A printer that won't print even though it has ink, a blank page
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The Printer Won't Print Even Though It Has Ink: Solutions

Actualizado 18 julio 2026

Summary: If the printer won't print even though it has ink, the problem is almost never the consumable. It's usually the blocked print queue, a lost connection (Wi-Fi or USB), the printer marked as "offline" or paused, a faulty driver or, on inkjet, a clogged print head. This guide runs through the checks in order, from the quickest to the most technical, so the document comes out without changing anything you don't need to.

Few things are more frustrating than a printer that's switched on, with ink and paper, that simply doesn't respond. The good news: in the vast majority of cases it's a software jam or a dry head, not a cartridge fault. Follow these checks in order and don't skip any.

Key points

  • The most frequent cause isn't the ink: it's the jammed print queue or the printer in an "offline" state.
  • On inkjet, a dry head explains close to 80% of the warnings of "won't print in black" (LD Products, 2025).
  • Print a test page from the printer itself: if it comes out, the fault is in the computer or the connection.
  • Some inkjet models won't even print in black if a colour is missing, because they use all the tanks for maintenance.

Why won't the printer print if it has ink?

Because "having ink" and "being able to print" are two different things. Between your document and the paper there's a chain — driver, print queue, connection, firmware and head — and it only takes one link to fail for everything to stop, with the cartridge full. Microsoft sums up the flow like this: the queue manages the documents and sends them out one by one; if one gets stuck, it blocks all those behind it (Microsoft Support, 2025).

The print queue is the operating system software that receives each document, lines it up and feeds it to the printer sheet by sheet. The print head is the inkjet part that fires the micro-droplets through its nozzles; if it dries out, the ink won't come out even if the tank is full.

At Star Toner we test and print with our own compatible consumables before selling them, and we see it daily: the vast majority of "won't print" calls are resolved without touching the cartridge. It's either the queue, or the connection, or a head that's been idle for weeks. Changing the consumable is usually the last thing, not the first.

Quick checks (they resolve half the cases)

Before getting into technical menus, these four checks resolve a good portion of cases in under two minutes. The logic is simple: rule out temporary memory and destination errors before touching anything in the system. Do them in order.

  1. Restart the printer. Switch it off, wait 30 seconds and switch it on. This clears temporary memory errors; manufacturers recommend waiting at least 60 seconds if the machine was very hot.
  2. Restart the document. Cancel the print job and send it again.
  3. Look at the printer's screen. A paper jam, an open cover or an error warning leaves it stopped even though it has ink. If it's paper, here's how to fix a paper jam.
  4. Check it's the right printer. Windows and Mac sometimes send the job to a "virtual" printer (PDF, OneNote, Fax) or to another one in the office.

If it still doesn't come out, let's go to the specific causes.

How do I unblock the print queue?

The jammed queue is the number one reason. A job gets stuck and blocks all the following ones; until you delete it, the printer won't move a single sheet. Microsoft confirms it as one of the main causes of "job stuck in queue" and recommends cancelling the documents and, if necessary, restarting the queue service (Microsoft Support, 2025).

The print queue manages all the waiting documents; if one gets corrupted, everything behind it is held back. That's why, according to the official Windows guide, emptying the queue and restarting the "Print Spooler" service resolves a large part of the cases of a printer that doesn't respond, without touching the cartridge or the head (Microsoft Support, 2025).

On Windows

  1. Open Settings → Bluetooth & devices → Printers & scanners and select your printer.
  2. Click Open print queue.
  3. Cancel all the documents in the list (right-click → Cancel).
  4. If a job won't cancel, restart the service: press Windows + R, type services.msc, find Print Spooler, right-click → Restart.
  5. Still stuck? Stop the spooler service, delete the files in C:\Windows\System32\spool\PRINTERS and start the service again.

On Mac

Open System Settings → Printers & Scanners, select the printer, click Print Queue and delete the stopped jobs. If the queue doesn't respond, right-click on the printer → Reset printing system.

What do I do if the printer shows as "offline" or "paused"?

