A doctor blade, intended for a doctor blade chamber (6) for a flexography printing unit (1) equipped with a screened cylinder (4), presents in the form of a rectangular blade, with a functional longitudinal side (34) of which a longitudinal edge is capable of making contact with the screened cylinder (4), a longitudinal fastening side (33) and two lateral sides (36, 37). The doctor blade comprises at least one opening located towards the functional longitudinal side (34) and towards the first of the two lateral sides (36, 37).

A rotary screen printing press is provided with a screen-cylinder throw-on/off motor encoder (231) that detects the position of a screen cylinder (201), a squeegee throw-on/off motor encoder (232) that detects the position of a squeegee (221), and a control unit (300) that controls screen cylinder throw-on/off motors (209) and squeegee throw-on/off motors (224) based on the position of the screen cylinder (201) detected by the screen-cylinder throw-on/off motor encoder (231) and the position of the squeegee (221) detected by the squeegee throw-on/off motor encoder (232) so that the squeegee (221) may not contact a screen plate (201A) except when the screen plate (201A) is in contact with an impression cylinder (100).

A doctor blade (5, 7) for contact with an anilox roller (15) comprises a flat, elongate base element having a thickness of less than about 0.3 mm, which, along a longitudinal region of the doctor blade adapted for contact with said anilox roller, is provided with a coating (43). The coating comprises a metal matrix and at least about 65% by weight of one or more ceramic(s). The coating comprises 0 to 65% by weight of chromium carbide. An inking arrangement comprises an anilox roller and a doctor blade. A doctor blade is used in flexographic printing.

A doctor blade, intended for a doctor blade chamber (6) for a flexography printing unit (1) equipped with a screened cylinder (4), presents in the form of a rectangular blade, with a functional longitudinal side (34) of which a longitudinal edge is capable of making contact with the screened cylinder (4), a longitudinal fastening side (33) and two lateral sides (36, 37).

The doctor blade comprises at least one opening located towards the functional longitudinal side (34) and towards the first of the two lateral sides (36, 37).

A doctor blade (5, 7) for contact with an anilox roller (15) comprises a flat, elongate base element having a thickness of less than about 0.3 mm, which, along a longitudinal region of the doctor blade adapted for contact with said anilox roller, is provided with a coating (43). The coating comprises a metal matrix and at least about 65% by weight of one or more ceramic(s). The coating comprises 0 to 65% by weight of chromium carbide. An inking arrangement comprises an anilox roller and a doctor blade. A doctor blade is used in flexographic printing.

Doctor blades (5, 7) for contact with an anilox roller (15) comprise a flat, elongate base element, which, along a longitudinal region of the doctor blade adapted for contact with said anilox roller, is provided with a coating (43). The coating comprises a metal matrix and at least about 65% by weight of a ceramic or at least about 65% by weight of chromium carbide. An inking arrangement comprises an anilox roller and a doctor blade. A doctor blade is used in flexographic printing.

A rotary screen printing press is provided with a screen-cylinder throw-on/off motor encoder (231) that detects the position of a screen cylinder (201), a squeegee throw-on/off motor encoder (232) that detects the position of a squeegee (221), and a control unit (300) that controls screen cylinder throw-on/off motors (209) and squeegee throw-on/off motors (224) based on the position of the screen cylinder (201) detected by the screen-cylinder throw-on/off motor encoder (231) and the position of the squeegee (221) detected by the squeegee throw-on/off motor encoder (232) so that the squeegee (221) may not contact a screen plate (201A) except when the screen plate (201A) is in contact with an impression cylinder (100).