JP6166579B2 - Data processing method of printing press - Google Patents

Description

  The present invention relates to a data processing method for a printing machine suitable for use in printing by a printing machine that is integrally provided with a scanner unit that obtains image data by scanning a printing document.

  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.

  That is, because the printer side reads (writes) the recording paper management information including the manufacturing date and time of the recording paper, sensitivity information, etc. stored in the IC tag provided on the core of the recording paper roll, Although there is a merit that the recording paper management information including these various types of information can be used, it is not necessarily sufficient from the viewpoint of further improving the quality (image quality) of the print image. In particular, even if some adjustments can be made with regard to image quality, there is a limit to adequately representing halftone images such as photographic images, so there is a limit to optimizing print images for recording paper. There was room for further improvement.

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

  In order to solve the above-described problem, the data processing method of the printing machine according to the present invention differs when printing is performed by the printing machine 1 integrally including the scanner unit 2 that scans the printing document Ps and obtains the image data Dv. When a recording paper roll Rp to which a plurality of types of thermal papers K1, K2, K3... Can be applied is set in the printing machine 1, the ID tag 3 attached to the recording paper roll Rp is used by a predetermined ID tag reading means 4. A paper information reading step (S2) for reading the paper information INp, and a first correction step (S30, S14) for correcting the image data Dv obtained from the scanner unit 2 based on the paper information INp to obtain the corrected image data Dva. A print data generation step (S15) for generating print data Dp based on the corrected image data Dva, and the print data Dp Characterized by comprising a second correcting step of obtaining a correction print data Dpa to be printed on the recording paper Pr from the recording paper roll Rp (S31, S16) by the correction processing based on the information INp.

  Further, in order to solve the above-described problem, the data processing method of the printing press according to the present invention performs printing by the printing press 1 that is integrally provided with the scanner unit 2 that scans the printing original Ps and obtains the image data Dv. A paper information reading step (S2) for reading the paper information INp from the ID tag 3 attached to the recording paper roll Rp set in the printing machine 1 by a predetermined ID tag reading means 4, and the scanner unit based on the paper information INp The first correction step (S30, S14) for correcting the image data Dv obtained from 2 to obtain the corrected image data Dva, and the print data generation step (S15) for generating the print data Dp based on the corrected image data Dva Then, the print data Dp is corrected based on the paper information INp, so that the recording paper Pr from the recording paper roll Rp is obtained. A second correction step (S31, S16) for obtaining corrected print data Dpa to be printed, and a step of printing the recording paper Pr by a thermal method by supplying the corrected print data Dpa to the thermal heads 11. It is characterized by.

  In this case, according to a preferred aspect of the invention, the ID tag 3 can include at least the RFID tag 3r. In the correction process of the first correction step (S30, S14), at least the corrected image data Dva in which the brightness of the image data Dv is changed by increasing / decreasing the number of colored dots C per unit area based on the paper information INp. The correction processing in the second correction step (S31, S16) includes correction print data in which the size of the color dot C of the print data Dp is changed based on at least the paper information INp. Correction processing for obtaining Dpa can be included.

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

  (1) Since the first correction step (S30, S14) for correcting the image data Dv obtained from the scanner unit 2 based on the paper information INp to obtain the corrected image data Dva is provided, the paper information INp is used in the printing machine 1. In addition to the conventional merit of being able to do so, by performing correction processing on the image data Dv obtained from the scanner unit 2, it is possible to precisely perform optimization especially when performing gradation expression of a halftone image such as a photographic image. The quality (image quality) of the printed image can be further improved.

  (2) Since a plurality of different types of thermal papers K1, K2, K3... Can be applied to the recording paper Pr of the recording paper roll Rp, optimization is made for each type of different thermal papers K1, K2, K3. It is possible to effectively ensure the effect of the data processing method according to the present invention that each thermal paper K1, K2, K3... Can be printed with the optimum quality (image quality) and the maximum performance from this viewpoint. Can be obtained.

  (3) Since the corrected print data Dpa is supplied to the thermal heads 11 to perform printing on the recording paper Pr by the thermal method, the data processing method according to the present invention can be most effectively implemented, Problems such as unnecessary increase in size and cost increase of the printing press 1 can be avoided such that the existing printing processing system can be used as it is.

