Common fault phenomenon and the possible reasons
Printer when printing, different strange failure phenomenon is multifarious, failure reasons, it is difficult to describe, but plus ca change, understand the requirements of the terminal market and the status quo, it is not hard to summarize and induce its phenomenon in common:
1.The customer to evaluate the output image quality standard: color saturation, bright beautiful, image is clear, no stripes, without off color, soft transition, no misting, drops of ink, edge, no dislocation, the phenomenon such as gibberish.
2. Customers to use common problem, the most headache problem, the most concern of the: The most common problem:
1)ink system, the board problem;
2)the most headache problems: the stability of the output;
3)the most concern: the print head problem (jams, burn the top).
3. The common problem: (the main effect of output image to perspective as the starting point) Horizontal stripe, vertical stripe, water ripple, white dots/spend, images have off color (output is not stable, dislocation/gibberish, misting/drops of ink
Below these phenomena were analyzed, and find out the possible reason, of course, each machine, each type of ink all has the personalized structure and characteristics of the fault phenomenon and reason also each are not identical, in here, we take the popular common point of view, tries to look for some of them have in common (the following content is for reference only).
1.horizontal stripes: that is, in the image has a uniform or non-uniform overlap or uneven color, texture, two-tone possible reasons are:
(1) motor transport
A. walk cloth uneven: lead to irregular stripes, now need to consider the medium reinstall, or recalibration feed device, if for some time, this phenomenon in a long time, may be the medium transmission device, such as: reducer skid, the gear meshing is not normal, operation and so on, the motor need to contact the manufacturer/distributor, etc.
B. step size is too large, is medium transfer too fast, have caused every step are not covered by the ink blank, after multiple PASS leads to uniform stripes, the color of the stripe color than other parts of the shallow;
C. step size is too small, the medium transmission too slow, lead to each step are covered by excess ink, after multiple PASS leads to uniform stripes, the color of the stripe color than other parts of the deep; At this point, according to various step size parameter of the machine Settings, to adjust (via the interface or the software, etc.), such as: JV3 machine: according to different medium is needed to adjust its step, can adjust its parameters, the adjust menu is in commonly - 255-255 between adjustment, step size is too big, is to tune the parameters of small, step size is too small, you need to tune the parameters of large, the parameters of the general light cloth for 100 (experience); HP5500 machine, you can enable automatic calibration menu fine-tune; Most of the large outdoor printer can adjust the parameters in the random software.
(2)the nozzle side
A. the nozzle plug (plug) :
1)if a permanent blocked, the stripes should be uniform, if untreated, will always maintain the status quo; The phenomenon of ink particles is too large, or ink, refill tube, the print head itself (inferior the print head) in other insoluble impurities, or breath from the print head surface impurities, will print head filterzzle clogging (internal filter) are most of the print head, now in general use warm water (mainly bubble print head) or cleaning fluid immersion, or to perform in the printer strong measures to deal with such as cleaning;
2) if the nozzle surface dry (may be too long, exposed to the air time is too long, ink or ink in the propellant too much), the stripe is irregular. At this time can use a special wipe cloth/paper towel clean surface, effect is serious, need to use special clean cloth/paper dips in cleaning fluid to wipe.
Such as JV3, the machine can carry out automatic cleaning function such as ROLAND, if cannot solve the cleaning, you need to use cleaning fluid or ink wash or soak; But some machines such as: NOVAJET, HP 1055, HPZ2100 can only remove the wipe, soak Note: if the frequent replacement using different brands of ink or use the ink has a shelf life, it is easy to cause nozzle filter (or nozzle) jams.
B. nozzle piezoelectric crystal crystal failure/fever: because of the print head aging, part of the piezoelectric crystal/fever crystals have failed, can not to think about right now, at this time of striped uniform, regular, test strip has a white line, or obvious broken hole, if affected printing effect, but you need to consider replacing the print head. C. the print head surface is covered by the impurities or other ink: at this point be: testing is not normal, with white lines and stripes, print is not normal, at this time to wipe the surface of the print head in a timely manner. Such as: printer in printing process,Because often wipe paper, paper with the edge of the print head surface scratches, often caused by other ink print head surface pollution, at this time only need to use dedicated to wipe paper/cloth to clean the surface.
