mikeymikec
Lifer
A customer called me in to take a look at some printing problems. The problem they experienced was that when they printed something, if say there was a table outline, then parts of the table would be misaligned by about 3mm. On other parts of the page, a large piece of text might have three copies of the text printed over each other, like someone is experiencing double vision (but triple obviously), yet parts of the page were printed perfectly (and it wasn't in vertical portions of the page either). Also, if one prints the same page three times, the flaws would show up in exactly the same places.
A Windows test page came out 100% fine (pre Win8x so it includes all the colours). A Word document containing only 'The quick brown fox jumps over the lazy dog' pasted about 50 times also printed fine. The Canon test page printed fine (which includes a couple of images). A quick table I drew up in Word with 16x8 cells and numbers in half of them printed fine.
However, here comes the kicker - if I disconnected the printer from the computer and told it to copy a sheet of paper, it screwed up the printing (though on one occasion it didn't), yet it could scan via USB to the PC flawlessly.
Since the printer couldn't even copy successfully (I powered the printer down, disconnected USB, then switched on and attempted to copy), IMO the problem had to be inside the printer. My guess is that its electronics are faulty in some way I've never seen before, perhaps once it has to process beyond a certain amount of data, it starts hiccupping.
A Windows test page came out 100% fine (pre Win8x so it includes all the colours). A Word document containing only 'The quick brown fox jumps over the lazy dog' pasted about 50 times also printed fine. The Canon test page printed fine (which includes a couple of images). A quick table I drew up in Word with 16x8 cells and numbers in half of them printed fine.
However, here comes the kicker - if I disconnected the printer from the computer and told it to copy a sheet of paper, it screwed up the printing (though on one occasion it didn't), yet it could scan via USB to the PC flawlessly.
Since the printer couldn't even copy successfully (I powered the printer down, disconnected USB, then switched on and attempted to copy), IMO the problem had to be inside the printer. My guess is that its electronics are faulty in some way I've never seen before, perhaps once it has to process beyond a certain amount of data, it starts hiccupping.
