Reverse side laser printing

I have heard, and seen on some laser printers, where
if I print on one side of a sheet and then re-feed it
to print on the other side, it is not good because it
can "dirty" the mechanism.

Is this true? And what about printers that are duplex
printers?

TIA

bob <bob@ble.com> wrote:
>I have heard, and seen on some laser printers, where
>if I print on one side of a sheet and then re-feed it
>to print on the other side, it is not good because it
>can "dirty" the mechanism.
>
>Is this true? And what about printers that are duplex
>printers?
>
>TIA

I have never heard of that and the more I think about it the more it sounds
like nonsense. There is nothing on the paper that can "dirty" the printer. I
think you have been misinformed. The only problem I have ever heard of with
duplexing is that a few printers have difficult as a result of the paper curl
that can occur, this will not however damage the printer.
Tony
MS MVP Printing/Imaging

Tony wrote:
> bob <bob@ble.com> wrote:
>> I have heard, and seen on some laser printers, where
>> if I print on one side of a sheet and then re-feed it
>> to print on the other side, it is not good because it
>> can "dirty" the mechanism.
>>
>> Is this true? And what about printers that are duplex
>> printers?
>>
>> TIA
>
> I have never heard of that and the more I think about it the more it sounds
> like nonsense. There is nothing on the paper that can "dirty" the printer. I
> think you have been misinformed. The only problem I have ever heard of with
> duplexing is that a few printers have difficult as a result of the paper curl
> that can occur, this will not however damage the printer.
> Tony
> MS MVP Printing/Imaging

I think it was that the toner from the first
printing would rub off from the heat of the
second printing onto the [drum](?). Does
that make sense?

On Thu, 11 Oct 2007 05:02:34 GMT, bob <bob@ble.com> wrote:

>I think it was that the toner from the first
>printing would rub off from the heat of the
>second printing onto the [drum](?). Does
>that make sense?

The laser printer I have uses teflon coated rollers around the fuser
assembly so if you print on second side, the images from the first
side wouldn't transfer. Check with your printer's manual if it states
2 sided printing is allowed or not.
--
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would start getting spammed sales@platshop.com eye for an eye. for good
luck, sales@platshop.com and sales@platshop.com

Well, in theory some toner could come off and contaminate some of the
paper path, but I haven't found it to be a major problem, and I use
almost exclusively laser and photocopy rejects in my printers for any
testing, home documents, etc.

The one area it does effect is the paper take up wheels which I find
require cleaning every so often. But considering how many thousands of
sheets of paper I dave (and the trees they come from, its a small price
to pay.

bob wrote:

> I have heard, and seen on some laser printers, where
> if I print on one side of a sheet and then re-feed it
> to print on the other side, it is not good because it
> can "dirty" the mechanism.
>
> Is this true? And what about printers that are duplex
> printers?
>
> TIA

I'm actually surprised that more doesn't come off during the heating
process, but my experience is that it pretty much stays where it is. As
I mentioned in a previous posting, some seems to get rubbed on at the
paper transport rollers.

Art

bob wrote:

> Tony wrote:
>
>> bob <bob@ble.com> wrote:
>>
>>> I have heard, and seen on some laser printers, where
>>> if I print on one side of a sheet and then re-feed it
>>> to print on the other side, it is not good because it
>>> can "dirty" the mechanism.
>>>
>>> Is this true? And what about printers that are duplex
>>> printers?
>>>
>>> TIA
>>
>>
>> I have never heard of that and the more I think about it the more it
>> sounds like nonsense. There is nothing on the paper that can "dirty"
>> the printer. I think you have been misinformed. The only problem I
>> have ever heard of with duplexing is that a few printers have
>> difficult as a result of the paper curl that can occur, this will not
>> however damage the printer.
>> Tony
>> MS MVP Printing/Imaging
>
>
> I think it was that the toner from the first
> printing would rub off from the heat of the
> second printing onto the [drum](?). Does
> that make sense?

Thanks everyone for the feedback.

Since the take up roller was brought up, I have a friend
with an HP Laserjet 2100 who prints postcards. He feeds
through the auxiliary feeder and the take up roller sometimes
does not pickup a postcard (I think it slips). He has
tried to clean it and it works temporarily.

Are there places to buy these pickup rollers for self
replacement?

