Patent Application
20210171303
The present disclosure relates to a paper conveying technique.
Generally, for a scanner unit of a multifunction printer (hereinafter, MFP) for large-size paper, a sheet feed method, is frequently used, in which a document (paper) is fed to a fixed line sensor before being read in order to achieve a size reduction of a main body. Among documents read by a sheet-feed scanner, small documents are ejected into a document receiving tray, but large documents or long documents may go over the receiving tray and be dropped out of the scanner. Japanese Patent Application Publication No. 2005-72740 discloses an apparatus configured to stop a part of a read document in a state where the document held by a document ejection roller in accordance with a length of the document, in order to prevent the document from dropping out of the apparatus.
Under some circumstances, an apparatus having a document ejection roller may need to hold a document. However, when a document is partially held by the document ejection roller in order to prevent drop of the document, the holding state of the document by the document ejection roller has to be cancelled when a user collects the document. One method of cancelling the holding state of the document is to provide a document ejection key on an operation panel for the user to press the same. In this case, the user needs to operate the panel with one hand while holding the document with the other hand. In a case of a large document, when the holding state of the document is cancelled, the document may be bent by the weight thereof and may be scratched or creased depending upon how the document is held by the user. There is another method in which, a document in a holding state is pulled and is collected by rotating a conveying roller with the pulling force, however, in the case of a thin document, the document may be torn by the pulling force.
A paper conveying device disclosed herein may be used for a paper processing device. In a case where paper is a held for a paper conveying device configured to hold processed paper including read documents, the paper conveying device may utilize a technique disclosed herein capable of improving convenience of paper collection by a user after the paper is held by the paper conveying device.
According to an aspect of the present disclosure, a paper conveying device used in a paper processing device to perform predetermined processing on paper, the paper conveying device includes a conveying portion configured to convey, in a conveying direction, the paper to a processing portion of the paper processing device, a holding portion disposed downstream of the processing portion in the conveying direction and configured to hold the paper processed by the paper processing device, a detection portion configured to detect a change of an orientation of the paper held by the holding portion, and a control portion configured to release the paper held by the holding portion in a case where an amount of the detected orientation change reaches a predetermined amount.
The present disclosure can improve convenience of collecting paper by a user after the paper is held in a paper conveying device configured to hold processed paper including read documents.
Further features of the present disclosure will become apparent from the following description of exemplary embodiments with reference to the attached drawings.
An embodiment for implementing the present disclosure will be exemplarily described in detail with reference to the accompanying drawings. However, the dimensions, materials, shapes, and relative arrangements of components described in the embodiment may be optionally changed according to conditions and a configuration to which the disclosure is applied. In other words, the scope of the disclosure is not limited to the following embodiment.
In all examples, a sheet-feed scanner will be illustrated. The application of the present disclosure is not limited to such a scanner. The present disclosure is also applicable to other automatic paper conveying devices having similar configurations.
The scanner 100 includes a document inlet 101 and a document feed tray 102 at the front of the body. The leading end of a document is loaded on the document feed tray 102 such that the central portion of the document in the width direction of the document (X direction) is located at the center of the document inlet 101 in the width direction of the document, and then the document is inserted into the document inlet 101 so as to slide on the tray. The document inserted into the document inlet 101 on a conveying path in the scanner 100 is conveyed substantially in a horizontal direction (Y direction) that is a predetermined conveying direction orthogonal to the width direction of the document (X direction). The document inlet 101 is designed such that a certain degree of displacement or inclination of a document inserted by a user is acceptable with respect to the width of the document readable by the scanner 100. In
The scanner 100 is provided with an operation portion 103 including a physical key and an LCD panel on the top surface of the body, allowing a user to input the setting of reading conditions and a document size. On the top surface of the scanner 100, a top cover 104 is provided. The top cover 104 is opened upward to allow access into the scanner 100, so that maintenance can be performed on the body. At the rear of the scanner 100 (downstream in the conveying direction), a paper ejection guide (paper-ejection guide portion) 105 is attached. The paper ejection guide 105 is curled like a letter U, allowing a user, from the front of the body, to collect a document ejected from the rear. In other words, the paper ejection guide 105 guides an ejected document 401 such that the document bends upward and backward toward the upstream side of the conveying direction. The paper ejection guide 105 is detachable from the body of the scanner 100. In the case of a thick document that is hard to curl along the paper ejection guide 105, the paper ejection guide 105 is detached to allow the ejection of the document rearward from the scanner.
