JP2010228146A - Printing speed accelerating device and method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a printing speed accelerating device and a method therefor which can prevent such sudden change in printing speed as to exceed tolerance level of density variation and position variation and which also can reach a predetermined printing speed in a short period of time. <P>SOLUTION: The printing speed accelerating device includes: a memory means which stores an accelerating rate schedule specifying an accelerating rate in accordance with an printing item and its attribute; an accelerating rate schedule reference means which refers to the accelerating rate schedule, stored based on the specifying input of the printing item and its attribute, to obtain an accelerating rate; an accelerating rate specifying means which specifies a printing speed for the printing control unit based on the referred accelerating rate. The method therefor is also provided. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention belongs to the technical field of printing presses. In particular, the present invention relates to a printing speed accelerating apparatus and method capable of increasing the operating speed within a range that does not adversely affect the printing quality at the start of printing in which the printing conditions for good products are adjusted and the operating speed of the printing press is increased.

In a printing machine, it is common to change the printing speed during printing. Until the print item is switched and an appropriate printing condition is set, printing is performed at a lower printing speed in order to reduce the amount of waste paper (defective printed matter) generated. Further, when appropriate printing conditions are set, printing is performed at a printing speed as high as possible in order to improve productivity. However, when the printing speed is changed, the print quality is affected. As the influence on the print quality, there are large density fluctuations in printing and positional fluctuations between colors, folding, and cutting.
The ink supply unit of the printing machine is provided with a mechanism for changing the supply amount following the printing speed. Therefore, the density fluctuation is small in the steady state. However, there is a time delay before the change in the ink supply amount is reflected in the printed matter. This time delay cannot be avoided due to the mechanism of the ink supply unit. Accordingly, there is a density fluctuation in which the ink is insufficient during ascent and the ink is excessive during descending.
Further, a control mechanism for correcting a positional variation is provided for the printing position alignment between the printing units in the printing machine, the folding position alignment of the folding part, and the cutting position alignment of the cutting part. Therefore, the position fluctuation is small in the steady state. However, there is a time delay before the correction of the position variation is reflected on the printed matter. This time delay is caused by the control mechanism and cannot be avoided. Therefore, there is a position fluctuation during the ascending or descending.
When the density fluctuation and position fluctuation exceed the allowable range, the printed matter becomes a defective product. Therefore, it is necessary to avoid a sudden change in printing speed such that the density fluctuation and position fluctuation exceeds the allowable range.
For this purpose, the conventional technology relates to an acceleration control method for a printing press and a printing press with the purpose of enabling the printing speed to be changed without generating waste paper, and misregistration of paper registration, printing density, and cutting position. The above-mentioned registration, print density, and cutting position can be converged and controlled by a shift operation step for performing a shift operation for a limited shift width or shift time that only falls within an allowable range, and feedback control thereof. An invention is known in which a minute speed change operation or a stable speed operation step in which a constant speed operation is performed is alternately repeated to change the speed stepwise to a target speed (Patent Document 1).
However, in this method, the speed change width of the minute speed change is performed on the stairs in order to keep the density and position fluctuation amount within the allowable values. Therefore, it takes time to reach a constant speed for a certain time, and it takes time to complete the speed increase (see FIG. 10). In addition, there is a problem that the density and position fluctuations are within an allowable range during shifting, but are not suitable when a high-quality printed matter is required because of a deviated amount.

JP 2003-48309 A

  The present invention has been made to solve the above problems. An object of the present invention is to provide a printing speed accelerating apparatus and method that can avoid a sudden change in printing speed such that density fluctuations and position fluctuations exceed an allowable range and can reach a predetermined printing speed in a short time. There is.

