(This article is an original article from Bisheng. It is forbidden to reprint, and reprinting must be corrected)
From the successful development of the multi-color offset printing machine remote control device and quality control system in 1972 by the German Roland Company, the automatic control system of the printing press has developed rapidly. Almost all printer manufacturers in the world have launched their own automated control systems, which has become a trend. No doubt the leader in this trend is Heidelberg. This article will introduce some of Heidelberg's CPC control system, CP-tronic system, CP2000 system.
Heidelberg's computer printing control system, CPC (Computer Printing Control) system, is a scalable type of Heidelberg applied to lithographic printing presses for presetting the amount of ink, remotely feeding ink, remotely registering, and monitoring printing quality. system. The system has ink volume and registration control device CPC1, printing quality control device CPC2, printing plate image reading device CPC3, registration control device CPC4, data management system CPC5.
1.CPCl printing control device
The Heidelberg CPCL printing control device is composed of a remote ink feeding device and a remote register device. It has three different models, representing three different expansion levels.
(1) CPC1-O1 This is the basic ink supply and register remote control device. The device controls the ink fountain motor through the buttons on the console to adjust the amount of ink, and controls the registration motor to realize the registration of multi-color printing.
â‘ Ink volume control The Heidelberg printing press divides the ink rollers into 32 areas in the axial direction (off printing machine, 20 in four-start printing machine), each ink zone has a width of 32.5mm. When adjusting the volume, it can be achieved by adjusting the ink volume of a single ink area. On the control panel of CPCl-O1, there are 32 groups of adjustment buttons 7 for controlling the micromotor, which correspond to 32 ink zones respectively. Each group has two buttons, the upper button is the ink adding button, and the lower button is the ink reducing button. Above the button is the ink level display. Like the adjustment button, there are also 32 groups, corresponding to 32 ink areas, and each group of displays is composed of 16 light-emitting diodes. It is used to display the thickness of the ink film in this area and the adjustment range Within 0-0.52mm, each cell represents 0.01mm.
The adjustment of the ink output of the entire ink fountain can be achieved by changing the intermittent rotation angle of the ink fountain roller through the button 3 on the console. The adjustment of the rotation angle of the ink fountain roller is also controlled by the micro motor. The size of the rotation angle can be displayed on the display above the button. The value displayed at this time is the percentage of the actual rotation angle and the maximum rotation angle. For example, the display shows "45" indicating the ink fountain The actual rotation angle of the roller is 45% of the maximum rotation angle, and the adjustment accuracy is 1% of the maximum rotation angle.
â‘¡Control of registration There are two sets of buttons on the console to control the axial and circumferential registration of the plate cylinder. The control process is realized by the micro motor installed at the shaft end of the plate cylinder. Similarly, the value of the control adjustment can be displayed above the respective buttons, the adjustment accuracy is 0.01mm, and the adjustment range is K2mm.
Use a magnifying glass to observe the cross registration line of the printed sample on the console to determine the registration error of each color. Then select the corresponding unit through the unit selection button and adjust it through the register control button.
(2) CPC1-02 In addition to all the functions of CPC1-O1, CPC1-02 also adds a cassette tape device, light pen, ink film thickness distribution memory, and processor. Use a light pen to swipe on the ink volume display, you can record and store the current ink film thickness distribution in the form of data, and just use it when you need it.
The cassette tape device of CPCl-02 can call the preset data provided by the CPC3 printing plate reading device, so the amount of ink supply can be quickly adjusted to the set value, thereby shortening the preparation time and improving the production efficiency.
(3) CPCl-03 This is another expanded form of CPC1 device. It provides manual control, follow-up control and automatic follow-up control. It can be connected to CPC2 printing quality control device through data line The CPC2 device measures the thickness of the ink layer of each ink area on the printed product and converts it into the ink volume adjustment value, and compares it with the set value, and then corrects according to the deviation value, so as to reach the predetermined speed faster and more accurately Value.
