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RJ-900 Print Head Alignment
OVERVIEW
As with all printers produced by Mutoh, the head alignment steps on the RJ-900 and RJ-901 are quite
straightforward. These steps are common across the entire Mutoh product line although different names
may be used for each function from time to time.
This bulletin includes the relevant pages from the Mutoh service manual, along with corrections for
instructions that may be inaccurate or out of date.
MATERIALS NEEDED
•
#2 Philips screwdriver - for removing cover screws
•
5x or greater power loupe
•
Flashlight - a single LED unit such as a Mini Maglite is preferable due to its brightness. Also, a
blue LED light may help illuminate the yellow alignment patterns, which can be very difficult to
see under normal lighting conditions.
•
At least 10 to 15 feet of available paper for printing the alignment patterns.
PROCEDURE
1. Start the printer in Self Diagnostic Mode by holding down the UP, DOWN, and RIGHT arrow keys during
initialization. Release the keys when the printer displays Check: Test.
2. Press the RIGHT arrow key to display Check: Adjustment. Make sure that you have paper loaded and
the lever is down before you press ENTER.
3. Using the menu tree shown on the following page as a guide, go through the steps in this order:
a)
Nozzle check. This step is to ensure that the head is firing properly.
b)
Slant check 1. In this step, you will compare the first (black) and last (yellow) channels to
determine if the head is slanted. This can be adjusted through a lever on the side of the
head carriage.
c)
Slant check 2. This pattern determines whether there is a vertical adjustment (slant) to
the print head. This step is generally not necessary unless the head carriage has been
replaced or reinstalled.
d)
Uni-directional alignment. This adjusts the electronic timing of each of the 8 channels on
the print head to each print mode (the print mode is a combination of head height and car-
riage speed).
e)
Bi-directional alignment. This is a single adjustment that compensates for the alternating
directions of carriage travel when printing bi-directionally. One adjustment must be made
for each print mode.
INKJETBIZ
Technical Bulletin
Call Us: a (408) 394-7595 • www.inkjetbiz.com
SUPPORT
tib 1006-001
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Related Manuals for MUTOH RJ-900
Summary of Contents for MUTOH RJ-900
- Page 1 RJ-900 Print Head Alignment OVERVIEW As with all printers produced by Mutoh, the head alignment steps on the RJ-900 and RJ-901 are quite straightforward. These steps are common across the entire Mutoh product line although different names may be used for each function from time to time.
- Page 2 SUPPORT INKJETBIZ tib 1006-001 Technical Bulletin RJ-900 Print Head Alignment RJ-901C/RJ-900C Maintenance Manual 5 Self-Diagnosis Mode 5.5 Adjustment Menu In this menu, the printing position can be aligned and media feed operation can be corrected. The adjustment menu includes the following diagnosis menus.
- Page 3 SUPPORT INKJETBIZ tib 1006-001 Technical Bulletin 5 Self-Diagnosis Mode RJ-901C/RJ-900C Maintenance Manual RJ-900 Print Head Alignment Table 5-4 Diagnosis Items in Adjustment Menu (Continued) Diagnosis item Contents Reference Test printing Prints out a nozzle check pattern and adjustment "5.5.12 Test variables.
- Page 4 SUPPORT INKJETBIZ tib 1006-001 Technical Bulletin RJ-900 Print Head Alignment RJ-901C/RJ-900C Maintenance Manual 5 Self-Diagnosis Mode Next menu Previous menu [Enter] key CCW Adjustment Menu Low 1 [Cancel] key Next menu Previous menu [Enter] key CCW Adjustment Menu Low 2...
- Page 5 Head ID will be updated. [Enter] key After ink cartridge is installed RJ-900 Print Head Alignment 5.5.3 Head Nozzle Check Menu In this menu, the head nozzle printing to confirm ink is fired from nozzles correctly after the ink charge, are available.To check the head nozzle condition, follow the steps below.