The printing speed accelerating device according to claim 1 of the present invention is based on a storage means for storing an acceleration rate table in which an acceleration rate is determined in correspondence with a print item and its attribute, and based on a designation input of the print item and its attribute. An acceleration rate reference means for obtaining an acceleration rate by referring to the stored acceleration rate table; and an acceleration rate setting means for setting an acceleration rate of a printing speed for a printing press controller based on the referenced acceleration rate. It is what you do.
A printing speed acceleration device according to a second aspect of the present invention is a printing speed acceleration device according to the first aspect, wherein the printing speed acceleration device collects the printing speed when the printing machine control unit performs the acceleration by manual operation. A speed collecting means, a speed increasing rate calculating means for calculating a speed increasing rate based on the collected printing speed, a print item, its attribute, and the speed increasing rate in association with each other based on a designation input of the print item and its attribute. A speed increasing rate registering means for registering in the speed rate table is provided.
A printing speed acceleration apparatus according to claim 3 of the present invention is the printing speed acceleration apparatus according to claim 1 or 2, wherein the attribute is required print quality.
A printing speed acceleration device according to a fourth aspect of the present invention is the printing speed acceleration device according to any one of the first to third aspects, wherein the attribute is a pattern area ratio. Speed device.
A printing speed acceleration device according to a fifth aspect of the present invention is the printing speed acceleration device according to any one of the first to fourth aspects, wherein the attribute is a paper brand. apparatus.
According to a sixth aspect of the present invention, there is provided a printing speed accelerating method for storing a accelerating rate table in which an accelerating rate is determined according to a printing item and its attribute, and for specifying and inputting the printing item and its attribute. A speed increase rate reference process for obtaining a speed increase rate by referring to the stored speed increase rate table, and a speed increase rate setting step for setting a print speed increase rate for the printing press controller based on the referred speed increase rate; A method for increasing printing speed, comprising:

According to the printing speed accelerating device of the first aspect of the present invention, the storage means stores the acceleration rate table in which the acceleration rate is determined in correspondence with the print item and its attribute, and the acceleration rate reference means stores the print item and its Based on the attribute designation input, the stored acceleration rate table is referred to obtain the acceleration rate, and the acceleration rate setting unit sets the acceleration rate of the printing speed for the printing press controller based on the referred acceleration rate. Is done. That is, an optimal rate of acceleration can be set in advance corresponding to the print item and its attribute. Accordingly, there is provided a printing speed accelerating device that can avoid a sudden change in printing speed such that density fluctuations and position fluctuations exceed an allowable range and can reach a predetermined printing speed in a short time.
According to the printing speed accelerating device according to claim 2 of the present invention, when the printing speed accelerating device according to claim 1 is manually accelerated in the printing press controller by the printing speed collecting means. Printing speed is collected, and the acceleration rate calculating means calculates the acceleration rate based on the collected printing speed. The acceleration rate registering means calculates the printing item and its attribute and the attribute based on the designation input of the print item and its attribute. The speed increase rate is associated and registered in the speed increase rate table. Therefore, it is possible to automatically register the acceleration rate as the actual value for the print item and its attribute that do not exist in the acceleration rate table.
According to the printing speed accelerating device according to claim 3 of the present invention, in the printing speed accelerating device according to claim 1 or 2, the attribute is required print quality. Accordingly, a speed increase rate corresponding to the required print quality is set.
Moreover, according to the printing speed acceleration apparatus which concerns on Claim 4 of this invention In the printing speed acceleration apparatus which concerns on any one of Claims 1-3, the said attribute is a pattern area rate. Therefore, the rate of increase according to the pattern area rate is set.
According to the printing speed accelerating device according to claim 5 of the present invention, in the printing speed accelerating device according to any one of claims 1 to 4, the attribute is a paper brand. Therefore, the rate of increase according to the paper brand is set.
According to the printing speed accelerating method of claim 6 of the present invention, the acceleration rate table in which the acceleration rate is determined corresponding to the print item and its attribute is stored in the storage process, and the print item is determined in the acceleration rate reference process. The acceleration rate table is obtained by referring to the stored acceleration rate table based on the designated input of the attribute and the attribute, and the acceleration rate of the printing speed for the printing press control unit based on the referred acceleration rate in the acceleration rate setting process Is set. That is, an optimal rate of acceleration can be set in advance corresponding to the print item and its attribute. Therefore, there is provided a printing speed increasing method capable of avoiding a sudden change in printing speed such that density fluctuations and position fluctuations exceed an allowable range, and reaching a predetermined printing speed in a short time.

