Question about Zebra Z4M Printer

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Print quality Ive had the printer for 4 years with no issues. There are no lines on the print, so I didnt suspect print head issues, however the edges of the text, especially large test that i print is now very very rough to the point that it looks really bad. The very fine small print is sketchy (ie a line will appear as dots or parts of a letter will be missed, but not all the parts in one row or pass. again, it may be a head issue, but when I read up on what happens when the heads go, it doesnt describe the problem this way. any help would be greatly appreciated thanks

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  • drgazsi Apr 25, 2008

    Umm Yes. That was the first thing I tried. They get cleaned about once a month. Tried changing the heat, pressure, slowing the print rate down, looked for bindings in the mechanism, changed the fonts, reset the settings, etc.


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You cleaned those heads lately?

Posted on Apr 24, 2008

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My brother MFC 665CW printer shows a 4F error and unable to clean. How do I get to the head to clean it?


Do the following to clean the print head:


1. Press INK key on the control panel.


2. Press the DOWN arrow key until CLEANING appears on the LCD.


3. Press OK.


4. Press the DOWN arrow key to select BLACK, COLOR or ALL depending on what you want to clean.


5. Press OK.


The machine will clean the print head. When cleaning is finished, the machine will go back to Ready automatically. If you are experiencing a print quality issue, we recommend you repeat the print head cleaning for each color showing an issue at least five (4) times.


If you are experiencing a print quality issue and want to see if the cleanings are improving the print quality, print a Print Quality Check Sheet (PQCS) after the first cleaning and then print another PQCS after repeating the print head cleaning steps at least three (3) more times (4 total cleanings). You can then compare the two Print Quality Check Sheets.


Do the following to print a Print Quality Check Sheet:


1. Press INK key on the control panel. TEST PRINT will appear on the LCD.


2. Press OK. PRINT QUALITY will appear on the LCD.


3. Press OK.


4. Press COLOR START.


NOTE: The machine will generate the Print Quality Check Sheet (PQCS). On the PQCS each of the four colors is represented by a slanted square pattern made up of 96 individual blocks. The colors should appear (from left to right): Black - Yellow - Cyan - Magenta. Cyan is the light blue color and Magenta is the pinkish color.

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align the heads in the control panel/ printer page for maintaining print cartridges.

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Well, to make a long story short, it's all about lining up different heads with each other.

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Ink well cleaners


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Hi,

Could be either or Both.

1:) Clean the print heads, using the printer toolbox et,c.
2:) Check the head alignment.
3:) check the printer rollers are in good condition.
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1 Answer

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Hi George,

It sound's like an ink-feed issue:

1) Dirty heads, even after cleaning
2) No-ink or poor quality ink
3) Damaged head: some are part of the cartridge, some are not
4) Air bubbles in ink

The test page is typically not as hi-res nor as saturated as a
photo print. The hi-res photo puts the greatest demand on the print head.

The color lines you see are actually lines of missing color,
where the head has failed to deposit ink, so one or two primary
colors are missing from the complete picture.

For example missing yellow will make a blue line.
Missing magenta will make a green line
Missing cyan will make a red line.... etc..

Clean the heads again and again, print again and again,
hoping to flush the system.

BUT, keep in mind that cleaning wastes huge amounts of
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This is a workaround - I too need a definitive answer. Symptom: black dotted vertical line 1/2 to 3/4" from leftmost image edge. I have begun adding single vertical line to my prints .25" from the left edge of the paper to force the "dots" off my print - this seems to have the desired affect, but it does not answer the cause or provide a true remedy (it will save many of your prints while we wait for complete solution). dkh

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Untitled Document Follow this procedure to clean the BJ cartridge print head:
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2 Answers

Lines along edge of paper


1 of 3 things I can think of off top of my head.
Since they are straight, I would suspect the transfer unit.
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