GRA 424 Lecture Notes - Lecture 11: High Force, Light Table, Fan-Out
5 Jul 2016
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Document Summary
Printing dots, line work, or solid imagery does not precisely align and/or consistently reproduce from sheet to sheet causing an inconsistent blurred image or color variance. Sometimes called doubling, unit-to-unit misregister or slur occurs when the inked image does not consistently transfer sheet-to-sheet in the exact register of the original print. This print inconsistency then transfers back from the printed sheet to the non-image area of the blanket in the following unit of print. This false image, in conjunction with the actual registered image, then transfers from the blanket to the next sheet in succession as a slur or double image. Press considerations: use tack-graded inks with decreasing tack in order of sequence. Excessive blanket over-packing may result in too much impression squeeze. Consult with supplier for recommended packing and torque specifications: change to a matching set of high quality quick-release blankets. A rougher- surfaced blanket can improve release characteristics and may be more appropriate for smoother-surfaced substrates.
