Missed Registered

Hi ...I have a GTO 52 4 colors ...I'm facing a problem that the cyan register from the bottom of the impression is correct unless the top that is longer than the other colours by 1/2 mm ...so please help me to solve that problem. ..thank you

 

make sure your blankets all all the same thickness and the packings the same also

 

Hi sir ... I have the same thickness and the same mark of the blankets ...I'm looking for another reason. ..please help me. .thank you for your kindness. ..

 

have you tried a known paper of high quality? If so have you actually measured the blanket and packing or are you just going with whats stamped on the blanket? Im a firm believer in measuring rolling height with a packing guage. A packing gauge if your not familiar will allow you to check your plate and blanket heights without removing from cylinders. It will give you on the spot info that will prove invaluable. If after actual confirmation of rolling height proves correct then I would say you need to look at grippers and transfers. One half of a millimeter on a small press such as a GTO is alot!

 

Thank you sir for your reply. .. l have just tried the gripper and it is very good handling the paper. .both the transfer cylinder and the impression cylinder. ..so l have to measure with packing guage ...

 

Check runout of all 3 cylinders on the cyan unit with magnetic base and dial indicator. Runout should be no more that .02mm

 

Hi sir Exheidmech ...I really appreciate your solve for my problem. ..but I want to know how to get magnetic base tool and why exactly to use it , and how ,and will it measure the diameter of each cylinder of the cyan ..
I'm looking forward to hear back from your kindness. ..thank you. .

 

I have to ask you if you please to supply me with a video link to show me how to use and do magnetic base measures. ..thanks for your kindness. .

 

There are plenty of videos on proper use of a dial indicator with a magnetic base. What you are looking for is the runout on the cylinder surface and bearers. As said before you should see no more than .02mm (less than .001 of an inch) of runout, ideally you want zero runout. I will usually measure each bearer and also 3 points on the cylinder surface. Inch the machine from lead to tail while watching the dial indicator.

 

Thank you Mr. Exheidmech ...I'll try that solution. ..and I will inform you about that soon. ..

 

Hi ... I have measured the cylinders and it was so good ... but l want to know what are the 3 points on the cylinder surface you asked me to check. ..thank you for your kindness. ..

 

Hi ... I have measured the cylinders and it was so good ... but l want to know what are the 3 points on the cylinder surface you asked me to check. ..thank you for your kindness. ..

 

you are going to measure on 5 points on the cylinder total. 1 on each bearer, this will tell you if the journals are bent. 3 on the cylinder surface, 1 in the center which will tell you if the cylinder itself is caved in and then one on each side closest to the bearer and these will tell you if the cylinder body itself has been pushed out of center.