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  1. #1
    Green Printer is offline Senior Member
    Join Date
    Sep 2007
    Posts
    529

    Default inkjet head service life

    Has any manufacturer said what the service life is for inkjet heads.? I have seen anywhere from 150,000 8.5 x 11's to 6000 hours.
    An inkjet printer using the 150,000 piece heads that is capable of 2,500 8.5 x 11 sheets per hour could blow through heads every 75 hours. At 24 hour 5 day a week operation would need to replace heads 1.6 times a week.

    I have seen this same head on some web label presses at 150 feet per minute you would get about 1,000 minutes or 16.7 hours of production before you would need to change heads.

    A 24 hour 5 day a week operation with the 6,000 hours of head life could go over 48 weeks.

    You would go through 400 heads of the 150,000 rated impression head verses 1 of the 6,000 hour heads.

    If the 6,000 hour head cost 100 times more than the 150,000 impression head it would still be only 1/4 th of the cost .

    Now if it takes 10 minutes to change the 150,000 head and you need to do it 400 times that is 4,000 minutes or 67.7 hours of production time lost just to change heads.
    Last edited by Green Printer; 05-05-2012 at 11:28 AM.

  2. #2
    Alienjones is offline Junior Member
    Join Date
    Dec 2012
    Location
    Redland City Queensland Australia
    Posts
    15

    Default

    Quote Originally Posted by Green Printer View Post
    Has any manufacturer said what the service life is for inkjet heads.? I have seen anywhere from 150,000 8.5 x 11's to 6000 hours.
    An inkjet printer using the 150,000 piece heads that is capable of 2,500 8.5 x 11 sheets per hour could blow through heads every 75 hours. At 24 hour 5 day a week operation would need to replace heads 1.6 times a week.

    I have seen this same head on some web label presses at 150 feet per minute you would get about 1,000 minutes or 16.7 hours of production before you would need to change heads.

    A 24 hour 5 day a week operation with the 6,000 hours of head life could go over 48 weeks.
    Snipped
    .
    Measuring the life of a print head by how much paper it prints on is like sitting in a saddle while waiting for the horse to come.
    The meaningful measurement can only be by ink quantity. One of my iPF8100 Canon printers has just killed it's left print-head. SO far this printer has used eight of it's 12 original 300ml tanks which I replaced with 700 Ml tanks and none of these has shown any use yet. The printer will be three years old next March.

    From my costing I can fairly accurately say its used close to 500 Ml of ink from the left bank of tanks. 6x500 = 3000 Ml of ink. passed through this head in three years of light usage. The HP latex printer is only two years old and has killed one print-head. It has used over 5000 Ml of ink in total. For economy of ownership I'd go for HP every time. Individually replaceable print-heads at under $200 each certainly beats $600 each x2 for Canon print-heads but then only the Canon prints photographs at a quality equal to what my old Durst Lambda used to produce.

    Canon told me I could expect unpredictable life from print-heads. I just hope the right head lasts out its lease that ends in March.


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