JP6130198B2 - Paper information reading method of printing press - Google Patents

Description

  The present invention relates to a paper information reading method for a printing press suitable for use when reading paper information by a predetermined ID tag reading means from an ID tag attached to a recording paper roll set in the printing press.

  In general, a printing unit that integrally includes a scanner unit that obtains image data by scanning an A4 size or other printing document, and that prints the obtained image data on a large size recording sheet such as an A1 size. For example, a recording apparatus disclosed in Patent Document 1 is known. In this recording apparatus, roll-type recording paper (thermal paper) is used, and printing is performed by a plurality of print heads (thermal heads). By the way, when using thermal paper, the printing state such as the color development state depends on the type of thermal paper. Therefore, to ensure (optimize) the print quality, at least the paper information including the type of thermal paper to be used is required. It is desirable to set the operating characteristics on the printing press side so as to be acquired in advance and to match the paper information.

  Conventionally, a printing machine using such paper information is also known. Patent Document 2 is used for print processing, recording paper roll remaining amount prediction, recording paper quality degradation analysis, and the like. A roll printer for the purpose of easily adding / updating recording paper management information to a recording paper roll. As a specific configuration, the recording paper roll core, recording date and time, and sensitivity information Are provided with an IC tag for storing recording paper management information including the like, and the printer is provided with an access unit for accessing the IC tag and reading and writing the recording paper management information. Reads the recording paper management information stored in the IC tag through the access unit to optimize the print conditions, and the access unit reads the recording start date of the recording paper roll in the IC tag. , The recording sheet remaining amount, roll printer which is adapted to append and update the environmental information (temperature and humidity in the printer) is disclosed.

JP-A-9-164725 JP-A-2005-219406

  However, the conventional roll printer (printing machine) disclosed in Patent Document 2 described above has the following problems.

  First, since the IC tag (ID tag) is attached to the peripheral surface (inner peripheral surface) of the core of the recording paper roll, when the recording paper roll is set in the printer, the ID tag and the ID tag The distances and angles between the access units that perform reading vary. Therefore, a reading error may occur depending on the sensitivity of the access unit, which is not necessarily sufficient from the viewpoint of accurately and surely reading the recording paper management information, and is difficult in reliability and stability.

  Second, since it is necessary to consider that the ID tag can be detected even at the most distant position, the sensitivity of the access unit needs to be increased to some extent. Therefore, the access unit is increased in size and cost, and there is a difficulty from the viewpoint of improving power saving. From the viewpoint of reading the recording paper management information, countermeasures such as increasing the sensitivity of the access unit can be considered, but reliability and stability are ensured, such as being susceptible to disturbance (noise), and recording paper management From the viewpoint of reading information accurately and reliably, it is difficult and cannot be employed.

  An object of the present invention is to provide a paper information reading method for a printing press that solves the problems existing in the background art.

  In order to solve the above-described problem, the paper information reading method of the printing press according to the present invention obtains the paper information INp from the ID tag 3 attached to the recording paper roll Rp set in the printing press 1 by the predetermined ID tag reading means 4. When reading, the recording paper roll Rp set on the printing press 1 is rotated from the set position in the forward direction Ff for feeding out the recording paper Pr, and the ID tag reading means 4 detects the presence or absence of the ID tag 3 when rotated. If the ID tag detection process is performed and the ID tag 3 is detected, a stop control process for stopping the rotation of the recording paper roll Rp is performed, and the paper recorded on the ID tag 3 by the ID tag reading unit 4 after the rotation stops. A paper information reading process for reading the information INp is performed, and then a return control process for returning to the set position by rotating the recording paper roll Rp in the reverse direction Fr is performed. To.

  In this case, according to a preferred aspect of the invention, the ID tag 3 can be attached to the peripheral surface of the core tube portion Rps in the recording paper roll Rp, and the ID tag 3 can include at least the RFID tag 3r. it can. In the ID tag detection process, the ID tag reader 4 can detect the presence or absence of the ID tag 3 using a polling method. Further, when performing the ID tag detection process, the rotation amount of the recording paper roll Rp that can be determined to have no ID tag 3 is set as a maximum setting value in advance, and the ID tag 3 is removed even if the rotation amount reaches the maximum setting value. When it is not detected, predetermined error processing can be performed. On the other hand, in the stop control process, if the ID tag 3 is detected, the control for stopping the rotation by slowing down is performed, and then the control is performed by rotating in the reverse direction by a preset rotation amount and stopping again.

