[Info-vax] Brother MFC-L3750CDW

[Paul Anderson]

On 5/2/21 9:54 PM, Zane H. Healy wrote:

> I finally was able to figure out why I've not been able to get DCPS working.
> It seems that the "HP LaserJet Pro M404dn" doesn't like IP_RawTCP, which
> worked just fine with old "HP LaserJet 5MP" and the JetDirect box.  Once I
> switched that to IP_LPD in the DCPS config it started working.
> 
> Duplex printing now works, and I spent some time relearning some other
> features.

As time goes on, fewer and fewer printers adhere to the Adobe PostScript 
standard of sending a ^D character to the host when a print job is done. 
This is why using DCPS with IP_RawTCP no longer works on many printers.

A RawTCP connection on port 9100 is bi-directional, so is more robust. 
But if a printer is ill-behaved, the uni-directional LPD is the 
solution, as you have found.

Paul