ET-7750 Ink pool at hub causing ink smearing?

[turbguy]

"I'll get a substitute for Windex (Glassex, they don't sell Windex here) and see what that'll do. "

I don't know the formulation of Glassex. Original Windex contains a small amount of ammonium, which is critical to performance (IMO).

 

[Milena]

"I'll get a substitute for Windex (Glassex, they don't sell Windex here) and see what that'll do. "

I don't know the formulation of Glassex. Original Windex contains a small amount of ammonium, which is critical to performance (IMO).

Thank you for the heads-up! I've looked into it and found the following:

Glassex

• Water
• Solvent: Methoxyisopropanol, Propylene Glycol
• Soap: propylene glycol butyl ether, Capryl Glucoside, “Sulphuric Acid, mono-C10-18alkyl esters, sodium salts” (these are monoesters of sulfuric acid and alcohols with 10-18 carbon atoms), Sodium Laureth Sulfate
• Acidity regulator: ethanolamine, ammonium hydroxide (= ammonia)
• Solvent: 1-butoxypropan-1-ol
• Perfume
• Colorant: Coloring Agent.

Windex:

• Water. Provides a liquid base for a product.
• 2-Hexoxyethanol Cleaning Agent. ...
• Isopropanolamine Cleaning Agent. ...
• Ammonium Hydroxide Cleaning Agent. ...
• Lauryl Dimethyl Amine Oxide Wetting Agent. ...
• Sodium Dodecylbenzene Sulfonate Wetting Agent. ...
• Fragrance Fragrance. ...
• Liquitint® Sky Blue Dye Dye.

The ingredients don't say me much, but Glassex has some ammonia in it.

 

[Ink stained Fingers]

Wow, that all fits into one bottle ?..... jokes aside - I read about a complaint in the German printer forum that a user of an Epson printer running on 5 inks like the ET7700 but on cartridges exhibits the same problem - a build up of pigment ink smear on the cleaning pad, a residue which does not get removed via normal cleaning cycles. The user is just removing the ink smudge with a piece of kitchen paper towel frequently. Based on reading this I'm afraid that there is a constructional weakness with this type of printer mechanism. You might run a test avoiding prints with the pigment ink - normal paper or matte paper settings - and observe the situation - this just as a short term work around.

 

[Mark2d]

Hello all,

I just created an account because I'm hoping someone here can help me out. I actually have multiple questions.

Since the beginning of 2019 I have an Epson ET-7750 which works fine in general, very happy with it.
However, this ink pad (I'm not sure what it's called) where the printhead rests keeps getting filled with ink residue on the left side of the pad (Please see the images I have attached under the spoiler tag). This is not after a few cleaning cycles or anything, this is purely from printing! I think it cleans itself from time to time, but I did not manually let it clean/waste ink in the past few months.

1. What can I do to prevent this? Can I use a certain liquid to clean this pad so it doesn't build up again? What is causing this, anyway?

I think this is the cause of the ink smearing problems I'm getting from time to time. I have cleaned the printhead before with a paper towel and have ''cleaned'' the pad by letting a paper towel suck up some of the ink. Also, the maintenance box is not full yet. And I have had this problem since the beginning. It just didn't cause smears as often before.

2. Is there a proper way to move the printhead to the left side to get access to its ''hub''? I do not like unplugging the printer while it's printing, because after I turn it on again it takes a long time before it is ready to go again, making lots of noises. Once it didn't even want to print until I restarted it twice. Very worrisome!

3. Sometimes the rollers catch ink as well. Well I think it's certain rollers since when that happens it'll leave 1 or 2 straight stripes behind on the print. Which ones are these and how do I clean those? I find it hard to clean inside the printer.

In the last year of having the printer I haven't printed a lot (but kept it going and clean). From now on I will print larger quanities so I cannot have this problem where it creates a pool of ink and get ink smears on my prints. I mostly print on glossy paper with the ''Epson Paper Glossy'' setting to create stickers.

Thank you in advance for helping me! I will actively follow this thread so if you have questions, need more information or photos; just ask!

Spoiler: Photos

1. Paper towel 2. Photo from today (the bright one) and 3. Photo from a few months ago (the darker pic). 4. Example of 'minimal' ink smearing
View attachment 10658View attachment 10656View attachment 10657View attachment 10659

I have the exact model, and the exact problem, even after replacing the maintenance box. That spongy part where the printhead come to rest is over-soaked and the left side of it looks caked with excess ink. It leaves streaks on the right side of my prints, sometimes clumps of black ink. I am now going to attempt a paper towel cleanup of the excess.

 

[Ink stained Fingers]

I am now going to attempt a paper towel cleanup of the excess.

I think that's about the only type of action you can do in this case, on a somewhat regular base to prevent that staining; I think it's a deposit of the black pigment ink which does not get cleaned away properly.

 

[zip007py]

pick up et7700 printer from local freecycle.Same problem as you in the passed.smear on paper,nozzle not correct.Use several strips of kitchen paper towel.To remove lots of black ink. Then started to clean away all the black ink around the edges of the pad.remove the foam pad wash in water and let to dry. In the meantime got a syringe and try to inject cleaning solution into the centre hole,No luck,Got a drill same size as the needle drill the centre hole very slowly not to go to deep.otherwise you will need to get a new pump.foam pad.Try to inject fluid slowly adding more pressure.Add 2 choices either the blockage would clear or the pipe may come off..also when under pressure the rubber hose would expand creating more pessure to remove blockage. Then pressure became easy to inert more liquid.After a couple more squirts and checking underneath printer for signs of any wet. OK,,The next step was to see if the ink was going into the waste box,remove box,Make sure you have a rag in front of the waste box hole.as i did not do.but corner of my eye saw jets of solution going across the room.Which tells me the system is clear of any more blocks.Time will tell is the ink pad on top is running down to the pump. A thought the pump was a vacuum type.but inside the pump,is a rubber tube from the top going into a circle and back out to the waste box.When it calls for a clean the centre revolves and offset middle part and quashes and squeeze along the short length inside the. pump Only time will tell if this does the trick.. I'm thinking of modifying the rear tube on top to allow additional needle injection of cleaning fluid at a later date,so i can inject cleaning fluid into the system every few months depending when the next bloackage appears.Hope this helps ,,At the end of the day the machine was free,but gives excellent high quality photos

 

[Ink stained Fingers]

i must admit that I'm not really clear what you have done or are trying to do. The main problem with the ET-7750 was the build-up of ink smear from the pigment black ink at the rubber lip which is wiping off the nozzle plate from the bottom. The ink residue is buidling up there, the ink smear contaminates the nozzle plate which then leaves ink stripes on the bottom of the paper you are printing on. About the only remedy is a regular clean up of the area around the rubber lip to prevent all that. Another option woould be to use a dye black ink to replace the pigment black ink.