Specifically, in a typical usage pattern, the front side (user side) of the body or the front surface of the body of the scanner 100 is a side where a user faces the scanner 100 when operating the scanner 100. The document inlet 101 is opened at the front side of the body and the operation part 103 is oriented to the front side of the body so as to facilitate operations by a user who faces the front (near) side of the body or the front surface of the body of the scanner 100.
In the cross-sectional view of
Near the document inlet 101, a document sensor 107, which is a reflection optical sensor, is installed. The document sensor 107 emits light to the reading surface of a document inserted into the document inlet 101, thereby detecting the presence or absence of a document according to reflected light.
Behind the document sensor 107 (downstream of the conveying direction), a document conveying roller 108 and an upstream-side pinch roller 109 are disposed so as to nip a document. The document conveying roller 108 is connected to a conveying motor 208 (see
Line image sensors 110 are disposed downstream of the document conveying roller 108. A document retaining plate, which is not illustrated, is set to face the reading surface of the line image sensor 110 and presses a document onto the line image sensor 110 with a spring force. The scanner 100 of the present embodiment is provided with the five small line image sensors 110 arranged in X direction in order to read large documents.
Downstream of the line image sensors 110, a document ejection roller 111 and a downstream-side pinch roller 112 are disposed so as to nip a document. The document ejection roller 111 is connected to the document conveying roller 108 via a belt. A document is ejected to the document outlet 106 by the document ejection roller 111 and the downstream-side pinch roller 112 that are rotated by the rotation of the conveying motor 208. The document ejection roller 111 and the downstream-side pinch roller 112 of the present example act as a paper holding unit and a paper conveying unit of the present disclosure and correspond to a downstream-side conveying roller pair. The document conveying roller 108 and the upstream-side pinch roller 109 are included in the conveying portion of the present disclosure and correspond to an upstream-side conveying roller pair.
In other words, the document conveying roller 108 and the document ejection roller 111 are configured so as to receive a rotary force transmitted from the conveying motor 208 and rotate in an interlocked manner with a belt, which is not illustrated. The upstream-side pinch roller 109 and the downstream-side pinch roller 112 are pressed to the document conveying roller 108 and the document ejection roller 111 by an urging force of a spring (urging member), which is not illustrated, and form a nip portion for nipping and conveying a document. The upstream-side pinch roller 109 and the downstream-side pinch roller 112 are rotated by the rotations of the document conveying roller 108 and the document ejection roller 111 and are kept in a stopped state by the urging force when the document conveying roller 108 and the document ejection roller 111 are stopped. Various configurations may be used as the specific configurations of the conveying portion and the holding portion of the present disclosure as long as the conveying of paper and the holding of paper in a stop time are ensured. Thus, the present disclosure is not limited to the foregoing configuration.
At a central portion of the document outlet 106 (a central portion in the width direction of a document), a document state sensor 113 (hereinafter, may be referred to as “sensor 113”) is disposed as a detection portion. The sensor 113 is an optical range sensor including a light source for illuminating a measuring object (detection target) with detection light and a light receiving portion for receiving light reflected from the measuring object. A light receiving unit used in the light receiving portion has a two-dimensional light receiving surface and can measure a distance from an object such as a work piece by using an analog output value that changes according to the light receiving position of reflected light. In other words, the position of the optical axis of detection light received by the light receiving portion changes according to a distance between the light source and a detection target and an analog output value corresponding to the position of the optical axis is outputted as a detection result.
As illustrated in
As the light receiving portion of the sensor 113, the light receiving unit that changes the analog output value according to the reception position of reflected light is used in order to suppress the influence of an image on the accuracy of detection when the image is formed at the measurement position of a document. For example, by using a position sensitive detector (PSD), an output can be obtained according to the irradiation position of the optical axis of reflected light regardless of the intensity of the reflected light. Thus, when the state of a document changes, the influence of a change of an image state (e.g., an image concentration) on a measurement surface can be negligible.
