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Member Since: ‎01-15-2014
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HP PhotoSmart C4780 --- Software communication with the HP-GL/2 and HP RTL

Operating System -- Windows-7

Programming language -- Java

Printer -- C4780


I have written a program which peforms editing on image-files. I am currently using the available Java classes which

interact with printer-drivers in oder to get he resultant images printed. The standard Java classes that interact with

image-objects all expect that the format of the images to be at 100 pixels-per-inch. Unfortunately, when the printer

class sets up a print-job, it transmits the image to the driver as if it were at 72 PPI -- and it (I assume) informs the printer-driver that  the desired output format is 72 DPI. My image is seriously goofed-up by this process.


My intension is to eventually write a new (and hopefully better) class to perform the necessary software-connection to the available printer-driver(s).


I actually have 2 general questions ---


1)  Does HP hve any tutorial software that I can look at to get a better idea of what is required for interaction with any printer-driver?


2)  Does the standard HP RTL provide a capability to instruct the printer-driver in what DPI to use in setting up the print-job?

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