JP2010167613A - Information recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rewritable printer which can avoid collision of communication from a plurality of RFID tags to a reader/writer, correctly detect the number of the RFID tags, and easily determine whether or not a heat-sensitive recording medium from a second sheet onward among heat-sensitive recording mediums in the double feeding status is normally processed. <P>SOLUTION: A control part 9 determines whether or not a RFID tag Ma attached to a heat-sensitive recording medium M in the detection range is in the double feeding status based on the number of RFID tags Ma which have shifted from a ready status (a response able status) to a standby status (a communication holding status) concerning communication status in an intercommunication with a reader/writer 7. When determined that it is in the double feeding status, the number of the detected RFID tags (double feeding information) is recorded by a recording unit 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an information recording apparatus having a function of recording information such as an image by printing on a heat-sensitive recording medium capable of coloring and erasing thermoreversibly and a function of erasing the recorded information. is there.

  Recently, it is possible to reduce the amount of recording medium used by repeatedly performing a process of recording information such as an image on the surface of the same recording medium and a process of erasing the recorded information. As an information recording apparatus, a rewritable printer for recording information such as an image and erasing recorded information on a sheet-like thermosensitive recording medium that develops and decolors thermoreversibly has attracted attention. As a thermal recording medium used in this type of rewritable printer, data relating to the thermal recording medium, for example, whether or not information recorded on the thermal recording medium has been erased, and information to be recorded next on the erased thermal recording medium include: In order to be able to manage data such as information update history or the number of rewrites, what is considered is an RFID (Radio Frequency Identification) tag embedded or pasted in each thermal recording medium. A rewritable printer that can read or write data to or from an RFID tag by using a reader / writer provided in the rewritable printer with respect to such a thermal recording medium with an RFID tag is considered. (For example, refer to Patent Document 1). Note that the RFID tag is also referred to as a wireless IC tag, an IC tag, an RF tag, an electronic tag, or the like.

  In such a rewritable printer, there is a case where a so-called “double feeding” occurs in which cut sheet-like thermal recording media are conveyed in an overlapped state. Since the reader / writer and the RFID tag can communicate with each other in a non-contact manner, data can be read from the RFID tag attached to each of a plurality of thermal recording media within the detection range of the reader / writer in the double feed state. Alternatively, data is written, or data is read or written only to any one of the RFID tags. On the other hand, since only one thermal recording medium is actually subjected to the recording process or the erasing process in the recording unit or the erasing unit, when the recording process or the erasing process is performed in the double feed state, the surface of the thermal recording medium is actually There arises a problem that the information recorded in the above and the content of the data written in the RFID tag do not match.

  Therefore, the present invention relates to a general printer that irreversibly records information by printing information such as an image on a recording medium with an RFID tag. The corresponding identification) is supplied with electric power to the RFID tag by electromagnetic waves, the unique identification information (Unique ID) automatically transmitted from the RFID tag is read, and the number of unique identification information read by the reading unit is a specific number. There is a printer that detects the occurrence of double feed depending on whether or not it exceeds the limit (for example, see Patent Document 2). Japanese Patent Application Laid-Open No. 2004-228688 discloses a mode in which when the occurrence of double feeding is detected, the subsequent processing is interrupted or the recording medium in a double feeding state is forcibly discharged out of the printer.

JP 2006-150765 A JP 2008-65188 A

  However, as in the technique described in Patent Document 2 described above, an RFID tag that exists within the detection range of the reading unit unconditionally transmits unique identification information in response to power supply (reading request) from the reading unit. If the reader / writer tries to detect the unique identification information transmitted from each RFID tag at the same time in the multi-feed state, communication from each RFID tag to the reading unit causes a collision. There is a possibility that the unique identification information of all RFID tags cannot be accurately read by the reading unit. In addition, there may be a mode in which communication between the reading unit and the RFID tag is performed a plurality of times with a certain interval (temporal interval, positional interval). In this case, the reading unit is connected to the same RFID tag. A read request may be made. Therefore, when one RFID tag transmits the same unique identification information multiple times and the reading unit reads duplicate unique identification information, the number of readings (detection number) and the actual number of RFID tags are There is a possibility that it does not match and it cannot be properly determined whether or not it is a double feed state.

  Further, Patent Document 2 discloses a mode in which, when a double feed is detected in a printer that irreversibly records information such as an image on a recording medium, the subsequent processing is interrupted. If it is an aspect in which the subsequent processing is interrupted every time, there is a problem that the working efficiency is remarkably lowered. On the other hand, Patent Document 2 discloses a process for forcibly discharging a recording medium in a double feed state to the outside of the printer. However, in a general printer that irreversibly records information such as images on a recording medium. By forcibly ejecting the recording medium in the double feed state out of the printer, the recording medium that has not been subjected to the recording process, that is, ejected in a blank state, is transported again from the paper feed port into the printer. It is expected that the normal recording process will be performed. Therefore, in a printer that irreversibly prints information such as images on a recording medium, it is only necessary to forcibly eject the recording medium in a double-feed state to the outside of the printer when double-feed is detected. There is no motive to do.

  However, in a rewritable printer capable of thermally reversibly recording and erasing information such as images on a thermal recording medium, information such as images is displayed in advance on the surface of each thermal recording medium unless it is a new thermal recording medium. Therefore, when the thermal recording medium in the double feeding state is forcibly ejected outside the rewritable printer when double feeding is detected, the second and subsequent thermal recording media have been processed normally. Whether or not it is, that is, whether or not the information recorded by actually printing on the surface of the thermal recording medium matches the content of the data written on the RFID tag, instantly and easily The problem of not being able to occur can arise. Such a problem is a problem peculiar to a rewritable printer, and cannot occur in a general printer that irreversibly prints information on a recording medium. In order to determine whether or not the second and subsequent thermal recording media have been subjected to normal processing when the thermal recording medium in the double feed state is forcibly discharged out of the rewritable printer. Therefore, it is required to collate the information recorded on the surface of the thermal recording medium with the contents of the data written in the RFID tag. If the thermal recording medium in the double feed state is forcibly ejected after the erasing process by the erasing unit and before the recording process by the recording unit, the first of the ejected thermal recording media is used. Since the thermal recording medium of No. 1 has been erased, it can be easily understood that the normal recording process has not been performed. Is recorded in a visible state and whether or not it has been processed normally, that is, the information recorded on the surface of the thermal recording medium and the content of the data written on the RFID tag match. There arises a problem that it is not possible to easily grasp whether or not it is.

