*NEWS*VISCOMETER KEEPS TONER PROD RUNNING

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*NEWS*VISCOMETER KEEPS TONER PROD RUNNING

 user 2006-07-11 at 10:34:00 am Views: 83
  • #15955

    Viscometer Keeps Toner Production Running
    Viscosity
    is not usually a property associated with the highly-staining powdered
    ink toner used in printers and photocopiers.Viscosity is not usually a
    property associated with the highly-staining powdered ink toner used in
    printers and photocopiers. But an intrinsically safe XL7 on-line
    viscometer from Hydramotion is said to be playing a key role in keeping
    the production lines running for a toner producer. Toner consists of
    pigment particles encapsulated in a thermoplastic resin.In a
    photocopier or printer, the toner is transferred electrostatically to
    the paper, which then passes between a pair of heated rollers.The toner
    particles melt and fuse with the paper fibres to produce the finished
    image.The electrical charge and fixing characteristics of the toner are
    largely determined by the resin, which is typically a styrene-acrylic
    copolymer.In the production of polystyrene the degree of polymerisation
    directly affects its viscosity, which in turn determines the quality of
    the final product.According to Hydramotion, careful monitoring of
    viscosity is, therefore, essential throughout the production
    process.The toner company’s research department recommended Hydramotion
    and the XL7 is said to be easy to install and simple to operate,
    requiring virtually no maintenanceIt is also said to provide a
    continuous real-time read-out on a dedicated signal processor, as well
    as 4-20mA analogue and RS232 serial data outputs.As the polymerisation
    is carried out in a hazardous area at 200 degrees C, Hydramotion
    supplied an intrinsically safe version of its standard high-temperature
    instrument, enabling production staff to track polymer viscosity during
    the whole production process.The viscometer has given managers a much
    higher level of control over the process than was previously possible
    and the reduction in downtime has led to substantial savings, added the
    company.One of the engineers at the toner company’s site, said: ‘It
    operated fine.We now have continuous read-out of product property.’ for
    the company.