  (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. Therefore, the paper information INp recorded in the RFID tag 3r From the viewpoint of easily and surely implementing the present invention, it can be implemented as the most desirable mode.

  (5) According to a preferred embodiment, as the correction process in the first correction step (S30, S14), the brightness of the image data Dv is changed by increasing or decreasing the number of color dots C per unit area based on at least the paper information INp. If the correction process for obtaining the corrected image data Dva is included, the image data Dv from the scanner unit 2 can be corrected based on the paper information INp, and in particular, correction elements that cannot be corrected for the print data Dp can be used. Therefore, the data processing method of the present invention can function as the most effective correction element.

  (6) According to a preferred embodiment, as a correction process in the second correction step (S31, S16), a correction process for obtaining corrected print data Dpa in which the size of the color dot C of the print data Dp is changed based on at least the paper information INp , The print data Dp can be corrected based on the paper information INp, and by combining with the correction process of the first correction step (S30, S14), a more desirable effect that is synergistic can be obtained. .

The flowchart for demonstrating the data processing method of the printing press which concerns on suitable embodiment of this invention, A flowchart for explaining a processing method when a recording paper roll is set in the printing press; An external perspective view of a printing press capable of carrying out the data processing 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 with the printing machine, 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, Functional block diagram of the printer, List of brightness adjustment parameters when correcting image data used in the data processing method, A list of print parameters when correcting the print data used in the data processing method, Operation explanatory diagram of the data processing method,

  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 data processing 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, for example, different types of color thermal papers K1, K2, K3... Including normal thermal paper, coated thermal paper, film-based thermal paper, transfer paper, long-term storage thermal paper, and the like are applicable. . In this way, if different types of thermal papers K1, K2, K3... Can be applied, optimization can be achieved for each type of different thermal papers K1, K2, K3. The effect of the data processing method according to the present invention that printing can be performed with the optimum quality (image quality) for each of K2, K3... Can be effectively ensured, and the maximum performance can be obtained from this viewpoint.

  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. Therefore, it can be implemented as the most desirable form from the viewpoint of easily and surely implementing the present invention, for example, only the paper information INp recorded on the RFID tag 3r can be read easily and reliably. Various paper information INp shown in the list in FIG. 6 is recorded in the illustrated RFID tag 3r. In the data processing method according to the present embodiment, mainly the recording paper type and the color at the time of recording paper coloring are used. doing. 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 formed by arranging a large number of heat generating elements in the line direction, and dots (points) printed on one heat generating element become one color dot C. 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. As described above, if the printing machine 1 is configured to include the thermal heads 11 that print the recording paper Pr by the thermal method by supplying the correction print data Dpa, the thermal printing method is applied to the recording paper Pr. Printing (color printing) can be performed, the data processing method according to the present invention can be most effectively carried out, and the existing printing processing system can be used as it is. The inconvenience can be avoided.

  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 program for executing the data processing method according to the present embodiment, that is, a paper information reading unit for reading the paper information INp from the ID tag 3 attached to the recording paper roll Rp by a predetermined ID tag reading unit 4. A first correction step for correcting image data Dv obtained from the scanner unit 2 based on the paper information INp to obtain corrected image data Dva; and generating print data Dp based on the corrected image data Dva. A program for executing a print data generation step and a second correction step for obtaining correction print data Dpa to be printed on the recording paper Pr from the recording paper roll Rp by correcting the print data Dp based on the paper information INp. included. 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 data processing method according to the present embodiment will be described with reference to the flowcharts shown in FIGS.

  When using the printing press 1, as shown in FIG. 1, first, the recording paper roll Rp is set. 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 of 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 the paper information reading process based on the paper information reading mode is automatically executed (step S2).

  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, that is, the core tube portion Rps is rotated in the forward direction (step S21). As a result, the RFID tag 3r is also turned and displaced about the core tube portion Rps. On the other hand, the reader / writer unit 51 monitors the presence / absence of detection of the RFID tag 3r by polling processing (steps S22 and S23).

