Results 1 to 3 of 3
  1. #1
    Master Of The Obvious 10,000+ Posts
    How long of a paper roll can I load?

    blackcat4866's Avatar
    Join Date
    Jul 2007
    Location
    Lapeer, Michigan
    Posts
    22,445
    Rep Power
    462

    How long of a paper roll can I load?

    It's on an HP Designjet T2600, but this question applies to any wide format device printing onto roll paper.

    This question was a dilemma for me, since the maximum roll length is only limited by the physical space in the spindle area ... in this specific case 5 7/8" (the diameter of the spindle end).

    At first I went the intuitive route:
    Paper_Roll_Size_Calculation.jpg
    Let's say the outside of the 3" core is 3.3125" and the maximum roll diameter is 5.875". The average diameter of every wrap of paper is 4.59375", or 14.43169" circumference. How many average wraps of 20# bond (0.0038" caliper) are there?:
    (5.875" - 3.3125")/0.0038"/2 = 337.17105 wraps
    (14.43169" x 337.17105 wraps)/12" = 405.49'
    Surprisingly accurate considering that I'm dealing in averages.

    Then I found the formula on a sheet metal working website:
    Paper_Roll_Dimensions.jpg
    Length (feet) = (Π/4)*(ODē-IDē)/Caliper/12"
    (3.14159265/4)*(5.875ē-3.3125ē)/0.0038/12 = 405.2901'

    I'm a little rusty with my linear algebra, but I think that both of these formulas solve out to the same thing. The only difference is the rounding at various stages of the calculation. =^..^=
    Last edited by blackcat4866; 05-09-2021 at 06:10 PM.
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

  2. #2
    Trusted Tech 50+ Posts
    How long of a paper roll can I load?


    Join Date
    Jul 2019
    Location
    SLC, UT
    Posts
    55
    Rep Power
    10

    Re: How long of a paper roll can I load?

    Based on the specs for that machine that HP has put out it is 300 ft., or this to be more specific. I am personally not going to go through all the math I will go off of what they have put out in the specs for the machine.

    Input tray - 1 roll - Roll (35.98 in x 300 ft) weight: 60 g/mē - 328 g/mē

  3. #3
    Senior Tech 250+ Posts DRichard's Avatar
    Join Date
    May 2008
    Location
    Knoxville, TN
    Posts
    482
    Rep Power
    43

    Re: How long of a paper roll can I load?

    Quote Originally Posted by blackcat4866 View Post
    It's on an HP Designjet T2600, but this question applies to any wide format device printing onto roll paper.

    This question was a dilemma for me, since the maximum roll length is only limited by the physical space in the spindle area ... in this specific case 5 7/8" (the diameter of the spindle end).

    At first I went the intuitive route:
    Paper_Roll_Size_Calculation.jpg
    Let's say the outside of the 3" core is 3.3125" and the maximum roll diameter is 5.875". The average diameter of every wrap of paper is 4.59375", or 14.43169" circumference. How many average wraps of 20# bond (0.0038" caliper) are there?:
    (5.875" - 3.3125")/0.0038"/2 = 337.17105 wraps
    (14.43169" x 337.17105 wraps)/12" = 405.49'
    Surprisingly accurate considering that I'm dealing in averages.

    Then I found the formula on a sheet metal working website:
    Paper_Roll_Dimensions.jpg
    Length (feet) = (Π/4)*(ODē-IDē)/Caliper/12"
    (3.14159265/4)*(5.875ē-3.3125ē)/0.0038/12 = 405.2901'

    I'm a little rusty with my linear algebra, but I think that both of these formulas solve out to the same thing. The only difference is the rounding at various stages of the calculation. =^..^=
    This is the best I can do...

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Get the Android App
click or scan for the Copytechnet Mobile App

-= -= -= -= -=


IDrive Remote Backup

Lunarpages Internet Solutions

Advertise on Copytechnet

Your Link Here