CN114559736A

CN114559736A - Registration control system

Info

Publication number: CN114559736A
Application number: CN202111232477.9A
Authority: CN
Inventors: 平山大介
Original assignee: Sumitomo Heavy Industries Ltd
Current assignee: Sumitomo Heavy Industries Ltd
Priority date: 2020-11-27
Filing date: 2021-10-22
Publication date: 2022-05-31
Also published as: TW202220850A; JP7476084B2; KR20220074726A; JP2022085529A

Abstract

An object of the present invention is to provide a registration control system capable of suppressing the number of man-hours for registration adjustment. A registration control system (20) according to an embodiment of the present invention controls registration adjustment of a printing unit (10) of a multicolor printing system, and includes: a machine-side control unit (40) which is a stationary control panel for setting production conditions of the printing unit (10) and acquires registration information relating to registration of the printing unit (10); and a portable control unit (42) capable of acquiring and displaying registration information from the machine-side control unit (40), wherein the portable control unit (42) is configured to be capable of operating the machine-side control unit (40).

Description

Registration control system

The present application claims priority based on japanese patent application No. 2020-197266, which was filed on day 27/11/2020. The entire contents of this japanese application are incorporated by reference into this specification.

Technical Field

The invention relates to a registration control system.

Background

A printing unit that manages registration deviation using a registration mark is known. Patent document 1 describes a printer including a printing unit having a registration mark detection device. In the web rotary press, since the paper path length between the printing units of the respective colors varies due to the influence of tension or drying, and the registration varies, the printing units operate while adjusting the registration variation. For example, the registration deviation amount is calculated by detecting a registration mark previously marked at an end portion in the width direction of a web of paper, film, or the like, and the registration deviation can be adjusted by an alignment adjustment device provided in the printing unit.

Patent document 1: japanese laid-open patent publication No. 2007-021743

The present inventors have studied a registration control system of a printing apparatus having a plurality of printing units, and as a result, have obtained the following findings. For example, in order to perform registration adjustment for adjusting registration deviation of each printing unit of the printing apparatus, it is conceivable to use a fixed operation panel provided at a position distant from the printing unit. The registration adjustment is performed by operating a registration adjustment device such as a registration roller provided in the printing unit, and the fixed operation panel has a function of displaying a waveform indicating the quality of the registration.

Therefore, after the operator operates the registration adjusting device of the printing unit to perform the adjustment, the operator cannot confirm the quality of the registration, and therefore, the operator needs to move to the fixed operation panel and confirm the quality of the registration by the fixed operation panel based on the waveform display. This adjustment and confirmation operation needs to be repeatedly performed in each printing unit. In this case, since the entire printing apparatus is long, the moving path of the operator is long when the fixed operation panel and the registration adjustment apparatus reciprocate, and the number of adjustment steps increases.

Therefore, the printer described in patent document 1 has a problem in that it is expected to suppress the number of steps for the registration adjustment.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object thereof is to provide a registration control system capable of suppressing the number of steps for registration adjustment.

In order to solve the above-described problems, a registration control system according to an embodiment of the present invention is a registration control system that controls registration adjustment of a printing unit of a multicolor printing system, and includes: a machine-side control unit that is a stationary control panel for setting production conditions of a printing unit and acquires registration information related to registration of the printing unit; and a portable control unit capable of acquiring and displaying registration information from the machine-side control unit. The portable control unit is configured to be capable of operating the machine-side control unit.

In addition, any combination of the above, or an embodiment in which constituent elements or expressions of the present invention are replaced with each other between a method, an apparatus, a program, a temporary or non-temporary storage medium storing the program, a system, or the like is also effective as an embodiment of the present invention.

According to one embodiment of the present invention, a registration control system capable of suppressing the number of man-hours for registration adjustment can be provided.

Drawings

Fig. 1 is a configuration diagram of a multicolor printing system including a registration control system according to an embodiment.

Fig. 2 is a block diagram showing the function and structure of the registration control system of fig. 1.

