In terms of digital printing paper for daily use points for attention, any a digital printing equipment will have a fit with their structure, performance and operation of the paper use the matters needing attention, if you need accurate to each machine and each kind of paper, then the number of digital printing machine should be how many a version of the paper use the matters needing attention.Therefore, this article lists only some universal paper use the matters needing attention, will be the following several aspects to elaborate.
A, the use of ordinary paper
Before using the digital printing equipment, should first read the paper manual, understand the demand for paper, namely applicable paper contains what standards, what is standard parameters of each standard.Usually need to conform to the standard of paper paper type, weight, packing material and paste three aspects of the standard, the first need to carry on the omni-directional test paper, test indexes including the following three points.
(1) the paper type.Through hardness, resistance, the characteristics of the double difference, water content, ash content (except pulp other component content), packaging and storage conditions, printed after bending, fixing adsorption ability of inky (permanent), paper feed nine indicators to check the paper type specified requirements is in line with the digital printing machine.
(2) the paper quantitatively.Usually the manual will have a printer available paper quantitative range.Use a lighter (or thinner) paper may cause tearing, paper feed hole rupture or error.Using quantitative heavier (or thick) paper may cause feed error (in paper is not smooth) or stain, from fall off into the paper, and so on and so forth, all of this is because the hardness of the paper is too high.In order to avoid these problems, be sure to use quantitative conformity with the provisions of this paper.
(3) the paper filler and pulp.If the quantity of filling ratio is too high, the pulp composition is too low, even if the paper quantitative conform to the specifications, the hardness of the paper is not appropriate.This will also cause the printer paper jam, incorrect folding or wrinkle.
So should be in strict accordance with the digital printing paper manual, conform to the scope of digital printing paper.
Second, the use of recycled paper
If you want to use recycled paper, please be sure to check the print quality and fold function in advance.These inspections for carton recycled paper has to be done.After check the above project, contact paper manufacturers, asking whether the recycled paper to keep consistent feature of the paper.
Need to pay attention to the following points when using recycled paper.
(1) with recycled paper easy be affected with damp be affected with damp, storage with moistureproof film, please.
(2) the recycled paper will produce a large amount of powder.The powder will adhere to the channel, drum wheel, sensor, feed device, which will produce all sorts of problems.So, be sure to always clean powder.
(3) due to the recycled paper is easy to be affected with damp be affected with damp and bending, and the hardness is low, so the recycled paper errors often occur in paper.
(4) too curved recycled paper may cause feed or pile of paper error.
(5) the low mechanical strength of the recycled paper may cause feed hole is damaged, incorrect folding or wrinkle phenomenon.
(6) is not smooth recycled paper can reduce the print quality.
(7) if contain different properties of recycled paper in a pile of paper, then the print quality may have differences.
Third, the use of special paper
Paper mills will continue to develop and sell all kinds of new type of special paper.In order to use these special paper, it is necessary to testing the product in advance.Common use some special paper the note below.
(1) the label paper
Label paper must be stored in temperature 15 ℃ ~ 32 ℃, humidity 40% ~ 70% of the environment, and must be used within one year after production.After they leave, label paper must use moistureproof film, or similar packaging as soon as possible, in order to prevent be affected with damp be affected with damp.The tangent of print quality may be reduced.Therefore, you must avoid in tangent part print.For reasons of printing precision, should be set aside 2 mm border.If the quality of label and back page or different thickness, fixing heating may cause paper curl.In order to avoid this kind of situation, labels and back page must adopt electrostatic printing paper, in this paper, there will be no obvious curly when heated.If the label paper stack too high, at the bottom of the paper adhesive may be squeezed out because of the weight stack.Therefore, it is necessary to maximum stack height consultation paper manufacturers.
(2) perforated paper
Perforated bump or have burrs may cause negative effect to the print quality.Therefore, to ensure that only use paper without bump and burrs.Design print format should avoid near the perforation of print.For reasons of printing precision, each hole should be set aside about 3.5 mm.