(4) CPC1-04 CPC1-04 is another new type of ink volume and register remote control system for Heidelberg presses, which can completely replace the original CPC1-2 and CPC1-03 devices, and is compatible with all its functions. The information display of this new control system uses the same plasma display as Heidelberg's CP-tronic, and the operation and display methods are also similar to CP-tronic, thus making the system linkage control of CPC and CP-tronic easier.
The functions of CPC1-04 system are further rich and diverse. The information is represented by images, which is similar to the CP window system, which makes printing control and fault diagnosis operations more simple and convenient, and improves work efficiency. CPC1-04 system register remote control is operated by a set of individual control keys, the procedure is more reasonable.
The control of CPC1-04 ink zone remote control servo motor and plate cylinder registration motor has also been greatly improved than before. Once the ink distribution value of the printed matter is set, the CPC1-04 system can now simultaneously control 120 ink zone motors to control the ink volume, so that the time required for the ink and water ink balance of the whole machine is shortened by more than 50% compared with the previous time. -04 can also control more servo motors for registration at the same time than before, thus reducing the preparation time of plate change and printing work.
Used in conjunction with the Heidelberg Plate Reader CPC31 or the Heidelberg Print Data Management System CPC51, the CPC1-04 system can perform preset ink distribution and data storage for more prints than before. For example, the dot distribution information of 50 different prints on CPC31 can be simultaneously converted and analyzed on the CPC1-04 system through a magnetic card. The preset ink volume distribution values ​​are stored separately, which can greatly improve the preset Reliability and efficiency of work. The CPCL-04 system produced later can also perform precise registration control on the glazing unit of Heidelberg's printing presses.
CPC2 quality control device(1) Introduction CPC2 printing quality control device is a measuring device that uses printing quality control strips to determine printing quality standards. The printing quality control strip can be placed on the front opening or trailing edge of the printed product, or on both sides. CPC2 can be connected to multiple printing machines or CPC1- 03, and the measured values ​​can be transmitted to up to 7 CPC1-03 consoles or CPC terminal devices using data transmission lines. If equipped with a printing terminal, the data can be printed out; if connected with CPC1-03, the measurement data can be directly transmitted to CPC1-03 for control, thereby shortening the time required to replace the printing job and reducing the adjustment Machine-waste. In printing, the computer converts the actual optical density value into input data that controls the amount of ink to ensure a highly stable printing quality.
The synchronous measuring head of the device can scan all the color levels of the printing quality control bar within a few seconds. You can measure six different colors (field gradation and screened gradation) on a print, and then determine such as color density, tolerance deviation, dot gain, relative printing contrast, blur and ghosting, overprint fastness, Characteristic parameter values ​​such as hue deviation and grayness, and compare these data with preset reference values. The above results can simultaneously display the given value or the deviation value from the specified value on the fluorescent screen of the CPC2 quality control device to inform the operator. At this time, the operator can press the "release measurement value" key to transmit the data to the CPC1-03 console. The CPC1-03 console calculates and displays the recommended value based on the calibration color metering ink roller setting value and the measured optical density deviation. Correct the value and correct it. The calibration method can be carried out by manual mode, follow-up mode or automatic follow-up mode. The achieved standard value can be printed or stored for later use.
(2) CPC2-S spectrophotometric quality control CPC2-S is to replace the original CPC2 density measurement with chromaticity measurement. CPC2-S can perform spectrum measurement and spectrophotometric identification, and can calculate the ink control value of CPC1 device according to the gray, solid, mesh and overlapping area of ​​CPC measurement bar. Measuring strips for measuring proofs or manuscripts before printing, and quality control strips for printed products during the printing process, and can directly convert the 6 colors measured from the originals into spot colors; it can be used in conjunction with CPCL to maximize The proof is close to the proof or guides printing. It can also measure ink optical density.
(3) Heidelberg's printing quality control system CPC21 This system uses spectral spectroscopy to improve the color obtained by the human eye in the past. This device is extremely useful for upgrading PMS and special internal colors. By comparing the reference value of proofing with the printed sheet of the machine, the correct correction value of the inking can be calculated automatically. Then the machine performs self-correction.
(4) Heidelberg's printing quality inspection system CPC22 CPC22 is a very economical and practical printing quality inspection system, which can help printing manufacturers improve the quality of printed matter and reach the ISO 9000 printing quality inspection standard, which in turn helps companies obtain ISO 9000 certification.
