HP Latex 370 loading media the wrong width

[KellyP12]

Short and sweet - as the title says.

I have been using the same 50.5" W (our paper's real/actual size) media for years now, and lately our 370 has been loading it correctly within our normal tolerance of skew, but once it gets loaded, shows up as 46.5" W instead of 50.5" or at least something extremely close to that like 50.55" or 50.6". It's not a question of if the RIP is interpreting the width wrong, it's more me wondering what is going wrong that it's reading the paper width 4" too short. That's a huge amount! Could it be a failing part? Something not reading the edge properly?

We just had service done on it and I believe the line sensor was replaced, along with many other things. I also cleaned the OMAS and the drop detect sensor, along with other usual maintenance like cleaning the encoder strip to see if perhaps it was having trouble moving the carriage X and Y, but none of these things seem to be the case. Any suggestions?

 

[BigNate]

I see no one has jumped in yet.... I am not too familiar with your printer, but I have a 700W that had similar issues reporting the wrong size of media.... The install tech from UBEO fixed the problem about 2 years ago - right after install - There was a setting that would let it measure the roll width, then use the roll arbitrary width measured or it could make a looser measurement and then it has some standard sizes stored....

While you make sure you have this setting correct - also check that the encoder strip is clean. It cannot get a good measurement with a dirty ruler,

 

[netsol]

I am more of a roland guy, i know less about the hp’s
what do they scan for width? Roland scans a reflective tape on the outside pinch rollers, at least
on many of the older machines.

IF YOU LOAD a different roll size, is it accurate?
good test is to make a “cut sheet”;test (advance 24 inches of vinyl, sheet cut, turn 90 degrees and load manually) Is it read incorrectly as well?.

 

[balstestrat]

Maybe they failed to calibrate the line sensor or it's not installed all the to the bottom correctly.
I'm quite sure it's either one of those.

 

[kkotvas]

Short and sweet - as the title says.

I have been using the same 50.5" W (our paper's real/actual size) media for years now, and lately our 370 has been loading it correctly within our normal tolerance of skew, but once it gets loaded, shows up as 46.5" W instead of 50.5" or at least something extremely close to that like 50.55" or 50.6". It's not a question of if the RIP is interpreting the width wrong, it's more me wondering what is going wrong that it's reading the paper width 4" too short. That's a huge amount! Could it be a failing part? Something not reading the edge properly?

We just had service done on it and I believe the line sensor was replaced, along with many other things. I also cleaned the OMAS and the drop detect sensor, along with other usual maintenance like cleaning the encoder strip to see if perhaps it was having trouble moving the carriage X and Y, but none of these things seem to be the case. Any suggestions?

I notice that we frequently have a similar problem. When loading a 54" roll of something the machine reads it in as 60" wide. But when I look at our right it will say something like 60" media and have (53.4") in parenthesis. So its like it knows that its reading it in wrong. We just ignore it because in the RIP, when the jobs are sitting in the queue waiting to be printed, we can tell that the files are ganged up on a 54" width media and not 60". If it showed the layout on 60" obviously there would be a problem and the printer would print past the actual width of the media. Its strange because it never used to do that but the 360 is close to 10 years old now.

 

[kkotvas]

Short and sweet - as the title says.

I have been using the same 50.5" W (our paper's real/actual size) media for years now, and lately our 370 has been loading it correctly within our normal tolerance of skew, but once it gets loaded, shows up as 46.5" W instead of 50.5" or at least something extremely close to that like 50.55" or 50.6". It's not a question of if the RIP is interpreting the width wrong, it's more me wondering what is going wrong that it's reading the paper width 4" too short. That's a huge amount! Could it be a failing part? Something not reading the edge properly?

We just had service done on it and I believe the line sensor was replaced, along with many other things. I also cleaned the OMAS and the drop detect sensor, along with other usual maintenance like cleaning the encoder strip to see if perhaps it was having trouble moving the carriage X and Y, but none of these things seem to be the case. Any suggestions?

What kind of paper are you using on your latex printer?