Fig. 3 (a) and (b) are graphs showing examples of detection results of the 1 st registration mark detecting unit and the 2 nd registration mark detecting unit, respectively.

Fig. 4 is a graph showing an example of a registration error waveform of the registration control system of fig. 1.

Fig. 5 is a schematic diagram showing an example of display of the portable control unit of fig. 1.

Fig. 6 is a schematic diagram showing an example of display of the portable control unit of fig. 1.

Fig. 7 is a schematic diagram showing an example of display of the portable control unit of fig. 1.

Fig. 8 is a configuration diagram of a multicolor printing system including a registration control system according to a modification.

Fig. 9 is a block diagram showing the function and structure of the registration control system of fig. 8.

In the figure: 6A-1 st registration mark, 6B-2 nd registration mark, 10-printing unit, 10A-1 st printing unit, 10B-2 nd printing unit, 20-registration control system, 30-registration detection portion, 40-mechanical side control unit, 42-portable control unit, 100-multicolor printing system.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the drawings. In the embodiment and the modifications, the same or equivalent constituent elements and components are denoted by the same reference numerals, and overlapping description is appropriately omitted. In the drawings, the dimensions of components are shown enlarged or reduced as appropriate for ease of understanding. In the drawings, parts that are not essential to the description of the embodiments are omitted.

In addition, for each component having a common point, the components are distinguished by being marked with a letter such as "1 st or 2 nd" at the head of the name and a letter at the end, and these letters are omitted in the case of the common component. Further, the terms including the ordinal numbers 1, 2, etc. are used to describe various constituent elements, but the terms are used only for the purpose of distinguishing one constituent element from other constituent elements, and are not used to limit the constituent elements.

[ embodiment ]

A registration control system 20 according to an embodiment of the present invention will be described with reference to fig. 1 and 2. Fig. 1 is a diagram showing a configuration of a multicolor printing system 100 provided with a registration control system 20. Fig. 2 is a block diagram showing the function and structure of the registration control system 20. The multicolor printing system 100 includes a 1 st printing unit 10A, a 2 nd printing unit 10B, and a registration control system 20, and is configured to perform predetermined multicolor printing on the web 2. The 1 st printing unit 10A and the 2 nd printing unit 10B are collectively referred to as a printing unit 10. A device in which a plurality of printing units 10 are connected may be referred to as a printing device.

The 1 st printing unit 10A and the 2 nd printing unit 10B each include a plate cylinder 11, an impression cylinder 12, and a unit control unit 14. The web 2 is guided along a predetermined conveyance path by the guide roller 4, and is pressed against the plate cylinder 11 by the impression cylinder 12. A pattern of a color corresponding to the plate cylinder 11 and registration marks are printed on the web 2. A 1 st register mark 6A (not shown in fig. 1) is printed in the 1 st printing unit 10A, and a 2 nd register mark 6B (not shown in fig. 1) is printed in the 2 nd printing unit 10B. The web 2 for which the multicolor printing system 100 is directed may be a web having various levels of light transmission. For example, web 2 is a transparent, translucent or opaque web.

The unit control section 14 changes various adjustment parameters of the printing unit 10 under the control of the machine-side control unit 40 and the portable control unit 42. In particular, the 1 st printing unit 10A and the 2 nd printing unit 10B each include a doctor blade 52 for scraping off excess ink on the surface of the plate cylinder 11 and a blade adjustment portion 54 for adjusting the position and the like of the doctor blade 52. The 2 nd printing unit 10B is provided with a registration adjustment unit 50.

(scraper adjusting part)

The blade adjusting portion 54 is explained with reference to fig. 1. Poor adjustment of the doctor blade 52 can result in the generation of printing stains such as scratches or dirty plates. The blade adjuster 54 is a mechanism for adjusting the doctor blade 52, which is capable of changing the position, angle, pressure, and the like of the doctor blade 52. The blade adjusting portion 54 of the present embodiment changes the position, angle, pressure, and the like of the doctor blade 52 under the control of the machine-side control unit 40 and the portable control unit 42.

