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Zašto postoji razlika u boji tokom offset štampanja

Vrijeme: 2019-12-20 Pogodi: 76

Zašto postoji razlika u boji tokom offset štampanja

Because after the offset printing packaging printing Proizvode, nivo uzorka je dobar, texture is strong, color is rich, trenutno štampanje ambalaže ili velika većina ofset štampanja. Modern offset printing machine multi - color one - efikasnost formiranja vremena, favored by customers. Međutim, offset printing also has a fatal weakness - compared to other printing methods easy to produce chromatic aberration. Ima visoke tehničke zahtjeve za operatere ofset štamparije, especially the control of ink balance, especially the standardized data operation.

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Kao packaging printer, we must pay attention to the color difference in offset printing, pažljivo analizirati uzroke razlike u boji, i poduzeti učinkovite mjere kako bi ga prevazišli.

1. Efekat papira na boju

1) Bjeloća različitog papira na boji sloja tiskanja stiska pokazuje različite efekte.

2) The gloss of printed matter depends on the gloss and smoothness of the paper. If the gloss and smoothness of the paper is high, we observe that the color is basically reflected through the ink layer, the main color saturation is high.

3) The same color of the ink, pod istim uvjetima, printed to the absorption of different paper will have different gloss and color printing.

2. Učinak obrade površine papira

Packaging printing in addition to printing, there are a lot of post-press processing technology, which is a considerable part of the paper surface treatment, including film (light film, subfilm), glazing, calendering, Ulje, Svetlo, i tako dalje. Printed matter after these surface treatment, postojat će različiti stepeni promjena boja. Stoga, kao ambalaža offsctdruckereien štampana materija, ako postoji post-press proces obrade, post-press processing must be considered into the physical and chemical changes, so as to determine the density of the ink layer and L*a*b*.

3. Operacija procesa štampanja

Utjecaj vrijednosti suhe regresije, wetting fluid size, brzina ispisa, pritisak ispisa.

4. Efekat lošeg štampanja

Štampana ploča je jedna od kvaliteta kopije. U procesu štampanja, only the plate of good reducibility, deformacija, wear and tear to ensure a better layout of ink transfer stability.

5. U Efekat of bad roller

OffPostavi tehnologija štampanja, štampanje može dobiti uniformno tilo, cots quality ima vrlo vaznu ulogu. There are three kinds of cots: transfer roller, uniform roller and inking roller. The roller's elasticity, viscosity, center, hardness and surface finish, u velikoj veličini odrediti kvalitet tiska ćilima.

6. The effect of light source characteristics

Offset printing in the observation of color must have a light source, no light can not see the color, ali ako karakteristike izvora svjetlosti nisu iste, then the color difference will be very big. Općenito, our requirement is to view color in natural light (i.e. standard light source). If the use of ordinary light bulbs as a source of color, onda će boja izgledati žuto, it is difficult to accurately identify the color, završna štampa će proizvesti ozbiljne kose boje.

7. The effect of ink blending

Ambalaža offPostavi in addition to four color ink, there are also monochromatic ink. Monochromatic ink is generally required to print their own deployment. Onda, moramo zabilježiti svaki proporcija formula za tinku za štampanje, da imaju kontrolu podataka - snimite ime proizvoda ćinom, dosage. 

8. The effect of bad equipment

Keep the machine good performance, is to improve the quality of printing ink reliable guarantee.

In short, the reason of color difference, we must combine the actual work of the situation, analysis and study, find out the solution, make the packaging of offset printing products as much as possible to reduce the chromatism, guarantee in allowed within the prescribed scope of color, to improve the packing quality of offset printing products, to meet customer demand for us.

Za više informacija o BPC Book Printing, molim vas obratite pažnju na www.bookprintingchina.com.