The first step of the ISO 9000 standard or print quality inspection certificate is to conduct continuous and regular inspections of the printed parts during the printing process. Each print can get the sampling frequency and detection content according to its printing characteristics. According to this frequency, the printing workers take out the proofs regularly, analyze the quality of the proofs on the CPCL-04 reading table and print the test data by the CPC22 printing detection system, and record them on the proofs. By recording and printing the print data of this set of proofs, printing manufacturers can provide their users with a complete set of process data files for printing quality control (including all proofs), while also achieving the purpose of regular quality control of the printing process.
Heidelberg's printing quality inspection system CPC22 has a portable cordless printer, which is used to record the inspection data of the sample, and the data can be printed on any part of the printed sheet.
CPC22 system's detection frequency, content and output format of printed sheets can be preset in CP window system according to user requirements. The indicator light will automatically flash when the number of prints is close to the sampling point, reminding the operator to take a sample check. After the sample is taken out, the CP window system transmits the actual printing data at that time to the CPC22 system. As long as the button is pulled, the data can be printed and recorded on any area of ​​the sample. The operation is very simple and reliable, and its superiority is particularly obvious for short version high-speed printing.
After the printing is completed, the worker can have a complete set of samples with data records for each print, as a reliable basis for printing quality tracking control.
(5) Heidelberg online image control system CPC23 CPC23 is the newly launched, the world's first single-sheet offset printing press online online image control system by Heidelberg. The introduction and use of this system enable the printing machine operating functions to compare and measure the printed sheets, thereby making it possible to control the color of random prints; at the same time, we can accurately detect the defective areas of the printed images, ink smears or overprint errors. become possible.
The CPC23 system is specially designed and manufactured for those printing companies that have extremely high requirements for printing quality, such as those who produce high-quality packaging and folding cartons, exquisite brand-name trademarks or other high-quality commercial prints. The CPC23 system uses a specially designed high-resolution CCD monitoring scanning head to scan and sample the entire printed sheet, and transmits the sampled data to a special computer for processing and comparison and analysis with preset values. The data sampling accuracy of this system is extremely high. Taking 70cm × 100cm printed sheets as an example, the CPC23 system subdivides this area into more than 1 million pixel units and samples them one by one. The printed sheets are displayed on a high-resolution color display after sampling, and any error information of the printed image will be clearly displayed immediately, and the printer can take timely and accurate measures to correct it. The CPC23 system can easily monitor the diameter of The fine printing defects of 0.3mm can also be detected in the area of ​​0.8mm × 0.8mm due to the smearing of the ink and the local density deviation of not less than D = 0.1. When the CPC23 system finds the above errors, it will prompt the printer immediately. According to customer requirements, Heidelberg can also provide a label insertion device at the receiving end.
In order to achieve the color control of printed sheets, it is necessary to supervise and control some key areas. Through CPC23's color display, you can analyze the printed sheets such as packaging boxes, trademarks and samples with high quality requirements, find out the most important areas for printing quality control, and monitor and set them. CPC23 system can also It is set for automatic analysis. Each ink zone of Heidelberg offset press has 16 measuring points that can be defined.
When the printing machine is set up and the operator gets a satisfactory printed sheet, the CPC23 system will automatically collect and calculate the subsequent 16 measurement data of the printed sheet to obtain a standard comparison value, which will be used as the benchmark for the subsequent printed sheet image monitoring and color control.
The printing color difference can be found in time during the printing process, and the CPC23 system can display the color change trend through its display screen, and the printer can immediately take corresponding corrective measures. The system software also has a memory function for controlling actions, thereby ensuring accurate and timely correction of color difference during the entire printing process, ensuring the stability of printing quality to the greatest extent, and improving the yield.
