cover open, omitting the exterior. In this embodiment, the printing apparatus 100 performs printing by ejecting ink droplets as a printing material onto a printing medium using an inkjet printing method. The printing medium is transported in the Y direction. A carriage 101 carrying a printing head 102 moves back and forth in the X direction, which intersects with the Y direction, to perform printing. This description of the inkjet printing apparatus includes a so-called serial printing head. However, an inkjet printing apparatus including a so-called line printing head, in which a nozzle array is configured across the printing width in the printing medium transport direction, may also be used. Furthermore, the printing apparatus may be a multifunction peripheral (MFP) that integrates not only printing functionality but also scanning, faxing, transmission, and other functions. In this embodiment, the printing apparatus 100 includes the functionality of an information processing device for performing a printing medium selection process (described later).

[0010] An input / output unit 406 is provided on the top of the recording device 100. The input / output unit 406 is an operation panel equipped with a display unit, and displays remaining ink levels or candidate paper types (types of recording media) on the display, allowing the user to select a recording medium or configure recording settings by operating keys.

[0011] The carriage 101 has an optical sensor 201 (FIG. 2) and a print head 102 having an ejection port surface with ejection ports for ejecting ink. The carriage 101 is configured to be able to move back and forth in the X direction (carriage movement direction) along a shaft 104 via a conveyor belt 103 by driving a carriage motor 415 (FIG. 4). In this embodiment, the printing apparatus 100 can use the optical sensor 201 to acquire diffuse reflection characteristic values ​​and specular reflection characteristic values ​​on the surface of the printing medium 105, and measure the distance between the carriage 101 and the printing medium 105.

[0012] A recording medium 105 such as roll paper is transported in the Y direction on a platen 106 by transport rollers (not shown). Recording is performed by ejecting ink droplets from the print head 102 while the carriage 101 moves in the X direction over the recording medium 105 transported onto the platen 106 by the transport rollers. When the carriage 101 reaches the edge of the printing area on the recording medium 105, the transport rollers transport the recording medium 105 a fixed distance and move the area for the next printing scan to a position where the print head 102 can print. An image is recorded by repeating the above operations.

[0013] (Carriage configuration) 2 is a diagram showing the configuration of the carriage 101. The carriage 101 is configured to include a translator 202 and a head holder 203. The head holder 203 includes the print head 102 and an optical sensor 201, which is a reflective sensor. As shown in FIG. 2, the optical sensor 201 is configured so that its bottom surface is at the same position as or higher than the bottom surface of the print head 102.

[0014] (Optical sensor configuration) 3 is a cross-sectional schematic diagram showing the configuration of the optical sensor 201. The optical sensor 201 includes, as optical elements, a first LED 301, a second LED 302, a third LED 303, a first photodiode 304, a second photodiode 305, and a third photodiode 306. The first LED 301 is a light source having an illumination angle normal (90°) to the surface (measurement surface) of the recording medium 105. The first photodiode 304 receives light emitted from the first LED 301 and reflected from the recording medium 105 at an angle of 45° in the Z direction. In other words, the optical sensor 201 forms an optical system that detects the so-called diffuse reflection component of the light reflected from the recording medium 105.

[0015] The second LED 302 is a light source having an irradiation angle of 60° in the Z direction with respect to the surface (measurement surface) of the recording medium 105. The first photodiode 304 receives the light emitted from the second LED 302 and reflected from the recording medium 105 at an angle of 60° in the Z direction. In other words, the angles of light emission and reception are equal, forming an optical system that detects the so-called regular reflection component of the light reflected from the recording medium 105.

[0016] The third LED 303 is a light source having an illumination angle normal (90°) to the surface (measurement surface) of the recording medium 105. The second photodiode 305 and the third photodiode 306 receive light emitted from the third LED 303 and reflected from the recording medium 105. The amount of light received by each of the second photodiode 305 and the third photodiode 306 changes depending on the distance between the optical sensor 201 and the recording medium 105, and they operate as distance measuring sensors that measure the distance between the optical sensor 201 and the recording medium 105. Here, the distance between the optical sensor 201 and the platen 106 is predetermined, so the "paper thickness" of the recording medium 105 is obtained by measuring the distance between the optical sensor 201 and the recording medium 105.

[0017] In this embodiment, the optical sensor 201 is installed on the carriage, but it may be in other forms. For example, it may be fixed to the recording device, or it may be a measuring device that is separate from the recording device and that measures characteristic values ​​such as diffuse reflection and regular reflection of the recording medium, and transmits the measured characteristic values ​​to the recording device.

[0018] (Block diagram) FIG. 4 is a block diagram of the control system of the recording device 100. The ROM 402 is a non-volatile memory that stores, for example, a control program for controlling the recording device 100 or a program for implementing the operation of this embodiment. The operation of this embodiment is implemented, for example, by the CPU 401 reading the program stored in the ROM 402 into the RAM 403 and executing it. The RAM 403 is also used as the working memory of the CPU 401. The EEPROM 404, which serves as a storage unit, stores data that should be retained even when the recording device 100 is turned off. At least the CPU 401 and ROM 402 implement the function of an information processing device for performing the recording medium selection process described below. In this embodiment, the EEPROM 404 stores the usage history of recording media that have been fed in the past. The stored information is treated as usage history information. The EEPROM 404 also stores a predetermined group of candidate recording media, characteristic values ​​of each recording medium, extraction ranges for the characteristic values ​​of each recording medium, and categories of each recording medium. A category is a broad classification of recording media types, and in this embodiment, four categories are set: plain paper, coated paper, glossy paper, and film paper. For example, if the recording medium is premium plain paper, it is classified into the "plain paper" category, and if it is inherently glossy paper, it is classified into the "glossy paper" category. Although recording media also include media other than paper media, in this embodiment, the user is notified using the term "paper." Recording medium usage history information and characteristic values ​​of each recording medium may be stored in a host computer or server rather than in a storage medium within the recording device.

[0019] The interface (I / F) circuit 410 connects the recording device 100 to an external network such as a LAN. The recording device 100 transmits and receives various jobs and data to and from external devices such as a host computer via the I / F circuit 410.

[0020] The input / output unit 406 includes an input unit and an output unit. The input unit receives instructions from the user to turn on the power, to execute recording, or to set various functions. The output unit displays various device information such as power saving mode, or a setting screen for various functions that the recording device 100 can execute. In this embodiment, the input / output unit 406 is an operation panel provided in the recording device 100, and is connected to the system bus 416 via the input / output control circuit 405 so as to be able to send and receive data. In this embodiment, the CPU 401 controls the display of information on the output unit.

