Roller details

[edwardraj a]

Hi Folks

can i get answer for following questions.

WE HAVE HBG CD & SM

What is the life of roller.INK / DAMP

WHAT IS THE CORRECT SHORE HARDNESS OF ROLLER .INK / DAMP

WHAT IS THE BEST WAY TO MAINTAIN ROLLER FOR LONG LIFE.

Your valuable replys are very much appreciated.

[mazengh]

It would be helpful if you can indicate if you're printing with or without ipa. From what I've seen, If the roller are well adjusted and you use a weekly special maintenance chemical like bottcher feboclean or abc allied CRUD roller paste along with a high quality wash, then you can get up to 3 years from the dampening rollers and 5 years from the ink rollers.

[Dan Roll]

One of the main reasons dampening rollers do not last as long as ink rollers is that on many presses the dampening rollers are subject to vastly more surface friction than the ink rollers are. In the Heidelberg Alcolor system for instance, the pan roller and chrome rollers do not turn at the same surface speed and the speed difference between the chrome roller and form roller is high. If the rollers are set too tightly in these positions, friction will wear the rollers quickly. The various elastomers used to make rollers can be chosen to optimize one property or another; poor dampener roller life is usually due to an elastomer with poor abrasion resistance used to make the roller in order to maximize some other property (chemical resistance, some surface property, etc).

[Alois Senefelder]

Hello fellow Lithographers,

While our esteemed colleague Mr. Dan T. Roll, mentions some valid points, remember water is

great lubricant.



"In the world there is nothing more submissive and weak than water. Yet for attacking that

which is hard and strong nothing can surpass it." ---- Lao Tzu



Regards, Alois

[edwardraj a]

HI mazengh so far we use to print with IPA but recently only we print without IPA

It would be helpful if you can indicate if you're printing with or without ipa. From what I've seen, If the roller are well adjusted and you use a weekly special maintenance chemical like bottcher feboclean or abc allied CRUD roller paste along with a high quality wash, then you can get up to 3 years from the dampening rollers and 5 years from the ink rollers.