Referring to
For reading the document 401, the document 401 is to be set on the scanner 100 in advance by a user. When the user inserts the document 401 into the document inlet 101, the document sensor 107 detects the document 401 and transmits a signal to the CPU 202. The CPU 202 transmits the control signal to the motor driver 206 and rotates the conveying motor 208, so that the document conveying roller 108 is rotated to draw the document 401 into the conveying path. When the document 401 reaches a reading starting position opposed to the image sensors 110, the rotation of the conveying motor 208 is stopped, so that the conveying is stopped. In this state, for example, the setting of reading is changed in response to an operation on the operation panel 103.
The scanner 100 waits for a press on the start key of the operation panel 103 while the document 401 is placed on standby for reading. In response to a press on the start key by a user, the scanner 100 starts a reading operation (S301). When the start key is pressed, the CPU 202 acquires the output of the sensor 113. The output of the sensor 113 is converted from an analog value to a digital value by the A/D conversion portion 209 on the controller board and is inputted to the CPU 202. The CPU 202 records, in the memory 205, the digitized output value as an output value in the absence of the document 401 at the document outlet 106 (S302). In other words, the absence of the document 401 in the detection range of the sensor 113 for detecting a change of the orientation of the document 401 is detected. Thus, a reference value is obtained for detecting a change of the orientation of the document 401 and the absence of the document 401 in the holding portion (nip portion) (that is, a state in which a conveying operation can be stopped). The CPU 202 then transmits the control signal to the motor driver 206 and rotates the conveying motor 208, so that the conveying of the document 401 is started (S303). The conveying of the document 401 is accelerated before the leading end of the document reaches the line image sensors 110, and the conveying speed is kept constant during a reading period.
The CPU 202 calculates the position of the document in the conveying direction based on the control signal to the motor driver 206. When the CPU 202 determines that the leading end of the document 401 has reached the line image sensors 110, a driving signal is transmitted to the line image sensors 110 and the AFE 207 and a reading operation of the document 401 is started (S304). Data outputted from the line image sensor 110 is converted into a digital value in the AFE 207 and then the digital value is inputted to the CPU 202. The CPU 202 performs processing for converting the data inputted from each of the line image sensors 110 into a segment of image data and stores the data in the memory 205. The stored image data is sequentially read from the outside through the IF portion 204.
In a reading period of the conveyed document 401, the rear end of the document 401 is detected by the document sensor 107 as paper rear-end detection (S305). The document 401 is continuously conveyed and the rear end of the document 401 passes through the detection area of the document sensor 107, so that the output signal of the document sensor 107 is changed and the CPU 202 detects the position of the rear end of the document 401. The CPU 202 determines, based on the detected position of the rear end, a position for terminating the reading operation of the document 401. When the document 401 reaches the position, the CPU 202 stops of the control signals of the line image sensors 110 and the AFE 207 and terminates the reading operation (S306). After the reading operation is terminated, the CPU 202 controls the driving of the conveying motor 208 so as to stop the rear end of the document 401 at a predetermined position (S307).
In a state in which the rotation of the conveying motor 208 is stopped, as illustrated in
The CPU 202 acquires the output of the sensor 113 in a state in which the conveying of the document 401 is stopped and the rotation of the document ejection roller 111 is locked (S309). In the state of
Subsequently, a threshold value for starting an ejecting operation (releasing operation) of the document 401 is generated by using the filtered detection signal and the detection signal acquired in the absence of the document 401 at the document outlet 106 before the start of a reading operation (S310). Upon the generation of the threshold value, the CPU 202 determines whether to set a higher value or a lower value than the output level (second detected distance) of the sensor 113 immediately after reading. Specifically, it is determined whether the orientation of the document 401 is (i) a separated orientation in which a part of the document 401 included in the detection range of the sensor 113 is located near the remotest position from the sensor 113 or (ii) a close orientation in which the part is located near the closest position to the sensor 113.
As illustrated in
V1 in
V2 indicates the output level of the sensor 113 immediately after the reading of the document.
In the presence of the document 401 in contact with the reflector plate 114 at the document outlet 106, the output of the sensor 113 has a value corresponding to a distance obtained by reducing the thickness of the document 401 from the distance to the reflector plate 114.
