JP7388055B2 - Image forming device, control method, program and storage medium thereof - Google Patents

Description

The present disclosure relates to an image forming apparatus, and more particularly, to paper basis weight detection control technology.

2. Description of the Related Art In recent years, image forming apparatuses such as MFPs (Multifunction Peripherals) are generally equipped with a media detection sensor to determine whether paper, envelopes, or the like are print media. The media detection sensor uses an optical sensor or the like to detect the basis weight of paper being conveyed within the image forming apparatus. The control unit of the image forming apparatus can determine the type of paper based on the basis weight.

In many cases, the paper used for printing differs depending on the country or region. Furthermore, even papers with the same name may have different basis weights depending on the country or region. Therefore, in each image forming apparatus, different basis weight settings are set in advance for each region to which the image forming apparatus is shipped. However, with the development of the global economy, paper from different regions may be used in one region, and conventional image forming apparatuses are no longer able to cope with such situations.

Regarding the media detection process, for example, Japanese Patent Laid-Open No. 2012-145858 (Patent Document 1) describes "a means for storing a recording paper discrimination threshold value, a means for detecting information regarding an image forming apparatus, and a means for varying the recording paper discrimination threshold value. The document discloses an image forming apparatus that has means for varying a recording paper discrimination threshold according to information regarding the image forming apparatus (see [Summary]).

Japanese Patent Application Publication No. 2012-145858

According to the technique disclosed in Patent Document 1, the basis weight setting of the image forming apparatus cannot be changed based on the user's usage after the image forming apparatus is shipped. Therefore, there is a need for a technique for changing the basis weight setting of an image forming apparatus based on the user's usage after the image forming apparatus is shipped.

The present disclosure has been made in view of the above background, and an object of the present disclosure in one aspect is to provide a technology for changing the basis weight setting of an image forming apparatus based on the user's usage after the image forming apparatus is shipped. It is about providing.

An image forming apparatus according to an embodiment includes a storage unit that stores a plurality of basis weight threshold information, a setting acquisition unit that accepts changes in regional settings, a basis weight acquisition unit that measures the basis weight of paper, and a control unit. Equipped with. Each of the plurality of basis weight threshold information is associated with each of the plurality of regions, and the control unit selects the basis weight threshold information to be used from among the plurality of basis weight threshold information based on the change in the regional setting, The type of paper is determined based on the basis weight of the paper measured by the basis weight acquisition unit and the selected basis weight threshold information.

In one aspect, the image forming apparatus further includes a display that displays a plurality of regions, and a touch panel for selecting one of the plurality of regions. The setting acquisition unit receives changes in regional settings based on input from the touch panel while the image forming apparatus is operating in a normal mode.

In one aspect, the image forming apparatus further includes a cassette that stores paper. The cassette includes a sensor that measures the width and depth of the paper, and the setting acquisition unit receives changes in the regional settings based on the detected values of the sensor while the image forming apparatus is operating in the normal mode.

In one aspect, an image forming apparatus is connected to an external device via a network. The setting acquisition unit acquires information regarding regional settings from an external device while the image forming apparatus is operating in a normal mode, and receives changes to the regional settings based on the information regarding the regional settings.

In one aspect, each of the plurality of basis weight threshold information includes a plurality of basis weight ranges set for each paper type. Determining the paper type includes determining the paper type based on which of a plurality of basis weight ranges the basis weight value measured by the basis weight acquisition unit falls within.

In one aspect, the control unit corrects the basis weight threshold information based on at least one of a paper manufacturing error, a circuit error of the image forming apparatus, an error of the basis weight acquisition unit, or aging deterioration of the image forming apparatus.

In one aspect, the basis weight acquisition unit includes optical sensors on a transmitting side and a receiving side, and acquires light transmittance and reflectance of the paper. Determining the paper type includes determining the paper type based on light transmittance and light reflectance.

