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Black formulation for inkjet

Black formulation for inkjet - Chemistry Forum

Black formulation for inkjet - Chemistry Forum. Discuss chemical reactions, chemistry.


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  #1  
Old 09-06-2003, 01:08 AM
Yianni
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Default Black formulation for inkjet



I need a "draft" formula for carbon black pigmented ink for inkjet thermal
printers. I don't want high quality formulation, but I need exact
percentages of ingredients.
E.g. 10% predispersed black, 10% ethylene glycol, 1% specific resin, ...,
etc. A formulation that would DO work in a specific commercial drop on
demand printer.

--

Yianni
[Only registered users see links. ] (αφαιρέστε τον αριθμό εννιά από το email)

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  #2  
Old 09-07-2003, 01:23 AM
Yianni
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Default Black formulation for inkjet

Unfortunately, patents aren't good sources for ink composition. Just now, I
was searching for patents...
Patents either keep some aspects seecret, either are much complicated (some
are for future use), or begin from A to go to Z, and in the real life usualy
we go from W to Z. I have downloaded more than 50 patents!

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Yianni
[Only registered users see links. ] (remove number nine to reply)

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"Marvin Margoshes" <[Only registered users see links. ]> wrote in message
news:[Only registered users see links. ]...
thermal
....,
[Only registered users see links. ].

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  #3  
Old 09-07-2003, 06:51 AM
Repeating Decimal
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Default Black formulation for inkjet

in article 1062897750.767583@athprx02, Yianni at [Only registered users see links. ] wrote on
9/6/03 6:23 PM:


Patent claims are automatically invalid if the patent does not tell a person
skilled in the art how to make the invention work.

In particular, I remember a paper by Drexhage on how to make a nickel
complex Q-switching dye in the IEEE Journal of Quantum Electronics. The
paper allowed us to get a small amount of dye that enabled passive
Q-switching of neodymium lasers.

When the patent was issued, it contained much more detail on how to prepare
the dye. It was much cheaper to buy the dye when it became commercially
available rather than to get it by synthesis.

Bill

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  #4  
Old 09-07-2003, 10:28 AM
Larry Smith
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Default Black formulation for inkjet

No patent is 'automatically invalid' once it has issued. There are a lot of
junk patents out there. Some of them are based on prior art, some just
don't work
and never did, etc.

One company I know of lost its patent case in the USA, and then not longer
sued another company in the United Kingdom on the same base patent which
had not been 'automatically invalidated'. It lost, and had to pay for costs
and damages.

Not too much longer, this company sued another company on the same patent
basis, this time in Canada, and WON a judgement and was granted an
injunction. This finally fell on appeal.

Lots of patents don't tell the whole story, IF there is in fact a story to
tell. A Ph.D. for a major oil company (whom I knew) was a prolific
patenter. Much of his stuff didn't work and had never worked. Unless
something unusual cropped up, however, his patents were not worth the money
of a challenge.
his stuff didn't work and had no

"Repeating Decimal" <[Only registered users see links. ]> wrote in message
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person


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  #5  
Old 09-07-2003, 06:11 PM
Gregg
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Default Black formulation for inkjet

It's easy to get a patent granted, but the acid test is litigation.
A lot of people/ companies file for patents to get bragging rights, pad
resumes or to improve the company image. (stock analyst may just look at the
number of patents granted to a company as an indication of their R&D
effectiveness)
If no one infringes on a poorly written patent, it probably didn't have any
commercial value (so there was no need for a patent).
If you know that someone is infringing on your patent and you don't
litigate - you'll loose your patent rights to that product or process.
If it's a valuable patent, many companies will try to thwart the patent
searches by using obscure titles and some pharmaceutical companies go so far
as to set up separate corporations to file the patents so the competition
doesn't find out what their doing.
Gregg

"Larry Smith" <[Only registered users see links. ]> wrote in message
news:[Only registered users see links. ]...
of
costs
money


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  #6  
Old 09-08-2003, 01:21 AM
Yianni
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Default Black formulation for inkjet

I can't judge patents, because my chemist knowledge is limited. But, I
accidentaly have seen two different patents from the same company to be
almost identical...

