Controlling bending stiffness in photographic paper
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United States of America Patent
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Mar 30, 1999
Grant Date -
N/A
app pub date -
May 23, 1997
filing date -
May 23, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method of providing a photographic imaging element having a bending stiffness between 150 and 250 millinewtons and a caliper thickness between about 0.18 mm and about 0.28 mm, comprising providing a laminated base sheet comprising a paper sheet having a Young's modulus of between about 13800 MPa to 2760 MPa in the machine direction and a Young's modulus of 6900 MPa to 1380 MPa in the cross direction, and having a biaxially oriented sheet on each side of said paper sheet having a Young's modulus of 690 MPa to 5520 MPa in the machine direction and a Young's modulus of 690 MPa to 5520 MPa in the cross machine direction and coating said laminated base sheet with photosensitive layers.
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