Qrinto + 931-BL Store Manager Setup Guide

Choose how you'll print

Pick a path to see only the steps you need. Both share the same one-time install of Multidriver and PrintTrays, so you can switch any time.

	Without login	Store manager
Start from	MENU › Print on your own 931BL	MENU › For stores · Log in
What you print	A design you upload	Customer orders from the Orders queue
Choosing a tray	Pick it under Select Printer each time	Saved tray setup; Qrinto recommends the tray
Multidriver & PrintTrays	Required, once per PC	Required, once per PC

Before you start

Windows 10 or 11 PC
931-BL switched on and connected to the PC
Chrome or Edge
Permission to install programs
Your store email and password for qrinto.com
A design file to print (image or PDF)

Install Multidriver

Do this first. Multidriver gives each tray its own printer, so Qrinto can send every product to the right paper without changing settings. Why not the single driver?

A1Download
Download the 931-BL Multi Driver

Get it from the 931-BL driver page. Qrinto's PrintTrays Required box also has a Download 931-BL Multi Driver button.

Choose Multi Driver, not Single Driver. The single driver shows only one printer, so you'd reset the paper settings on every job.
Done
A2Install
Run the installer

Open the downloaded file and follow the prompts. If Windows asks "Do you want to allow this app to make changes to your device?", select Yes.

When it finishes, Windows lists six printers for the one 931-BL.
Done

931BL (MP Tray)Hand-fed media
931BL (Tray 1)Own settings
931BL (Tray 2)Own settings

931BL (Tray 3)Own settings
931BL (Tray 4)Own settings
931BL (Tray 5)Own settings

Open "Print on your own 931BL"

No account needed. You'll upload your design and Qrinto will offer to install PrintTrays the first time.

B1Open
Open the menu and choose "Print on your own 931BL"

Go to qrinto.com. At the top right, select MENU, then Print on your own 931BL.
Done
B2Upload
Upload your design, then select Download PrintTrays

Upload your design. The first time on this PC, a box titled PrintTrays Required appears. Select the green Download PrintTrays button and continue with Part C.

If a small box asks to let qrinto.com "Access other apps and services on this device", select Allow.
Done

Log in to the store panel

The store panel is where you set up trays and print customer orders.

B1Open
Open the store login page

Go to qrinto.com. Select MENU at the top right, then For stores · Log in.
Done
B2Sign in
Enter your store email and password

Type your store's Email and Password, then select the black LOG IN button.

Tick Remember me on the store PC so you stay signed in. Use Forgot your password? if you need a new one.
Done

Install and connect PrintTrays

PrintTrays is a small free program that runs in the background and lets qrinto.com talk to the printers on this PC. In each screenshot, the red box shows what to select. How does it work?

C1Start
Go to Trays and select "Download PrintTrays"

After logging in, select Trays in the top menu. The first time on this computer, you'll see PrintTrays isn't running on this PC. Select the green Download PrintTrays button.
Done
C2C1Download
Select "Download for Windows"

A new tab opens on the PrintTrays download page. Select the blue Download for Windows button. The file saved is PrintTrays-Setup-1.2.0.exe.

The same installer is on noritsucanada.com and noritsu.com. Either one works.
Done
C3C2Install
Install PrintTrays

Open PrintTrays-Setup-1.2.0.exe from your Downloads folder. If Windows asks to allow changes, select Yes. Then select Next, Install and Finish.

PrintTrays starts by itself in the system tray. No window opens, and that's normal.
Done
C4C3Connect
Select "Connect to PrintTrays"

Go back to the PrintTrays tab in your browser, or open the PrintTrays connection page. Select the blue Connect to PrintTrays button.
Done
C5C4Once per PC
Select "Trust PrintTrays's certificate"

The first time, the page says Couldn't reach PrintTrays. That's expected on a new install. Select Trust PrintTrays's certificate.

If the browser asks to "Access other apps and services on this device", select Allow.
Done
C6C5Once per PC
Select "Advanced"

A small window says "Your connection is not private". This is expected. Select Advanced.

Only continue if the address in that window is 127.0.0.1:8181. That address is this PC, where PrintTrays runs. Never do this for any other website.
Done
C7C6Once per PC
Select "Proceed to 127.0.0.1 (unsafe)"

Select the link Proceed to 127.0.0.1 (unsafe). The window closes itself after about a second and the page reconnects on its own.
Done
C8C7Check
Look for "Connected"

You'll see a green message: Connected to v1.2.0 — printer(s) found. Setup is complete.
Done

Print your design

With PrintTrays connected, every tray of your 931-BL is listed on the print screen.

D1Reload
Go back to Qrinto and refresh

Return to your qrinto.com tab and press F5. You'll see PrintTrays connected and your trays listed under Select Printer.

Read the checks above the list. Paper size doesn't match and Not edge to edge (E2E) warn you before you waste paper; tick the box to print anyway.
Done
D2Print
Pick the tray, set copies and print

Select the tray that has the right paper, for example Noritsu 931BL (Tray 3) for 4 × 6 in. Use Settings on the selected tray to check size, orientation and color. Set Copies, then select Print 1 copy.

Printing the same products often? The store manager path saves each tray's setup so you don't pick settings every time.
Done

Set up your trays

Do this once, and again only when you change the paper in a tray. Qrinto uses it to recommend the right tray for every order.

D1Turn on
Go back to Trays and turn on your trays

Return to the qrinto.com tab and press F5 to reload. On the Trays page, turn a tray's switch green so it appears as a printer for orders.

To change its paper size, orientation or color, select Change.

