The wavelength of thermal laser diode is 

The flexographic plate are attached to the plate cylinder with double sided adhesive tape called ---------------, which may be solid vinyl or cushion type.

The most common offset plate metals used is

Scumming occurs on press when ------------ areas accept ink.

Sleeve is a plate used in ------------- printing process.

Before etching the surface of the gravure/cylinder which is not to be etched is covered with