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The Future of Offset Printing

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  1. The Future of Offset Printing March 20th 2004

  2. HEVEA World’s First Cyberoller shop: ENGINEERS (P) Ltd www.heveaengineers.com Welcomes You German Perfection, Indian Prices

  3. HEVEA ENGINEERS (P) Ltd German Perfection, Indian Prices • Faster => Delivery • Higher => Resilience • Stronger => Formula for long life

  4. HEVEA ENGINEERS PVT LTD MANUFATURERS OF PRINTING RUBBER ROLLERS IN TECHNICAL CO-OPERATION WITH GUMMIWERK KRAIBURG, GERMANY

  5. The HEART of the PRINTING MACHINE IS The RUBBER ROLLER

  6. WHY PRINTING ROLLERS ARE CRITICAL TO PRINTING QUALITY Printing quality depends on: • the quality of paper • the quality of ink • the quality of rubber rollers

  7. TYPES OF ROLLERS FOR PRINTING • Letter Press • Offset Inking • Offset Damping • Lamination • Flexo • Gravure • Metal Print • Food Grade

  8. Offset Printing Rollers classified into Ink Distributor Rollers Ink Form Rollers Dampening Rollers Conventional Dampening Rollers Alcohol Dampening Rollers OFFSET PRINTING ROLLERS

  9. Sheet fed Offset rubber rollers • Damping • Conventional • Bareback with fount • Bareback alcohol Duct Forme • Inking – Forme - Distributor

  10. IMPORTANT PROPERTIES • Hardness - from 25 to 100 • Resilience- To spring back to its original shape after being subjected to pressure • Evenness- To maintain an even supply of ink • Chemical Resistance- Resistant to ink, fountain solutions, and cleaning agents. • Dimensional stability-Roller needs to remain in proper shape and size even after use

  11. RESILIENCE- critical for inking roller Resilience is elasticity or spring effect Higher resilience means lower pressure setting Lower pressure setting means • Less friction and wear out of plate • Less heat generated and longer life for roller

  12. Damping rollers required properties • Must be inert in aqueous media • Must have high affinity for water • - Low surface tension for rubber compound • Bareback damping forme roller perfectly even • Alcohol damping – high resistance to alcohol

  13. ROLLER CARE • 1. Have Spare set to avoid downtime of your expensive machines. • 2. Store the rollers in a cool place • 3. Keep Rollers in a storage rack or the packing box • 4. Handle Carefully- Avoid contact with sharp edges • 5. Ensure bearings are in good condition • 6. Cleaning the roller

  14. CLEANING THE ROLLER • Ink should not be allowed to dry on the roller • When machine stops clean roller with a two step wash. • Clean roller should have a dull velvet finish of a new roller.

  15. Slash Overall Cost Slash your Overall cost using our rollers Our Proud Customers The Hindu Lokvani Hallmark Thomson Proteck Time of India Shakthi Udyog Next

  16. TROUBLE SHOOTING OFFSET ROLLER PROBLEMS PROBLEMS CAUSE SOLUTION DUE TO ROLLERS OTHER THAN ROLLERS SCUMMING DIRTY OR GREASY DAMPENING ROLLER IMPROPER INK WATER BALANCE WASH THE ROLLERS THOROUGHLY.IF WORN REGRIND OR REPLACE DEFECTIVE ROLLERS PLATE SURFACE SCRATCHED SMALL HARD PARTICLES EMBEDDED IN THE ROLLER FOREIGN MATTER ON BLANKET OR IN INK HORIZONTAL STREAK GLAZED INKING FORME ROLLERS FORME ROLLER SET TOO TIGHTLY AGAINST PLATE RESET IFR TO PROPER PRESSURE AGAINST PLATE SCUM STREAKS ACROSS PLATE GLAZED INKING FORME ROLLERS DAMPENING ROLLERS SET TOO TIGHTLY AGAINST THE PLATE RESET AT PROPER PRESSURE UNEVEN STRIP DURING STRIP TEST ROLLERS UNEVEN ACROSS DIA GRIND OR REPLACE INK FLOW IN FINE DROPLETS OR FILAMENTS ROLLERS IN POOR CONDITION INCORRECTLY SET ROLLERS RESET CORRECTLY OR REPLACE INK FEEDS IN PATCHES GLAZED ROLLERS,LOW SPOTS, BENTSPINDLE TOO MUCH DAMPING SOLUTION OR GUM BLANKET CONTAMINATED PAPER    REMOVE THE GLAZE WITH A STEP WASH UP SOLUTION GHOSTING GLAZED OR HARD ROLLERS POOR INK AFFINITY CHECK, REGRIND OR REPLACE IF HARDNESS IS ABOVE 40 NON UNIFORM PRINTING ROLLERS IN POOR CONDITION IMPROPERLY SET IFR CHECK THE CONDITION AND RESET IFR INK REPELLING SPECKS OR DOTS FOREIGN PARTICLE PRESENT IN THE PITTED ROLLER PRESENCE OF PAPER FIBRE, FOREIGN MATTER ON THE PLATE         RECONDITION ROLLER   CLEAN THE  PLATES

  17. HEVEA ENGINEERS (P) Ltd German Perfection, Indian Prices • Faster => Delivery • Higher => Resilience • Stronger => Formula for long life

  18. HEVEA ENGINEERS (P) Ltd German Perfection, Indian Prices Faster=> Delivery

  19. HEVEA ENGINEERS (P) Ltd German Perfection, Indian Prices Higher=> Resilience

  20. HEVEA ENGINEERS (P) Ltd German Perfection, Indian Prices Stronger=> Formula for long life

  21. Printing Roller is like your wife • It is soft and prone to damage • Nice to feel but will crack easily • Have to maintain it properly…

  22. Treat her well • Your Home is happy • Your roller will give hours • of trouble free and quality printing

  23. HEVEA World’s First Cyberoller shop: ENGINEERS (P) Ltd www.heveaengineers.com Thanks for coming German Perfection, Indian Prices