On the same subject, any ink formulation?

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Yianni
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  #7  
Old 09-08-2003, 04:18 AM
John Spevacek
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Default Black formulation for inkjet

"Gregg" <[Only registered users see links. ]> wrote in message news:<BxK6b.37831$[Only registered users see links. ].adelphia.n et>...

I'm not sure that litigation is the acid test. Suits of this nature
are handled before a jury "of our peers", which should be to my
thinking, other scientists or engineers or maybe patent attorneys
since they understand how these things work. Unfortunately, you get a
panel of people pulled off the street with some degree of randomness,
most of who hated science and math when they were in school and
probably resent the fact that you are trying to get them to think
about such stuff again.

I know of a suit where the base arguement was about whether a cone is
different from a hemisphere. The plaintiff, who thought there was no
difference and hence the suit, had all kinds of highly respected
expert witnesses with statistical analyses (what's statistical about a
determined system???) to show that there was no difference. After a
couple of days looking at the jury, the defendent decided to settle.

Litigation is an acid bath eating lots of flesh from both parties, not
an acid test of a patent. Isn't there some lawyers curse like "May you
contest a suit in which you know you are right!"?

John
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  #8  
Old 09-08-2003, 05:01 AM
Marvin Margoshes
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Default Black formulation for inkjet


"Yianni" <[Only registered users see links. ]> wrote in message
news:1062985077.992615@athprx02...
A single patent application can result in two patents, with different
claims.


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  #9  
Old 09-12-2003, 01:39 AM
Gregg
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Default Black formulation for inkjet


"John Spevacek" <[Only registered users see links. ]> wrote in message
news:38c9b55b.0309072018.7a11bac1@posting.google.c om...
news:<BxK6b.37831$[Only registered users see links. ].adelphia.n et>...

The Weedeater case was heard before a judge (from what I remember).
Several companies blatantly violated the weedeater patent and the it was
thrown out as being too obvious (like they were trying to patent a square
door knob).
It took a couple of years of diligent development to come up with something
that was obvious to everyone (except the folks who make lawn equipment).
On the flip side - I know of two billion dollar companies that were sued for
patent infringement by a small (<$20M) manufacturer.
The infringement case held up - although the process was slightly different,
it was ruled as an obvious extension of the original patent even though the
slightly different process was not specifically claimed.

Your right - so much for acid tests- sometimes they work and
sometimes.............(I'd write more but I have to go and wack some weeds
with my Toro weed-eater)
Gregg


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  #10  
Old 09-12-2003, 05:44 AM
hanson
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Default Patents, disputes and the law(yers)

was Re: Black formulation for inkjet
"Gregg" <[Only registered users see links. ]> wrote in message
news:it98b.327$[Only registered users see links. ].adelphia.net. ..
[hanson]
........ like in L.A, where they are forced to serve under the threat of
a $ 1500 fine if they don't want to do "jury duty", and for which they
get paid $5/day, less then it costs to feed a convicted criminal in jail.
[hanson]
AHAHAHAH.......ahahaha........then there was the case where the defendant
sold a shipload full of 50 ft long compressed-air hoses, in which the longest
one turned out to be 41 ft, per weight&measure inspectors. The defendant
claimed that this was an illusionary mis-measurement, a mistake by the govt.
That all the hoses were in reality at least 50 ft long, due to atomic vibes
according the theory of special relativity according to Einstein. When the
judge raised an eyebrow, the atty. quickly offered to educate the judge &
jury on these "trivial" matters. The beautiful, hi-yellow judge (38-26-34)
didn't want to appear to be stupid and asked how long that would take.
Without batting an eyelash the def.atty said: "Seven days, your honor.
The first day we acquaint you with....etc......the fifth day...". The judge
interrupted and roared at the DA: "Have you guys nothing better to do
then to burden the court with crock like that! ......."And you, counsel,
instruct your client to affix a white 2x3" label with large letters onto each
package, stating *minimum 40 ft long*". ----- Gavel down. Case closed.
So much for lawyers, justice, Einstein and common sense.

Wasn't it Shakespeare who said ca. 1678 that all lawyers should be murdered?
The problem apparently is not new.
hanson

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