PrintersDigital Duplicator
RISO SJ9490U Printer Manual
Setup, everyday use, maintenance and troubleshooting for the digital duplicator, with verified specifications.
- TypeDigital Duplicator
- Speed200 ipm
- Energy use98.8 kWh/yr
- Est. yearly cost$16.80
About the RISO SJ9490U
The RISO SJ9490U is a digital duplicator certified under the ENERGY STAR program for imaging equipment.
It uses a stencil (digital duplicator) imaging engine and is rated at 200 images per minute (ipm) in monochrome.
Its typical electricity consumption (TEC) is 1.9 kWh per week, or about 98.8 kWh per year. It is set to enter sleep 5 minutes after the last job.
Specifications
| Brand | RISO |
|---|---|
| Model number | SJ9490U |
| Product type | Digital Duplicator |
| ENERGY STAR product category | Digital Duplicators |
| Marking technology | Stencil (digital duplicator) |
| Media size format | Standard |
| Color capable | No |
| Rated monochrome speed | 200 ipm |
| Automatic duplex (two-sided) | No |
| Professional imaging product | No |
| Remanufactured product | No |
| Typical electricity consumption (TEC) | 1.90 kWh/week |
| TEC, annualized | 98.8 kWh/yr |
| Default delay to sleep | 5 min |
Safety information
- Plug the duplicator directly into a grounded wall outlet. Laser and duplicator engines draw a large current surge when the fuser or drum heats up, so do not connect them to an uninterruptible power supply (UPS), a light-duty extension cord or a power strip shared with other heavy loads.
- Keep the ventilation openings clear and leave the clearance around the unit that the manual specifies for paper trays, covers and service access.
- Switch off and unplug the unit before cleaning it or reaching deep inside to clear a jam.
- Keep ink cartridges, bottles and waste-ink boxes away from children. If ink contacts skin, wash with soap and water; if it gets in the eyes, rinse with water and seek medical advice if irritation persists.
- Digital duplicators are heavy. Use two or more people, or the lifting equipment specified in the installation guide, and lock floor-standing casters once the unit is in place.
Setup
- Unpack and remove shipping materials
Remove all tape, foam and protective film, including pieces inside the covers and paper trays.
- Choose a location
Place the unit on a sturdy, level surface (or its floor stand) away from direct sunlight, heating vents and humid areas. Leave room to open covers and pull out trays.
- Install consumables
Install the master roll and ink tube in their holders as shown on the inside labels, then load the paper feed tray.
- Connect to your computer or network
Connect the unit to your network (Ethernet or Wi-Fi where available) or directly by USB, following the setup guide. Network connection lets several users share it and makes firmware updates easier.
- Install drivers and software
Add the printer in your operating system. Many current network printers work with driverless standards such as AirPrint, Mopria or IPP Everywhere; install the full manufacturer driver if you need finishing, security or accounting features.
- Check the sleep timer
The unit is shipped to enter sleep 5 minutes after the last job. Keep this setting (or shorten it) to minimize idle energy use.
Using your duplicator
Making copies
The duplicator creates a stencil master from your original and then prints from it at high speed. It is most economical for runs of dozens to thousands of copies of the same page; for a handful of copies, a copier or printer is usually cheaper.
Sleep and power settings
The factory sleep delay is 5 minutes. Use the auto-off or weekly timer (if offered) to switch the unit off overnight and on weekends.
Care and maintenance
| When | What to do |
|---|---|
| When prompted | Replace ink, masters or other consumables, and empty used-master or waste containers. |
| Every 6 months | Install firmware updates from the manufacturer and vacuum dust from the exterior vents. |
Troubleshooting
Most duplicator problems come from media, consumables, connections or settings. Try these steps first; for numbered error codes, look up the code in the manufacturer's manual or support site.
| Problem | Possible cause | What to try |
|---|---|---|
| Shows offline or jobs stay in the queue | Network or IP address changed; wrong driver or port; printer asleep and not waking. | Restart the printer and computer, print a network configuration page, re-add the printer using its current address, and reserve that address in your router. |
| Paper or media jams | Wrong media for the tray; overfilled tray; worn rollers; debris in the path. | Remove jammed media in the direction of the paper path, check for torn pieces, reload within the fill line, and clean the rollers. |
| Slow to start the first job | Unit waking from sleep. | This is normal. Group jobs together; avoid disabling sleep, which raises energy use considerably. |
Energy use and running costs
The RISO SJ9490U has a typical electricity consumption (TEC) of 1.9 kWh per week. ENERGY STAR's TEC test simulates a typical office week — a set number of jobs each workday, with the device dropping into sleep between jobs, overnight and over the weekend. Over 52 weeks that is about 98.8 kWh per year, roughly $16.80 a year at $0.17 per kWh.
Heavier printing volumes, disabling sleep, or a longer sleep delay than the default 5 minutes will raise real-world consumption. Paper typically has a much larger environmental footprint than the electricity, so duplex printing saves more than any power setting.
Frequently asked questions
What type of device is the RISO SJ9490U?
It is a digital duplicator in ENERGY STAR's standard media-size category.
How fast is the RISO SJ9490U?
It is rated at 200 images per minute (ipm) in monochrome. Actual speed depends on the document, resolution and whether you print one- or two-sided.
How much electricity does the RISO SJ9490U use?
Its ENERGY STAR typical electricity consumption is 1.9 kWh per week, about 98.8 kWh per year or $16.80 at $0.17/kWh.
How long does the RISO SJ9490U take to go to sleep?
It is shipped with a default sleep delay of 5 minutes after the last job. You can change it in the control panel or web interface, but shorter delays save more energy.
Is the RISO SJ9490U ENERGY STAR certified?
Yes. It appears on the ENERGY STAR certified imaging equipment list, with a certification date of December 2025.
Sources and disclaimer
Specifications on this page come from the ENERGY STAR certified printers dataset published by the U.S. Environmental Protection Agency (record certified December 9, 2025), retrieved October 7, 2026.
The setup, operating, maintenance and troubleshooting guidance is written by ManualHarbor's editors for this specific product type and configuration. It is an independent guide — not a reproduction of the manufacturer's manual — and ManualHarbor is not affiliated with RISO. Always follow the safety instructions, installation requirements and warranty terms supplied with your unit, and contact RISO or an authorized service provider for warranty repairs and replacement parts.
Running-cost figures use assumed U.S. average utility prices and are estimates for comparison only. See our editorial methodology for details.
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