Question about HP DesignJet 450c InkJet Printer

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Printer not responding

I have an HP Designjet 450c, hooked up to my laptop via a parallel to usb cable. It installed and printed a test page properly. Then, I unplugged it from my computer, plugged it back in, and now it won't respond at all. My computer says everything is fine, but the printer won't do anything. I've tried shutting down both my laptop and the printer and restarting, and still nothing. I can't print from any application, nor will it print a test page.

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  • 67 Answers

Try the HP500Hpgl2 driver, it will work with a USB port.

Posted on Jan 10, 2009

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1 Answer

Connecting the JetDirect 300x to my HP Designjet 450c


If you have a tower, rather get an internal parallel card.... works like a dream

Feb 24, 2016 | HP DesignJet 450c InkJet Printer

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How to print test page on HP DesignJet 450C


There are various pre-defined prints which are built-in with the printer. To test the printer, you can get the Demonstration Print by pressing SETUP and CANCEL keys simultaneously. You also can get more information by reading the HP 430/450/488 User's Guide page 5-2.

Dec 18, 2010 | HP DesignJet 450c InkJet Printer

1 Answer

I have a hp 450c plotter and it will not print.


Has this USB to Centronics cable worked in the past, but has now stopped?
The reason I ask is that there are two kinds of parallel ports, and so two kinds of USB-to-Centronics adapators. One is unidirectional, and one is bidirectional. If your plotter requires bidirectional, then it won't work properly with unidirectional.

Jun 10, 2010 | HP DesignJet 450c InkJet Printer

1 Answer

Bought the HP750C/Plus from work (it worked fine)


Can be tricky... DO NOT use a USB/parallel convertor. Either use USB only or parallel only to connect to your computer. I would NOT attemp to use a USB/serial convertor either.

If your computer does not have a parallel then best plan is to get an old PC with parallel connector and transfer data to it to be sent to the Designjet.

Apr 02, 2010 | HP DesignJet 750c plus InkJet Printer

1 Answer

Our 450C plotter is connected via E-Net Hub and has extened memory. The "Test Printer" works. However it will not complete an Auto Cad Drawing. The ready light continues to flash but the plotter stops. any...


This could be one of a number of things. The file being sent must be smaller than the total memory of the printer. Connect the computer directly to the plotter with a parallel printer cable and see if it prints. If you are using an OS newer than XP, try using the XP 32 bit driver. If you are printing from AutoCad 14 or older, upgrade AutoCad (newer uses Windows printer drivers). If you can print OK with the parallel cable, get new external JetDirect software from the HP website.

Jan 15, 2010 | HP DesignJet 450c InkJet Printer

1 Answer

Trying to connect a lap top to the 450C designjet but don't have the proper connection to hook up


I believe this plotter has both the old centronics and a 25 pin serial connection. Your laptop MAY have a 7 pin serial connection which you can get a 7 pin to 25 pin serial cable. If your laptop does not have a serial port, you MIGHT find a USB to serial adapter cable.

Make sure you are not on Vista or Win 7 operating systems as they likely do NOT have compatible drivers for this plotter.

Jan 13, 2010 | HP DesignJet 450c InkJet Printer

1 Answer

I misread the HP 450c supported operating system webpage, thinking HP had drivers supporting Vista 64bit. It appears many others have had the same problem and perhaps found a solution. Is there a driver...


have you tried hooking it up usb and letting vista install it for you? vista has an amazing amount of drivers and its pretty good at getting one to work another thought is trying hp's universal drivers. i test alot of machines and i use the univerrsal drivers for almost everyhing

Nov 04, 2009 | HP DesignJet 450c InkJet Printer

2 Answers

HP DesignJet 450c printer issues.


You can purchase a External JetDirect card from any reputable HP (or computer) agent. This will allow you to plug the 450 directly into the network. The problem with the large format printers not being supported is strange to me. I have never had a problem, simply load the drivers and away you go. If the 450 drivers dont work for you, you can select any of the older drivers (750c recomended) and they will work on the 450c

Feb 26, 2009 | HP DesignJet 450c InkJet Printer

7 Answers

HP DesignJet 450c driver for windows vista


THIS SOLUTION IM ABOUT TO TELL YOU IS IN MY EXPERIENCE THE EASIEST ONE JUST DOWNLOAD THE WINDOWS XP DRIVER FOR THE HP DESIGNJET 450C PRINTER AND INSTALL IT INTO THE WINDOWS PRINTER PLATTFORM, YOU MAY SEE SOME ANOUNCEMENTS FROM YOUR COMPUTER TELLING YOU THAT THE PROGRAM YOUR TRYING TO INSTALL MAY NOT BE COMPATIBLE "DONT LISTEN TO THEM" JUST CONTINUE YOUR INSTALLATION AND PRESTO YOUR DESIGNJET PRINTER WILL WORK PERFECTLY

Feb 20, 2008 | HP DesignJet 450c InkJet Printer

1 Answer

450c Plotter apparently dead


Check the cable connections, and the cable connector inside the plotter. Make sure your cables are good.

Dec 29, 2007 | HP DesignJet 450c InkJet Printer

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