JP2012152961A - Ink-key opening degree preset value acquisition device, ink-key opening degree preset value acquisition program, ink-key opening degree preset value acquisition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink-key opening degree preset value acquisition device or the like which is reflected with an operation characteristic or the like of each ink key, and can acquire a preset value of an ink-key opening degree.SOLUTION: An ink-key opening degree set value is specified on the basis of a symbol pattern area ratio at each ink key, and an ink-key opening degree preset value is acquired by correcting the data. Furthermore, the corrected data are properly updated on the basis of a differential value between the ink-key opening degree set value which is specified on the basis of the ink-key opening characteristic data reflected with the operation characteristic or the like of the ink key and an OK ink-key opening degree set value at the time when prescribed printing quality is obtained.

Description

  The present invention relates to a technical field such as an ink key opening preset value acquisition device that acquires a preset value of an ink key opening in a printing press.

  First, an offset printing machine will be described with reference to FIGS. The offset printing machine is provided with printing units U for printing colors (for example, when the printing colors are four colors of CMYK). As shown in FIG. 1, the printing unit U includes an ink key type ink supply device including an ink key 1100, an ink base roller 1200, an ink fountain 1300 for storing ink, a chip 1500, and the like. The ink key 1100 is a blade-like member, and a plurality (eight in FIG. 2) are juxtaposed in the printing width direction as shown in FIG. Each ink key 1100 is displaced in the direction of arrow 1110 according to the up and down movement of the chip 1500. Along with this, the gap amount (ink key opening 1400) of the ink key 1100 with respect to the ink base roller 1200 is displaced. As a result, the ink supply amount can be adjusted for each ink key 1100 (that is, the region where ink is supplied by the ink key). Further, the amount of ink supplied to the entire pattern can be adjusted by changing the rotation speed of the ink source roller 1200. In this way, in the printing unit U, the ink supply amount can be adjusted by controlling the ink key opening 1400 or the rotation speed of the ink base roller 1200. The ink supplied from the ink supply device is transferred to paper as a pattern through a plate cylinder and a blanket cylinder to become a printed matter. Since the light absorptance varies depending on the thickness (film thickness) of the ink attached (stacked) on the paper, the color tone of the printed matter varies. Therefore, the color tone of the printed matter can be adjusted by controlling the ink supply amount (that is, the ink key opening 1400 and the rotation speed of the ink base roller 1200).

  The adjustment of the ink key opening 1400 is performed by the operator of the printing press changing the ink key opening setting value from the operator terminal. A reference ink key opening 1400 (referred to as zero point) is set for each printing machine, and when the ink key opening 1400 is wider than the zero point, a value of “+ (plus)” is set as the ink key opening setting value. On the other hand, when narrowing, a value of “− (minus)” may be set.

  In the offset printing machine, when printing a desired printed matter, printing for color matching called trial printing is performed before performing the main printing. The trial printing is performed until the operator obtains a desired color tone while comparing the printed material with the color sample. Since the printed matter during the trial printing is discarded as waste paper, it is desirable to reduce the amount of the trial printing as much as possible in order to reduce the waste of the printing paper.

  Under such circumstances, as a technique for reducing the trial printing, the difference between the preset value that is the ink key opening setting value at the start of the trial printing and the OK value that is the ink key opening setting value when the desired color tone is obtained. Many techniques aimed at reducing the size have been disclosed. Specifically, for example, the area ratio (picture area ratio) occupied by each print color of CMYK is calculated for each ink key (specifically, for each area where ink is supplied by the ink key), and the calculated pattern area ratio is calculated. In general, a technique for experimentally determining the relationship between the ink key opening setting value for obtaining the reference density of the pattern and determining the preset value according to the pattern area ratio is known.

  In addition, Patent Document 1 refers to an ink key opening characteristic line that indicates a correspondence relationship between a pattern area ratio and an ink key opening setting value, and an ink key preset that individually presets an ink key opening setting value based on the pattern area ratio. An ink key preset device is disclosed that records an actual OK value for each ink key a predetermined number of times and creates a new ink key opening characteristic line based on the recorded OK value.

Japanese Patent No. 4395287

  However, these techniques are based on the assumption that each ink key 1100 in the printing unit U operates normally, and the operation characteristics of the individual ink keys 1100 are not considered. For example, when the zero point of the ink key 1100 is misaligned, the ink is fixed between the adjacent ink keys 1100 (for example, a portion indicated by B in FIG. 2) or the contact portion between the ink key 1100 and the chip 1500, and the ink key 1100 When a malfunction occurs, or when a backlash of the mechanism or gear occurs, the ink key 1100 does not operate according to the set value, and the trial printing due to the adjustment increases. That is, when the operator tries to displace the ink key opening 1400 by the ink key opening setting value “10”, but the actual displacement is only by the ink key opening setting value “7” due to the above factors or the like. In order to forcefully displace the ink key 1100, the ink key opening set value is set to a value larger than “10”. Therefore, in order to obtain an appropriate preset value, it is necessary to consider such operation characteristics for each ink key 1100.

  The present invention has been made in view of such problems, and provides an ink key opening preset value acquisition device and the like that can acquire a preset value of an ink key opening reflecting the operation characteristics of each ink key. The task is to do.