TIA

Arthur Entlich wrote:
> Well, in theory some toner could come off and contaminate some of the
> paper path, but I haven't found it to be a major problem, and I use
> almost exclusively laser and photocopy rejects in my printers for any
> testing, home documents, etc.
>
> The one area it does effect is the paper take up wheels which I find
> require cleaning every so often. But considering how many thousands of
> sheets of paper I dave (and the trees they come from, its a small price
> to pay.

go to
http://www.printerworks.com/Catalogs...RollerKit.html
The two parts he needs are at the top right and top left. The other three parts
will not help with this problem but may help with issues picking paper from
tray 2 or with print quality.
go to
http://www.image1products.com/techdocs/HP.htm
download the 2100 manual which will explain how to replace these parts, it is
not very hard to replace the tray 1 parts but the tray 2 parts can be tricky
even though it looks easy.
See also http://www.printertechs.com/tech/mkinst/mk-2100-1.php which has links
to instructions for replacing these parts if you don't want the whole manual.
Tray 1 instructions are items 5 and 6 on this page.
The two part numbers are RB2-2900-000CN (Roller) and RB2-6348-000CN (Pad). They
are identical parts to those used in the LJ2200 and several other models and
sometimes the part numbers change.
If you go to
http://www.jpcomputerstore.com/servl...et+2100+Series
They have both of these available but you should be able to google for either
part number and get a number of hits.


bob <bob@ble.com> wrote:
>Thanks everyone for the feedback.
>
>Since the take up roller was brought up, I have a friend
>with an HP Laserjet 2100 who prints postcards. He feeds
>through the auxiliary feeder and the take up roller sometimes
>does not pickup a postcard (I think it slips). He has
>tried to clean it and it works temporarily.
>
>Are there places to buy these pickup rollers for self
>replacement?
>
>TIA
>
>Arthur Entlich wrote:
>> Well, in theory some toner could come off and contaminate some of the
>> paper path, but I haven't found it to be a major problem, and I use
>> almost exclusively laser and photocopy rejects in my printers for any
>> testing, home documents, etc.
>>
>> The one area it does effect is the paper take up wheels which I find
>> require cleaning every so often. But considering how many thousands of
>> sheets of paper I dave (and the trees they come from, its a small price
>> to pay.

Tony
MS MVP Printing/Imaging

Way cool Tony! Thanks for all the links!!!


Tony wrote:
> go to
> http://www.printerworks.com/Catalogs...RollerKit.html
> The two parts he needs are at the top right and top left. The other three parts
> will not help with this problem but may help with issues picking paper from
> tray 2 or with print quality.
> go to
> http://www.image1products.com/techdocs/HP.htm
> download the 2100 manual which will explain how to replace these parts, it is
> not very hard to replace the tray 1 parts but the tray 2 parts can be tricky
> even though it looks easy.
> See also http://www.printertechs.com/tech/mkinst/mk-2100-1.php which has links
> to instructions for replacing these parts if you don't want the whole manual.
> Tray 1 instructions are items 5 and 6 on this page.
> The two part numbers are RB2-2900-000CN (Roller) and RB2-6348-000CN (Pad). They
> are identical parts to those used in the LJ2200 and several other models and
> sometimes the part numbers change.
> If you go to
> http://www.jpcomputerstore.com/servl...et+2100+Series
> They have both of these available but you should be able to google for either
> part number and get a number of hits.
>
>
> bob <bob@ble.com> wrote:
>> Thanks everyone for the feedback.
>>
>> Since the take up roller was brought up, I have a friend
>> with an HP Laserjet 2100 who prints postcards. He feeds
>> through the auxiliary feeder and the take up roller sometimes
>> does not pickup a postcard (I think it slips). He has
>> tried to clean it and it works temporarily.
>>
>> Are there places to buy these pickup rollers for self
>> replacement?
>
> Tony
> MS MVP Printing/Imaging
>

> Tony wrote:
>>

The only problem I
>> have ever heard of with duplexing is that a few printers have
>> difficult as a result of the paper curl that can occur, this will not
>> however damage the printer.

Hi, Tony.
I'm curious about the essence of this issue, too. My "laser" printer is
an Okidata 12i. The instructions say not to feed a previously-printed
sheet through the machine. I've assumed that the reason for this is that
the already-fused toner will melt and smear on the second pass through
the fuser, and in addition, may be deposited on the pressure rollers
opposite the fuser, to then be transfered to the next sheet of paper.

Is this the case? Can you tell me about the different fuser systems that
may cause trouble like this or allow more flexible printing?

Thanks.

Richard

PS: your reply was not carried onto my machine. I don't have you
killfiled, but I do have our newsgroup spoiler killed under his various
pseudonyms -- which makes considerably-calmer participation. But I don't
understand why your post didn't make it.