(3) the sealing paper envelope
Adhesive uneven error may lead to feed or a negative effect on printing quality.Therefore, we should avoid using this kind of problems of print media.Important data of print can't near the glue, should be set aside at least 3.5 mm border.If too much will seal the envelope stacked together, stack pressure may cause medium together, therefore, need to consult the manufacturer maximum stack height.Some seal the envelope, shorter than ordinary medium storage time, it also need to consult the manufacturer can deposit period and storage conditions.
(4) the letter type of medium (card)
Letter class both sides of the paper media type (postcards) (probably a) coated with adhesives.Due to the preprint environment for this kind of medium (e.g., ink type, color, quantity) is very strict, before the choose and buy please consult paper manufacturers.Every aspect of the print media are coated with pressure sensitive adhesive.Therefore, DangTu have adhesive surface after printing, the paste failed may be due to the bonding strength is not enough.In order to prevent this kind of problem, the design page should avoid in folding gluing the symmetric position of print content.
(5) color paper
Color paper than ordinary paper has a more smooth surface, because colorants and fixing agent (resin) into the paper fiber.Toner is not easy to penetrate into the paper fiber, therefore, toner fixing intensity is low.When fixing agent and low adsorption force between toner, toner fixing strength particularly low.If you must use color paper, need to carefully check the print conditions and printed in advance.
(6) the embossed paper
With company logo and other markers called embossing paper embossing paper.Paper each local thickness inconsistency or uneven could lead to a paper or a negative impact on print quality, need to carefully check the print conditions and printed in advance.
(7) coated paper
With a titanium oxide coating paper, kaolin, clay, or calcium carbonate is used as a light art paper, coated paper, coated paper or complete coating paper.Usually, low toner fixing strength of coated paper and print quality is low.Need to make an advance consultation paper printing coating paper manufacturers to confirm the print conditions carefully and printed.
(8) no carbon carbon paper
No carbon carbon paper is made up of able to induction pressure of 3 parts.On the contact printing presses, no carbon carbon paper can realize synchronous print.Pressure induction medium can transfer printing content to the second and third part.When using non-contact printing presses, all three parts to print respectively, then bound together.No carbon carbon paper every part is very thin, easily into the paper or pile of paper error, or because of melting temperature factors paper pressure induction medium, so before a large number of printing no carbon carbon paper, condition evaluation must complete spare part replacement and maintenance.
Fourth, avoid the use of paper
The inadaptability of paper consists of a series of factors, will reduce the print quality or trigger some abnormal feed errors, had better not use these types of paper:
(1) incorrect folding paper;
(2) tear the paper or paper with irregular holes;
(3) short of bad paper edges;
(4) bent, wrinkled, ups and downs or sunken paper;
(5) tilted paper;
(6) with a small scraps of paper and the external object of the paper, such as wax, sheet metal, glue, resin, etc.);
(7) specialty paper with glue or tape.
Five, the paper storage
In addition to pay attention to when using the paper type, paper, quantitative, etc. And the performance of the digital printing machine suit, also cannot ignore daily paper storage box, if stored improperly, can cause paper distortion, and will directly affect the effect of printing products, or cause printing fault.
First of all, the paper cannot be placed directly on the floor.Placed directly on the floor will result in the paper to be affected with damp be affected with damp.Please send the carton placed on a flat, flat rack shelf layer or drag on the stage.In order to prevent deformation of the paper, also do not place too much paper stack with each other.Stacking height shall not be greater than 1 m.In order to prevent paper drying or be affected with damp be affected with damp, it is better to place the paper in the sealed box 10 ℃ ~ 30 ℃, and keep the relative humidity is 40% ~ 50%, the highest drying temperature is 29 ℃).
When opened the box found that paper does not have waterproof storage conditions, please place the cartons with waterproof measures appropriate to the environment.Suggestions of environment temperature 15 ℃ to 25 ℃, relative humidity 30% ~ 70%.Even in have prevent dry and damp environment, the paper cannot be placed too long (more than 6 months).Cartons once opened, the paper must be with waterproof membrane, in order to prevent becoming too dry or be affected with damp be affected with damp.The paper should not be subjected to sudden temperature changes, in order to prevent becoming too dry or be affected with damp be affected with damp.Best can be used prior to the site, and open some buffer time.
(Gold Printing Group) |
