Recording medium
AssigneeFuji Photo Film Co., Ltd.
InventorsJoseph Olijve, Akira Kase
Life of this patent
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Abstract
The present invention relates to a recording medium, in particular an ink-jet recording medium of photographic quality that has excellent ink absorption speed, good drying characteristics and a good image printing quality. According to the present invention an ink-jet recording medium is provided, comprising a support to which at least an underlayer and an overlayer is supplied in which the overlayer contains at least one type of modified gelatin and the IEP of the overlayer is different from the IEP of the underlayer. The present invention is further directed to methods for obtaining and using such a medium.
Claims23
A recording medium comprising a support and an ink-receiving layer adhered to said support, wherein the ink receiving layer is a multilayer comprising at least one overlayer and at least one underlayer, which underlayer is situated between said support and said overlayer, wherein said underlayer and said overlayer each comprise a gelatin and/or a modified gelatin, wherein the isoelectric point (IEP) of the gelatin or modified gelatin in the overlayer has a value that is different from the IEP value of the gelatin or modified gelatin of at least one of the underlayers.
A process for producing an ink-jet recording medium, comprising the steps of:
- preparation of one or more homogeneous aqueous mixtures wherein at least one mixture comprises a gelatin or a modified gelatin for one or more underlayer(s);
- preparation of at least one aqueous mixture comprising at least a (modified) gelatin with an IEP different from the IEP of the gelatin in one of the underlayers, for the overlayer;
- and
- coating said mixtures consecutively or simultaneously on a support, followed by drying the coated support.
Dependencies are inferred from the claim text.