Studies of Ink Transfer During Printing.

During the past year, LTF undertook some fundamental studies of ink transfer during the printing impression to fill the growing demand for more information about the relationship between ink and paper. An LTF Pick Tester was modified for the installation of strain gages. The forces involved during the printing impression can be measured with these gages. Through these measurements a better insight into ink and paper behavior on the offset press will be gained. In particular, the information obtained includes such things as: the forces involved during ink film splitting, and the properties of inks and papers that will affect the forces involved during ink film splitting.