(registration adjustment section)

The registration adjustment unit 50 will be described with reference to fig. 1. The registration adjusting unit 50 is a mechanism for adjusting the registration deviation when the registration deviation occurs. The registration adjustment unit 50 of the printing unit 10B of the present embodiment includes a deviation adjustment unit (not shown). The registration adjustment unit 50 automatically executes control of causing a registration error (hereinafter referred to as "waveform detection registration error") detected by an analog waveform (registration signal waveform A, B described later) indicating whether the registration is good or bad to become zero by a registration error compensator (not shown). The deviation adjusting unit adjusts the waveform to detect the deviation between the registration error and the actual registration deviation of the printed matter (hereinafter referred to as "solid registration error"). In the present embodiment, the registration adjusting section 50 has an operation section for adjusting the deviation. The operator 3 can operate the registration adjustment unit 50 to adjust the deviation. By this offset adjustment, the registration can be adjusted with higher accuracy. Hereinafter, the adjustment of the misalignment by the registration adjustment unit 50 will be referred to as "registration adjustment".

The registration control system 20 is described with reference to fig. 1, 2, and 3. The registration control system 20 detects the registration mark printed on the web 2, determines a registration deviation (waveform detection registration error) between the 1 st printing unit 10A and the 2 nd printing unit 10B based on the detection result, and compensates the error by the registration error compensator. Also, the registration control system 20 provides an analog waveform indicating the quality of registration to the operator 3. In the present embodiment, the operator 3 can perform registration adjustment by the registration adjustment unit 50 based on the supplied analog waveform in the vicinity of the 2 nd printing unit 10B.

The registration control system 20 of the present embodiment includes a registration detection unit 30, a machine-side control unit 40, a portable control unit 42, a registration adjustment unit 50, and a doctor adjustment unit 54. The registration detecting section 30 detects the registration mark printed on the web 2, and sends the detection result to the machine side control unit 40. The machine-side control unit 40 is a stationary control panel for setting production conditions of the plurality of printing units 10. The machine-side control unit 40 can communicate with each printing unit 10. The machine-side control unit 40 can acquire and display registration information related to registration from each printing unit 10.

The portable control unit 42 is a removable control panel. The portable control unit 42 is capable of acquiring and displaying registration information from the machine-side control unit 40. The machine-side control unit 40 and the portable control unit 42 will be described later.

The registration detection unit 30 will be described with reference to fig. 2. The registration detection section 30 includes: a 1 st sensor 30A that detects a 1 st registration mark 6A printed on the 1 st printing unit 10A; and a 2 nd sensor 30B for detecting the 2 nd registration mark 6B printed on the 2 nd printing unit 10B.

The 1 st sensor 30a and the 2 nd sensor 30b are disposed with a gap L therebetween. The interval L corresponds to the distance between the 1 st registration mark 6A and the 2 nd registration mark 6B when no registration deviation occurs. The 1 st sensor 30a and the 2 nd sensor 30b are optical sensors, and each include a light source 32, an optical system 33, and a light receiving element 34.

The light source 32 irradiates light toward the web 2. The light source 32 illuminates light, in particular towards the area through which the register marks pass. The light emitted from the light source 32 is irradiated onto the registration mark, reflected by the registration mark, and then condensed by the optical system 33 and received by the light receiving element 34. Alternatively, the light emitted from the light source is transmitted through the web 2, irradiated to the background, reflected by a reflecting plate (not shown), transmitted through the web 2 again, condensed by the optical system 33, and received by the light receiving element 34. The optical system 33 is constructed by a known technique.

The light receiving element 34 is, for example, a photodiode. The light receiving element 34 converts the received light into a current signal and outputs the current signal. The magnitude of the current signal is obtained by integrating the product of the intensity of received light and the photosensitivity for each wavelength. That is, the light receiving element 34 outputs a current signal corresponding to the received light. The current signal is converted into a voltage signal by a current-voltage conversion circuit (not shown), and is output to the machine-side control unit 40.

