Can't print from my selected printer

I have two printers connected to a Mac Mini. One is a large-scale Epson color inkjet printer WF-7510, the other is a Brother HL-L2300D B&W for office-style use. As of yesterday, I can select the small B&W printer, then, in Photoshop, open a small B&W image (a QR code) and when I bring up the print interface, the printer I chose will be the selected printer, but the only paper size I can get to appear on the interface is an 11 X17 tabloid sheet suitable for the big color printer. Nothing I do can change it. I have installed a fresh set of drivers for the Brother printer, I have declared it the Default printer, but nothing seems to work. Needless to say, when I try to print on the smaller printer using an 11 X17 sheet, I get the "Invalid paper size" warning, and nothing happens. Any ideas?