1. Printer sublimation tegnology
SERVICE SUPPORT (Spanish Branch)
Printer sublimation tegnology
Objective:
The followings contents try to use the same definition for all efects (key words)
Which will be understand each other
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2. Key word = Obiki (Smearing)
SERVICE SUPPORT (Spanish Branch)
Key word = Obiki (Smearing)
Black
area
Especially Light grayish “back ground”
Thermal head
Printing direction
Smearing symptom
reason
sample
Printing Starting
Paper Direction
This symptom will be caused due to thermal responce of thermal head from black (high temperature) to white (low temperature) changing.
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3. Problems due to the paper Mechanism, the paper has
Key word = Skew (skew)
Problems due to the paper
Mechanism, the paper has
A shifting moviment from the left
to right and vice versa
Printing area
Printed paper
Photo Nº 1

4. Key word = Nodo Mura ( Uniformity of printing density)
SERVICE SUPPORT (Spanish Branch)
Key word = Nodo Mura ( Uniformity of printing density)
“Noudo Mura” is general word about the un-uniformity of printing density.
One of the SAMPLES
One of the REASONS
Thermal head
Printing direction
Uneven thermal head surface cause Uniformitil level efect, and makes not good constant contact between thermal head/inksheet/paper and platen roller.
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5. REASON SAMPLE Key word = Fuka Mura
SERVICE SUPPORT (Spanish Branch)
Key word = Fuka Mura
REASON
SAMPLE
White area change into of gray back ground produce un evengray
Thermal head (internal constructions)
+ voltage input
data
Comun ground
virtual resistor
The comun cable, which goes to the comun ground, it is not a perfect conductor, it has a small resistence less than 1 Ω, it is represented above, like a virtual resistor.
Therfore a big current will produce a big DDC to the virtual resistor.
The voltage adjusment is fixed, then when the current is lower due to a bigger are white then virtual resistor will has low voltage in betwem,
when the current is bigger due to gray back ground therfore the voltage in the virtual resistor will be bigger, it means that, for the same voltage input, the total current will be different betwen, gray and white area,.
therfore this difference is different gray value betwen.
all thermal head area making gray or half thermal head making gray.
Look at the attache photo
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6. Key word = Siwa (Wrinkling)
SERVICE SUPPORT (Spanish Branch)
Key word = Siwa (Wrinkling)
REASON
sample
Thermal Head Voltage Adjustment too high
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7. Key word = Kizu ( Scratch on printing surface)
One of the reasons
sample
Thermal head
Possible causes
Small roughness on the plate indicated with the circle
In this case, it could be resolverd with a lapping sheet
Also this phenomen can be produced by cutter when the paper pass trought it
Dust or another dirty material
It can be resolved rubbing with laping sheet
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8. Key word = Okuri Mura (Banding)
sample
REASON
Printer direction
When the paper running or the Ink Shent running they don´t have even moviment
Then in both cases appear banding efect,
Check the publicated technical note for details
On the another hand when the platter roller , or any related roller, they have some defect , appear banding.
Gears, torke limiter, ink motor or paper motor can produce bading too if some one has some defect
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9. Key Word = Suji Mura (wide line or stripe pattern in general concept)
Wide line or stripe pattern of printintg density in the paper feeding direction
Any density problem due to paper, ink or themal head missalignment which still is not recognized the reason
Printing
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10. The efect can appear in the following cases
Key Word = Sticking
Strong noise
The efect can appear in the following cases
High room temperature and dark image printing continusly
Due to Ink sheet characterics
Wrong thermal head alignment
Too high voltage voltage for thermal head
In this condition appear sticking
It means that is difficutl remove the paper from the ink sheet
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11. Frontal View Thermal head
Key word = Drag Line
sample
REASON
Frontal View Thermal head
Platten Roller
Axis View
Thermal head
DRAG LINE EFFECT
The thermal head has to be alineated for the above cases
Thermal Head Adjustemnt
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12. Key word = Kasure ( un-even of printing uniformity)
REASON
Thermal head No good contact between thermal head heater line an platten roller
Frontal View
Platten Roller
Axis View
Thermal head
sample
Thermal Head Adjustemnt
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13. Key word = Niji Mura (Rainbow Stripe)
sample
REASON
The enviroment light is reflected on the photo mainly with very dark areas it.
It appear due to Over Coat protection where the light is reflected and appearing Nijin Moura (rain Bow), mainly with very dark images
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14. sample Key word = Block Nuke (white band) REASON
data
voltage
virtual resistor
Comun grond
Driver unit
To the transitors
If the driver unit marked with a circle is broken which is inside of thermal head, then all the pixels related to the driver will be inoperated, terfore will appear a white ban on the photo
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15. Key word = Dot Nuke (White line)
sample
REASON
Dead a heater pixel on thermal head
Data CMOS IC
voltage
virtual resistor
Comun grond
Driver unit
data
To the transitors
Pixel dead due to Electroestatic discharge
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16. Key word = Shiro Nuke ( Thermal head scratch)
sample
REASON
Surface head damaged
White line cause by thermal head damaged
Paper running direction
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17. Key word = Iro Zure (Miss registration)
sample
REASON
Miss registration of the printing position with yellow magenta and cyan color
This effect apperar when appear driving problems with the paper or Ink sheet
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18. Key Word = Tofu mura ( Un uniformity of ink)
Sample-1
REASON
This uniformity is caused by the ink sheet with un-uniformity of printed ink on inksheet firm.
Sample-2
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