Archived from groups: comp.periphs.printers (
More info?)
Hi Rob,
Attached to the cleaning station (the area where the heads rest when
parked or when doing a cleaning cycle) is a tube that leads to a vacuum
pump. In some older models there are two pumps, one for the colored
heads and one for the black head. This pump is driven by the same
gearing that runs the paper advance. It is a fully mechanical pump, that
uses a non-centric cam which "milks" a piece of silicone tubing to
create the vacuum. This vacuum is transferred to the cleaning station
when the heads are pressed over it and sealed with a rubber dam around
them. The vacuum's purpose to to pull ink out of the nozzles of the
head. This both clears partially dried ink, and helps to start the flow
of ink when a new cartridge in installed.
Failure of the pump is relatively rare compared to ink clogs due to
dried ink, but a failed pump can lead to excess dried inks under the heads.
More common that the pump failing are: the rubber dam not sealing well
around the head, meaning vacuum loss, the vacuum purge tube coming off
from the bottom of the cleaning station (more commonly in C and CX
printers), or the cleaning station having become mispositioned and not
engaging correctly.
Art
Rob wrote:
>
> This is not in response to Arthur's post but could be taken into
> consideration also his response is welcomed.
>
>
> I had a 1270 which is identical and the same thing happened, new but old
> stock was never used in a long time 4 years and what ever was tried
> still would not able to print. (New fresh ink cartridges used also)
>
> Taken to Epson repairer and he said it was the pump that had stopped
> working - and he replaced the pump - no charge warranty.
>
>
> Comments appreciated as I don't understand what the pump is or where.
>
>
>
> rm
>
>
>
>
> Arthur Entlich wrote:
>
>> It more than likely is a massive set of clogs. If you haven't yet
>> sent away for my Epson cleaning manual, please do so. It explains how
>> to correct most clogging with Epson printers in a fairly easy and very
>> cost effective manner.
>>
>> The manual is free for the asking. Just email me. The process uses
>> household cleaning supplies for a couple of bucks. I don't sell you
>> anything, and I do not spam or otherwise exchange or sell addresses.
>>
>> Art
>>
>> George Jamieson wrote:
>>
>>> Hi,
>>>
>>> 1290 won't print anything. Black or colour. It operates as if its
>>> printing but absolutely nothing appears on the paper. Cartridges have
>>> been replaced and nozzles cleaned several times. There are no warning
>>> messages about low ink or 'document failed to print'. Sponge has been
>>> sponged...
>>>
>>> Help!
>>>
>>> Regards
>>> George
>>>
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