Periodic Development of Xerographic Background: A Case History
Abstract:Xerographic background development is normally associated with toner charge-related issues such as low or wrong-sign charge. Frequently, for two-component developers, carrier or toner aging effects create an increasing level of xerographic background with print count. In the present study, however, a single nominal toner composition was found to give a wide range of background development performance from toner batch-to-batch, even for new developers. For the most extreme toner examples, the rate of background generation was high enough to send almost half of the dispensed toner directly to the cleaning subsystem of a test print engine. From a comparison of print test assessments with a toner production timeline, the periodic background performance was traced to a variation in the quality of a component monomer used in the manufacture of the toner binder resin. While this chemical root cause had no effect on the average q/m value of the test toners, it did create differences in toner-to-toner charging performance, and charge spectra taken from toner-to-toner charging tests proved to be sensitive enough to rank toners according to their compatibility.
Document Type: Research Article
Publication date: January 1, 2006
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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