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We are printing a blue spot color ( about 80% coverage ) on first unit and a yellow spot color ( about 5% coverage ) on the second unit. As they are printing, the yellow print is coming out greenish. When they are printed seperately, the yellow and blue print out alright. Our press operator...

What are the best ways to minimize curling of laminated boards? Here is our process : We are currently using two layers of chipboard with a cross grain direction [ middle layer ]. After this we glue a sheet of paperboard ( clay coated newback ) to one of the sides [backing]. We allow it to...

Is there a specific orientation for the plate clamp bars on an old Heidelberg SORDZ ( circa 1970's )? Our operator took out the plate clamp bar and "reversed it" so that what was orignally at the tail end of the plate now grips the front end of the plate. Thanks.

Just wonder what type of torque wrench should we get for our blankets? Thanks.

Our presses are using a conventional dampening system with a nylon based molleton dampening cover. According to our operator, the dampening cover we are using is "too slippery" when wet making it difficult for him to control the water during the press run. Does anyone have this sample problem...

After cleaning the rollers we've notice that there is a hard smooth white deposit on the rollers. The only way was can remove them is if we use a deglazer. I've included pictures of what the rollers look like. Does anyone know what the cause is and how to prevent it? Thanks.

When we get a new set rollers it comes to us without the spacers and bearings attached. What's the best way to press the bearings onto the rollers? Thanks.

Does anyone know where I can find instructions on how to make a proper colour viewing station from scratch? I remember seeing the specifications in a book awhile back but I can't seem to find it or any references on the Internet. We are planning on either making one ourselves or purchasing a...

We were having problems using the VARN COATED MEDIUM and VARN REGULAR MEDIUM ( 20 to 40 microns ) spray powder for our machines. Whenever we are use these powders they would clog up our spray powder heads. After switching to VARN Fine ( 10 to 20 microns ) the problem went away but we've...

We are currently running a job with a large red background ( spot color ). Our problem is whenever we get the colour close to our approved colour we find that the next day the colour lightens or appears matte. We've used inks that are mixed in the plant and inks mixed at our ink supplier and we...