The Canon Satera MF8570cdw often stalls during print jobs due to driver conflicts, incorrect paper size settings in the host application, or a corrupted print queue. Resolving this typically involves clearing the spooler, verifying physical media alignment, and reinstalling the specific Universal Driver (UFR II) rather than relying on generic system drivers.
Immediate Queue and Spooler Reset
When the printer status remains stuck even after sending a document, the Windows Print Spooler service may be holding onto a corrupted job file. This is the most common cause of a "stuck" state where the printer appears offline or busy indefinitely. You must clear the temporary files that are blocking new commands from reaching the device.
- Press
Win + R, typeservices.msc, and press Enter to open the Services manager. - Locate Print Spooler in the list, right-click it, and select Stop.
- Navigate to
C:\Windows\System32\spool\PRINTERSusing File Explorer. - Delete all files within this folder. These are the pending print jobs causing the bottleneck.
- Return to the Services window, right-click Print Spooler, and select Start.
This process forces the operating system to discard any malformed data packets sent previously. If the issue persists, restart your computer to ensure the spooler service initializes cleanly with no residual locks on the printer port.
Driver Verification and UFR II Installation
Generic Windows drivers frequently fail to communicate complex status updates with multifunction devices like the MF8570cdw. Canon provides a specialized driver suite known as the UFR II (Ultra Fast Rendering II) driver, which handles large data streams more efficiently. Using an outdated or generic driver is a primary reason for jobs hanging at 1% or getting stuck in the processing phase.
You should remove the existing printer instance from Settings > Devices > Printers & Scanners. Download the latest UFR II driver directly from the official Canon support portal for the MF8570cdw model. During installation, ensure you select the correct connection method (USB or Network IP) so the installer can detect the device properly. Avoid using the default Windows Update drivers, as they lack the specific firmware handshake protocols required by this laser model.
Paper Size and Tray Configuration Mismatches
A subtle but frequent cause of printing delays is a mismatch between the paper size selected in your software and the physical tray configuration. If your document requests A4 paper but the printer detects only Letter-size media in Tray 1, the job will pause indefinitely while waiting for user intervention that never comes.
Check the following settings:
- Application Settings: Ensure the page setup in Word, Excel, or your PDF reader matches the physical paper loaded in the printer.
- Printer Properties: Right-click the printer in Control Panel, go to Printing Preferences, and verify the default paper size is set correctly.
- Physical Trays: Open the front door and check the paper guide sliders. They must be snug against the stack of paper to trigger the sensor correctly.
If you recently changed paper types, such as switching from standard bond to recycled or cardstock, ensure the printer menu reflects this change. Incorrect density settings can cause the fuser unit to hesitate, leading to a perceived stall.
Network Latency and IP Conflicts
For network-connected models, intermittent connectivity issues can manifest as stuck jobs. The printer may accept the data stream but fail to acknowledge receipt due to a dropped packet or IP conflict. This is distinct from a complete offline status; the printer shows as available but does nothing when you click print.
Assign a static IP address to the printer through its web interface (accessible via the LCD screen under Menu > Network Settings > TCP/IP). In your computer’s network adapter settings, ensure the DNS and gateway configurations match your local subnet. If you are using Wi-Fi, consider switching to a wired Ethernet connection for critical documents, as wireless interference often causes high-latency timeouts that hang the spooler.
Firmware and Hardware Checks
If software troubleshooting fails, check the printer’s internal log for error codes. Press the Menu button on the control panel, navigate to User Tools, and look for any recent error logs. Specific codes related to the fuser, toner, or paper feed mechanism will indicate a hardware fault rather than a software glitch.
Ensure all toner cartridges are seated firmly. A loose cartridge can interrupt the communication bus, causing the printer to halt all operations until the component is detected. Additionally, inspect the pickup rollers for dust or debris. Wiping them with a lint-free cloth slightly dampened with water can restore grip if the rollers are slipping, which might otherwise appear as a jammed or stuck print job.
Frequently Asked Questions
Why does my printer show "Processing" but never print?
This usually indicates a corrupted data stream in the print queue. Clearing the spooler folder as described above removes the corrupt file. If the problem repeats, reinstalling the UFR II driver ensures the data compression algorithm matches the printer's expectations.
Can I use the HP Envy driver for this Canon model?
No, printer drivers are proprietary and not interchangeable between brands. Using a generic PCL driver might work for basic text, but it often lacks the advanced features and stability required for the MF8570cdw. Always use the manufacturer-specific driver.
How do I check if the paper size setting is wrong?
Open the document you are trying to print, go to Page Setup or Print Preview, and verify the dimensions. Compare this to the actual paper loaded in Tray 1. If they differ, the printer will wait for manual override unless you configure the driver to auto-select the closest match.
What should I do if the printer is offline despite being connected?
Check the network cable or Wi-Fi signal strength. Restart the router and the printer. If using a static IP, verify it hasn’t been assigned to another device on the network, which causes communication conflicts.
Does cleaning the rollers fix stuck printing?
Yes, dirty rollers can cause paper feed errors that mimic stuck jobs. If the printer tries to pull paper but fails, it may pause indefinitely. Cleaning the pickup rollers with a damp cloth often resolves these mechanical hesitation issues.