Canon Kabushiki Kaisha

Yoko Taira

Masayuki Ikegami

Akira Kuriyama

Yuhei Shimizu

Masashi Yamamoto

Tomoaki Ishii

Kenji Moribe

An aqueous ink for an ink jet including a silver particle that contains (i) a first organic monocarboxylic acid having a pKa of 4.60 or more and (ii) a second organic monocarboxylic acid having a pKa of less than 4.60 and having a carbon number of 2 or less.

Aqueous ink, ink cartridge and ink jet recording method

A method for ink-jet recording comprising recording an image on a recording medium using an ink-jet recording apparatus including a recording head equipped with a heat generation unit which generates thermal energy for discharging aqueous ink by discharging the aqueous ink from the recording head based on image data by action of the thermal energy, wherein the aqueous ink is discharged once by applying a single pulse waveform voltage to the heat generation unit in the recording, and wherein the aqueous ink includes silver particles.

Ink-jet recording method and ink-jet recording apparatus

An ink jet recording method including the steps of a first recording step for applying a first ink to a recording medium and a second recording step for applying a second ink to the recording medium so as to overlap at least a region provided with the first ink, wherein the first ink is an aqueous ink containing silver particles, the second ink is an aqueous ink containing a dye, a time difference between applications of the first ink and the second ink to the recording medium is 1 sec or more to 7,200 sec or less, and the dye is a predetermined dye.

Ink jet recording method and ink jet recording apparatus

An aqueous ink containing silver particles, a first reducing agent and a second reducing agent, wherein the first reducing agent is a compound that has an oxidation-reduction potential R(mV) satisfying R&#x3c;0, and the second reducing agent is a compound that has an oxidation-reduction potential R(mV) satisfying R&#x2265;0 and that is at least one selected from a group consisting of tertiary amines and polyhydric alcohols in which a plurality of hydroxy groups are included in one of two structures divided according to a position between any one of two adjacent carbon atoms of the longest carbon chain in the molecule.

An aqueous ink for inkjet printing contains silver particles having a particle size of 60 nm or less at a cumulative volume of 90%.

Growing community of inventors

Yokohama, Japan

Yoko Taira