According to another embodiment, a method of controlling an image forming apparatus is provided. This control method includes the steps of: storing a plurality of basis weight threshold information associated with each of a plurality of regions; accepting a change in regional settings; a step of selecting basis weight threshold information to be used from among; a step of measuring the basis weight of paper conveyed within the image forming apparatus; and a step based on the measured basis weight of the paper and the selected basis weight threshold information. and determining the paper type.

In one aspect, the control method further includes the steps of displaying a plurality of regions on a display, and accepting a change in region settings based on an input on a touch panel while the image forming apparatus is operating in a normal mode. .

In one aspect, the control method includes the step of detecting the width and depth of the paper stored in the cassette, and setting the regional settings based on the detected values of the width and depth of the paper while the image forming apparatus is operating in a normal mode. The method further includes the step of changing the .

In one aspect, the control method includes the steps of: obtaining information regarding regional settings from an external device connected to the image forming apparatus via a network while the image forming apparatus is operating in a normal mode; and changing the regional settings.

In one aspect, each of the plurality of basis weight threshold information includes a plurality of basis weight ranges set for each paper type. The step of determining the paper type includes determining the paper type based on which of a plurality of basis weight ranges the basis weight value measured by the basis weight acquisition unit falls within.

In one aspect, the control method includes the step of correcting the basis weight threshold information based on at least one of paper manufacturing errors, circuit errors of the image forming apparatus, errors of the basis weight acquisition unit, or aging deterioration of the image forming apparatus. further including.

In one aspect, the control method further includes the step of obtaining the light transmittance and reflectance of the paper conveyed by the image forming apparatus using an optical sensor. The step of determining the paper type includes determining the paper type based on light transmittance and light reflectance.

According to another embodiment, a program is provided that causes an image forming apparatus to execute any of the control methods described above.

According to another embodiment, there is provided a storage medium that is readable by the image forming apparatus and stores a program that causes the image forming apparatus to execute any of the control methods described above.

According to the present technology, it is possible to change the basis weight setting of the image forming apparatus based on the user's usage after shipping.

These and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the invention, taken in conjunction with the accompanying drawings.

1 is a diagram illustrating a configuration example of an image forming apparatus 100 according to an embodiment. 3 is a diagram illustrating an example of a portion of a media detection sensor 125 in the image forming apparatus 100. FIG. 2 is a diagram showing an example of a detailed configuration of an optical sensor 201. FIG. It is a figure which shows an example of the basis weight threshold value table by country graphically. It is a figure which shows another example of a basis weight threshold value table graphed. It is a figure which shows an example of the data format of a basis weight threshold value table. It is a figure which shows an example of the setting screen 700 of a basis weight threshold value table. 3 is a diagram showing an example of the internal structure of a cassette 132. FIG. 1 is a diagram illustrating an example of a system configuration for setting a basis weight threshold table in an image forming apparatus 100. FIG. 7 is a diagram illustrating an example of a procedure for setting a basis weight threshold table in the image forming apparatus 100 using a setting screen 700. FIG. 7 is a diagram illustrating an example of a procedure for setting a basis weight threshold table in the image forming apparatus 100 using sensors 801 and 802 of the cassette 132. FIG.

Hereinafter, embodiments of the technical idea according to the present disclosure will be described with reference to the drawings. In the following description, the same parts are given the same reference numerals. Their names and functions are also the same. Therefore, detailed descriptions thereof will not be repeated.

FIG. 1 is a diagram showing a configuration example of an image forming apparatus 100 according to the present embodiment. Referring to FIG. 1, the configuration of image forming apparatus 100 according to this embodiment will be described. The image forming apparatus 100 includes a document reading section 110, a print engine 120, an ejection tray 121, and a paper feed cabinet section 140.

The document reading unit 110 includes an operation panel 111, an ADF (Auto Document Feeder) 112, an IR (Infrared) unit 113, and a scanner 114. The print engine 120 includes an imaging unit 129 that forms cyan (C), magenta (M), yellow (Y), and key plate (K) toner images, an intermediate transfer belt 128, a fixing section 122, It includes a transfer roller 123 , a registration roller 124 , a media detection sensor 125 , a transport roller 126 , a paper feed roller 127 , a control section 130 , a power supply section 131 , and a cassette 132 . Paper feed cabinet section 140 includes an expansion cassette 132.

