In the daily use of UV printers, it is inevitable that there will be some minor problems and malfunctions. Xiaobian combed the 16th National Congress of the Communist Party of China, which is easy for everyone in the industry to solve, and can help you eliminate it.
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First, the UV printer breaks the ink
Failure phenomenon: individual nozzles do not print ink during the printing process;
Cause analysis: blocked nozzle channel, improper setting of nozzle working voltage, blocked ink bag, ink problem and improper negative pressure adjustment will all lead to ink break;
Solution: Press ink, wash the nozzle with cleaning solution, adjust the working voltage of the nozzle, soak and ultrasonic clean the nozzle, replace high-quality ink, and adjust the appropriate negative pressure value.
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Second, the UV printer prints poor patterns.
Fault phenomena: blurred picture and incorrect color coverage;
Cause analysis: the height of trolley is improper, the distance between nozzle and material is too large, which leads to inaccurate ink-jet landing point, strong airflow affects the accuracy of ink-jet landing point, the ink absorption ability of material is poor, and the nozzle is not calibrated;
Solution: reduce the height of the car, the fan or air conditioner can't blow directly at the work area, avoid strong airflow in the work area, change materials and recalibrate the nozzle.
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Third, the reset of the UV printer boot car does not rebound
Fault phenomenon: After starting the machine and clicking the reset button, the car only leans to the right, and there is no reset, and there is no flash spray, so other operations cannot be carried out;
Cause analysis: switch failure, trolley board failure, SCSI cable failure, PCI card failure, servo board failure;
Solution: Replace the switch, board /SCSI cable /PCI card/servo board.
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Fourth, the UV printer is garbled
Fault phenomenon: the picture appears irregular and unprinted spray;
Cause analysis: ink-jet data transmission processing error, trolley board failure, data cable looseness or failure, optical fiber failure, PCI card failure, picture processing problems;
Solution: Arranging nozzles can test individual nozzles one by one, eliminate faulty nozzles, replace data lines (nozzle data lines or trolley board data lines), replace trolley board/optical fiber /PCI card, and reload the picture for processing.
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Five, UV printer painting fixed place ink is not normal.
Cause analysis: picture processing problem, grating strip problem, car board failure;
Inspection method: change the picture, change the spraying position, and test the spraying effect of different pictures in different positions. If other pictures are normal, it is proved that there is something wrong with the processing of this pair of pictures; If all the pictures have problems with ink output at this place, check the grating strip, and if the ink ejection at a certain position is still abnormal, check the trolley board;
Solution: reload the picture for RIP processing, clean or change the grating strip, and change the trolley board.
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Six, UV printer car running uneven
Fault phenomena: some parts of the ejection picture are clear and some parts are fuzzy, and the accuracy of inkjet positioning in each position is different;
Cause analysis: the guide rail girder is not adjusted horizontally;
Solution: Re-adjust the beam.
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Eight, the printed picture has horizontal stripes
Cause 1: The nozzle is in poor condition;
Solution: If the nozzle is blocked or sprayed obliquely, the nozzle can be cleaned.
Cause 2: The step value has not been adjusted;
Solution: In the printing software setting, the machine setting turns on the maintenance sign to correct the step.
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Nine, the color deviation is large
Cause 1: the picture format is wrong;
Solution: Set the picture mode to CMYK mode and change the picture to TIFF；;
Cause 2: The nozzle is blocked;
Solution: print the test strip, and clean the nozzle if it is blocked;
Fault reason 3: wrong software setting;
Solution: Reset the software parameters according to the standard.
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Ten, the edge of the picture is blurred and flying ink.
Cause 1: the picture pixel is low;
Solution: The picture DPI is 300 or above, especially for printing 4PT small fonts, and the DPI needs to be raised to 1200;
Failure reason 2: the distance between the nozzle and the printed matter is too far;
Solution: make the printed matter close to the print head, and keep the distance of about 2 mm;
Cause three: the material or machine has static electricity;
Solution: the machine shell is connected to the ground wire, and the surface of the material is rubbed with alcohol to eliminate the static electricity of the material. Use electrostatic processor to eliminate surface static electricity.
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Eleven, print the picture floating with tiny ink spots.
Cause 1: Ink precipitation or ink break;
Solution: check the state of the nozzle, check whether the ink fluency is deteriorated, and check whether the ink path leaks;
Cause 2: the material or machine has static electricity;
Solution: Ground wire of machine shell, wipe alcohol on material surface to eliminate static electricity.
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Twelve, printing horizontal ghosting
Fault reason 1: the grating strip is dirty;
Solution: clean the grating strip;
Fault reason 2: the grating device is damaged;
Solution: Replace the grating with a new one;
Failure reason 3: poor contact or failure of square head optical fiber line;
Solution: Replace the square fiber cable.
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Thirteen, print ink dripping or broken ink.
Ink dripping failure: some nozzle dripped ink during printing;
Solution: a, check whether the negative pressure is too low; b, check whether there is air leakage in the ink path;
Broken ink fault: a certain color often breaks ink during printing;
Solution: a, check whether the negative pressure is too high; B, check whether the ink road leaks; ; C. Whether the nozzle has not been cleaned for a long time; if so, clean the nozzle.
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XIV. UV printer crashes
Fault phenomenon: the boot car crashed into the right end;
Cause analysis: positioning failure, grating head failure, trolley board failure;
Solution: Check/replace the switch, replace the grating head and replace the trolley board.
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XV. The negative pressure air pump of UV printer is loud.
Cause analysis: the air pump is loose, the filter is blocked and the air pump is out of order;
Solution: Tighten the air pump and replace the filter/air pump.
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Sixteen, UV flat panel printer boot car board light is not bright, can't reset.
Cause analysis: loose wiring, car board failure, servo board failure, data line failure;
Solution: Reseat the data cable and replace the trolley board/servo board/data cable.
