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. 08, 2013
Filed:
Jun. 24, 2010
Ryouta Matsufuji, Isehara, JP;
Hideyuki Makita, Yokohama, JP;
Tadashi Mimura, Yamato, JP;
Satoru Tobita, Atsugi, JP;
Tomohiko Koda, Atsugi, JP;
Ryouta Matsufuji, Isehara, JP;
Hideyuki Makita, Yokohama, JP;
Tadashi Mimura, Yamato, JP;
Satoru Tobita, Atsugi, JP;
Tomohiko Koda, Atsugi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A liquid ejection head includes nozzles, separate chambers, a common chamber, inlet portions, a filter unit, and ribs. Droplets of liquid are ejected from the nozzles. The separate chambers are communicated with the nozzles. The inlet portions are communicated with the corresponding separate chambers. Liquid is supplied from the common chamber to the separate chambers through the inlet portions. The filter unit is disposed between the inlet portions and the common chamber to filter liquid in an area across the separate chambers in a first direction in which the nozzles are arrayed. The ribs are disposed in the filter unit at intervals corresponding in size to at least two of the separate chambers in the first direction to partition the filter unit. The inlet portions are communicated in the first direction with each other in at least one portion of each of the inlet portions facing the filter unit.