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:
Apr. 06, 2021
Filed:
Feb. 27, 2018
Hewlett-packard Development Company, L.p., Spring, TX (US);
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Abstract
A developing device including a developing roller mounted in a developing chamber is provided. In the developing device, the developing roller is partially exposed to an environment outside the developing chamber through an opening portion of the developing chamber, an air inlet is provided between an upstream boundary of the opening portion in a rotational direction of the developing roller and an outercircumference of the developing roller, wherein air may pass into the developing chamber through the air inlet, and an air outlet may be formed near the upstream boundary of the opening portion and communicatively connected to the developing chamber so as to discharge the air in the developing chamber. The air outlet is located outside an effective image area in a length direction of the developing roller.