[0021] Alternatively, the input unit may be a keyboard of an external host computer, and may be capable of accepting user instructions from the external host computer. The output unit may be an LED display, an LCD display, or a display connected to the host device. If the input / output unit is a touch panel, it may be capable of accepting instructions from the user via software keys. The input / output unit 406 may also be a speaker and microphone, and input from the user may be voice input, and notifications to the user may be voice output.

[0022] In this embodiment, an information processing device that is equipped with a CPU and ROM having functions similar to those of CPU 401 and ROM 402 and is externally connected to recording device 100 may perform the recording medium determination process described below and determine the recording medium to be used by recording device 100.

[0023] When measurement is performed by the optical sensor 201, the CPU 401 drives the LED control circuit 407, which controls the lighting of a predetermined LED in the optical sensor 201. Each photodiode in the optical sensor 201 outputs a signal corresponding to the received light, which is converted into a digital signal by the A / D conversion circuit 408 and temporarily stored in the RAM 403. Data that should be saved even when the recording device 100 is powered off is stored in the EEPROM 404.

[0024] The printhead control circuit 411 supplies a drive signal corresponding to the print data to a nozzle drive circuit mounted on the printhead 102 and including a selector or switch, thereby controlling the print operation of the printhead 102, such as the nozzle drive order. For example, when print data is sent from an external device to the I / F circuit 410, the print data is temporarily stored in RAM 403. The printhead control circuit 411 then drives the printhead 102 based on the print data converted from the print data. At this time, an LF (line feed) motor drive circuit 412 drives an LF motor 413 based on the bandwidth of the print data, and the transport roller connected to the LF motor 413 rotates to transport the print medium. A CR (carriage) motor drive circuit 414 drives a CR (carriage) motor 415 to scan the carriage 101 via the transport belt 103.

[0025] The data sent from the I / F circuit 410 includes not only the data to be printed but also data set by the printer driver. The data to be printed may be received from an external device via the I / F circuit 410 and stored in a storage unit, or may be stored in advance in a storage unit such as a hard disk. The CPU 401 reads image data from the storage unit and controls the image processing circuit 409 to convert the image data into print data for use with the print head 102 (binarization processing). In addition to binarization processing, the image processing circuit 409 also performs various other image processing, such as color space conversion, HV conversion, gamma correction, and image rotation.

[0026] (Recording medium candidates) In this embodiment, as described above, EEPROM 404 stores a predetermined group of candidate recording media, characteristic values ​​of each recording medium, extraction ranges of the characteristic values ​​of each recording medium, categories of each recording medium, and usage history information of each recording medium.

[0027] FIG. 5(a) shows a group of candidates that can be applied to the paper settings of this embodiment. There are four broad categories of recording media, namely glossy paper, plain paper, coated paper, and film paper. Apart from the category of recording media, the paper can also be broadly classified as either specific paper or general-purpose paper. A specific paper is a paper whose product name is pre-stored in the recording device 100. For example, "premium glossy paper" listed under the types of recording media in FIG. 5 is written using the product name. Therefore, the attribute of the recording media is "specific paper" and the category of the recording media is "glossy paper." Also, for example, "coated paper (thin)" is a general-purpose name, not a product name. Therefore, the attribute of the recording media is "general-purpose paper" and the category of the recording media is "glossy paper." Each type of recording media is classified into four "categories" as shown in FIG. 5. Apart from the category, the paper can also be classified into an "attribute" of either specific paper or general-purpose paper. The reason for broadly classifying paper as specific paper or general-purpose paper is that the recording device 100 is provided with types of recording media that apply dedicated paper settings that are optimally usable for specific paper. Also, some users know recording media by their product names. To make it easier for such users to understand, the display screen for print settings, etc. of the recording device 100 uses product names (specific paper) or general names (general-purpose paper) for paper settings.

[0028] The candidate group table shown in Fig. 5(a) is a table listing all the types of recording media stored in EEPROM 404. Also, Figs. 5(b) to 5(d) are diagrams showing candidate groups of recording media selected from Fig. 5(a) based on specific conditions.

[0029] The specular reflection value, diffuse reflection value, and paper thickness characteristic values ​​are set for each type of recording medium. The diffuse reflection value and specular reflection value are values ​​obtained by A / D converting the output voltage output by the optical sensor 201 upon receiving light in 11 bits. An extraction range is set for each characteristic value, and recording medium candidates that fall within the extraction range are extracted in the recording medium selection flow. The method for extracting recording medium candidates using each characteristic value will be described later with reference to Figures 7 and 8. For example, for inherent plain paper, the specular reflection value is set to 840, and the extraction range is set to ±5%. Since this is within ±5% of 840, the extraction range is 798 to 882. Since the paper thickness is 90 μm and the extraction range is ±20 μm, the extraction range is 70 μm to 110 μm.

[0030] (Switching recording medium selection mode) In this embodiment, there are four modes for selecting the type of recording medium on the print setting screen: fixed mode, manual mode, estimated manual mode, and estimated automatic mode. These modes are used to determine the print settings to be applied to the recording medium during printing. Of these modes, estimated manual mode and estimated automatic mode are measurement modes that estimate the type of recording medium from measurement results. The measurement results refer to the results of measurement of the characteristic values ​​of the recording medium by the optical sensor 201 when the user places the recording medium in the paper feed slot. Furthermore, manual mode and fixed mode are specification modes that determine the type of recording medium based on the user's specification of the type of recording medium or specification of a mode without using the measurement results. Each mode will be described below.

[0031] In the fixed mode, the type of recording medium preset by the user is automatically determined as the recording target.

[0032] 6 shows a print setting screen for determining the paper (recording medium) to be used for printing, in the input / output unit 406 provided in the recording device 100. The recording device 100 executes printing applying the print settings determined on this setting screen.

[0033] Here, the printing flow in the recording device 100 will be explained. The user inserts the paper to be used for printing into the paper feed slot of the recording device 100. This starts the paper feed operation. At this time, as part of the paper feed operation, the optical sensor 201 described in FIG. 3 is used to acquire paper characteristic values. Then, based on the acquired characteristic values, the input / output unit 406 displays a print setting screen including candidate paper types (types of recording media). When paper is selected by a user operation or automatically, the recording device 100 completes the remaining paper feed operations, such as detecting the leading edge of the paper. This puts the paper into a state where it has been fed into the recording device 100. After this, the recording device 100 starts printing based on the printing parameters of the selected paper type. In other words, the setting screen in FIG. 6 is the setting screen displayed on the input / output unit 406 from the start to the completion of the paper feed operation.

