Only printing when I disconnect the USB cable

A quick look at the HP web site for this printer shows that it only supports Max OS X 10.6 and later. These versions only support the intel processor based macs. Your PowerPC mac is, unfortunately, obsolete as far as Apple and the peripheral manufacturers are concerned and is not supported.

Important OS X pre-installation instructions: The Macintosh OS X driver found on the CD provided with your product is not intended for use with Intel-based Macintosh computers. If you have already installed the OS X printer driver provided on your product CD, please follow these important instructions before installing the "epson11769.dmg" file:

1. Open the OS X "Printer Setup Utility".
2. Select the "Printer Setup Utility" tab and click "Reset Printing System...".
3. Click the "Reset" button.
4. Restart your computer.
5. Install the downloaded "epson11769.dmg" file.

Installation instructions (some of the following steps may not be necessary):

1. Download the file.
2. Double-click the downloaded file to create a disk image on your desktop.
3. Open the disk image.
4. View the included "Readme First.pdf" document for important information.
5. Double-click the installer icon to begin the installation

link to driver

disconnect usb, delete all old attempts, do not connect untill prompted by install

• Verify that the power outlet you're using is good and your power cable is firmly connected to the wall outlet-if using a surge protector, be sure that it's firmly plugged into the wall outlet. Also, try temporarily plugging directly into the wall outlet to eliminate any issue with the surge protector; plug a different electronic device into the same wall socket to make sure the socket works, and also try the iMac's power cable in a different wall outlet.
• Make sure the computer's power cable is firmly connected to the computer.
• If any external devices are connected to your iMac, disconnect them and try to turn the computer on again. If the iMac will power up when those devices are removed, but not when they are connected, contact the manufacturer of those devices for assistance.
• Try resetting the iMac's SMC
• Remove and reinstall the SO-DIMM memory modules, located in the bottom of the computer.

• Resetting the SMC for Mac Pro, Intel-based iMac, Intel-based Mac mini, or Intel-based Xserve
  

  1. Shut down the computer.
  2. Unplug the computer's power cord.
  3. Press and hold the power button for 5 seconds.
  4. Release the power button.
  5. Attach the computers power cable.
  6. Press the power button to turn on the computer.

I am on an iMac using OSX 10.5.8 and printing on an Epson R1800. With iWork, word processing module I set up the envelope to print and under the File menu, select page setup and choose #10 Envelope with Portrait orientation. I feed the envelope into the printer in the normal horizontal, top first, print surface up. In the File menu I select Print and hit Return. Most of the time this works. Sometimes the envelope feeds through without printing, and occasionally the envelope won't feed but the printer goes through the printing cycle. The R1800 is not the ideal envelope printer. It is made to print photos on photographic paper. I use an old fashioned typewriter to address envelopes.

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c01844302
Try this link for OS 10.6 Snow Leopard drivers.

You can log on to the hp site and get the current driver/printer software for your printer. Get the mac os version and install via usb. Download and install then restart your imac... then attempt a print...
Should work fine with an iMac.
K

4500N can't be recognize with an Intel Mac, because the Appletalk doesn't work. My solution to print: I've got a powerPC as an interface between Imac intel and fuji network adapter. The pictro driver is installed on both machines. On The Intel, The Appletalk is connected on Airport. On the PowerPc, The Appletalk is connected on Ethernet. Ethernet cable between powerPC and pictro network adapter. SCSI2 cable between PNA and the 4500. Of course, auto calibrating + eye-one color calibrating. WELL!! it works.

Download and install updated driver.
http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?BV_UseBVCookie=yes&oid=26321&prodoid=37472317&infoType=Downloads&platform=All

Intel-based Macs with OS X (v10.4.4 - v10.5.x), PowerPC Macs with OS X (v10.2.8 - v10.5.x)
epson11899.dmg - 29.8MB - posted on 01/21/08

 

mac book pro has a usb cable right? you can actually use it to connect to the r2400 and then dont use a guten driver use the downloadable driver for r2400 for leopard instead

Macintosh OS X 10.5 drivers for your product are available for download from the Epson support site.

1. Go to the Epson support website (www.epson.com/support).

2. Select your product model and download the driver for OS X 10.5 Leopard operating system.

Note: Be sure to select the appropriate driver compatible with your system: PowerPC or Intel Intel based.

I'm part way there.  I rang Lexmark and they say P6350 can only work with Mac OS up to 10.4 whereas I'm using 10.5.2.  I'm not yet fully convinced it can't be made to work and a knowledgeable friend will be round later.  I may get back to you. Porphyry