It is explanatory drawing which shows an example of a structure of the printing speed acceleration apparatus of this invention, and its periphery. It is a figure which shows an example of a structure of the printing machine with which the printing speed acceleration apparatus and method of this invention are applied. It is a block diagram which shows an example of a structure in the printing speed acceleration apparatus of this invention. It is a figure which shows an example (the 1) of an acceleration rate table | surface. It is a figure which shows an example (the 2) of an acceleration rate table. It is a figure which shows an example (the 3) of an acceleration rate table. It is a figure which shows an example of the flow of the operation | movement which sets the acceleration rate in the printing speed acceleration apparatus of this invention. It is a figure which shows an example of the flow of operation | movement which registers the acceleration rate in the printing speed acceleration apparatus of this invention. It is a figure which shows an example of the flow of the operation | movement which sets and registers the acceleration rate in the printing speed acceleration apparatus of this invention. It is explanatory drawing which showed the comparison of this invention and a prior art with the graph regarding elapsed time and printing speed.

Next, embodiments of the present invention will be described with reference to the drawings. First, the configuration of the printing speed increasing device of the present invention and its periphery will be described. An example of the configuration is shown in FIG.
The printing speed accelerating device of the present invention can be realized by software and hardware of a data processing device such as a PLC (Plogramable Logic Controller) or a personal computer system. The printing speed increasing device uses a PLC in the example shown in FIG. The display with a touch panel shown in FIG. 1 is a man-machine interface in the PLC. The operator performs designation input (print item and its attributes, etc.) to the print speed increasing device on the touch panel display. The printing speed accelerating device displays data of designated contents (printing items and their attributes, etc.) and operation contents (acceleration rate, etc.) on a display with a touch panel.

The printing speed accelerating device inputs a signal indicating the state in a production line for rotary offset printing, that is, a production line including a printing machine, a folding machine, a conveyor, a stacker bundler, and the like. The signal is shown as an input signal in FIG. The input signal includes, for example, a start signal for starting printing of a printed material that becomes a product (intermediate product) after setting of printing conditions for printing a non-defective printed material in printing of a new item, printing speed during printing (rotation speed of the printing plate) ) Etc. The printing speed accelerating device performs an operation for calculating a printing speed accelerating rate based on the input signal.
Further, the printing speed increasing device outputs a signal for controlling the operation of the printing press, that is, an output signal shown in FIG. The output signal is, for example, an acceleration rate setting signal for setting an acceleration rate of the printing speed for the printing press.

An example of the configuration of a printing machine to which the printing speed increasing device of the present invention is applied is shown in FIG. In FIG. 2, an offset rotary printing press is shown. The web (printing paper) unwound from the winding body in the paper feeding unit is fed to the printing unit. In the printing section, overprinting is performed with four colors (YMCK) ink on both sides of the web. Thereafter, the web passes through a dryer, and ink drying (heat setting) of the printing surface is performed. The web that has been ink-dried in the paper discharge unit of the web offset press is discharged. At this time, a web guide controller (not shown) of the discharge unit controls the position of the web in the left-right direction (perpendicular to the transfer direction). This control is performed so that the web is properly folded in the next folding machine. The web is folded in a folding machine and further cut into a signature. The signatures are individually separated by an impeller and placed on a conveyor so as to be equally spaced. A stacker bundler is present on the extension of the conveyor. In the stacker bundler, signatures are bundled into a predetermined number. The bundle is transferred to a pallet (not shown) and stacked on the pallet.
As described above, the production line for rotary offset printing has a line configuration including a printing machine, a folding machine, a conveyor, a stacker bundler, and the like. The influence on the print quality includes density fluctuations in printing, inter-color, folding. The position fluctuation in cutting is a big thing.