The CPU 202 compares a difference between the output V1 of the sensor 113 in the absence of the document and the output V2 of the sensor 113 in the presence of the document with a predetermined value. If the difference (absolute value as a magnitude of a number without regard to its sign or relation to other numbers) is smaller than the predetermined value, a threshold value for determining the ejection of the document 401 is obtained as a value lower than V2. In other words, the predetermined value is a reference value for determining whether the orientation of the document 401 is (i) the separated orientation or (ii) the close orientation. A value corresponding to, for example, the thickness or material of the document 401 and the configuration of the conveying path of the scanner can be experimentally determined in advance. If the absolute value of a difference between the output V1 (first detected distance) and the output V2 (second detected distance) is smaller than the reference value, (i) the separated orientation is determined as the orientation of the document and a threshold value (first threshold value) for a value smaller than V2 (a distance shorter than the second detected distance) is set. An approximate value (nearest reference value) is recorded in advance. The approximate value is obtained when the document 401 comes into contact with the opening 104a of the sensor 113 (the opening 104a is closed). An intermediate value between the approximate value and the value of V2 is set as an ejection-control start threshold value S1 (first threshold value) of the document 401. The intermediate value is set to have a certain margin from a state in which the document 401 is in contact with the opening 104a of the sensor 113. The setting is not particularly limited. Additionally, an intermediate value between V1 and V2 is determined and is set as a threshold value S2 (second threshold value) for stopping the ejection control of the document 401 when the document 401 is collected and is not left around the document outlet 106.
In another state of the document 401 immediately after reading, if the document 401 is thin or long, as illustrated in
If the document 401 can be brought close to or separated from the sensor 113 by a user operation depending upon the state of the document 401, both of the threshold values S1 and S1′ can be generated and set. The generation of the threshold values is not limited to the foregoing contents. Any other methods may be used as long as the orientation of the document 401 can be properly determined and the threshold values can be properly set.
After the completion of the generation of the threshold values, the threshold values generated by the CPU 202 and the output of the sensor 113 are periodically compared with each other and it is determined whether the output of the sensor 113 has reached any one of the threshold values S1, S1′, S2, and S2′ (S311). After the completion of the reading of the document 401, if the document 401 is not operated by a user, a distance between the sensor 113 and the document 401 is not changed and, thus, the output of the sensor 113 is kept constant and does not exceed the threshold values. If a user confirms the completion of the reading of the document 401 through the display on the operation panel 103, holds the right and left ends of the document 401 with both hands in order to collect the document 401, and gently pulls the document 401 toward the user, a distance between the sensor 113 and the document 401 is changed to vary the output of the sensor 113.
In the state of
After the reading of the document 401, if the document 401 is in contact with the opening 104a of the sensor 113 as illustrated in
If the output of the sensor 113 exceeds any one of the threshold values, the CPU 202 determines that an amount of change of the orientation of the document 401 has exceeded a predetermined amount, and performs an ejecting operation (control for restarting the rotation of the downstream-side conveying roller pair) for cancelling the retaining control of the document 401 and ejecting the document 401 (S312). In order to eject the document 401, the CPU 202 transmits the control signal to the motor driver 206 and rotates the conveying motor 208. In response to the rotation of the conveying motor 208, the document ejection roller 111 is rotated to eject the rear end of the held document 401 out of the document outlet 106. The user holding both ends of the document 401 with both hands can collect the document 401 without dropping or bending the document 401.
As illustrated in
The sensor 113 is preferably disposed at a location where a change of the orientation of the document 401 is limited to a certain range. That is to say, an upper limit and a lower limit are easily set and a portion susceptible to a displacement according to a change of the orientation of the document 401 can be detected. After image reading, the document 401 is held such that the document 401 has mostly passed through the document outlet 106 on the downstream side of the conveying direction and is partially left upstream of the document outlet 106 on the upstream side of the conveying direction. In a part where the document 401 is left upstream of the document outlet 106 in the conveying direction, the upstream end is fixed while being nipped by the document ejection roller 111 and the downstream-side pinch roller 112. Downstream of the fixed end in the conveying direction, the orientation of the held document 401 can be freely changed such as without meaningful restriction. In the downstream-side conveying path 120 where a change of the orientation of the document 401 is limited to the predetermined range, a part of the document 401 is stored such that flexibility in a change of the orientation of a portion fixed by the roller pair is different from that of a portion near the ejection space 126 in which the orientation is flexibly changed. Specifically, when a portion of the document 401 in the opened ejection space 126 is displaced by a user operation, a portion near the ejection space 126 is considerably displaced in the downstream-side conveying path 120 according to the displacement but a displacement of a portion near the fixed end is limited. Thus, the sensor 113 is placed near the ejection space 126, thereby detecting a change of the orientation of the document 401 with high sensitivity. However, the location of the sensor is not limited to the foregoing location as long as a change of the orientation of the document can be accurately detected when a user holds the document in order to remove the document.
