The Studies On The Record And Conservation Of Photo Ink-jet Papers And Coating Properties

The current status of development, the preparation and application of ink-jet technology and glossy digital color ink-jet paper in and abroad were summarized in this paper. Meanwhile, the coating formulations and coating technologies were discussed in order to improve the recording and preservation properties of the glossy digital color ink-jet paper. As a result, main researches were carried out as follows:1. Coating technologiesCoating for three times, and the coating weight was 8~10 g/m2 each time. The basic coating was for smoothness, the second coating for ink-absorption and the third for gloss. The electric hot plate drying was used for the first and second coating , at 105℃, 3min;while the last coating were dried by cast coating, at 85～90℃, 3min, the pressure of cast coating for once was 500N/m. The base coating papers were calendared.2. COATING FORMULATIONS(1) Basic coating formulations solid contents: CaCO3=46%, PVA=10% CaCO3:PVA=3/1, dosage of CMC (to pigment)=1.0%, and less anti-foams and so on.(2) Ink-absorption coating formulations Mic-SiO2/PVA=2/1, dosage of CMC (to pigment)=1.0%, and less anti-foams and so on.(3) Glossy coating formulations nano-SiO2/PVA=3/2, CMC/pigment=1.0%, and less anti-foams and so on.3. Minim additive agentsThe coatings which were added with oligo-maltose and salt B could improve the paper's properties. The best dose: maltose/the solid =15%, salt B/ the solid =10%, PD/ the solid =2.4%.4. Coating properties and mechanism(1)In order to divived nano-SiO2 effectivelr, several divide disperse manners should be used.(2)Transference of binders was be discussed.(3)Water-resistance of paper could be quantitative anylyzed by contact angle, the larger of the contact angles, the better of the water-resistance.