Photosensitized plates are made with the use of light and radiant energy. In fact, if you were to look up the word “photosensitize” in the dictionary, you will find that this is an action where an item is sensitized to light or radiant energy. This makes such an object react in a specific way when exposed to these thing that the item was made sensitive to.
In the creation of photosensitized metal nameplates, the metal that is used is anodized aluminum, also known by the name Metalphoto®. This is a type of aluminum that has an anodic layer covering the print or copy that is found on top of the aluminum material. Copy is produced by embedding color dies into the pores of the aluminum surface and then sealed, creating a product that is far more durable than lithographed or silk-screened plates. Photosensitized nameplates are relatively low-cost in limited quantities, and can be produced quickly.
Metalphoto® is a special aluminum that is often utilized in the creation of durable and high-resolution plates, as well as control panels and labels. This particular metal creates durable images due to the fact that these are sealed within the metal, which makes it resistant to sunlight degradation, corrosion, high temperatures, abrasion, and even chemical exposure. This photographic marking technique can be used to create high resolution images as well as variable information like anti-counterfeit security features, machine readable barcodes, and serailzed information.
There are two general methods used in the creation of photo anodized aluminum plates, or photosensitive anodised aluminum plates. One involves the use of a silver compound which develops into a black, silver-based design or print. The other involves the use of a photo-resist, and is often the method used to create colored images onto anodized aluminum (although the first method can also have colored dyes added into its production).