  According to the paper information reading method of the printing press according to the present invention by such a method, the following remarkable effects are obtained.

  (1) When the recording paper roll Rp is set in the printing press 1, even if the distance and angle between the ID tag 3 and the ID tag reading means 4 vary, the regularity that always keeps the ID tag 3 to be the shortest. The paper information INp can be read at the position. Therefore, it is possible to eliminate reading errors, read the paper information INp accurately and reliably, and ensure sufficient reliability and stability.

  (2) Since detection is always possible at the shortest distance with respect to the ID tag 3, the performance of the ID tag reading means 4 is sufficient with minimum sensitivity. Therefore, it is possible to contribute to size reduction and cost reduction of the ID tag reading means 4 using a reader / writer unit or the like, and also to improve power saving performance.

  (3) According to a preferred embodiment, when the ID tag 3 attached to the peripheral surface of the core tube portion Rps in the recording paper roll Rp is applied as the ID tag 3, the position of the ID tag 3 is random when the recording paper roll Rp is loaded. As a result, the effects of the paper information reading method according to the present invention can be effectively secured, and the maximum performance can be obtained from this viewpoint.

  (4) According to a preferred embodiment, if at least the RFID tag 3r is included in the ID tag 3, it is possible to detect within a certain range by a non-contact method, and therefore the operation based on the paper information reading method according to the present invention. The effect can be ensured effectively and can be implemented as the most desirable mode.

  (5) According to a preferred embodiment, if the ID tag detection process for detecting the presence or absence of the ID tag 3 is performed by the ID tag reading means 4 using a polling method, the ID tag detection process is reliably performed by relatively simple control. Can be done.

  (6) According to a preferred embodiment, when performing the ID tag detection process, the rotation amount of the recording paper roll Rp that can be determined to have no ID tag 3 is set as the maximum setting value in advance, and the rotation amount reaches the maximum setting value. If the ID tag 3 is not detected, if a predetermined error process is performed, unnecessary rotation of the recording paper roll Rp can be avoided, and an error such as the absence of the ID tag 3 is promptly notified to the operator. be able to.

  (7) According to a preferred embodiment, as a stop control process, if the ID tag 3 is detected, a control for stopping the rotation by slowing down is performed, and then the control is performed by rotating in the reverse direction by a preset rotation amount and stopping again. By doing so, the ID tag 3 can be reliably and stably stopped at the regular stop position without adversely affecting the state of the recording paper Pr even if it is a large recording paper Pr.

The flowchart for demonstrating the paper information reading method of the printing press which concerns on suitable embodiment of this invention, A flowchart for explaining the entire print processing procedure including the paper information reading method; An external perspective view of a printing press capable of carrying out the paper information reading method; The perspective view which shows only the principal part in the internal structure of the state which opened the cabinet of the printing machine, The perspective view which shows the core pipe part of the recording paper roll used for the paper information reading method, A list showing an example of record information of the RFID tag attached to the concentric tube part, Principle configuration diagram schematically showing the structure of the main part of the printing press, Schematic configuration diagram showing a modification example of the ID tag reading means provided in the printing machine,

  Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.

  First, the configuration of the printing machine 1 that can implement the paper information reading method according to the present embodiment will be described with reference to FIGS.

  As shown in FIGS. 3 and 4, the printing machine 1 includes a cabinet 21 that covers the whole, and the cabinet 21 includes a lower body cabinet portion 22 and an upper cover cabinet portion 23. The cover cabinet portion 23 can be opened and closed by a rear hinge portion (not shown) with respect to the main body cabinet portion 22. FIG. 3 shows the closed state of the cover cabinet portion 23, and FIG. 4 shows the open state in which the front portion of the cover cabinet portion 23 is pivotally displaced upward by about 90 ° with respect to the main body cabinet portion 22. .

  As shown in FIG. 3, the cover cabinet portion 23 is integrally provided with the scanner portion 2 at a substantially central position of the upper surface 23 u. In the scanner unit 2, reference numeral 25 denotes a document supply tray unit for setting the printing document Ps, and 26 denotes a document discharge tray unit for receiving the printed document Ps after scanning. In FIG. 3, an operation unit 27 is disposed at the right side of the scanner unit 2. The illustrated operation unit 27 includes a touch panel display 27t. Accordingly, the display 27t functions as a display unit for displaying various information on the screen, and as a setting unit (input unit) for performing various settings by touching an input key displayed on the screen. Function.

