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. 02, 2001
Filed:
Dec. 12, 1997
Applicant:
Inventor:
Charles Stanley Aldrich, Nicholasville, KY (US);
Assignee:
Lexmark International, Inc., Lexington, KY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/165 ;
U.S. Cl.
CPC ...
B41J 2/165 ;
Abstract
An ink jet printer has a maintenance station in which a movable sled starts from a known position due to a diagonally disposed return spring. A cam profile near the uppermost portion of vertical movement of a movable sled is produced in accordance with a quadratic equation. This quadratic designed equation profile reduces the force required to move the movable sled up the cam profile to its uppermost position. The return spring, which holds the movable sled in the known position by urging a front wall of the movable sled against a front wall of a support housing, also absorbs energy to decrease the noise level of the printer.