Question about Epson RX620 All-In-One InkJet Photo Printer

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Epson Photo RX620: Printing Pink Lines

Hello. I've performed everything suggested by the User Guide i.e. cleaned/aligned print heads, changed ink cartridges, and returned to factory settings. It continues to print pink lines throughout my documents (text and pics) on every printed row. Nozzle check is fine except for the pink lines. Epson Tech Support recommends an exchange, but warranty is out. Any suggestions? Thanks in advance.

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Re: Epson Photo RX620: Printing Pink Lines


None of these answers are accurate.  I know precisely what your problem is, and you aren't going to like what I have to say.  What you are experiencing will happen eventually to every Epson printer and there is nothing you can do about it other than to buy a new printer.  I have an Epson Stylus Photo 895 ( a 500 dollar printer in its day), which has the same issue.  I am just waiting for my ink cartridges to run out in order to buy a new one.

Endless research on google has turned up that there is no solution to this problem.  The issue you are having is with the Epson print head, which uses piezo technology.  What that means is that unlike HP or Canon printers which are thermal, piezo uses a small piezoelectrical cell to force ink out of the chamber.  It has advantages over thermal in that thermal requires a precise temperature to get ink on the page (what actually happens is that ink is heated, it forms a bubble, and the bubble bursts onto the page, hence the name BubbleJet).  Therefore, the ink has to have fairly precise thermal ink properties making it more expensive to manufacture.  Also, the ink on a BubbleJet (or HP) is wetter when it hits the page, and since the ink is heat resistant or order to properly form the bubble, the printer needs to incorporate a fast drying technology which consumes more energy.  The massive advantage of thermal is that the print head is on the cartridge, not on the printer itself; change your cartridges, get a brand new print head.  It makes cartridges more expensive, but reduces problems such as what you are experiencing.

Piezo on the other hand, always shoot ink through the same print head.  Once the head become damaged over time, the piezoelectric cell is no longer accurately pushing out the ink, and there is nothing you can do about it.  If you are lucky, it is only dried ink in the print head, but I can almost guarantee you that it is not.  Dried ink can be cleaned by repeated head cleanings, even manual ones involving rubbing alcohol.  However, I know that those pink lines are caused by the deterioration of the cell, and cannot be fixed.  If if were only dried ink, you wouldn't be limited to just pink lines on the page, you would see other colours.  If the cell is not doing its job, the lines are always pink (often called magenta when you google this problem).  The solution is to acquire a new print head.  Unfortunately, the cost of replacing an Epson print head is IDENTICAL to the cost of a new Epson printer.

So basically you have no choice, you need to buy a new printer.  Were I you, I would purchase a new thermal inkjet printer so that you get a new print head with every cartridge.  Look around before you buy to find out exactly how much the cartridges will cost, and then you will know which brand to buy.  Although piezo *can* make for a cheaper printer at the outset, Epson simply charged what HP and Canon do for their replacement cartridges because that is what people are used to paying, but you really do get more in a thermal inkjet catridge.

Sorry for the bad news,

Posted on Oct 25, 2007

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Re: Epson Photo RX620: Printing Pink Lines

Follow the info in my previous posts about under head cleaning. Then stop putting compatible carts in the machine (if you use them) and run a couple cleaning cycles through the driver or button panel with genuine inks.

Let me know via this post what difference this makes.

Posted on Oct 18, 2007

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