A HP Indigo press is a digital printing press that uses HP's proprietary inkjet technology to print high-quality, full-color images on a wide variety of materials.

It is widely used for short-run, on-demand printing of items such as business cards, brochures, booklets, and other marketing materials.

One of the key features of the HP Indigo press is its ability to print on a wide variety of substrates, including paper, cardstock, synthetic materials, and more. It also uses a 7 or 8 color process, which allows for a wider range of colors and more precise color matching than traditional 4-color process printing.

The press also uses HP's ElectroInk technology, which is a liquid ink that is made of small pigment particles suspended in a liquid vehicle. The ink is jetted onto the substrate and then dries immediately, resulting in a high-quality, smudge-proof image.

Another feature of the HP Indigo presses are the automation capabilities, which include digital front end, inline finishing and automation software that enables to reduce human intervention, increase productivity and improve the overall print quality.

Overall, the HP Indigo press is a versatile, high-quality digital printing solution that is well-suited for a wide range of printing applications, especially for short runs and variable data printing.