The RISO EZ391 Digital Duplicator

Easy and Economical Ledger-Sized Printing

RISO’s new EZ391 is an entry-level ledger-sized digital duplicator offering 600e dpi imaging, with 11” x 17” printing and scanning, glass platen, and an intuitive LED key pad user panel. With new features and benefits previously not available in older models, such as the new ECO Mode, the EZ391 brings technological advances and increased customer satisfaction over previous generation models.

Enhanced Printing

Print on a wide range of stocks from thick media to odd-sized and die-cut stocks, recycled papers, envelopes, and more. Spot color can also be added easily and affordably to produce high-quality newsletters, calendars, posters, and more! Additionally, the RISO i Quality SystemTM consistently monitors the status of the digital duplicator along with its supplies, while automatically making adjustments to ensure the best print quality in every print.

High-Quality 600e dpi Imaging

Providing much improved imaging over standard 300 x 600 dpi imaging, the EZ391 features 600e dpi imaging (dpi refers to the actual number of perforations in the master that the digital duplicator produces from a scan). 600e dpi digitally enhances the 300 x 600 scanned data to emulate a 600 dpi output image. The perforations are paired, providing an appearance of a smoother line than is obtained with 300 x 600 dpi.

Green is Good

The EZ391 has a new ECO Mode feature, providing a competitive edge by setting new standards for environmentally-friendly printing! When activated, the ECO Mode decreases the printing pressure, reducing power consumption by 3%! Like all RISO digital duplicators, the EZ391 is ENERGY STAR certified, making it a sound environmental choice!

Additional Features

RISO i Quality SystemTM: Two-way communication between RISO i Quality System equipped printers and their supplies is made via integrated RF (Radio Frequency) tags. These tags relay information to the printer, assuming optimum first print quality and superior output throughout the entire job. The i Quality light panel on the EZ391 indicates ink and master levels, as well as when the master disposal box needs to be emptied, when and where there are paper jams, along with check settings, and call for service.

User Management

Make budgeting by department or user group simple! User Management allows you to set up 100 accounts and 32 groups, eliminating the need for key card counters. Take control of your printing and budgeting needs by using this feature to set up new user groups, rename, disable, limit usage, and get usage reports!

Progress Arrows

RISO’s progress arrows provide visual confirmation of the status of where you are in the master-making or printing process.


Master-Making/Printing Methods

High-speed digital master-making/Fully automatic stencil printing

Original Type

Book, Sheet

Original Size

When using the Glass Platen : 1 31/32″ x 3 9/16″-12 3/16″ x 17″ (50 mm x 90 mm-310 mm x 432 mm)
When using the AF-VI (option) : 3 15/16″ x 5 27/32″-12 3/16″ x 17″ (100 mm x 148 mm-310 mm x 432 mm)

Original Paper Weight

When using the Glass Platen: 22 lb (10 kg) or less
When using the AF-VI (option): 13 lb bond-34 lb bond (50 gsm-128 gsm)

Scanning Area (max.)

11 7/16″ x 16 3/4″ (291 mm x 425 mm)

Print Paper Size

Standard: 3 15/16″ x 5 27/32″-12 3/16″ x 17″ (100 mm x 148 mm-310 mm x 432 mm)

Paper Supply Capacity

1000 sheets (17 lb bond (64 gsm))

Print Paper Weight

Standard: 12 lb bond-110 lb index (46 gsm-210 gsm)
When using the Card Feed Kit (option): 27 lb bond-221 lb index (100 gsm-400 gsm)

Image Processing Mode

Line, Photo, Duo, Pencil


Scanning resolution: 300 dpi x 600 dpi
Printing image resolution: 600e dpi (600 dpi x 600 dpi: Perforation density on the master)

Master-making Time (for 100% reproduction ratio)

Approx. 17 seconds (for Letter/Landscape) 19 seconds (for Letter/Portrait)

Printing Area (max.)

11 7/16″ x 16 3/4″ (291 mm x 425 mm)

Print Reproduction Ratio

3 enlargements (inch): 121%, 129%, 154%/ (metric): 116%, 122%, 141%
3 reductions (inch): 78%, 65%, 61%/ (metric): 87%, 82%, 71%
Zoom: 50%-200% in 1% increments
Margin+: 94%

Print Speed

60 ppm-130 ppm (5 steps variable)

Print Position Adjustment

Vertical: ± 19/32″ (± 15 mm), Horizontal: ± 3/8″ (± 10 mm)

Ink Supply

Fully automatic (1,000 ml per cartridge)

Master Supply/Disposal

Fully automatic (215 sheets per roll)

Master Disposal Capacity

Approx. 100 sheets

User Interface

LCD Touch Panel with Progress Arrow indicators, Front Side Operation

Power Source

EZ391U: 100 V-120 V AC, 50 Hz-60 Hz/220 V-240 V AC, 50 Hz-60 Hz

Dimensions (W x D x H) without Stand

When in use: 55 23/32″ (W) x 25 25/32″ (D) x 26 3/16″ (H) (1415 mm (W) x 655 mm (D) x 665 mm (H))
When in storage: 30 23/32″ (W) x 25 25/32″ (D) x 26 3/16″ (H) (780 mm (W) x 655 mm (D) x 665 mm (H))

Weight without Stand

Approx. 222 lb (101 kg)