A.the negative pressure system:
a. ink: a white line, print occurs without stripes of regularity, the reasons are:
1)lack of ink cartridge (liquid level sensor failure, ink pump does not work, the ink control panel control failure, filter plug, etc.), the cartridge liquid level is too low, at this time to replace the related accessories;
2)leak ink road, especially with the print head refill tube joint leakage, at this point to check ink road, especially the position of the connector, will rule out the air in the refill tube;
3) ink illiquid (viscosity), timely replacement ink;
(4) the print head inside ink sac lack ink print head with ink sac itself), etc. Such as: HP article 5500 if a test is normal, and you have severe white line in printing, the print head must be taken into consideration at this time because the serious loss of ink and cause the white line, should now add ink processing, generally at less than 34 grams (experience) need to add ink. If Roland, JV3 machine, etc Refill tube ink, you can use MAINTAIN menu of the FILL UP function for exhaust gas filling ink refill tube.
b. nozzle JiMo (paste) : there will be a wire drawing, the phenomenon such as slant hole, uneven output image stripes, appears phenomenon is: the test article is abnormal, the edge of the image in the tail, misting phenomenon, the reasons are:
1)ink quality problem, may surface tension is too big, must be timely replacement ink;
2)ink level is too high, destroyed the siphon principle, must reduce the height of the cartridge, or replace the cartridge filter;
3)refill tube in a large number of bubbles and to refill tube in the air bubbles out. B. have a negative pressure system:
A. ink: insufficient reason may be that: the cartridge ink (ink pump, sensor failure, ink slab and other work, timely replace the corresponding parts) or negative pressure value is too high (negative pressure value to trim) in a timely manner.
B. ink paste head: print phenomenon and the negative pressure system, the reasons are:
1)ink quality problem, may surface tension is too big, must be timely replacement ink;
2)ink road sealing is bad, have a flat, there are a large number of bubbles in the refill tube, should be the refill tube in the bubble elimination;
3)the negative pressure value is too low, a negative pressure value raised in a timely manner.
4) in the process of printing, can appear the blank of the triangle This phenomenon is the cause of most ink paste head (reason as mentioned above), the ink quality problem is the main reason; And if the print head from external strong absorbing, immediately for printing, because the ink to add left by absorbing cavity, in a short period of time appear triangle blank, so, in the strong absorbing, to wait for a period of time for printing.
(5) the printer configuration and setup is not normal The print head installation does not reach the designated position; The print head installed loose; Nozzle alignment; Trolley guide rail and twisted, or for the same color as the phenomenon of the emergence of a few color uniform stripes, need to manually correct or software automatic adjustment to eliminate the mechanical. And software automatic adjustment function is produced at the time of the machines in mechanical assembly, error compensation, so before printing, typically process was carried out on the print head alignment test, as far as possible can be set by the software to make the print head alignment, if for this phenomenon more serious, or by artificial mechanical rectification, along with software tweaks to complement (for solvent printer, this phenomenon is common). General printers have automatic adjustment function, such as: HP series, MIMAKI series, EPSON series machine; But if the error is too big, can only replace the print head. Also, such as domestic printer, because of factors such as costs, the guide rail (rod) is in use will be distorted, can only replace the guide rail (rod) at this time.
Some of their poor quality, surface medium oil or place too long, because its not suction, can cause there was a stripe, printing at this time, should be timely change of medium. Note: no matter what time of the print head to take from the outside to strong drain (usually vacuum pump and other equipment) after cleaning, be sure to wait for a period of time for printing, because in the strong absorbing, will form a vacuum in the nozzle, in a short period of time, the cause for the ink is not enough, which white line, the abnormal phenomenon such as blank.
2) vertical stripes
(1) motor system:
A. the car jitter:
a. support the car movement parts and components (ball, the slider, shaft sleeve, etc.) to wear, or mixed with impurities, lead to increase friction, uneven car movement, intermittent or even the appearance of the stripe;
b. guide (rod) distorted or wear and tear, caused to here, the car movement will be fixed vertical stripes Appeared above phenomenon, must give guide (rod), clean ball, the slider, shaft sleeve, etc, in a timely manner to add lubricant to reduce friction; When necessary, the need to change in time related accessories.
