doctor blade

The quality of the doctor blade has a direct influence on the finished printing.

This is achieved by using a metal scraper, called a doctor blade.

The doctor blade holder is also vitally important.

The inking unit can be either of fountain roll system or doctor blade system.

Crêping is done by the Yankee's doctor blade that is scraping the dry paper of the cylinder surface.

A doctor blade is used to scrape excess ink from the surface leaving just the measured amount of ink in the cells.

The doctor blade removes excess ink from the anilox roller before inking the printing plate.

The Yankee cylinder can be equipped with a doctor blade and sprayed with adhesives to make the paper stick.

Blade holders must position the doctor blade firmly against the roll and accommodate roll surface irregularities.

As the disk rotated, a doctor blade discharged and smoothed the ripples in the oil, readying it for re-use on another television frame.

In rotogravure printing the doctor blade is the device that removes the excess ink from the smooth non engraved portions of the image carrier.

This involves pouring the slip (which contains a polymer "binder" to give it strength) onto a moving carrier belt, and then passing it under a stationary "doctor blade" to adjust the thickness.

Other terms used were air bar, air squeegee, air curtain, air jet, air blast, air blow off, air nozzle, air comb, air blade and air doctor blade.

The crinkle (crêping) is controlled by the strength of the adhesive, geometry of the doctor blade, speed difference between the yankee and final section of the paper machine and paper pulp characteristics.

A flood bar pushed a pool of ink over the plate, and a doctor blade removes the ink from the plate surface, leaving ink on the etched artwork area ready for the pad to pick up.

The cells are filled with ink and the excess is scraped off the surface with a doctor blade, then a rubber-covered roller presses paper onto the surface of the plate and into contact with the ink in the cells.