The application of the hottest inkjet technology a

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The application of inkjet technology and the maintenance and adjustment of inkjet printers

packaging and printing enterprises such as food, beverages, tobacco and alcohol, cables, drugs and cosmetics need to frequently or at a high speed. Bar codes, patterns or words are sprayed on products or outer packaging cartons. Practice has proved that the small print inkjet printer mentioned in this paper is applied. Carton inkjet printer can greatly improve the production efficiency and the clarity of inkjet printing words, so as to improve the quality of products and enable enterprises to win a broader product market and better economic benefits

trace the printing history of numbers, bar codes, patterns or words on products. Before the invention of non-contact continuous inkjet printers, silk printers, pad printers and even more primitive mechanical roller punches were often used to complete printing. The result is poor legibility and time-consuming. The production efficiency is low, and more and more customers and consumers are lost due to the poor printing quality of products, which makes the production enterprises suffer losses. Therefore, advanced equipment is urgently needed to replace them

through the efforts of scientists and many scientific and technological workers, small print inkjet printer and carton inkjet printer have been developed successively. At present, these non-contact continuous inkjet printers have become the first choice to change the backward situation. Small print inkjet printer is mainly used to print small text. Digital and graphic printing products. Carton inkjet printer, as the name suggests, is used to spray large words, numbers and graphics on the outer packaging carton. These two types of non-contact continuous inkjet printers have at least the following eight common advantages compared with previous imprinters' discovery of brushing equipment and technology:

(1) clear and lasting handwriting: computer control, accurate printing of required numbers and words. Patterns, bar codes, etc

(2) high degree of automation: automatically realize the date. The change of batch and number realizes the unmanned operation of JTG d50- highway asphalt pavement design specification in the spray printing process

(3) wide range of applications: it can match any production line. It can spray print trademarks, ex factory date, description, batch number, etc. on the surfaces of various materials and different shapes, such as plastic, glass, paper, wood, rubber, metal, etc

(4) programming is fast and convenient: input the required numbers, words, patterns, lines and other information through the computer or machine, change the printing information, and just press the number key to complete it

(5) adjustable character size: the font width and height can be adjusted within an appropriate range, and the font can be bold at will

(6) the number of printing lines is adjustable: the number of printing lines is adjustable from 1 to 5 lines, and can be matched arbitrarily

(7) extremely fast printing speed: the fastest printing speed is 800 characters/second or 120 meters/minute

(8) meet special needs: spray with invisible ink, and spray the invisible information or anti-counterfeiting identifier on the product perfectly

precisely because the non-contact small print inkjet printer and carton inkjet printer are the crystallization of computer and high technology, their reliability is quite high, the software version is easy to upgrade, and the cost of printing once on the product is very low, which also has the above significant advantages. Therefore, small print inkjet printer and carton inkjet printer can be widely used in various industries such as food, beverage, tobacco and alcohol, packaging, medicine, cosmetics, electronics, mechanical parts and cables. Many famous inkjet printers also have historical fault records. Even if there is a fault, the maintenance personnel can quickly find the cause of the fault and solve it quickly

at present, the famous small print inkjet printers on the market include Metronic Germany maxtronics, video jet USA vidigit, Imaje France IMAS, domino UK domino. EBS Germany yibijie, its performance and quality are also quite good. The famous carton inkjet printers include EBS Germany yibijie, Linx UK lingxindajia, etc

maintenance and adjustment of inkjet printer

1. Inkjet printing principle

the more advanced the equipment, the higher the requirements for maintenance personnel. Before repairing the inkjet printer, you must understand the principle of inkjet printing, carefully read its use and maintenance manual, and it is best to receive the training of the full-time maintenance engineer of the inkjet printer. The following takes the small typewriter as an example to introduce the principle of inkjet printing: under the action of high pressure, the ink enters the spray gun, and the spray gun is equipped with a crystal oscillator, whose vibration frequency is about 62.5khz. Through vibration, the ink ejects to form a fixed interval point, and is charged at the charging electrode at the same time. The charged ink dots fly out after being deflected by the high-voltage electrode and fall on the sprayed surface to form a lattice. The ink dots without words are not charged, so they will not deflect and will be directly injected into the recycling tank and recycled. The ink dots sprayed on the surface of the substrate are arranged in a row, which can be full, empty or in between. The movement of the object perpendicular to the deflection direction of the ink dot (or the movement of the nozzle) can make the columns form a gap

the inkjet principle of the big type machine is different from that of the small type machine: the spray gun of the big type machine is equipped with 7 micro solenoid valves that can only be opened and closed at high speed instead of crystal oscillators. The text or graphics to be printed are processed by the computer board, and a series of 7 groups of electrical signals are output to 7 micro solenoid valves through the output board, so that the ink dots are sprayed on the sprayed surface to form a dot matrix and form words. Numbers or graphics

