Sharp Kabushiki Kaisha Corporation

Ichiro Fujii

Hiroaki Nakaya

Takanori Kamoto

Masanori Kinomoto

Hiromi Nakatsu

Kiyofumi Morimoto

Kazuhiro Emoto

Masato Miyauchi

Kaori Dakeshita

Seita Suzuki

Seila Suzuki

An object of the present invention is to provide an ink composition having a high permeability as an inkjet ink and permitting high quality image printing even with a high speed. To achieve the above object, the present invention provides an ink composition including: wherein m and n each are an integer of 0-11; m+n is an integer of 9-11; x is an integer of 5-9; and y is a number between 2.5-5.

Ink composition, ink set using same, recording method, ink head and recorded image

The present invention provides ink for inkjet recording containing ethylene glycol base ether and/or monovalent alkyl alcohol, a surfactant and a coloring agent, the ink showing the following characteristics when 2 &#x3bc;l of the ink is dropped on a piece of ordinary paper having smoothness of 100 sec or lower:

Ink for inkjet recording

An image recording apparatus based on a color ink-jet scheme provided with an ink set consisting of one or more than one colors of inks and a black ink and an ink-jet printing unit, wherein the initial contact angles &thgr; of two colors of inks, namely, a color ink and a black ink, fall within the range from 30 to 80&deg;, the contact angle variation Xa of the ink A as obtained by the dynamic liquid absorption measurement after the elapsed time of 1 second falls within the range &minus;70<Xa<&minus;10(&deg;), the dot area ratio Ya of the ink A after the elapsed time of ta seconds-falls in the range 1.5<Ya, the contact angle variation Xb of the ink B as obtained by the dynamic liquid absorption measurement after the elapsed time of 1 second falls within the range &minus;15<Xb<0(&deg;), and the dot area ratio Yb of the ink B after the elapsed time of tb seconds falls within the range 1.0<Yb<1.7, where printing is made first with the ink A and subsequently with the ink B.

Image recording apparatus and recording method based on color ink jet scheme and ink set

A crystalline titanyl phthalocyanine having diffraction peaks at least at 7.4.degree., 9.4.degree., 9.7.degree. and 27.3.degree. of Bragg angle (20.+-.0.2.degree.) in X-ray diffraction pattern with a doublet peak at 9.4.degree. or 9.7.degree., one of the diffraction peaks at 9.4.degree. and 9.7.degree. being the maximum.

Crystalline titanyl phthalocyanines and use thereof

An organic electroluminescent element comprising a substrate are stacked layers thereon of, a positive electrode, a holeinjected carrier layer, a luminescent layer and a negative electrode and optionally an electron-injected carrier layer formed between the luminescent layer and the negative electrode, wherein the hole-injected carrier layer comprising a bis-enamine compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are, the same or different, a lower alkyl group or an optionally substituted aryl or heterocyclic group, or alternatively, R.sub.1 and R.sub.2 together with the carbon atom to which they are bonded may form a benzocycloalkyl group, the benzene ring being optionally substituted by a substituent or substituents selected from the group consisting of a halogen atom, a lower alkyl group and a lower alkoxy group; R.sub.3 is an optionally substituted aryl or heterocyclic group; and Ar is a methylene group, a vinylene group or an optionally substituted C.sub.6-20 arylene or heterocyclediyl group.

Growing community of inventors

Gose, Japan

Ichiro Fujii