B. motor rotational coaxial:
Car drive system is not normal, it may be for synchronous belt wheel spin (or gear, etc.), tooth abrasion; Motor, reducer gear sliding, appears stripe base is fixed, should be timely replacement of spare parts.
C. drag chain problem: For wide wide printer, by exercise for a long period of time, drag chain of each section is not smooth, loose, the phenomenon such as rigidity, causing the car movement resistance increases, can add a small amount of lubricating oil in each section to cooperate at this time, when necessary, change the drag chain, this phenomenon, for domestic printer is common.
(2)the medium itself Medium itself is oily be soiled, no strong absorbency and medium at this time must be replaced.
(3) grating feet dirty
Grating ruler with stain, impurities, led to the grating read head when reading out the signals, data loss, and produce a uniform stripes, this time with a clean dust-free paper/cloth (with alcohol) gently grating ruler to wipe clean. Note: to regularly wipe the grating ruler.
(3)water ripple In the output picture, there are some transparent or opaque is similar to the water sample stripe, block design, this phenomenon appeared in more PP paper, glossy paper label, such as screen for medium. Possible reasons are: 1) the print head servo motor car itself, in a timely manner to replace servo motor;
2)the car walk not divide evenly, solution as described above.
3)medium problem, timely change of medium.
(4) white spots, spots, spend a few
Problem: a. ink in ink composition configuration problems, replace the ink; B. medium itself exists the defect of angular: some poor quality of medium, the production process and raw material selection is very rough, resulting in the medium surface have fingerprints, grease, impurities, etc., in the process of the printing ink can't adhere to the media, a white point, take shape. At this point replaced medium; C. ink system: ink road or have a lot of residual waste ink refill tube in place too long (time) and cleaning fluid, print on the image there are a lot different from the normal white point, take a picture, this time should be again, thoroughly clean the ink and ink cartridges. So, in the replacement of ink or ink road for routine maintenance, be sure to clean ink road clean, and after cleaning to residual cleaning fluid and waste ink in the ink road clean.
(5)image output have off color A. the quality problem of the medium itself: poor quality of medium, ink absorbency is not strong or uneven, lead to uneven with ink, images appear off color. B. in the printing process for other treatment:
1)if the change in the process of printing media (mainly for big patchwork pictures);
2)replacement ink or raises the different type/brand of ink;
3) or in the process of printing, the pause time is too long and too frequent, will cause the output images of the discontinuous, have off color, so before printing, to check whether the medium and the ink is full, otherwise, will be timely to supplement. Especially for a printer with heating drying device, the pause time is too long print before and after the suspension of a few PASS images, there were significant differences in the color;
C. paste head, frequent cleaning the print head: because paste head, ink (see the causes and solutions mentioned above) reasons lead to frequent cleaning the print head, color difference will be formed in the picture, the picture of discontinuity, because in the before and after cleaning, the effect of the print head to print has a bigger difference. So, before printing, to check the working condition of printer, choose high quality ink;
D. ink system is not stable, especially liquid level: for a printer using siphon principle of work, the cartridge liquid level of high and low, to a large extent affected the print head for ink, directly affect the print effect. High level when the color of the deep, the color of the liquid level lower than in the picture color difference;
E. negative pressure instability: for using the principle of negative pressure ink printer, negative pressure is not stable, also directly affect the print head for ink pressure, then influence the effect of the inkjet print head;
F. the same picture, different machines or under the condition of different type (mainly for the need to splice the sharp pictures) even the same type of different printers, the print (color) has the effect of the difference of different, after printing the joining together, on the whole, have off color, so, if there is stitching images, try to use the same printer to print on the same conditions Complete, to maintain the overall effect and continuity;
G. the print head working voltage instability or change the voltage in the process of printing: for piezoelectric print head, the size of the print head working voltage directly affected by the force of the jet drops, which looked from the overall visual effect, will have the effect of different shades, articulation. Therefore, before printing, to set the print head voltage normal (general adjustment in the software), the input end of the printer to add the voltage stabilizer.