  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, the motor stops at a position slightly beyond the normal stop position. If the motor stops, the drive motor 52 is controlled to rotate backward at a low speed and is returned by the set distance to stop. This set distance is set to a distance for returning to the normal stop position. If stopped 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. Thus, the paper information reading process is completed. In this paper information reading process, the paper ID INp is read from the ID tag 3 (RFID tag 3r) attached to the recording paper roll Rp set in the printing machine 1 by the predetermined ID tag reading means 4 (reader / writer unit 51). This is an information reading step.

  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 once is set as the maximum setting value in advance. In the information reading mode, the rotational speed 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.

  On the other hand, if the paper information reading process ends normally, a correction data setting process is performed (steps S3 and S4). As shown in FIG. 8, in the internal memory unit 61m of the printing press controller 61, the brightness adjustment parameters X1, X2, X3... X18 shown in FIG. Parameters Y1, Y2, Y3... Y9 are set as the data table 71y. In this case, the brightness adjustment parameter X1... Is a parameter for correcting the image data Dv obtained from the scanner unit 2, and specifically, as shown in FIG. 11A, the unit area is based on the paper information INp. This is a parameter for changing the brightness of the image data Dv by increasing / decreasing the number of hit color dots C. The print parameters Y1... Are parameters for correcting the print data Dp supplied to the thermal head 11, and specifically, as shown in FIG. 11B, the print data Dp is based on the paper information INp. This is a parameter for changing the size of the color dot C.

  Accordingly, for each parameter X1... In the data table 71x, the optimum parameter is selected based on the paper information INp read by the paper information reading process described above (step S27). The process related to this selection is a correction element in a first correction step described later. In FIG. 8, reference numeral 72 indicates a selection function for the data table 71 x in the printing press controller 61. For each parameter Y1... In the data table 71y, the optimum parameter is selected based on the paper information INp (step S28). The process related to this selection is a correction element in a second correction step described later. In FIG. 8, reference numeral 73 denotes a selection function for the data table 71 y in the printing press controller 61.

  Assume that the optimum parameter selected from the data table 71x is Xn and the optimum parameter selected from the data table 71y is Yn. The selected parameters Xn and Yn are set as correction data corresponding to the paper information INp, that is, the type of recording paper Pr to be used (step S29). Regarding the parameter Xn, since the printing document Ps is unknown, the print mode (line drawing (binary) mode or photograph (multi-value) mode) is not set at this point. Therefore, 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 Dv is optimized by the light / dark adjustment parameter Xn selected based on the paper information INp, and the print data Dp is optimized by the selected print parameter Yn.

  An example of optimization is as follows. Assume that a dark area is printed on the recording paper Pr. In the conventional method, energy corresponding to dark color expression is supplied to the heating element of the thermal head 11 to generate a corresponding amount of heat to print dark color. In this case, the characteristic of the recording paper (thermal paper) Pr may be the characteristic shown in FIG. 11B, that is, the characteristic that the size of the color dot C spreads like the color dot Cm by increasing the amount of heat. For example, the target dark color can be printed only by the control based on the print data Dp. However, depending on the type of recording paper (thermal paper) Pr, if the characteristic is the characteristic shown in FIG. 11 (a), that is, the characteristic that the size of the color dot C does not increase so much even if the amount of heat is increased, In the conventional method, a sufficient dark color cannot be expressed even if the amount of heat (energy) is increased. That is, sufficient gradation expression cannot be realized only by the control based on the print data Dp. On the other hand, in this case, if the data processing method according to the present embodiment is used, the print data Dp is controlled to be less than the original amount of heat, and the color dots are applied to the image data Dv obtained from the scanner unit 2. Control to increase the quantity of C is performed. As a result, as shown in FIG. 11A, the size (area) of the colored dots C is substantially expanded, and sufficient gradation expression for dark colors is realized.

