UPS: "Do not connect laser printer..."

Meat Plow wrote:
On Tue, 21 Jul 2009 17:37:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

notme wrote:
What is it about laser printers that causes UPS manufacturers to recommend
they not be powered by a "stepped approximation to sine" UPS? It's a SMSP,
isn't it? What makes it special such that it needs sine-only? No such caution
re. computers, etc...
The big difference is that lasers usually have a mains powered quartz
lamp inside the fuser assembly to cook the toner onto the paper. My
guess would be that the lamp puts a huge current spike on the mains each
time it powers up, which is every minute or so. If so, that spike might
overload the UPS.

The fuser in the older HP lasers was on even waiting for a print job.
There was a thermostat on the lamp strip inside the roller to keep the
fuser roller at a constant temp.
Click to expand...
Yes, that's correct. (Fixed hundreds of them, back in the days.)

The warnings on UPS date back to
those times.
Click to expand...

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
 
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
<bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?

You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.
Click to expand...
But the end result is still a bubble of ink.
 
On Sat, 25 Jul 2009 23:07:18 +1000, Bob Larter
<bobbylarter@gmail.com>wrote:

Meat Plow wrote:
On Tue, 21 Jul 2009 17:37:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

notme wrote:
What is it about laser printers that causes UPS manufacturers to recommend
they not be powered by a "stepped approximation to sine" UPS? It's a SMSP,
isn't it? What makes it special such that it needs sine-only? No such caution
re. computers, etc...
The big difference is that lasers usually have a mains powered quartz
lamp inside the fuser assembly to cook the toner onto the paper. My
guess would be that the lamp puts a huge current spike on the mains each
time it powers up, which is every minute or so. If so, that spike might
overload the UPS.

The fuser in the older HP lasers was on even waiting for a print job.
There was a thermostat on the lamp strip inside the roller to keep the
fuser roller at a constant temp.

Yes, that's correct. (Fixed hundreds of them, back in the days.)
Click to expand...
First Laserjet printer I owned was a 4+. Snagged it from a client who
was going to dumpster it after I installed a LJ 6p. The 4 had a high
print count maybe upawards of 50k but after a good cleaning including
inside the laser assembly prism and spreader lens it worked perfect
and I've been using it for 7 years now :)
 
On Sat, 25 Jul 2009 10:10:53 -0400, Meat Plow <meat@petitmorte.net>
wrote:

On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?

You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.

But the end result is still a bubble of ink.
Click to expand...
No. The piezo heads send droplets, not bubbles.
 
The original HP inkjet printer was called a Thinkjet -- thermal inkjet.

I don't know what system HP currently uses.
 
William Sommerwerck wrote:
The original HP inkjet printer was called a Thinkjet -- thermal inkjet.
Click to expand...
I guess one should never assume that a product name is a non sequitur
invented by some marketing droid; I never thought to parse 'Thinkjet'
as you did ;)

I still bristle at names like 'Verizon' and 'Vonage', both of which
I pronounced incorrectly until I heard salesfolk using them (Verizon
like the the river Amazon or the modeling school Barbizon, with the
accent on the first syllable and Vonage with the accent on the second
syllable and a soft 'g' ala 'bon voyage'). It still amazes me to hear
some people pronouncing 'daemon' as 'daymon' and 'Debian' as
'day bee an' -- Debian is a concatenation of 'Deb and Ian'.

Michael


Michael


I don't know what system HP currently uses.
Click to expand...
 
On Sat, 25 Jul 2009 10:49:50 -0700, Archimedes' Lever
<OneBigLever@InfiniteSeries.Org>wrote:

On Sat, 25 Jul 2009 10:10:53 -0400, Meat Plow <meat@petitmorte.net
wrote:

On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?

You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.

But the end result is still a bubble of ink.

No. The piezo heads send droplets, not bubbles.
Click to expand...
So an HP head shoots drops of ink instead of bubbles. Got it.
 
Meat Plow wrote:

So an HP head shoots drops of ink instead of bubbles. Got it.
Click to expand...
They both shoot out drops of ink, but one of them
does it by by creating bubbles inside the ink, and
the other just squeezes the ink.

Shooting out bubbles would be interesting...
Bubble-gum printer, anyone?

--
Greg
 
Meat Plow wrote:
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?
You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.

