Introduction to Common Printing Techniques

Things to Consider When Designers Create Print Files

Designers need to prepare print-ready files that can be used directly without the need for flipping.Designers and print solution designers often find themselves puzzled when initially engaging with printing factories. They wonder, as designers, whether it is sufficient to understand basic printing concepts and principles. What relevance do the characteristics and differences of each printing technique have to their actual work?

Understanding printing principles and techniques is essential for designers and print solution designers, with two primary reasons:

Developing correct print solutions
Avoiding printing risks

Print solution designers need to develop reasonable print solutions based on client requirements and budgets. Understanding printing principles and techniques helps them choose appropriate printing methods, materials, and processes, while providing accurate cost estimates.

Print solution designers need to be aware of potential risks during the printing process and take measures to mitigate them. For example, they need to consider factors such as material compatibility, complexity of printing techniques, and production capabilities of printing factories.

Through this article, designers will gain insight into the characteristics, principles, practical applications, and document requirements of commonly used printing techniques in large printing factories.




Offset Printing

offset printing
Offset printing is a method of using a flat printing plate to transfer ink onto a substrate. It is widely used in various commercial printing applications and is also known as "indirect printing."

Applications

Offset printing is extensively used by large printing companies to develop reasonable print solutions based on client requirements and budgets. Understanding printing principles and techniques helps them choose appropriate printing methods, materials, and processes, while providing accurate cost estimates.

Characteristics and principles

Both text and non-text areas are almost on the same plane.
Ink is retained only in the text and image areas, using the principle of oil-water repulsion.
The most common printing method is offset lithography.

Letterpress Printing

letterpress printing
Letterpress printing transfers ink onto a substrate using raised text and image elements. It is one of the oldest printing methods.

Applications

Letterpress printing is commonly used for books, magazine covers, and specialized printing, such as business cards and greeting cards.

Characteristics and principles

Text and image elements are raised, higher than non-text areas.
Ink is applied only to the raised portions and transferred to the substrate through pressure.
Document requirements: Designers need to prepare print-ready files that can be used directly without the need for flipping.

Gravure Printing

cylinder lithographic press
Gravure printing is a method in which text and image elements are recessed, and ink is filled into the recessed cells and transferred to the substrate through pressure.

Applications

Gravure printing is used for banknotes, stamps, and high-end packaging printing due to its high anti-counterfeiting properties and artistic expression.

Characteristics and principles

Textext and image elements are recessed, and ink is filled into the recessed cells.
Ink is transferred to the substrate through pressure.

Document requirements

Designers need to prepare print-ready files that must be reversed, meaning the text and images should be white, while the background should be black.

Screen Printing

screen printing
Screen printing uses a mesh screen to transfer ink onto a substrate through squeezing.

Applications

Screen printing is used for printing on T-shirts, phone cases, advertising signs, circuit boards, ceramics, glass, and more.

Characteristics and principles

Suitable for printing on various materials and sizes.
Ink is squeezed through the mesh screen to achieve printing.
Document requirements: Designers need to prepare print-ready files that require hollow areas, meaning the parts to be printed should be retained while the non-printing areas should be hollowed out.

Digital Printing

Digital printing directly prints digital images onto substrates without the need for printing plates.

Applications

Digital printing is suitable for various occasions that require fast, efficient, and personalized printing, such as business cards, posters, and short-run book printing.

Characteristics and principles

Higher per-page cost but no need for printing plates, making it suitable for short-run printing.
Digital images are directly sent to the printer, and ink is sprayed or laser-illuminated to form the text and images.

Document requirements

Digital printing design files typically use final draft files where both text and images are displayed normally.