Technical White Paper: Review And Selection Of Direct Part Marking Methods

By Microscan Systems Incorporated

There are many methods to directly mark objects. Selecting the best method for the application is critical to achieving success. Each method has its own advantages and limitations. Since each method has its own advantages and limitations, it is important to review and experiment with as many methods as possible before selecting the best one for your application.

Electrochemical Etch: This process uses a low voltage current to mark the object surface. This is commonly used for low volume product runs.

Ink Jet: This type of marking uses small, dots sprayed directly onto the surface. Ink jet produces high contrast marks. Ink jet is not considered a permanent marking method.

Laser Etch: Lasers etch the symbol directly onto a surface. Clean, high resolution marks are produced making laser-etch well-suited for automated environments.

Dot Peen: Dot peen is a percussive marking method, using changes in depth to create marks. hhDot peen is recommended for applications where the symbol must last the entire life cycle.

On the following pages, a wide range of marking methods are discussed, including advantages and disadvantages.