The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2005
Filed:
Aug. 29, 2002
Takashi Shimono, Kuroiso, JP;
Takashi Shimono, Kuroiso, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An X-ray generator comprises a cathode electrode (), a grid electrode () for controlling an electron beam (e) generated by the cathode electrode (), a focus electrode () for focusing the electron beam (e), and an anode target () for emitting X rays by the collision of the electron beam (e). A bias voltage (Vb) is impressed between the cathode electrode () and the grid electrode () from a bias voltage generating section (). A tube voltage (Vt) is impressed on the anode target () from a tube voltage generating section (). A voltage dividing section () divides the tube voltage (Vt) to generate a focus voltage (Vf). The effect of a variation in voltage on the formation of a focal point of the electron beam is suppressed by impressing such a focus voltage (Vf) on the focus electrode ().