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The principle of offset printing is the graphic part lipophilicity and the blank part oleophobic hydrophilic. Based on the ink-water balance theory, this paper mainly discusses the base paper and the coating formulations of paper-based printing plate. In this paper the properties of the paper-based printing plate of the different coating formulations were detected and evaluated, meanwhile these plates were tested in the offset printing. Based on the detection of print quality, plate coating performance and the number of copies printed, the base paper and coating formulations of this plate was be determined. The results of this study for this plate have some significance in the actual production.

Quaternary europium complex EuxGd(1-x)(POA)(TTA)2Phen were synthesized by doping no-fluorescent inert ions Gd3+with ligands of POA, α-thenoyltrifluoroacetone (TTA), and o-phenanthroline(Phen).IR spectra was studied , indicate that these complexes have similar structures, have bonded with the ligands.The fluorescent properties,the influence of fluorescent property by doping ions Gd3+were studied. The results showed that the doping ions Gd3+can enhance the fluorescence intensities, the best mole ratio of europium to gadolinium is 6：4.

The synthesis of reversible red-thermochromic materials when temperature range at re-spectively 36.0～39.5°C, 44.5～46.5°C, 51.0～53.5°C with the tetradecanol, hexadecanol and octa-decanol as corresponding solvents, letlacton compound of 3-diethylamino-7,8-phenyl-fluoran as procrypsis dye as color agent were studied in this paper. The chromic properties of reversible red-thermochromic materials by infrared spectrum technology were analyzed.Experiment shows, In the reversible thermochromic materials, the solvent to determine its color temperature, color agent is mainly to determine its color depth, procrypsis dye itself to determine its color and stability proper-ties. The optimal matchs of procrypsis dye, color agent and solvent are 1:4:30(tetradecanol), 1:3:40(hexadecanol), 1:2:20(octadecanol) respectively. This paper has theoretical and practical di-rection function in counterfeiting printing and packaging field of reversible thermochromic material.

Fluorescence falsification-resistant ink is one of the most widely used ink in packaging and printing industry. In this paper, europium complexes were synthesized by doping no-fluorescence inert ions Gd3+. IR spectra indicated that these complexes have similar structures, have bonded with the legends. The fluorescence properties indicated that the doping ions Gd3+ can enhance the fluorescence intensities, the best mole ratio of Gd3+ to Eu3+ is 1:9；At last, fluorescence falsification-resistant ink was prepared, the fluorescence ink showed the characteristic emission of Eu3+ , showed invisible in visible light and showed red fluorescence under ultraviolet light.

Flexographic printing plate based on its soft characteristic has been widely used in the field of printing of corrugated box and plastic film. The system researches on the factors influencing the flexographic platemaking quality were carried out, including the different exposure time and the different development time affected the bulge image depth and plate thickness of the printing plate. The results provided a reliable reference data to obtain excellent printed matter, which determined the ideal platemaking parameters of the same type plate without doing any experiment.