DOCTOR BLADE

摘要

This invention provides a doctor blade for use in combination with a gravure printing roll, which, even when applied to gravure printing using a water-based ink for printing at the same speed as gravure printing using an oil-based ink, is less likely to cause fogging of a plate, can bring gravure printing using a water-based ink to a practical level, and can prolong the service life. The doctor blade comprises a doctor blade body in which the front end part is a knife edge part. In such a state that the knife edge part abuts against the gravure printing roll, the printing roll is moved relatively to the doctor blade to fill gravure cells with an ink and to scrape off excess ink. The doctor blade is characterized in that the doctor blade body at least in its knife edge part is covered with a silicon dioxide film, and the silicon dioxide film is formed using a perhydropolysilazane solution.