  In order to solve the above-mentioned problem, the invention described in claim 1 is an ink key opening preset value acquisition device that acquires, for each ink key, ink key opening preset values of a plurality of ink keys, according to the pattern area ratio. Character data storage means for storing ink key opening characteristic data for specifying the ink key opening setting value, and for correcting the ink key opening setting value specified on the basis of the ink key opening characteristic data for each ink key Correction data storage means for storing the correction data, picture area ratio calculation means for calculating the pattern area ratio for each ink key, and the calculated pattern area ratio and the ink key opening characteristic data for each ink key. And an ink key opening degree specifying means for specifying an ink key opening setting value, and the specified ink for each ink key. Correction means for correcting the key opening setting value based on the correction data corresponding to the ink key, and a preset value for acquiring the corrected ink key opening setting value as the ink key opening preset value for each ink key For each ink key, an acquisition means and a difference value between an ink key opening setting value specified based on the ink key opening characteristic data and an OK ink key opening setting value when a predetermined print quality is obtained. Difference value recording means for recording the difference value information in the difference value storage means, and the correction data storage means for each ink key based on the difference value indicated by the difference value information stored in the difference value storage means. Correction data updating means for updating the correction data.

  According to this configuration, for each ink key, based on the difference value between the ink key opening setting value specified based on the ink key opening characteristic data and the OK ink key opening setting value when a predetermined print quality is obtained. Correction data is updated. Further, a value obtained by correcting the ink key opening setting value specified based on the pattern area ratio calculated for each ink key and the ink key opening characteristic data with the correction data is acquired as the ink key opening preset value. “The difference value between the ink key opening setting value specified based on the ink key opening characteristic data and the OK ink key opening setting value when a predetermined print quality is obtained” indicates that the operator sets the ink key opening setting value. The operating characteristics of the ink key are reflected in the operation amount when the change is made. In other words, the operation characteristics of each ink key are reflected in the correction data, and are also reflected in the preset value of the ink key opening. Therefore, according to the present invention, it is possible to acquire a preset value of the ink key opening degree that reflects the operation characteristics and the like of each ink key.

  Further, the invention according to claim 2 is the ink key opening preset value acquisition device according to claim 1, wherein the difference value recording means stores the difference value information for each ink key. The correction data updating means calculates an average value of the difference values from at least the predetermined number of difference value information stored in the difference value storage means, and the correction data is calculated based on the calculated average value. It is characterized by updating.

  According to this configuration, the correction data can be updated with the average value of the operator operation amounts for the most recent predetermined number. Therefore, according to the present invention, it is possible to eliminate the characteristic of the individual operation amount caused by causes other than the ink key and to correct the operation caused by the ink key.

  The invention according to claim 3 is the ink key opening preset value acquisition device according to claim 1 or 2, wherein the OK ink key opening setting value is set at a reference temperature according to the temperature during printing. Temperature correction data storage means for storing temperature correction data for correction to values when printed, wherein the characteristic data storage means specifies an ink key opening setting value corresponding to the pattern area ratio at the reference temperature Ink key opening characteristic data is stored, and the difference value recording means is corrected for each ink key by the ink key opening setting value specified based on the ink key opening characteristic data and the temperature correction data. Difference value information indicating a difference value from the OK ink key opening setting value is recorded in the difference value storage means.

  Therefore, according to the present invention, even if the printing temperature is different from the reference temperature, the OK ink key opening estimated to be obtained if the OK ink key opening setting value is printed at the reference temperature. Since it can correct | amend to a setting value, correction data can be updated with the OK ink key opening setting value from which the influence by the difference in temperature was excluded.

  According to a fourth aspect of the present invention, there is provided the ink key opening preset value acquisition device according to any one of the first to third aspects, wherein the difference value recording means includes an ink key whose difference value is greater than a threshold value. If there is, the difference value information is not stored in the difference value storage means for at least the corresponding ink key.

  According to this configuration, when an operation corresponding to the operation amount exceeding the threshold is performed on the ink key, at least the difference value information of the corresponding ink key is not stored in the difference value storage unit. Therefore, according to the present invention, it is possible to prevent the correction data from being updated based on the operation amount when an exceptional operation amount operation is performed by the operator.

  The invention according to claim 5 is an ink key opening preset value acquisition device for acquiring the ink key opening preset value of a plurality of ink keys for each ink key, wherein the ink key opening setting value corresponding to the pattern area ratio is obtained. Character data storage means for storing ink key opening characteristic data for specifying, and correction data for correcting an ink key opening setting value specified based on the ink key opening characteristic data for each ink key is stored. A computer included in an ink key opening preset value acquisition device comprising correction data storage means, a pattern area ratio calculating means for calculating the pattern area ratio for each ink key, and the calculated pattern area ratio for each ink key. Ink key opening specification that specifies the ink key opening setting value based on the ink key opening characteristic data A correction means for correcting the specified ink key opening setting value for each ink key based on the correction data corresponding to the ink key; the corrected ink key opening setting value for each ink key; Preset value acquisition means for acquiring as an ink key opening preset value, an ink key opening setting value specified based on the ink key opening characteristic data for each ink key, and an OK ink key opening when a predetermined print quality is obtained Difference value recording means for recording difference value information indicating a difference value with the degree setting value in the difference value storage means, for each ink key, based on the difference value indicated by the difference value information stored in the difference value storage means, Ink ink that functions as correction data update means for updating correction data stored in the correction data storage means. It is opening preset value acquisition program.

