Xerox J75 Running Collated, Mixed Stock VERY VERY slow

[jpfulton248]

I just got done running a mixed stock, collated job that took 5 hours. In total I ran 1600 sheets of 11x17 1/1. Each set was comprised of 31 sheets of 20lb bond and one sheet of 65lb cover. We printed in Productivity Mode. When we print a job like this the printer to stop each time it changes from 20lb to 65lb or the other way around so that it can either heat up the fuser or cool it down. The result is that the job takes extremely long.

One thing we could do differently is run the covers first and then insert them using the inserter. We are thinking about trying it next time. Will the machine run faster if we do that?

Another thing I'm unsure about is what would happen if I ran this type of job on Standard Mode instead of Productivity Mode. Does anybody know?

Unfortunately this time of year we are very very busy so I don't have time to do a lot of experimenting. Any help appreciated.

 

[MailGuru]

The J75 uses a standard (traditional) heat & pressure fuser. Either mode (production of standard) will run mixed stock very slow. As you indicated, the fuser must pause at the stock change to adjust heat & pressure. If that is your only digital press, your best bet would be to run covers & insides as two separate runs, then collate/insert post print. If you have (2) J75's, you could run covers on one, while running the insides on the other.

The Versant's and the X800/1000's use a different fusing method (a low heat fuser belt), so, they will run mixed stocks at normal speed.

 

[Guest]

Running covers first and inserting them is definitely faster as long as you tell the machine they are all the same weight of paper. If it thinks all the trays are are weight there is hardly any hesitation between switching trays. Another work around is to tell the printer they are all the same on a setting that works for both weights tell machine it's all 100# book weight- and check the covers to make sure fuser is cooking the toner enough. Best!

 

[jpfulton248]

Running covers first and inserting them is definitely faster as long as you tell the machine they are all the same weight of paper. If it thinks all the trays are are weight there is hardly any hesitation between switching trays. Another work around is to tell the printer they are all the same on a setting that works for both weights tell machine it's all 100# book weight- and check the covers to make sure fuser is cooking the toner enough. Best!

Nice trick. Next time we'll try this if the inserter is too slow. Thanks.

 

[PrintIT]

The Versant's and the X800/1000's use a different fusing method (a low heat fuser belt), so, they will run mixed stocks at normal speed.

That's not our experience with our 1000's. They slow to a crawl if we try to run mixed stocks - There's still a fuser temp adjust between stocks.

 

[arossetti]

That's not our experience with our 1000's. They slow to a crawl if we try to run mixed stocks - There's still a fuser temp adjust between stocks.

Are you using the mixed weights print mode? Still will slow down if you mix coated/uncoated so just trick the printer into thinking they are both the same.

 

[PricelineNegotiator]

With our J75 I would just run the inserter for the cover stock, having run them previously. It runs very quickly if done this way. We only run our J75 in productivity when doing light coverage heavy stock and long run 6 x 11" postcards (15,000+).

Hope this helps.

 

[AP90]

One trick I've found with my 1000i is when making a booklet with a different cover to go ahead and print it, and then insert it but not with the production finisher inserter, but with another paper tray. It is especially handy if you have a full bleed cover and no bleed on the insides. When I set up a booklet in CWS, I select it as a preprinted cover and set it to say tray 2. I then load tray 2 with the covers, and set the paper setting to the same GSM as the booklet guts, but as ivory color. The ivory cover is so the printer doesn't pull from that try if you run out of paper for the guts in another tray. The printer won't slow down at all when it pulls the cover from that tray, and you can run a rated speed. Also eliminates offline trimming of booklets for just a cover bleed.