  In the first place, a rewritable printer capable of repeatedly performing the recording process and the erasing process on the same heat-sensitive recording medium will cause dirt such as oil from previous use to adhere to the heat-sensitive recording medium when reusing the heat-sensitive recording medium. Or when the liquid for cleaning dirt such as oil is not sufficiently dry, double feeding is likely to occur, and compared to a general printer that irreversibly prints on the recording medium. The frequency of occurrence is high. In addition, the above-described problems occur if the forced discharge is simply performed when double feeding occurs.

  From the above, it is possible to accurately grasp the occurrence of double feeding by performing the processing when double feeding occurs, and the second and subsequent thermal recording media among the thermal recording media in the double feeding state perform normal processing. It can be seen that whether or not it has been passed can be easily and appropriately grasped, which is a serious problem peculiar to a rewritable printer.

  The present invention has been made paying attention to such problems, and the main purpose is to avoid collision of communication from a plurality of RFID tags to a reader / writer and accurately detect the number of RFID tags. Thus, the second and subsequent thermal recording media in the double feeding state can be processed normally without causing a reduction in work efficiency and properly determining the double feeding state. It is an object of the present invention to provide a rewritable printer that can easily and appropriately determine whether the printer is a printer.

  That is, the information recording apparatus of the present invention records and records information such as images on a cut sheet-like heat-sensitive recording medium attached with one or a plurality of RFID tags and capable of thermoreversibly coloring and erasing. Erased information, which is arranged on the paper feed port side and erases information recorded on the thermal recording medium, and on the thermal recording medium arranged on the paper ejection port side, such as images A recording unit that displays and records the image by printing, a transport unit that transports the thermal recording medium from the paper feed port to the paper discharge port, and a reader that can read and write data to and from the RFID tag transported by the transport unit A writer and a control unit that controls the operation of each of these units (erase unit, recording unit, transport unit, reader / writer) are provided. In the information recording apparatus of the present invention, the reader / writer changes the communication status to the RFID tag within the detection range on the transport unit from the respondable status that can respond to a predetermined command from the reader / writer to the reader / writer. RFID tag detection, which is information about the number of RFID tags detected by the reader / writer, by sequentially changing to a communication hold status that temporarily holds communication with the reader / writer after responding, and the number of RFID tags whose communication status has been changed It is transmitted to the control unit as numerical information. Here, the “RFID tag detection number information” in the present invention is arbitrarily processed based on “information indicating the number of RFID tags detected by the reader / writer” or “number of RFID tags detected by the reader / writer”. "Information such as characters and symbols" or "Information such as characters and symbols indicating the number of RFID tags detected by the reader / writer, indicating the number of RFID tags whose status has been changed". It is a concept that also includes

  In the case of such an information recording apparatus, when there are a plurality of RFID tags within the detection range of the reader / writer on the transport unit, the reader / writer sequentially changes the RFID tag communication status from the response enable status to the communication hold status. As a result of the transition, it is possible to avoid a situation in which communication between a plurality of RFID tags and a reader / writer collides with each other, and the reader / writer automatically changes the communication status of the RFID tag from a response ready status to a communication pending status. Therefore, the same RFID tag does not respond to the reader / writer a plurality of times, and the reader / writer can accurately detect the number of RFID tags whose status has been changed. In addition, since one RFID tag is always attached to one thermal recording medium, the number of RFID tags based on the RFID tag detection number information matches the number of thermal recording media, but one thermal recording medium. When two or more RFID tags are attached to the medium in advance, the number obtained by dividing the number of RFID tags based on the number of detected RFID tags by the number of RFID tags attached to one thermal recording medium is thermal recording. It matches the number of media. Therefore, for example, when one RFID tag is attached to one thermal recording medium, if the number of RFID tags indicated by the RFID tag detection number information is 1, the control unit may perform normal operation control. If the number of RFID tags indicated by the RFID tag detection number information is two or more, the control unit may perform double feed process control when the thermal recording media are transported in an overlapping state.

  The information recording apparatus according to the present invention utilizes the fact that the number of RFID tags existing in the detection range on the transport unit can be accurately detected based on the number of RFID tags whose communication status has been changed. The RFID tag detection number information is transmitted to the control unit, and based on the RFID tag detection number information received from the reader / writer, the control unit determines whether the number of thermal recording media on the transport unit is one or more. In addition to determining, when it is determined that there are a plurality of thermal recording media within the detection range on the transport unit, information on the number of RFID tag detections is transmitted to the recording unit, and the recording unit transmits from the control unit Information on the number of detected RFID tags is displayed and recorded on a thermal recording medium by printing. Here, the “information about the RFID tag detection number information” means “information indicating the RFID tag detection number information itself” and “information such as characters and symbols arbitrarily processed based on the RFID tag detection number information”, All of these are included, such as “information such as characters and symbols indicating the double feed state based on the RFID tag detection number information”.

  Due to such a configuration, the user checks whether or not information related to the FID tag detection number information is displayed on the heat-sensitive recording medium discharged out of the information recording apparatus, thereby overlapping a plurality of heat-sensitive recording media. It is possible to easily grasp whether or not the sheet is being conveyed. Therefore, even when a thermal recording medium in which information such as images is recorded in a visible state in advance is reused, not only the first thermal recording medium but also the second and subsequent thermal recording media It is also possible to easily and appropriately determine whether or not the above has been subjected to normal processing. Moreover, the information recording apparatus of the present invention performs recording of information such as images and erasure of recorded information on a cut sheet-like heat-sensitive recording medium that can be thermally reversibly colored and erased. Even if information related to the number of detected RFID tags is recorded and recorded on the thermal recording medium when double feeding is detected, it can be reused by the information recording device, and RFID tag detection is performed in the next erasing process. Information about numerical information can be deleted. This is an effect that can be achieved because it is an information recording apparatus of the present invention capable of repeatedly performing a recording process and an erasing process. In a general printer that irreversibly prints information such as an image on a recording medium, When information related to RFID tag detection number information is printed and recorded on a recording medium, it is naturally impossible to delete information related to RFID tag detection number information with the printer. The recording medium on which information related to information is displayed and recorded by printing cannot be reused by the printer and is wasted. Furthermore, with the information recording apparatus of the present invention, it is not necessary to stop the subsequent processing each time a double feed is detected, and to discharge the thermal recording medium outside the information recording apparatus, leading to a reduction in work efficiency. Absent.

