Skip to main content

Aggregation Behaviors of Colloidal Particles for Production of Polyester-Based Chemically Prepared Toner

Buy Article:

$20.00 plus tax (Refund Policy)

Abstract:

High performance, full color electrophotographic printers are gaining acceptance in many office environments. In this study, we controlled the aggregation of three different colloidal dispersions using four different multivalent metallic coagulants over a wide pH range to develop a polyester-based chemically prepared toner (CPT). The quantity of the each metallic coagulant required to achieve a narrow particle size distribution at the target mean aggregate size reached an optimum operation limit that, when exceeded produced a viscous, inoperative, sludge in the reactor. The optimal pH condition for each coagulant system was mainly dependent on the electrostatic balance produced by the deprotonation of the exposed carboxylic acid groups on the polyester resin particles at a pH between 5.5 and 6.5. Additional electrostatic interactions between the polyester colloidal dispersions and the monovalent cation (M1+) metallic coagulation system at high electrolyte concentrations created a favorable environment to reproduce core-toner particles with a narrow particle distribution at the target mean size.

By manipulating the aggregation process, the individual nano-dispersions coalesced in an aqueous environment to form a polyester-resin based chemical toner that was uniform in particle size and had low total VOC level. The printing and image performance of this toner using a color laser printing system meet the specifications of major OEM printer engine manufactures.

Document Type: Research Article

Publication date: January 1, 2012

More about this publication?
  • 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.

  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Terms & Conditions
  • ingentaconnect is not responsible for the content or availability of external websites
ist/nipdf/2012/00002012/00000002/art00022
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more