I'm from Thailand and my English is not quite good. When heidelberg sm102 year 1997 offset printer met color difference between front and tail edge he adjust oscillator roller to white or red umber. Could somebody explain how it Worked?
Read the following information on Lateral ink distribution. Read the final pages of the PDF. The same theory applies to the SM102 press. By changing from White to Red the ink charge will start View attachment SM74E (4).PDF from the gear side moving to the operator side or vice-versa. Check previous posts on this subject.
I couldn’t get Heidelberg Instructor’s link to open but here’s another link to just one of many threads in this forum discussing the matter. It’s important to try and keep in mind that there are many variables involving color control in the offset printing process, and ink oscillation charge is only one of them.
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