[Misc] 5 Million Printable Sheets of paper, really?

[monarke4]

I was doing a little reading and found this article which discusses Kyocera's Amorphous Silicon (a-Si) Photoconductor.

Five Million Printable Sheets of paper?

a-Si Photoreceptor | a-Si Photoreceptor Drums | Printing Devices | Products | Kyocera

[blackcat4866]

Re: 5 Million Printable Sheets of paper, really?

They are capable of 5M LTR images, yes. Will it get 5M images? That will depend on several things:
How careful is your enduser removing jams?
How careful is your tech when doing maintenance?
Are your machines getting prescribed maintenance at the recommended intervals?
Does your enduser wear a ring on his/her right hand?
Will your enduser remove staples from his/her originals over the bypass tray?

Sure, occasionally a drum will survive 5M before something bad happens to it.
Have you looked at the replacement cost of that ASi drum? $3K
=^..^=

[monarke4]

Re: 5 Million Printable Sheets of paper, really?

They are capable of 5M LTR images, yes. Will it get 5M images? That will depend on several things:
How careful is your enduser removing jams?
How careful is your tech when doing maintenance?
Are your machines getting prescribed maintenance at the recommended intervals?
Does your enduser wear a ring on his/her right hand?
Will your enduser remove staples from his/her originals over the bypass tray?

Sure, occasionally a drum will survive 5M before something bad happens to it.
Have you looked at the replacement cost of that ASi drum? $3K
=^..^=

I suppose then that the KM-2560 I just bought doesn't have an ASi drum.
At first glance it seems to have the same glassy look of Selenium Arsenic, but I though this just can't be.

A price tag of 3K is probably what the cost of the large photo-receptor belt in the Xerox 8200 Duplicator would cost if you could find one.

[blackcat4866]

Re: 5 Million Printable Sheets of paper, really?

---

Actually your Stratos does have an ASi drum, but it's about 1 1/4" diameter, not the 5" diameter drum that you're reading about in the literature for the KM-6030, KM-8030. In a high volume situation you could get 300K from your Stratos drum. In your situation the primary charge will start arcing before that, pitting the drum surface.

Are you following? The small drum must rotate through over 4 revolutions to image a single LTR page.
=^..^=

[monarke4]

Re: 5 Million Printable Sheets of paper, really?

Are you following? The small drum must rotate through over 4 revolutions to image a single LTR page.
=^..^=

That makes perfect sense to me.

[patrickjlc]

Re: 5 Million Printable Sheets of paper, really?

---

Actually your Stratos does have an ASi drum, but it's about 1 1/4" diameter, not the 5" diameter drum that you're reading about in the literature for the KM-6030, KM-8030. In a high volume situation you could get 300K from your Stratos drum. In your situation the primary charge will start arcing before that, pitting the drum surface.

Are you following? The small drum must rotate through over 4 revolutions to image a single LTR page.
=^..^=

They should figure a way to prevent arcing on the main charge. Kind of defeats the purpose of a high capacity drum (300k copies as example) i get maybe 100-130k before I have to start changing coronas.....

The Taskalfa 520i/420i seem to last longer than the km 2560/3560 or 4035/5035


Sent from my SM-G930V using Tapatalk

[Santander]

Re: 5 Million Printable Sheets of paper, really?

I was doing a little reading and found this article which discusses Kyocera's Amorphous Silicon (a-Si) Photoconductor.

Five Million Printable Sheets of paper?

a-Si Photoreceptor | a-Si Photoreceptor Drums | Printing Devices | Products | Kyocera

Very plausible! Retiring tomorrow a 6030 [a-SI drum] with 3.8 million on the counter and the copies are nearly still as good as the day it was installed many, many moons ago. Replacing that drum would be $3K, replacing a 2560 drum only a miniscule fraction of that cost. If the unit is properly maintained they can go the distance.

[Phil B.]

Re: 5 Million Printable Sheets of paper, really?

do these drums need polishing like the Ricoh ASi? haven't worked on this unit.
Another thing is those 'yield ' stats are ASSuming: Maintenance done when scheduled..cleanliness..paper type/weight... care when clearing jams..environment!

[zoraldinho]

Re: 5 Million Printable Sheets of paper, really?

Canon NP 6085 drum was able to produce 5 000 000 prints twenty years ago, but it needed to polish every 500 000 prints.

[Santander]

Re: 5 Million Printable Sheets of paper, really?

do these drums need polishing like the Ricoh ASi? haven't worked on this unit.
Another thing is those 'yield ' stats are ASSuming: Maintenance done when scheduled..cleanliness..paper type/weight... care when clearing jams..environment!

Never had to polish one of these from Kyo. Cleanliness? Paper? The 6030 that was retired today at 3.8 mil was in a jail that is not the cleanest of environments and they used the cheapest paper they could find, neither caused a problem. Care clearing a jam - only if the user has a boulder of a diamond on their left hand and "chips/scratches" the drum. It would be nice if Kyo used the aSi drums in more of their models, but then they would not sell as many PM Kits!

[blackcat4866]

Re: 5 Million Printable Sheets of paper, really?

The toner has a polishing compound in it. All machines with an ASi drum have a Drum Refresh function. On monochrome devices, a ledger piece of paper is fed from the bypass, in under the drum and stopped. The machine writes some black image onto the drum, develops it, then the drum rotates against the stalled paper, making a really annoying sound. Periodically the paper advances an inch at a time to move to a fresh area of paper. When the process is finished you'll see that the paper has gray bands at ~1" intervals down the page where it was used to scrub toner into the drum surface. They started doing it on the KM-2550, FalconI, FalconII, FalconIII, and HarrierI and HarrierII.

The customer usually gives you a weird look. "Why is my machine making that strange rubbing sound? What have you done to it?"

Color devices with ASi drums, like the Voyager, VoyagerE, Saturn, and Alphard series just lay down a layer of toner on the drum, and use the drum cleaning blade to scrub it. Paper never makes contact with the drums on these color devices.
=^..^=