Hello,
I would like to submit to you experts a rather strange problem on my Canon i965.
I havent found anything like it on the web and since I already found some very useful hints on this forum in the past, I thought I might well try to get this problem solved here.
The quality of printing on my i965 has been degrading and I decided to solve that. I had horizontal lines on every photo printout and also a strange change of color at the end of each page (I print borderless photos on A4 paper).
I started by dismounting and cleaning the print head.
Worked perfectly, no horizontal lines anymore, all colors print plain, except for an area which starts at a bit less than an inch from the end of the page.
In this part of the page (photo or drawing, no matter what), every area that has magenta in it is a bit paler than on the rest of the page.
The pages that come out of the alignment tests (both semi-automatic and manual) show a problem in column C:
The pattern is identical at all levels, from -3 to +7, having small white vertical stripes equally spread over the pattern. And whatever I do in correcting levels, nothing changes.
The standard nozzle check pattern prints perfectly, except again for this column C (same as above) and the magenta rectangle. This rectangle is divided in 2 strokes, the upper half is OK and the lower half is just a bit lighter than the upper half. I would say the color of the lower half is just like the magenta photo rectangle.
I also printed the factory test page with the Power/resume button trick. This now shows more precisely what is wrong: In the magenta extended nozzle check pattern, the horizontal lines are missing in every other row.
Amazingly, the printed photos are superb, except for the last inch (roughly, it is a bit less, 23 mm to be precise).
I have not been able to find out what this column C stands for.
Has it anything to do with printing direction? Funny enough, I have the impression that when the printer is near the end of the page, it changes its noise and paper feed is slower than before. As if the printer would switch off bidirectional printing mode Can that have anything to do with the problem?
And, more important, can I solve it?
Should I insist in cleaning the print head again? But my guess is that if the print head would still be dirty the print quality would be poor all over the page and not only in the last inch.
I have tried several driver versions, I have done the EEPROM reset on the printer. I don't know what I can do more.
Thank you in advance for having read me until here. I will appreciate any help or advice!
Ronald from Paris.
I would like to submit to you experts a rather strange problem on my Canon i965.
I havent found anything like it on the web and since I already found some very useful hints on this forum in the past, I thought I might well try to get this problem solved here.
The quality of printing on my i965 has been degrading and I decided to solve that. I had horizontal lines on every photo printout and also a strange change of color at the end of each page (I print borderless photos on A4 paper).
I started by dismounting and cleaning the print head.
Worked perfectly, no horizontal lines anymore, all colors print plain, except for an area which starts at a bit less than an inch from the end of the page.
In this part of the page (photo or drawing, no matter what), every area that has magenta in it is a bit paler than on the rest of the page.
The pages that come out of the alignment tests (both semi-automatic and manual) show a problem in column C:
The pattern is identical at all levels, from -3 to +7, having small white vertical stripes equally spread over the pattern. And whatever I do in correcting levels, nothing changes.
The standard nozzle check pattern prints perfectly, except again for this column C (same as above) and the magenta rectangle. This rectangle is divided in 2 strokes, the upper half is OK and the lower half is just a bit lighter than the upper half. I would say the color of the lower half is just like the magenta photo rectangle.
I also printed the factory test page with the Power/resume button trick. This now shows more precisely what is wrong: In the magenta extended nozzle check pattern, the horizontal lines are missing in every other row.
Amazingly, the printed photos are superb, except for the last inch (roughly, it is a bit less, 23 mm to be precise).
I have not been able to find out what this column C stands for.
Has it anything to do with printing direction? Funny enough, I have the impression that when the printer is near the end of the page, it changes its noise and paper feed is slower than before. As if the printer would switch off bidirectional printing mode Can that have anything to do with the problem?
And, more important, can I solve it?
Should I insist in cleaning the print head again? But my guess is that if the print head would still be dirty the print quality would be poor all over the page and not only in the last inch.
I have tried several driver versions, I have done the EEPROM reset on the printer. I don't know what I can do more.
Thank you in advance for having read me until here. I will appreciate any help or advice!
Ronald from Paris.
