Printing Knowledge

Lithographic printing is based on the principle that oil and water do not mix. The image areas on the plate are oleophilic (ink-attracting) and hydrophobic (water-repellent), while the non-image areas must first absorb water to become hydrophilic and ink-repellent. One of the characteristics of offset printing is that it uses an indirect printing p…

Packaging Inspection for Paper
Currently, flat paper packaging primarily comes in two basic forms: wood clipboard packaging and wooden box packaging. Qualified flat paper usually has more than two layers of wrapping paper on the outside, further reinforced with wood paneling and tightly bound with metal straps. The wrapping materials used include w…

Someone asked online: "Why does the ink layer not appear bright enough when silver ink is overprinted with other colors on black paper?" Here are my thoughts and insights on this issue for reference.
The so-called "black paper" is a type of specialty paper, and its surface gloss is generally not very high. Therefore, when printing other ink colors …

In the WorldSkills competition for the Printing and Media Technology category, the "Digital Printing Color Matching" contest has emerged as one of the challenging aspects affecting the scores of participants in recent years. As a guiding teacher for the Printing and Media Technology project, I have devised an effective method to address the current…

3D printing, also known as stereoscopic printing, typically refers to stereolithography printing. It employs a principle that simulates the spatial difference perceived by human eyes, recording pixels of different angles and depths on photosensitive materials. With the combination of grating materials, it presents a three-dimensional effect or even…

Screen printing refers to the use of a mesh screen as a printing plate, which is made into a screen printing plate with images through photosensitive plate making methods. Screen printing consists of five main elements: the screen printing plate, squeegee, ink, printing table, and substrate. The basic principle of screen printing is that ink can pa…

Offset printing, an indirect printing method, is named after early lithography, which initially used stone plates. In early lithography, stone blocks were ground flat and used as plates. Later, this method evolved to use metal plates made of zinc or aluminum, but the principle remained the same.
In offset printing, there is no height difference bet…