Fun facts about printing on whiteboard paper

　　The arrangement of color sequence when printing on white board paper

　　① Place the darker colors first for printing, followed by the lighter shades. Since dark inks have strong covering power and excellent adhesion, printing them first ensures precise registration. Lighter inks, on the other hand, have weaker covering ability; if printed later and overprinted, even slight misalignment becomes less noticeable, resulting in much better overall registration quality.

　　Fun facts about printing on whiteboard paper

　　② Whiteboard paper has a high moisture content, so most printing companies proceed directly to machine printing without air-drying. However, they often pre-print a light coat of clean water before actual printing to minimize issues like fuzzing and shrinkage. Additionally, once cut, both finished and semi-finished whiteboard paper products are tightly covered with plastic sheets to prevent swelling and deformation caused by exposure to moisture.

　　③ For products printed on whiteboard paper—such as full-coverage solid areas combined with text, lines, and intricate patterns, including outer packaging like wine boxes, cigarette packs, food containers, gift boxes, and tote bags—it’s best to follow this color sequence when printing: Start by applying the text, lines, and patterns first, then finish with the solid background at the very end. This approach helps prevent issues like smudging, smearing, or reverse-side contamination caused by the thick, sturdy nature of whiteboard paper, which can lead to ink marks sticking together while the print is still wet due to physical contact during handling.

　　④ When arranging the printing color sequence, prioritize clearly—handle the more challenging colors first, followed by the easier ones. If you encounter overprints involving four-color halftone dots along with text, lines, and patterns, it’s best to start by performing the four-color electronic separation and dot-overprinting process. Only after that should you proceed with printing the text, lines, and patterns. This approach ensures greater accuracy and precision in the four-color registration, while also minimizing the impact of paper expansion or contraction.

　　Preventing smudging when printing on whiteboard paper

　　① Generally, whiteboard paper is often used for printing solid-color products, which naturally requires a larger ink volume. To minimize the risk of picking and smudging, it's crucial to carefully control both the ink viscosity and the thickness of the ink layer during printing—especially to prevent back-side contamination.

　　② Typically, a base color is printed first. This base color can be slightly diluted with the original ink used in the artwork, or it can match the original ink exactly. Afterward, the original ink is overprinted once more. This approach not only minimizes the "pulling" effect but also effectively addresses the issue of ink smudging when printing with full coverage in a single pass. Moreover, the two-layered printing process enhances the overall glossiness of the final print.

　　③ Coated paper has a rough surface, a loose texture, and high ink absorption, but poor flatness. Therefore, when printing solid areas across the entire sheet, it’s best to first apply a base color followed by darker shades. The base color should be slightly darker and applied more lightly, ensuring the ink density isn’t too heavy. However, if the coated paper exhibits good flatness—especially in the case of double-sided coated paper—when printing solid areas, you should start with the darker color and ensure ample ink coverage, stopping just before the back side starts to smudge. Afterward, carefully overprint a thin layer of the base color on top. This approach will result in a smoother, more polished printed product. Additionally, pay close attention to maintaining proper ink-water balance and carefully control the amount of moisture on the printing plate to achieve optimal results.

　　④ When printing with a higher ink volume, use the original ink from the container whenever possible, avoiding the addition of thinner. Instead, lightly incorporate a small amount of de-mulling agent or anti-sticking agent. In hot weather, do not add drying oil.