INK JET

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Tantalum Targets
Tantalum-Aluminum Alloys
Al-Cu Alloy
Gold Targets

Ink Jet Printer Head

"Ink Jet" printing also known as "bubble jet" printing has gained wide acceptance in the consumer and commercial market. The true vivid color capability, consistent quality of the printed material and above all, the low cost of ink jet printers are driving its ever-increasing use in the consumer market. The proliferation of need to print out information retrieved from Internet and digital photography is ever expanding the usage of ink jet printers. Hewlett Packard, Lexmark, Canon are the dominant ink jet printer manufacturers in the world. There are other types of ink-based printers but they are based on piezo technology, such as the printers supplied by Epson.

The technology of ink jet printing involves integration of fluid mechanics, advanced materials, and advanced ink formulation chemistry. The mechanism involved in ink jet printing in simplistic terms is as follows: ink contained in a reservoir is heated electrically using a resistor material, which results in the formation of "bubbles" in the ink. The bubbles coalesce together and form one large bubble. This bubble is pushed out of a very fine sized nozzle (printer head) under the high pressure developed inside the ink reservoir. This causes in the spraying of ultrafine picoliters of ink droplets in the form a "jet" on to the paper. Thus the name "ink Jet" or "bubble Jet" printing. The ink jet heater is composed of multilayer of thin films of various materials, needed for the successful operation of the printer head. The thin film heater and other material stack used are deposited by using Physical Vapor Deposition or sputtering processes. The materials used to form the heater thin film stack, include Tantalum, Tantalum Aluminum alloy, Aluminum Copper alloy, and Gold.

Praxair MRC is world's leading supplier of the targets and "bonding technology"used in the PVD fabrication of ink jet printer heads, optimizing these materials for inkjet performance.