  Further, in the case of the recording paper Pr, not only have such different characteristics, but also the characteristics at the time of color development. For example, there are recording paper Pr having a characteristic in which red is expressed more strongly, and recording paper Pr having a characteristic in which red is expressed weaker. Further, the characteristics differ depending on the print mode. For example, the print image is a line drawing (binary data) and a photograph (multi-value data). Therefore, data tables 71x and 71y that can select parameters X1..., Y1... For optimization in advance for such different characteristics are set, and the types K1, K2, and K3 of the recording paper Pr, and the color at the time of color development. .., Y1... Can be selected corresponding to the print mode. FIG. 9 shows the data contents of the data table 71x that can select the light and dark adjustment parameters X1... X18 for correcting the image data Dv, and FIG. 10 shows data that can select the print parameters Y1... Y9 for correcting the print data Dp. The data content of the table 71y is shown. In particular, in the data processing method according to the present embodiment, since it is assumed that the printing machine 1 is integrally provided with the scanner unit 2, adjustment processing can be performed on the image data Dv obtained from the scanner unit 2. The adjustment process can include correction elements that cannot be corrected for the print data Dp.

  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 roll Rp is rotated to a position where the RFID tag 3r can be read by the reader / writer unit 51. And is exposed from the outlet 44 of the main body cabinet section 22. Therefore, when the paper information reading process is completed normally, the recording paper roll Rp 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 roll Rp is rewound in the reverse direction (steps S3 and S30). Then, if the recording paper roll Rp is rewound forward, the control of stopping the rotation of the drive motor 52 is performed (steps S31 and S32). Thereby, the setting process of the recording paper roll Rp is completed.

  Next, a case where a predetermined printing process is performed using the printing machine 1 in which the recording paper roll Rp 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 Dv is obtained by scanning by the image sensor, and this image data Dv is output from the scanner unit 2 and is given to the printing press controller 61 as shown in FIG. 8 (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, at the stage where the print mode is not set, two brightness adjustment parameters Xn are provisionally set. However, by setting the print mode, only one corresponding brightness adjustment parameter Xn is set. Is set.

  On the other hand, as shown in FIG. 8, the image data Dv given to the printing press controller 61 is corrected by the brightness adjustment function 74 based on the set brightness adjustment parameter Xn (see FIG. 8). Step S14). As a result, corrected image data Dva serving as corrected image data is obtained. This correction process is a first correction step in which the image data Dv obtained from the scanner unit 2 is corrected based on the paper information INp. In the case of the example, in this first correction step, a process of obtaining corrected image data Dva in which the brightness of the image data Dv is changed by increasing or decreasing the number of colored dots C per unit area based on the paper information INp (FIG. 11 (a)). By providing such a first correction step, the image data Dv from the scanner unit 2 can be corrected based on the paper information INp, and in particular, correction elements that cannot be corrected for the print data Dp can be used. It can function as the most effective correction element in carrying out the data processing method of the embodiment.

  Next, the print data generation function 75 generates print data Dp from the corrected image data Dva (step S15). This generation process is a general-purpose (known) print data generation step for obtaining print data Dp for printing by the thermal head 11 from the corrected image data Dva. Thereafter, as shown in FIG. 8, the obtained print data Dp is corrected by the print data correction function 76 based on the set print parameter Yn (step S16). As a result, corrected print data Dpa serving as corrected print data is obtained. This correction process is a second correction step in which the print data Dp is corrected based on the paper information INp. In the case of the example, in the second correction step, a process of obtaining corrected print data Dpa in which the size of the color dot C of the print data Dp is changed based on the paper information INp (see FIG. 11B). By providing such a second correction step, the print data Dp can be corrected based on the paper information INp, and a more desirable effect that is synergistic by combining with the correction processing of the first correction step described above. Can be obtained.

  The obtained corrected print data Dpa 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).

  Therefore, according to the data processing method of the printing press 1 according to this embodiment, the paper information reading step (step S2) for reading the paper information INp from the ID tag 3 attached to the recording paper roll Rp set in the printing press 1. ), A first correction step (steps S30 and S14) for correcting image data Dv obtained from the scanner unit 2 based on the paper information INp to obtain corrected image data Dva, and printing based on the corrected image data Dva. A print data generation step (step S15) for generating data Dp, and correction processing is performed on the print data Dp based on the paper information INp to obtain corrected print data Dpa for printing on the recording paper Pr from the recording paper roll Rp. Since the second correction step (steps S31 and S16) is included, the paper information INp is stored in the printing press 1. In addition to the conventional merit that it can be used, by performing correction processing on the image data Dv obtained from the scanner unit 2, particularly when performing gradation expression of a halftone image such as a photographic image, fine optimization is performed. The quality (image quality) of the printed image can be further improved.

