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.

Date of Patent:
Mar. 02, 2004

Filed:

May. 01, 2002
Applicant:
Inventors:

Kazuaki Arai, Tokyo, JP;

Koichi Negishi, Tokyo, JP;

Takao Uchida, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/500 ;
U.S. Cl.
CPC ...
G03G 1/500 ;
Abstract

A printer uses a consumable component having an internal fuse that is blown when the consumable component is installed. In one aspect of the invention, the consumable component includes a resistor connected in series with the fuse. Before the fuse is blown, the resistance value of the resistor is checked to make sure that the correct type of consumable component has been installed. In another aspect of the invention, if the fuse fails to blow on the first attempt, this is recorded in a memory and a second attempt is made later, the consumable component being used in the meantime. In still another aspect of the invention, the consumable component includes a resistor or thermistor connected in parallel with the fuse, enabling a consumable component with a blown fuse to be distinguished from a consumable component that is not installed.


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