Which brand printer should I choose for a laser printer, that prints fast, and can make custom cards, and print different size paper up to a3

For your specific needs, I would recommend considering the HP Color LaserJet Pro MFP M479fdw. This is a laser printer that offers fast printing speeds, with the capacity to print up to 28 pages per minute.

Key Features and Benefits:

1. Versatility: It supports a variety of paper sizes up to A4. For A3 size, HP does not currently offer a model in the LaserJet range that supports it. However, other brands like Brother or Canon do offer this feature.
2. Custom Cards: This device can print on different types of media including cardstock, ideal for custom cards.
3. Speed: As mentioned, it can print up to 28 pages per minute which makes it one of the fastest printers in its category.
4. Duplex Printing: It also has automatic two-sided printing which saves time and paper.
5. Wireless Connectivity: It supports wireless printing and can be connected to multiple devices.

Price Range: The HP Color LaserJet Pro MFP M479fdw is priced around $600, prices might vary based on location and retailer.

Pre-purchase Questions:

1. What are the ongoing costs of ink/toner for this printer?
2. Is the printer compatible with your current devices?
3. What is the expected lifespan of this printer based on your printing volume?

For maintenance, it's important to clean the printer regularly and replace the toner cartridges as soon as they run out. Always use HP original cartridges for best performance and avoid common pitfalls like paper jams or print quality issues.

If you experience any issues with your printer, try troubleshooting steps such as restarting the printer, checking for software updates or clearing paper jams. However, for more serious issues like constant error messages or mechanical problems, it might be necessary to seek professional service.

In terms of environmental impact, HP is committed to sustainable printing with initiatives like the HP Planet Partners program, which allows for easy recycling of cartridges.

Remember, while HP printers are known for their reliability and performance, the right printer for you depends on your specific needs and budget.