The document reading unit 110 reads a document and outputs the reading result as an input image to the print engine 120. The ADF 112 continuously scans a document placed on a document feed tray. IR unit 113 accepts operations using infrared signals. The scanner 114 scans an original placed on a platen glass. The documents placed on the document feed tray are fed one by one by a delivery roller (not shown) and are sequentially scanned by an image sensor placed in the scanner 114 or the ADF 112.

Operation panel 111 includes a touch panel and a button operation section. A touch panel has a touch sensor built into a liquid crystal monitor or the like, and is capable of displaying an operation menu and accepting touch input from a user. The button operation section includes a plurality of buttons, and each button receives input from the user like a touch panel.

The print engine 120 performs printing processing on the paper in one of the cassettes 132. Paper feed roller 127 feeds paper from inside cassette 132 to the transport path. Conveyance rollers 126 convey the paper further downstream. The registration roller 124 is located before the transfer roller 123 and adjusts the conveyance timing of the paper. The media detection sensor 125 detects the type of paper being conveyed before the registration rollers 124. In some aspects, media detection sensor 125 may include an optical sensor. In that case, the control unit 130 can determine the basis weight, thickness, etc. of the paper based on the light transmittance or reflectance of the paper. Transfer roller 123 transfers the toner image onto paper. The fixing unit 122 performs fixing processing on paper. Finally, the paper is ejected onto the ejection tray 121.

Each imaging unit 129 and intermediate transfer belt 128 forms a toner image that is transferred to paper. Each imaging unit 129 includes a photoreceptor, a charging section, an exposure section, a developing section, and a cleaning section. The charging unit uniformly charges the surface of the photoreceptor. The exposure section forms an electrostatic latent image on the surface of the photoreceptor by exposing the surface of the photoreceptor to light according to a designated image pattern by laser writing or the like. The developing section develops the electrostatic latent image formed on the photoreceptor, which is an image carrier, as a toner image. The cleaning section cleans toner remaining on the surface of the photoreceptor.

The toner image formed on the surface of the photoreceptor is transferred to the intermediate transfer belt 128. Toner images are sequentially transferred from each photoreceptor onto the intermediate transfer belt 128, and the four color toner images are superimposed. The superimposed toner images are transferred from intermediate transfer belt 128 to paper by transfer roller 123.

The control unit 130 controls the entire image forming apparatus 100. Control unit 130 may include a CPU (Central Processing Unit) and memory. In that case, the memory stores data referenced by the CPU and programs executed by the CPU. The power supply unit 131 is connected to an AC power source and supplies power to the image forming apparatus 100.

FIG. 2 is a diagram showing an example of a portion of the media detection sensor 125 in the image forming apparatus 100. In FIG. 2, an optical sensor 201 is provided along the conveyance path upstream from the registration rollers 124. The optical sensor 201 can be mainly used to detect the basis weight of paper.

Optical sensor 201 includes a transmitting optical sensor 201A and a receiving optical sensor 201B. The transmitting optical sensor 201A irradiates light toward the paper when the paper is located between the transmitting optical sensor 201A and the receiving optical sensor 201B. A portion of the light emitted from the transmitting optical sensor 201A passes through the paper and is received by the receiving optical sensor 201B. The control unit 130 detects the basis weight of the paper based on the amount of light received by the receiving optical sensor 201B.

The control unit 130 can determine the type of paper based on the detected basis weight of the paper. The control unit 130 also refers to a basis weight threshold table in which basis weight ranges and paper types are associated with each other from the memory. The control unit 130 can determine the type of paper based on the detected basis weight of the paper and the basis weight threshold table.

FIG. 3 is a diagram showing an example of a detailed configuration of the optical sensor 201. The optical sensor 201 includes a near-infrared LED (Light Emitting Diode) 301 and a blue LED 302 that are light sources for transmission, a reflector 303, a green LED 304 that is a light source for reflection, and a photodiode 305.

