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:
Dec. 22, 2015
Filed:
Mar. 22, 2012
Kazuo Mukaibatake, Kyoto, JP;
Kazuo Mukaibatake, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
The larger an m/z to be adjusted, the wider a peak width which represents change in intensity in relation to change in voltage. This allows voltage step size to be increased during a search for an optimum voltage without overlooking a maximum intensity. Thus, a relational expression which gives a narrow voltage step size for a low m/z and gives a wide voltage step size for a high m/z is prestored in a voltage step information storage unit (), an optimum voltage adjustment controller () finds an optimum voltage step size for the m/z to be adjusted, during automatic voltage adjustment using the stored information, and controls a power supply unitso as to change a voltage applied to a first ion guide () stepwise. Ion intensity obtained each time the applied voltage changes is determined, and a voltage value which gives a maximum ion intensity is found and stored in an optimum voltage information storage unit (). Consequently, during automatic adjustment of a voltage applied to an ion transport optical element such as an ion guide, the time required for the adjustment can be reduced without overlooking an optimum voltage value which gives a maximum ion intensity.