We have translucent and reflective type of Hybrid/Metal/PET film
and newly developed polycarbonate/meltforming.
It is possible to assemble the disk with reinforcement, double-sided tape
etc. and mass production at China plant.
1. Hybrid (translucent/reflective)
High accuracy metal type is realized by using nickel clad material for hybrid type.
Translucent type etching dimention accuracy list
| Thickness（t） |
Bar code min.
dimension（D） |
tolerance |
| 0.04 |
0.04 |
±0.008 |
| 0.06 |
0.05 |
±0.008 |
| 0.08 |
0.06 |
±0.008 |
| 0.1 |
0.075 |
±0.008 |
| 0.15 |
0.15 |
±0.01 |
| 0.2 |
0.20 |
±0.015 |
Reflective type etching dimention accuracy list
| t |
Bar code min.
dimension（D) |
tolerance |
| 0.07 |
0.04 |
±0.008 |
| 0.10 |
| 0.12 |
Assembly with hub
Technology highlights
- As Ni layer improves accuracy, high accuracy and high definition etching is possible.
- As it has nickel clad structure, each metal layer is etched and difference between upper and lower aperture can be made with high accuracy.
- Bar code error is within max. 0.008 on concyclic.
- Bar pitch tolerance is within 0.003 and circularity within ±0.01.
- Ref: high contrast between reflective and non- reflective.
- Ref: compared to film product, insusceptible by humidity
- Ref: reflective area more than 60% and non-reflective area less than 10%.
- Ref: minimum bar code width 0.05 is possible.
2. Metal (translucent)
Metal (SUS) is processed by photo etching to make encoder disk.
Assembly with metal and plastic hub is also available.
Assembly with hub
Technology highlights: Fine processing ＜Glass master type＞
- SUS304 planarity sheet for photo etching is used.
- Minimum bar code width is around 0.07（t=0.04）
- Bar pitch tolerance within ±0.002, max and min difference of bar code tolerance in the same lot within 0.02.
- Center run-out within 0.01, circularity within 0.01 is possible.
- Internal dia. accuracy range is within 0.03 (0.01 is possible when finished with a reamer.)
Technology highlights: Standard processing ＜Film master type＞
- SUS304 planarity sheet for photo etching is used.
- Minimum bar code width is around 0.08（t=0.05）
- Bar pitch tolerance within ±0.003, max and min difference of bar code tolerance in the same lot within 0.04.
- Center run-out within 0.015, circularity within 0.015 is possible.
- Internal dia. accuracy range is within 0.04 (0.01 is possible when finished with a reamer.)
3.PET film (translucent/reflective)
Fine pattern is printed on the PET film base to make encoder disk.
Assembly with reinforcement, double-sided tape and plastic hub etc. is also available.
With double-sided tape/molding hub
Technology highlights
- High precision of minimum bar code width0.01(pitch 0.02) is possible.
- Achievable bar pitch tolerance within±0.002, bar code area tolerance is within±0.002
- Center run-out within 0.015, internal diameter within±0.01, circularity within 0.01 is possible
- Concyclic bar code difference error is within 0.005.
- Rate of change by temperature 1x 10-3%/℃.
- Rate of change to relative humidity 1% is 1x 10-3%.
- Aluminum deposition for reflective type. Reflective rate 60%.
4. Polycarbonate type (translucent/reflective)
Trying to achieve the same precision as glass scale at low cost.
Technology highlights
- Lower cost than glass scale
- Crashproof and splinterless
- Fine and high precision
- High heat-resistance（120℃）
- Both transparent and reflective types are available
- Non-penetration bar code made of alminium is formed.
5. Melt-forming type（reflective）
Integrated technogly of nickel electrocaxsting and etching process.
Pcocessing accuracy of electrocasting is maintained and high precision product of t=0.1 or more is available.
Technology highlights
- Min.code width 0.02（pitch 0.04）
- Achiebable bar code tolerance ±0.002
- Duty ratio 1：1 is possible
- Reflective area 65％ or more and non-reflective area 10％ or less.