But the end result is still a bubble of ink.
Click to expand...
No, a droplet.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
 
Meat Plow wrote:
On Sat, 25 Jul 2009 23:07:18 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
On Tue, 21 Jul 2009 17:37:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

notme wrote:
What is it about laser printers that causes UPS manufacturers to recommend
they not be powered by a "stepped approximation to sine" UPS? It's a SMSP,
isn't it? What makes it special such that it needs sine-only? No such caution
re. computers, etc...
The big difference is that lasers usually have a mains powered quartz
lamp inside the fuser assembly to cook the toner onto the paper. My
guess would be that the lamp puts a huge current spike on the mains each
time it powers up, which is every minute or so. If so, that spike might
overload the UPS.
The fuser in the older HP lasers was on even waiting for a print job.
There was a thermostat on the lamp strip inside the roller to keep the
fuser roller at a constant temp.
Yes, that's correct. (Fixed hundreds of them, back in the days.)

First Laserjet printer I owned was a 4+. Snagged it from a client who
was going to dumpster it after I installed a LJ 6p. The 4 had a high
print count maybe upawards of 50k but after a good cleaning including
inside the laser assembly prism and spreader lens it worked perfect
and I've been using it for 7 years now :)
Click to expand...
The older engines are by far the best. I've seen Canon SX engine
printers (eg; the HP Series 2) still going strong at half a million
prints. Dust 'em out every now & then, scrub the rollers with acetone
every couple of years, & they last forever. I heard of one unit (in a
police department) that was still going strong at 1.5 million prints.
The MX engines are pretty good too, but the SX engine is still the king.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
 
On Mon, 27 Jul 2009 23:21:49 +1000, Bob Larter <bobbylarter@gmail.com>
wrote:

Meat Plow wrote:
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?
You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.

But the end result is still a bubble of ink.

No, a droplet.
Click to expand...
More precisely... A picoliter sized droplet.
 
On Mon, 27 Jul 2009 17:39:09 -0700, Archimedes' Lever
<OneBigLever@InfiniteSeries.Org>wrote:

On Mon, 27 Jul 2009 23:21:49 +1000, Bob Larter <bobbylarter@gmail.com
wrote:

Meat Plow wrote:
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?
You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.

But the end result is still a bubble of ink.

No, a droplet.

More precisely... A picoliter sized droplet.
Click to expand...
A bubble-like droplet.
 
Meat Plow wrote:
On Mon, 27 Jul 2009 17:39:09 -0700, Archimedes' Lever
OneBigLever@InfiniteSeries.Org>wrote:

On Mon, 27 Jul 2009 23:21:49 +1000, Bob Larter <bobbylarter@gmail.com
wrote:

Meat Plow wrote:
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?
You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.
But the end result is still a bubble of ink.
No, a droplet.
More precisely... A picoliter sized droplet.

A bubble-like droplet.
Click to expand...
The bubble is what forms on the heating element, pushing the ink droplet
out of the nozzle.

--
W
. | ,. w , "Some people are alive only because
\|/ \|/ it is illegal to kill them." Perna condita delenda est
---^----^---------------------------------------------------------------
 
On Thu, 30 Jul 2009 01:12:26 +1000, Bob Larter
<bobbylarter@gmail.com>wrote:

Meat Plow wrote:
On Mon, 27 Jul 2009 17:39:09 -0700, Archimedes' Lever
OneBigLever@InfiniteSeries.Org>wrote:

On Mon, 27 Jul 2009 23:21:49 +1000, Bob Larter <bobbylarter@gmail.com
wrote:

Meat Plow wrote:
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?
You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.
But the end result is still a bubble of ink.
No, a droplet.
More precisely... A picoliter sized droplet.

A bubble-like droplet.

The bubble is what forms on the heating element, pushing the ink droplet
out of the nozzle.
Click to expand...
Well the result is the same. A jet of ink whether it is ousted by a
buzzing piezo or heating device. I don't think the two are as
dissimilar as night and day on a molecular level.
 
On Thu, 30 Jul 2009 01:12:26 +1000, Bob Larter <bobbylarter@gmail.com>
wrote:

Meat Plow wrote:
On Mon, 27 Jul 2009 17:39:09 -0700, Archimedes' Lever
OneBigLever@InfiniteSeries.Org>wrote:

On Mon, 27 Jul 2009 23:21:49 +1000, Bob Larter <bobbylarter@gmail.com
wrote:

Meat Plow wrote:
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?
You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.
But the end result is still a bubble of ink.
No, a droplet.
More precisely... A picoliter sized droplet.

A bubble-like droplet.

The bubble is what forms on the heating element, pushing the ink droplet
out of the nozzle.
Click to expand...

IN a bubble jet.

