https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/ip8720-pgbk-cleaning-needed-too-often/m-p/384016#M58369 <P>When it has been a few days since I used the printer, the black comes out splotchy. I clean the pgbk head once, and the nozzle pattern looks good, and all is well. A few days later and the problem repeats. I installed a new pgbk tank, but problem did not go away.</P> Mon, 29 Aug 2022 21:33:20 GMT d47binc 2022-08-29T21:33:20Z https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/ip8720-pgbk-cleaning-needed-too-often/m-p/384016#M58369 <P>When it has been a few days since I used the printer, the black comes out splotchy. I clean the pgbk head once, and the nozzle pattern looks good, and all is well. A few days later and the problem repeats. I installed a new pgbk tank, but problem did not go away.</P> Mon, 29 Aug 2022 21:33:20 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/ip8720-pgbk-cleaning-needed-too-often/m-p/384016#M58369 d47binc 2022-08-29T21:33:20Z https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/ip8720-pgbk-cleaning-needed-too-often/m-p/384035#M58373 <P>Are you using Canon ink tank or aftermarket?&nbsp; If aftermarket, you might want to try Canon.</P> Tue, 30 Aug 2022 00:48:11 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/ip8720-pgbk-cleaning-needed-too-often/m-p/384035#M58373 bradthetechnut 2022-08-30T00:48:11Z