Remaining lenth of paper on roll

[Becca-Tally123]

I have a HP DesignJet Z5600. How can I determine how much paper is left on a roll? I have several partial rolls and would like to know how much is left on each. Thank you!!

[MaRiro]

You can enable 'barcode tracking', which tracks both remaining length and media type. It works as follows: when a new roll is inserted, the printer will ask for its length. You know that length from the media roll specs. Then, every time you unload/load that roll, a small barcode will automatically keep track of the info.

You cannot use this method for already-used rolls, but will be helpful for the new ones.

[Repairatrooper]

If you have not used tracking on the rolls as suggested in another answer, there is not much the printer can do. If you have a new roll, weigh it and then compare the weight of your remaining rolls. For instance if a new 300 foot roll weighs 3 kilograms then we know that a roll that weights 1.5 kilograms would be around 150 feet. This of course assumes that the two rolls are identical paper type and weight.