The printing speed increasing device and the surrounding configuration have been described. Next, the configuration of the printing speed increasing device of the present invention will be described. An example of the configuration of the printing speed increasing device of the present invention is shown in FIG. In FIG. 3, 100 is a printing speed acceleration device (main body), 101 is a display unit, 102 is an input unit, and 200 is a printing press control unit. In the printing speed increasing device 100, 10 is a storage unit, and 20 is a calculation unit. In the storage unit 10, 11 is a print item, 12 is an attribute value, 13 is a collected printing speed, 14 is an acceleration rate table, 15 is an acceleration rate, and 16 is display data. In the calculation unit 20, reference numeral 21 denotes an acceleration rate reference means, 22 denotes an acceleration rate setting means, 23 denotes a printing speed collection means, 24 denotes an acceleration rate calculation means, 25 denotes an acceleration rate registration means, and 26 denotes a display means.
As described above, the printing speed acceleration device (main body) 100 can be realized by software and hardware of a data processing device such as a PLC or a personal computer system.
The display unit 101 is a display unit of the printing speed increasing device 100 such as a liquid crystal display. The display unit 101 displays (visualizes) the display data generated by the display unit 24 as an image.
The input unit 102 is an input unit of the print speed increasing device 100 such as a touch panel and a keyboard. The input unit 102 and the display unit 101 form a man-machine interface of the printing speed increasing device 100.
The printing press control unit 200 is a control unit of the printing press (offset rotary printing press) shown in FIGS. The printed matter counting apparatus can control the printing press via the printing press control unit 200. For example, the printing press is indirectly controlled by setting a printing speed increase rate to the printing press control unit 200.

The printing speed increasing apparatus 100 includes a storage unit 10 and a calculation unit 20. The storage unit 10 is a part for storing data, and specifically stores a print item 11, an attribute value 12, an acceleration rate 13, an acceleration rate table 14, a collected printing speed 15, and display data 16.
The print item 11 (if the print item is regarded as an attribute, the print item 11 means its value (attribute value)) is a name given to the print product. There are various ways of naming. For example, the print type such as “flyer”, “brochure”, “booklet”, “card”, etc. can be used as the name. Further, in the “flyer”, a store such as “XX Super”, “ΔΔ Store”, “XX Store”, etc. can be named. In addition, in “ΔΔ store”, sales such as “term sale”, “weekly sale”, and the like can be named. In addition, as a unit (lot) for performing a series of printing with the printing press, a name of a production number unit such as “ΔΔ store end-of-store sale” lot number 1001 can be used. The print item 11 may have a fine name in units of production numbers, but the basic printing items such as the paper type, ink type, folding method, etc. used are the same, and only the specific contents of printing (character pattern) are different. The same easily understandable name. The present invention is not limited to the method of naming the printed item.

  The attribute value 12 is an attribute value related to the print item 11. When the print item is the same, it is necessary to further distinguish the attribute value 12. For example, when the print item 11 is “ΔΔ store”, “weekly sale” can be used as the attribute value 12. The attribute value 12 is used to express the contents when the above-mentioned basic printing matters are the same and the specific printing contents are different. For example, when the required print quality is an attribute, attribute values are determined and used as S, A, B, C, and D. Further, when the pattern area ratio is an attribute, attribute values are determined and used such as 5%, 10%, 15%, 20%, 30%, 40%, and 50%. Also, when the paper brand is an attribute, attribute values are determined and used, such as high-quality paper A, high-quality paper B, coated paper C, and coated paper D.

The rate of acceleration 13 is the degree when the printing speed is increased, that is, the acceleration. In general, printing is performed at a slower printing speed until the amount of waste paper (defective printed matter) is reduced until the print item is switched and an appropriate printing condition is set. Thereafter, when appropriate printing conditions are set, printing is performed at a printing speed as high as possible in order to improve productivity. Here, the speed increase rate 13 is a speed increase rate applied at that time. As for the speed increase rate 13, a sufficiently good print quality can be obtained at a speed increase rate of 12 m / min ² for a print item having a normal required quality (density variation 0.1, position variation 100 μm). However, the required quality differs depending on the printing item, the printing conditions (paper, ink, fountain solution) are different, and the accuracy and performance of the printing machine are also different depending on the printing machine. Therefore, it is desirable to determine the speed increase rate 13 by a demonstration test in each printing press. The determined conditions are stored in the storage unit 10 as the acceleration rate table 14. With respect to repeat print items and similar print items, the speed increase rate can be obtained with reference to the speed increase rate table 14.