  In the information recording apparatus of the present invention, when the reader / writer determines that there are a plurality of thermal recording media within the detection range on the transport unit in the control unit, an image or the like to be originally recorded on the thermal recording medium It is configured to write the data related to the surface print image information, which is information, to all RFID tags within the detection range, and the recording unit sends the “information related to RFID tag detection number information” sent from the control unit to the RFID tag. “Surface print image information” based on the written data regarding the surface print image information is displayed and recorded on the first thermal recording medium. Here, “information such as images” is a concept including characters and symbols in addition to photographs, illustrations, and figures. Since the information recording apparatus of the present invention has such a configuration, even when a double feed is detected, all the heat-sensitive recording media in the double feed state are treated uniformly as not undergoing normal processing. Without displaying the surface print image information, which is information such as an image to be originally recorded, together with information about the RFID tag detection number information, and recording it on the first thermal recording medium, the first thermal recording medium The recording medium can be used as long as there is no major problem in use. On the second and subsequent thermal recording media, information on the number of detected RFID tags is recorded on the first thermal recording medium. Therefore, it can be treated as not having undergone normal processing. Here, the “first thermal recording medium” is a thermal recording medium that can be in direct contact with a recording head (thermal head or the like) that actually performs recording processing in the recording unit, and the relative position of the recording head in the recording unit. Means either the lowermost thermal recording medium or the uppermost thermal recording medium. The reader / writer is configured to uniformly write the data related to the surface print image information to all the RFID tags within the detection range. While it is possible to identify whether the sheets are overlapping, the number of the RFID tag of the first thermal recording medium among the RFID tags attached to each thermal recording medium is the transition from the ready status to the communication pending status. Is difficult to discriminate, and the RFID tag attached to the first thermal recording medium is surely provided with data relating to the surface print image information, in other words, writing data to the RFID tag corresponding to the surface print image information. By recording (writing), the first thermal recording medium was printed on the RFID tag attached to the thermal recording medium. A state capable of displaying the surface printing image information based on the data relating to the information, in order to be able to use a heat-sensitive recording medium of this first sheet as valid.

  In addition, when the control unit in the information recording apparatus of the present invention determines that there are a plurality of thermal recording media within the detection range on the transport unit, the RFID tag detection number information is displayed as an erasing unit, a recording unit, a transport unit, Even if the information is transmitted to an internal component of the information recording apparatus other than the reader / writer or an apparatus separate from the information recording apparatus, the user can easily grasp whether or not it is in the double feed state. . Note that examples of the internal components of the information recording apparatus other than the erasing unit, the recording unit, the transport unit, and the reader / writer include a display screen, a sound device, and a warning light. As an apparatus separate from the information recording apparatus, a computer connected to the information recording apparatus in a wired or wireless manner so as to be communicable is exemplified. Further, the “RFID tag detection number information” transmitted from the control unit to an internal component of the information recording device or a device separate from the information recording device is the “RFID tag detection number information” transmitted from the control unit to the recording unit. "Means the same.

  Furthermore, the information recording apparatus of the present invention is provided with a feed roller disposed opposite to a position where the transport unit sandwiches the thermal recording medium in the thickness direction on the downstream side of the reader / writer, and the transport unit is disposed on the transport unit. When it is determined that there are a plurality of thermal recording media within the detection range, the pressure of the feed roller to be applied to the thermal recording medium or the separation dimension between the feed rollers is commanded based on the number of detected RFID tags. As a result, the conveyance control according to the number of the thermal recording media can be performed, and the thermal recording medium in the double feeding state can be smoothly conveyed.

  In order to obtain a rewritable printer having a configuration in which jamming is unlikely to occur in the information recording apparatus even in the double feed state, the transport unit may transport the thermal recording medium while maintaining a constant transport posture.

  According to the information recording apparatus of the present invention, communication from a plurality of RFID tags to a reader / writer can be avoided and the number of RFID tags can be accurately detected by the reader / writer. This is equivalent to a so-called rewritable printer that can appropriately determine whether or not it is in a double-feed state based on the image quality, and has a higher frequency of occurrence of double-feed compared to a general print that is irreversibly printed on a recording medium. In the information recording apparatus of the present invention, the second and subsequent thermal recording media are normally processed among the thermal recording media in a multi-feed state without causing a decrease in work efficiency. The problem of easily and appropriately discriminating whether or not there is an operation specific to a rewritable printer, that is, for a heat-sensitive recording medium capable of color development and decolorization in a thermoreversible manner It can entirely solved by using the operation of performing the recording processing and information processing.

1 is an overall schematic diagram of a rewritable printer according to an embodiment of the present invention. FIG. 2 is a schematic plan view of a thermal recording medium in the same embodiment. FIG. 2 is a schematic side view of a thermosensitive recording medium in the same embodiment. FIG. 2 is a simplified diagram of the rewritable printer according to the embodiment. 6 is a flowchart showing processing steps of the rewritable printer according to the embodiment. 6 is a flowchart showing an anti-collision processing procedure of an RFID tag and a reader / writer in the rewritable printer according to the embodiment. 6 is a flowchart showing a part of a multifeed processing procedure in the rewritable printer according to the embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
A rewritable printer 1 (schematically shown in FIG. 1), which is an information recording apparatus according to the present embodiment, has an RFID tag Ma and has a recording layer Mb that can be thermally reversibly colored and decolored. For M, information such as an image is recorded on the recording layer Mb, and information such as an image recorded on the recording layer Mb is erased. In the present embodiment, “information such as images” is a concept that includes characters and symbols in addition to photographs, illustrations, and figures. In the following description, “information such as an image” may be referred to as “surface printed image information”.

  As shown in FIGS. 2 and 3 (FIGS. 2 and 3 are respectively a plan view and a side view schematically showing the thermal recording medium M), the thermal recording medium M is a base layer Mc as a base material. And a recording layer Mb, and a cut sheet-like laminate including the RFID tag Ma sandwiched between the base layer Mc and the recording layer Mb. The base layer Mc and the recording layer Mb are cut into a sheet size such as A3 or A4, for example. When the base layer Mc and the recording layer Mb are regarded as a sheet body, the thermal recording medium M includes the RFID tag Ma. It can be said that it is built in the seat body. In the present embodiment, one RFID tag Ma is attached to one thermal recording medium M.