The CPU 202 compares the output of the sensor 113 and the threshold value S2 in parallel with the ejecting operation of the document 401. When the document 401 is removed from the document outlet 106 by the ejecting operation of the document 401 and collection by a user, the document 401 is not present in the detection region of the sensor 113, so that a value upon detection of the reflector plate 114 is outputted. In this case, the output of the sensor is equal to V1 in the output tables of
According to the present example, a holding mechanism is automatically cancelled in response to a change of the state of a document, allowing a user to collect the document without operating a panel or the like. Specifically, when a large document is held so as not to fall out of the scanner due to the weight of the document, the document can be released without operating the panel. Thus, by collecting the document with both hands, damage caused by a drop or a bend of the document can be prevented.
The present example described the method of generating the threshold values based on the output of the sensor 113 when the document can be ejected. Predetermined fixed values may be used instead. For example, in the case of a configuration where a sheet type is determined and a distance between a sensor and a sheet is substantially kept constant in an ejection state, fixed threshold values can be used.
The present example described the configuration in which a sheet is held by energizing the conveying motor for rotating the ejection roller. A sheet may be held by another mechanism. For example, a sheet may be pressed by driving a spring retaining mechanism when the sheet can be ejected, or a sheet may be pressed by a suction pressure of a suction port provided on a conveying path. In other words, in addition to the conveying roller pair, a configuration only for the function of fixing, holding, and releasing a sheet, that is, a configuration separated from the conveying configuration may implement the holding portion of the present disclosure.
The present example described the configuration in which the read document 401 is guided toward the front of the scanner by the paper ejection guide 105. As illustrated in
The present example describes the configuration and control of a scanner. In the case of a multifunction printer (MFP) integrated with a printer, a printing operation may be performed by a printer unit concurrently with a reading operation of a document. In this case, vibrations caused by driving a carriage unit in the printer portion or vibrations caused by conveying the document 401 may affect a signal level detected by the state sensor 113. To address the issue, in the step of generating the threshold values, it is desirable or preferable to change an acquisition period for the output of the sensor 113 according to the period of vibrations caused by carriage or conveying in the printer portion and generate the threshold values including the range of fluctuations of the output, the fluctuations being caused by vibrations. In other words, the output of the sensor 113 is acquired several times during a predetermined detection period that is set based on the period of vibrations generated in the scanner. The threshold values are generated in consideration of the range of fluctuations. For example, in a method of setting a first threshold value, the mean value of the output of the sensor 113 may be used as the central value of a second detected distance (but is not limited thereto). Thus, the state of the document 401 is slightly changed by vibrations generated by the operation of the printer portion, thereby preventing the output of the sensor 113 from reaching the threshold value and causing a malfunction.
Processing for preventing the influence of vibrations caused by driving the printer portion may be performed during the determination of the output. In this case, in processing for comparing the output of the sensor 113 and the threshold value, if it is determined that a period during which the output of the sensor 113 reaches the threshold value is longer than the period of vibrations caused by driving the printer portion, the ejecting operation of the document is started. Specifically, the outputs of the sensor 113 are consecutively acquired in a period longer than the period of vibrations generated in the scanner. If the outputs are all kept at the threshold value, it is determined that an amount of change of the orientation of the document 401 has reached a predetermined amount. The period of vibrations generated in the scanner can be experimentally determined in advance.
Moreover, the state of the document 401 being ejected may be gradually changed by, for example, the weight of the document or the vibrations of the scanner. In this case, if the determination is continued with the threshold value generated by using the output of the sensor 113 immediately after reading, the output of the sensor may reach the threshold value before a user operates the document 401, so that document ejection control may be started. Thus, after the completion of reading of the document 401, the output of the sensor 113 may be acquired at regular cycles and a threshold value may be regenerated each time the output is acquired, that is, a distance between the sensor 113 and the document 401 may be redetected at predetermined cycles and the threshold value may be reset each time a distance is redetected. A user operation on the document makes a large amount of change in distance between the sensor 113 and the document 401 per unit time, so that a change by a user operation and a change without a user operation can be identified and the accuracy of determination can be improved.