Near-infrared LED 301 and blue LED 302 irradiate light onto paper 310 that is being transported. The photodiode 305 receives each color of light transmitted through the paper 310. The control unit 130 can determine the basis weight of the paper 310 based on the amount of light of each color received by the photodiode 305. The green LED 304 is arranged on the same side as the photodiode 305 when viewed from the transport path. The photodiode 305 receives the light from the green LED 304 reflected by the paper 310. The control unit 130 can detect paper quality, such as roughness on the surface of the paper, based on the amount of reflected light from the green LED 304 that the photodiode 305 receives. The reflecting plate 303 is green and reflects the light from the green LED 304. The control unit 130 detects the paper quality of the surface of the paper based on the light from the green LED 304 reflected by the reflection plate 303.

The control unit 130 detects the basis weight of the paper based on the signal output from the optical sensor 201 described above. A basis weight threshold table is stored in the memory of the control unit 130. The control unit 130 can identify the type of paper being conveyed based on the detected basis weight of the paper and the basis weight threshold table. The basis weight threshold table is usually created for each country or region. More specifically, the basis weight threshold table is created according to the paper used in each country. Therefore, even if the image forming apparatuses are manufactured by the same manufacturer, the basis weight threshold tables set will differ depending on the countries to which they are shipped.

Next, the basis weight threshold table will be explained with reference to FIGS. 4 to 6. FIG. 4 is a diagram illustrating an example of a basis weight threshold table for each country in a graph. As an example, the basis weight threshold tables in FIGS. 4(A) to 4(D) all include "thin paper", "plain paper", "plain paper+", "thick paper 1", "thick paper 1+", " This includes the range of basis weight thresholds for "Thick Paper 2", "Thick Paper 3", and "Thick Paper 4". The control unit 130 can determine the type of paper based on which paper type's basis weight threshold range the detected paper falls within.

Comparing the basis weight threshold tables in FIGS. 4(A) to 4(D), it can be seen that, for example, the basis weight threshold ranges of "cardboard 1" and "cardboard 1+" are each significantly different. Therefore, when the basis weight threshold table for paper distributed in North America shown in FIG. The forming apparatus 100 may not be able to accurately determine the type of paper.

FIG. 5 is a diagram showing another example of a graphed basis weight threshold table. FIG. 5A is a basis weight threshold table for paper in units of centimeters. FIG. 5(B) is a basis weight threshold table for paper in units of inches. The inch is a unit mainly used in the United States, and the centimeter is used in Europe and Asia.

FIG. 6 is a diagram showing an example of the data format of the basis weight threshold table. For example, the image forming apparatus 100 may store the basis weight threshold tables shown in FIGS. 4 and 5 in the table format of a relational database in the memory of the control unit 130, as shown in FIG. In FIG. 6, for example, the threshold value range for thin paper is "c1 to d1" and the range for plain paper is "c2 to d2" in paper units measured in centimeters. The range of the threshold value for plain paper+ is "e3 to f3", and the range of the threshold value for thick paper 1 is "e4 to f4" for paper in units of inches. Note that the basis weight threshold table shown in FIG. 6 is an example, and the basis weight threshold table may include basis weight thresholds of any type of paper classified by region, unit, or the like. Furthermore, the range of the basis weight threshold may be set arbitrarily. In one aspect, the basis weight threshold table may be expressed in any other data format such as JSON (JavaScript Object Notation). In another aspect, the control unit 130 performs the control based on at least one of a paper manufacturing error, a circuit error of the image forming apparatus 100, an error of the media detection sensor 125, or aging deterioration of the image forming apparatus 100. The data in the basis weight threshold table No. 6 may be modified.