  The recording layer Mb can, for example, use an electron donating color-forming compound and an electron-accepting compound, and can form a relatively colored state and a decolored state depending on the heating temperature and / or the cooling rate after heating. The main component is a resin base material and a low molecular weight organic substance dispersed in the resin base material, and a relatively colored state and a decolored state can be formed depending on the temperature.

  The RFID tag Ma includes an antenna made of, for example, a coiled conductive material and capable of communicating with the outside, and an IC chip connected to the antenna and having a unique identifier, and is in a non-contact state with a reader / writer described later via the antenna The data can be written to, read from, and rewritten to the IC chip (more specifically, the memory in the IC chip). The RFID tag Ma used in the present embodiment prevents a communication collision even when a plurality of RFID tags Ma are present simultaneously in a communicable area (detection range) of the reader / writer, which will be described later. And a function capable of appropriately communicating data, that is, an anti-collision function. In this embodiment, for example, an RFID tag Ma having a protocol (communication standard) compliant with ISO / IEC 18000-6 Type C is applied. In this standard, there are four areas in the memory in the RFID tag Ma, specifically, a user area bank in which information freely defined and used by the user is stored, and an IC chip specific number assigned by an IC chip manufacturer. Stored tag code bank, UII (Unique Item Identifier) code that is ID data unique to RFID tags, EPC (Electronic Product Code), and UII code bank that stores information related to PC (Protocol Control bits) A security bank is provided in which information related to security such as passwords is stored. The EPC stored in the UII code bank is a code used when product identification is performed using an RFID tag. Such an RFID tag Ma includes a ready state (corresponding to a “response possible status” in the present invention) that can communicate with the reader / writer 7, an arbitrate state that can receive at least a later Rep command from the reader / writer 7, and a reader / writer. 7. A Reply state in which a 16-bit random number (RN16), which will be described later, is responded to 7, an Acknowledged state in which the EPC and PC are read by the reader / writer 7, and a Standby state in which a Query Rep, which will be described later, is received from the reader / writer in the Acknowledged state. The communication status transitions with (corresponding to “communication pending status” in the present invention).

  As shown in FIGS. 1 and 4, the rewritable printer 1 includes a paper feed unit 2 having a paper feed port 21 and an image recorded on the recording layer Mb of the thermal recording medium M inserted from the paper feed port 21. An erasing unit 3 for erasing information, a recording unit 4 for recording information such as an image on the recording layer Mb of the thermal recording medium M that has passed through the erasing unit 3, and a thermal recording medium that has passed through the recording unit 4 And a paper discharge unit 5 having a discharge port 51 for discharging M to the outside.

  The paper feed unit 2 includes a paper feed tray 22 on which a plurality of thermal recording media M on which information such as images are recorded on the recording layer Mb can be stacked, and a thermal recording medium M placed on the paper feed tray 22. A sheet feeding feed roller 23 that feeds the sheets one by one toward the erasing unit 3 is provided. The erasing unit 3 includes an erasing head 31 that heats the recording layer Mb of the thermosensitive recording medium M, and an erasing platen roller 32 that is disposed to face the erasing head 31. The recording unit 4 includes a recording head 41 that heats the recording layer Mb of the thermal recording medium M, and a recording platen roller 42 that is disposed to face the recording head 41. In this embodiment, thermal heads are applied as the erasing head 31 and the recording head 41, respectively. The paper discharge unit 5 includes a discharge feed roller 52 that sends out the thermal recording medium M toward the discharge port 51. In the rewritable printer 1 of this embodiment, the recording unit 4 is disposed above the erasing unit 3, and the thermal recording medium M that has passed through the erasing unit 3 is conveyed to the recording unit 4 by the lift mechanism 6.

  The lift mechanism 6 includes a placement unit 61 on which the thermal recording medium M can be placed, and a lift unit 62 that moves the placement unit 61 up and down on the transport path between the erasing unit 3 and the recording unit 4. It is a thing. The mounting portion 61 has a tray shape in which a part or the whole is formed of metal, and the lowest lowered position (U) and the highest raised position (T) while maintaining a horizontal posture by a lift portion 62 including a link member 621 and the like. ) In the height direction.

  As shown in FIG. 4, the rewritable printer 1 according to this embodiment is a reader that reads and writes data to and from the RFID tag Ma of the thermal recording medium M between the erasing unit 3 and the recording unit 4. A writer 7 is provided. In this embodiment, the reader / writer 7 is fixed at a position lower than the placement surface 61a of the placement portion 61 positioned at the lowest lowered position (U) (see FIG. 1). The reader / writer 7 can appropriately communicate with the RFID tag Ma having the anti-collision function, and it can be said that the reader / writer 7 itself has the anti-collision function. In this embodiment, since the RFID tag Ma in the UHF band is applied, the reader / writer 7 also applies the one corresponding to the UHF band. Of course, if the RFID tag Ma is in the HF band, a reader / writer that can handle the HF band may be applied.

  Further, the rewritable printer 1 according to the present embodiment includes a paper feed roller 23 in the paper feed unit 2, an erase feed roller 81 provided on the upstream side of the erase unit 3, a lift mechanism 6, and an upstream of the recording unit 4. The conveyance unit 8 that conveys the thermal recording medium M from the paper supply port 21 to the paper discharge port 51 is configured by the recording feed roller 82 provided on the side and the paper discharge roller 52 in the paper discharge unit 5. ing. In the rewritable printer 1, the operation of the paper feed unit 2, the erasing unit 3, the recording unit 4, the paper discharge unit 5, the reader / writer 7, and the transport unit 8 is controlled by the control unit 9 (see FIGS. 6 and 7). ). Based on “RFID tag detection number information”, which will be described later, transmitted from the reader / writer 7, the controller 9 determines whether there is one thermal recording medium M within the detection range of the reader / writer 7 on the transport unit 8. It has the determination part 91 which determines (determines) whether it is a sheet (refer FIG. 7). The determination unit 91 determines that the thermal recording medium M is one if the RFID tag detection number (described later) included in the RFID tag detection number information is less than 2, that is, 1, while the RFID tag detection number is 2. If it is above, it will determine with the thermal recording medium M being a plurality of sheets. When the control unit 9 in the rewritable printer 1 according to this embodiment determines that the determination unit 91 has a plurality of thermal recording media M, that is, is in a multi-feed state, “information relating to RFID tag detection number information”. Is transmitted to the recording unit 4 and the transport unit 8.

  Next, the operation procedure, operation, and action of the rewritable printer 1 according to this embodiment will be described.

