Xeroradiographic intraoral dental system
US4346983A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1979 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Jul 24, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An x-ray imaging system for intraoral dental radiography. The imaging process is based on xeroradiographic principles, the surface of a small photoconductive plate being electrically charged. After insertion into a carrier, to form a light-tight cassette, the photoconductive plate is placed in a patient's mouth and x-ray exposed. The cassette, and the resultant electrostatic charge image therein, is inserted into the system processor, the photoconductive plate removed and transported to a developer station wherein the image is developed using liquid toner. The toner image is then dried and transferred from the photoconductive plate by using a transparent adhesive material and fixed to a white plastic substrate, forming an image carrier wherein the image can be viewed in reflectance or transmittance. After cleaning, the photoconductive plate is available for reuse. The system has a storage compartment for receiving cleaned photoconductive plates of various sizes for subsequent insertion into an empty cassette. An output station having a device for determining the size of the empty cassette mounted therein provides a control signal which permits a cleaned plate of a predetermined siz…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.