väriylitys

Väriylitys, often translated as color bleed or color spreading, is a printing phenomenon that occurs when ink unintentionally spreads outwards from the intended edges of a printed area. This can happen during the printing process due to various factors. One common cause is the absorption of ink into the paper fibers, causing the ink to migrate beyond the boundary of the image or text. Another contributing factor can be excessive ink application, where more ink is laid down than the paper can hold, leading to overflow.

The physical properties of the paper and ink play a significant role. Highly absorbent papers are more prone to color bleed than coated or less porous materials. Similarly, inks with lower viscosity may spread more easily. In offset printing, factors like ink tack and the pressure applied by the printing rollers can also influence the extent of väriylitys. In digital printing, issues with toner adhesion or laser transfer can sometimes lead to similar effects.

The visual impact of color bleed can range from subtle softness at the edges of printed elements to noticeable blurring and loss of definition. This can detract from the overall quality and clarity of the printed material, especially in designs that require sharp lines and precise color separation, such as intricate graphics, small text, or barcodes. Managing väriylitys is an important aspect of print production, often addressed through careful selection of paper and ink, as well as precise calibration of printing equipment and processes.