  The scanner unit 2 has a known scanner function. Accordingly, when the printing document Ps is set on the document supply tray unit 25 and the start key displayed on the operation unit 27 is touched (ON), the printing document Ps is conveyed forward and scanned by the image sensor. The printed original Ps after scanning is discharged onto the original discharge tray portion 26. Further, image data Dv is obtained by scanning by the image sensor, and the image data Dv is output from the scanner unit 2. In FIG. 3, Ps indicated by an imaginary line indicates a printing document being scanned by the scanner unit 2.

  On the other hand, as shown in FIGS. 4 and 7, a recording paper loading mechanism 31 for loading the recording paper roll Rp shown in FIG. In this case, the recording paper roll Rp is a roll type recording paper in which a continuous long recording paper Pr is wound around the outer peripheral surface of an elongated cylindrical core tube portion Rps arranged in the center. As the recording paper Pr, various kinds of recording paper can be applied including different types of color thermal paper including normal thermal paper, coated thermal paper, film-based thermal paper, transfer paper, long-term storage thermal paper, and the like.

  Further, as shown in FIG. 5, a sheet-like ID tag 3 is attached to one end of the outer peripheral surface of the core tube portion Rps. As the ID tag 3, an RFID tag 3r incorporating an IC chip and an antenna is used. The RFID tag 3r can be detected within a certain range by a non-contact method if a reader / writer unit 51 described later is used. Accordingly, it is possible to effectively ensure the operational effects based on the paper information reading method according to the present embodiment, such as being able to easily and surely read only the paper information INp recorded on the RFID tag 3r, and it can be implemented as the most desirable form. In addition, the present embodiment solves the problem that if the RFID tag 3r is attached to the outer peripheral surface of the core tube portion Rps of the recording paper roll Rp, the position of the RFID tag 3r randomly varies when the recording paper roll Rp is loaded. Thus, it is possible to effectively ensure the effects based on the paper information reading method according to the above and obtain the maximum performance from this viewpoint. Various paper information INp shown in a list in FIG. 6 is recorded in the illustrated RFID tag 3r. In addition, as a use band frequency, HF band, UHF band, and other frequency bands can be used, and in particular, the HF band has a detectable distance (communication distance) of about 10 [cm]. It is suitable for use in the layout structure of such a printing press. As the ID tag 3, it is desirable to use a highly versatile RFID tag 3r, but this does not exclude other ID tags. For example, a bar code or the like attached to the exposed core tube portion Rps may be used. In the case of a bar code, it can be detected by a reflective optical sensor.

  On the other hand, the recording paper loading mechanism 31 is arranged on the left and right, and has a core tube support portion 32 s having a core tube receiving portion 32 s notched in a U shape from the upper end side, and rotates to the core tube support portion 32. A core tube rotation drive mechanism 33 (see FIG. 7) is provided for rotating the core tube portion Rps of the recording paper roll Rp supported freely in the forward direction (paper feeding direction) Ff or the reverse direction (paper rewinding direction) Fr. The core tube rotation drive mechanism 33 is positioned coaxially with the core tube portion Rps and engages (locks) with one end of the core tube portion Rps, and the core tube engagement gear portion 34. A core tube rotation transmission mechanism 35 that rotates the combined gear unit 34 and a rotation drive unit 36 that rotates and inputs to the core tube rotation transmission mechanism 35 are provided.

  On the other hand, as shown in FIG. 4, a reader / writer unit 51 having a reader function and a writer function is attached to the rear surface inside the main body cabinet section 22. The reader / writer unit 51 constitutes a predetermined ID tag reading means 4 that reads the paper information INp from the RFID tag 3r attached to the core tube portion Rps of the recording paper roll Rp loaded in the core tube support portion 32. Therefore, the attachment position in the left-right direction of the reader / writer unit 51 is made to coincide with the position in the left-right direction of the RFID tag 3r attached to the core tube portion Rps.

