Fixing belt and method for evaluating it

Details Fixing belt and method for evaluating it Fixing belt and method for evaluating it

2005-03-01

2005-03-01

Loney, Donald J. (Department: 1772)

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

C428S172000, C428S192000, C399S329000

Reexamination Certificate

active

06861124

ABSTRACT:
Disclosed are a fixing belt and a method for evaluating it in which an occurrence of crumple can be prevented by means of accurate evaluation whether a surface of the fixing belt has a appropriate flexibility or not.In this method for evaluating, a universal hardness test is achieved for the fixing belt in which an elastic layer and a mold releasing layer are laminated on a substrate, the fixing belt is judged as an acceptable product if a creep value CHUis included within a range of 0.40≦CHU≦3.50(%) when a creep value CHUwhich is measured from the mold releasing layer side is defined by a formula below.in-line-formulae description="In-line Formulae" end="lead"?CHU=(h2−h1)/h1×100(%)in-line-formulae description="In-line Formulae" end="tail"?where h1is a pushed depth (mm) when a test load reaches a predetermined value which is kept for a predetermined period of time, andh2is a pushed depth (mm) when a predetermined period of time is elapsed after the test load is removed.

REFERENCES:
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patent: 6618573 (2003-09-01), Ishikawa et al.
patent: 6647238 (2003-11-01), Takagi et al.
patent: 6-318001 (1994-11-01), None
patent: 10-274894 (1998-10-01), None
patent: 2001-282033 (2001-10-01), None

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