  The invention according to claim 6 is an ink key opening preset value acquisition device for acquiring the ink key opening preset value of a plurality of ink keys for each ink key, and the ink key opening setting value corresponding to the pattern area ratio is obtained. Character data storage means for storing ink key opening characteristic data for specifying, and correction data for correcting an ink key opening setting value specified based on the ink key opening characteristic data for each ink key is stored. Correction data storage means, an ink key opening preset value acquisition method executed by an ink key opening preset value acquisition device, the step of calculating the pattern area ratio for each ink key, and for each ink key, the above Based on the calculated pattern area ratio and the ink key opening characteristic data, the ink key opening setting value is Correcting the specified ink key opening setting value for each ink key based on the correction data corresponding to the ink key, and correcting the ink key opening setting value for each ink key. Are acquired as the ink key opening preset value, the ink key opening setting value specified for each ink key based on the ink key opening characteristic data, and the OK ink key when a predetermined print quality is obtained. The step of recording the difference value information indicating the difference value with the opening setting value in the difference value storage means, and the difference value indicated by the difference value information stored in the difference value storage means for each ink key, And a step of updating correction data stored in the correction data storage means. It is the acquisition method.

  According to the present invention, the correction data is updated based on the operation amount when the operator changes the ink key opening setting value, which reflects the operation characteristics of the ink key. In other words, the operation characteristics of each ink key are reflected in the correction data, and are also reflected in the preset value of the ink key opening. Therefore, it is possible to acquire a preset value of the ink key opening degree that reflects the operation characteristics of each ink key.

1 is a schematic diagram of a printing unit in an offset printing machine. It is the schematic for demonstrating the positional relationship of a some ink key and an ink origin roller. It is a figure which shows schematic structure of an offset rotary printing system. It is a block diagram which shows the schematic structure of an operator terminal. It is a figure which shows an example of ink key opening degree characteristic data. It is a figure which shows an example at the time of dividing | segmenting an image according to an ink key. It is a figure which shows an example of setting log | history data. It is a figure which shows an example of correction value data. It is a flowchart which shows an example of the process at the time of the printing by the control part of an operator terminal. It is a figure which shows an example of the relationship between temperature and the film thickness of the ink adhering to printed matter.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The embodiment described below is an embodiment when the present invention is applied to the rotary offset printing system S. In this embodiment, the printing unit included in the printing press included in the offset rotary printing system S has the same configuration as the printing unit U described with reference to FIG. This will be described using reference numerals.

  FIG. 3 is a diagram showing a schematic configuration of the offset rotary printing system S according to the embodiment of the present invention. The offset rotary printing system S includes a printing press P and an operator terminal 1.

  The printing press P is a multi-color printing press, and printing units U1 to U4 are provided for each ink color (C (cyan), M (magenta), Y (yellow), K (black)). Basically, the printing unit U1 corresponds to K, the printing unit U2 corresponds to C, the printing unit U3 corresponds to M, and the printing unit U4 corresponds to Y. Depending on the pattern or color to be printed, the color assigned to each printing unit U May be different.

  As described above with reference to FIG. 1, each printing unit U includes an ink key type ink supply device including a plurality of ink keys 1100, an ink source roller 1200, and the like. Each ink key 1100 of each printing unit U is assigned a key NO, and the ink keys 1100 having the same key NO print the same area on the paper. Further, since the printing press P according to the present embodiment is a double-sided printing press, each printing unit U is provided with a pair of blanket cylinders (upper cylinder, lower cylinder) so as to sandwich the paper transport path, and each blanket cylinder. On the other hand, a plate cylinder (upper cylinder, lower cylinder) and an ink supply device (upper cylinder side, lower cylinder side) are provided.

  The operator terminal 1 generates printing press control information for controlling the printing press P based on an input operation or the like by the operator, and transmits the printing press control information to the printing press P. In the printing press control information, the ink key opening degree control information indicating the ink key opening degree setting value for controlling the ink key opening degree 1400 (that is, the ink supply amount) of each ink key 1100 and the rotation speed of the ink base roller are controlled. Rotation speed control information indicating a rotation speed setting value for the purpose, pull rate control information indicating a pull ratio setting value for controlling the pull ratio (indicating the degree of pulling on the paper during paper conveyance), and the like.

  The operator terminal 1 specifies an ink key opening setting value for each ink key 1100 of each printing unit U based on ink key opening characteristic data that defines the ink key opening setting value according to the pattern area ratio. In addition, from the viewpoint that the operating characteristic of the ink key 1100 is reflected by the amount of displacement of the ink key opening setting value by the operator (ink key opening operation amount), the operator terminal 1 of the present embodiment The ink key opening setting value is corrected by correction value data based on the ink key opening operation amount, and a preset value to be transmitted to the printing press P as ink key opening control information is acquired (the preset value is specified based on the ink key opening characteristic data). This is a value obtained by correcting the ink key opening setting value to be corrected by correction value data). More specifically, the operator terminal 1 determines the difference between the ink key opening setting value specified based on the ink key opening characteristic data and the OK value (ink key opening setting value when a predetermined print quality is obtained). The correction value data is appropriately updated based on the ink key opening operation amount, and the preset value is acquired by correcting the ink key opening setting value based on the correction value data. As a result, the ink key opening 1400 corresponding to the ink key opening setting value based on the ink key opening characteristic data can be obtained by eliminating the influence of the operation characteristics of the ink key 1100.

