Konica C8000 review and Please HELP!!!!

[jpnunes]

A lot said about the C8000, but I can tell you something. I am running 2 KM C8000 with CREO Rips for a year now. One has 615K clicks and the other has 800K. Both of them have great color quality. The consistency in color is very good as long as you know what you're doing. Keep it calibrated in a regular basis and the color is always there. But when it comes to productivity. My friends this machines have more problems then an old car. The Cleaning units on one of this machine stop working every two weeks and a lot of marks come on the printing, jamming on light stocks happens way to often even when we are using some of the best papers and we have tried them all. I don't know if the problems are not solved because of the lack of knowledge of the engineers in Ireland or the machines just cannot handle it at all. If someone has experienced problems like this please give us a shout a let me know how have they been handled by your techs.

[rsands]

Ah your the other C8000's in Ireland

Techs are close to terrible when it comes to trouble shooting - i dont blame them as such, its just the sheer lack of the machines in Ireland and when they aren't working them every day knowledge gets limited. We got the service manual and now fix most problems ourselves. If you have a full understanding of the machine in the service manual, most problems can be self diagnosed.

thin paper - it is crucial each of the units is 100% aligned...otherwise sheets get caught and jam. What type of marks are you getting? What weight of stock do you mostly run?

[jpnunes]

Hey, thanks for the reply, I do think the same, that the lack of C8000's in Ireland is part of the problem... The marks are like stricks made from the 4 color and they are coming from the vertical transfer belt, that I do know for sure. Why does it happen so often it's what I would like to understand. We run from 100gsm bond paper to 350 matt and gloss coated stocks. Problems with the jamming more often happen on the light stocks, 130/150/170, often in the 1st fusing unit witch seems as if the rolls skew on the paper and don't pull the paper forward as the print comes from the edge of the sheet instead of centering it and imprints the 4CMYK lines in the end of this sheet as if i was running a bigger size sheet then the one i had specified. Probably hard to understand all this. I could upload an image of a sheet and send you a link so you'll know what I mean. Will do that later today.

[kingpd@businessprints.net]

glad you aren't beating your technicians up and are understanding. many techs are underpaid and overworked. the sheer number of makes and models that a tech may have to work on can be alarming. add to that all the qwarks, manuals, and tech bulletins and you're looking at tens' of thousands of pages of information.

[rsands]

If you can upload an image would be great and see if can help.

[KopyBoss]

Maybe we were lucky or just have a good tech. Last month we ran 375,000 imp all 12 x18 and only had 1 service call to replace upper fuser roll. We are averaging around 250k imp month and 1-3 service calls. Not sure what to tell you maybe it's your techs not fixing the machine correctly. Our machine holds the density with no problems we run a lot of solids and photos We use Profile Maker Pro to profile our paper in the 8000 works very well. If they cannot fix your machine I'm sure you can get out of your contract. I wouldn't pay them for a machine that is not running.

[Toner4Brains]

jpnunes-
The CMYK line on the edge of the sheet is likely a timing issue which may be the root of your jamming problem as well. There is a densitometer looking at the intermediate transfer belt, and in between image frames the engine prints a full width control bar in the cross direction of the belt -there is a gap in between sheets in the paper path and the control bar is placed inside that non-image area on the belt and should never end up on paper. The densitometer uses this to measure DMax at first transfer and holds it within tolerance. If timing is off, you'll see this control bar printed on the actual sheet and it is 4 very thin lines of each color. If this is the case, it would mean the rollers actually aren't timed with the sheet cadence either and could be the cause of your paper jams.

Let me know if it sounds like what you're referring to. The adjustment for it is called "restart timing", but it is in the service mode menu.

[jpnunes]

Hi, that what happens indeed. Though it only happens with some paper types and brands. Never happens with any stock over 170gsm. This week I have a whole new problem. Code C2721. The tech has replaced a "dis-charger" This code only comes up if running heavy stock over 220gsm. Now the code came back and the techs have no idea why. I have had a look at the connections myself following the manual but everything seems fine. Any help on this would be gratefully appreciated. You run 375K with one call. Friend I cant run 35K without a call. I have quit smoking and i think this two machines will drive me to drink instead! LOL! Please help...

[zprinter]

Can anyone tell me what they are paying for full size clicks on the 8000?

[happywing]

I am shopping. For the 8000, KM quoted me at:
color $0.0450
B&W $0.0085