Ricoh Company, Ltd.

Kunihiro Miura

Takahiro Yoshida

Kiyoshi Yamaguchi

Takafumi Sasaki

Kenichiroh Hashimoto

Kunihiro Yamanaka

Hideyuki Makita

An image forming apparatus is disclosed that includes a liquid discharger including a liquid discharge head configured to discharge a droplet of liquid so as to form an image. The liquid discharge head includes multiple individual channels communicating with corresponding nozzles from which the liquid is discharged; a common channel configured to supply the liquid to the individual channels; a deformable member configured to form at least one wall face of the common channel; and a vibration damping member formed of a viscoelastic material, the vibration member being provided in contact with the deformable member.

Image forming apparatus

A liquid discharging head includes a plurality of nozzles for discharging liquid, a channel member formed of a metal plate, and a contacted member for being contacted by the channel member. The channel member includes a plurality of liquid chambers, each of which is connected to one of the plurality of nozzles, and a separation wall for separating adjacent liquid chambers from each other. The separation wall includes a center portion and a contact surface. The center portion is provided at a center of the separation wall in a long direction of the separation wall. The contact surface contacts the contacted member, and is tilted in a cross-section of at least the center portion of the separation wall taken in a short direction of the separation wall.

Liquid discharging head with increased strength and image forming apparatus including the liquid discharging head

A liquid ejection head including a plurality of nozzles, a plurality of pressurizing liquid chambers, a liquid supply portion, and a filter portion. The plurality of nozzles ejects liquid droplets. The plurality of pressurizing liquid chambers are in fluid communication respectively with the nozzles. The liquid supply portion includes a plurality of individual supply channels and a fluid-communicating portion. The plurality of individual supply channels are in fluid communication respectively with the pressurizing liquid chambers to supply a liquid to the pressurizing liquid chambers. The fluid-communicating portion keeps the plurality of individual supply channels in fluid communication with one another. The filter portion is positioned to face the individual supply channels of the liquid supply portion and filters the liquid supplied to the pressurizing liquid chambers.

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Atsugi, Japan

Kunihiro Miura