(6)dislocation, the code Dislocation: namely in the printing process, there is a PASS or a few PASS to print the picture out, caused the entire picture scrap; The statement: in the process of printing, abnormal information of the image appeared on the screen, may in the picture in, may also in the picture out, cause scrap the whole picture. Dislocation, the code also often appear in a picture:
A.the nozzle itself problem: circuit inside the print head is out of control, error in printing printing information, need to change the print head;
B. data transmission is not smooth, loose connection head: in the process of print data transmission, because the data transmission is not stable, lead to print dislocation, garbled, this phenomenon is more common in the MTK, need to check the data line at this time, especially the cable junction;
C. bad earth, static voltage is too high; Low adverse interference: printer, even machine static voltage is much higher than data processing, working voltage, and the outside world if there is a large magnetic field and electromagnetic, etc., such as: surrounded by light, high capacity transformer, etc., will be seriously interferes with data transmission, easy to generate the code. So, when installing the printer, especially wide printer, equipped with regulated power supply, grounding to be good and stable, as far as possible away from strong electromagnetic source area;
D. image data is too large, easy to break and crash: all printer need a computer to cooperate, if the computer configuration is too low (please refer to the specific computer configuration for each printer installation requirements) or interference in the process of data processing, can appear dislocation, garbled phenomenon, so, for the wide printer, must have high configuration of special computer, the computer also should have good grounding, not external other equipment, in the printing process, especially the print great image data, cannot undertake other work on the computer;
E. board, the quality problem, is not stable, especially the boards, such as image data processing, transfer, if poor contact or damage to the phenomenon of dislocation, the code will appear, at this point, the need to plug in the card, when necessary, to replace the board;
F. improper operation, illegal operation, the machine in the process of printing, if illegal operation, can interrupt the data processing and transmission, dislocation, appear easily garbled phenomenon, therefore, in the printing process, to perform and standardized operation;
G. skid car movement: if the car drive slippage, can make the starting point of each PASS, leading to the emergence of dislocation phenomenon, the need to change the related parts of the transmission device;
H. grating ruler problem: at the origin position, grating feet dirty or grating feet installed too low, cannot read data reading head, leading to the print head car anchor point, and then there will be a mismatch, the need to wipe or reinstall the grating ruler;
I. uneven cloth, severe dislocation: if the medium in the transmission,deviate, dislocation, will appear at this time, the need to correct the clamping device of medium and medium. Such as: Novajet changed, you may need to consider the following aspects: whether the grating ruler dirty, if reading head can read data, copper sets if you wear, if motor skid, mainboard if there's any problem.
(7)misting, virtual boundary
A.JiMo nozzle surface, paste head (see the solution and the reason of this phenomenon mentioned above).
B. the ink itself quality problem, the surface tension is too large, lead to drops on the surface of the print head "suspension without drops", spray Angle and spray, at this time should be timely replacement ink;
C. medium itself doesn't absorb ink: for medium doesn't absorb ink, leading to the accumulation of ink, flowing, virtual boundary, blurred images, like flying ink;
D. high sprinkler car: car height is too high, spin the trajectories of the ink, high speed movement, and the car drops off the predetermined placement, with outside influences (wind, vibration, etc.), under the condition of phenomenon is more obvious, so, on the premise of not affect other factors, try to reduce the height of the print head car;
E. nozzle voltage is too low, such as before mentioned in this paper, the piezoelectric print head, the working voltage of the size of the impact strength of the ink jet, if the voltage is too low, will make the ink drops.In the process of car high-speed movement, drops of trajectory is weak, leading to fly the ink;
F. work environment of the wind is too big: if the working environment of wind is too big, can lead to drops off a predetermined trajectory, produce the phenomenon misting.
(8)image is not easy to do: if they do not dry in time, which will affect the image quality and speed of production.
A.medium not absorbing ink: as I described, poor quality of medium or medium doesn't match with the ink is not easy to suck the ink, resulting in the image of slow dry, so try to avoid using poor quality medium;
B. The problem of the ink itself: some fast dry ink and poor permeability, causes the image is not easy to dry, the need to replace ink, or adopt method of artificial heating drying (such as: hair dryer, etc.);
C. heating failure or heating temperature is not enough: for a printer with a heating device, according to the actual use of the environment, set the heating temperature, if the heating equipment failure, should be timely maintenance;
D. indoor temperature too low or too high: indoor temperature is too low, will directly affect the speed of ink adhesion, affect the speed of dry, so, in the case of low ambient temperature, to configure air conditioning, heating and other equipment, such as: the winter in the north in China, the working space must maintain under the condition of normal temperature; In the case of the environment temperature is too high, you want to configure air conditioner, fan cooling equipment, such as in hot countries such as Thailand, India, for example, generally in the working space configuration and cooling equipment; In addition, humidity is too high, also will affect the drying speed;
E. improper image the ICC curve, ink is too big: if the ICC curve misallocation, and lead to large amount of ink, under the condition of normal print, in the picture is not easy to dry.