  Further, a recording paper feed mechanism 38 is provided near the front part inside the main body cabinet section 22. The recording paper feed mechanism 38 includes a feed roller 39 that is rotatably supported, and a feed roller rotation drive mechanism 40 that rotates the feed roller 39 in the forward direction (paper feeding direction) or the reverse direction (paper rewinding direction). In this case, the feed roller rotation drive mechanism 40 includes a rotation drive unit 36 that rotates the feed roller 39. Therefore, the rotation drive unit 36 is shared by both the core tube rotation drive mechanism 33 and the feed roller rotation drive mechanism 40. Therefore, necessary transmission switching can be performed by interposing a one-way clutch or the like in each transmission system. The illustrated rotation drive unit 36 includes a drive motor 52, a common drive gear 53, and a rotation transmission mechanism 54 that transmits the rotation of the drive motor 52 to the common drive gear 53.

  Further, as shown in FIGS. 4 and 7, the thermal head 11 is disposed at the front position on the inner surface of the cover cabinet portion 23. The illustrated thermal head 11 is configured by a combination of four head portions 11a, 11b, 11c, and 11d along the left-right direction, and each head portion 11a... Shares printing of a quarter region in the line direction. Each head portion 11a is configured by arranging a large number of heat generating elements in the line direction, and a dot (point) printed on one heat generating element becomes one color dot. Each of the illustrated head portions 11a... Is alternately different in the front-rear direction position, the two head portions 11a, 11c are arranged at the rear in the transport direction, and the other two head portions 11b, 11d are in front of the transport direction. It is arranged closer.

  In FIG. 7, reference numeral 42 denotes a guide roller arranged in the conveyance path of the recording paper Pr to guide the recording paper Pr, 43 denotes a cutting unit for cutting the recording paper Pr, and 44 discharges the printed recording paper Pr to the outside. , 55 denotes a recording paper presence / absence detection sensor that detects the presence / absence of the recording paper Pr, and 56 denotes a recording paper leading edge detection sensor that detects the leading edge of the recording paper Pr.

  On the other hand, the printing press 1 incorporates a printing press controller 61 shown in FIG. The printing press controller 61 has a computer function including a CPU and the like, and a function for controlling the entire printing press 1. The printing machine controller 61 includes an internal memory unit 61m. The internal memory unit 61m has a program area 61mp that stores programs for executing various controls and various processes, and a data area in which various data are written. 61 md. In particular, the program includes a sequence program for executing the paper information reading method according to the present embodiment. In addition, the scanner unit 2 and the operation unit 27 described above are connected to the printing press controller 61, and the thermal head 11, the cutting unit 43, the recording sheet presence / absence detection sensor 55, and the recording sheet leading edge detection sensor 56 are respectively connected.

  Next, functions and usage methods of the entire printing press 1 including the paper information reading method according to the present embodiment will be described according to the flowcharts shown in FIGS. 1 and 2 with reference to the drawings.

  When using the printing press 1, as shown in FIG. 2, first, the setting process of the recording paper roll Rp is performed. In this case, as shown in FIG. 4, the cover cabinet portion 23 is opened, and the recording paper roll Rp is loaded into the recording paper loading mechanism 31 inside the main body cabinet portion 22 (step S1). At this time, both ends of the core tube portion Rps in the recording paper roll Rp are accommodated in a pair of left and right core tube receiving portions 32s. As a result, both ends of the core tube portion Rps are rotatably supported by the core tube receiving portions 32s, and at the same time, one end of the core tube portion Rps is engaged (engaged) on the axis of the core tube engaging gear portion 34. Stop). Then, the front end side of the recording paper Pr in the recording paper roll Rp is pulled out and placed on the feed roller 39. Further, after the front end side is guided to the discharge port 44, the cover cabinet portion 23 is closed, and then an unillustrated interface is shown. While the lock switch is turned on, the recording paper presence / absence detection sensor 55 is turned on, and paper information reading processing based on the paper information reading method according to the present embodiment is performed (step S2). This paper information reading process is set as a paper information reading mode and is automatically executed.

  Next, the paper information reading process (step S2) will be specifically described mainly with reference to the flowchart shown in FIG.

  With the start of the paper information reading mode, the RFID tag 3r is detected. In this case, the position of the RFID tag 3r is unknown only by loading the recording paper roll Rp, and the RFID tag 3r may not be read depending on the readable range (sensitivity) of the reader / writer unit 51. The process of detecting the presence / absence of the RFID tag 3r is performed by performing the rotating operation. First, the drive motor 52 is driven and controlled, and the recording paper roll Rp is rotated in the forward direction (paper feeding direction) Ff from the set position, that is, the loading position (step S21). As a result, the RFID tag 3r is also turned and displaced according to the rotation of the core tube portion Rps. On the other hand, the reader / writer unit 51 monitors (detects) the presence or absence of the RFID tag 3r by polling processing (steps S22 and S23). As described above, if the ID tag detection process for detecting the presence or absence of the RFID tag 3r is performed using the polling method, the ID tag detection process can be reliably performed by relatively simple control.

