Riso launches Valezus production inkjet printer

Riso has signaled its intention to break into the high speed production inkjet press market with the announcement of the Valezus T2100, the first of a new T2-series of colour cut-sheet printers. 

Riso has developed this twin-engined Valezus T2100, which uses oil-based inkjet printing.

However, the print engine itself is based on the existing GD9630. But whereas the GD series are standalone devices primarily designed for office use, the T2-series are twin-engined machines so that they’re capable of producing 160 A4 ppm in duplex as well as single-sided (or 320 impressions per minute). 

These printers use Riso’s ForceJet system, which is unusual in that it is a drop on demand inkjet system with oil-based pigment ink. The oil-based ink contains pigment, oil, dispersant and additional agents, all combined in such a way as to optimise the ink absorption into the substrate, whilst also allowing for duplex printing. On printing, some of the ink evaporates into the atmosphere, with the rest absorbed into the media. The oil itself comes from soybeans. 

The inks dry instantly as they are absorbed into the paper so that there’s no need for dryers or any kind of fixation. This of course also helps to reduce the running cost in terms of power consumption. Crucially because there’s no water content, there’s little risk of curling or other damage to the paper. In addition, Riso says that this ink is resistant to both fading and water.

I believe that Riso is using drop on demand piezo printheads from Toshiba Tec, though Riso has not confirmed this. Riso does say that there’s little risk of the inks drying in the nozzles so that there’s less need for cleaning than with aqueous inks, other than the occasional wipe across the nozzles to remove paper dust.

It’s a full colour machine, with cyan, magenta, yellow, black and grey. However, while it prints the black at 600 x 600dpi, the other colours are laid down at 300 x 300 dpi resolution in the Standard mode, and at 300 x 600dpi in Fine mode. It uses single pass greyscale printing, with four greyscale levels on the black and 12 on the colours. 

The printer takes paper up to 340 x 460mm and can handle media from 46 to 210gsm. It appears to take both plain and recycled paper, with no mention anywhere on Riso’s information of having to use any kind of coated media.

Its configured with two high capacity feeder and stacker units, each capable of handling up to 4000 sheets. The two units can be switched during printing so that the machine can be loaded with up to 8000 sheets, with the redundant unit then being refilled so that there’s no need to stop the printer. Also, the stacker unit is equipped with a jogger mechanism and dedicated cart, enabling smooth transition to post-processing after printing.

It supports PDF, PostScript and AFP/ IPDS workflows. It’s aimed at the transactional printing (invoices and statements) and direct mail markets and should be capable of producing 500k – 2,000k pages per month. The T2100 costs roughly £150,000 in the UK and should start shipping in the UK by Spring 2020. It has initially been announced in Europe and North America although Riso says that this is mainly for the marketing team to gain feedback and that it will also be offered in Japan and Asia. 

UK readers will have a chance to see this printer later this month at the Print Show at the NEC near Birmingham, 17-19 September, while in the US it will be shown at Printing United in Dallas, Texas, 23-25 October. You can find further information from riso.co.jp

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