  Next, the structure and function of each part constituting the operator terminal 1 according to the present embodiment will be described with reference to FIG.

  FIG. 4 is a block diagram showing a schematic configuration of the operator terminal 1 of the present invention. As shown in FIG. 4, the operator terminal 1 includes a control unit 11, a storage unit 12, a display unit 13, an operation unit 14, and a communication unit 15 for performing communication with the printing press P. The control unit 11, the storage unit 12, the display unit 13, the operation unit 14, and the communication unit 15 are connected to each other via a bus.

  The control unit 11 includes a CPU (Central Processing Unit) 11a having a calculation function, a ROM (Read Only Memory) 11b, a working RAM (Random Access Memory) 11c, an oscillation circuit (not shown), and the like. Based on the operation signal from the operation unit 14, information for controlling each of the constituent members is generated to realize the operation corresponding to the operation information included in the operation signal, and the information is transmitted via the bus. It outputs to a corresponding structural member and controls the operation of each structural member.

  In addition, the control unit 11 executes various control programs stored in the storage unit 12 and the like, so that the pattern area ratio calculating unit, the ink key opening degree specifying unit, the correcting unit, the preset value acquiring unit, the difference value recording of the present invention. And function as correction data update means.

  The storage unit 12 stores ink key opening characteristic data 121, correction value data 122, setting history data 123, various setting information, and the like. The storage unit 12 is an example of the characteristic data storage unit, the correction data storage unit, and the difference value storage unit of the present invention.

  The storage unit 12 stores various control programs, data, and the like including the ink key opening preset value acquisition program of the present invention. For example, the various programs may be acquired from another server device or the like via a network, or may be recorded on a recording medium and read via a drive device. That is, the ink key opening degree preset value acquisition program of the present invention stored in the storage unit 12 can be transmitted via a network, or can be recorded and transferred on a computer-readable recording medium. .

  The display unit 13 is configured by a liquid crystal display or the like, and displays plate making data, various screens such as an operation screen and a setting screen. On the setting screen, the operator sets the ink key opening setting value, the ink original roller rotation speed setting value, the draw rate setting value, paper information (for example, information on paper such as paper type, paper width, and weight), Ink information (for example, information on ink, such as the type of ink), a set value of drying temperature, and the like can be set. The control unit 11 stores various information set on the setting screen in the storage unit 12 and transmits a part of the information to the printing press P as control information. The plate making data can be output by a printer connected to the operator terminal 1.

  Next, the ink key opening degree characteristic data 121 will be described with reference to FIGS. As shown in FIG. 5, the ink key opening characteristic data 121 is data for specifying an ink key opening setting value corresponding to the pattern area ratio, and is stored in the storage unit 12 for each paper type in this embodiment. ing. The reason why the ink key opening characteristic data 121 is stored for each paper type is that the ink penetration rate differs depending on the paper type, and the color tone is different even when printing is performed with the same amount of ink. Since the color tone may vary depending on the type of ink, the ink key opening characteristic data 121 may be set for each type of ink.

  As shown in FIG. 6, the pattern area ratio is a value calculated for each of the divided areas 200 a to 200 h obtained by dividing the plate-making data 200 in the printing width direction (roller axial direction). The divided areas 200a to 200h are set corresponding to each ink key 1100 (FIG. 6 is an example in the case where eight ink keys are provided in each printing unit U). The pattern area ratio is the ratio of the area (pattern area) to which the target color is added in each of the divided areas 200a to 200h. For example, in the case of the ink key 1100 in the printing unit U corresponding to C (cyan), the target color is C (cyan). The pattern area ratio is calculated by multiplying the number of divided areas by 4 (four colors of C, M, Y, K) (8 areas × 4 colors = 32 in the example of FIG. 6). Note that a known calculation method can be used as a method for calculating the pattern area ratio, and a calculation method in which the control unit 11 calculates from digital plate-making data can be employed as in the present embodiment. In addition, in the initial state (at the time of shipment) of the operator terminal 1, ink key opening degree characteristic data 121 obtained experimentally is recorded.

  The control unit 11 selects the ink key opening degree characteristic data 121 corresponding to the paper type set from the setting screen from the plurality of ink key opening degree characteristic data 121 stored in the storage unit 12 and opens the selected ink key opening degree. Based on the degree characteristic data 121 and the pattern area ratio calculated for each of the divided areas 200a to 200h, the ink key opening setting value of each ink key 1100 is specified.

  Next, the setting history data 123 will be described with reference to FIG. First, the flow until the setting history data 123 is recorded in the storage unit 12 will be described. In the trial printing, when the desired color tone cannot be obtained with the preset value, the operator changes the ink key opening setting value from the operator terminal 1 to adjust the color tone. When the desired color tone is obtained (referred to as “OK”), the operator performs a predetermined OK operation (for example, an operation of clicking the OK button on the operation screen). When the control unit 11 detects the OK operation, the control unit 11 stores the setting history data 123 in the storage unit 12.