  First, the operation of the rewritable printer 1 from the feeding of the thermal recording medium M to the communication between the RFID tag Ma and the reader / writer 7 will be described. After the user sets the heat-sensitive recording medium M in which information such as an image is recorded on the recording layer Mb and is in a colored state on the paper feed tray 22 of the paper feed unit 2, the rewritable printer 1 controls the control unit in accordance with a predetermined operation by the user. 9 sends a paper feed start signal (operation start signal) to the paper feed unit 2 and transports the thermal recording medium M from the paper feed port 21 to the erasing unit 3 by the paper feed feed roller 23 (paper feed step S1, FIG. 5). The rewritable printer 1 stores, in a predetermined storage area in the control unit 9, data related to the surface print image information, which is information such as an image to be recorded on the thermal recording medium M input in advance by a user's predetermined operation. Yes. Then, the data related to the surface print image information at the time before the recording step S4, for example, the time of the paper feed step S1, in other words, the write data to the RFID tag Ma corresponding to the surface print image information is transferred to the reader / writer 7. ing. After the paper feeding step S1, the rewritable printer 1 presses and supports the thermal recording medium M conveyed to the erasing unit 3 with an erasing platen roller 32, heats the recording layer Mb with the erasing head 31, and gradually cools the recording. Information such as the image of the layer Mb is erased (erasing step S2). Subsequently, the heat-sensitive recording medium M in the erased state in which the information such as the image on the recording layer Mb is erased through the erasing step S2 is transported along the transport direction by the erasing feed roller 81, and reaches the lowest position (U). It is placed in a horizontal posture on the placed placement unit 61. Then, when the thermal recording medium M is placed on the placement unit 51 or at an appropriate time when the placement unit 61 is moved upward in a horizontal posture by the lift unit 62, the reader / writer 7 detects the RFID tag of the thermal recording medium M. Communication with Ma is performed (RFID tag communication step S3).

  Although the RFID tag Ma of the thermal recording medium M is closest to the reader / writer 7 when it is placed on the placement unit 61 positioned at the lowest position (U), even if it is an RFID tag Ma of the same frequency band. If the shape of the whole RFID tag, in other words, the shape of the inlet is different, the optimum communication distance with the reader / writer 7 is also different. In this embodiment, the placement unit 61 is moved in the height direction by the lift unit 62, In the process of changing the relative distance between the RFID tag Ma of the thermal recording medium M placed on the placement unit 61 and the reader / writer 7, an appropriate communication distance between the RFID tag Ma and the reader / writer 7 is detected and detected. The placement unit 61 can be temporarily stopped at the position to perform communication with the RFID tag Ma. The rewritable printer 1 according to the present embodiment allows the reader / writer 7 to contact and separate from the reader / writer 7 that is spaced apart in the vertical direction while holding the RFID tag Ma attached to the thermal recording medium M in a horizontal position. Communication is possible from the vertical direction to the RFID tag Ma.

  The rewritable printer 1 according to the present embodiment uses a thermal recording medium M attached with an RFID tag Ma having an anti-collision function as a processing object, and uses this anti-collision function in the RFID tag communication step S3. Thus, it is determined whether or not the thermal recording medium M is in a double feed state. A processing procedure related to anti-collision will be described with reference to FIG.

  First, the reader / writer 7 transmits a Select command for selecting a group (population) of RFID tags Ma to be read to the RFID tag Ma in the detection range (communication range) (step S31). When the RFID tag Ma enters the detection range of the reader / writer 7, it is activated by receiving a radio wave from the reader / writer 7 and is in a ready state.

The reader / writer 7 transmits a Query command including information on the number of slots necessary for the congestion control of the RFID tag Ma to the RFID tag Ma (step S32). Each RFID tag Ma that has received the Query command sets a random number of (0, 2 ^Q −1) in the slot counter by the slot count parameter Q (step S33). The RFID tag Ma shifts to the Arbitrate state when the set slot counter is non-zero (step S34; No), while identifying the RFID tag Ma itself when the slot counter is zero (step S34; Yes). The random number RN16 to be transmitted is transmitted (response) to the reader / writer 7, and a transition is made from the Ready state to the Reply state. Next, the reader / writer 7 sequentially transmits a QueryRep command to the RFID tag Ma, and decrements (subtracts) the slot counter (step S35). The RFID tag Ma in the Arbitrate state receives the QueryRep command transmitted from the reader / writer 7 and, if the slot counter is zero (step S36; Yes), transmits (responds) RN16 to the reader / writer 7, and in the Reply state. On the other hand, if the slot counter is not zero (step S36; No), the Arbitrate state, that is, the state where the next QueryRep command transmitted from the reader / writer 7 can be received is maintained.

  When the reader / writer 7 receives the RN 16 from the RFID tag Ma, that is, when there is a response from the RFID tag Ma, the reader / writer 7 transmits an Ack command including the RN 16 to the RFID tag Ma (step S37). Next, the RFID tag Ma that has received the Ack command from the reader / writer 7 transmits the above-described EPC and PC stored in the memory to the reader / writer 7 (step S38). When the RFID tag Ma receives the Ack command including the RN 16 transmitted by itself and transmits the EPC and the PC, the RFID tag Ma transitions from the Reply state to the Acknowledge state. Then, when the RFID tag Ma in the Acknowledge state receives the Query Rep command from the reader / writer 7, the state transitions from the Acknowledge state to the Standby state.

  With the above procedure, the reader / writer 7 sequentially changes the communication status (communication status) of each RFID tag Ma from the Ready status (response possible status) to the Standby status (communication pending status) for the RFID tag Ma within the detection range. Let The RFID tag Ma that once transmitted the EPC and PC to the reader / writer 7, in other words, the RFID tag Ma once read by the reader / writer 7 from the reader / writer 7 until the anti-collision process is completed. The communication status does not respond to the QueryRep command (Standby state, communication pending status).

  Steps S35 and subsequent steps are repeated until the reader / writer 7 reads out the EPCs and PCs of all RFID tags Ma existing within the detection range. At that time, the RFID tag Ma in the Standby state does not respond to the QueryRep command transmitted by the reader / writer 7, and other RFID tags Ma in the Arbitrate state or the Reply state can respond sequentially. Become.

