printhead cleaning

I really hope that this forum can help me with this problem. I've been working on it for over 3 weeks and feel that I have exhausted what I can find in internet searches. Basically: I have a used OfficeJet 6978. It worked perfectly for about 100 pages until the black ink started coming out...

Hello. I read advice here about using PTFE oil to lubricate printhead rails. I have PTFE bike chain lubricant for dry weather. After applying it the printer no longer squeaks when printing. I performed cleaning using cleaning liquid that had syringe, tube and adapters in the package because it...

I have a Canon TS9020 that I bought lightly-used on eBay about a year and a half ago, and have been experiencing a persistent banding problem. I noticed banding in photos shortly after I started using it, but didn't pay attention, thinking it was something I could later fix with an...

Canon Ink Tank PGI-9R and Ammonia Book: The Chemistry of Inkjet Inks Editor: Shlomo Magdassi 2010 by World Scientific Publishing Co. Pte. Ltd. ISBN-13 978-981-281-821-8 ISBN-10 981-281-821-9 Link to Canon SDS/MSDS Ink Cartridges: https://www.canon-europe.com/sds/pgi-series-cartridges/ Canon...