As described above, since paper in circulation differs depending on the country or region, image forming apparatuses are generally shipped with a basis weight threshold table set according to the region of sale. Therefore, as long as the user used paper that was distributed in the area where the image forming apparatus was sold, no problems occurred. However, as economic globalization progresses and many multinational companies are expanding their business around the world, it has become increasingly common for one region to use paper that is distributed in another region. For example, if a US company is expanding its business around the world, it is conceivable that the US head office would specify to the Japanese branch office paper distributed in North America as the printing paper. Conventional image forming apparatuses were shipped with a basis weight threshold table set for each sales region, and therefore could not cope with such a situation. Image forming apparatus 100 according to the present embodiment has a function that can appropriately change the basis weight threshold table in order to cope with such a situation. A method of changing the basis weight threshold table will be described below with reference to FIGS. 7 to 9.

FIG. 7 is a diagram showing an example of a basis weight threshold table setting screen 700. Setting screen 700 is displayed on operation panel 111. When the image forming apparatus 100 is operating in the normal mode, the user can open the setting screen 700 from the menu screen of the operation panel 111 at any time and select the basis weight threshold table or regional setting to be used. The control unit 130 selects the basis weight threshold table to be used based on the basis weight threshold table selected on the setting screen 700 or the regional settings, and refers to the selected basis weight threshold table to determine the paper type. Discern.

FIG. 8 is a diagram showing an example of the internal structure of the cassette 132. The cassette 132 includes a sensor 801 that detects the width of the sheets stored in the cassette 132, and a sensor 802 that detects the depth of the sheets stored in the cassette 132. Based on the signals obtained from the sensors 801 and 802, the control unit 130 can, for example, switch between a basis weight threshold table for paper in centimeters and a basis weight threshold table for paper in inches. In another example, the control unit 130 may obtain regional information such as inches in the United States and centimeters in other countries based on the signals obtained from the sensors 801 and 802. Based on the regional information, the control unit 130 can switch between a basis weight threshold table for paper in centimeters and a basis weight threshold table for paper in inches. The control unit 130 determines the type of paper by referring to the selected basis weight threshold table.

FIG. 9 is a diagram illustrating an example of a system configuration for setting a basis weight threshold table in the image forming apparatus 100. Image forming apparatus 100 is connected to external device 910 via network 930. For example, the external device 910 transmits information regarding any of the sheets 901 to 904 scheduled to be delivered to the office to the image forming apparatus 100. While operating in the normal mode, the control unit 130 can select the basis weight threshold table to be used based on the received information regarding the paper scheduled to arrive (basis weight threshold table, regional setting, etc.).

In one aspect, the control unit 130 creates a basis weight threshold table based on at least one of paper manufacturing errors, circuit errors of the image forming apparatus 100, measurement errors of the media detection sensor 125, or aging deterioration of the image forming apparatus 100. You may modify the contents.

FIG. 10 is a diagram illustrating an example of a procedure for setting a basis weight threshold table in the image forming apparatus 100 using the setting screen 700. In one aspect, the control unit 130 may read a program for performing the processing in FIG. 10 from the memory and execute the program. In other aspects, part or all of the processing may be implemented as a combination of multiple circuit elements configured to perform the processing.

In step S1010, the control unit 130 obtains the basis weight threshold table settings input from the setting screen 700 displayed on the operation panel 111. In one aspect, the basis weight threshold table settings input from the settings screen 700 may be regional information. In step S1020, the control unit 130 selects a basis weight threshold table to be used from among a plurality of basis weight threshold tables stored in the device in advance, based on the input contents on the setting screen 700. In step S1030, the control unit 130 sets the selected basis weight threshold table as a table used for determining the paper type. In step S1040, the control unit 130 starts feeding paper stored in the cassette 132 and printing on the paper based on a print command from a user's PC (Personal Computer) or the like.

In step S1050, the type of paper is determined based on the basis weight of the paper detected by the media detection sensor 125 and the basis weight threshold table set as a table used for determining the paper type in step S1030. In step S1060, the control unit 130 performs control for printing an image on paper, so-called toner image transfer, or fixing of a toner image onto paper, based on the determined paper type. In step S1070, the control unit 130 discharges the paper on which the printing process has been completed to the discharge tray 121.

