Canon C1 4 color dots across page

[Penvy]

I am betting on the high prim out spike.
The svc mode1 shows 999 prim and 464 grid
I cked for warping on pre and nada
I cked for any arc nada
funny though, is almost near the same dots on the old drum

The Dve units have not even gone 80K
500k is what their said to go.

What I do know is that there was nothing to cause a ding
sliding in the caronas very slow and keeping them straight.

I did get that 2" band across from the Y a few times where the print was rough
But that only happened 2x on the new drum


This Mach did mostly full 11X17 bleeds duplex booklet
Business cards.

for these problems to come up that early is really bad.


So what?

[worthy67]

[Penvy]

Thanks for the shoulder,
I have to get this running anyway,

The Dev units are next
All for a mach that has less than 80K

[SCREWTAPE]

Developer never lasts no more than 70 to 80K. But then again customers never print 5% ratio.

[Penvy]

Exactly, 5%
I just cant get over how hard Canon pushed this POS on customers
AND then try to train tech's to fix what pans out to a re-design of the entire system starting with the DEV units being just too small.

Dont get me wrong, the 1 drum idea is what they were looking at for over all color match and saturation
The "new" toner is a retro of the old Phaser wax bars & 1 drum that has wonderful deep color for a tabletop digital 4 color. many moons ago.

The image was really great but fragile and heat sensitive.

remember those?
well the poly/wax 5.5 micron 'New" toner in the basic CYMK is standard in a lot of the newer copiers.
The poly adds stability and can be micro pelitized to that 5.5 m for a lower toner heat setting and give the finish sheen to the semi/or full coated paper to look as it was photo
quality and match pantone very well, even in the green/blue area where most copiers can get into a limited spectrum range.

Using the Fiery 1 software has now generalized the color match within most servers and now can give designers a more exact color repro.
that ever before

But what the F do I know!

[teckat]

This, "10-22-38 ASTORIA", humble legend marks the time and place of an auspicious event. It is the text of the first xerographic image ever fashioned. It was created in a makeshift laboratory in Queens, NY. by a patent attorney named Chester Carlson, who believed that the world was ready for an easier and less costly way to make copies. Carlson was proved right only after a discouraging ten-year search for a company that would develop his invention into a useful product. It was the Haloid Company, a small photo-paper maker in Rochester, N.Y, which took on the challenge and the promise of xerography and thus became, in a breathtakingly short time, the giant multinational company now known to the world as Xerox Corporation. Xerography, the technology which started the office copying revolution, was born unheralded on October 22, 1938, the inspiration of a single man working in his spare time. When he died in 1968 at the age of 62, Chester Carlson was a wealthy and honored man, Xerox annual revenues were approaching the billion dollar mark, and the whole world was making copies at the push of a button. The astounding success of xerography is all the more remarkable because it was given little hope of surviving its infancy. For years, it seemed to be an invention nobody wanted. To know why it eventually prevailed is to understand the mind of Chester Carlson. For xerography, and the man who invented it, were both the products of hardship and travail.
"I had my job," he recalled, "but I didn't think I was getting ahead very fast. I was just living from hand to mouth, and I had just gotten married. It was kind of a struggle, so I thought the possibility of making an invention might kill two birds with one stone: It would be a chance to do the world some good and also a chance to do myself some good." As he worked at his job, Carlson noted that there never seemed to be enough carbon copies of patent specifications, and there seemed to be no quick or practical way of getting more. The choices were limited to sending for expensive photo copies, or having the documents retyped and then reread for errors. A thought occurred to him: Offices might benefit from a device that would accept a document and make copies of it in seconds. For many months Carlson spent his evenings at the New York Public Library reading all he could about imaging processes. He decided immediately not to research in the area of conventional photography, where light is an agent for chemical change, because that phenomenon was already being exhaustively explored in research labs of large corporations.
Obeying the inventor’s instinct to travel the uncharted course, Carlson turned to the little-known field of photo-conductivity, specifically the findings of Hungarian physicist Paul Selenyi, who was experimenting with electrostatic images. He learned that when light strikes a photo-conductive material, the electrical conductivity of that material is increased.
Soon, though, he began some rudimentary experiments, beginning first -- to his wife's aggravation -- in the kitchen of his apartment in Jackson Heights, Queens. It was here that Carlson unearthed the fundamental principles of what he called electro-photography --later to be named xerography -- and defined them in a patent application filed in October of 1937. "I knew," he said, "that I had a very big idea by the tail, but could I tame it?"
So he set out to reduce his theory to practice. Frustrated by a lack of time, and suffering from painful attacks of arthritis, Carlson decided to dip into his meager resources to pursue his research. He set up a small lab in nearby Astoria and hired an unemployed young physicist, a German refugee named Otto Kornei, to help with the lab work.
It was here, in a rented second-floor room above a bar, where xerography was invented. This is Carlson's account of that moment: "I went to the lab that day and Otto had a freshly-prepared sulfur coating on a zinc plate. We tried to see what we could do toward making a visible image.
Otto took a glass microscope slide and printed on it in India ink the notation '10-22-38 ASTORIA.'"We pulled down the shade to make the room as dark as possible, then he rubbed the sulfur surface vigorously with a handkerchief to apply an electrostatic charge, laid the slide on the surface and placed the combination under a bright incandescent lamp for a few seconds. The slide was then removed and lycopodium powder was sprinkled on the sulfur surface. By gently blowing on the surface, all the loose powder was removed and there was left on the surface a near-perfect duplicate in powder of the notation which had been printed on the glass slide.
Fearful that others might be blazing the same trail as he -- which is not an uncommon occurrence in the history of scientific discovery -- Carlson carefully patented his ideas as he learned more about this new technology. His fear was unfounded. Carlson was quite alone in his work, and in his belief that xerography was of practical value to anyone. He pounded the pavement for years in a fruitless search for a company that would develop his invention into a useful product.
From 1939 to 1944, he was turned down by more than twenty companies. Even the National Inventors Council dismissed his work. "Some were indifferent," he recalled, "several expressed mild interest, and one or two were antagonistic. How difficult it was to convince anyone that my tiny plates and rough image held the key to a tremendous new industry. "The years went by without a serious nibble.. .I became discouraged and several times decided to drop the idea completely. But each time I returned to try again. I was thoroughly convinced that the invention was too promising to be dormant."
Finally, in 1944, Battelle Memorial Institute, a non-profit research organization, became interested, signed a royalty-sharing contract with Carlson, and began to develop the process. And in 1947, Battelle entered into an agreement with a small photo-paper company called Haloid (later to be known as Xerox), giving Haloid the right to develop a xerographic machine.
It was not until 1959, twenty-one years after Carlson invented xerography, that the first convenient office copier using xerography was unveiled. The 914 copier could make copies quickly at the touch of a button on plain paper. It was a phenomenal success. Today, xerography is a foundation stone of a gigantic worldwide copying industry, including Xerox and other corporations which make and market copiers and duplicators producing billions and billions of copies a year. And to Carlson, who had endured and struggled for so long, came fame, wealth and honor, all of which he accepted with a grace and modesty much in keeping with his shy and quiet personality.