  As shown in FIG. 7, the setting history data 123 includes condition information and ink key information. The condition information includes the setting value of the rotation speed of the ink original roller at the time of OK, the setting value of the draw ratio, paper information (for example, paper type, paper width, weight), ink information (for example, ink type), printing machine It consists of information such as the temperature of the room where P is installed and the set value of the drying temperature. On the other hand, the ink key information includes, for each ink key 1100 in each printing unit U (identified by the printing unit NO), the pattern area ratio (the pattern area ratio of the divided area 200 corresponding to the ink key), the ink key opening setting value (the ink key opening value). Ink key opening setting value specified based on degree characteristic data 121), OK value, ink key opening operation amount (difference between ink key opening setting value specified based on ink key opening characteristic data 121 and OK value), etc. It consists of information. The ink key opening operation amount is not a simple difference value between the ink key opening setting value specified based on the ink key opening characteristic data 121 and the OK value, but a value having a direction of “+” or “−”, That is, the value indicates how much the ink key opening setting value is displaced in the direction of “+” or “−” by the operator. For example, when the ink key opening setting value specified based on the ink key opening characteristic data 121 is “+5” and the OK value is “−5”, the ink key opening operation amount is “−10”. When the ink key opening setting value specified based on the ink key opening characteristic data 121 is “−5” and the OK value is “+5”, the ink key opening operation amount is “+10”. Become. In addition, since the ink key opening operation amount can be calculated from the ink key opening setting value and the OK value specified based on the ink key opening characteristic data 121, it is not included in the ink key information, and if necessary, the ink key opening characteristic It may be calculated from the ink key opening setting value specified based on the data 121 and the OK value.

  The setting history data 123 is accumulated instead of being overwritten and updated in the storage unit 12 (an upper limit may be set on the number of accumulated cases and deleted from old data). As will be described later, the accumulated setting history data 123 is used when the ink key opening degree characteristic data 121 and the correction value data 122 are updated.

  Next, a process when the control unit 11 updates the ink key opening degree characteristic data 121 based on the setting history data 123 accumulated in the storage unit 12 will be described. The ink key opening degree characteristic data 121 is updated for each pattern area ratio. For example, when the pattern area ratio included in the ink key information of the setting history data 123 accumulated most recently is only four pattern area ratios 5, 15, 20, and 40%, the ink key opening degree characteristic data 121 The update is performed only for the portions with the pattern area ratios of 5, 15, 20, and 40%.

  Here, the case where the part of the pattern area ratio 5% in the ink key opening degree characteristic data 121 is updated will be described. The control unit 11 determines that the average value obtained from all OK values (including the latest OK value) when the pattern area ratio is 5% from the accumulated setting history data 123 is 5 for the pattern area ratio. The ink key opening degree characteristic data 121 is updated so that the ink key opening degree setting value when it is% is obtained. That is, the control unit 11 updates the ink key opening degree characteristic data 121 based on the average value of the past OK value and the latest OK value having the same pattern area ratio. Note that if the pattern area ratio is calculated finely (for example, up to the decimal point), the setting history data 123 of the same pattern area ratio is unlikely to be duplicated, so the decimal part is rounded off to a certain extent. It is good to calculate the pattern area ratio.

  Next, the correction value data 122 will be described. The correction value data 122 is data stored for each ink key 1100 in order to correct the ink key opening setting value specified based on the ink key opening characteristic data 121. The correction value data 122 is stored for each paper type as well as the ink key opening characteristic data 121 (and may be stored for each ink type). As described above, when the operation amount of the ink key 1100 is smaller than the operation amount intended on the control side due to various mechanical factors, the operator tries to increase the operation amount of the ink key 1100, and thus the ink key opening operation amount is large. Become. Therefore, the control unit 11 updates the correction value data 122 for each ink key 1100 based on the ink key opening operation amount included in the accumulated setting history data 123, while opening the ink key for each ink key 1100 at the time of trial printing. By adding the correction value data 122 to the ink key opening setting value acquired on the basis of the degree characteristic data 121, the ink key opening 1400 that is the same as that in the normal state can be obtained even for the ink key 1100 whose operating amount is not appropriate. .

  FIG. 8 shows the correction value data 122 for each ink key 1100 identified by the key NO. FIG. 8 shows a case where 29 ink keys 1100 are provided in one printing unit U. In the example of FIG. 8, the correction value data 122 is “0” for the ink key 1100 with the key numbers “1”, “2”, “5”, “28”, “29”, and the ink key 1100 operates normally. It shows that you are doing. On the other hand, the correction value data 122 is “5” or more for the ink keys 1100 with the key numbers “22”, “24”, and “25”. This indicates that the ink key opening operation amount of the operator is large because the ink key 1100 does not operate normally (because the operation amount of the ink key 1100 is smaller than normal). Like these ink keys 1100, for ink keys 1100 whose correction value data 122 is not “0”, the correction value data 122 is added to the ink key opening setting value specified based on the ink key opening characteristic data 121, and Ink key opening 1400 can be obtained.

  Next, processing when the control unit 11 updates the correction value data 122 based on the setting history data 123 will be described. The correction value data 122 is updated every time the operator performs an OK operation for each ink key 1100. Specifically, when an OK operation is detected, the control unit 11 detects, for each ink key 1100, the ink key opening operation amount included in all the accumulated setting history data 123 (the ink key opening operation amount at the most recent OK time). The correction value data 122 is updated with the average value obtained from the above. That is, the control unit 11 calculates new correction value data 122 for each ink key 1100 based on the average value of the past ink key opening operation amount and the latest ink key opening operation amount. In calculating the average value, the average value may be calculated based on the most recent predetermined number of setting history data 123 among the accumulated setting history data 123. The predetermined number may be an arbitrary value, and may be calculated from one (that is, only the latest setting history data 123). In this case, the latest ink key opening manipulated variable is not an average value. The updated correction value data 122 is obtained.