[0034] FIG. 6(a) shows the print settings screen in fixed mode. As shown in FIG. 6(a), the comment area 41 of the input / output unit 406 displays the message "The following paper type will be fed. If you want to print on a different paper type, tap 'Paper Type' to change it." The area below displays the preset recording medium type. If the user does not operate the input / output unit 406 within a specified time or selects the "OK" item in FIG. 6(a), the recording medium to be printed is determined to be the "unique glossy paper" preset by the user. If the user selects the "Paper Type" in FIG. 6(a) within the specified time, the comment area 41 displays the message "Please select the paper to be fed from the list" as shown in FIG. 6(b), and the category display area 43 displays the recording medium category. The user can select a recording medium category by selecting a category here, as shown in FIG. 6(c). Once the user selects a recording medium, the recording medium is confirmed.

[0035] In manual mode, as shown in FIG. 6(d), the comment area 41 of the input / output unit 406 displays "Please select the paper to be fed from the list," the candidate display area 42 displays the recording media selected up to that point in order of history, and the category display area 43 displays categories in a predetermined order. Touching button 40 allows the screen display to scroll down. The user can select the recording media to record to from the history or category. The reason why the third item from the top in the candidate display area 42 displays "No candidates to select" is because FIG. 6(d) is an example in which the recording media setting history only has the top two items.

[0036] In the estimated manual mode, the optical sensor 201 measures the characteristics of the recording medium 105 to be recorded on, and candidate types of recording medium are displayed in the input / output unit 406 based on the measurement results. That is, as shown in FIG. 6( e), the comment area 41 displays "Please select the paper to be fed from the list," and the candidate display area 42 displays candidates based on the measurement results of the characteristics. The category display order in the category display area 43 is also displayed in an order based on the measurement results. The user selects the type of recording medium from the input / output unit 406 to determine the recording medium to be recorded on.

[0037] In the automatic estimation mode, the optical sensor 201 measures the characteristics of the recording medium 105 to be recorded on, and based on the measurement results, candidate recording medium types are displayed on the input / output unit 406 and automatically determined. That is, as shown in FIG. 6(f), the comment area 41 displays "Paper 1 will be automatically fed (selection from a list is also possible)," and the candidate display area 42 displays candidates based on the measurement results of the characteristics. The category display area 43 also displays categories in an order based on the measurement results. If no user operation is performed for a predetermined period of time, the recording medium displayed as the top candidate is automatically determined as the recording medium to be recorded on. If the user selects a type of recording medium, the selected recording medium is determined as the recording medium to be recorded on.

[0038] The user can switch between these four modes. Fig. 6(g) shows the home screen displayed on the input / output unit 406. Fig. 6(g) shows the state when "Device Settings" is selected from the items displayed on the home screen. When an item is selected, the selected item is highlighted and the next screen is displayed. In Fig. 6 of this embodiment, the background of the item is a different color from the other items, and the item is highlighted by making the frame of the item thicker.

[0039] When "Device Settings" is selected on the home screen, the device settings screen shown in FIG. 6(h) is displayed. Touching button 40 displayed in FIG. 6(h) allows the screen display to scroll downward. Touching "Back" switches from the display in FIG. 6(h) to the home screen display in FIG. 6(g). When "Paper-related Settings" is selected on the device settings screen, the "Paper-related Settings" item is highlighted as shown in FIG. 6(h). Then, the paper-related settings screen shown in FIG. 6(i) is displayed. Note that FIG. 6(i) shows the screen when "Paper Type Selection Method" is selected on the settings screen. The paper-related settings screen displays items for setting recording medium information set in the recording device 100, such as an item for setting the height of the recording head 102 during recording or an item for setting the cutting speed when cutting roll paper. When "Paper Type Selection Method" is selected on the paper-related settings screen in FIG. 6(i), the paper type selection method settings screen shown in FIG. 6(j) is displayed. From this screen, the user can set the mode for selecting the recording medium type described above. When "Automatic selection from estimation result" shown in FIG. 6(j) is selected, the estimation automatic mode is executed, and when "Manual selection from estimation result" is selected, the estimation manual mode is executed.

[0040] In the automatic estimation mode of this embodiment, after candidates are displayed, if no user operation is performed, the recording medium displayed at the top of the list is applied to the print settings. In addition, in this embodiment, if there are no recording media with usage history information among the candidates extracted for candidate display, candidates are displayed based on predetermined criteria, and then the recording medium is determined by the user's selection operation. In other words, the recording medium is not automatically determined until the user performs a selection operation. This allows the user time to review the candidates even when only recording media the user has never used are displayed as candidates, thereby reducing the number of settings errors during print settings. The print setting flowchart of this embodiment is described below.

[0041] (Flowchart for determining recording medium) 7 is a flowchart of the process for determining the recording medium to be used for printing in this embodiment. The process for determining the recording medium is performed after the mode for selecting the type of recording medium has been preset by the user. Note that in this embodiment, the description will be given assuming that the estimated automatic mode, of the four modes described above, has been preset.

[0042] The processing of this flowchart is executed by the CPU 401 of the recording device 100 by loading a program stored in the ROM 402 into the RAM 403. The processing of this flowchart also starts when a user inserts a recording medium into the paper feed slot.

[0043] In S701, the CPU 401 extracts candidates for recording media to be used for print settings based on the results of comparing the measurement values ​​of the recording media inserted into the paper feed slot with the characteristic values ​​stored in the EEPROM 404. The process of extracting recording media candidates (details of S701) will be described later.

[0044] In S702, the CPU 401 determines whether or not there is a recording medium extracted in S701. If it is determined that there is an extracted recording medium, the CPU 401 proceeds to S703. If no recording medium has been extracted, the CPU 401 proceeds to S712.

[0045] If it is determined in S702 that there is no extracted recording medium, in S712 the CPU 401 displays only the categories on the input / output unit 406. An example of displaying only the categories will be described later with reference to FIG.

[0046] In S703, the CPU 401 determines whether any of the recording medium candidates extracted in S702 has usage history information. Usage history information is information indicating that the target recording medium has been applied to print settings in the recording device 100 in the past. If it is determined that a recording medium with usage history information exists, the CPU 401 proceeds to S704. If it is determined that a recording medium with usage history information does not exist, the CPU 401 proceeds to S708.

[0047] In S704, the CPU 401 determines the priority of storage media having usage history information from among the storage media extracted in S701, based on a predetermined criterion. The priority of the candidate storage media is determined to be higher the closer the acquired measured characteristic values ​​are to the characteristic values ​​of each storage medium stored in the EEPROM 404. In this embodiment, the smaller the absolute value of the sum of squares of the differences between the measured characteristic values ​​and the storage media, as shown in the following formula (1), the higher the priority is.