  Then, if the reader / writer unit 51 detects the RFID tag 3r, a rotation stop process is performed on the drive motor 52 (step S24). In the rotation stop process, the rotation is stopped according to the following processing procedure. That is, when the RFID tag 3r is detected, the rotation of the drive motor 52 is stopped by slowing down. As a result, since the vehicle stops at a position slightly beyond the normal stop position, if it stops, the drive motor 52 is controlled to rotate backward at a low speed, and is returned to the set distance and stopped again. This set distance is set to a distance for returning to the normal stop position. As described above, as the stop control process, if the RFID tag 3r is detected, the control is performed to stop the rotation by slowing down, and then the control is performed by rotating the rotation in the reverse direction by a preset rotation amount and stopping again. For example, even if the recording paper Pr is large, the RFID tag 3r can be reliably and stably stopped at the regular stop position without adversely affecting the state of the recording paper Pr. In addition, if it stops at the regular position, the reader / writer unit 51 reads the paper information INp recorded on the RFID tag 3r (step S25). Data relating to the read paper information INp is written in the data area 61 md of the internal memory unit 61 m in the printing press controller 61. This completes the paper information reading process.

  By the way, when the paper information reading mode is executed, the RFID tag 3r may not be detected. For example, the RFID tag 3r is not detected when the RFID tag 3r is not attached to the recording paper roll Rp, when the RFID tag 3r is defective, or when the recording paper roll Rp is loaded with the left and right sides reversed. Accordingly, in the printing press controller 61, the rotation amount of the drive motor 52 (or a physical amount such as the feeding length of the corresponding recording paper Pr) required to rotate the recording paper roll Rp substantially once is set as a maximum setting value in advance. In the paper information reading mode, the rotation amount of the drive motor 52 is monitored. If the presence of the RFID tag 3r is not detected even when the maximum set value is reached, predetermined error processing is performed (steps S22 and S26). Specifically, execution of the paper information reading mode is stopped, and blinking control of an alarm lamp, display processing of an error message, and the like are performed. In the example, the maximum set value is set by the feeding length of the recording paper Pr, and 300 [mm] is set as an example. As described above, when performing the ID tag detection process, the rotation amount of the recording paper roll Rp that can be determined to have no RFID tag 3r is set in advance as the maximum setting value, and the RFID tag 3r is set even if the rotation amount reaches the maximum setting value. If a predetermined error process is performed when no error is detected, unnecessary rotation of the recording paper roll Rp can be avoided and an operator can be immediately notified of the occurrence of an error such as the absence of the RFID tag 3r.

  On the other hand, if the paper information reading process is normally completed, the rewinding process is performed on the recording paper roll Rp. That is, in the paper information reading process, the recording paper Pr is rotated to a position where the RFID tag 3r can be read by the reader / writer unit 51. Therefore, at the stage where the paper information reading process is completed, the leading end side of the recording paper Pr is excessive. It will be in the extended state and will be in the state exposed from the discharge port 44 of the main body cabinet part 22. Therefore, when the paper information reading process is normally completed, the recording paper Pr is rewound. In this case, at the timing when the paper information reading process is completed, the drive motor 52 is reversely rotated at a low speed, and the recording paper Pr is rewound in the reverse direction (steps S3 and S27). Then, the recording paper Pr is rewound by the amount fed forward. That is, control is performed to return to the set position and stop the rotation of the drive motor 52 (steps S28 and S29). Thereby, the setting process of the recording paper Pr is completed.

  Therefore, according to the paper information reading method according to the present embodiment, when the recording paper roll Rp is set in the printing machine 1, the distance and angle between the RFID tag 3r and the ID tag reading unit 4 vary. Even in this case, the paper information INp can always be read at the normal position where the RFID tag 3r is the shortest. Therefore, it is possible to eliminate reading errors, read the paper information INp accurately and reliably, and ensure sufficient reliability and stability. Further, since detection is always possible at the shortest distance with respect to the RFID tag 3r, the performance of the ID tag reading means 4 is sufficient with the minimum sensitivity. Therefore, it is possible to contribute to size reduction and cost reduction of the ID tag reading means 4 using a reader / writer unit or the like, and also to improve power saving performance.

