Ricoh Company, Ltd.

Yusuke Nonoyama

Takahiko Matsumoto

Naoki Satoh

Masanori Hirano

Takeshi Akai

Kiyoshi Yamaguchi

Daisuke Arai

Hidekazu Yaginuma

Shinichi Hatanaka

Yoshiyuki Ishiyama

Tatsuya Sameshima

Yu Yamaya

Nobuaki Toyoshima

Masayuki Yumoto

Natsuko Iwashita

Takehiro Yamazaki

Toshihiko Hosoya

Provided is a liquid droplet discharging apparatus that can maintain stable discharging even when a liquid containing particles or cells adheres to a nozzle surface.

Liquid droplet discharging apparatus

A droplet discharge device for discharging a droplet into recess parts of a storage vessel includes a storage vessel, a discharge head configured to insert a discharge surface into a recess part and discharge droplets while moving in two horizontal directions, a mounting table, a vertical position adjusting part configured to change a relative vertical position between the head and table, a vertical position adjustment control part configured to control the adjusting part, a horizontal position detecting part configured to detect a horizontal position of the storage vessel, and a target position detecting part configured to detect, before starting discharge, a distance from a vertical reference height to a discharge target surface, wherein the control part controls, based on the detected distance, the vertical position of the head or table during the discharge such that a discharge height of the discharge surface relative to the discharge target surface stays constant.

Droplet discharge device and droplet discharge method

An object of the present invention is to provide a technique for precisely arranging nerve cells on a substrate while suppressing the migration of nerve cells. A manufacturing method for a substrate on which nerve cells are arranged is provided, the method including a step of arranging, on a substrate, a plurality of liquid droplets containing nerve cells by an inkjet method to form one or a plurality of liquid pools, the substrate having a region in which a cell adhesive material is arranged and a region in which a cell non-adhesive material is arranged; and a step of incubating the liquid pool until the nerve cells sediment and temporarily adhere onto the substrate to form a cell aggregate. The diameter per one liquid pool is 500 μm or less, and the density of nerve cells per one liquid pool is 10cells/cmor more.

Manufacturing method for substrate on which nerve cells are arranged

A liquid discharging device includes: a recording head that has nozzles discharging liquid, and forms an image on a target surface with the liquid while performing scanning of the target surface for multiple times; a moving unit that moves the recording head in main-scanning direction while making the head discharge liquid, and moves the head in sub-scanning direction after the head has discharged liquid; a drive waveform applying unit that applies a drive waveform to the respective nozzles; a temperature detecting unit that detects temperature about the head; a correcting unit that corrects drive waveform based on detected temperature; and a control unit that, when temperature about the head changes from first temperature to second temperature, performs control in such a way that, during the multiple scans, use of second-type drive waveform corresponding to the second temperature gradually increases against use of first-type drive waveform corresponding to the first temperature.

Liquid discharging device and drive waveform control method

A liquid droplet ejecting head is disclosed, including a nozzle hole which ejects liquid droplets; an ejecting liquid chamber which is in communication with outside via the nozzle hole and which contains an ejecting liquid to be the liquid droplets; a pressure generating unit which generates pressure within the ejecting liquid chamber; a temperature detecting unit which detects temperature at a location at which is arranged a temperature measuring resistive body; and a pressure control unit which controls an output of the pressure generating unit based on detected results of the temperature detecting unit, wherein the pressure generating unit is configured to increase pressure within the ejecting liquid chamber, so that the ejecting liquid within the ejecting liquid chamber is ejected from the nozzle hole as the liquid droplets, and wherein the temperature measuring resistive body is arranged at the ejecting liquid chamber forming member.

Liquid droplet ejecting head, ink cartridge, and image forming apparatus

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Kanagawa, Japan

Yusuke Nonoyama