[0048] |(Measured specular reflectance value - specular reflectance value) 2 + (Measured diffuse reflection value - diffuse reflection value) 2 + (Paper thickness measurement - Paper thickness) 2 |···Formula (1) At this time, weighting may be performed by multiplying each characteristic value by a predetermined coefficient, or only the values ​​of specific characteristic values ​​may be used.

[0049] In S705, the CPU 401 displays a print setting screen including candidates for the corresponding recording media on the operation panel of the input / output unit 406 based on the priority order determined in S704. The display method will be described later with reference to the flowchart of Fig. 9 showing the display format on the input / output unit 406 and Fig. 10 showing an example of display on the input / output unit.

[0050] In S706, the CPU 401 determines whether the user has performed a candidate selection operation on the input / output unit 406 within a predetermined time after the recording medium has been displayed. If it is determined that a selection operation has been performed, the CPU 401 proceeds to S710. If it is determined that no selection operation has been performed, the CPU 401 proceeds to S707.

[0051] In S707, the CPU 401 determines the recording medium displayed at the top of the candidates on the print setting screen as the recording medium to be used for printing. After S707, the CPU 401 ends the processing of this flowchart.

[0052] In S708, since it was determined in S703 that there are no recording media with usage history information, the CPU 401 determines the priority order from among all the candidate recording media extracted in S701. In this case, the ranking is performed using the same formula (1) used in S704.

[0053] In S709, the CPU 401 displays a print setting screen including candidates for recording media on the input / output unit 406 based on the priority order determined in S708. The display method will be described later with reference to the flowchart of FIG. 9 showing the display format on the input / output unit and FIG. 10 showing the display format on the input / output unit.

[0054] In S710, the CPU 401 determines whether a recording medium has been selected by the user. If it is determined that a recording medium has been selected, the CPU 401 proceeds to S711. If it is determined that a recording medium has not been selected, the CPU 401 waits in S810 until a selection is made by the user.

[0055] In S711, the CPU 401 determines the recording medium selected by the user as the recording medium to be used for printing. The printing parameters of the recording medium determined in this step will be applied to printing on the recording medium inserted into the paper feed slot. After S711, the CPU 401 ends the processing of this flowchart.

[0056] (Flowchart for extracting recording medium candidates) Fig. 8 is a flowchart for extracting recording medium candidates in this embodiment. That is, it shows details of S701 in Fig. 7. The flow for extracting recording medium candidates is performed by acquiring characteristic values ​​of specular reflection value, diffuse reflection value, and paper thickness using the optical sensor 201, and comparing the acquired measurement values ​​with the characteristic values ​​of each predetermined recording medium stored in EEPROM 404.

[0057] The flowchart of FIG. 8 in this embodiment extracts recording medium candidates from the candidate group shown in FIG. 5(a).

[0058] In S801, the CPU 401 extracts recording media that fall within the extraction range based on the results of comparing the measured paper thickness of the target recording medium acquired by the optical sensor 201 with the paper thickness extraction range set for each recording medium stored in the EEPROM 404. The target recording medium is the recording medium to be used for printing, and refers to the recording medium inserted into the paper feed slot of the recording device 100 when the flowchart in FIG. 7 starts.

[0059] In S802, the CPU 401 determines whether or not any recording media have been extracted. If it is determined that any recording media have been extracted, the CPU 401 proceeds to S803. If no recording media have been extracted, the CPU 401 proceeds to S808, where information indicating that no recording media have been extracted is stored in the RAM 403, and the recording medium candidate extraction process ends.

[0060] In S803, the CPU 401 extracts recording media that are within the extraction range based on the result of comparing the diffuse reflection value of the target recording medium acquired by the optical sensor 201 with the extraction range of the diffuse reflection value stored in the EEPROM 404.

[0061] In S804, the CPU 401 determines whether or not any recording media have been extracted. If it is determined that any recording media have been extracted, the CPU 401 proceeds to S805. If no recording media have been extracted, the CPU 401 proceeds to S808, where information indicating that no recording media have been extracted is stored in the RAM 403, and the recording medium candidate extraction process ends.

[0062] In S805, the CPU 401 compares the specular reflection value of the target recording medium acquired by the optical sensor 201 with the extraction range of specular reflection values ​​stored in the EEPROM 404, and extracts recording media that are within the extraction range.

[0063] In S806, the CPU 401 determines whether or not any recording media have been extracted. If it is determined that any extracted recording media have been extracted, the CPU 401 proceeds to S807. If no recording media have been extracted, the CPU 401 proceeds to S808, where information indicating that no recording media have been extracted is stored in the RAM 403, and the recording medium candidate extraction process ends.

[0064] In S807, the CPU 401 stores information indicating the extracted recording medium in the RAM 403, and ends the storage medium candidate extraction process. The above is the detailed flowchart of S701.

[0065] Fig. 9 is a flowchart showing details of the processing for displaying a recording medium on the input / output unit 406 in S705 and S709 in Fig. 7. Fig. 9 shows three display methods, Fig. 9(a) to 9(c), as examples. Fig. 9(a) is a flowchart showing details of S705, and Fig. 9(b) or Fig. 9(c) is a flowchart showing details of S709.

[0066] 10 shows an example of a display on the input / output unit 406 corresponding to the flowchart of the display method in FIG. 9. The flowcharts and display examples are merely examples, and are not limited to these. Details of S705 will be explained below.

[0067] FIG. 9A is a flowchart showing a display method when at least one of the extracted recording medium candidates has usage history information. In S901, the CPU 401 displays "Paper 1 will be automatically fed (selection from a list is also possible)" in the comment area 41 of the input / output unit 406, as shown in FIG. 10A. In S902, the CPU 401 displays the types of recording media in the candidate display area 42 of the input / output unit 406 in order of recording medium priority, as shown in FIG. 10A. In S903, the CPU 401 displays the category of the highest-ranked recording medium at the top in the category display area 43 of the input / output unit 406, as shown in FIG. 10A, and displays categories in a predetermined order below that. Thereafter, the CPU 401 ends the processing of this flowchart. Note that the processing of S901 to S903 may be performed in any order or simultaneously. This also applies to S904 to S906 and S907 to S909, which will be described later.

[0068] 10(a), the second display in the category display area 43 is "plain paper" to indicate that the recording medium candidate next in rank to the three glossy papers displayed in the candidate display area 42 is a paper that corresponds to "plain paper." Therefore, for example, if the category of the recording medium that corresponds to the fourth ranking is "film paper," then "film paper" is displayed as the second display in the category display area 43.

