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Visitors to Igas in Tokyo last September witnessed for the first time Ryobi’s newly developed inline UV casting system on its Ryobi 750 series B2-size multi-colour offset presses: this innovative system is now to be demonstrated daily at drupa
Since the premiere of its inline UV casting system at Igas, Ryobi has further enhanced the possibilities for high valued-added printing including embellishment on the Ryobi 750 series B2-size multi-colour offset press with the addition of in-line foiling, in addition to the casting in a single unit.
In order to show its increased functionality, there will be special daily demonstrations of the inline UV casting and foiling system during drupa. Holograms and foiling are used in diverse printing applications, among them publishing, advertising, security and package printing.
The system is Ryobi’s response to market demand for higher value adding press capability that enables printing companies to differentiate their products from those of their competitors. The inline UV casting and foiling system incorporated into Ryobi 750 series presses enables inline casting that adds holographic effects and foiling to printed matter.
By bringing high value-added holographic coating or foiling inline in this way, productivity is raised and advanced holographic coating is achieved with stable registration accuracy.
Ryobi engineers have carefully set out to answer the needs of users involved in high value-added printing, developing a variety of systems that can efficiently deliver high quality film, lenticular, chemical embossing (as shown on the front cover of the December 2006 edition of Australian Printer magazine and Cyber’s 2007 Christmas card distributed with AP) and other printing techniques.
The diversity inherent in the high value-added printing offered by the 750 series has been further expanded by
the development of Ryobi’s new inline UV casting system.
“We are convinced that the UV casting system will contribute greatly to the advancement of high value-added printing that will take the sheetfed market to an even higher level,” says Bernard Cheong, managing director of Cyber (Australia), local agents for Ryobi.
Casting & foiling process
After printing and coating with UV varnish, the relief texture and holographic pattern of the film are transferred to the UV varnish, then the printed surface is cured by UV light to produce the holographic effect.
After printing and applying the UV cure glue with the printing or coating unit, the film-based foil is covered on the printed surface. Then the UV lamp is used to irradiate and fix the foil firmly. When the glue is applied in the coating unit, foiling with superior adhesive strength is ensured.
Both casting and foiling can be accomplished inline during printing using a single unit and inline installation on the Ryobi 750 series enables space saving for the overall system.
Various patterns of film for casting, including custom-designed patterns, are available and because the film can be rewound and used several times, the system is cost efficient.
The coating unit is used to apply glue for foiling and and thus adds superior adhesive strength to the foil.
A UV lamp can be used in combination with the UV casting device and the delivery section with replacement easily accomplished in around three minutes.
When casting or foiling is not being employed, the lamp unit remains raised and doesn’t affect paper transfer during normal printing.
Stable registration accuracy in casting and foiling is made possible by the use of a gripper for secure paper transfer.
The drupa exhibit
THE B2-size Ryobi 755 press to be exhibited at drupa 2008 will accommodate film for holographic coating of a thickness of 0.025 mm in rolls 788mm wide by 5000m in length.
Foil of a thickness of 0.015mm including the base film in rolls 788mm wide by 5000m in length can be accommodated. According to Ryobi, mounting of foil rolls with a 435mm diameter is possible.
Processing speeds of 3000 to 15,000 sheets per hour synchronised with the press are possible, though processing speed varies depending on print quality required, says Ryobi.
Ryobi is exhibiting on Hall 17, stand 17 A 06 at drupa where it will suggest suitable systems and solutions to meet market needs through Ryobi Smart Net, a digital workflow system, by integrating printing press, peripherals, software and other systems. Also new from Ryobi will be its entry into the B1-size market space – the high-speed five-colour Ryobi 1050-5.
A full complement of staff from Cyber (Australia) and elsewhere in the region will be on hand at drupa together with Ryobi engineers and experts to explain the company’s innovative technologies to stand visitors.