Referring to fig. 2, the machine-side control unit 40 will be explained. The functional blocks of the machine-side control Unit 40 and the portable control Unit 42 shown in fig. 2 can be realized by a hardware element or a mechanical device represented by a CPU (Central Processing Unit) of a computer, and the software element can be realized by a computer program or the like. Accordingly, those skilled in the art who have access to this description will appreciate that these functional blocks can be implemented in various forms through a combination of hardware and software.

The machine side control unit 40 includes a 1 st registration mark detection section 44a, a 2 nd registration mark detection section 44b, a registration deviation detection section 46, a parameter acquisition section 40a, an operation input section 40b, a display section 40c, a parameter control section 40d, a blade control section 40e, and a communication section 40 f.

First, a mechanism in which the 1 st registration mark detecting unit 44a, the 2 nd registration mark detecting unit 44B, and the registration deviation detecting unit 46 detect the registration deviation between the 1 st printing unit 10A and the 2 nd printing unit 10B based on the detection result of the registration detecting unit 30 will be described.

The 1 st registration mark detecting section 44a detects the 1 st registration mark 6A based on the signal output from the 1 st sensor 30 a. The 1 st registration mark detector 44a compares the signal intensity of the signal output from the 1 st sensor 30a with a predetermined detection threshold, and determines that the 1 st registration mark 6A is detected at this time (the 1 st registration mark 6A has reached the detection area), for example, when the signal intensity exceeds the detection threshold. The 2 nd registration mark detecting section 44B detects the 2 nd registration mark 6B based on the signal output from the 2 nd sensor 30B. The 2 nd registration mark detection section 44b has the same configuration as the 1 st registration mark detection section 44 a.

The registration deviation detecting unit 46 obtains detection results from the 1 st registration mark detecting unit 44a and the 2 nd registration mark detecting unit 44b, respectively. The registration deviation detecting unit 46 determines whether or not a deviation in printing position (i.e., a registration deviation) occurs between the plate cylinders 11 based on the detection results.

Fig. 3 (a) and (b) are graphs each showing an example of the detection results of the 1 st registration mark detecting unit 44a and the 2 nd registration mark detecting unit 44 b. A graph g1 in fig. 3 a shows a signal waveform of the 1 st registration mark 6A detected by the 1 st registration mark detector 44a (hereinafter referred to as "registration signal waveform a"), and a graph g2 in fig. 3B shows a signal waveform of the 2 nd registration mark 6B detected by the 2 nd registration mark detector 44B (hereinafter referred to as "registration signal waveform B").

As described above, since the 1 st sensor 30a and the 2 nd sensor 30B are disposed with the interval L therebetween, and the 1 st registration mark 6A and the 2 nd registration mark 6B are also printed with the interval L therebetween when no registration deviation occurs, the 1 st registration mark 6A and the 2 nd registration mark 6B are detected at substantially the same timing when no registration deviation occurs. Therefore, when the 1 st time t1 at which the 1 st registration mark 6A is detected by the 1 st registration mark detector 44a and the 2 nd time t2 at which the 2 nd registration mark 6B is detected by the 2 nd registration mark detector 44B are substantially the same, the registration deviation detector 46 determines that no registration deviation occurs. On the other hand, when the 1 st timing t1 differs from the 2 nd timing t2, the registration deviation detecting unit 46 determines that a registration deviation occurs in the traveling direction by an amount corresponding to the product of the difference between the 1 st timing t1 and the 2 nd timing t2 and the feed speed of the web 2.

The registration deviation detecting unit 46 detects the magnitude of the registration deviation (hereinafter referred to as "registration error") from the registration signal waveform a and the registration signal waveform B, and generates a registration error waveform indicating a temporal change in the registration error. The graph g3 of fig. 4 is a graph showing an example of a registration error waveform. By displaying the registration error waveform (graph g3), operator 3 is able to confirm the change in registration error substantially in real time.