  In the rewritable printer 1, if there is no response from the RFID tag Ma even if the procedure from step S35 is repeated a plurality of times, the anti-collision process is terminated with the event, and the reader / writer 7 finishes the anti-collision process. The number of EPCs and PCs acquired up to this point or the number of RNs 16, that is, the number of RFID tags Ma whose communication status has been changed, is read as “RFID tag detection number information” which is information related to the number of detected RFID tags Ma. And transmitted to the control unit 9 described above (see FIG. 7). In the present embodiment, the number of RFID tags Ma whose communication status is changed = the number of detected RFID tags Ma, and information indicating the number of detected RFID tags Ma itself is transmitted to the control unit 9 as “RFID tag detected number information”. Like to do. In the present embodiment, when the number of detected RFID tags Ma is “1”, the reader / writer 7 transmits an Ack command to the RFID tag Ma (step S37), and then permits writing from the RFID tag Ma. Is received, data related to information (surface print image information) to be recorded next on the erased recording layer Mb, that is, write data to the RFID tag Ma corresponding to the surface print image information is stored in the RFID tag Ma. Write. As data read / written between the RFID tag Ma and the reader / writer 7, in addition to the various information described above, whether or not information such as an image recorded in a visible state on the surface of the recording layer Mb has been deleted, For example, information about the thermal recording medium M attached with the RFID tag Ma or the RFID tag Ma itself, such as an update history of information and the number of rewrites.

  The control unit 9 that has received the RFID tag detection number information from the reader / writer 7 has the RFID tag detection number 2 (recorded) indicated by (recorded in) the RFID tag detection number information received from the reader / writer 7 in the determination unit 91. If it is less than that, it is determined that the thermal recording medium M is in a normal transport state in which the thermal recording medium M is transported in one sheet. If the number of detected RFID tags is 2 or more, there are a plurality of thermal recording media M. That is, it is determined that the state is a double feed state (double feed discrimination step S4). Subsequently, when the determination unit 91 determines that it is in the double feed state, the control unit 9 transmits “information regarding the RFID tag detection number information” to the recording unit 4 and the transport unit 8 (steps S4A and S4B). In the present embodiment, “multifeed information” that instructs to record the number of detected RFID tags on the thermal recording medium M that can be in direct contact with the recording head 41 is sent from the control unit 9 as “information about the number of detected RFID tags”. “Transport control information” for appropriately transporting the thermal recording medium M that is transmitted to the recording unit 4 and is in a double-feed state in the steps subsequent to the multi-feed determination step S4 based on the number of detected RFID tags is “RFID Information relating to tag detection number information ”is transmitted from the control unit 9 to the transport unit 8 (see FIG. 7). In the conveyance control information, a recording feed roller 82 disposed on the paper discharge outlet 51 side of the reader / writer 7 in the conveyance unit 8 according to the number of the thermal recording media M that is clarified based on the number of detected RFID tags. The distance between each other, the distance between the paper discharge feed rollers 52, and the pressure applied to the thermal recording medium M by each of the feed rollers 82 and 52 are determined based on appropriate values set in advance for each number of thermal recording media M. Values (hereinafter referred to as “conveyance control determination values”).

  In addition, when the control unit 9 determines that the determination unit 91 is in the double feed state, information such as an image that is originally recorded on the thermal recording medium M with respect to all detected RFID tags Ma (surface print image information). “Write information” for instructing to write the data is transmitted to the reader / writer 7 (step S4C). The reader / writer 7 that has received the write information from the control unit 9 writes data relating to the surface print image information to be recorded next on the thermal recording medium M to all the detected RFID tags Ma. At this time, the data related to the same surface print image information is written in all the RFID tags Ma existing within the detection range of the reader / writer 7.

  On the other hand, regardless of whether the thermal recording medium M is in a normal conveyance state or a double feeding state, the recording unit 4 is moved to the recording unit 4 by the recording feed roller 82 after the placement portion 61 reaches the highest position (T). The recording layer Mb is heated and rapidly cooled by the recording head 41 in a state of being conveyed and pressed and supported by the recording platen roller 42, whereby the recording layer Mb of the thermosensitive recording medium M has data relating to the surface print image information, that is, The surface print image information based on the write data to the RFID tag Ma corresponding to the surface print image information is recorded (recording step S5), and the heat-sensitive recording medium M is in a colored state in which the image is colored. When the recording unit 4 receives the above-described “multifeed information” from the control unit 9, that is, in the double feed state, the recording unit 4 has a first thermal recording medium M that can be in direct contact with the recording head 41. Based on the multifeed information, the number of detected RFID tags itself, that is, the number of thermal recording media M is recorded in a visible state.

  The heat-sensitive recording medium M that has undergone the recording step S5 is discharged from the paper discharge port 51 of the paper discharge unit 5 to the outside by the paper discharge feed roller 52 (discharge step S6). The discharged thermal recording medium M is stacked on a paper discharge tray (not shown) of the paper discharge unit 5. Further, when it is determined in the multifeed determination step S4 that the multifeed state is set and the transport unit 8 receives transport control information from the control unit 9 (step S4B), the transport unit 8 discharges paper more than the reader / writer 7. The positions of the recording feed roller 82 and the paper discharge feed roller 52 arranged on the side of the port 51 and the pressure applied to the thermal recording medium M are adjusted (changed) based on the conveyance control determination value included in the conveyance control information. The As a result, the thermal recording medium M in the double feed state is smoothly discharged from the discharge port 51 to the outside without causing a jam in the rewritable printer 1. If the RFID tag detection count indicated in the RFID tag detection count information is less than 2 and it is determined in the normal transport state in the double feed discrimination step S4, the recording unit 4 and the transport section 8 are controlled by the control section. 9, the normal operation state is maintained without receiving the above-described “multifeed information” and “conveyance control information”, and the thermal recording medium M passes through the recording step S4 and is discharged from the discharge port 51 in the discharge step S5. Is discharged.

  Therefore, when the thermal recording medium M is discharged, the surface recording image information is recorded on the thermal recording medium M processed in the normal conveyance state, while one of the thermal recording media M processed in the double feeding state. Since the number of detected RFID tags itself, that is, the number of thermal recording media M, is recorded on the first thermal recording medium M in addition to the surface print image information, the operator records the first thermal recording medium M on the first thermal recording medium M. By confirming the number of displayed thermal recording media M, it is possible to instantly and easily grasp the point of being ejected in a double feed state and the number of overlapping. Moreover, even the thermal recording medium M on which the number of the thermal recording media M is displayed together with the surface print image information can be used as long as it can be used in that state, and is erased again in the rewritable printer 1. It can be reused by going through the process.

