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EZ231 Digital Duplicator -
A smart choice for management-friendly value plus user-friendly operation.

What would optimize your print job operations?
Lower costs? Faster speed? Higher image quality?

RISO EZ series digital duplicators offer lower running costs and higher printing speed to achieve greater expense reduction and productivity than photocopiers and printers can provide.

They can process large-batch printing to maximize efficiency in many ways, delivering everything from fixed-form documents to envelopes, cards, leaflets, educational materials and more.

The EZ231's B4-size print capability, versatile performance and affordable price make it the smart solution for handling a wide range of printing work.

Cost efficiencyEase of useProductivityHigh image qualityDurability and Sustainability

Cost efficiency

The higher the volume, the lower the running cost per print.
Great for envelopes and cards, too.

Overall operating costs for photocopiers and printers can be surprisingly higher than you imagine. But RISO EZ series digital duplicators reduce the cost per print of higher volume jobs. How? By scanning the paper original or sending data from a PC for master-making, realizing greater cost efficiency than photocopiers, other printers or outside print shop services can provide.

Cost efficiency

More savings!

Allows special-paper printing in-house

The EZ231 can handle special papers including thick paper, thin paper, envelopes and cards, so you can print more in-house and reduce outsourcing. Use less costly paper to cut costs even further.

Ink Saving Mode

The Ink Saving Mode minimizes ink usage - making large-volume printing especially cost- effective.

Saves paper, too

To reduce paper costs, the machine can print multiple originals onto one sheet of paper.

Ease of use

With its photocopier-like output functionality, anyone can use the
EZ231 with its simple two-step operation.

No worries - anyone can operate the machine as if it was an ordinary copy machine. Output setting is simple.

1. Set the original and press the start key to make a master. 2. Input the number of prints desired and
press the start key again to start printing.
More ease of operation!

Convenient master disposal

The Master Disposal Box is compact and upright, so disposing of used masters stored in it is as simple as pushing a lever. And you won’t stain your hands.

Easy replacement of consumables

An LED blinks to indicate that ink or masters are running low. Replacing ink bottles is as easy as a single click after opening the front door. Masters are easy to change, too.

Color Universal Design

With operational color design authorized by Color Universal Design Organization, operation parts are arranged for easy identification and with consideration for people with color vision deficiency.


Extra-fast printing up to 130 pages per minute, plus easy sorting by group.

Suddenly need a large volume of prints? Don't panic. The EZ571 can print at a maximum of 130 pages per minute. That's over 1,000 pages in only eight minutes - much faster than photocopiers or printers can perform.

More productive!

Program output for easy group sorting

Besides speedy printing, the EZ231 is capable of quickly sorting output documents by group. Use Program A to output different quantities of prints per group, or Program B to output different quantities per page of multiple-page originals. Programs can be saved for later retrieval, so there's no need to repeat input routines each time. Also, an optional Job Separator raises sorting efficiency by inserting tape to mark the end of a job.

More productive!

"Domino theory" paper output mechanism neatly stacks papers at high speed

Thanks to the paper output mechanism, papers are output at high speed and neatly stacked on the V-shaped paper receiving tray. The receiving tray paper guides are designed so that they can be tilted outward for easy paper removal.

High image quality

High-quality output from any kind of original.

The EZ231 does a beautiful job of printing high-quality text and images for a range of work - fixed-form documents, envelopes, leaflets, teaching materials and more.

More beautiful!

Optimum output, faithful to the original

For optimal output, the EZ231 features four preset image processing modes: Line, Photo, Duo (line/photo/shadow off) and Pencil (darker/lighter).

Clearly reproduces penciled text and stamp marks

Press the pencil key for clearer output of text and lines faintly drawn by pencil as well as stamp marks.

Clearer photos.

Use dot screening (fine/coarse) for clearer photo image output.

Higher quality printing with a PC

The optional RISO PC Interface Card USB2.0 enables direct printing from a PC via USB cable, which keeps the output looking more beautiful. An optional RISO Network Card enables network connection.