[0069] Next, we will explain Figure 9(b), which shows the display process for recording medium candidates in S709. In Figure 9(b), if there are no recording media with usage history information among the extracted recording medium candidates, a message indicating that there are no recording medium candidates is displayed at the top of the candidate display area 42, and one of the extracted specific papers is displayed second. Furthermore, one of the extracted general-purpose papers is displayed third. Note that the priority order of specific paper and general-purpose paper may be reversed. In S904, the CPU 401 displays "Please select the paper to be fed from the list" in the comment area 41 of the input / output unit 406, as shown in Fig. 10(c). Also, in S905, the CPU 401 displays 1. "No selection candidates", 2. "Premium glossy paper (candidate for specific paper)", and 3. "Photo paper (thin) (candidate for general-purpose paper)" in the candidate display area 42 of the input / output unit 406, as shown in Fig. 10(c). Furthermore, in S906, the CPU 401 displays the category of the highest-ranked recording medium at the top in the category display area 43 of the input / output unit 406, as shown in Fig. 10(c), and displays categories in a predetermined order below that. This is the method for displaying candidates shown in Figure 9(b). When there is no recording medium with usage history information, candidates are extracted from both specific paper and general-purpose paper, as an example. This is to increase the likelihood that a paper that is familiar to the user (that the user has used) will be displayed as a candidate, regardless of whether the user has only ever used specific paper or general-purpose paper. In FIG. 9(c), the top of the candidate display reads "No candidates for selection." This is because candidates are extracted from recording media that do not have usage history information, and there is a possibility that the candidate intended by the user will not be displayed, so the user can infer that an automatic selection will not be made. In the display method shown in FIG. 9(b), one of the specific papers is displayed in the second position and one of the general-purpose papers is displayed in the third position as an example, but this is not limited to this. For example, among the extracted candidates, the second position may display a recording medium that is ranked highly in the "plain paper" category, and the third position may display a recording medium that is ranked highly in the "glossy paper" category.

[0070] Next, a display method using the flowchart of FIG. 9(c) will be described as an example different from the flowchart of FIG. 9(b) in S709. According to FIG. 9(c), in S907, the CPU 401 displays, in the comment area 41 of the input / output unit 406, a message indicating that the paper type will not be automatically determined, such as "Please select the paper type to be fed from the list (not automatically determined)," as shown in FIG. 10(d). In addition, in S908, the CPU 401 displays the types of recording media in the candidate display area 42 of the input / output unit 406 in the order of recording media priority, as shown in FIG. 10(d). Furthermore, in S909, the CPU 401 displays the highest-ranked recording medium category at the top of the category display area 43 of the input / output unit 406, as shown in FIG. 10(d), and displays categories in a predetermined order below that. The difference from the display method of FIG. 9(b) is that the extracted candidates are ranked and displayed starting from the top, and then a message indicating that the candidates will not be automatically determined is displayed in the comment display area 41 because these candidates do not have usage history information. The above is the display method in Figure 9(c). Figure 9(b) and Figure 9(c), which show the detailed processing of S709, both display candidates that do not have usage history information, so it can be seen that the display method is such that the final decision is made by user operation. This can reduce setting errors in print settings. 9(b) and 9(c) may be combined as appropriate. For example, the comment display area 41 may display "Please select the paper to be fed from the list," and the candidate display area 42 may display 1. "No candidates to select," with the rankings thereafter being displayed in the order in which the extracted candidates were ranked.

[0071] FIG. 10(e) shows an example of a display when displaying a table of category-only candidates in step S712 of FIG. 7. Because no recording media have been extracted, the entire candidate display area 42 displays "No Selection Candidates." The category display area 43 may also display the top categories of recording media most recently printed on based on the printing history information of the recording device 100. Alternatively, the category most frequently used for printing may be displayed. A specific recording medium may be designated as a representative for each category, and the characteristic values ​​of the representative recording medium may be determined in descending order of similarity. Alternatively, the differences between the characteristic values ​​of all recording media belonging to the category and the acquired characteristic value may be averaged, and the recording media may be determined in ascending order of similarity of characteristic value.

[0072] As described above, according to this embodiment, it is possible to improve user convenience when setting the recording medium to be used for printing. Specifically, even in a mode in which the fed recording medium is automatically determined, if there is no usage history information, it is possible to prevent an unintended recording medium type from being selected by waiting for the user to make a selection, thereby improving user convenience when determining the recording medium.

[0073] <Embodiment 2> In the first embodiment, even in the estimation automatic mode, if an extracted candidate does not have usage history information, the candidate is not automatically selected until the user performs a selection operation. In this embodiment, a display example different from that of the first embodiment is shown in the method of notifying the user when an extracted candidate does not have usage history information. Specifically, if an extracted recording medium candidate does not have usage history information, the recording medium candidate group is changed and candidate extraction is performed again. In this embodiment, the candidate group displayed in FIG. 5(a) is changed to the candidate group shown in FIGS. 5(b) to 5(d). FIGS. 5(b) to 5(d) each show candidate groups obtained by extracting specific types of candidates from the candidate group shown in FIG. 5(a). Below, the candidate display of this embodiment will be described with reference to FIGS. 5 and 11. Note that a description of the process similar to that described in FIG. 7 will be omitted.

[0074] (Flow for determining recording media) FIG. 11 is a flowchart showing the process of determining the recording medium in this embodiment. In S1101, the CPU 401 extracts recording medium candidates that meet a first extraction condition. Here, the first extraction condition is to extract candidates from the recording medium candidate group shown in Fig. 5(a), and this is the same processing as S701 in the first embodiment. Therefore, detailed description will be omitted.

[0075] In S1102, the CPU 401 determines whether or not the recording medium was extracted in S1101. If it is determined that the recording medium was not extracted, the process proceeds to S1109. Then, in S1109, the same process as in S712 is performed, and this flowchart ends. If it is determined that the extracted recording medium exists, the CPU 401 proceeds to S1103.

[0076] In S1103, the CPU 401 refers to the usage history information stored in the EEPROM 404 and determines whether any of the extracted recording medium candidates has usage history information. If it is determined that there is a recording medium with usage history information, the CPU 401 proceeds to S1104 and performs the same processing as S704 and S705. If it is determined that there is no recording medium with usage history information, the CPU 401 proceeds to S1106.

