The image in the PDF is blurred when the printer is called from the command line to print it

[fushengss]

When I used this command "lp -d ricoh -n 1 -o sides=one-sided -o ColorModel=Gray -o resolution=600dpi -o print-quality=5 -P 1-1 /home/print/shell/../printer/print_file/address.pdf", the image on the final printed file was fuzzy. There was no problem with the printer itself. When I used Windows Chrome to print the same file, the image was not fuzzy. How can I find this problem and fix it? I installed cups2.4.10, cups-filters, libcupsfilters, libpdd, ghostscripts10.01.0, all compiled and installed

[fushengss]

The system is Ubuntu 22, and I installed all the open source fonts of Google fonts into the system.

[michaelrsweet]

It would help to have the PPD file for the queue (/etc/cups/ppd/ricoh.ppd) and a debug error_log file (run cupsctl --debug-logging, then print something, then attach the /var/log/cups/error_log file).

[fushengss]

This is my pdd file and error log, please help me take a look
log&pdd.zip

[michaelrsweet]

Hmm, so this queue is using Foomatic, transferring over to cups-filters...

[fushengss]

Yes，I also found this point, which is used by the Cups-Filter compilation installation by default. So，The image is blurry because of this, how can I fix it？

[yogesh1801]

can i work on this issue? @michaelrsweet

[tillkamppeter]

You do not need to ask @michaelrsweet whether you can work on this bug, he is especially also not the maintainer of all our repositories, and even for what he is maintaining, like CUPS, just work on the issue you like to work on. Any contribution is highly appreciated.