Epson's new A2 format Stylus Pro 3800 has stirred up a lot of interest because it's not that much larger than an A3 printer and because you don't need to physically swap black (photo black and matt black) cartridges when changing between matt and gloss or semi-gloss papers, which wastes ink in other Epson printers.
HP's new B9180 printer, which we're currently testing, also makes swapping the photo and matt black cartridges a thing of the past, but there is a difference. The B9180's two black cartridges have their own print head channels and so they are primed and ready to go at all times. We asked Epson if this was the same for the Stylus Pro 3800. The reply was:
"The SP3800 has an 8 channel head (7 colour, 1 black), but has 9 ink cartridges, and 9 lines running from the ink supply to the print head. There is an automatically controlled switch on the print head, which switches depending upon the media selection in the driver, and this selects either Photo or Matte black ink. The head is flushed when the ink is switched, but it is a minimal amount because only the printhead is cleared, it does not need to flush the entire ink line back to the ink cartridge."
So there you have it, the HP system is technically superior but Epson says relatively little ink is wasted. HP also point out an advantage in that the B9180 print heads are user-replaceable, while Epson ones are factory replaceable only. I also put this to Epson while I was a Photokina last month. Their view is that HP print heads have to be easy to replace because thermal ink jet print heads wear out gradually (also causing variablity in the linearisation of the print head - explaining why auto linearisation was necessary with the B9180), while Epson's piezo heads have a life that will be longer than that of the printer. Epson kind of implies that there is a chance that a relatively small saving in ink for HP owners is more than offset against the likely chance that you will need to buy a new print head at some stage.
Interesting!
Ian
HP's new B9180 printer, which we're currently testing, also makes swapping the photo and matt black cartridges a thing of the past, but there is a difference. The B9180's two black cartridges have their own print head channels and so they are primed and ready to go at all times. We asked Epson if this was the same for the Stylus Pro 3800. The reply was:
"The SP3800 has an 8 channel head (7 colour, 1 black), but has 9 ink cartridges, and 9 lines running from the ink supply to the print head. There is an automatically controlled switch on the print head, which switches depending upon the media selection in the driver, and this selects either Photo or Matte black ink. The head is flushed when the ink is switched, but it is a minimal amount because only the printhead is cleared, it does not need to flush the entire ink line back to the ink cartridge."
So there you have it, the HP system is technically superior but Epson says relatively little ink is wasted. HP also point out an advantage in that the B9180 print heads are user-replaceable, while Epson ones are factory replaceable only. I also put this to Epson while I was a Photokina last month. Their view is that HP print heads have to be easy to replace because thermal ink jet print heads wear out gradually (also causing variablity in the linearisation of the print head - explaining why auto linearisation was necessary with the B9180), while Epson's piezo heads have a life that will be longer than that of the printer. Epson kind of implies that there is a chance that a relatively small saving in ink for HP owners is more than offset against the likely chance that you will need to buy a new print head at some stage.
Interesting!
Ian
Comment