Abstract: The present invention relates to a porous membrane comprising multiple layers, at least one type of curable compound and at least two types of photo-initiator, wherein at least two layers each contain a the different photo-initiator. The invention further relates to recording media which comprise the porous membrane of the invention, as well as to processes for producing the membrane and the recording media.

Abstract: The present invention relates to a porous membrane comprising multiple layers, at least one type of curable compound and at least two types of photo-initiator, wherein at least two layers each contain a the different photo-initiator. The invention further relates to recording media which comprise the porous membrane of the invention, as well as to processes for producing the membrane and the recording media.

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 and an ink-receiving layer which has an asymmetric membrane structure comprising a dense top layer adjacent to a microporous sublayer, said ink-receiving layer comprising at least one water-swellable polymer. The present invention is further directed to methods for obtaining such a medium.

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 underlayer is a multilayer of sublayers, comprising a mixture of gelatin and at least one type of water soluble polymer, wherein the sublayer farthest away from said support comprises a lower ratio of gelatin/water soluble polymer, compared to the ratio in the sublayer(s) nearer to the support. The present invention is further directed to methods for obtaining and using such a medium.

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 specific type of modified gelatin. The present invention is further directed to methods for obtaining and using such a medium.

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 a (micro-)porous, water-swellable layer is adhered. The present invention is further directed to methods for obtaining such a medium.

Abstract: The invention is directed to an ink jet recording medium comprising at least: a support, and a microporous film adhered to said support, wherein said microporous film is characterised by: an oriented thermoplastic film comprising at least a filler, said film having interconnecting channels between the pores, with a void volume between 30 to 80 volume percent of the total microporous film, and having a volume of pores with a pore diameter between 50 nm and 1000 nm of less than 60 volume % of the total void volume of said microporous film, as determined by the mercury intrusion porosimetry method.

Abstract: A dispersing method carried out in a liquid feeding system includes passing a dispersing medium containing an oil droplet type emulsified material at a flow rate of not less than 5 cc/cm.sup.2.min through a filter with a plurality of pores having such a size as to permit an oil droplet type emulsified material having a predetermined particle diameter to pass therethrough to reduce the size of the coarse particles of the oil droplet type emulsified material to below a predetermined particle diameter. The dispersing method is particularly suitable for use in the production of photographic layers.