Ink jet recording material and process for producing same
AssigneeOji Paper Co., Ltd.
InventorsBo Liu, Masami Kubota, Hiroyuki Nemoto, Shun-ichiro Mukoyoshi
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Abstract
An ink jet recording material having a high gloss and capable of recording thereon ink images having high color density and clarity, has an ink-receiving layer formed on a substrate and including a binder and secondary particle having an average size of 10 to 300 nm and including a plurality of primary particles of silica prepared by wet method and/or aluminosilicate agglomerated with each other without binder, and can be produced by forming the ink-receiving layer on a shaping base, bonding the substrate to the ink-receiving layer on the shaping base and separating the resultant laminate from the shaping base.
Claims20
An ink jet recording material comprising:
- a substrate;
- and
- an ink-receiving layer formed on at least one surface of the substrate, wherein the ink-receiving layer comprises a binder, and a plurality of secondary particles, wherein the secondary particles have an average secondary particle size of 10 to 300 nm, each of the secondary particles consisting essentially of a plurality of primary particles of at least one member selected from the group consisting of silica prepared by wet method, which silica will be referred to as wet method silica hereinafter, and aluminosilicate, and wherein the primary particles are agglomerated with each other to form the secondary particles by an attraction force including hydrogen bonding force between silanol groups located on the surfaces of the primary particles and van der Waals force between the primary particles, in each of the secondary particles, pores being formed between the agglomerated primary particles,
- the ink receiving layer having a haze value of 4 to 65%;
- and
- at least one additional ink-absorbent layer comprising a binder resin and a plurality of pigment particles being formed between the substrate and the ink-receiving layer.
Dependencies are inferred from the claim text.