mpc4502 poor fusing

[slot]

we have an mpc4502 that has had the sleeve changed and the fuser drive motor and the customer complains of poor fusing on plain and headed paper after 20+ copies the headed paper is about 90gsm its in a large charity and the end users wont select thick paper etc so to work round the problem we adj the fuser temp on bw and colour to the temp of middle thick 155c. this we thought would fix the problem and it did but only for about a week the firmware is all up to date I could do with a little advice here I know we fitted the new type sleeve and the toner is all OEM we have even change the fuser .

[Iowatech]

Re: mpc4502 poor fusing

It probably would be better to wait to see what others say as I've never worked on that model.
But I do have a suggestion you may wish to consider -
Double check that the pressure roller is installed correctly. As in the it contacts the sleeve equally across their entire width. On older non-sleeve fusers that would cause me grief if I was in a hurry. The easiest way is to check the fusing nip if that's possible.
Sorry if that was a waste of time.

[sturmtrooper]

Re: mpc4502 poor fusing

we have an mpc4502 that has had the sleeve changed and the fuser drive motor and the customer complains of poor fusing on plain and headed paper after 20+ copies the headed paper is about 90gsm its in a large charity and the end users wont select thick paper etc so to work round the problem we adj the fuser temp on bw and colour to the temp of middle thick 155c. this we thought would fix the problem and it did but only for about a week the firmware is all up to date I could do with a little advice here I know we fitted the new type sleeve and the toner is all OEM we have even change the fuser .

If your users are refusing to use the machine in the manner which it was designed to be used that's going to make it a lot harder. Can you convince them to use the bypass and then program the the bypass to default to thick paper? It may need more than just the temperature adjustment. I'm not sure if there is a way you can get the machine to slow down other than telling it that it is feeding thick paper.

[slimslob]

Re: mpc4502 poor fusing

When the user sets the proper thickness, it not only adjusts the fusing temperature but on some models also changes the speed of the motors, slightly extending the fusing time. On other models, they will increase the gap between pages going through the fusing unit to allow the temperature of the pressure to recover. Since it take 20 copies for the fusing to start to fade, this is due to the temperature of the pressure roller fading. You may also want to check the line voltage at the wall. If it is low, the fusing temperature will fade faster.

[copier tech]

Re: mpc4502 poor fusing

When the user sets the proper thickness, it not only adjusts the fusing temperature but on some models also changes the speed of the motors, slightly extending the fusing time. On other models, they will increase the gap between pages going through the fusing unit to allow the temperature of the pressure to recover. Since it take 20 copies for the fusing to start to fade, this is due to the temperature of the pressure roller fading. You may also want to check the line voltage at the wall. If it is low, the fusing temperature will fade faster.

^^^^^Exactly! you're going about this the wrong way. If the customer is too lazy to change the paper tray settings it's their problem, advice them they will be charged if they book a call due to user error.

I had the exact same issue but sold the customer an additional paper bank so they can have all their trays set up correctly & all their paper online without switching trays etc.

[tonnerboy]

Re: mpc4502 poor fusing

Hello.

I understand your point of view. I also find many customers who make a lot of resistance in making the correct settings for the type of job to be done.
From the technical point of view though you have a justification to "hold your position" it may also result in losing your customer in the future... It's a daily battle to satisfy customer wishes...

In addition to the fusing temperature take a look to these SP's 1151-xxx. This will encrease or decrease the pressure in the fusing Unit.

[slot]

Re: mpc4502 poor fusing

many thanks for your inputs the 02 copiers are just so weak when it come to the fuser I will check out the sps thanks

[ruben]

Re: mpc4502 poor fusing

If they don't want to change the printer driver settings everytime, you could set the default to middle thick or thick 1. Then set the copier's tray all to the same thickness, or set the tray's to ignore the machine settings and use the driver settings instead.

[Counsel]

Re: mpc4502 poor fusing

I would be with ruben on this, instead of changing the fusing temp settings i would put them back at default and just set all the trays and driver to thick 1, they can run plain paper on thick settings and it will work fine just maybe slower then 45 ppm, but they will have fewer problems that way.

As for the fusing sleeve it was junk on the 4502/5502 i believe they did try to improve it a little before the 03 series came out but its supposed to last like 250k pages and I find they last more like 75k-100k on average with the occasional machine making it to the 200k mark. Updating the firmware does help as they changed some settings to defaults for fusing and fixed some issue with the fuse that was later added to the assembly. I would update the rom and set up the trays and drivers for thick 1 settings, if they want normal speeds on plain printing they have to learn to use the settings as intended otherwise they will continue to have issues with it.

[logrady2331]

Re: mpc4502 poor fusing

After more than thirty years in this business I have a somewhat unpopular view on issues like this. The customer is wrong. The specs say to change the thickness setting and use the bypass. It works like it's supposed to if you follow the guidelines. If I let the customer be right when they are clearly wrong, all I'm doing is setting myself and my company up for failure. Finding a work around is okay for an emergency but being afraid to pull the trigger is not very smart in my book.

[mbolduc]

Re: mpc4502 poor fusing

MPC4502 5502 poor fusing.pdf

Take a look at service bulletin 014, there are adjustments in there to slow down machine and adjust temps. However, the customer should be meeting you half way and using the machine as designed.

[qbert69]

Re: mpc4502 poor fusing

....as the saying goes, "Stupid is as Stupid Does!"

If the user/customer is trying to achieve results in a certain way that is CONSISTENTLY FAILING due to the constraints of the machine and media involved, they need to MODIFY their behavior and machine settings to achieve an acceptable result. If they want to play the "stupid card" you'll have to set the MFP to the "Middle Thick" and run their print driver on "Middle Thick" setting in the default print driver settings, otherwise they will get a paper mismatch message on the MFP!

Case in Point--Glossy Brochure Paper--you can't run this sh!t on a middle thick setting for it to fuse properly!--you will more than likely have to run it at cardstock thickness to achieve proper fusing!