Seiko Epson Corporation

Yoshiyuki Suzuki

Masaaki Ando

Keitaro Nakano

Junhua Zhang

Hiroshi Takiguchi

An ultraviolet-curable composition is discharged with an ink jet method and includes a polymerizable compound; a metal powder; and a thixotropy suppressing agent, in which a relationship of &#x3b7;2&#x2212;&#x3b7;1&#x2264;3 is satisfied between a viscosity &#x3b7;1 [mPa s] at a shearing speed of 1000 secand a viscosity &#x3b7;2 [mPa s] which is determined by measuring in a state where the shearing speed is 10 secafter continuing to add shearing stress for 10 minutes at the shearing speed of 1000 sec.

Ultraviolet-curable composition and recorded matter

A liquid ejecting apparatus including: a plurality of pressure chambers communicating with a plurality of nozzles respectively; and a plurality of liquid ejecting heads having a common liquid chamber configured to supply liquid common to the plurality of pressure chambers, wherein each of the liquid ejecting heads includes a liquid supply channel communicating with the common liquid chamber and supplying liquid from the liquid storage tank toward the common liquid chamber by the liquid feeding unit and a liquid discharge channel communicating with the common liquid chamber and discharging the liquid from the communicating chamber toward the liquid storage tank by the liquid feeding unit, and the directions of flows of the liquid in the common liquid chamber flowing from the liquid supply channels through the common liquid chamber toward the liquid discharge channels are opposite from each other between the adjacent liquid ejecting heads.

Liquid ejecting apparatus

Provided is a liquid ejecting method, including ejecting a liquid from a liquid ejecting head, wherein: the viscosity of the liquid is in a range from 6 mPa&#xb7;s to 15 mPa&#xb7;s, the liquid ejecting head includes: nozzles which eject the liquid; a pressure chamber which applies a pressure variation to the liquid in order to eject the liquid from the nozzles; and a supply unit which communicates with the pressure chamber and supplies the liquid to the pressure chamber, the volume of the supply unit is more than &#x2155; of the volume of the pressure chamber and is less than &#xbd; of the volume of the pressure chamber, and the channel length of the pressure chamber is equal to or more than the channel length of the supply unit and is equal to or less than twice of the channel length of the supply unit.

Method, head and apparatus for ejecting viscous liquids

A driving signal includes an ejection driving pulse having an expansion element and a constriction element, and a non-ejection driving pulse having an expansion element and a holding element and a constriction element. The length of time from the end of the constriction element in the ejection driving pulse to the beginning of the expansion element in the non-ejection driving pulse is taken as t; the lengths of time of the expansion element, holding element, and constriction element in the non-ejection driving pulse are taken as a, b, and c, respectively; and the inherent vibration cycle of the liquid within the pressurizing chamber is taken as Tc. t, a, b, and c are within the ranges defined by the following equations:/42&#x2003;&#x2003;(1)(5/8)&#x2212;&#x2266;(3/4)&#x2212;&#x2003;&#x2003;(2)&#x2003;&#x2003;(3).

Liquid ejecting apparatus, and control method thereof, capable of controlling residual vibrations following the ejection of liquid

A liquid ejecting method includes ejecting a liquid through a liquid ejecting head. Viscosity of the liquid falls within a range from 6 mPa&#xb7;s to 15 mPa&#xb7;s. The liquid ejecting head includes a nozzle that ejects the liquid, a pressure compartment that causes a change in the pressure of the liquid to eject the liquid through the nozzle, and a supply unit that communicates with the pressure compartment and supplies the liquid to the pressure compartment. A channel flow resistance of the supply unit ranges from equal to or higher than a channel flow resistance of the pressure compartment to equal to or lower than twice the channel flow resistance of the pressure compartment. A channel length of the pressure compartment ranges from equal to or longer than a channel length of the supply unit to equal to or shorter than twice the channel length of the supply unit.

Method, head, and apparatus for ejecting liquid

Provided is a liquid ejecting method, comprising ejecting a liquid from a liquid ejecting head, wherein: the viscosity of the liquid is in a range from 6 mPa&#xb7;s to 15 mPa&#xb7;s, the liquid ejecting head includes: nozzles which eject the liquid; a pressure chamber which applies a pressure variation to the liquid in order to eject the liquid from the nozzles; and a supply unit which communicates with the pressure chamber and supplies the liquid to the pressure chamber, the cross-sectional area of the supply unit is in a range from &#x2153; of the cross-sectional area of the pressure chamber to the cross-sectional area of the pressure chamber, and the channel length of the pressure chamber is equal to or more than the channel length of the supply unit and is equal to or less than twice of the channel length of the supply unit.

Growing community of inventors

Matsumoto, Japan

Yoshiyuki Suzuki