3. CPC3 printing plate image reading device
The CPC3 printing plate image reading device is a device that determines the amount of ink supplied by measuring the percentage of the printing plate dot net area. Corresponding to CPC1, CPC3 also divides the image into several areas, and calculates the ink volume of each ink area separately during measurement. The CPC3 printing plate image reading device can sense the percentage of the area occupied by the ink-friendly layer on the printing plate one by one on the ink feeding area. The width of the sensing hole is 32.5mm, which is equivalent to the effective width of the measuring ink roller or the distance between the ink fountain screws on the ink fountain of the Heidelberg printer. For the largest image part, just use 22 sensors arranged in a row, and measure an ink supply area at the same time. The measurement area of ​​each group of sensors is 32.5mm × 32.5mm. Each group of sensors is installed on a measuring rod. The sensors on the measuring rod can work simultaneously or part of them as needed.
CPC3 is designed for Heidelberg plates of various sizes and specifications. It can read all standard commodity plates (including multi-layer metal lithography). The quality of the plate surface directly affects the measurement results. If the glue of the basic material and coating material of the printing plate is more uniform, the measurement result is more accurate.
The CPC3 printing plate image reading device is usually placed in the plate-making room. After the printing plate is exposed and glued, it can immediately read a printing plate in just a few seconds. During the reading process, the sensors are similar to the printing plate to be read. Calibration bar. Calibrate to 0% in the non-image part and 100% in the field part. In order to eliminate the difference in color between the calibration bar and the printing plate, an additional calibration sensor is used to measure a calibration area. This calibration area can also be printed in Exposure on the plate, it can automatically correct any deviations in the color.
The output of CPC3 plate image reading device data can be in the form of cassette tape or print. When print output is used, there are two different types of print. One is the percentage values ​​of various colors and various ink areas; the other is the area percentage of a single color in the form of a graph. In total, the device can measure and store six printing plates (colors) in succession. The color order of the printing plates is black, cyan, magenta, yellow, and the fifth and sixth colors. Before printing, just give the operator the CPC cassette tape recorded on the printing plate and CPC3, as long as the tape is read into the memory of CPC1-02 and CPC1-03, press the button on the console, then The data is sent to the printing machine, and the processor of CPC1-02 and CPC1-03 has already converted the percentage data into the setting value of the individual ink supply area, and then it can start printing. Therefore, using CPC3 to read the printing plate can pre-adjust the thickness distribution of the ink layer faster and more accurately, and there is almost no paper waste and time waste when changing the plate and adjusting the machine.
CPC30 is the interface between the pre-press and the printing platform. It contains a product called CPC31 used to read the detailed information of the printing plate and calculate the size of the image information. CPC31 connects the plate processing and printing platform. Compared with CPC31, CPC32 mainly considers that the information needed for printing is collected from the time the plate is made, especially the color and positioning data information, and the CIP3 data technology is used. The CPC50 module is also being planned, mainly as a server for integrating CPC32 data so that it can transmit control signals to printing machines and some book binding machines. Considering the development of CIP3 and PPF formats, CPC32 is the only product that is compatible with PPF,
4. CPC4 register control device
(1) CPC4 register control device CPC4 is a cableless infrared remote control device, is a controller specially used to measure register. It can be used to measure the registration error value in the vertical and horizontal directions, and can display and store the measurement results. Put CPC4 on the printed matter during measurement, you can measure the cross-line registration error and record it, then put the CPC4 device on the control board of the CPC1 console, press the button to send the data to CPC1 by infrared transmission And the stepper motor is driven by the remote control device of CPC1 to adjust the position of the printing plate and complete the necessary correction.
(2) CPC42 Heidelberg automatic registration control device CPC42 is the newly-launched fully automatic registration system of Heidelberg. During the printing preparation work or the formal printing process, the system automatically monitors and controls the registration of each printed sheet, which greatly reduces the printing preparation time, and the printing workers can concentrate on quality management during the production process. .
Used in conjunction with the CPC42 system is a new type of printed registration marks. The lateral width of this new type of mark is only half of the previous common mark, which increases the effective printing area of ​​the printed sheet. CPC42 can carry out automatic registration detection and correction of Heidelberg offset printing press, and its registration control accuracy reaches ± 0.01mm.
