Sony Corporation

Akihito Miyazaki

Masato Nakamura

Takeo Eguchi

Shigeyoshi Hirashima

Shinichi Horii

Hiroyasu Uchida

Masayuki Takakura

Makoto Ando

Atsushi Nakamura

Hiroshi Tokunaga

Kazuyasu Takenaka

Shota Nishi

Takumi Namekawa

Hiromitsu Takeda

Toshiki Kagami

Naoshi Ando

A negative pressure generated inside a liquid-ejecting head can circulate liquid between the liquid-ejecting head and a liquid tank, prevent the liquid from leaking out of nozzles while the liquid is circulating, and remove bubbles contained in the liquid. A head cartridge includes a printhead ejecting ink from ink-ejecting nozzles formed in a nozzle plate of the printhead, an ink-supplying conduit supplying the ink from an ink tank to an ink chamber in the printhead, an ink-refluxing conduit refluxing the ink from the printhead to the ink tank, and a liquid-delivering pump disposed on the ink-refluxing conduit and circulating the ink between the printhead and the ink tank. The liquid-delivering pump is driven to generate a negative pressure inside the printhead to circulate the ink between the printhead and the ink tank.

Head cartridge and liquid-ejecting apparatus

A line head includes a nozzle plate, a frame-shaped outer frame, a plurality of head chips, and a head support member arranged within the outer frame. The linear expansion coefficients of the nozzle plate and the head support member are larger than that of the outer frame. The nozzle plate is joined onto the outer frame and a tensile stress is produced in the nozzle plate by the outer frame. The head support member is joined and fitted with the outer frame. When the head support member thermally expands relative to the outer frame, a compression stress is produced in the head support member while a strain of the head support member is restricted by the outer frame.

Liquid ejection head, liquid ejection apparatus, and manufacturing method of the liquid ejection head

A print head for a line printer in which errors between print head chips and another component are reduced and ink leakage is prevented, and in which heat generated in print head chips is efficiently dissipated without making the structure of the print head complex or increasing the size of the print head. A plurality of print head chips () are arranged along an ink path () and are disposed on both sides of the ink path in a zigzag pattern. Dummy chips () which do not eject ink are disposed at regions between the print head chips () arranged along the ink path (). In addition, an ink-path member () is provided, at least a part of the ink-path member () which includes portions adhered to the print head chips () being composed of a material having a high thermal conductivity, so that the ink-path member () also serves as heat-dissipating means which dissipates heat generated in the print head chips ().

Print head

Disclosed herein is a printer having a printer body and a consumable related to printing means, such as an ink cartridge and an ink ribbon, wherein the consumable can be very easily replaced and the electrical connection between the consumable and the printer body can be easily effected. In a printer ( ) having a printer body ( ) and an ink cartridge (consumable related to printing means) ( ) replaceably mounted in the printer body, an ink cartridge tray (consumable tray) ( ) for detachably storing the ink cartridge is movably provided in the printer body. A connector ( ) provided on the ink cartridge is connected to a connector ( ) provided in the printer body when the ink cartridge tray is inserted into the printer body.

Printer

Growing community of inventors

Kanagawa, Japan

Akihito Miyazaki