IN an InkJet are you sure the same mechanisms are utilized?
 
IN a bubble jet.
IN an InkJet are you sure the same mechanisms are utilized?
Click to expand...
The original inkjet printer -- which dates back more than 40 years --
mechanically squirted a stream of droplets at the paper, deflecting the
unused droplets electrostatically for recycling. The thermal inkjet was
based on the discovery that heating the end of a tube containing ink would
boil the ink and cause a drop to squirt out. This "on-demand" system made
cheap inkjet printers possible.
 
On Thu, 30 Jul 2009 04:59:49 -0700, "William Sommerwerck"
<grizzledgeezer@comcast.net> wrote:

IN a bubble jet.
IN an InkJet are you sure the same mechanisms are utilized?

The original inkjet printer -- which dates back more than 40 years --
mechanically squirted a stream of droplets at the paper, deflecting the
unused droplets electrostatically for recycling. The thermal inkjet was
based on the discovery that heating the end of a tube containing ink would
boil the ink and cause a drop to squirt out. This "on-demand" system made
cheap inkjet printers possible.
Click to expand...
I remember seeing a photograph of the electrostatically steered print
head and read the technical article. That was a long time ago, I
think that IBM built it, or that may be wishful thinking on my part.
 
On Thu, 30 Jul 2009 04:59:49 -0700, "William Sommerwerck"
<grizzledgeezer@comcast.net> wrote:

IN a bubble jet.
IN an InkJet are you sure the same mechanisms are utilized?

The original inkjet printer -- which dates back more than 40 years --
mechanically squirted a stream of droplets at the paper, deflecting the
unused droplets electrostatically for recycling. The thermal inkjet was
based on the discovery that heating the end of a tube containing ink would
boil the ink and cause a drop to squirt out. This "on-demand" system made
cheap inkjet printers possible.

The term 'bubble jet' however, is no more than a mere copyrighted
Click to expand...
process name tag, just like "Teflon' is or "Kotex".
 
On Wed, 29 Jul 2009 13:19:36 -0400, Meat Plow <meat@petitmorte.net>
wrote:

On Thu, 30 Jul 2009 01:12:26 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
On Mon, 27 Jul 2009 17:39:09 -0700, Archimedes' Lever
OneBigLever@InfiniteSeries.Org>wrote:

On Mon, 27 Jul 2009 23:21:49 +1000, Bob Larter <bobbylarter@gmail.com
wrote:

Meat Plow wrote:
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?
You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.
But the end result is still a bubble of ink.
No, a droplet.
More precisely... A picoliter sized droplet.

A bubble-like droplet.

The bubble is what forms on the heating element, pushing the ink droplet
out of the nozzle.

Well the result is the same. A jet of ink whether it is ousted by a
buzzing piezo or heating device. I don't think the two are as
dissimilar as night and day on a molecular level.
Click to expand...

However, a DROPLET of ink is what hits the paper, not a "bubble of ink"
as was stated.
 
On Sat, 01 Aug 2009 13:15:37 -0700, Archimedes' Lever
<OneBigLever@InfiniteSeries.Org>wrote:

On Wed, 29 Jul 2009 13:19:36 -0400, Meat Plow <meat@petitmorte.net
wrote:

On Thu, 30 Jul 2009 01:12:26 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
On Mon, 27 Jul 2009 17:39:09 -0700, Archimedes' Lever
OneBigLever@InfiniteSeries.Org>wrote:

On Mon, 27 Jul 2009 23:21:49 +1000, Bob Larter <bobbylarter@gmail.com
wrote:

Meat Plow wrote:
On Sat, 25 Jul 2009 23:01:46 +1000, Bob Larter
bobbylarter@gmail.com>wrote:

Meat Plow wrote:
What about not being a bubble jet printer? Aren't all HP print
cartridges equipped with a bubble jet print head?
You're confusing BubbleJets (Canon) with InkJets (HP/Epson). The former
use a heating element per pixel, the latter use a piezo element.
But the end result is still a bubble of ink.
No, a droplet.
More precisely... A picoliter sized droplet.

A bubble-like droplet.

The bubble is what forms on the heating element, pushing the ink droplet
out of the nozzle.

Well the result is the same. A jet of ink whether it is ousted by a
buzzing piezo or heating device. I don't think the two are as
dissimilar as night and day on a molecular level.


However, a DROPLET of ink is what hits the paper, not a "bubble of ink"
as was stated.
Click to expand...
Bubble Shmubble I want a fucking drop of ink on my paper not a
bubble..
 
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