公开(公告)号：US3981727A

公开(公告)日：1976-09-21

申请号：US476348

申请日：1974-06-05

Applicant: Alan C. Nelson ,  Lothar S. Jeromin

Inventor： Alan C. Nelson ,  Lothar S. Jeromin

IPC: G03G15/08 ,  G03G13/24

CPC classification number: G03G15/08

Abstract: Method and apparatus for reducing X-ray dosage required for xeroradiographic examinations without reducing the relative information capacity of the images produced during the examination. In particular, a charged xerographic plate is positioned adjacent the object to be examined and penetrating X-ray radiation is projected through the object onto the plate surface, forming a latent electrostatic image on the surface of the plate. The penetrating radiation utilized is of a substantially lower dosage than normally utilized. The image is then partially developed with developing powder and the partially developed image is then charged and exposed to substantially uniform radiation. The exposed charged image is finally developed by applying additional developing powder thereto resulting in an enhanced image or signal.

Abstract translation: 降低Xeroriography检查所需X射线剂量的方法和装置，而不会降低检查期间产生的图像的相对信息容量。 特别地，带电的静电复印板被定位成与被检查物体相邻，并且穿透X射线辐射通过物体投射到板表面上，在该板的表面上形成静电潜像。 所使用的穿透辐射具有比正常使用的显着更低的剂量。 然后将图像用显影粉末部分显影，然后将部分显影的图像充电并暴露于基本均匀的辐射。 曝光的带电图像最终通过施加额外的显影粉末而形成，从而产生增强的图像或信号。