[SCREWTAPE]

It will soon past.

Hang in there buddy.

[Penvy]

IF you watch MAD MEN the series.

There is one of these on the set in an "office"
that the Tech bitched at the operator in one scene about how delicate and complex this was.

I think I remember these as very expensive and very dirty and sometimes would catch fire if there was a jam on the "heater" or carona
That would pooc everything inside.
OK Now I am showing my age.............. BFD

If I could I would just move this C1 outside, get my shot gun and charge local Canon techs to shoot it
Then a few sticks of dynamite for the finish, the gas to burn it.

Then Send whats left back to Canon USA on a Pallet for Xmas
We can only Dream!

When we were in HS for fund raising
we would get a junk car and charge $1 a whack with a sledge hammer in the school Parking lot

[pga]

u may need check the drum surface by 20-30'c angels. u may view the pit.

[teckat]

u may need check the drum surface by 20-30'c angels. u may view the pit.

u can't see an internal ARC > too small
u can use dusting power to view an outside nick/pit/or scratch

[Penvy]

The one you can see real good
Did NOT ding it, and just at odds

Is there a mod to ground something?
Then there are very small ones
How the hell can this happen

[teckat]

The one you can see real good
Did NOT ding it, and just at odds

Is there a mod to ground something?
Then there are very small ones
How the hell can this happen

Got in touch with Canon Engineering pal/ he said there is a updated
Drum Assembly it comes with the adjusted Pre-Trans guide/ limits the rising up



HVT1/ or Coronas >>> Machine end blocks can Arc

Primary Corona/Grid unit Output Voltage too High= HVT1

The primary charging bias is created to charge the photosensitive drum surface with even minus electric
potential as a preparation for image formation.
The primary charging bias provides two types of biases; primary charging DC bias and grid DC bias.
These biases are created in the high voltage PCB 1 based on an instruction by the DC controller, and applied to
the primary charging wire and grid line at a specified timing.
The grid bias value is determined based on the result of electric potential control.


Also inc.>
Pre-Transfer Charging Bias Control= HVT1

[Penvy]

When the drum reset is installed and the Inst-4 for the Dev units(takes a long time)
The Prim is 999 and grid is 464

The dots are 3" from top of landscape
or the non operator side of the drum.
the pre transf is not moving much and the end pin Phillips screw that goes into the frame
How would you adj that?

I see what your talking about
My best guess it what this was installed there had to be an arc

This is what pisses me off on this
It had to warm up and cycle befor you can see this
Yes I know the Svc 1& 2 mode,
BUT when you reset the Drum
That should go protect the HV until it gets a chance to run

wheres that dynamite?

Bird shot or Deer slugs? hmmmmm

[Canuck]

Do they look like this. The dots are created by pit marks on the Drum caused by contamination in the Developer Units. Or a bad drum. But you change the drum right.

Your dots are MYCK? Just curious

[teckat]

one pin hole / or one scratch - on Drum will create four single color MYCK dots on this model