With reference to fig. 2, another configuration of the machine-side control unit 40 will be described. The parameter acquiring unit 40a acquires the adjustment parameters of each printing unit 10 via the unit control unit 14. The adjustment parameters of the printing unit 10 include the proportional gain of the registration error compensator, the sensitivity levels of the 1 st and 2 nd sensors, and the like. The operation input unit 40b receives an operation input for setting the production conditions of each of the printing units 10 and the multicolor printing system 100. The operation input unit 40B receives operation inputs for displaying the respective waveforms of the registration signal waveform a, the registration signal waveform B, and the registration error waveform of each printing unit 10. The display unit 40c is a liquid crystal display capable of displaying various waveforms such as a registration signal waveform a, a registration signal waveform B, and a registration error waveform.

The parameter control unit 40d controls the adjustment parameters of each printing unit 10 according to the operation of the operation input unit 40 b. The blade control section 40e controls the blade adjusting section 54 according to the operation of the operation input section 40 b. The communication section 40f exchanges information with the portable control unit 42 by wireless communication. The machine-side control unit 40 transmits information on the adjustment parameters of the printing units 10, the registration signal waveform a, the registration signal waveform B, and the registration error waveform of each printing unit 10 to the portable control unit 42 via the communication unit 40 f. The machine-side control unit 40 receives information related to the operation input received by the portable control unit 42 via the communication unit 40 f.

(Portable control unit)

The portable control unit 42 will be described with reference to fig. 2, 5, 6, and 7. Fig. 5, 6, and 7 are schematic diagrams showing an example of the portable control unit 42. The portable control unit 42 is a liquid crystal display with a touch panel, and its display screen changes according to the operation mode. In the screen of the portable control unit 42, an area where the touch operation is accepted is designated as an operation input unit, and an area where a graph and an image are mainly displayed is designated as a display unit. Fig. 5 shows an example of a display screen in the registration adjustment mode. Fig. 6 shows an example of a display screen in the squeegee adjustment mode. Fig. 7 shows an example of a display screen in the parameter adjustment mode.

The portable control unit 42 of the present embodiment includes an operation input unit 42b, a display unit 42d, and a communication unit 42 f. The operation input unit 42b receives an operation input for setting the production conditions of each of the printing units 10 and the multicolor printing system 100. The operation input unit 42b includes a mode selector 42s for selecting an operation mode such as a register adjustment mode, a squeegee adjustment mode, and a parameter adjustment mode.

The portable control unit 42 of the present embodiment can display a waveform generated from the registration information. As shown in fig. 5, the display unit 42d can display the registration signal waveform a (g1) and the registration signal waveform B (g2) of the printing unit 10. As shown in fig. 6, the display unit 42d can display the registration error waveform (g 3). The display content of the display unit 42d is not limited. With this configuration, the operator 3 can check the waveform generated based on the registration information in the vicinity of each printing unit 10, and therefore, the trouble of returning to the machine-side control unit 40 for checking is eliminated, and productivity is improved.

The communication unit 40f of the portable control unit 42 exchanges information with the machine-side control unit 40 by wireless communication. The transmission information is not limited, and in this example, the portable control unit 42 transmits information related to the operation input received by the operation input unit 42b to the machine-side control unit 40 via the communication unit 40 f. In this example, the portable control unit 42 receives information such as the adjustment parameters of the printing units 10, the registration signal waveform a, the registration signal waveform B, and the registration error waveform of each printing unit 10 from the machine-side control unit 40 via the communication unit 40 f. According to this configuration, the operator 3 can acquire information of the machine-side control unit 40 in the vicinity of each printing unit 10 and can transmit operation information, and therefore, the trouble of returning to the machine-side control unit 40 is eliminated, and productivity is improved.

The portable control unit 42 of the present embodiment can remotely operate the machine-side control unit 40. For example, by performing an input operation to the operation input unit 42b of the portable control unit 42, the machine-side control unit 40 can be operated in the same manner as when the input operation is performed to the operation input unit 40b of the machine-side control unit 40. With this configuration, the operator 3 can perform the remote operation while checking the state of each printing unit 10 in the vicinity thereof, and therefore, the trouble of returning to the machine-side control unit 40 for operation is eliminated, and productivity is improved.