Windows marks the printer as "offline" when it loses contact for a moment — a Wi-Fi micro-dropout, the machine going to sleep — and sometimes doesn't come back on its own, even though the printer is switched on and connected. HP's own support describes it as one of the most common patterns: the machine appears connected but Windows treats it as offline because of a stuck job or a paused queue (HP Support, 2025).

In Printers & scanners, open the queue and check the Printer menu: untick Use printer offline and Pause printing if they're enabled. Then restart the printer so Windows recognises it again.

Is the connection the problem?

Often yes, and it's easy to rule out. If the printer is on a different network from the computer, or if the USB cable goes through a hub, the job leaves the PC but never arrives. First check the means by which you print.

  • Over Wi-Fi. Confirm the printer is still connected to the network (its screen usually shows this) and that the computer or phone are on the same network. If the printer has lost the Wi-Fi, follow our guide how to connect the printer to Wi-Fi. And if you print from the phone, check how to print from your phone.
  • Over USB cable. Try another USB port and, if you can, another cable. Connect directly to the computer, not through a hub.

Is the driver faulty or out of date?

It's possible, and it happens more than you'd think after every system update. The driver is the software that translates your document into the printer's language; if it gets corrupted after a Windows update, the printer stops responding even though the hardware is perfect. Microsoft includes it among the typical causes of a printing fault and recommends installing the manufacturer's most recent driver (Microsoft Support, 2025).

  1. In Printers & scanners, remove the printer.
  2. Download the most recent driver from the manufacturer's official website (HP, Epson, Canon, Brother), not from third parties.
  3. Add the printer again with the new driver.

And what if the head is clogged? (inkjet only)

If you have an inkjet printer that's been idle for weeks, this is probably your cause. With the tank full, the printer may put out blank or incomplete sheets because the ink has dried in the head's nozzles. It isn't a rare fault: according to LD Products, a dry head is the root of close to 80% of the "won't print in black" warnings on inkjet (LD Products, 2025).

A clogged head isn't fixed by changing the cartridge. Epson recommends first printing a nozzle check pattern: if there are gaps or broken lines, run the head cleaning from the maintenance menu — starting with the automatic one and stepping up the level — and repeat it up to four times before giving up (Epson Support, 2024).

The procedure is similar across all brands: nozzle check → head cleaning → deep cleaning if it still fails. Canon confirms it for its PIXMA models: if the pattern shows missing lines or horizontal white streaks, you need to clean the head, and if the normal cleaning isn't enough, run the deep cleaning or system cleaning (Canon Support, 2024). One important warning: never switch off the printer during a cleaning cycle. If you want the step by step, we have a dedicated guide on how to clean the print heads.

And how to stop it drying out? By printing. One sheet a week — even a black line — keeps the ink flowing through the nozzles and prevents the air bubbles that clog them. If you also see bands or lines in what it prints, the diagnosis overlaps with my printer prints with streaks.

And what if the printer doesn't recognise the cartridge?

If the printer won't print and on top of that shows a warning of an unrecognised, undetected or "non-genuine" cartridge, it's a different problem, common after a firmware update. It isn't a consumable fault: it's the firmware blocking it. We deal with it in depth, with a solution by brand, in my printer doesn't recognise the compatible toner, and we explain why it happens in the HP firmware that blocks cartridges.

Trick · the "test page"

Print a test page from the printer itself (Settings menu → Reports). If that comes out but the document from the computer doesn't, the problem is in the computer or the connection, not the printer. This test saves you half an hour of diagnosis.

Quick summary by brand

Each manufacturer has its official diagnostic tool, and it's worth using it before reinstalling anything by hand: they detect and correct queue and connection faults automatically.

Brand Diagnostic tool
HP HP Smart includes "Diagnose & Fix", which detects and corrects queue and connection faults automatically; HP Print and Scan Doctor does the same from the PC.
Epson Epson Smart Panel shows the printer status, the pending jobs and the nozzle check.
Canon Canon IJ Printer Assistant Tool manages status, queue, nozzle check and head cleaning.
Brother Brother iPrint&Scan and the Status Monitor utility report the real state of the machine.

