I am using the printer crate: GitHub - talesluna/rust-printers: A rust library to printing APIs implementation for unix (cups) and windows (winspool). · GitHub

I have this code:

    for printer in all_printers.iter()
    {
        // Prints qrcode to printer after finding the right printer in list
        if printer.name.eq(r"\\DC01\Downstairs printer")
        {
            println!("printer: {}", printer.name);
            println!("Found printer, printing file");
            //println!("tmp_filepath: {}", &tmp_filepath.display().to_string());
            //printer.print_file(&tmp_filepath.display().to_string(), PrinterJobOptions::none()).unwrap();
            printer.print_file(&tmp_filepath.display().to_string(), PrinterJobOptions
            {
                name: Some("My print job"),
                raw_properties: &[("copies", "1"),("document-format", "RAW")],
                converter: Converter::Ghostscript(GhostscriptConverterOptions::pngmono()),
                
            }).unwrap();
            break;
        }
    }

However I get this error:

thread 'main' (11600) panicked at src\main.rs:141:16:
called `Result::unwrap()` on an `Err` value: PrintersError { message: "Ghostscript exit with code 1", failure: ConverterFailure, backtrace: <disabled> }
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

if I opened the png file from windows photo app and print it to the printer there are no issues, however if I print using this code then it won't print anymore and if I used this code:

    for printer in all_printers.iter()
    {
        if printer.name.eq(r"\\DC01\Downstairs printer")
        {
            println!("printer: {}", printer.name);
            println!("Found printer, printing file");
            //println!("tmp_filepath: {}", &tmp_filepath.display().to_string());
            printer.print_file(&tmp_filepath.display().to_string(), PrinterJobOptions::none()).unwrap();

            break;
        }
    }

it will print out binary garbage on the paper. Do I need to convert it into xps, pdf etc and then I can print it to the printer? And if so how do I convert it using ghostscript? Are there alternative printer crates out there that can print an image directly?

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