HEIDELBERG GTO 52 / 52 Z / 52 V ADJUSTMENT OF PRESSURE BETWEEN BLANKET AND IMPRESSION CYLINDER

Adjustment of pressure between blanket and impression cylinder

is done by one each knurled knob (ill. 6/19). Settings are shown on graduated scales (ill. 37/3)

 Method of adjustment:

Deduct 0.1 mm (.004”) from the thickness of the stock to be printed and set both scales to this value (ill. 28/3). (0.1 mm = .004” is the pressure required.) (Observe: Measure paper thickness by means of micrometer or other suitable thickness gauge, the grammage of the paper does not indicated a true thickness.)

 

Example I   Carton 0.4 mm (.016”) thick, offset plate 0.10 mm (.004”) thick, blanket with underlay level with bearer Cardboard                             0.40 mm (.016”) -pressure                               0.10 mm (.004”)                                             + 0.30 mm (.012”)   The pressure indicators have to be  adjusted to face the black number –  0.3 Thus, the blanket cylinder is -0.3  mm (.012”) of its zero-position. (From impression cylinder.)

Paper 0.05 mm (.002”) thick, offset plate 0.10 mm (.004”) thick, blanket and underlay level with bearer Paper                                  0.05 mm (.002”) -pressure                            0.10 mm (.004”)                                              - 0.05 mm (.002”) Pressure indicators face the red  number + 0.05. Blanket cylinder  is + 0.05 mm (.002”) off its zero-position.  (Towards impression cylinder.)

Example II   Carton 0.4 mm (.016”) thick, offset plate 0.15 mm (.006”) thick, blanket and underlays 0.05 mm  (.002”) below bearer Cardboard                         0.40 mm (.016”) -pressure                           0.10 mm (.004”) -blanket below bearer    0.05 mm (.002”)                                           + 0.25 mm (.010”) Pressure indicators facing the black number – 0.25.  Blanket cylinder is 0.25 mm (.010”) of its zero-position. (From impression cylinder.)

Paper 0.05 mm (.002”) thick, offset plate 0.15 mm (.006”) thick, blanket and underlay 0.05 mm (.002”) below bearer Paper                                    0.05 mm (.002”) -pressure                             0.10 mm (.004”) -blanket below paper        0.05 mm (.002”)     -0.10 mm (.004”) Pressure indicators face the red number  + 0.10. Blanket cylinder is + 0.10 mm  (.004”) off its zero-position. (Towards impression cylinder.)

 

BY : BERKAH MANDIRI MESINDO