Re: Ancient HP IIIP

I hate questions I don't have an answer for Art<g>.
What I suspect happens is that the drum picks up small amounts of toner from
the waste compartment at all times when it is printing and the blade fails to
clean it.
Tony

Arthur Entlich <e-printerhelp@xxxxxxxx> wrote:
>Got a question regarding this.
>
>I first thought wiper blade also, but, why would the OCP drum pick up
>toner to begin with, if the drum wasn't being charged to pick it up.
>Wiper blade or not, the toner has to be attracted to the drum first to
>make it print gray.
>As I understand the purpose of the wiper blade, it is to remove excess
>toner that remains attracted to the drum during the printing process
>after it has transferred the majority of it to the paper but before the
>drum is "rewritten" to with new information, to avoid "ghosting" from
>the old information. The drum is supposed to only pick up toner in the
>areas where black is supposed to print. If the printer is working
>correctly, why is the drum picking up toner on one side to begin with,
>regardless of the wiper blade condition?
>
>Art
>
>Tony wrote:
>
>> "me@xxxxxxxxxxx" <me@xxxxxxxxxxx> wrote:
>>
>>>Now, I've dug out my old HP IIIP as the main printer is playing up. I
>>>should have the users manual out of a storage box tomorrow, which might
>>>help, but it is covering almost half the page with grey, I took the
>>>toner cartridge out and there was toner left on the photosensitve drum,
>>>I wiped it clean, but it was able to pick up sufficient toner to
>>>replicate the half page of grey (right hand side as opposed to top or
>>>bottom half). Is there anything else I can do to clear it before I get
>>>another toner cartridge. At a guesstimate I would say the cartridge is
>>>about seven years old.
>>>
>>>--
>>>Timothy
>>
>>
>> Timothy
>> Almost certainly the wiper blade has failed, this fails more often than
>>other
>> components when the cartridge has not been used for a reasonably long time.
>>The
>> symptoms match a wiper blade failure exactly. The blade cannot be repaired
>>so
>> either a new cartridge or a new wiper blade is required (if you replace the
>> wiper blade without the correct lubricant you will be throwing your money
>>away).
>> Tony
>>

.

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