[0077] In S1106, the CPU 401 extracts recording medium candidates that meet the second extraction condition. Here, the second extraction condition refers to extracting recording medium candidates from a second recording medium candidate group that is equal to or less than the number of the first recording medium candidate group, using the flow shown in FIG. 7. For example, the second recording medium candidate group may be a candidate group obtained by selecting specific papers from the first recording medium candidate group, as shown in FIG. 5(b). Alternatively, the second recording medium candidate group may be a candidate group obtained by selecting general-purpose papers from the first recording medium candidate group, as shown in FIG. 5(c). The second recording medium candidate group may also be a candidate group obtained by selecting one type of recording medium for each recording medium category, as shown in FIG. 5(d), or a candidate group obtained by selecting representative recording media, as shown in FIG. 5(e). Priorities may also be determined for specific papers and general-purpose papers using FIGS. 5(b) and 5(c), and then displayed as candidates. Furthermore, the priority may be set for each sales destination of the information processing device.

[0078] In this embodiment, a method for determining the priority order of specific paper and general-purpose paper will be described with reference to FIGS. 5(b) and 5(c).

[0079] In step S1107, the CPU 401 ranks the recording media extracted according to the second extraction condition. The ranking criteria are the same as those described in step S704.

[0080] In S1108, the CPU 401 displays the recording media based on the ranking in S1107. In this embodiment, the priority order of specific paper and general-purpose paper is determined using FIGS. 5(b) and 5(c) as the second extraction condition, and therefore the display method is the same as that in FIG. 9(b). Therefore, the input / output unit 406 displays a display such as that shown in FIG. 10(c). Here, the specific paper displayed in 2. of the candidate display area 42 of the input / output unit 406 is the recording medium determined to have the highest priority among the specific paper in S1107. In other words, it is the highest candidate among the recording media extracted from the group of specific paper candidates shown in FIG. 5(b). Also, the general-purpose paper displayed in 3. of the candidate display area 42 of the input / output unit 406 is the recording medium determined to have the highest priority among the general-purpose paper in S1107. In other words, it is the highest candidate among the recording media extracted from the group of general-purpose paper candidates shown in FIG. 5(c). The reason why the first candidate displays "No candidates to select" is that the candidates are extracted from recording media that do not have usage history information, and there is a possibility that the candidate that the user intended is not displayed, so the user can infer that it will not be automatically selected.

[0081] This concludes the description of candidate display in this embodiment. When there is no recording medium with usage history information under the first extraction condition, candidates are extracted from both specific paper and general-purpose paper, for example. This is to increase the likelihood that a paper that is familiar to the user (that the user has used) will be displayed as a candidate, regardless of whether the user has only used specific paper or general-purpose paper.

[0082] In the above description, the second extraction condition was used to display candidates using both Figures 5(b) and 5(c). However, for example, if a user has only ever used general-purpose paper, the second extraction condition may be set to extract candidates from the general-purpose paper candidate group shown in Figure 5(c). The final candidates displayed are selected from general-purpose papers that are likely to be familiar to the user, which is expected to reduce the user's confusion when selecting a paper type. Below, the flow of candidate display when using Figure 5(c) as the second extraction condition is described. Note that the following explanation uses examples of the final candidate display for each embodiment to illustrate the differences between the display methods used in the first embodiment and the second embodiment. To compare the first and second embodiments, we will also explain the case where none of the recording medium candidates extracted in S703 and S1103 have usage history information. In both cases, we will explain the display method using the third display method, which combines Figures 9(b) and 9(c) described above. That is, the comment display area 41 displays "Please select the paper to be fed from the list," and the candidate display area 42 displays 1. "There are no candidates to select," with subsequent rankings being displayed in the order in which the extracted candidates were ranked.The following explanation will be given assuming that the measured values ​​of the recording medium used by the user for printing are a specular reflection value of 1000, a diffuse reflection value of 1000, and a paper thickness of 280.

[0083] (Display example using embodiment 1) When candidates are extracted from the candidate group in FIG. 5(a) using the above measurement values ​​in S701 of FIG. 7, "premium glossy paper," "premium semi-glossy paper," and "heavy photo paper" are extracted. If none of these have usage history information, ranking using formula (1) in S708 results in the following order: 1. "premium glossy paper," 2. "premium semi-glossy paper," and 3. "heavy photo paper." When the candidates are displayed using the third display method in S709, the display is as shown in FIG. 10(f). That is, 1. "No candidate for selection," 2. "premium glossy paper," and 3. "premium semi-glossy paper." Note that in this case, a message indicating that automatic selection will not be made may be displayed in the comment display area 41, and 1. "premium glossy paper," 2. "premium semi-glossy paper," and 3. "heavy photo paper" may be displayed in the candidate display area 42.

[0084] (Display example using embodiment 2) In contrast, a similar explanation will be given using the flowchart of the second embodiment. When candidates are extracted from the candidate group of FIG. 5(a) using the above measurement values ​​in S1101 of FIG. 11, "Premium Glossy Paper," "Premium Semi-Glossy Paper," and "Photo Paper (Thick)" are extracted. If there is no usage history information for any of these, candidates are extracted using the second extraction condition in S1106. As described above, in this example, it is assumed that the user has set the candidate group, which stores only general-purpose paper as shown in FIG. 5(c), as the second extraction condition. Therefore, the candidate extracted by the second extraction condition is only "Photo Paper (Thick)." When displayed using the third display method, it becomes as shown in FIG. 10(g). That is, 1. "No candidate for selection," 2. "Photo Paper (Thick)," and 3. "No candidate for selection." Note that in this case, an explanation that automatic selection will not be made is displayed in the comment display area 41, and 1. "Photo Paper (Thick)," 2. "No candidate for selection," and 3. "No candidate for selection" may be displayed in the candidate display area 42.

[0085] Comparing this result with that of embodiment 1, it can be seen that the specific paper is not listed as a candidate. For users who have never used specific paper, the display of specific paper as a candidate may cause confusion, but by listing only general-purpose paper that is familiar to users as a candidate, it is expected that confusion will be eliminated.

[0086] 5(b) to (d) may be selected by the user in advance and used as the second extraction condition. Also, the recording device 100 may determine a group of recording medium candidates to be used as the second extraction condition based on the user's usage status of the recording medium.

[0087] Here, the recording medium may be displayed in the following manner.

[0088] For example, as shown in FIG. 10(h), general-purpose paper is displayed in 1 and 2 of the candidate display area 42 of the input / output unit 406, and specific paper is displayed in 3. As shown in FIG. 10(i), "No paper candidate" is displayed in 1, a general-purpose paper candidate in 2, and a specific paper candidate in 3 in the candidate display area 42 of the input / output unit 406. Alternatively, as shown in FIG. 10(j), general-purpose paper is displayed in 1 of the candidate display area 42 of the input / output unit 406, and specific paper is displayed in 2 and 3. Alternatively, as shown in FIG. 10(k), specific paper is displayed in 1 and 2 of the candidate display area 42 of the input / output unit 406, and general-purpose paper is displayed in 3. FIGS. 10(h) to 10(k) are examples of candidate display when, for example, both the candidate groups of FIGS. 5(b) and (c) are used as the second extraction conditions.

