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| Content Provider | Springer Nature Link |
|---|---|
| Author | Shinada, Hidetoshi |
| Copyright Year | 2016 |
| Abstract | Digital printing systems recorded on films or computer to plates (CTPs) have been required to improve their productivity and image quality. Under the circumstance, a printing technology of the multi-beam laser scanning for the drum capstan system, which is almost the same as optics configuration as the flat bed system, was developed using a newly developed multi-frequency acousto–optic modulator (AOM) as a key device instead of ultra-fast scanning devices toward a main scan direction. The multi-frequency AOM was developed with phased array-type transducers, achieving a wider bandwidth of over 160 MHz. The design consisted of a simultaneous three beams generation with interlace scan to avoid the beat effect by adjacent Doppler-shifted beams, which consequently attained the fastest recording speed of 5.0 mm/s compared with 2.0–3.0 mm/s of existing systems in those days. Furthermore, a couple of critical parameters of the multi-frequency AOM are studied, for example, a treatment of third-order intermodulation and also beat effect in connection with photosensitive media. As a result, the necessity of interlaces scanning to obtain good image quality without beat effect and also to allow a lower laser power to apply is proposed. |
| Starting Page | 765 |
| Ending Page | 769 |
| Page Count | 5 |
| File Format | |
| ISSN | 13406000 |
| Journal | Optical Review |
| Volume Number | 23 |
| Issue Number | 5 |
| e-ISSN | 13499432 |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2016-08-22 |
| Publisher Place | Tokyo |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | AOM Multi-frequency Bandwidth Multi-beam Diffraction Efficiency Optics, Lasers, Photonics, Optical Devices Atomic, Molecular, Optical and Plasma Physics Quantum Optics Microwaves, RF and Optical Engineering |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics |
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