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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relative humidity
air
temperature

Cite this

Kiuru, J., Ketoja, J., & Tanaka, A. (2003). Dynamical Curl of Paper in Copying. Paper presented at 4th International Conference on Mechanics of Time-Dependent Materials, Lake Placid, United States.
Kiuru, Jani ; Ketoja, Jukka ; Tanaka, Atsushi. / Dynamical Curl of Paper in Copying. Paper presented at 4th International Conference on Mechanics of Time-Dependent Materials, Lake Placid, United States.2 p.
@conference{12ab65f73dfa44bd9a26738536aa1886,
title = "Dynamical Curl of Paper in Copying",
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.",
author = "Jani Kiuru and Jukka Ketoja and Atsushi Tanaka",
year = "2003",
language = "English",
note = "4th International Conference on Mechanics of Time-Dependent Materials ; Conference date: 07-10-2003 Through 10-10-2003",

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Kiuru, J, Ketoja, J & Tanaka, A 2003, 'Dynamical Curl of Paper in Copying', Paper presented at 4th International Conference on Mechanics of Time-Dependent Materials, Lake Placid, United States, 7/10/03 - 10/10/03.

Dynamical Curl of Paper in Copying. / Kiuru, Jani; Ketoja, Jukka; Tanaka, Atsushi.

2003. Paper presented at 4th International Conference on Mechanics of Time-Dependent Materials, Lake Placid, United States.

Research output: Contribution to conferenceConference articleScientific

TY - CONF

T1 - Dynamical Curl of Paper in Copying

AU - Kiuru, Jani

AU - Ketoja, Jukka

AU - Tanaka, Atsushi

PY - 2003

Y1 - 2003

N2 - 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.

AB - 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.

M3 - Conference article

ER -

Kiuru J, Ketoja J, Tanaka A. Dynamical Curl of Paper in Copying. 2003. Paper presented at 4th International Conference on Mechanics of Time-Dependent Materials, Lake Placid, United States.