Question about HP DesignJet 450c InkJet Printer

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450c Plotter apparently dead

I have a s/h 450c A1 plotter connected to a stand-alone PC running XP. I use a USB to Parallel connector. It did work fine. The computer now seems not to recognise the plotter. I have re-loaded the drivers and re-installed the plotter but it won't send even a test page. The document is spooled into the PC's software and is shown as a waiting document but the plotter does nothing. All the boot-up routine on the plotter runs normally and the "ready" light comes up as it should. I have it running to USB 001 but am not sure how I change that to try one or other of the USB ports. Any ideas anyone?

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  • Daylight Jan 25, 2008

    I found the problem; it was simply that the plotter was assigned to the wrong USB port. Once I changed that all was perfect.

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1 Answer

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

Posted on Jan 25, 2008

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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

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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

2 Answers

Vista driver for the plotter needed


You can find & download the drivers at the following link:
http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?lang=en&cc=us&prodNameId=12686&taskId=135&prodTypeId=18972&prodSeriesId=25253&submit.y=7&submit.x=10&lang=en&cc=us

Jul 16, 2009 | HP DesignJet 450c InkJet Printer

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450c color problem


The 430 ID is B/W, you need to load the 450C driver to get color, renaming the driver isn't enough.

Oct 13, 2008 | HP DesignJet 450c InkJet Printer

5 Answers

I have a Roland Camm-1 CX-24 cutting machine that has a parallel connection. I have recently bought a Dell Inspiron 1720 with a Windows Vista OS. I have a USB to Parallel cable to connect the two. I have...


connect the printer and the comp. and boot up....windows should recognize the new device.
did you add the plotter to "add printers" and its driver and to the correct port?
make sure your plotter is on and loaded and function key pressed.
also some cable manufacturers supply a driver...so download one if need be.
what software are you using? is the software cutter driver set to the correct printer and port?
(by default it never is)!!

Aug 03, 2008 | Computers & Internet

1 Answer

Plotter only printing in Cyan


Check your black cartridge. Do the pump the cartridge thing with the plunger on the left of the plotter. Check all the electrical connectors on the cariage and the cartridge - clean with water -or wd40 if you are very careful and check that all the contacts, about 40 of them are clean and undamaged on each cartridge. Replace with known working cartridges. run a color test as specified in the manual -- hp has relased the manual for this printer as they no longer service this unit.

Jun 23, 2008 | 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

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