The acceleration rate table 14 is a table in which the acceleration rate is determined according to the print item and its attribute. An example of the speed increase rate table is shown in FIGS. In FIG. 4, two items of quality level (required quality) and average area ratio are set as attributes for each of items A, B, and C as print items, and a rate of acceleration is set for each. . That is, the item A has a quality level S, an average area rate of 25%, and a speed increase rate of 8 m / min ² . Further, the material B is the average area ratio 25% quality level A, the speed increasing rate is 10 m / min ^2. The item C has a quality level C and an average area rate of 25%, and the rate of speed increase is 12 m / min ² . Thus, when the quality level (required quality) is high, the speed increase rate is large, and when the quality level is low, the speed increase rate is small.

Similarly, in FIG. 5, two items of a paper brand and a paper amount are set as attributes for each of the items A, B, and C as print items, and an acceleration rate is set for each. That is, the item A has a paper brand of alpha and a paper amount of 50, and its rate of increase is 12 m / min ² . The item B has a paper brand of alpha and a paper weight of 75, and the rate of increase is 12 m / min ² . Item B has a paper brand of alpha and a paper weight of 100, and its rate of increase is 12 m / min ² . As described above, when the paper brand is alpha, the rate of increase is constant regardless of the amount of paper.
The paper amount is a unit of the weight of the printing paper, and has the same meaning as the kilo continuous amount here. That is, 1000 sheets of all sizes are taken as one line, and the weight is displayed in kg (kilogram). The larger the kilo number, the thicker the paper and the thinner the paper.

In FIG. 6, three attribute values are set for the average area ratio that is an attribute for one item A as a print item, and a rate of acceleration is set for each. That is, when the average area ratio of the material A is 5%, the speed increasing rate is 5 m / min ^2. Further, when the average area ratio of the item A is 30%, the speed increase rate is 12 m / min ² . Further, when the average area ratio of the item A is 75%, the speed increasing rate is 12 m / min ² . Thus, even in the same item A, the rate of increase in speed varies depending on the average area rate. When the average area rate is small, for example, 5%, the rate of increase in speed needs to be sufficiently small.
It is preferable to express the rate-of-acceleration rate table 14 as a relation in a relational database. At that time, the print item is also an attribute, and the attribute values are the item A, the item B, and the item C. Moreover, the rate-of-accumulation rate table shown as an example in FIGS. 4 to 6 shows the relation as a table. In addition, when an operator designates and inputs a plurality of attribute values, the corresponding acceleration rate can be searched from the database using all the attribute values as search conditions.

The collected printing speed 15 is a data group of printing speeds collected by the printing speed collecting unit 23 via the printing machine control unit 200 when the operator performs a manual operation in the printing machine control unit 200 to increase the printing speed. is there. That is, the collected printing speed 15 is composed of a plurality of printing speeds collected at a predetermined interval for a predetermined period. Based on the collected printing speed 15, the acceleration rate calculating means 24 calculates the acceleration rate.
The display data 16 is data to be displayed on the display unit 101. In other words, the display unit 101 displays the data written in the display data 18 by the display means 28.

Here, the average area ratio will be described. The average area ratio is an average value of the pattern area ratios of all regions in all printing plates used in a plurality of colors. The pattern area ratio is a value representing the area ratio of the pattern portion (ink-implanted portion) as a percentage (%) for each adjustment region of each of the plurality of ink keys for adjusting the ink supply amount distribution. Therefore, the average value of the pattern area ratio given for each adjustment area of the ink key is calculated for each printing plate, and the average value of all the printing plates is calculated based on the average value calculated for each printing plate. What is calculated is the average area ratio. In the example of the offset printing machine shown in FIG. 2, the average area ratio is the average value of the pattern area ratios of the entire area in the eight printing plates if four-color printing is performed on the front and back surfaces.
As a method for obtaining the pattern area ratio, a method of measuring the printing plate in the process of making the printing plate (pressing plate process) and the original data when creating the printing plate, for example, raster scan data (image data of the printing plate) The method of calculating from is well known.