  As described above, in the rewritable printer 1 according to the present embodiment, even when there are a plurality of RFID tags Ma within the detection range of the reader / writer 7, the reader / writer 7 displays the communication status of the RFID tag Ma. Standby state (communication hold status) in which communication with the reader / writer 7 is temporarily suspended after responding to the reader / writer 7 from the ready state (response possible status) in response to a predetermined command (Query command, QueryRep command) from By sequentially shifting to, communication between a plurality of RFID tags Ma and the reader / writer 7 can be avoided, and the same RFID tag Ma does not respond to the reader / writer 7 a plurality of times. RFID whose reader / writer 7 has changed the communication status Present in the detection range by sequentially detecting the number of grayed Ma can accurately grasp the number of RFID tags Ma. Then, the reader / writer 7 transmits the number of RFID tags Ma whose communication status has been changed = the number of RFID tag detections to the control unit 9 as RFID tag detection number information, which is indicated in the RFID tag detection number information. Appropriately discriminating whether the thermal recording medium M is in a normal transport state (one sheet) or a double feed state (two or more sheets) based on whether the number of detected RFID tags is two or more. Can do. Further, it is known from experience that the number of heat-sensitive recording media M that are overlapped is two or three even in the double feed state, and the number of RFID tags Ma existing within the detection range of the reader / writer 7. For example, since it is extremely rare that the number becomes 10 or more, the reader / writer 7 can instantaneously and collectively communicate with a plurality of RFID tags Ma existing within the detection range.

  In particular, when the control unit 9 determines that the determination unit 91 is in a double feed state, the multi-feed information is sent to the recording unit 4 (in this embodiment, information indicating the RFID tag detection number itself indicated by the RFID tag detection number information). The recording unit 4 is configured to record the number of detected RFID tags indicated in the received multifeed information on the thermal recording medium M, so that the thermal recording medium M is in a multifeed state after being discharged. It is possible to easily grasp whether or not it is through the visual sense without depending on the touch. Therefore, even when the thermal recording medium M in which information such as images is recorded in advance is reused, it is easily and appropriately determined whether or not the thermal recording medium M is processed in the double feed state. Can do. Moreover, the rewritable printer 1 according to the present embodiment records information such as an image and erases the recorded information on a heat-sensitive recording medium M that is thermally reversibly colorable and erasable. Therefore, even if information related to the number of detected RFID tags is recorded and recorded on the thermal recording medium M when double feeding is detected, it can be reused by the rewritable printer 1 and the next erasing process is performed. The information related to the number of detected RFID tags can be deleted. This is an effect that can be achieved because the rewritable printer 1 can repeatedly perform the recording process and the erasing process. In a general printer that irreversibly prints information such as an image on a recording medium, When information related to the RFID tag detection number information is displayed by printing and recorded, it is naturally impossible to delete the information related to the RFID tag detection number information with the printer. The recording medium recorded and displayed by printing cannot be reused by the printer and is wasted. Furthermore, with the rewritable printer 1 according to the present embodiment, it is not necessary to stop the subsequent processing and discharge the thermal recording medium M to the outside of the rewritable printer 1 each time double feed is detected, leading to a reduction in work efficiency. I don't have to.

  The rewritable printer 1 according to the present embodiment also detects data relating to the surface print image information when the control unit 9 determines that there are a plurality of thermal recording media M within the detection range on the transport unit 3. The reader / writer 7 is instructed to write to all the RFID tags Ma in the reader / writer 7, the reader / writer 7 writes data relating to the surface print image information to all the RFID tags Ma within the detection range, and the recording unit 4 “Information relating to RFID tag detection number information” transmitted from the control unit 9 and “surface print image information” based on data relating to surface print image information are displayed and recorded on the first thermal recording medium M. Therefore, even when double feeding is detected, all the thermal recording media M in the double feeding state are treated uniformly as not having undergone normal processing. The first thermal recording medium M can be used in that state as long as there is no problem in use, while the second and subsequent thermal recording media M are RFID tags as the first thermal recording medium. Since information related to the number-of-detection information is recorded, it can be handled as not having undergone normal processing. Note that the reader / writer 7 is configured to uniformly write data relating to the same surface print image information to all RFID tags within the detection range in response to a command from the control unit 9. While detecting, it is possible to specify how many thermal recording media M are overlapped, while the RFID tag of the first thermal recording medium M among the RFID tags Ma attached to the thermal recording media M is the number. It is difficult to determine whether the status changes to the communication pending status (Standby state), and data relating to the surface print image information, that is, the surface print image, is attached to the RFID tag Ma attached to the first thermal recording medium M. By reliably recording (writing) the write data to the RFID tag Ma corresponding to the information, the first thermal recording medium M can perform this thermal recording. It becomes possible to display and record “surface print image information” based on the data related to the surface print image information written on the RFID tag Ma attached to the body M, and this first thermal recording medium M is Display and use "surface print image information" based on the data related to the surface print image information written on the RFID tag Ma without being discarded or discharged out of the rewritable printer 1 in a substantially blank state. This is to make it possible.

  Further, when the control unit 9 determines that the determination unit 91 is in the double feed state, the control unit 9 transmits the conveyance control information to the conveyance unit 8 to the conveyance unit 8, and the discharge port 51 of the conveyance unit 8 is more than the reader / writer 7. On the side, the pressure of the recording feed roller 82, the discharge feed roller 52, the separation distance between the recording feed rollers 82, and the separation between the discharge feed rollers 52, which are opposed to each other at a position sandwiching the thermal recording medium M in the thickness direction. Since the dimensions are adjusted based on the conveyance control information, appropriate conveyance control according to the number of the thermal recording media M can be performed, and the thermal recording media M in the multi-feed state can be smoothly conveyed. can do. The rewritable printer 9 according to the present embodiment performs appropriate conveyance control according to the number of thermal recording media M even when the thermal recording medium M is in the double feeding state, and discharges paper as in the normal conveyance state. Since a plurality of thermal recording media M in a multi-feed state can be discharged from the port 51, when the multi-feed occurs, the operating state of the rewritable printer 1 is temporarily stopped and the thermal recording medium M is removed from the machine. Thus, it is not necessary to set the rewritable printer in the operating state again after it is forcibly taken out, and even if double feeding occurs, the processing speed of the entire rewritable printer is not reduced.

  Moreover, since the transport unit 8 in the rewritable printer 1 transports the thermal recording medium M from the paper feed port 21 to the paper discharge port 51 while maintaining a constant transport posture (specifically, a horizontal posture), Even when the thermal recording medium M is in a double feed state, jamming is unlikely to occur in the rewritable printer 1, and wasteful disposal of the thermal recording medium M can be prevented.