If a tray is missing, select Rescan.
Done
D2Configure
Set the tray options, Apply, then Save

A window shows Paper Size, Orientation, Duplex and Color for that tray, plus scale and paper source. Match them to the paper that's physically loaded, then select Apply.

When all your trays are set, select Save tray setup at the bottom of the page.

Example: MP Tray for 4 × 6 in E2E prints, Tray 2 for 5 × 7.25 in E2E cards in landscape. Settings marked LIVE are sent to the printer.
Done

Print orders

This is your everyday routine. Every new customer order appears in Orders.

E1Every order
Go to Orders and select "Print on 931BL"

Select Orders in the top menu. Each new order shows the product, size, card style, orientation and amount to collect at pickup. Select the green Print on 931BL button.
Done
E2Every order
Pick a tray and print

The Pick a tray window lists every tray that matches the order. The RECOMMENDED tray is already selected, so usually you just select Print to….

If no tray is an exact match, the button turns red and says Print to… anyway. Select it to print on the closest tray regardless.

Seeing "anyway" often? A tray probably isn't set up for that size. Add or update one in Part D.
Done

New→Printing→Ready for pickup→Delivered After you print, the order moves to Printing. When it comes off the printer, select Printed and it moves to Ready for pickup. Use Print Again for a reprint and Undo to step back.

Need to print a one-off design instead of an order? See the no-login path.

How PrintTrays works

PrintTrays 1.2.0 is a small bridge on your PC. qrinto.com in your browser talks to it at wss://127.0.0.1:8181, and it talks to the Windows printer driver.

STEP 1
Download
Same installer from noritsucanada.com or noritsu.com.
STEP 2
Install
Runs in the system tray and creates its own security certificate and key.
STEP 3 · ONCE
First try fails
The browser doesn't trust the new certificate yet. Expected, not a bug.
STEP 4 · ONCE
Trust it
Advanced › Proceed in a small popup that closes itself.
STEP 5 · ONCE
Auto-reconnect
The page retries by itself and saves PrintTrays's key.
STEP 6
Ready to print
Printer list fetched live; size, color, copies and tray sent with each job.

Local-machine only

PrintTrays listens only on 127.0.0.1. Nothing outside this computer can reach it.

Every response is signed

A dedicated RSA key signs each message, so the page knows it really came from PrintTrays.

Key pinned on first use

The key is saved after the first connection. A different key later means a different install, and the page asks before trusting it.

Nothing leaves the machine

Print jobs go from your browser to PrintTrays on this PC, never to an outside server.

Download PrintTrays: noritsucanada.com/print-trays/download noritsu.com/print-trays/download

Troubleshooting

The Trays page says "PrintTrays isn't running on this PC"

Look for the PrintTrays icon in the Windows system tray, near the clock. If it isn't there, open PrintTrays from the Start menu or install it again (C2–C3).

Then go to the PrintTrays connection page, select Connect to PrintTrays, and reload Qrinto with F5.

Qrinto still says "PrintTrays Required"

Check that PrintTrays is running: look for its icon in the system tray, near the clock. If it isn't there, open it from the Start menu or install it again (Part C).

Then select I've installed it - retry connection in the box, or reload with F5.

It says "Couldn't reach PrintTrays"

The certificate isn't trusted yet. Repeat C5–C7: Trust PrintTrays's certificate, then Advanced, then Proceed to 127.0.0.1 (unsafe).

Also check you selected Allow when the browser asked to access other apps and services. If you selected Block, open the site settings (the icon left of the address bar) and allow it.

Only one printer shows, "Noritsu 931 BL"

The single driver is installed. Install the 931-BL Multi Driver (Part A), reload Qrinto, and select Rescan on the Trays page. MP Tray and Trays 1–5 should appear separately.

No trays or printers appear

Make sure the 931-BL is on and connected, and that it appears in Windows under Settings › Bluetooth & devices › Printers & scanners. Then select Rescan.

A tray is set up but doesn't appear in "Pick a tray"

Its switch is off, or the change wasn't saved. Turn it green, select Save tray setup, then reopen the order.

The print button is red and says "anyway"

No tray exactly matches the order's size or paper. You can print to the closest tray, but the result may be scaled or have borders. To fix it for next time, set up a tray for that size in Part D.

The print came out on the wrong paper or size

The tray settings don't match what's loaded. On Trays, select Change on that tray, correct it, select Apply and then Save tray setup. Then use Print Again on the order.

A new computer, or PrintTrays was reinstalled

Do Part C again on that computer. If the page asks whether to trust a new PrintTrays key, only accept it if you just installed PrintTrays yourself.

Choose how you'll print

Print your own design

Set up trays and print orders

Before you start

Install Multidriver

Download the 931-BL Multi Driver

Run the installer

Open "Print on your own 931BL"

Open the menu and choose "Print on your own 931BL"

Upload your design, then select Download PrintTrays

Log in to the store panel

Open the store login page

Enter your store email and password

Install and connect PrintTrays

Go to Trays and select "Download PrintTrays"

Select "Download for Windows"

Install PrintTrays

Select "Connect to PrintTrays"

Select "Trust PrintTrays's certificate"

Select "Advanced"

Select "Proceed to 127.0.0.1 (unsafe)"

Look for "Connected"

Print your design

Go back to Qrinto and refresh

Pick the tray, set copies and print

Set up your trays

Go back to Trays and turn on your trays

Set the tray options, Apply, then Save

Print orders

Go to Orders and select "Print on 931BL"

Pick a tray and print

How PrintTrays works

Download

Install

First try fails

Trust it

Auto-reconnect

Ready to print

Local-machine only

Every response is signed

Key pinned on first use

Nothing leaves the machine

Troubleshooting