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Riso Com Color GD 9630

Brian Sims takes a closer look at the Riso Com Color GD 9630 high-speed inkjet production printer and discovers that despite a relatively small footprint, the solution packs real punch

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The Riso GD 9630 is one of the most productive machines of its type on the market, offering a four-plus-one colour speed of 160ppm

Delivering high quality products

In our industry, we can quite often be taken aback by the size of some of the largest presses that some of the market leaders produce and be overawed by the technology, based solely on quantum. However, size is not necessarily a measurement of the impressiveness of a product, and here, we look at what, on first appearance, looks like a traditional office printer, but is in fact far from that.

Riso claims its Com Color GD 9630 high-speed inkjet production printer is the quickest on the market with an impressive four-plus-one colour speed of 160ppm. That is a lot of paper passing through a printer with a small footprint and, with a full-colour set being applied at the same time, the machine needs to be well constructed. So, is it?

Clearly when you look into the mechanics of the press, its superstructure, components, and design, you start to understand why this little press could produce the volume of production claimed.

From a design perspective, the GD 9630 uses the simple concept of having a flatbed and transfer belt for the paper, which enables the patented Forcejet ink heads to deposit ink droplets from a set of piezo electric heads at 600dpi.

Post-ink deposition, there are a set of paper transfer rollers, each being diamond coated with precision ball bearings at each end that carries the papers towards the output tray. Following the paper passing through the upper transfer roller section, similarly designed rollers direct the paper into a duplex switch over mechanism or onward to finishing sections. All of the components in this part of the machine clearly have a fingerprint of design quality ensuring this little press will not only run fast, but fast for a long time.

Hitting high quality

So, we can see the paper will be processed through this machine at speed, but the speed of paper is of little consequence if the application of ink falls below the high quality expected by a modern market. Riso uses its patented Forcejet technology to apply an oil-based ink to the substrate. The Forcejet inkjet heads apply the four process colours and grey to the sheet at the previously stated 600dpi. The head combination gives two rows of black, one each of cyan, magenta, yellow, and grey.

Riso has a sound reason for using a grey in the four colour process; the addition of grey is combined with the black ink which is claimed to reduce the amount of reflected light. The grey also optimises the graduation between colours and suppresses roughness to enhance colour depth. This bundled together means Riso can substantiate their claim of 160ppm speed, but with excellent colour consistency.

Adding to the grey colour to enhance the colour gamut, Riso has also developed a new magenta ink so that overall colour spectrum is greatly improved. Reds, magentas, and violets are all far richer with this new ink.

The ink is one of the keys of this ultra-quick printer; being oiled-based, they are quick drying and this prevents show through and colour migration to the reverse side of the paper. A second benefit of this type of ink is it reduces cockling virtually completely, meaning the sheet stays flat during its transition from plain to coloured, and the paper handling equipment does not have to handle wavy, distorted paper. The ink is contained in large 1,000ml cartridges meaning the speedy, heavy application of colour can be maintained for longer print runs.

So, you can clearly see at the heart of this inkjet printer are all the components for high speed production at high quality. But this alone is not going to make a press a market winner, the paper needs to be fed into the machine and hopefully removed from it in as many different formats as possible. Riso again delivers here with the GD 9630.
At the front end of the press, there is a high-capacity stacker that has the capacity of up to 4,000 sheets.

At the front end of the Riso GD 9630, users will benefit from a high-capacity stacker that boasts a capacity of up to 4,000 sheets

Obviously this value is determined by the thickness of the stock, but the scope of the stacker is large. Continuous feeding can be attained on the machine with multiple trays meaning the GD 9630 can be operated uninterrupted.

It is at the other end of the press where this press shows a significant amount of flexibility. There is a multi-function finisher that will allow the printed material to be folded, bound, and finished in a number of formats. You can punch and staple in a number of positions to suit your needs, finished as a booklet either half folded or folded and stapled, and you can configure the unit to offset each section so that they can be easily separated for further work.

Extra options

You can even ask Riso for a perfect binder to be added to the press; this clever little unit can produce a perfect bound product from 15 to 30mm thick. To ensure the product looks as you intend with regard to cover and spine design, the GD9630 has software compatible with all Microsoft and Adobe formats.

While these types of machines have a specific market in mind, any product needs to have adaptability to the increasing number of formats of proof or origination and product marshalling. Riso has covered off this point by using its product, the FS2000C.

The FS2000C is an EFI Fiery server handling Com Color Express that is a Command Workstation for all Fiery driven printers, like the GD 9630. This software manages all aspects of production from job management, colour management, calibration, spot colour, and any variable data input required. This all being available via a very intuitive GUI means the operation of the press is extremely easy to master.

The press is well made so if you make an investment in the GD 9630, you can do so in confidence

When looking at this press package as a whole, you can well understand why Riso makes the claims it does about this very busy and flexible inkjet printer. The press is well made so if you make an investment in the GD 9630, you can do so in confidence. This press will undoubtedly deliver high quality products in short order for a long time.

This press will undoubtedly deliver high quality products in short order

Brian Sims, principal consultant, Metis Print Consultancy, www.metis-uk.eu
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