With respect to your HP OJ J4680 printer, which uses HP 901/901XL ink cartridges, it sounds like this is either a compatible/clone cartridge from overseas in which case you should not remove the orange top as it is molded into the cartridge, or you recently purchased or had the ink cartridge refilled (at Costco, etc.) and the storage clip (which seals the base of the cartridges to prevent the nozzles from drying out) is attached to the ink cartridge. If this is a storage clip, just press hard on the clips top lever at an angle to remove. See our videos on cartridge care tips and how to troubleshoot an ink cartridge error/problem on the HP OJ J4500, J4600 and OJ 4500 series printer models:
HP 901 Ink Refilling & Cartridge Care Tips - Everything you need to know: http://www.youtube.com/watch?v=jTtNj6rN4g4HP Officejet J4500 J4600 4500 Printers Tap 41 Diagnostics - HP 901 Incompatible Print Cartridges:http://www.youtube.com/watch?v=S6uATgXxQlEIf you need to purchase new HP 901 ink cartridge(s) and are trying to cut costs, we suggest you try a remanufactured ink cartridge from
http://www.inkplicity.com/ as their ink cartridges typically have the lowest cost in the USA, have a high reliability rating, come with a 1-year warranty and provide free shipping for all orders above $20.
NOTE: If you are interested in the top \'refill friendly inkjet printer models\', our suggested list is posted on-line and our internal labs have verified there are no issues (in ink compatibility or color output) with all of these models:
http://inkjet411.com/?page_id=3585 INK REFILLING SERVICES (SUPER CHEAP):Costco USA Ink Refill Service (460+ stores):
http://www.costcoinkjetrefill.com Costco Canada Ink Refill Service (59 stores):
http://www.ca.costcoinkjetrefill.com Costco Mexico Ink Refill Service (35 stores):
http://es.costcoinkjetrefill.com/ Costco United Kingdom (select stores):
http://uk.costcoinkjetrefill.com/ Fry\'s Electronics Ink Refill Service (34 stores):
http://www.frys.com/ads/page51 Best Buy Canada (13 stores):
www.geeksquad.ca/inkrefill/ For any additional questions you may contact us directly:
[email protected] -Thank you