Overview of Industrial Digital Printing

Abstract

There are many different methods by which to apply marks and codes either directly on product packages (primary packaging) or in cartons or cases of that product (secondary packaging). The following is an overview of different types of digital printing technologies used for industrial marking applications. The paper will explain the use of piezo drop-on-demand (DOD) ink jet with both phase change and liquid inks. Other ink containing systems that will be reviewed include continuous ink jet, valve jet, and thermal transfer. In addition, one non-ink containing digital marking method – a laser printing system- will also be discussed. The end user's choice of digital printing technology is determined by the application requirements of the product being marked, including: the size and shape of the mark or code, print speed, adhesion requirements, substrate, environmental requirements, and cost per print. The benefits and disadvantages of each technology will be discussed in relationship to these requirements.