Returning to FIG. 3, the description will be continued. The calculation unit 20 is a part that performs data processing (input / output, calculation, etc.) on the input data, the data stored in the storage unit 10, and the like. A speed rate setting unit 22, a printing speed collecting unit 23, a speed increase rate calculating unit 24, a speed increase rate registering unit 25, and a display unit 26 are provided.
The acceleration rate reference means 21 obtains the acceleration rate 14 by referring to the acceleration rate table 13 stored in advance based on the print item 11 specified by the operator and stored in the storage unit 10 and the attribute value 12 thereof. . For example, when the operator designates the print item as item B, the quality level (required quality) as A, and the average area ratio as 25%, the speed increase rate table shown in FIG. 4 is referred to and the speed increase rate is 10 m / min ^2. It is obtained by the acceleration rate reference means 21. Also, the operator Material B printing material, alpha quality paper brand, reference designation input to the FIG speed-up ratio of 5 to be referenced speed increasing ratio table shown 12m / min ² is speed increasing ratio as the sheet basis weight 75 means 21 Obtained by. When the operator inputs the print item as item A and the average area ratio as 30%, the speed increase rate table shown in FIG. 6 is referred to and a speed increase rate of 12 m / min ² is obtained. When the acceleration rate table 13 is expressed as the relation described above, the acceleration rate reference means 21 has the same function as a database management means (database management system) for the database of the relation.

The acceleration rate setting means 22 sets the acceleration rate 14 of the printing speed for the printing press controller 200 based on the referenced acceleration rate 14. For example, the speed increase rate setting means 22 outputs a signal for setting the speed increase rate 14 as an output signal shown in FIG. 1, and the printing press control unit 200 inputs the output signal, and the speed increase rate 14 is set to the speed increase rate in the printing press. Store as a set value.
This speed increase rate 14 is the maximum speed increase rate at which the operation speed can be increased within a range that does not adversely affect the print quality at the start of printing in which the quality printing conditions are adjusted and the operation speed of the printing press is increased. Therefore, when the operator inputs an instruction to increase the operation speed of the printing press at the start of printing, the printing press control unit 200 makes the actual speed increase rate of the printing press coincide with the speed increase rate 14. Control the printing press. Note that the printing speed when adjusting the non-defective printing conditions (adjusted printing speed) and the printing speed when performing steady operation (steady printing speed) are determined separately. Accordingly, when the printing speed is increased based on the acceleration rate 14 and the printing speed reaches the steady printing speed from the adjusted printing speed, the printing press controller 200 automatically stops increasing the printing speed and at the steady printing speed. Print.

The printing speed collecting unit 23 collects the printing speed when the printing machine control unit 200 performs the ascending speed manually. The printing speed is collected at a predetermined time interval (for example, every 5 seconds). The printing speed collecting unit 23 stores the collected printing speed as the collected printing speed 15 in the storage unit 10. The collected printing speed 15 is a data file of a plurality of collected printing speeds.
The purpose of collecting the printing speed by the printing speed collecting means 23 is to enable automatic registration of the acceleration rate as the actual value for the print item and its attribute that do not exist in the acceleration rate table. Operator is when printing of a new print material that does not exist in the speed increasing rate table, the underlying speed increasing ratio (e.g., 12m / min ^2), or the operator based on the attribute values of the printing material is predicted from the experience Start printing by applying the acceleration rate. During printing, the operator checks the print quality (density and position), and if there is no problem, performs an operation of increasing the speed increase rate little by little. If there are some problems, an operation for slightly decreasing the rate of acceleration is performed. If the problem is large, the acceleration is temporarily stopped and a constant printing speed is maintained for a certain time. By repeating such an operation, the printing press can be manually brought to a steady printing speed.

