Slit CoaterOther Coating / Development

01Characteristics of TAZMO's ultra precise slit coater

User friendly precise slit nozzle

  • Excellent thickness uniformity
  • Easy maintenance. After dismantling and cleaning the slit nozzle, you can easily assemble it with precision maintained. Super easy.
User friendly precise slit nozzle

High performance metering discharge pump

Better thickness control from the beginning.

User friendly precise slit nozzle

Air Floating Mechanism

Reduces chance of damage to substrate and eliminates static discharge

02Comparison with other coating methods and still coater

Coating Method Slit coater Ink jet Spin coater
Coating principal Coating material is discharged from a narrow gap between rigid and very precise dies.
Thickness of coating material can be highly uniform.
Droplets of coating materials are applied to the object to be coated. Small amounts of coating materials can be coated. Precise pattern coating is possible. The coating material is poured on the upper surface of the object to be coated and the coated object is rotated at high speed. Coating film is formed by centrifugal forces.
Illustration slit coater slit coater slit coater
Merit ① Small amount of coating material loss.
② Thickness of coating material can highly be uniform.
① High film thickness uniformity
② High-precision narrow frame functional film can be applied
③ High-precision landing and separate coating are possible
④ Material loss can be minimal.
① Thin and uniform coated films can be obtained.
② Simple mechanism
Demerit ① Material loss
② This method can be used only on flat surfaces
Slit coater
Coating principal Coating material is discharged from a narrow gap between rigid and very precise dies.
Thickness of coating material can be highly uniform.
Illustration slit coater
Merit Small amount of coating material loss.
Thickness of coating material can highly be uniform.
Demerit -
Ink jet
Coating principal Droplets of coating materials are applied to the object to be coated. Small amounts of coating materials can be coated. Precise pattern coating is possible.
Illustration slit coater
Merit High film thickness uniformity High-precision narrow frame functional film can be applied High-precision landing and separate coating are possible Material loss can be minimal.
Demerit -
Spin coater
Coating principal The coating material is poured on the upper surface of the object to be coated and the coated object is rotated at high speed. Coating film is formed by centrifugal forces.
Illustration slit coater
Merit HThin and uniform coated films can be obtained.
Simple mechanism
Demerit Material loss
This method can be used only on flat surfaces

03Evolution of Slit Coaters

TAZMO has been collaborating with several institutes and customers to create new technologies related to slit coaters. The followings are examples of the joint developments.

Slit Coater with heater

Heating nozzle, route of ink, pump and substrate enabled to coat diffcult-to-dissolve material.

Manual Slit Coater
Slit coater Gen7.5

One of the applications of this technology is to coat organic semiconductors to flexible panels, while it is crystalized at the nozzle of the coater with a heating function.

Compact Slit Coater for R & D

HTazmo has developed a compact system which can be installed inside of a small enclosure.

Manual Slit Coater
Coater inside of enclosure
Slit coater Gen7.5
Overview of the coater
Coating width50mm
Coating length75mm
Substrate size80 mm x 97 mm
Transfer speedUp to 50mm/s
UniformityLess than 10%
Dew pointMaintain less than - 80 Degree
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