[ALUG] Colour Laserjet Printe?

[Chris G]

On Fri, Mar 20, 2009 at 07:45:28PM -0000, Ted Harding wrote:
> On 20-Mar-09 18:51:23, Steve Fosdick wrote:
> > On Fri, 2009-03-20 at 18:16 +0000, Ted.Harding at manchester.ac.uk wrote:
> > 
> >> ... Also, the best I can find
> >> out about the duplex is that it is "manual" -- I can't find
> >> out whether that means "manual setting on control panel" or
> >> whether it means that you have to manually reverse and turn
> >> over the sheets of paper, after printing the odd page numbers,
> >> in order to print the evens! (Since that is precisely what I
> >> do right now, it would not be an advance).
> > 
> > Knowing what salesmen write my guess is it would be the latter.
> > 
> > At this point you'd be wondering what the difference is between
> > a simplex printer and "manual duplex" one is.  Perhaps none at
> > all but it should mean the manufacturer has tested that when you
> > feed the pages that have been printed on the first side back in
> > to get printed on the reverse side they don't jam.
> 
> Nicely put ... !
> Which means that the one I'm using at the moment (B&W HP LJ 1300,
> basically a very decent printer) is a "simplex printer" and not
> "manual duplex" in that sense -- though, more prcisely, jamming
> is rare; what happens is that if the sheets are put back in for
> the other side, you are likely to get 2 pulled through at once,
> which spoils the effect, as it were ...
> 
> I think this has something to do with static on the sheets, since
> leaving them lying loose for an hour or so alleviates it (without
> eliminating it).
> 
> The real work-round is to print the side 1 series, reverse the
> order and turn upside down, then empty the paper tray, place
> top sheet in the empty tray, initiate printing of the evens,
> and manually feed the sheets one by one into the paper tray once
> the previous sheet is pulled through.
> 
> Which possibly makes it a "manual duplex printer", in much the
> same sense as a dustpan & brush constitute a "manual vaccuum
> cleaner".
> 
Exactly my take on "manual duplex" too.  It simply means you do it
yourself with, possibly, some help from the printer manual.

I spent some time choosing my current printers (both HP) to make sure
I got 'real' duplex printing.  What I have is a mono laser printer
with duplex (an HP1320) and a colour inkjet with duplex (an HP7310).

What was actually a big surprise is that the HP7310 can do double
sided *copying*, it actually turns the sheets you're copying over and
copies the other side!  I only discovered this when it appeared to
'eat' a sheet I was copying and wouldn't give it back, until I copied
the second side.

-- 
Chris Green