[0089] Fig. 10(l) is an example of candidate display when Fig. 5(b) is the second extraction condition, and Fig. 10(m) is an example of candidate display when Fig. 5(c) is the second extraction condition.

[0090] In addition, in the candidate display area 42, the priority order may be determined so that lower-level recording media are selected from the same category as the higher-level recording media. That is, as shown in FIG. 10(n), lower-level candidates may be displayed starting from "Glossy Paper," which is the category of "Premium Glossy Paper," which is the higher-level candidate. As a result, the following will be displayed: 1. "No candidates available for selection," 2. "Premium Glossy Paper," and 3. "Premium Semi-Glossy Paper."

[0091] 10(o), the candidate display area 42 of the input / output unit 406 may not be present, and a large display may be made in the category display area 43. Alternatively, as shown in FIG. 10(p), the message "No candidates for selection" may be displayed in 1 of the candidate display area 42 of the input / output unit 406, and the other area may be used as the category display area 43. Alternatively, a fixed recording medium may always be displayed in the candidate display area 42.

[0092] As described above, according to this embodiment, even if the extracted candidate does not have usage history information, it is possible to present a recording medium that is more likely to be suitable for the user, thereby improving user convenience when deciding on a recording medium.

[0093] <Other embodiments> The present disclosure can also be realized by supplying a program that realizes one or more functions of the above-described embodiments to a system or device via a network or a storage medium, and having one or more processors in the computer of the system or device read and execute the program. It can also be realized by a circuit (e.g., ASIC) that realizes one or more functions.

[0094] The present disclosure also includes the following configurations.

[0095] (Configuration 1) an acquisition means for acquiring characteristic values ​​of paper inserted into a paper feed slot; an extraction unit that extracts candidates to be used for print settings of the inserted paper from the first candidate group based on a comparison result between the acquired characteristic values ​​and the characteristic values ​​of each of a first candidate group of paper types stored in a storage unit; a display control means for displaying a print setting screen including the extracted candidates on a display unit; a determining means for determining print parameters for the inserted paper based on history information indicating a history of paper types used and the extracted candidates; A recording device comprising: (Configuration 2) The display control means If the paper type related to the candidate extracted from the first candidate group is not included in the history information, a first print setting screen in which the extracted candidates are ranked based on a predetermined criterion is displayed on the display unit. The recording device described in configuration 1 is characterized in that, when the paper type related to a candidate extracted from the first candidate group is included in the history information, a second print setting screen is displayed on the display unit, in which the extracted candidate is ranked among the candidates for which the history information is included. (Configuration 3) The determining means If the paper type related to the candidate extracted from the first candidate group is not included in the history information, the candidate selected by a user operation on the first print setting screen is determined as the print parameter to be used for printing; The recording device described in configuration 2 is characterized in that, when the paper type related to a candidate extracted from the first candidate group is included in the history information, one of the candidates displayed on the display unit is automatically determined as the printing parameter for the inserted paper, even if a candidate is not selected by user operation on the second print setting screen. (Configuration 4) The determination unit, on the second print setting screen, If a candidate is selected by a user operation within a predetermined time, the selected candidate is determined as the printing parameter for the inserted paper; The recording device according to configuration 3, characterized in that if no user operation is performed within the predetermined time, one of the candidates displayed on the display unit is automatically determined as the printing parameters for the inserted paper. (Configuration 5) 3. The recording device according to configuration 2, wherein the first print setting screen includes a message indicating that automatic determination will not be performed. (Configuration 6) 3. The recording device according to configuration 2, wherein the first print setting screen displays a message indicating that there are no candidates at the top. (Configuration 7) 7. The recording apparatus according to any one of configurations 1 to 6, wherein the first candidate group is a candidate group that includes all paper types stored in the storage unit. (Configuration 8) 8. The recording apparatus according to any one of configurations 1 to 7, wherein the characteristic values ​​include a paper thickness, a specular reflection value, and a diffuse reflection value. (Configuration 9) The recording device according to configuration 2, wherein the predetermined criterion indicates that the candidate with the smaller absolute value of the sum of squares of the differences between each characteristic value of the extracted candidate and the measured value of each characteristic value of the paper used for printing is ranked higher. (Configuration 10) The recording device according to configuration 2, characterized in that the predetermined criteria indicate that general-purpose paper has a higher priority than specific paper, or that specific paper has a higher priority than specific paper. (Configuration 11) When the paper type related to the candidate extracted from the first candidate group is not included in the history information, the extraction means further extracts a second candidate group selected from the first candidate group based on specific conditions, and candidates to be used for print settings of the inserted paper based on the acquired characteristic values ​​and comparison results; the display control means displays a print setting screen including the further extracted candidates on a display unit. 2. The recording device according to configuration 1. (Configuration 12) 12. The recording apparatus according to claim 11, wherein the second candidate group is a candidate group obtained by selecting the first candidate group as a specific paper. (Configuration 13) 12. The recording apparatus according to configuration 11, wherein the second candidate group is a candidate group obtained by sorting the first candidate group into general-purpose paper. (Configuration 14) 12. The recording apparatus according to configuration 11, wherein the second candidate group is a candidate group obtained by selecting one type from the first candidate group for each paper category. (Configuration 15) 15. The recording device according to claim 14, wherein the paper categories include plain paper, coated paper, glossy paper, and film paper. (Configuration 16) 12. The recording apparatus according to configuration 11, wherein the second candidate group is a candidate group obtained by selecting representative paper types from the first candidate group. (Configuration 17) 12. The recording apparatus according to configuration 11, wherein the second candidate group is a candidate group obtained by sorting the first candidate group into paper types suitable for the destination. (Configuration 18) When the paper type related to the candidate extracted from the first candidate group is not included in the history information, the extraction means further extracts candidates to be used for print settings of the inserted paper from each of a candidate group selected as specific paper from the first candidate group and a candidate group selected as general-purpose paper from the first candidate group, 2. The recording device according to configuration 1, wherein the display control means displays a print setting screen including the further extracted candidates on a display unit. (Configuration 19) The recording device described in configuration 1, characterized in that if the extraction means is unable to extract a candidate from the first candidate group, the display control means displays a category of recording media as a print setting screen on the display unit. (Configuration 20) an acquisition step of acquiring characteristic values ​​of paper inserted into a paper feed slot; an extraction step of extracting candidates to be used for print settings of the inserted paper from the first candidate group based on a comparison result between the acquired characteristic values ​​and characteristic values ​​of each of a first candidate group of paper types stored in a storage unit; a display control step of displaying a print setting screen including the extracted candidates on a display unit; a determining step of determining print parameters for the inserted paper based on history information indicating a history of paper types used and the extracted candidates; 10. A method for controlling a recording apparatus, comprising: (Configuration 21) A program that operates in a recording device, the recording device comprising: an acquisition means for acquiring characteristic values ​​of paper inserted into a paper feed slot; an extraction unit that extracts candidates to be used for print settings of the inserted paper from the first candidate group based on a comparison result between the acquired characteristic values ​​and the characteristic values ​​of each of a first candidate group of paper types stored in a storage unit; a display control means for displaying a print setting screen including the extracted candidates on a display unit; a determining means for determining print parameters for the inserted paper based on history information indicating a history of paper types used and the extracted candidates; A program characterized by functioning as

