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:
Mar. 19, 2024
Filed:
Nov. 07, 2022
Minoru Masuda, Shizuoka, JP;
Tohru Suganuma, Shizuoka, JP;
Masashi Nagayama, Shizuoka, JP;
Hiroyuki Kishida, Shizuoka, JP;
Kento Takeuchi, Shizuoka, JP;
Kaede Masuko, Shizuoka, JP;
Tomomi Suzuki, Shizuoka, JP;
Takuya Suganuma, Kanagawa, JP;
Kazuki Yogosawa, Tokyo, JP;
Minoru Masuda, Shizuoka, JP;
Tohru Suganuma, Shizuoka, JP;
Masashi Nagayama, Shizuoka, JP;
Hiroyuki Kishida, Shizuoka, JP;
Kento Takeuchi, Shizuoka, JP;
Kaede Masuko, Shizuoka, JP;
Tomomi Suzuki, Shizuoka, JP;
Takuya Suganuma, Kanagawa, JP;
Kazuki Yogosawa, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing apparatus includes an electrostatic latent image bearer, a developing sleeve, a case, and an air filter. The case accommodates a two-component developer and the developing sleeve. The air filter is attached to the case. The air filter has a thickness of 2 to 20 mm and has a density gradient with a pressure loss of 2 to 40 Pa at a wind speed of 10 cm/s. The air filter forms an airflow sucked into the case from a gap between the developing sleeve and the case and forms an airflow discharged from the case through the air filter. The two-component developer accommodated in the case contains a magnetic particle a surface of which is coated with a resin layer. The resin layer contains at least one type of chargeable particle.