  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 printing press 1 integrally provided with the scanner unit 2 in the present invention 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. On the other hand, the ID tag 3 is shown attached to the outer peripheral surface of the core tube portion Rps, but may be attached to the inner peripheral surface. On the other hand, as the correction process of the first correction step (steps S30 and S14), the corrected image data Dva in which the brightness of the image data Dv is changed is obtained by increasing or decreasing the number of color dots C per unit area based on the paper information INp. Although the correction process is included, other correction processes are not excluded. Similarly, the correction process of the second correction step (steps S31 and S16) includes a correction process for obtaining corrected print data Dpa in which the size of the color dot C of the print data Dp is changed based on the paper information INp. It does not exclude other correction processes.

  The data processing method according to the present invention can be used in various printing machines that are integrally provided with a scanner unit that obtains image data by scanning a printing document, and the printing machine may be an independent printing machine. However, it may be a printing function unit incorporated in another device.

  DESCRIPTION OF SYMBOLS 1: Printer, 2: Scanner part, 3: ID tag, 3r: RFID tag, 4: ID tag reading means, 11 ...: Thermal head, Dv: Image data, Dva: Correction image data, Dp: Print data, Dpa : Correction print data, Ps: printing document, Pr: recording paper, Rp: recording paper roll, INp: paper information, K1, K2, K3...: Thermal paper, C: colored dots, (S2): paper information reading step , (S15) Print data generation step, (S30, S14): First correction step, (S31, S16): Second correction step

Claims (10)

  A data processing method of a printing machine when printing is performed by a printing machine that integrally includes a scanner unit that scans a printing document and obtains image data, and a recording paper roll to which a plurality of different types of thermal paper can be applied When set in the printing machine, a paper information reading step of reading paper information from an ID tag attached to the recording paper roll by a predetermined ID tag reading means, and image data obtained from the scanner unit based on the paper information A first correction step for obtaining corrected image data by performing correction processing, a print data generation step for generating print data based on the corrected image data, and correcting the print data based on the paper information And a second correction step for obtaining correction print data to be printed on the recording paper from the recording paper roll. Data processing method of the machine.   2. The data processing method for a printing press according to claim 1, wherein the ID tag includes at least an RFID tag.   The correction process of the first correction step includes at least a correction process for 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. 3. A data processing method for a printing press according to claim 1, wherein the data processing method is used.   The correction process of the second correction step includes at least a correction process for obtaining corrected print data in which the size of the color dot of the print data is changed based on the paper information. 4. A data processing method for a printing press according to item 3.   The printing machine data according to any one of claims 1 to 4, wherein the printing machine includes a thermal head that prints the recording paper by a thermal method by supplying the correction print data. Processing method.   An ID tag attached to a recording paper roll set in the printing machine when printing is performed by a printing machine integrally provided with a scanner unit that scans a printing document and obtains image data A paper information reading step of reading paper information by a predetermined ID tag reading means, a first correction step of correcting image data obtained from the scanner unit based on the paper information to obtain corrected image data, and the corrected image A print data generation step for generating print data based on the data, and a second correction for obtaining corrected print data to be printed on the recording paper from the recording paper roll by correcting the print data based on the paper information And a thermal method for the recording paper by supplying the corrected print data to a thermal head Data processing method for a printing press, characterized in that it comprises a step of performing more printing.   7. The data processing method for a printing press according to claim 6, wherein a plurality of different types of thermal paper can be applied to the recording paper.   8. The data processing method for a printing press according to claim 6, wherein the ID tag includes at least an RFID tag.   The correction process of the first correction step includes at least a correction process for 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. 9. A data processing method for a printing press according to claim 6, 7 or 8.   10. The correction process of the second correction step includes at least a correction process for obtaining corrected print data in which the color dot size of the print data is changed based on the paper information. A data processing method for a printing press according to any one of the above.

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