Parts for Riso brand Risograph GR3770

[Kopyrtek]

Artsmith,
Check the pressure roller to see if it has swollen on the ends.Most of the time it is that or there is a build up of ink on the roller.Unless it is over the whole page, then you may have a different problem.

[Artsmith]

Hey, thanks for getting back with me so quickly.

The pressure roller looks pretty straight. I cleaned it up (it did have some buildup on it) but the print looks about the same. I printed one large gray rectangle on a different printer, then copied it on the Riso. The whole image looks the same from corner to corner: light print with white flecks through it. I'm not sure if that's just the grain of the paper or the fibrous stuff the master's made of.

So I'm still stuck. Is there a next likely possibility? Or, just as good, does anyone know of Riso techs in the Portland Oregon area? If I can get this sucker going, I'm going to use it alot, so finding a good tech would be cool, too. I called the company that originally sold it and they won't work on an "obsolete" GR.

Thanks again in advance.

[Kopyrtek]

Well......i guess the best thing to do is find someone to look at it.The pressure could be off,the ink bead shaft could be broken,the squeegee roller gear may not be turning all the time.
There are a multitude of things to go wrong at this point.So good luck in finding someone.If not,return here and we will help as best we can.

[risoman]

Poor printed image on GR3770

Hello
I guess that the problem with your machine is a build up of dried ink on the micromesh screen around the drum.
First remove the master film of the drum. Moisture the screen with some diluant solution using a cloth. Repeat this operation a few times, until the dried ink is removed. Then make a master and check the result.
Probably this machine whas stored to long without running.

Enjoy

[risoman]

Hello
You have to check if the one-way clutch onder the driving gear of the write roller is still glued to the gear. If you can move the write roller in both directions, the problem is here.

[totonicone]

I have risos for parts

Let me know what do you need. i may have them.
totonicoe

I am thinking of buying a GR3770 and wondered if anyone knows of a source to buy parts (not ink or masters)? Our local Riso dealer stated that parts are no longer available. Any help would be appreciated.

[FPG]

Parts for my GR3770

totonicone, I am looking for (2) load springs and the silver aligning roller for my GR3770. I had a tech out and determined that this is the problem.
thanks, FPG press@fpgraphics.com

[risoman]

Just got my first Riso. ($100 from a local church. Figured I couldn't go wrong.) It's a GR3750 with almost 2 mil prints on it, moves paper just great. It came with a black drum and a red drum. Both of them seem to turn out the same results: a print that looks kinda light or faded. Can anyone tell me if this is more likely an ink delivery issue or a master/burn issue, or something else completely? Thanks.

Hello
All what you have to do is remove the paper master from the drums and clean the outside of the drums with a clot soaked in petrol, and leave it a few minutes. I guess that the ink is dried on the surface of the drum.

Succes

[Ratna]

can u supl;y Tehernal print head for Dr3750 A3 400dpi, can u supl;y Tehernal print he

can u supl;y Tehernal print head for Dr3750 A3 400dpi

[risoman]

Re: Parts for Riso brand Risograph GR3770

Hello
I have only a YPH for GR3770 (A3 600dpi
sorry

Best regards

[JuliaWarner]

Re: Parts for Riso brand Risograph GR3770

i believe my riso RA4200 has this issue you mentioned with the vertical lines running top to bottom - any suggestions how to fix this? what part exactly needs replacing? thnks! -julia

[alexis]

Re: Parts for Riso brand Risograph GR3770

hi,
i need GR3750 EPROM 5.02A or higher.
It's for connect SC7700 to the GR...
Thanks !

[franjobrzi]

Re: Parts for Riso brand Risograph GR3770

Hello all,
I am new to this forum. I found it looking for the motherboard (electronics) for your Riso GR 3770
DALI someone has worn out and that the desktop board.
Please give me someone can help in this.

franjobrzi

[sklemetti]

Re: Parts for Riso brand Risograph GR3770

I have a 3750 that is not working. The motor control board is not working. And other parts that I scavanged for my 3770.

I have a 3770 that just stopped working. The pressure control stopped working a year ago and I had to run things in test mode. The master making has been intermittantly giving problems, making blank masters, and just stopped permanently as it started giving T10 errors. It may need a ribbon cable that goes to the scanner.

I have some drums that I am looking to sell.
I have GR Blue and Red and Black drums. And a Black HD drum. The regular black does not
work in 3770 but the HD and color ones do.They work and I have tubes of ink for them and carrier cases. I don't know how much they go for.

If you need parts from either for spares, other than the parts that don't work, we can work out a deal.

I am at sklemetti@centralprint.net

[feak2012]

Re: Parts for Riso brand Risograph GR3770

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Also as a solo agent of Seiki, currently we can offer customers whole series duplicator consumables, it covers genuine Seiki duplicator machine, used duplicators, duplicator ink, duplicator master and parts for Seiki, Riso, Duplo,Ricoh and Gestetner and other brand.

For these parts, you can find its OEM number or description from our website: www.kreyoly.com

And needs, you can mail us, we can quote you, and we can offer you these small parts and delivered by DHL or TNT carrier.

Thanks.

Sean