I'm a developer. is there a way to send raw data/commands to this over usb? if so, how?

Yes, but it requires a library like LibUSB or WinUSB and possibly a "filter" driver. For the data formats to send it, look for the raster command reference pdf on the Brother downloads site.

Is there any laminated paper for clean room that can We use this label printer?

I thought I'd chime in on this because I have a very similar application. They do not sell laminated labels per se, but they do offer some non-paper labels. They call it film tape. In my case I use the 2.4" wide continuous length labels and you can buy DK-2212 (black on white, 50' length) or DK-2606 (black on yellow, 50' length). Keep in mind that these are quite expensive compared to the paper labels but given the clean room application, I'm guessing paying 6X or more per label may not be a big issue when the alternative is a particle shedding label. I don't know for sure that these film tape labels won't shed particles, but the rolls I bought felt like plastic with adhesive so I'm guessing they will at a minimum shed less than their paper counterparts. If you have different label needs (not the 2.4" wide rolls) just search on amazon for "brother film tape" and you should get a lot of results. tldr: They offer non-paper labels, search amazon for "brother film tape" to find some possibilities that may work for your clean room application.

What kind of label paper you need for this I need to print labels out for my delivery packages ?

The QL800 uses the DK 1202 labels (2.4 in x 3.9 in) for shipping labels.

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Brother RQL-800 -(Q L800) High-Speed, Professional Label Printer (Renewed),White

Product ID: 116256437

Details

Brand
Brother
Color
white
Connectivity Technology
USB
Item Weight
2.4 pounds
Max Printspeed Monochrome
93
Model Name
Renewed Model:

⚡93 ppm blazing speed

🎨Dual-color Black/Red printing

✂️Auto-cutter for 3 ft banners

Description

⚡ Label like a pro, speed like a boss!

LIGHTNING FAST OUTPUT - Print up to 93 labels per minute—never miss a deadline.
VERSATILE MEDIA HANDLING - Supports Brother DK pre-sized labels and continuous tapes for ultimate flexibility.
POSTAGE READY CONVENIENCE - Print postage directly from your desk—streamline your shipping workflow.
VIBRANT DUAL COLOR LABELS - Create eye-catching black and red labels that stand out in any office.
PROFESSIONAL GRADE PRECISION - 300 dpi resolution ensures crisp, clear text every time.

The Brother RQL-800 is a high-speed, professional-grade thermal label printer capable of producing up to 93 black or red labels per minute at 300 dpi. It supports Brother DK pre-sized and continuous-length labels with an auto-cutter for banners up to 3 feet. Ideal for office, shipping, and organizational needs, it also prints postage directly, making it a versatile and efficient tool for busy professionals.

Specifications

ASIN	B07MRGX4VL
Additional Printer Functions	Print Only
B&W Pages per Minute	93
Best Sellers Rank	#3,198 in Amazon Renewed ( See Top 100 in Amazon Renewed ) #83 in Renewed Office Products #274 in Desktop Label Printers
Brand	Brother
Built-In Media	Labels
Color	white
Color Depth	1 bpp
Compatible Cartridge	[Brother thermal cartridges]
Compatible Devices	Laptops, PC
Control Method	Touch
Customer Reviews	4.3 4.3 out of 5 stars (163)
Duplex	auto
Global Trade Identification Number	00012502599333
Hardware Interface	USB
Ink Color	Black, Red
Item Dimensions D x W x H	8.4"D x 4.9"W x 5.6"H
Item Type Name	RQL800
Item Weight	2.4 pounds
Manufacturer	Brother International
Maximum Copies Per Run	9999
Maximum Copy Resolution Black and White	300 dpi
Maximum Copy Resolution Color	300 x 600 dpi
Maximum Copy Speed Black and White	93 pages_per_minute
Maximum Media Size	4 x 6 inch
Maximum Print Resolution Black and White	300 dpi
Maximum Sheet Capacity	100
Maximum print Resolution Color	300dpi
Model Name	Renewed Model: RQL800
Model Number	RQL800
Model Series	RQL
Number of Licenses	1
Other Special Features of the Product	Energy Star
Paper Size	8.5 x 11
Print media	Labels
Printer Connectivity Type	USB
Printer Output Type	Monochrome
Printer Type	Thermal
Resolution	300 x 300
Specific Uses For Product	Label printing, Package labeling, Envelope labeling, File folder labeling, Name badge printing, Postage printing, Home use, Office use, School use
Total Usb Ports	1
UPC	012502599333
Unit Count	1 Count
Warranty Description	2 year manufacturer
Warranty Type	limited warranty
Wattage	204 watts

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