Make RICOH SP 204SN DDST Working on Linux and MacOS
[print cups 204sn linux ricoh mac 
RICOH SP 204SN DDST is a nice affordable multifunctional (scan, print and copy) printer available at around $150 and with toner available at $70 (or $35 for 3rd party). It works nice under Windows but doesn’t work under Linux or Mac due to lack of driver.
Fortunately, there is an open source repository ricoh-sp100, which enables the RICOH SP 204SN DDST under CUPS. It was intented for CUPS driver for Ricoh Aficio SP 100 familty printers, but also works for RICOH SP 204SN as well.
Installation
To install it, you need to have a Linux (MacOS doesn’t work, as the dependency cannot be met), for which I recommend to use the raspberry PI. You can take the following steps (for more detail please refer to INSTALL):
git clone https://github.com/madlynx/ricoh-sp100.git
cd ricoh-sp100
chmod +x check-requirements
./check-requirements
Please install any missing dependencies you found from the output, you should have something like below to proceed:
pbmtojbg [REQUIRED] : Yes, version: PBMtoJBIG converter 2.1 -- creates bi-level image entity (BIE) as output file
identify [REQUIRED] : Yes, version: Version: ImageMagick 6.8.9-9 Q16 arm 2017-03-01 http://www.imagemagick.org
Ghostscript [REQUIRED] : Yes, version: 9.06
ps2write [REQUIRED] : Yes
pbmraw [REQUIRED] : Yes
inotify-wait [optional] : No
Then copy pstoricohddst-gdi to cups’ filters directory and make sure it is executable by lp user and owned by root:root
chown root:root pstoricohddst-gdi
cp pstoricohddst-gdi /usr/lib/cups/filter
Finally open CUPS webinterface to add your Ricoh printer to CUPS. You could verify it is working by printing a test page: printers\ricoh\maintenance\print test page.
Google Cloud Print
Please refer to A Raspberry Pi Cloud Print Proxy for how to make the Ricoh works with Google Cloud Print via Raspberr Pi.
echo "deb http://davesteele.github.io/cloudprint-service/repo cloudprint-jessie main" | sudo tee /etc/apt/sources.list.d/cloudprint.list
wget -q -O - https://davesteele.github.io/key-366150CE.pub.txt | sudo apt-key add -
sudo apt-get update
sudo apt-get -y upgrade
sudo apt-get -y install cloudprint-service
sudo cps-auth
sudo systemctl restart cloudprintd