by clicking the arrows at the side of the page, or by using the toolbar.
by clicking anywhere on the page.
by dragging the page around when zoomed in.
by clicking anywhere on the page when zoomed in.
web sites or send emails by clicking on hyperlinks.
Email this page to a friend
Search this issue
Index - jump to page or section
Archive - view past issues
FLEXO Magazine : June 2008
What is I!: TEST? "-\.r \".... e ' TEST is a joint effort between the FFTA and complying educational institutions to expand technical skills required by a continually advancing flexographic process, bringing state- of-the-art professional development solutions to the flexographic industry. . TEST Technical Tidbit: Each month TEST will feature a technical tidbit from one of our partners. If you have a question you would like to be put to TEST send it to: test@ flexography.org Our question goes to our friends at Rochester Institute of Technology. Our company has traditionally printed offset, but we're now getting into flexography. What, if anything, should we do differently to measure and control color? Inking and controlling color in flexography differs from offset. In offset, individual ink keys across the width of the press are individually adjusted to control ink film thickness. On a flexo press, ink is delivered via a uniformly engraved anilox roll that delivers a pre- cise amount of ink based on its engraving configuration. Further, pressure between the anilox-to-plate and plate-to-impression cylinder greatly impacts both ink transfer and tone reproduction (dot gain). Flexo presses have adjust- ments for pressure on the gear and operator sides. Therefore, control patches need to be placed on both sides of the form. And, it's crucial that halftone patches are included along with solid patches as they respond much more quickly to pressure changes than solids. Remember, if you don't measure it, you can't control it. About our TEST Partner: RoIoT Il Printing Applications Laboratory Solutions for the Printing and Imaging Industries Rochester Institute of Technology plays a unique role in the printing and publishing industries by educating future employees, training current employees and collaborating with industry in applied research activities. Leveraging RIT's comprehensive collection of full-scale contemporary printing equipment, from conventional processes to state-of-the-art digital printing technology, and the expertise of RIT's world renowned faculty and technical staff, the Printing Applications Laboratory provides indus- try with practical, measurable information to control and improve the quality of their products and expand the knowledge of printing industry professionals. II. .. TEST .... Founding Sponsors Ron&Katherine Harper HARPE