Drawing and erasing apparatus and erasing method
US11364727B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2019 |
| Grant date | Jun 21, 2022 |
| Priority date | — |
| Expiry date | Jun 6, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/3336
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A drawing and erasing apparatus includes a light source section that includes a plurality of laser elements different from each other in emission wavelength, a multiplexer that multiplexes a plurality of types of laser light beams outputted from the plurality of laser elements, a scanner section that performs scanning with multiplexed light outputted from the multiplexer on a reversible recording medium including a plurality of recording layers, the plurality of recording layers being reversible and different from each other in developed color hue, and a controller that controls a main scanning speed and a sub-scanning speed of the scanner section to cause the scanner section to perform overlapping scanning of a predetermined region on the reversible recording medium during erasure of information written on the reversible recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.