  If the paper information reading process ends normally, a correction data setting process is performed (steps S3 and S4). In the internal memory unit 61m of the printing press controller 61, brightness / darkness adjustment parameters are set in advance as a data table, and printing parameters are set as a data table. In this case, the brightness adjustment parameter is a parameter for correcting the image data obtained from the scanner unit 2, and specifically, the image data is increased or decreased by increasing or decreasing the number of colored dots per unit area based on the paper information INp. It is a parameter that changes the brightness of. The print parameter is a parameter for correcting the print data supplied to the thermal head 11, and is specifically a parameter for changing the size of the color dot of the print data based on the paper information INp.

  Therefore, the optimum parameter is selected for the brightness adjustment parameter based on the paper information INp read by the paper information reading process described above (step S30). As for the print parameters, the optimum parameters are selected based on the paper information INp (step S31). Now, it is assumed that the optimum parameter selected from the brightness adjustment parameters is Xn, and the optimum parameter selected from the printing parameters is Yn. The selected parameters Xn and Yn are correction information corresponding to the paper information INp, that is, the type of recording paper Pr to be used (step S32). As for the parameter Xn, since the printing document Ps is unknown, at this time, two parameters corresponding to the line drawing mode and the photograph mode are included in the parameter Xn. Therefore, by such correction data setting processing, the image data is optimized by the light / dark adjustment parameter Xn selected based on the paper information INp, and the print data is optimized by the selected print parameter Yn. .

  Next, a case where a predetermined print process is performed using the printing machine 1 on which the recording paper Pr is set will be described mainly with reference to a flowchart shown in FIG.

  First, initial settings such as the number of sheets to be printed and the print density are performed by the operation unit 27 (step S10). Next, the printing document Ps is set on the document supply tray unit 25 of the scanner unit 2 (step S11). Thereafter, when the start key of the operation unit 27 is touched (ON), the printing document Ps is conveyed forward and scanned by the image sensor (step S12). Then, the scanned printing document Ps is discharged onto the document discharge tray unit 26. On the other hand, image data is obtained by scanning by the image sensor, and this image data is output from the scanner unit 2 and is given to the printing press controller 61 (step S13). At this time, it is determined whether the printing document Ps is a line drawing (binary data) or a photograph (multi-valued data), and a corresponding print mode is set. This setting may be manually set by an operator using the operation unit 27 or may be automatically set by a determination function in the printing press controller 61. By setting this print mode, the final brightness adjustment parameter Xn is set. That is, as described above, in the stage where the print mode is not set, two brightness adjustment parameters Xn are provisionally set. However, when the print mode is set, one corresponding brightness adjustment parameter Xn is set. Is done.

  On the other hand, for the image data given to the printing press controller 61, the image data is corrected based on the set brightness adjustment parameter Xn (step S14). As a result, corrected image data obtained by correcting the image data is obtained. In the case of the example, a process of obtaining corrected image data in which the brightness of the image data is changed by increasing or decreasing the number of colored dots per unit area based on the paper information INp is performed. Next, print data is generated from the corrected image data (step S15). This generation process is a general-purpose (known) print data generation step for obtaining print data for printing by the thermal head 11 from the corrected image data. Thereafter, the obtained print data is corrected based on the set print parameter Yn (step S16). Thereby, corrected print data in which the print data is corrected is obtained. In the case of the example, a process for obtaining corrected print data in which the size of the colored dots of the print data is changed based on the paper information INp is performed.

  The obtained corrected print data is supplied to each of the head portions 11a, 11b, 11c, and 11d constituting the thermal head 11. At this time, the print data are sequentially supplied as line units and divided to perform predetermined printing processing (steps S17 and S18). In FIG. 7, the recording paper Pr being conveyed is indicated by a virtual line, and in FIG. 3, the recording paper Pr discharged from the discharge port 44 is indicated by a virtual line. On the other hand, the series of printing processes described above are performed in the same manner until the set number of prints is reached (step S19).

  As mentioned above, although preferred embodiment was described in detail, this invention is not limited to such embodiment, It does not deviate from the summary of this invention in a detailed structure, a shape, a raw material, quantity, a numerical value, etc. It can be changed, added, or deleted arbitrarily.

