In need of cartridges on Toner Day!

I find it uncanny that after spending two hours trying to fix a printer due to cartridge problems, I realized that today, October 7th, is Toner Day! The day was established by a KTK Co. Ltd (Nagoya, Aichi) that manufactures and distributes toner cartridges for laser printers. The date is a pun on how October 7th (10/7) can be read "toner"; "10 = to" and "7 = na".

Toner plays an important part in the daily running of an office. It is an essential consumable laser printers. It enables high-quality printing. They are easy, albeit expensive, to replace. They help to improve office efficiency. But it is a real nuisance when only one color runs out and the printer refuses to work even though it has black ink in abundance! This is what happened to me today. I could not get my printer to just print in monotone with the cyan cartridge empty, even though it is not needed to print black! 

Maybe, Toner Day is a good day to check your cartridges aren't running low and order new ones before your printer refuses to work with just one color missing!