Printing device and printing process for water-based ink decorative paper

The invention provides a printing device and process for water-based ink decorative paper.The printing device comprises a printing roller, a printing assembly and a drying assembly, the drying assembly is used for drying backing paper printed with ink, and the printing assembly comprises a first printing part and a second printing part which are located on one side of the printing roller and further comprises an oil scraping part and an oil supplementing scraper part; the oil scraping piece is located on one side of the printing cylinder, initial ink on the printing cylinder sequentially passes through the oil scraping piece and the first printing piece, the oil scraping piece is used for scraping part of the ink on the printing cylinder, and the oil supplementing scraper piece is located between the first printing piece and the second printing piece and used for smearing part of the ink on the printing cylinder. Conveying pieces used for conveying backing paper into and out of the drying assembly are arrange