- Page 6 RJ-901C/RJ-900C Maintenance Manual 5 Self-Diagnosis Mode RJ-900 Print Head Alignment Horizontal nozzle alignment check (CW direction): Prints the patterns in the order of A to H. Horizontal nozzle alignment check (CCW direction): Prints the patterns in the order of A to H.
- Page 7 SUPPORT INKJETBIZ tib 1006-001 Technical Bulletin RJ-900 Print Head Alignment 7 Adjustment RJ-901C/RJ-900C Maintenance Manual 7.7 Head Alignment Adjustment(Horizontal Height) This section describes the procedure to adjust the head slant in horizontal direction. When you have removed and installed the head assembly, such as for head assembly replacement, always adjust the head slant and depth following the steps below.
- Page 8 Technical Bulletin 7 Adjustment RJ-901C/RJ-900C Maintenance Manual RJ-900 Print Head Alignment 7.8 Head Alignment Adjustment(Slant) This section describes the procedure to adjust the head slant in vertical direction. After operation such as head assembly replacement, adjust the head slant according to the steps below.
- Page 9 INKJETBIZ tib 1006-001 Technical Bulletin RJ-901C/RJ-900C Maintenance Manual 7 Adjustment RJ-900 Print Head Alignment 3. Loosen the vertical-slant adjusting tab screw and move the tab left and right to adjust the head vertical angle. Part name Vertical-slant adjusting tab Vertical-slant adjusting tab screw 7.9 Cutter Holder Height Adjustment...
- Page 10 SUPPORT INKJETBIZ tib 1006-001 Technical Bulletin RJ-900 Print Head Alignment RJ-901C/RJ-900C Maintenance Manual 5 Self-Diagnosis Mode 5.5.6 CW Adjustment This menu is used to adjust the gap of the print positions caused by CR passes. To adjust the gap of it, at first print out Uni-D printing and confirm the differences of print position. Then, enter the difference for the relevant parameters.
- Page 11 SUPPORT INKJETBIZ tib 1006-001 Technical Bulletin RJ-900 Print Head Alignment 5 Self-Diagnosis Mode RJ-901C/RJ-900C Maintenance Manual 3. Check the printed CW adjustment check patterns for the following points. (The following shows a case for CW adjustment Low 1) Print the patterns in the order of A&B / A&C / A&D / A&E / A&F / A&G / A&H.
- Page 12 SUPPORT INKJETBIZ tib 1006-001 Technical Bulletin RJ-900 Print Head Alignment 5 Self-Diagnosis Mode RJ-901C/RJ-900C Maintenance Manual 4. If any abnormal conditions are found, identify the gap of the print positions and enter it as the CW adjustment parameter. After entering the parameter, make the machine print out the check patterns again as necessary.
- Page 13 1006-001 Technical Bulletin RJ-901C/RJ-900C Maintenance Manual 5 Self-Diagnosis Mode RJ-900 Print Head Alignment 5.5.7 Repeatability Adjustment Menu This menu is used to align the head positions for repeatability printing. To align the head position for repeatability printing, at first print out a Bi-D printing and identify the difference between the CW printing position and the CCW printing position.
- Page 14 SUPPORT INKJETBIZ tib 1006-001 Technical Bulletin RJ-900 Print Head Alignment 5 Self-Diagnosis Mode RJ-901C/RJ-900C Maintenance Manual In this case, note that while 3. Check the printed repeatability adjustment patterns for the following points. the alignment pattern shown * The pattern is printed with Bk row only.
- Page 15 1006-001 # 2 ALL (Middle) Technical Bulletin # 1 ALL (Low) RJ-900 Print Head Alignment 6B 6A 5B 5A 2A 1B Magenta shown below, average across the entire width of the test print then repeat for all other heads and heights.
- Page 16 Write the date on the resulting print, roll it up, and store it inside the left hand cover of the printer. You may also use the Mutoh Maintenance Engineer Assistant program to take a backup of the machine's memory. See GOTEK TIB 1006-002 for directions on using that program.
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