  Next, printing processing by the control unit 11 of the operator terminal 1 will be described with reference to the flowchart of FIG. The printing process is performed for each printing unit U (that is, printing colors C, M, Y, and K). The printing process is started when a test printing start operation by the operator is detected.

  First, the control unit 11 of the operator terminal 1 calculates a pattern area ratio for each ink key 1100 based on the plate making data (step S1). Next, the control unit 11 specifies an ink key opening setting value for each ink key 1100 based on the pattern area ratio calculated in the process of step S1 and the ink key opening characteristic data 121 stored in the storage unit 12 ( Step S2). Next, the control unit 11 acquires the correction value data 122 for each ink key 1100, and acquires the preset value by adding the correction value data 122 to the ink key opening setting value specified in the process of step S2 (step S3).

  Next, the control unit 11 transmits test printing start instruction information including ink key opening degree control information indicating the preset value of each ink key 1100 acquired in the process of step S3 to the printing press P (step S4). Thereby, the printing press P controls the ink key opening 1400 of each ink key 1100 according to the preset value indicated by the ink key opening control information included in the received test printing start instruction information, and performs the test printing.

  Next, the operator compares the printed matter that has been trial printed with the printing press P with a color sample that represents a desired color tone. At this time, when the operator determines that the color tone of the printed material matches the desired color tone, the operator performs an OK operation from the operation unit 14. On the other hand, when it is determined that the color tone of the printed material does not match the desired color tone, the key number of the ink key 1100 for changing the ink key opening setting value and the changed ink key opening setting value are input from the operation unit 14. The operator repeats the adjustment of the ink key opening setting value (ink key opening 1400) and the trial printing until the color tone of the printed matter becomes a desired color tone.

  On the other hand, the control unit 11 of the operator terminal 1 stands by after the processing of step S4 until an OK operation by the operator or an instruction to change the ink key opening setting value is input (step S5: NO, step S6: NO). . When it is determined that the ink key opening change instruction has been input (step S6: YES), the control unit 11 sets the ink key opening setting value of the ink key 1100 identified by the input key NO to the input ink key opening. It is changed (set) in accordance with the degree setting value (step S7), and the test printing start instruction information is transmitted again to the printing press P (step S4).

  If it is determined that an OK operation has been input (step S5: YES), the control unit 11 acquires the ink key opening setting value (OK value) of each ink key 1100 when the OK operation has been input ( Step S8). Next, for each ink key 1100, the control unit 11 calculates the difference between the ink key opening setting value specified in step S2 and the ink key opening setting value (OK value) acquired in step S8 as the ink key opening operation amount. (Step S9).

  Next, the control unit 11 determines whether or not the calculated ink key opening operation amount is greater than a predetermined threshold (step S10). Specifically, it is determined whether or not the number of ink keys 1100 whose ink key opening degree operation amount is greater than a predetermined threshold is equal to or greater than a predetermined number. This process is a process for not storing the setting history data 123 when an exceptional adjustment operation of the ink key opening 1400 is performed. For example, if there is a special request from a client who requests a printed matter, such as printing with a darker color than usual, printing will be performed at an ink key opening 1400 larger than usual. When an exceptional adjustment operation is performed, the processing in steps S11 to S13 described later is not performed. Therefore, as the predetermined threshold, a value that can determine whether or not the adjustment operation is exceptional is set. Also, the predetermined number can be arbitrarily set to “1”, half the total number of ink keys, the total number of ink keys, and the like. In addition to the case where the condition of step S10 is satisfied, the process of steps S11 to S13 is also performed when the operator determines that the setting history data 123 should not be stored and inputs a predetermined exclusion operation from the operation unit 14. It may not be performed. By doing so, it is possible to prevent the ink key opening characteristic data 121 and the correction value data 122 from being distorted and updated by an exceptional ink key opening operation amount.

  When it is determined that the ink key opening degree operation amount is greater than the predetermined threshold (step S10: YES), the control unit 11 ends the printing process. On the other hand, when it is determined that the ink key opening degree operation amount is not greater than the predetermined threshold (step S10: NO), the control unit 11 registers the setting history data 123 in the storage unit 12 (step S11). Next, the control unit 11 updates the ink key opening degree characteristic data 121 based on the setting history data 123 stored in the storage unit 12 (step S12). Next, the control unit 11 updates the correction value data 122 based on the setting history data 123 stored in the storage unit 12 (step S13), and ends the printing process.

