Dynamical Curl of Paper in Copying

    Research output: Contribution to conferenceConference articleScientific

    Abstract

    We studied the curl of paper in copying by carrying out experiments with a special device where roller speed and temperature can be controlled. In addition to curl, we measured the moisture loss of paper in the hot nip. The moisture loss and nip dwell time were two important parameters setting the curl level. Stable curl values were obtained only immediately after the nip or when the copied paper has been air-conditioned back to an equilibrium with the surrounding relative humidity. In between these two limits, transient curl values varied among parallel experiments and were very sensitive to asymmetry in paper structure. We observed relaxation of the curl when paper was kept flat in storage for a long time. However, a large part of the relaxed curl recovered back when paper was again let freely deform.
    Original languageEnglish
    Number of pages2
    Publication statusPublished - 2003
    MoE publication typeNot Eligible
    Event4th International Conference on Mechanics of Time-Dependent Materials - Lake Placid, United States
    Duration: 7 Oct 200310 Oct 2003

    Conference

    Conference4th International Conference on Mechanics of Time-Dependent Materials
    CountryUnited States
    CityLake Placid
    Period7/10/0310/10/03

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