Claims

1. an acquisition means for acquiring characteristic values ​​of paper inserted into a paper feed slot; an extraction unit that extracts candidates to be used for print settings of the inserted paper from the first candidate group based on a comparison result between the acquired characteristic values ​​and the characteristic values ​​of each of a first candidate group of paper types stored in a storage unit; a display control means for displaying a print setting screen including the extracted candidates on a display unit; a determining means for determining print parameters for the inserted paper based on history information indicating a history of paper types used and the extracted candidates; A recording device comprising:

2. The display control means If the paper type related to the candidate extracted from the first candidate group is not included in the history information, a first print setting screen in which the extracted candidates are ranked based on a predetermined criterion is displayed on the display unit. A recording device as described in claim 1, characterized in that if the paper type related to a candidate extracted from the first candidate group is included in the history information, a second print setting screen is displayed on the display unit, ranking the extracted candidate among the candidates for which the history information is available.

3. The determining means If the paper type related to the candidate extracted from the first candidate group is not included in the history information, the candidate selected by a user operation on the first print setting screen is determined as the print parameter to be used for printing; A recording device as described in claim 2, characterized in that if the paper type related to a candidate extracted from the first candidate group is included in the history information, one of the candidates displayed on the display unit is automatically determined as the printing parameter for the inserted paper, even if a candidate is not selected by user operation on the second print setting screen.

4. The determination unit, on the second print setting screen, If a candidate is selected by a user operation within a predetermined time, the selected candidate is determined as the printing parameter for the inserted paper; 4. The recording device according to claim 3, wherein if no user operation is performed within the predetermined time, one of the candidates displayed on the display unit is automatically determined as the printing parameters for the inserted paper.

5. 3. The recording apparatus according to claim 2, wherein the first print setting screen includes a message indicating that automatic determination is not performed.

6. 3. The recording apparatus according to claim 2, wherein the first print setting screen displays a message indicating that there are no candidates at the top.

7. 2. The recording apparatus according to claim 1, wherein the first candidate group is a candidate group that includes all paper types stored in the storage unit.

8. 2. The recording apparatus according to claim 1, wherein the characteristic values ​​include a paper thickness, a specular reflection value, and a diffuse reflection value.

9. The recording device according to claim 2, characterized in that the predetermined criterion indicates that the candidate with the smaller absolute value of the sum of squares of the differences between each characteristic value of the extracted candidate and the measured value of each characteristic value of the paper used for printing is ranked higher.

10. 3. The recording device according to claim 2, wherein the predetermined criteria indicate that general-purpose paper has a higher priority than specific paper, or that specific paper has a higher priority than specific paper.

11. When the paper type related to the candidate extracted from the first candidate group is not included in the history information, the extraction means further extracts a second candidate group selected from the first candidate group based on specific conditions, and candidates to be used for print settings of the inserted paper based on the acquired characteristic values ​​and comparison results; the display control means displays a print setting screen including the further extracted candidates on a display unit.

2. The recording apparatus according to claim 1, wherein the recording apparatus is a recording medium.

12. 12. The recording apparatus according to claim 11, wherein the second candidate group is a candidate group obtained by selecting the first candidate group as a specific paper.

13. 12. The recording apparatus according to claim 11, wherein the second candidate group is a candidate group obtained by selecting general-purpose paper from the first candidate group.

14. 12. The recording apparatus according to claim 11, wherein the second candidate group is a candidate group obtained by selecting one type from the first candidate group for each paper category.

15. 15. The recording apparatus of claim 14, wherein the paper categories include plain paper, coated paper, glossy paper, and film paper.

16. 12. The recording apparatus according to claim 11, wherein the second candidate group is a candidate group obtained by selecting representative paper types from the first candidate group.

17. 12. The recording apparatus according to claim 11, wherein the second candidate group is a candidate group obtained by sorting the first candidate group into paper types suitable for a destination.

18. When the paper type related to the candidate extracted from the first candidate group is not included in the history information, the extraction means further extracts candidates to be used for print settings of the inserted paper from each of a candidate group selected as specific paper from the first candidate group and a candidate group selected as general-purpose paper from the first candidate group, 2. The recording apparatus according to claim 1, wherein the display control means displays a print setting screen including the further extracted candidates on a display unit.

19. The recording device according to claim 1, characterized in that if the extraction means is unable to extract a candidate from the first group of candidates, the display control means displays a category of recording media as a print setting screen on the display unit.

20. an acquisition step of acquiring characteristic values ​​of paper inserted into a paper feed slot; an extraction step of extracting candidates to be used for print settings of the inserted paper from the first candidate group based on a comparison result between the acquired characteristic values ​​and characteristic values ​​of each of a first candidate group of paper types stored in a storage unit; a display control step of displaying a print setting screen including the extracted candidates on a display unit; a determining step of determining print parameters for the inserted paper based on history information indicating a history of paper types used and the extracted candidates; 10. A method for controlling a recording apparatus, comprising:

21. A program that operates in a recording device, the recording device comprising: an acquisition means for acquiring characteristic values ​​of paper inserted into a paper feed slot; an extraction unit that extracts candidates to be used for print settings of the inserted paper from the first candidate group based on a comparison result between the acquired characteristic values ​​and the characteristic values ​​of each of a first candidate group of paper types stored in a storage unit; a display control means for displaying a print setting screen including the extracted candidates on a display unit; a determining means for determining print parameters for the inserted paper based on history information indicating a history of paper types used and the extracted candidates; A program characterized by functioning as

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