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Toner-print removal from paper by long and ultrashort pulsed lasers
- Source :
- Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 468:2272-2293
- Publication Year :
- 2012
- Publisher :
- The Royal Society, 2012.
-
Abstract
- Toner-print removal from paper would allow paper to be re-used instead of being recycled, incinerated or disposed of in landfill. This could significantly reduce the environmental impact of paper production and use. Previous work on the subject has explored the applicability of ultraviolet, visible and infrared (IR) lasers under nanosecond pulses for toner removal. This article expands on this work by testing a wider range of ultrafast and long-pulsed lasers. Results from 10 distinct laser set-ups are used to propose an operating window for the toner-removal process. Colour analysis under the L * a * b * colour space, scanning electron microscope examination and attenuated total reflectance–Fourier transform IR spectroscopy measurements of the outcome show that, with the right laser, it is possible to remove toner from paper to enable its re-use. Theoretical models to predict the laser ablation of toner are discussed, and, while imperfect, provide sufficient evidence to support a physical explanation of toner ablation.
- Subjects :
- Laser ablation
Materials science
business.industry
Infrared
Scanning electron microscope
General Mathematics
General Engineering
General Physics and Astronomy
Infrared spectroscopy
Nanotechnology
Nanosecond
Laser
medicine.disease_cause
law.invention
law
medicine
Optoelectronics
business
Ultrashort pulse
Ultraviolet
Subjects
Details
- ISSN :
- 14712946 and 13645021
- Volume :
- 468
- Database :
- OpenAIRE
- Journal :
- Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
- Accession number :
- edsair.doi...........aca518683caf0cbb077999d10731594c