The Future of Offset Printing March 20 th 2004

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

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

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

The HEART of the PRINTING MACHINE IS The RUBBER ROLLER

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

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

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

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

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

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

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

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

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.

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

TROUBLE SHOOTING OFFSET ROLLER PROBLEMS PROBLEMS CAUSE SOLUTION DUE TO ROLLERSOTHER THAN ROLLERS SCUMMING DIRTY OR GREASY DAMPENING ROLLERIMPROPER INK WATER BALANCEWASH 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 CONDITIONINCORRECTLY SET ROLLERS RESET CORRECTLY OR REPLACE INK FEEDS IN PATCHES GLAZED ROLLERS, LOW SPOTS, BENT SPINDLE TOO MUCH DAMPING SOLUTION OR GUM BLANKET CONTAMINATED PAPER REMOVE THE GLAZE WITH A STEP WASH UP SOLUTION GHOSTING GLAZED OR HARD ROLLERSPOOR INK AFFINITYCHECK, REGRIND OR REPLACE IF HARDNESS IS ABOVE 40 NON UNIFORM PRINTING ROLLERS IN POOR CONDITIONIMPROPERLY 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

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

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

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

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

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

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

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