The setting of the threshold value and the detection method are not limited as long as the held document can be released in response to a movement of the document by a user. In the foregoing example, the held document 401 is released by detecting a change of the orientation of the document 401 from a first orientation in contact with the lower edge of the document outlet 106 to a second orientation in contact with the upper edge of the document outlet 106 or vice versa. For example, the held document 401 may be released when a change from the first orientation to the second orientation and a change from the second orientation to the first orientation are repeated predetermined times.
The printer 300 includes a paper conveying mechanism for a roll sheet 402 serving as a recording material and performs printing (records an image) on the roll sheet 402 based on the print data received from the outside or the copy print data read from the document 401 by the scanner 100. The roll sheet 402 fed with a predetermined conveying speed by the paper conveying mechanism has a surface supported by a platen 320 on the opposite side from a print surface and is printed by a recording head 310 that reciprocates in X direction perpendicular to the conveying direction with respect to the print surface. The recording head 310 performs printing by ejecting ink liquid onto the print surface of the roll sheet 402 from a nozzle. A printed (recorded) part of the roll sheet 402 is cut to a predetermined length by a cutter 330 and is outputted as a printed material from a document outlet 340.
The apparatus configuration of the printer 300 is not limited to a configuration including a roll sheet used as a recording material. The recording material on which an image is recorded may be a cut sheet having a predetermined length.
The application of the paper conveying device of the present disclosure is not limited to the paper conveying mechanism of a scanner according to the present example. For example, the present disclosure is also applicable to the conveying mechanism (including conveying rollers 341 to 344 and driving systems such as motors for driving the rollers) of the roll sheet 402 of the printer 300. In this case, the printer 300 serving as an image recorder corresponds to the paper processing device of the present disclosure and a print portion (recording portion) including the recording head 310 corresponds to the processing portion of the present disclosure. In this case, a conveying roller pair similar to the document ejection roller 111 and the downstream-side pinch roller 112 is disposed downstream of a carter 330. Furthermore, a printed-matter state sensor similar to the document state sensor 113 is disposed between the conveying roller pair and the document outlet 340. The control configuration and the control method are also identical to those of the scanner 100. This configuration can hold an outputted printed matter without dropping, reduce damage caused by dropping, and improve convenience for users in the collection of printed matters.
The image recording method of an image recorder to which the present disclosure is applicable is not limited to ink jet recording. For example, the present disclosure is applicable to the scanner of a multifunction machine including a laser printer using an electrophotographic system and the present disclosure is applicable to the recording-material conveying mechanism of a laser printer.
Moreover, predetermined processing to be performed on paper is not limited to the reading of an image and the recording of an image. The predetermined processing may include, for example, after treatment such as heat treatment on a recorded image. In other words, the present disclosure is also applicable to a conveying mechanism for a recording material in heat treatment equipment for heat-treating a recorded image.
Embodiment(s) of the present disclosure can also be realized by a computer of a system or apparatus that reads out and executes computer executable instructions (e.g., one or more programs) recorded on a storage medium (which may also be referred to more fully as a ‘non-transitory computer-readable storage medium’) to perform the functions of one or more of the above-described embodiment(s) and/or that includes one or more circuits (e.g., application specific integrated circuit (ASIC)) for performing the functions of one or more of the above-described embodiment(s), and by a method performed by the computer of the system or apparatus by, for example, reading out and executing the computer executable instructions from the storage medium to perform the functions of one or more of the above-described embodiment(s) and/or controlling the one or more circuits to perform the functions of one or more of the above-described embodiment(s). The computer may include one or more processors (e.g., central processing unit (CPU), micro processing unit (MPU)) and may include a network of separate computers or separate processors to read out and execute the computer executable instructions. The computer executable instructions may be provided to the computer, for example, from a network or the storage medium. The storage medium may include, for example, one or more of a hard disk, a random-access memory (RAM), a read-only memory (ROM), a storage of distributed computing systems, an optical disk (such as a compact disc (CD), digital versatile disc (DVD), or Blu-ray Disc (BD)™), a flash memory device, a memory card, and the like.
While the present disclosure has been described with reference to exemplary embodiments, it is to be understood that the disclosure is not limited to the disclosed exemplary embodiments. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.
This application claims the benefit of Japanese Patent Application No. 2019-221953, filed on Dec. 9, 2019, which is hereby incorporated by reference herein in its entirety.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2019-221953 | Dec 2019 | JP | national |