When is the problem actually the ink?

Sometimes it is, even though the cartridge isn't completely empty. The printer may refuse to print if it detects too low a level, if the cartridge chip is damaged or if a colour is missing. In fact, HP documents that on several of its inkjet models ink is needed in all the cartridges for periodic maintenance tasks, so an exhausted colour also blocks black (HP Support, 2025).

Check the levels from the manufacturer's app. If a recent cartridge fails for no apparent reason, remember you have 3 years of legal guarantee on compatible cartridges in Spain. And to know which consumable you need, look at how to know which toner your printer needs. When it's time to restock, here you have certified compatible laser toner and compatible ink cartridges.

Frequently asked questions

Why won't my printer print if it has ink?

The most common cause isn't the ink, but a job stuck in the print queue, the printer marked as "offline" or "paused", a lost connection or a dry head. On inkjet, the clogged head explains close to 80% of the "won't print in black" warnings (LD Products, 2025). Go through those checks before touching the cartridge.

How do I unblock the print queue on Windows?

Open Printers & scanners, select the printer and click "Open print queue"; cancel all the documents. If one won't cancel, press Windows + R, type services.msc, find the "Print Spooler" service and restart it. Microsoft confirms that emptying the queue resolves a large part of these cases (Microsoft Support, 2025).

My printer shows as "offline", what do I do?

In Printers & scanners open the queue and, in the Printer menu, untick "Use printer offline" and "Pause printing". Then restart the printer so the computer recognises it. HP describes this phantom offline state as one of the most frequent fault patterns (HP Support, 2025). Also check that both are on the same Wi-Fi network.

I have ink but blank or incomplete sheets come out, why?

On inkjet it's usually the clogged head: the ink dries in the nozzles after weeks of disuse. Print the nozzle check and run the head cleaning from the maintenance menu, repeating it up to four times if needed (Epson Support, 2024). Printing one sheet a week prevents it.

Can a printer refuse to print in black if a colour is missing?

Yes. Several inkjet models block all printing, including black, if a colour cartridge is empty, because they use all the tanks for head maintenance tasks (HP Support, 2025). Replace the exhausted colour or look in the settings for the black-only printing option.

Keep reading at Star Toner

Sources

  • Microsoft Support — Fix print job stuck in queue errors in Windows — https://support.microsoft.com/en-us/windows/fix-print-job-stuck-in-queue-errors-in-windows-9ee21bad-4488-45b5-b497-2d8299bd74aa
  • Microsoft Support — Fix print spooler service not running errors in Windows — https://support.microsoft.com/en-us/windows/fix-print-spooler-service-not-running-errors-in-windows-bb0de80a-8c4a-4938-a36a-f89a859113f0
  • Microsoft Support — Fix printer connection and printing problems in Windows — https://support.microsoft.com/en-us/windows/fix-printer-connection-and-printing-problems-in-windows-fb830bff-7702-6349-33cd-9443fe987f73
  • HP Support — Printer Offline Issues – How to Fix — https://support.hp.com/us-en/help/printer/printer-offline
  • HP Support — Fix HP Printer Color or Black Ink Not Printing — https://support.hp.com/us-en/help/printer/black-ink-not-printing
  • Epson Support — Nozzle Check Pattern Prints Incorrectly — https://files.support.epson.com/docid/cpd4/cpd40257/source/pro_graphics/source/troubleshooting/reference/problem_nozzle_check_pattern.html
  • Canon Support — How to check for clogged printhead nozzles — https://support.usa.canon.com/kb/s/article/ART171659
  • LD Products — My Printer Won't Print in Black: What Should I Do? — https://www.ldproducts.com/blog/printer-wont-print-black-what-to-do/

Last updated: July 2026. Star Toner, Central Warehouse, Calle Océano Atlántico 38, 11379 Los Barrios, Cádiz. CHICTRATEC S.L. (NIF B72834534), part of the Recycop Group founded in 1998.

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