  In addition, this invention is not limited to embodiment mentioned above. For example, in the above-described embodiment, an example in which the reader / writer transmits “information indicating the number of RFID tags detected by the reader / writer” to the control unit as the “RFID tag detection number information” is illustrated. The “detected number information” may be “information such as characters and symbols arbitrarily processed based on the number of RFID tags detected by the reader / writer” or “the number of RFID tags whose status has been changed itself”. It may also be information such as characters and symbols indicating the number of RFID tags detected by the reader / writer.

  In addition, “information on RFID tag detection number information” (“multifeed information” and “transport control information” in the embodiment) is “information such as characters and symbols arbitrarily processed based on RFID tag detection number information” Or “information such as characters and symbols indicating the double feed state based on the RFID tag detection number information”. For example, when the recording unit receives “information such as characters and symbols indicating a double feed state based on the RFID tag detection number information” as “information about the RFID tag detection number information” from the control unit, Even if characters or symbols indicating that a double feed state is recorded on the thermal recording medium based on the “information on the number of detected RFID tags”, the user can easily grasp the occurrence of double feed.

  In addition, when the thermal recording medium that is a recording target is one in which a plurality of RFID tags are attached to one sheet, the number of detected RFID tags received from the reader / writer by the control unit, and the incident amount per one thermal recording medium It may be determined whether the number of the thermal recording medium is one or more by comparing with the number of the RFID tags.

  Further, the control unit transmits the RFID tag detection number information to an internal component of the rewritable printer other than the erasing unit, the recording unit, the transport unit, and the reader / writer, or a device separate from the rewritable printer. It doesn't matter. The internal components of a rewritable printer include a display screen, a sound device, and a warning light. When the control unit determines that it is in a double feed state, a message to that effect is displayed on the display screen. By generating an alarm sound by the device or blinking / lighting a warning light, the user can be easily informed of the occurrence of double feed. As an apparatus separate from the rewritable printer, a computer connected to the rewritable printer so as to be communicable by wire or wireless can be cited. Then, when the control unit determines that it is in the double feed state, a warning light may be flashed / lighted on the display screen of the computer, or an alarm sound is generated by the sound device.

  In addition, when the control unit determines that it is in the double feed state, only the information related to the RFID tag detection number information (double feed information) is recorded on the thermal recording medium by the recording unit, and the surface print image information is not recorded (display). It may be a rewritable printer.

  The position where the reader / writer is attached (reader / writer setting position) is not particularly limited as long as it is a position where data can be read and written with respect to the RFID tag attached to the thermal recording medium conveyed by the conveyance unit. You may arrange | position to the bottom face of the mounting part in embodiment. In this case, it is a condition that the distance between the RFID tag of the thermal recording medium placed on the placement unit and the reader / writer arranged on the bottom surface of the placement unit is an appropriate communication distance. Appropriate data communication between the reader / writer and the RFID tag can be performed at the time of placement on the placement unit. Further, a reader / writer may be attached at a position where data communication can be performed from above with respect to the thermal recording medium conveyed in a state maintained in a horizontal posture.

  Further, the erasing unit and the recording unit may be arranged side by side in the horizontal direction.

  As the thermal recording medium, a type in which an RFID tag is attached instead of the RFID tag built-in type may be applied.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

1 Information recording device (rewritable printer)
DESCRIPTION OF SYMBOLS 3 ... Erase unit 4 ... Recording unit 7 ... Reader / writer 8 ... Conveying part 9 ... Control part M ... Thermal recording medium Ma ... RFID tag

Claims (5)

An information recording apparatus for recording information such as images and erasing recorded information on a cut sheet-like heat-sensitive recording medium attached with an RFID tag and thermally reversibly colorable and erasable,
An erasing unit disposed on the paper feed port side for erasing information recorded on the thermal recording medium;
A recording unit that is disposed on the discharge port side and displays and records information on the thermal recording medium;
A transport unit for transporting the thermal recording medium from the paper feed port to the paper discharge port;
A reader / writer capable of reading and writing data with respect to the RFID tag attached to the thermal recording medium conveyed by the conveyance unit;
A controller for controlling the operation of the erasing unit, the recording unit, the transport unit, and the reader / writer,
After the reader / writer responds to the reader / writer from a response possible status that can respond to a predetermined command from the reader / writer with respect to the RFID tag within the detection range on the transport unit, The control is sequentially changed to a communication hold status for temporarily holding communication, and the number of RFID tags whose communication status has been changed is used as RFID tag detection number information that is information related to the number of RFID tags detected by the reader / writer. To send to the department,
The control unit determines whether the number of the thermal recording media within the detection range on the transport unit is one or more based on the RFID tag detection number information received from the reader / writer. And, when it is determined that there are a plurality of the thermal recording media within the detection range on the transport unit, information on the RFID tag detection number information is transmitted to the recording unit,
The information recording apparatus, wherein the recording unit displays and records information on the RFID tag detection number information transmitted from the control unit on the thermosensitive recording medium. When the reader / writer determines that the controller has a plurality of thermal recording media within the detection range on the transport unit, the surface is information such as an image to be originally recorded on the thermal recording medium. Data related to print image information is written to all RFID tags within the detection range.
The thermal recording of the first sheet of surface print image information is based on information on the RFID tag detection number information transmitted from the control unit and data on the surface print image information written on the RFID tag. The information recording apparatus according to claim 1, wherein the information recording apparatus displays and records on a medium.   When the control unit determines that there are a plurality of the thermal recording media within the detection range on the transport unit, information on the RFID tag detection number information is stored in the erase unit, the recording unit, the transport unit, The information recording apparatus according to claim 1, wherein the information recording apparatus is configured to transmit to an internal component of the information recording apparatus other than the reader / writer or an apparatus separate from the information recording apparatus.   The transport unit includes at least a feed roller disposed at a position sandwiching the thermosensitive recording medium in the thickness direction on the paper discharge port side with respect to the reader / writer, and the control unit has a detection range on the transport unit. Instructing the pressure of the feed roller to act on the thermal recording medium or the separation distance between the feed rollers based on the RFID tag detection number information when it is determined that there are a plurality of thermal recording media The information recording apparatus according to any one of claims 1 to 3. The information recording apparatus according to claim 1, wherein the transport unit transports the thermosensitive recording medium in a state of maintaining a constant transport posture.

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