  The acceleration rate calculating means 24 calculates the acceleration rate based on the collected printing speed. The calculation of the acceleration rate is performed based on the collected printing speed 15 collected from the time when the acceleration is started to the time when the steady printing speed is reached. The basic rate of acceleration is calculated by calculating the difference between adjacent printing speeds over time, calculating the average of the differences, and dividing the average by a predetermined time interval (sampling time). It is performed by the method of obtaining. However, when a serious problem occurs in the print quality, the calculation is performed by excluding the print speed collected in the time zone involved in the occurrence. This exclusion process can be performed manually by the operator based on the memory. Moreover, if it is a printing machine to which the printed matter automatic inspection apparatus is applied, it can be automatically performed based on the output signal of the inspection result by the printed matter automatic inspection apparatus.

The acceleration rate registration unit 25 registers the print item, its attribute, and the acceleration rate in association with the acceleration rate table 14 based on the designation input of the print item and its attribute. Needless to say, the operator designates and inputs a print item and its attribute from the input unit 102 to the print speed increasing device 100 before the registration (see FIGS. 8 and 9 described later).
The display unit 26 stores (writes) data to be displayed on the display unit 101 as display data 16 in the storage unit 10. The stored display data 16 is displayed by the display unit 101.

The configuration has been described above. Next, the operation of the printing speed increasing device of the present invention will be described. First, the operation for setting the rate of acceleration will be described. FIG. 7 shows an example of an operation flow for setting the acceleration rate in the printing speed acceleration apparatus of the present invention.
First, in step S1 (print item input) in FIG. 7, the display unit 26 writes screen data for inputting a print item into the display data 16. The display unit 101 displays a screen for inputting print items. The operator inputs a print item from the input unit 102 while looking at the display unit 101. An input unit (not shown) of the calculation unit 20 stores the input print item as the print item 11 in the storage unit 10.
Next, in step S <b> 2 (attribute value input), the display unit 26 writes screen data for inputting the attribute value in the display data 16. The display unit 101 displays a screen for inputting attribute values. The worker inputs an attribute value from the input unit 102 while looking at the display unit 101. The input attribute value is stored as the attribute value 12 in the storage unit 10 of the printing speed increasing device 100.
Next, in step S3 (refer to the acceleration rate table), the acceleration rate reference means 21 is based on the designation input of the print item 11 and the attribute value 12 stored in the storage unit 10, and the ascending rate stored in the storage unit 10 is stored. The speed increase rate is obtained with reference to the speed rate table 13. The acceleration rate reference means 21 stores the acceleration rate as the acceleration rate 14 in the storage unit 10.
Next, in step S4 (acceleration rate setting), the acceleration rate setting means 22 sets the acceleration rate of the printing speed for the printing press control unit 200 based on the acceleration rate 14 stored in the storage unit 10.
After this setting, as described above, when the operator inputs an instruction to increase the operating speed of the printing press at the start of printing to increase the operating speed of the printing press after adjusting the non-defective printing conditions. The printing press control unit 200 controls the printing press so that the actual speed increase rate in the printing press matches the speed increase rate 14. When the printing speed is increased and the printing speed reaches the steady printing speed from the adjusted printing speed, the printing press controller 200 automatically stops increasing the printing speed and performs printing at the steady printing speed.

Next, an operation for registering the rate of acceleration will be described. FIG. 8 shows an example of an operation flow for registering the acceleration rate in the printing speed acceleration device of the present invention.
First, step S101 (input print item) in FIG. 8 is the same as step S1 in FIG.
Next, step S102 (attribute value input) is the same as step S2 in FIG.
Next, in step S103 (printing speed collection), when the operator manually increases the printing speed at the printing press controller 200 at the start of printing, the printing speed collecting unit 23 collects the printing speed at that time. The printing speed collection unit 23 stores the collected printing speed as the collected printing speed 15 in the storage unit 10. Next, in step S104 (acceleration rate calculation), the acceleration rate calculation unit 24 calculates the acceleration rate 13 based on the collected printing speed. Is calculated.
Next, in step S105 (acceleration rate registration), the acceleration rate registration means 25 associates the print item with its attribute and the acceleration rate 13 based on the designation input of the print item 11 and its attribute value 12, and displays it in the acceleration rate table 14. sign up.