A. medium itself problem: not enough coating surface gloss, adhesion of medium, it is easy to make color piece fall off; B. the ink itself problem: the problem of ink composition, such as inferior, the ink is not fast, do not prevent UV, etc., it is easy to fade, so, for use in high temperature, strong ultraviolet region of the ink, there will be different to use ink components in other common areas. Such as: high temperature of countries and regions such as Thailand, India.
(10)Burn the print head
Print head burned in general can be summarized as: circuit cause burning, high temperature cause burning, etc., most of the piezoelectric print head burned because the former, most of the bubble print head burned because of the latter. The print head was burned, is generally unrecoverable, can only be scrapped, replace the print head, the reasons are:
A, the voltage is too high: the print head is in high load working condition for A long time, accelerate the aging of A piezoelectric crystal, tend to occur on piezoelectric print head;
B, electrostatic high: was handled, electrostatic machine is too high, not only affect the printing effect, but also damage the circuit part of the print head, especially under the condition of human body static electricity is too high, if direct contact with the print head, it will be very easy to damage the print head circuit part, so, not only the printer should have good and stable earthing, the operating personnel in case of contact with the machine and the print head, must be anti-static measures, such as: equipped with anti static electricity meter, etc.;
C, power supply "+" and "-" connect the: this belongs to the illegal operation, so, in the process of operation, as far as possible according to the standard operation, especially for the print head wide printer, not special circumstances, don't go to pull plug, so as to avoid incorrect operation;D, the corrosive ink or other liquid on the print head circuit boards: at this time, will cause a short circuit especially solvent ink, in the process of handling the print head, pay special attention not to touch in printing ink quotas
E, for a long time in the "dry" status: for most bubble print head, its working principle is through the internal fever crystal heating, heated to 300 degrees Celsius, in an instant drops volatilizes into bubble squeeze out and subsequent drops added in time, ensure the continuity of work. Actually, the subsequent drops along with a fever crystal cooling function, if because of the lack of ink, the fever crystal can not get the supplement of the subsequent ink continuously for a long time under high temperature (300 degrees Celsius), crystal caused by heating aging, burning, known as "burn the print head. :
in some cases, due to the surface of the nozzle is blocked, drops can't be ejected, crystal is heating heat can not be timely ink away, and make the heat accumulation around the heating crystal, also contributed to a state of "dry", accelerate the aging of crystal, after a period of time, will scorch.
Of course, there are many reasons that cause the "dry", according to the different types of print head structure to analyze the reason, but generally speaking, can be summarized as the following reasons: flat illiquid, impurities clogging the print head, ink screen pack, ink around the nozzle serious crystallization precipitation, ink sac serious deficient ink, etc.
Such as: Novajet print head machine, some domestic inside the print head has a lot of big grain impurity, after the ink flow, will adhere to the filter, blocked the ink (or the print head inside and outside pressure out of balance, or ink liquidity is very poor) can not be timely added little ink in the cavity, to get ink heating crystal, for a long time will burn head; Also, if the ink in the print head surface serious crystallization precipitation, lead to fail to heat dissipation, and burned the head.
F, wrong operation:
a.because the car bumped head, throw on the ground, the external shock damage circuit;
b. the print head circuit boards with metal impurities such as electric conductor, cause short circuit, which the print head. So, should take put down, light, properly keep the print head. Board, cable short circuit of
G, machines, such as: the print head control board, transfer board, data line, such as short circuit and cause burn the print head, the situation is not very common, but if in this situation, most will burn off more or a complete set of the print head;
H, use inferior ink: some inferior ink contains strong corrosive substance, such as corrosion of the internal components of the print head, cause burning head;
I, frequent replacement of using different brand ink: ink is mixed with different brand, will produce together, will be the print head filter completely closed, or condensed on the crystal, accumulate over a long period, make the print head work long time under high load, thus serious shorten its service life, due to "false". So, the special circumstances, can't literally to replace the ink.