mpc 4500 black line

[neocozhu]

mpc4500 dirty in the laser unit make the copy a many back line（only black will ，color will not） ，i find one of the glass （a little square glass）dirty
i clean it ,the copy it fine again 。but it very easy dirty again，so i dont konw why？？？
i am not using the original toner，i just add the toner in the bottle。（350g 140 chinese yuan about2.3 usd ）
but i see the laser unit cover is no problem at all ，so i never konw why the little square so easy dirty（every time a black line in the middle of the glass） OMG！

[rthonpm]

Re: mpc 4500 black line

Non-OEM toner is never a good thing to try, especially in a colour machine. The savings you may think you're getting will end up being used in your drums, developer, and fuser being used at a much higher rate, not to mention the copy and print quality issues like you're having.

[rsyarcia]

Re: mpc 4500 black line

Non-OEM toner is never a good thing to try, especially in a colour machine. The savings you may think you're getting will end up being used in your drums, developer, and fuser being used at a much higher rate, not to mention the copy and print quality issues like you're having.

agree! one of our client used this kind of toner then end up replacing the dev't unit and fusing rollers.

[gaudin]

Re: mpc 4500 black line

maybe a seal on development unit is defective...use oem toner and a new development unit

[neocozhu]

Re: mpc 4500 black line

Non-OEM toner is never a good thing to try, especially in a colour machine. The savings you may think you're getting will end up being used in your drums, developer, and fuser being used at a much higher rate, not to mention the copy and print quality issues like you're having.

thanks for your suggestion!

[neocozhu]

Re: mpc 4500 black line

agree! one of our client used this kind of toner then end up replacing the dev't unit and fusing rollers.

thanks for you suggestion !

[neocozhu]

Re: mpc 4500 black line

maybe a seal on development unit is defective...use oem toner and a new development unit

thanks for your suggestion !

[Venom]

Re: mpc 4500 black line

Dirty laser causes white lines, not black lines.

[neocozhu]

Re: mpc 4500 black line

Dirty laser causes white lines, not black lines.

why i clean the glass ,the copy fine again. is it the problem of transfer belt?

[Iowatech]

Re: mpc 4500 black line

Well, where the laser hits the drum, that's where the printed image occurs, so if the laser is blocked by toner on the glass that will result in lack of printed image.
Still, you said that is a little glass. If it is about two centimeters square or smaller, that could be the laser synch sensor lens. While I've never seen this before, I suppose if the laser synch sensor lens was dirty that might cause the laser to fire somewhat erratically, causing black lines. The next time you have the laser unit apart, you might want to check for a leak in the laser unit housing near there that lets the toner in, and cover the leak with electrical tape or something.

[neocozhu]

Re: mpc 4500 black line

Well, where the laser hits the drum, that's where the printed image occurs, so if the laser is blocked by toner on the glass that will result in lack of printed image.
Still, you said that is a little glass. If it is about two centimeters square or smaller, that could be the laser synch sensor lens. While I've never seen this before, I suppose if the laser synch sensor lens was dirty that might cause the laser to fire somewhat erratically, causing black lines. The next time you have the laser unit apart, you might want to check for a leak in the laser unit housing near there that lets the toner in, and cover the leak with electrical tape or something.

oh! i think just what u said! so you are the answer to my question! the laser synch sensor lens

[neocozhu]

Re: mpc 4500 black line

Well, where the laser hits the drum, that's where the printed image occurs, so if the laser is blocked by toner on the glass that will result in lack of printed image.
Still, you said that is a little glass. If it is about two centimeters square or smaller, that could be the laser synch sensor lens. While I've never seen this before, I suppose if the laser synch sensor lens was dirty that might cause the laser to fire somewhat erratically, causing black lines. The next time you have the laser unit apart, you might want to check for a leak in the laser unit housing near there that lets the toner in, and cover the leak with electrical tape or something.

well i have another question ,i donot think the dirty is toner ,if it toner leak in,there will be little toner in the bottom of the laser synch sensor lens.
but in the bottom it is nothing,so confusetion.

[kannuki2]

Re: mpc 4500 black line

change new BLK drum and developer as a set and see if it still leaks.

[Zeldaman]

[neocozhu]

Re: mpc 4500 black line

change new BLK drum and developer as a set and see if it still leaks.

thanks u ! i purchasing a ld unit to tyr first