发明授权
- 专利标题: Photographic paper with low oxygen permeability
- 专利标题(中): 低透氧度的照相纸
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申请号: US450746申请日: 1995-05-25
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公开(公告)号: US5695862A公开(公告)日: 1997-12-09
- 发明人: David John Lacz , Todd Richard Skochdopole , Larry Douglas Hagemeier , Anita Marie Fees , Brian Thomas , Gary John McSweeney
- 申请人: David John Lacz , Todd Richard Skochdopole , Larry Douglas Hagemeier , Anita Marie Fees , Brian Thomas , Gary John McSweeney
- 申请人地址: NY Rochester
- 专利权人: Eastman Kodak Company
- 当前专利权人: Eastman Kodak Company
- 当前专利权人地址: NY Rochester
- 主分类号: G03C1/775
- IPC分类号: G03C1/775 ; D21H17/36 ; D21H19/20 ; D21H27/00 ; G03C1/79 ; B32B7/02 ; B32B23/08
摘要:
The invention provides photographic paper having increased image stability. The invention is generally accomplished by forming a paper sheet, drying said paper in a first stage to below about 10 percent water, then applying a polyvinyl alcohol solution to both sides of said paper sheet, drying said paper in a second stage to below about 5 percent water, and then applying further polyvinyl alcohol solution to said paper and drying in a third stage. The paper then may be coated to form a silver halide photosensitive color paper. The paper contains between about 4 and about 6 weight percent of polyvinyl alcohol that is concentrated near the surface of said paper. Further, the paper has a oxygen leak rate of less than about 25 cc/m.sup.2 /day and an oxygen GTR rate of less than about 1 cc/m.sup.2 /day.
公开/授权文献
- US4480991A Process of and apparatus for operating a shaft furnace 公开/授权日:1984-11-06
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