Nippon Paper Industries Co., Ltd.

Other

Teiichi Otani

Atsushi Ono

Noboru Kondo

Hiroyuki Onishi

Masaya Shibatani

Takashi Ueno

Yoshihiro Kuroyama

Jun Sugiyama

Shinya Yamagata

Akinobu Chatani

Yoshifumi Iimori

Hiroki Midorikawa

Norihumi Tanaka

An ink-jet recording material having on a support at least one ink-receiving layer comprising pigment and binder, which further contains in the uppermost layer of the ink-receiving layers at least one water-soluble acidic or neutral salt selected from the group consisting of aluminum salts, magnesium salts, sodium salts, potassium salts and zinc salts, and thereby acquires suitability for an ink-jet recording process using pigment ink.

Ink-jet recording material suitable for pigment ink

An ink jet recording medium is provided which can be excellent in the ink-absorbing property, showing a high coloring property of images, and capable of printing images of a high image quality without causing color unevenness even by bidirectional printing using a high-resolution printer. An ink jet recording medium in the case of carrying out bidirectional printing using a printer of a serial system wherein inks of at least two colors are mounted in carriages and the nozzle row is disposed in parallel with the main scanning direction of a head, wherein the recording medium comprises a base material and an ink-receiving layer, the ink-receiving layer has an average ink-absorbing capacity of from 10 to 30 cc/cm , and the contact angle of the uppermost surface layer of the ink-receiving layer is from 20 to 60 degree to an ink having a surface tension of from 25 to 72 dyn/cm, is also provided.

Ink jet recording medium

An ink-jet recording material having on a support at least an ink-receiving layer, with the ink-receiving layer being comprised of a light resistance-imparting layer as a lower layer and a coloration layer as an upper layer. Herein, the light resistance-imparting layer comprises a light-resistance imparting chemical constituted of 1 to 10 parts by weight of a benzotriazole compound as ultraviolet absorbent, 1 to 8 parts by weight of magnesium sulfate and 1 to 10 parts by weight of zinc oxide in combination with 100 parts by weight of an ink absorbing pigment, and besides, the coloration layer contains no light resistance-imparting chemicals.

Ink-jet recording material

A recording material for ink-jet recording, having on a support a light resistance-imparting layer containing a light resistance-imparting chemical and an image-forming layer free of a light resistance-imparting chemical, which are provided in the order described.

Recording material for ink-jet recording

An ink-jet recording material having on at least one surface of a base paper at least one ink-receiving layer comprising pigment and binder, with the ink-receiving layer having a rough texture specified by a surface roughness of at least 9.0 &mgr;m when measured with a PARKER PRINT-SURF measurement device (PPS) under a soft packing condition of 5 kgf/cm , a surface roughness of at least 7.0 &mgr;m when measured with PPS under a soft packing condition of 10 kgf/cm , a center-line average roughness (Ra) of at least 3.0 &mgr;m and an Oken-type smoothness of at most 30 seconds, thereby creating an atmosphere of paintings or calligraphic works in the images printed thereon.

An ink jet recording paper, which is excellent in ink absorbency and color-developing properties and has dull-tone glossiness, comprising an ink-receiving layer and at least two colloidal silica layers applied successively onto a support, each of said colloidal silica layers comprising chain colloidal silica as a main ingredient, wherein at least the colloidal silica layer contacting the ink-receiving layer contains no binder and has a coverage of about 1 to 3 g/m , and the coverage of other colloidal silica layer is about 1 to 6 g/m .

Ink jet recording paper and the production thereof

An ink jet recording paper having on at least one side of a base paper at least two ink-receiving layers which each comprise a pigment and a resin as main components; the topmost layer of said ink-receiving layers having a thickness of 5 &mgr;m to less than 25 &mgr;m and a density of 0.4 g/cm,to 0.6 g/cm,and the ink-receiving layer arranged underneath said topmost layer having a density higher than the density of the topmost layer by 0.05 g/cm,to 0.5 g/cm,, thereby acquiring high suitability for full-color ink jet printer of photo type.

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Tokyo, Japan

Teiichi Otani