FIG. 11 is a diagram illustrating an example of a procedure for setting a basis weight threshold table in the image forming apparatus 100 using the sensors 801 and 802 of the cassette 132. In one aspect, the control unit 130 may refer to a program for performing the process shown in FIG. 11 from the memory and execute the program. In other aspects, part or all of the processing may be implemented as a combination of circuit elements configured to perform the processing.

In steps S1110 and S1120, the control unit 130 acquires information from the sensors 801 and 802 of the cassette 132, and acquires information regarding the size of the sheets stored in the cassette 132. In step S1130, the control unit 130 selects a basis weight threshold table to be used based on information regarding the paper size. As an example, the control unit 130 may select either a paper basis weight threshold table that uses centimeters as a unit or a paper basis weight threshold table that uses inches as a unit. In step S1140, the control unit 130 sets the selected basis weight threshold table as a table used for determining the paper type. In step S1150, the control unit 130 starts feeding the paper stored in the cassette 132 and starts printing on the paper based on a print command from the user's PC or the like.

In step S1160, the type of paper is determined based on the basis weight of the paper detected by the media detection sensor 125 and the basis weight threshold table set as a table used for determining the paper type in step S1030. In step S1170, the control unit 130 performs control to print an image on the paper, so-called toner image transfer, fixing of the toner image onto the paper, etc. based on the paper type. In step S1180, the control unit 130 discharges the paper on which the printing process has been completed to the discharge tray 121.

As described above, since the image forming apparatus 100 according to the present embodiment includes a plurality of basis weight threshold tables, the user can determine the basis weight threshold of the image forming apparatus 100 even after the image forming apparatus 100 is shipped. The table can be selected or changed as appropriate. With this configuration, the image forming apparatus 100 can cope with a situation where paper distributed in one region is used in another region, for example, a situation where paper distributed in North America is used in Japan.

The embodiments disclosed this time should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims rather than the above description, and it is intended that all changes are included within the meaning and scope equivalent to the claims.

100 image forming apparatus, 110 original reading unit, 111 operation panel, 112 ADF, 113 IR unit, 114 scanner, 120 print engine, 121 output tray, 122 fixing unit, 123 transfer roller, 124 registration roller, 125 media detection sensor, 126 Conveyance roller, 127 Paper feed roller, 128 Intermediate transfer belt, 129 Imaging unit, 130 Control section, 131 Power supply section, 132 Cassette, 140 Paper feed cabinet section, 201 Optical sensor, 201A Sending side optical sensor, 201B Receiving side optical sensor, 301 Near-infrared LED, 302 Blue LED, 303 Reflector, 304 Green LED, 305 Photodiode, 310, 901, 902, 903, 904 Paper, 700 Setting screen, 801, 802 Sensor, 910 External device, 930 Network.

Claims (16)

