Chemically Produced Toner Containing a Binary Polyester Binder
Abstract:The fuser roller is commonly used in electrophotograhic machines such as copiers, laser printers and multifunctional printers to fix toner image on paper. For improving printing speeds, image gloss and energy consumptions, an increasing number of printers are designed to adopt polyester toner. Polyester toner, with its low fusing temperatures, is aimed to accommodate fuser rollers operated at low temperatures to reduce energy consumption. Although polyester toner has the above advantages, low fusing temperatures on the other hand can cause hot-offset defects on the fuser roller. This paper reports the study of chemically produced toner (CPT) consisting of a binary polyester binder. The toner was prepared by phase-separation/aggregation (PSA) method. It was found a balance of low-temperature fixing and anti-offset characteristics can be achieved by incorporating a binary polymer mixture of low- and high-molecular weight polyesters. The addition of wax was also used to provide an option to tune the fixing and anti-offset characteristics. Wax content, however, was found to exhibit some threshold value, above which wax tends to separate from the toner and the resultant wax leaks can contaminate associated printer parts to cause streaking defects.
Document Type: Research Article
Publication date: 2008-01-01
For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.
Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.
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