Optional color drum for adding color

Spot color can help documents stand out. The machine's color drum is designed to be light, easy to set and user-friendly. It accommodates a wide variety of inks in 21 standard colors, 50 custom colors, plus special order-made colors that can give corporate logos an extra-special look.

Durability and Sustainability

The EZ231 passes the one-million-output test.
It's environmentally friendly, too.

The one-million-output and other durability tests make the machine supremely reliable. It's built to last, extending its cost-effective qualities to the limit. With such high performance made for posterity, the EZ231 is an exemplary long-term performer.

More safety!

Friendly to the environment

The EZ231 consumes energy very sparingly, using just about 1/6th* of the power that a photocopier requires. The ink it uses is made of eco-friendly soy oil. RISO makes products that conform to the International Energy Star Program.

*When compared with a B&W photocopier of approx.1500W.

Full security

The EZ231 features security functions that can limit user access or secure original data in order to protect against information leakage. After printing, the master remains on the drum so that it can be printed at any time. Turn on Confidential mode, and the master on the drum is disposed of to safeguard against undesired printing of confidential documents.

RISO i Quality System

The RISO i Quality System offers a large number of quality
and convenience benefits. Among them are:

- Automatic assurance of optimum print quality
- Prevention of operator error
- Warning of shortages in remaining ink/master volume
- Minimized paper waste

EZ231 EZ221
Master-making / Printing methods High-speed digital master-making / Fully automatic stencil printing
Original Type Book, Sheet
Original Size When using the Glass Platen : 50 mm x 90 mm - 310 mm x 432 mm
When using the AF-VI (option) : 100 mm x 148 mm - 310 mm x 432 mm
Original Paper Weight When using the Glass Platen : 10 kg or less
When using the AF-VI (option) : 50 gsm - 128 gsm
Scanning Area (max.) 297 mm x 432 mm
Print Paper Size 100 mm x 148 mm - 310 mm x 432 mm
Paper Supply Capacity 1000 sheets (64 gsm)
Print Paper Weight Standard : 46 gsm - 157 gsm
When using the Card Feed Kit (option):A4 and smaller size (100 gsm - 400 gsm)
Legal and smaller size (100 gsm - 310 gsm)
A3 and smaller size (100 gsm - 210 gsm)
Image Processing Mode Line, Photo, Duo, Pencil
Resolution Scanning resolution: 300dpi x 600dpi
Print image resolution: 300dpi x 300dpi
Master-Making Time
(for 100% reproduction ratio)
Approx. 25 seconds (for A4 / Portrait)
Printing Area (max.) 251 mm x 357 mm 210 mm x 357 mm
Print Reproduction Ratio 3 enlargements: 116%, 122%, 141%
3 reductions: 87%, 82%, 71%
Margin+: 94%
Print Speed 60 ppm - 130 ppm (5 steps variable)
Print Position Adjustment Vertical: ± 15 mm
Horizontal: ± 10 mm
Ink Supply Fully automatic (1,000 ml per cartridge)
Master Supply / Disposal Fully automatic (250 sheets per roll)
Master Disposal Capacity Approx. 100 sheets
User Interface LED Panel with Progress Arrow indicators, Front Side Operation
Input port USB 2.0*1, Ethernet (100BASE-TX/10BASE-T) *2
Network protocol TCP/IP*2
Power Source EZ231A: 220V - 240V AC, <1.3A> 50Hz - 60Hz EZ221A: 220V - 240V AC, <1.3A> 50Hz - 60Hz
Dimensions (W×D×H) without stand When in use: 1415mm(W) x 655mm(D) x 665mm(H)
When in storage: 780mm(W) x 655mm(D) x 665mm(H)
Weight without stand Approx. 100kg

Specifications are subject to change without notice.Details may vary depending on the region.
*1: Optional RISO Computer Interface card (USB 2.0 ) is required.
*2: Optional RISO Network card is required for network and Macintosh connection