Next, an operation for setting and registering the rate of acceleration in a series of flows will be described. FIG. 9 shows an example of an operation flow for setting and registering the acceleration rate in the printing speed acceleration device of the present invention.
First, step S201 (print item input) in FIG. 9 is the same as step S1 in FIG.
Next, step S202 (attribute value input) is the same as step S2 in FIG.
Next, in step S203 (see the acceleration rate table), the acceleration rate reference means 21 determines the ascending rate stored in the storage unit 10 based on the designation input of the print item 11 and its attribute value 12 stored in the storage unit 10. Refer to the rate table 13.
Next, in step S204 (presence / absence of registered data), if the rate of increase of the print item 11 and its attribute value 12 is registered in the rate of increase rate table 13, the rate of increase rate reference means 21 obtains the rate of increase by referring to it. Then, the process proceeds to step S205. On the other hand, if it is not registered in the acceleration rate table 13, the process proceeds to step S206.
Next, step S205 (speed increase rate setting) is the same as step S4 in FIG.
Next, step S206 (printing speed collection) is the same as step S103 in FIG.
Next, in step S207 (acceleration rate calculation), the acceleration rate calculation means 24 calculates the acceleration rate based on the collected printing speed. The calculated acceleration rate is stored in the storage means 10 as the acceleration rate 14. The display means 26 displays the acceleration rate 14 and writes the screen data to be registered in the display data 16. The display unit 101 displays the screen.
Next, in step S208 (registration instruction presence / absence), the operator confirms the acceleration rate 14 displayed on the display unit 101, and considers the progress of manual acceleration when acquiring the rate 14 from the input unit 102. Either registration instruction (with registration instruction) or cancel (no registration instruction) is input. When the input of “registration instruction exists” is performed, the process proceeds to step S209, and when the input of “no registration instruction” is performed, the process is terminated without registration.
Next, step S209 (acceleration rate registration) is the same as step S105 in FIG.
In step S208, when a serious problem occurs in the print quality, the above-described process is performed by performing a manual operation for excluding the print speed collected in the time zone involved in the occurrence and performing the acceleration rate calculation again. In addition to the above.

  It can be used in the printing industry. The present invention is not limited to offset rotary printing, and can be used in printing in which density fluctuation and position fluctuation at the time of speed increase become a problem.

100 Printed matter counting device (main unit)
DESCRIPTION OF SYMBOLS 101 Display part 102 Input part 200 Printing machine control part 10 Memory | storage part 20 Calculation part 11 Print item 12 Attribute value 13 Collected printing speed 14 Acceleration rate table 15 Acceleration rate 16 Display data 21 Acceleration rate reference means 22 Acceleration rate setting means 23 Printing speed Collection means 24 Speed increase rate calculation means 25 Speed increase rate registration means 26 Display means

Claims (6)

Storage means for storing an acceleration rate table in which an acceleration rate is determined according to the print item and its attribute, and an ascending rate to obtain the acceleration rate with reference to the stored acceleration rate table based on the designated input of the print item and its attribute A printing speed accelerating device comprising speed ratio reference means and acceleration rate setting means for setting an acceleration rate of a printing speed for a printing press controller based on the referenced acceleration rate. The printing speed accelerating device according to claim 1, wherein a printing speed collecting unit that collects a printing speed when the printing machine control unit performs a manual acceleration in the printing press controller, and a rate of acceleration based on the collected printing speed. A rate-of-accumulation rate calculation means for calculating, and a rate-of-accumulation rate registration means for registering the print item, its attribute and the rate of acceleration in association with the rate-of-accumulation rate table based on a designated input of the print item and its attribute And a printing speed acceleration device. 3. The printing speed accelerating apparatus according to claim 1, wherein the attribute is a required printing quality. The printing speed acceleration device according to claim 1, wherein the attribute is a pattern area ratio. 5. The printing speed acceleration device according to claim 1, wherein the attribute is a paper brand. A storage process for storing an acceleration rate table in which an acceleration rate is determined corresponding to the print item and its attribute, and an ascending rate to obtain the acceleration rate by referring to the stored acceleration rate table based on the designated input of the print item and its attribute A printing speed acceleration method comprising: a speed ratio reference process; and an acceleration rate setting process for setting an acceleration rate of a printing speed for a printing press controller based on the referenced acceleration rate.

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