  For example, the reader / writer unit 51 has been described as being fixedly disposed inside the main body cabinet unit 22, but as shown in FIG. 8, the reader / writer unit 51 may be configured so that the position in the left-right direction can be changed. In the illustrated example, a pair of upper and lower guide rails 81a and 81b extending in the left-right direction is disposed on the rear surface inside the main body cabinet portion 22, and a slider 82 is slidably loaded on the guide rails 81a and 81b. A reader / writer unit 51 was attached to the head. Further, a moving mechanism 83 using an endless timing belt and a pair of pulleys is provided, and a slider 82 is coupled to the timing belt, and the rotation of the drive motor 84 is transmitted to one pulley via the rotation transmission mechanism 85. Configured to be possible. Thereby, for example, when a narrow recording paper Pr is loaded by an attachment and the position of the RFID tag 3r is displaced in the left-right direction, or by using a recording paper other than the standard recording paper Pr, what is the standard position? For example, when the RFID tag 3r is attached to a different position, the position of the reader / writer unit 51 can be made to correspond. That is, the switching data 86 is given to the drive motor 84, and the reader / writer unit 51 can be moved to the corresponding detectable position.

  In addition, in the present invention, the thermal paper is exemplified as the recording paper Pr of the recording paper roll Rp in the embodiment, but various recording papers including plain paper can be applied. Further, in the ID tag detection process, the presence or absence of the RFID tag 3r is detected by the ID tag reading means 4 using a polling method. Means may be used. Further, in the stop control process, if the RFID tag 3r is detected, the control is performed to stop the rotation by slowing down, and then the control is performed by rotating the rotation in the reverse direction by a preset amount of rotation to stop the rotation again. A method of simply stopping the rotation may be employed depending on the low rotation speed or the configuration of the conveyance path. On the other hand, the printing press 1 provided integrally with the scanner unit 2 means that the scanner unit 2 is used integrally, and does not necessarily need to be mechanically integrated. Therefore, it may be a case where they are mechanically separated and cord-connected. Moreover, although the touch panel type display 27t was illustrated as the operation unit 27, other various types of operation units such as an operation unit combining an input panel such as a push button and a display unit can be applied. Further, the paper information INp is not limited to the exemplified information (items), and may include other various information, particularly more detailed information.

  The paper information reading method according to the present invention can be used in various printing machines using a recording paper roll, and the printing machine may be an independent printing machine or a printing function incorporated in another device. Part.

  1: printing machine, 3: ID tag, 3r: RFID tag, 4: ID tag reading means, Rp: recording paper roll, Rps: core tube section, INp: paper information, Pr: recording paper, Ff: forward direction, Fr :Reverse direction

Claims (6)

  A paper information reading method of a printing machine that reads paper information from an ID tag attached to a recording paper roll set in a printing machine by a predetermined ID tag reading unit, and records the recording paper roll set in the printing machine from a set position. When the ID tag is detected, the ID tag reading means detects the presence or absence of an ID tag when the paper is rotated in the forward direction, and when the ID tag is detected, the recording paper roll is rotated. A stop control process for stopping is performed, and after the rotation is stopped, a paper information reading process for reading the paper information recorded on the ID tag is performed by the ID tag reading unit, and then the recording paper roll is rotated in the reverse direction. A paper information reading method for a printing press, wherein a return control process for returning to the set position is performed.   2. The paper information reading method for a printing press according to claim 1, wherein the ID tag is an ID tag attached to a peripheral surface of a core tube portion of the recording paper roll.   3. The paper information reading method for a printing press according to claim 1, wherein the ID tag includes at least an RFID tag.   4. The paper information reading method for a printing press according to claim 1, wherein the ID tag detection processing detects the presence or absence of the ID tag by using a polling method by the ID tag reading means.   When performing the ID tag detection process, the rotation amount of the recording paper roll that can be determined to have no ID tag is set as a maximum setting value in advance, and the ID tag is detected even when the rotation amount reaches the maximum setting value. 5. A paper information reading method for a printing press as claimed in claim 1, wherein when it does not, predetermined error processing is performed.   The stop control process includes a control for stopping rotation by slowing down when the ID tag is detected, and then performing a control for rotating in a reverse direction by a preset rotation amount to stop again. Item 6. A paper information reading method for a printing press according to any one of Items 1 to 5.

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