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:
Jan. 09, 2001
Filed:
May. 13, 1997
Applicant:
Inventor:
Bong-Gi Lee, Kyonggi-do, KR;
Assignee:
SamSung Electronics Co., Ltd., Suwon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/39 ; B41J 2/395 ; B41J 2/40 ; G03G 1/510 ;
U.S. Cl.
CPC ...
B41J 2/39 ; B41J 2/395 ; B41J 2/40 ; G03G 1/510 ;
Abstract
A method for detecting the status of the toner in a laser printer uses a photosensor. The method includes sampling a signal generated from the photosensor during a specified time, increasing or decreasing the value of a counter in accordance with an integral algorithm, and comparing the resultant counter value with a reference value, and displaying the status of the toner in the printer on a display device, depending on a result of such comparison. This method can accommodate relatively inexpensive photosensors. As the noise-ridden signal generated by such a photosensor is effectively filtered, this method is advantageous in cost and reliability.