searching for paticular test page

[Paul W.]

Where can I find a larger more printable version of this file?

It's familiar to us as the pattern you get when running the Alignment utility for the HP 9xx series. What I show here is the best I could find, at 96 ppi, about 3x4 inches. I'd like something at around 250 ppi, at 8 1/2 x 11.

Thank you.

 

[PeterBJ]

I don't quite understand the request.

I have an HP DJ930C and it produces that alignment/nozzle test print each time an ink cartridge is installed. The first black stripe with a checkmark is the pigment black, the dark grey stripe is the result of printing the three colours on simultaneously to produce a neutral grey. To force the printer to produce that print just remove and re-insert a cartridge and close the lid. The alignment procedure starts and the test print is the result. BTW the printer uses a smart trick in the alignment. It uses blue light to make the yellow print visible to a photo cell.

I use the scanner in a Canon MP970. It doesn't scan at 250 dpi but it can do 300 dpi scans. A 300 dpi scan of an A4 print out (210 x 297 mm or approx. 8.3 x 11.7 inches) is almost 25 MB when done as a .bmp. If I save the scan as a .jpg in best quality the file size is 5 MB.

But a scan of the printout is useless. Printing it won't perform any test or alignment. So there is no reason to upload that huge file, which might not be accepted by the forum software. The alignment procedure is a part of the HP DJ9xx firmware, as it can be performed without the printer being connected to a computer.

Drivers for newer Windows versions might miss some of the features included in older drivers, maybe an alignment function can be started by removing and ionserting a cartridge in the HP DJ842C if that is the purpose of the file you are asking for?

You can do some "tap tests" on HP DJ9xx series printers, maybe this also applies to the HP942C? Here are the tap tests for HP DJ9xx, click to enlarge:

 

[Ink stained Fingers]

such test/alignment prints are typically printed directly by the fimware to the nozzles, not passing the data through the driver at all. Any scanning/enlarging , generating that print at any other than the genuine hardware resolution and printing that image through the driver will add interpolation from scaling and create other effects like edge smothing, photo enhancing etc whatever nice options the driver is offering you.

 

[Ink stained Fingers]

Wetransfer is offering a nice service for file transfer - without registration - either as a kind of virtual e-mail attachment up to 2GB (the free service) or you can get a download link you can distribute or publish separately for multiple downlads - data remains available for a week. You can zip your data upfront with a password if you are looking for some protection.
https://wetransfer.com/

 

[Paul W.]

@PeterBJ : Thank you... I agree that my purpose was not clear. I have a 932C that can print that file without a computer, using taptests. But I couldn't print out that test with my other printer, an 842C. I don't have the tap code for it, nor do I have a driver for it. (Your attached taptest you attached didn't work on 842C, but will be very handy for my 932C, it's much more complete than my taptest.)

I wanted to print that file mainly for the purpose of comparing color accuracy in a side-by-side comparison of the two printers. I tried inserting and removing a cart to trigger printing of that test in the 842C but no luck there.I should've picked a simple CMYK file for that purpose. Sorry, my choice made the issue more complicated that it needed to be. But I did learn more about that alignment file... for example with my blue flashlight I was able to see the yellow patterns more clearly.

Please don't spend any more of your time on this, I could've made my quest easier to understand!

@Ink stained Fingers : I take your point of a firmware print being more informative than a driver print. For perhaps a crude analogy, it's like a raw file vs a jpg file in a camera.

Thanks to you both.