VARITHERM

Image fuser units for laser document printers comprising a heating element and an electro-mechanical roller or belt for the purpose of fusing toner to paper, and embedded printer firmware for sensing media size and adjusting the image fuser unit heating to meet the media width, sold as a component of document printers for computers, laser document printers, single function and multi-function laser document printers, laser color printers for documents, computer printers for printing documents, and document printers