  As described above, the storage unit 12 of the operator terminal 1 according to the present embodiment stores the ink key opening degree characteristic data 121 for specifying the ink key opening degree setting value according to the pattern area ratio, and for each ink key 1100, Correction value data 122 (an example of “correction data” in the present invention) for correcting the ink key opening setting value specified based on the ink key opening characteristic data 121 is stored. Further, the control unit 11 calculates a pattern area ratio for each ink key 1100, specifies an ink key opening setting value for each ink key 1100, based on the calculated pattern area ratio and the ink key opening characteristic data 121, and sets the ink key 1100. Each time the specified ink key opening setting value is corrected based on the correction value data 122 corresponding to the ink key 1100, and the corrected ink key opening setting value is set for each ink key 1100 as a preset value (“ink key of the present invention”). As an example of “opening preset value”. Further, the control unit 11 sets, for each ink key 1100, the ink key opening setting value specified based on the ink key opening characteristic data 121, and the OK value (when a predetermined print quality is obtained) (in accordance with the present invention). An ink key opening operation amount (an example of “difference value information” in the present invention) indicating a difference value from “an example of“ OK ink key opening setting value ”) is recorded in the storage unit 12, and the storage unit 12 is provided for each ink key 1100. The correction value data 122 is updated on the basis of the ink key opening operation amount stored in.

  According to the operator terminal 1 of the present embodiment, correction is performed based on the ink key opening operation amount that is a difference value between the ink key opening setting value specified based on the ink key opening characteristic data 121 and the OK value for each ink key 1100. The value data 122 is updated. Further, a value obtained by correcting the ink key opening setting value specified based on the pattern area ratio calculated for each ink key 1100 and the ink key opening characteristic data 121 with the correction value data 122 is acquired as a preset value. The ink key opening operation amount indicates the operation amount when the operator changes the ink key opening setting value, and the operation characteristics of the ink key 1100 are reflected. That is, the operation characteristics of each ink key 1100 are reflected in the correction value data 121 and are also reflected in the preset value. Therefore, a preset value reflecting the operation characteristics of each ink key 1100 can be acquired.

  Further, the control unit 11 of the operator terminal 1 accumulates and stores the ink key opening operation amount in the storage unit 12 for each ink key 1100, and the ink key opening operation amount corresponding to at least the latest predetermined number stored in the storage unit 12. Then, the average value of the ink key opening operation amount is calculated, and the correction value data 122 is updated with the calculated average value. This eliminates the feature of the individual ink key opening operation amount caused by causes other than the ink key, and makes it possible to correct the operation caused by the ink key.

  Further, the control unit 11 of the operator terminal 1 does not cause the storage unit 12 to store the ink key opening operation amounts for all the ink keys 1100 when the number of ink keys 1100 whose ink key opening operation amount is greater than the threshold value is greater than or equal to a predetermined number. . As a result, when an operation with the ink key opening operation amount exceeding the threshold is performed for a predetermined number or more of the ink keys 1100, the ink key opening operation amount is not stored in the storage unit 12. Therefore, when an exceptional operation is performed by the operator, it is possible to prevent the correction value data 121 from being updated based on the ink key opening operation amount at that time.

  Heretofore, the description has been made on the assumption that the temperature of the place where the printing press P is installed (specifically, the temperature in the vicinity of the ink key 1100 at the start of test printing or at the time of OK) is almost the same temperature. Actually, even when a printed matter having the same color tone is printed, the OK value changes depending on the temperature of the place. FIG. 10 is a diagram showing the relationship between the temperature and the film thickness of the ink attached to the printed material. FIG. 9 shows that the ink film thickness decreases as the temperature increases. In other words, if the temperature is high, the viscosity of the ink decreases and the ink film thickness decreases, so the operator increases the ink key opening setting value more than usual (when the temperature is at the reference temperature (for example, 24 ° C)) (ink key). It is considered that the OK value is also increased.

  Therefore, the temperature correction data (an example of the “temperature correction data” in the present invention) derived experimentally from the correlation between the temperature and the ink key opening adjustment amount is obtained and stored in the storage unit 12 (the “temperature correction data storage in the present invention”). Stored in an example). And when the control part 11 records an OK value as a part of setting history data 121, it is good also as correcting an OK value by temperature correction data. The temperature correction data is a value for increasing the OK value when the temperature is higher than the reference temperature, and is a value for decreasing the OK value when the temperature is lower than the reference temperature. For example, the temperature correction data can be obtained by the expression “temperature correction data = 0.1 × reference temperature difference value”. As a result, even if printing is performed under different temperatures, an OK value that is estimated to be obtained if printing is performed under the reference temperature is recorded as a part of the setting history data 121. Therefore, the correction value data 122 can be updated with the ink key opening manipulated variable from which the influence due to the difference in temperature is eliminated. The ink key opening degree characteristic data 121 prescribes the pattern area ratio and the ink key opening degree set value when printing at a reference temperature.

  Further, since the ink film thickness is affected not only by the ink key opening 1400 but also by the rotation speed of the ink source roller 1200, if the rotation speed of the ink source roller 1200 is different, even if the pattern area ratio is the same, it is OK. It is necessary to correct the ink key opening setting value. Therefore, the control unit 11 acquires an OK value that eliminates the influence of the rotation speed of the ink base roller 1200 (an OK value estimated to be obtained if printing is performed at a reference rotation speed). It is preferable to calculate a corrected OK value obtained by multiplying the value by a correction coefficient obtained experimentally and record it as a part of the ink key information.

  Further, in the present embodiment, when the number of ink keys 1100 whose ink key opening operation amount is larger than a predetermined threshold is greater than or equal to the predetermined number (step S10: YES), the setting history data 123 is not stored in the storage unit 12. However, the setting history data 123 is not stored in the storage unit 12 only for the ink key 1100 in which the ink key opening operation amount is greater than the predetermined threshold, and the ink key 1100 is not greater than the predetermined threshold. The setting history data 123 may be stored in the storage unit 12.