2. Maintenance examples

skilled use of the program menu of the inkjet printer, especially the service menu, is quite helpful for rapid diagnosis of its faults

3. Adjustment of inkjet printer

due to the good performance and quality of excel-100 (170i), only a small amount of adjustment is required in many cases. The adjustment contents are summarized as follows

(1) alignment of ink flow

① under the 02 service menu, press F1 to change NK off to NK on, and then head flashes

the proportion of exports to emerging countries will also be greatly increased ② slightly loosen the horizontal locking screw and adjust the horizontal adjusting screw to make the ink shoot to the center of the recycling port. If necessary, clean the recycling tank and tighten the screws after completion

③ adjust the vertical adjusting screw to make the ink line enter the recycling tank, and the best position is 1/4-1/3 of the height of the recycling tank. Too high is prone to phase failure, and too low may only print half a character

④ if the ink line is not in the middle of the charging tunnel, adjust it with pointed nose pliers

(2) inspection of ink flow

① check the reading of the pressure gauge and adjust the ink pressure regulator to make the reading about 40psi

② press F1 under the 04 service menu, and use the arrow to adjust the nozzledrive value, so that the ink breakpoint is set at the position in the middle of the charging tunnel towards the throat (or there are 3-4 complete ink dots in the middle of the charging tunnel)

③ put on the nozzle sleeve, press the shift+f2 key under the 03 service menu, adjust the ink pressure so that the cursor is at the set position, then press the Enter key, and in the 03 service menu, under the condition of removing difficult materials such as lead, press the F1 key to observe the ink flow time. After about 3 minutes, the set value can be changed

④ turn "high voltage" from off to on under 02 service menu

⑤ try printing. Under the above menu, turn "test print" from off to on, and move the nozzle on the surface of the object for printing (note that there are continuous ink lines in the nozzle at this time)

⑥ see the printing effect. Adjust the value of nozzledrive appropriately, repeat the above steps until the printing effect is satisfactory, take the average value when adjusting the breakpoint, reduce or increase nozzledrive by 2 points until the printing is not ideal, and then take the flat value

development of ink-jet printing

although the small ink-jet printer and carton ink-jet printer mentioned above have excellent ink-jet printing performance, the innovative spirit of scientists and scientific and technological workers in the world today has led to the birth of the most advanced laser ink-jet printer in the world. Next, take solarjet laser inkjet printer as an example to introduce the development of inkjet printer

solariet laser inkjet printer is one of the most advanced laser inkjet printers in the world at present: it can adapt to higher line speed, up to 300 meters/minute; Stronger inkjet ability, up to 1800 (products)/min; Larger typing size range, 100mm × 100mm, minimum line width 0.18mm: graphic size 0.5-100, set as required; Easy installation; Thousands of operating hours are maintenance free

solarjet inkjet printer combines the advantages of ink inkjet and laser inkjet, and has powerful computer processing ability. The full-size icon display and built-in keyboard provide a wide range of icon marking options, and only need simple training, so that the operation and maintenance personnel can be proficient in using it. An external personal computer with icons and text can be used to generate complex characters such as icons and then transmit them to the inkjet printer system. A full range of marking options are easily available for options, serial numbers, dates, and times. The inkjet font and direction are marked, and the ability to check the inkjet effect in advance. Therefore, solarjet inkjet printer has a wider range of applications and the ability to integrate small print and large print. It is expected to become a new application equipment for inkjet printing in the packaging industry (at present, its equipment price is higher than that of small print inkjet printer and carton inkjet printer)

solarjet inkjet printer also provides stable and continuous code printing, which can be widely used in various packaging materials, such as paper, cardboard, aluminum foil, metal, plastic, etc

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