Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Matsushita Electrical Industrial Co., Ltd.

Hiroaki Nakashima

Hiroyuki Matsuba

Kazunari Chikanawa

Hideo Torii

Tohru Nakagawa

Takeshi Kamada

Seishi Tomari

Akihiro Yamashita

An ink jet head unit including a head () in which a plurality of nozzle arrays () are formed. Each of the nozzle arrays has a number of nozzle holes, and ink can be ejected from the nozzle holes. The head () is mounted on the head base, and flat cables () are connected at one end to mounting parts (), which are interposed between a first pair of the nozzle arrays () and a second pair of the nozzle arrays (). The flat cables are flexibly formed by covering transmission wires with an insulation film. The flat cables are connected to the head to transmit ink ejection signals for driving the head.

Ink jet head unit and ink jet recording apparatus mounted with the same

Print head for an ink jet printer

Printed circuit board

Plural nozzle arrays of which each comprises plural nozzle holes () from which ink is ejected are arranged slantingly in a main scanning direction. A distance between a first arbitrary nozzle hole (-) and a second nozzle hole (-), in a nozzle array adjacent to the array to which this first nozzle hole (-) belongs, which is adjacent to the first nozzle hole (-), and a distance between the first nozzle hole (-) and a third nozzle hole (-), in the nozzle array to which the second nozzle hole (-) belongs, which is further adjacent to the first nozzle hole (-) are different from each other.

Nozzle head, line head using the same, and ink jet recording apparatus mounted with its line head

An ink jet recording apparatus, which performs printing by ink ejection, includes a pressure chamber in which ink liquid is filled; a nozzle hole () which is formed so as to communicate with the pressure chamber; a piezoelectric element () which is formed on the pressure chamber, and deforms the pressure chamber by mechanical expansion and contraction, whereby pressure is generated in the pressure chamber and ink is ejected from the nozzle hole (); and a dew point control unit () which maintains a dew point in an atmosphere of the piezoelectric element () and the vicinity of the piezoelectric element at a lower value than a dew point in an environment where the ink jet recording apparatus is set. The dew point control unit () includes a compressor (), and an air drier () which dries compression gas from the compressor () and feeds it to the piezoelectric element.

Ink jet recording apparatus

The ink-jet head includes: a nozzle plate having a plurality of nozzles; a head body including a plurality of pressure chambers for storing ink, the pressure chambers communicating with the respective nozzles, and a plurality of actuators for applying pressure to the ink in the pressure chambers to allow the ink to be discharged from the nozzles; and a bonding layer made of an adhesive formed between the nozzle plate and the head body for bonding the nozzle plate and the head body together. A passage extending from an inner region to an outer region is formed in the bonding layer.

Ink-jet head and method for producing the same

Growing community of inventors

Kasuga, Japan

Hiroaki Nakashima