a storage unit that stores a plurality of basis weight threshold information;
a settings acquisition unit that accepts changes to regional settings;
a basis weight acquisition unit that measures the basis weight of paper;
It is equipped with a control section,
Each of the plurality of basis weight threshold information is associated with each of the plurality of regions,
The control unit includes:
Based on the change in the regional settings, selecting basis weight threshold information to be used from among the plurality of basis weight threshold information,
correcting the basis weight threshold information based on at least one of a paper manufacturing error, a circuit error of the image forming apparatus, a measurement error of a basis weight acquisition unit, or aging deterioration of the image forming apparatus;
An image forming apparatus that determines the type of paper based on the basis weight of the paper measured by the basis weight acquisition unit and selected basis weight threshold information. a storage unit that stores a plurality of basis weight threshold information;
A cassette for storing paper,
a settings acquisition unit that accepts changes to regional settings;
a basis weight acquisition unit that measures the basis weight of paper;
It is equipped with a control section,
Each of the plurality of basis weight threshold information is associated with each of the plurality of regions,
The cassette includes a sensor that measures the width and depth of the paper,
The control unit includes:
Based on the detected value of the sensor, switching between basis weight threshold information for paper in centimeters and basis weight threshold information for paper in inches;
An image forming apparatus that determines the type of paper based on the basis weight of the paper measured by the basis weight acquisition unit and switched basis weight threshold information. a display that displays the plurality of regions;
further comprising a touch panel for selecting one of the plurality of regions,
The image forming apparatus according to claim 1, wherein the setting acquisition unit receives a change in the regional setting based on an input from the touch panel while the image forming apparatus is operating in a normal mode. Switching between basis weight threshold information for paper in centimeters and basis weight threshold information for paper in inches based on the detected value of the sensor,
Obtaining the regional settings for a region that uses inches or a region that uses centimeters based on the detected value of the sensor;
The image forming apparatus according to claim 2, further comprising switching between basis weight threshold information for paper in centimeters and basis weight threshold information for paper in inches based on the regional setting. Connected to external devices via a network,
The setting acquisition unit acquires information regarding the regional settings from the external device while the image forming apparatus is operating in a normal mode, and receives changes to the regional settings based on the information regarding the regional settings. Item 1. Image forming apparatus according to item 1. Each of the plurality of basis weight threshold information includes a plurality of basis weight ranges set for each paper type,
Determining the paper type includes determining the paper type based on which of the plurality of basis weight ranges the basis weight value measured by the basis weight acquisition unit falls within. , an image forming apparatus according to any one of claims 1 to 5 . The basis weight acquisition unit is
Includes transmitter and receiver optical sensors;
Obtain the light transmittance and reflectance of the paper,
The image forming apparatus according to any one of claims 1 to 6, wherein determining the paper type includes determining the paper type based on the light transmittance and the light reflectance . . storing a plurality of basis weight threshold information associated with each of the plurality of regions;
a step of accepting changes to regional settings;
selecting basis weight threshold information to be used from among the plurality of basis weight threshold information based on the change in the regional settings;
correcting the basis weight threshold information based on at least one of paper manufacturing errors, circuit errors of the image forming apparatus, basis weight measurement errors, and aging deterioration of the image forming apparatus;
Measuring the basis weight of the paper conveyed within the image forming apparatus;
A control method comprising: determining the type of paper based on the measured basis weight of the paper and the selected basis weight threshold information. storing a plurality of basis weight threshold information associated with each of the plurality of regions;
detecting the width and depth of paper stored in the cassette;
Based on the detected width and depth of the paper, switching between basis weight threshold information for paper in centimeters and basis weight threshold information for paper in inches;
Measuring the basis weight of paper conveyed within the image forming apparatus;
A control method comprising: determining the type of paper based on the measured basis weight of the paper and the switched basis weight threshold information. Displaying the plurality of regions on a display;
9. The control method according to claim 8, further comprising the step of accepting a change in the regional setting based on an input on a touch panel while the image forming apparatus is operating in a normal mode. The step of switching between basis weight threshold information for paper in centimeters and basis weight threshold information for paper in inches based on the detected width and depth of the paper,
obtaining a regional setting for a region using inches or a region using centimeters based on the detected paper width and depth;
10. The control method according to claim 9, further comprising the step of switching between basis weight threshold information for paper in centimeters and basis weight threshold information for paper in inches based on the regional setting. acquiring information regarding the regional settings from an external device connected to the image forming apparatus via a network while the image forming apparatus is operating in a normal mode;
The control method according to claim 8, further comprising: changing the regional settings based on information regarding the regional settings. Each of the plurality of basis weight threshold information includes a plurality of basis weight ranges set for each paper type,
The step of determining the paper type includes the step of determining the paper type based on which of the plurality of basis weight ranges the measured basis weight value falls within. 1. The control method according to any one of 2 . further comprising the step of obtaining the light transmittance and reflectance of the paper conveyed by the image forming apparatus using an optical sensor,
14. The control method according to claim 8 , wherein the step of determining the paper type includes determining the paper type based on the light transmittance and the light reflectance. A program that causes the image forming apparatus to execute the control method according to claim 8. A storage medium readable by the image forming apparatus, storing a program for causing the image forming apparatus to execute the control method according to any one of claims 8 to 14.

Images