The main part of the CPC42 fully automatic registration control system is the measuring rod installed on the last printing unit of the printing press. Two measuring heads driven by servo motors are installed on the measuring rod. The displacement and positioning of the measuring head are controlled by CPC1- 04 control. In the actual printing process, the two measuring heads of CPC42 provide the measuring light source through the optical fiber, measure the registration deviation of each color, and transmit the data to the CPCL-04 system for calculation and comparison, and then the CPCL-04 The system performs automatic registration control on each printing unit, and automatically adjusts the printing cylinder in the circumferential, horizontal or diagonal directions without manual intervention. For each different print, the registration parameters can be stored as soon as they are determined, and will not affect the registration accuracy because of changes in paper and ink specifications or changes in printing speed. Printers can concentrate on color control or Prepare the parameter presets for the next print.
In addition to detecting the longitudinal and horizontal registration of printed sheets, CPC4 can also detect registration in diagonal or diagonal directions. When the diagonal registration error is detected, the CPCl-04 system can perform the registration operation task on the printing device.
5. CPC5 data management system
Heidelberg CPC5 links data control with management, pre-press, printing and post-press operations. This complex printing house management system is based on a data network. It optimizes and automates changes in information such as efficient production planning, automatic machine presetting, and acquisition of effective production data. The result is to speed up job preparation time and production time; at the same time speed up the order of information data. Connected with the CP window data control system, data control also provides a basis for remote diagnosis services between printing manufacturers, sales companies, and machine manufacturers. (to be continued)
Outdoor bench refers to the seating facilities used in outdoor places, often commonly found in parks, squares, leisure areas, scenic spots and other outdoor environments. The classification of outdoor benches can be introduced according to many aspects such as material, shape and function.
First, classification by material
1. Wooden bench: Wooden bench is one of the most common outdoor benches, usually made of natural wood, with natural and environmentally friendly characteristics. Wooden benches are usually made of solid wood or artificial wood, and the surface is treated with waterproof and anti-corrosion, which can adapt to various climatic conditions in the outdoor environment.
2. Metal bench: Metal bench is made of metal materials, such as cast iron, steel, etc. The metal bench is durable, corrosion resistant, easy to clean and is suitable for all kinds of outdoor environments.
3. Stone bench: Stone bench is made of marble, granite and other stone, which has the characteristics of good texture and beautiful appearance. Stone benches are generally suitable for high-end places such as garden scenic spots and can be integrated with the surrounding environment.
5. Combined material bench: Combined material bench refers to the bench made of different materials, such as the combination of wood and metal, stone and plastic combination. Combined material bench can usually combine the advantages of different materials, more in line with the needs of different outdoor environments.
2. Classification by shape
1. Linear bench: Linear bench is the most common shape of bench, generally composed of a row of seats, forming a straight line arrangement. The linear bench is suitable for outdoor places with large pedestrian flow and can provide more seats.
2. Arc bench: Arc bench is an arc bench composed of multiple seats, usually used in a ring seat area or landscape area. The curved bench can not only provide comfortable seating, but also increase the aesthetics of the place.
3. Wavy bench: The wavy bench is a bench composed of multiple seats in the shape of undulating waves, giving people a sense of movement and flow. The wavy bench is suitable for parks, squares and other places that need to increase vitality and fun.
4. Round bench: A round bench is a round bench composed of a number of seats, which is usually used in outdoor recreation areas and can provide a place for groups to gather.
3. Classification by function
1. Leisure bench: Leisure bench is a common form of outdoor bench, it can provide comfortable seats, so that people can relax in the outdoor environment.
2. Viewing bench: Viewing bench is usually set in a scenic outdoor environment, providing comfortable seats for people to enjoy the scenery.
3. Sitting bench: Sitting bench is usually set in parks, squares and other places with large traffic, to provide people with a short rest and relaxation.
4. Cool pavilion bench: Pavilion bench refers to a form of combination of bench and pavilion, which can provide sunshade, rain prevention and other functions, suitable for outdoor leisure areas.
In short, the classification of outdoor benches can be divided from many aspects such as material, shape and function. Different outdoor environments and needs need to choose a suitable bench type to provide comfortable and beautiful seating facilities
Beach Bench,Deck Chair,Deck Bench,Waterproof Bench
Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.officer-furniture.com