DESCRIPTION OF SYMBOLS 1 Operator terminal 11 Control part 12 Storage part 121 Ink key opening characteristic data 122 Correction value data 123 Setting history data 13 Display part 14 Operation part 15 Communication part P Printing machine U1-U4 Printing unit 1100 Ink key 1200 Ink original roller 1300 Ink fountain 1400 Ink key opening S Offset rotary printing system

Claims (6)

An ink key opening preset value acquisition device for acquiring ink key opening preset values of a plurality of ink keys for each ink key,
Characteristic data storage means for storing ink key opening characteristic data for specifying an ink key opening setting value according to the pattern area ratio;
Correction data storage means for storing correction data for correcting the ink key opening setting value specified for each ink key based on the ink key opening characteristic data;
A pattern area ratio calculating means for calculating the pattern area ratio for each ink key;
For each ink key, based on the calculated pattern area ratio and the ink key opening characteristic data, an ink key opening specifying means for specifying an ink key opening setting value;
Correction means for correcting the specified ink key opening setting value for each ink key based on the correction data corresponding to the ink key;
Preset value acquisition means for acquiring, as the ink key opening preset value, the corrected ink key opening setting value for each ink key;
For each ink key, difference value information indicating a difference value between an ink key opening setting value specified based on the ink key opening characteristic data and an OK ink key opening setting value when a predetermined print quality is obtained. Difference value recording means for recording in the difference value storage means;
Correction data updating means for updating the correction data stored in the correction data storage means based on the difference value indicated by the difference value information stored in the difference value storage means for each ink key;
An ink key opening degree preset value acquisition device comprising: The ink key opening preset value acquisition device according to claim 1,
The difference value recording means accumulates and records the difference value information in the difference value storage means for each ink key,
The correction data update unit calculates an average value of difference values from at least a predetermined number of difference value information accumulated in the difference value storage unit, and updates the correction data with the calculated average value. Ink key opening preset value acquisition device. The ink key opening degree preset value acquisition device according to claim 1 or 2,
Temperature correction data storage means for storing temperature correction data for correcting the OK ink key opening setting value to a value when printing at a reference temperature according to the temperature at the time of printing;
Further comprising
The characteristic data storage means stores ink key opening characteristic data for specifying an ink key opening setting value according to a pattern area ratio at the reference temperature,
The difference value recording means is, for each ink key, a difference value between the ink key opening setting value specified based on the ink key opening characteristic data and the OK ink key opening setting value corrected by the temperature correction data. The ink key opening preset value acquisition device is characterized in that the difference value information indicating is stored in the difference value storage means. The ink key opening preset value acquisition device according to any one of claims 1 to 3,
The difference value recording means does not store the difference value information in the difference value storage means for at least the corresponding ink key when there is an ink key whose difference value is larger than a threshold value. . Ink key opening preset value acquisition device that acquires ink key opening preset values for multiple ink keys for each ink key, and stores ink key opening characteristic data for specifying ink key opening setting values according to the pattern area ratio And a correction data storage means for storing correction data for correcting an ink key opening setting value specified on the basis of the ink key opening characteristic data for each ink key. The computer included in the preset value acquisition device
A pattern area ratio calculating means for calculating the pattern area ratio for each ink key;
For each ink key, based on the calculated pattern area ratio and the ink key opening characteristic data, an ink key opening specifying means for specifying an ink key opening setting value;
Correction means for correcting the specified ink key opening setting value for each ink key based on the correction data corresponding to the ink key;
Preset value acquisition means for acquiring, as the ink key opening preset value, the corrected ink key opening setting value for each ink key;
For each ink key, difference value information indicating a difference value between an ink key opening setting value specified based on the ink key opening characteristic data and an OK ink key opening setting value when a predetermined print quality is obtained. Difference value recording means for recording in the difference value storage means,
Correction data updating means for updating the correction data stored in the correction data storage means based on the difference value indicated by the difference value information stored in the difference value storage means for each ink key;
Ink key opening preset value acquisition program characterized by functioning as Ink key opening preset value acquisition device that acquires ink key opening preset values for multiple ink keys for each ink key, and stores ink key opening characteristic data for specifying ink key opening setting values according to the pattern area ratio And a correction data storage means for storing correction data for correcting an ink key opening setting value specified on the basis of the ink key opening characteristic data for each ink key. An ink key opening preset value acquisition method executed by a preset value acquisition device,
Calculating the pattern area ratio for each ink key;
For each ink key, based on the calculated pattern area ratio and the ink key opening characteristic data, specifying an ink key opening setting value;
For each ink key, correcting the specified ink key opening setting value based on the correction data corresponding to the ink key;
For each ink key, obtaining the corrected ink key opening setting value as the ink key opening preset value;
For each ink key, difference value information indicating a difference value between an ink key opening setting value specified based on the ink key opening characteristic data and an OK ink key opening setting value when a predetermined print quality is obtained. Recording in the difference value storage means;
Updating the correction data stored in the correction data storage means based on the difference value indicated by the difference value information stored in the difference value storage means for each ink key;
An ink key opening preset value acquisition method comprising:

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