The portable control unit 42 of the present embodiment can perform individual adjustment of each printing unit 10 and overall adjustment of the multicolor printing system 100. That is, the portable control unit 42 can remotely perform individual adjustment of each printing unit 10 via the machine-side control unit 40. Also, the portable control unit 42 can remotely perform overall adjustment of the multicolor printing system 100 via the machine-side control unit 40. According to this configuration, the operator 3 can remotely perform the individual adjustment and the overall adjustment while checking the printing state in the vicinity of each printing unit 10, and therefore, the trouble of returning to the machine-side control unit 40 to perform the adjustment can be eliminated, and productivity can be improved.

The portable control unit 42 of the present embodiment can control the posture of the doctor blade 52 of each printing unit 10. When the squeegee adjustment is performed, the portable control unit 42 is switched to the squeegee adjustment mode to display a registration error waveform (g3) (fig. 6). In this state, the operator 3 operates the operation input section 42b of the portable control unit 42 while confirming the printing stains with the naked eye or by a detection mechanism that detects the printing stains in the vicinity of the printing unit 10. Thereby, the blade adjusting portion 54 is controlled to adjust the position, angle, pressure, and the like of the doctor blade 52. In this example, the condition of the doctor blade 52 is indicated by the amplitude of the periodic variation of the registration error waveform (g3) of the display portion 42d, and therefore the operation input portion 42b is operated so as to reduce the amplitude. With this configuration, the operator 3 can perform adjustment while confirming the state of the doctor blade 52 in the vicinity of each printing unit 10, and therefore, the trouble of returning to the machine-side control unit 40 for adjustment is eliminated, and productivity is improved.

The portable control unit 42 of the present embodiment can change the adjustment parameters of each printing unit 10. When the adjustment parameter of the printing unit 10 is changed, the portable control unit 42 is switched to the parameter adjustment mode (fig. 7). As shown in fig. 7, in the parameter adjustment mode, the adjustment parameters of the printing unit 10 received via the communication unit 40f of the machine-side control unit 40 are displayed on the display unit 42 d. The display includes textual information or graphical information. In this mode, an operation input unit 42b for receiving an operation input for changing the adjustment parameter is displayed. In this state, the operator 3 performs an operation input to the operation input unit 42b to change the adjustment parameter. As a result, the adjustment parameters of the printing unit 10 are changed. In other words, the operation input unit 42b in this mode functions as the parameter adjustment change operation unit 42 p. According to this configuration, since the operator 3 can change the adjustment parameters while checking the printing state in the vicinity of each printing unit 10, the operator does not need to return to the machine-side control unit 40 to change the adjustment parameters, and productivity is improved.

The registration adjustment is explained with reference to fig. 5. When the registration adjustment is performed, the portable control unit 42 is switched to the registration adjustment mode (fig. 5). As shown in fig. 5, in the registration adjustment mode, the registration signal waveform a (g1) and the registration signal waveform B (g2) of the printing unit 10 received via the communication unit 40f of the machine-side control unit 40 are displayed on the display unit 42 d. The waveform detection registration error is a difference Δ t in detection timings of the registration marks 6A, 6B, and control for making the waveform detection registration error zero is automatically performed by a registration error compensator. In this state, the operator 3 adjusts the deviation adjusting section of the registration adjusting section 50 so that the deviation between the actual registration error and the waveform detection registration error becomes small while visually confirming the actual registration error from the actual printed matter. According to this configuration, since the operator 3 can operate the registration adjusting unit 50 while checking the deviation in the vicinity of each printing unit 10, the trouble of checking the waveform detection registration error by the machine side control unit 40 is eliminated, and the productivity is improved.

