Regarding your recent inquiry about the HP 74 or HP 75 poor print quality problem your HP OJ5780 printer is currently experiencing, we suggest you perform the following corrective steps to help resolve the issue:
Cartridge & printer maintenance should be evaluated - ensure both ink cartridges and flex cable contact surfaces (where the cartridge interfaces to the carriage inside the printer) are thoroughly clean:
http://inkjet411.com/?page_id=1519
1) Gently blot the cartridge Nozzle Plate with a damp lint-free towel/wipe - a small amount of ink should be dispensed, and be visible, on the towel (all 3 colors should be present for a Tri-color cartridge).
2) If no ink is dispersed from nozzle plate (i.e. visible on towel) or ink cartridge completely fails to print on paper after installed in printer, then more drastic cartridge and printer cleaning steps will likely need to be performed to recover ink cartridge (NOTE: foam inside cartridge can dry out and become very hard - the foam must be moist with ink to function correctly (i.e. ink flows and wets the nozzle plate). Refer to 'clogged ink cartridge recovery' video here:
http://inkjet411.com/?page_id=2818
Providing the ink cartridges are clean, the problem may be caused by a dirty wiper blade or poor seal in the service station (capping station where the ink cartridges park when not in use) and this is causing the poor jetting / print performance issue you are observing. Remove the ink cartridges and thoroughly clean the wipers and seals:
http://inkjet411.com/?page_id=1519
If the issue continues then please refer to 'Troubleshooting' section on our website - the printer manufacturer websites are also provided here:
http://inkjet411.com/?page_id=106
Run a quick printer 'self test' (see link below for instructions) or print one of the Inkjet411 test prints to evaluate cartridge performance (i.e. 4-color test print):
http://inkjet411.com/?page_id=146
Advanced HP Printer Diagnostics (i.e. printer self tests, etc.):
http://inkjet411.com/?page_id=1813
You can also check our 'Print Quality' page of the 'General Information' section of the Inkjet 411 website and follow additional suggestions provided, particularly if the cartridge is not causing the poor image quality problem (i.e. printer driver settings issue):
http://inkjet411.com/?page_id=1432
-Thank you
Inkjet411 Team Member (
[email protected])
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