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Browse Prior Art Database

RECORDING SHEETS

IP.com Disclosure Number: IPCOM000027382D
Original Publication Date: 1996-Aug-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 4 page(s) / 178K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a recording sheet which comprises a substrate and an image receiving coating situated on at least one surface of the substrate, the coating containing an additive selected from the group consisting of macrocycles, porphines, and mixtures thereof, the image receiving coating being suitable for receiving images of an aqueous ink.

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XEROX DISCLOSURE JOURNAL

RECORDING SHEETS

Proposed Shadi L. Malhotra Classification

U. S. C1.428/341 Int. C1. B41M 05/00

Disclosed is a recording sheet which comprises a substrate and an image receiving coating situated on at least one surface of the substrate, the coating containing an additive selected from the group consisting of macrocycles, porphines, and mixtures thereof, the image receiving coating being suitable for receiving images of an aqueous ink.

The substrate can be transparent or opaque, and comprised of a natural or synthetic resins, cellulosics, and the like materials. An exemplary example follows.

Transparency sheets were prepared as follows. Blends of 70 percent by weight hydroxypropyl methyl cellulose (K35LV, obtained from Dow Chemical Co.) and 30 percent by weight of various additive compositions, each obtained fi-om Aldrich Chemical Co., were prepared by mixing 56 grams of hydroxypropyl methyl cellulose and 24 grams of the additive composition in 1,000 milliliters of water in a 2 Liter jar and stirring the contents in an Omni homogenizer for 2 hours. Subsequently, the solution was left overnight for removal of air bubbles. The blends thus prepared were then coated by a dip coating process (both sides coated in one operation) by providing Mylar@ base sheets in cut sheet form (8311 inches) in a thickness of 100 microns. Subsequent to air drying at 25°C for 3 hours followed by oven drying at 100°C for 10 minutes and monitoring the difference in weight prior to and subsequent to coating, the dried coated sheets were each coated with 1 gram, 10 microns in thickness, on each surface (2 grams total coating weight for 2-sided transparency) of the substrate. For comparison purposes, a transparency sheet was also prepared in which the coating consisted of 100 percent by weight hydroxypropyl methyl cellulose and contained no additive composition.

The transparency sheets thus prepared were incorporated into a Hewlett-Packard 500-C color ink jet printer containing inks of the following compositions:
Cyan: 15.785 percent by weight sulfolane, 10.0 percent by weight butyl carbitol, 2.0 percent by weight ammonium bromide, 2.0 percent by weight N-cyclohexylpyrrolidinone

XEROX DISCLOSURE JOURNAL - Vol. 21, NO. 4 July/August 1996 263

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RECORDING SHEETS (CONT'D)

obtained from Aldrich Chemical company, 0.5 percent by weight tris(hydroxymethy1)aminomethane obtained from Aldrich Chemical Company, 0.35 percent by weight EDTA (ethylenediamine tetra acetic acid) obtained from Aldrich Chemical Company, 0.05 percent by weight Dowicil 150 biocide, obtained from Dow Chemical Co., Midland, MI, 0.03 percent by weight polyethylene oxide (molecular weight 18,500), obtained from Union Carbide Co.), 35 percent by weight Projet Cyan 1 dye, obtained from ICI, 34.285 percent by weight deionized water.

Magenta: 15.785 percent by weight sulfolane, 10.0 percent by weight butyl carbitol,...