The features of the registration control system 20 according to the present embodiment configured as described above will be described. The registration control system 20 is a registration control system that controls registration adjustment of the printing unit 10 of the multicolor printing system, and includes: a machine-side control unit 40 which is a stationary control panel for setting production conditions of the printing unit 10 and acquires registration information relating to registration of the printing unit 10; and a portable control unit 42 capable of acquiring and displaying registration information from the machine-side control unit 40, wherein the portable control unit 42 is configured to be capable of operating the machine-side control unit 40. According to this configuration, since the operator 3 can perform registration adjustment while confirming the registration information in the vicinity of the printing unit 10, the trouble of returning to the machine-side control unit 40 to confirm the registration information is eliminated, and productivity is improved.

The above is the basic structure of the registration control system 20 of the multicolor printing system 100 and its operation.

The above description is made in detail of an example of the embodiment of the present invention. The above embodiments are merely specific examples for carrying out the invention. The contents of the embodiments are not intended to limit the technical scope of the present invention, and various design changes such as changes, additions, deletions, and the like of the constituent elements can be made without departing from the spirit of the invention defined in the claims. In the above-described embodiments, the description has been given with reference to the contents in which such a design change is possible, such as "in the embodiments" and "in the embodiments," but it does not mean that the design change is not permitted without the contents in which such a character is present.

[ modified examples ]

Hereinafter, a modified example will be described. In the drawings and the description of the modified examples, the same or equivalent constituent elements and components as those of the embodiment are denoted by the same reference numerals. The description overlapping with the embodiment is appropriately omitted, and the description is repeated for the configuration different from the embodiment.

In the embodiment, the example in which the blade adjusting section 54 is controlled by the machine side control unit 40 or the portable control unit 42 has been described, but the invention is not limited thereto. Fig. 8 is a configuration diagram of a registration control system 20 according to a modification, and fig. 9 is a block diagram of the registration control system 20 according to the modification. For example, as shown in fig. 8, the squeegee adjustment portion 54 may be provided on the machine side of the printing unit 10, and the air-operated valve or the handle (not shown) of the squeegee adjustment portion 54 may be manually adjusted by the operator 3. In this configuration, the display screen of fig. 6 functions as a waveform of fluctuation of the registration error that can be used for confirmation or the like after the manual doctor adjustment. In this configuration, as shown in fig. 9, the machine-side control unit 40 may not include the blade control section 40 e.

In the embodiment, an example in which the multicolor printing system 100 includes two printing units, i.e., the 1 st printing unit 10A and the 2 nd printing unit 10B, has been described, but the present invention is not limited thereto, and the multicolor printing system 100 may include n (3 or more) printing units. In this case, the registration control system 20 may include (n-1) sets of the 1 st sensor 30a and the 2 nd sensor 30 b.

In the embodiment, the example in which 1 portable control unit 42 is used is described, but a plurality of portable control units 42 may be used.

In the embodiment, the example in which the registration adjustment unit 50 has the deviation adjustment unit has been described, but the present invention is not limited to this. For example, the registration adjusting unit may include a registration adjusting roller (compensator roller) that adjusts the position of the roll to correct the positional relationship between the web and the plate cylinder.

Any combination of the above embodiments and modifications is also effective as an embodiment of the present invention. The new embodiment which is produced by the combination has the effects of both the combined embodiment and the modified example.

Claims

1. A registration control system that controls registration adjustment of a printing unit of a multicolor printing system, the registration control system comprising:

a machine-side control unit that is a stationary control panel for setting production conditions of the printing unit and acquires registration information related to registration of the printing unit; and

a portable control unit capable of acquiring and displaying the registration information from the machine-side control unit,

the portable control unit is configured to be capable of operating the machine-side control unit.

2. The registration control system of claim 1,

the portable control unit is capable of exchanging information with the machine-side control unit via wireless communication.

3. The registration control system of claim 1 or 2,

the portable control unit is capable of making individual adjustments to the printing unit and overall adjustments to the multicolor printing system.

4. The registration control system of any of claims 1-3,

the portable control unit is capable of displaying a waveform generated from the registration information.

5. The registration control system of any of claims 1-4,

the portable control unit is capable of controlling doctor blade adjustment of the printing unit.

6. Registration control system according to any of claims 1 to 5,

the portable control unit is capable of changing an adjustment parameter of the printing unit.