Liquid jet apparatus using a fine particle dispersion liquid composition
AssigneeRicoh Company, Ltd.
InventorTakuro Sekiya
Life of this patent
Estimating the term…
Abstract
In an apparatus producing a high-quality and high-resolution image having high water and light resistances with an orifice having a diameter less than φ25 μm (less than 500 μm2 in terms of cross-sectional area of the orifice) by use of a fine particle dispersion recording composition, nozzle clogging can be prevented. A recording is accomplished by a liquid jet recording apparatus for ejecting a recording composition including dispersed fine particles from a small orifice toward a receiving medium, wherein a size Dp of the fine particles and a diameter D0 of the small orifice are determined by a relationship 0.001≦Dp/D0≦0.01.
Claims50
1-25. (canceled)
An inkjet recording apparatus for ejecting ink from at least one orifice toward a receiving medium so as to cause the ink to be attached on the receiving medium, the ink containing pigments dispersed therein,
- wherein the orifice has a diameter equal to or less than 25 μm or an opening less than 500 μm2, and
- each of the pigments has a size Dp equal to or larger than 0.03 μm so that the pigments are dispersed in a stable state, and the size Dp is determined by a relationship Dp/D0≦0.01 so as to prevent clogging of the orifice, wherein D0 represents a diameter of the orifice.
An inkjet recording apparatus for ejecting ink from at least one orifice toward a receiving medium so as to cause the ink to be attached on the receiving medium, the ink containing pigments dispersed therein, wherein:
- the orifice has a diameter equal to or less than 25 μm or an opening less than 500 μm2;
- a content of the pigments in the ink is in the range from 2 to 10% by weight and a solid content of the ink including the pigments is less than 15% by weight;
- and
- each of the pigments has a size Dp equal to or larger than 0.03 μm so that the pigments are dispersed in a stable state, and the size Dp is determined by a relationship Dp/D0≦0.01 so as to prevent clogging of the orifice, wherein D0 represents a diameter of the orifice.
An inkjet recording apparatus for ejecting ink from at least one orifice toward a receiving medium on demand so as to cause the ink to be attached on the receiving medium, pigments having a size Dp being dispersed in the ink, the at least one orifice being a tip of a passageway, wherein:
- the orifice has a diameter equal to or less than 25 μm or an opening less than 500 μm2;
- and
- Dp is determined by a relationship:
- Dp/t≦0.01
- wherein t is a length of the at least one orifice having a uniform cross-sectional area at an outlet portion.
Ink used for an inkjet recording apparatus, which ejects the ink from at least one orifice toward a receiving medium by pressure, so as to cause the ink to be attached to the receiving medium by applying droplets of the ink to the receiving medium, the orifice having a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- the ink is formed by dispersing pigments into a liquid;
- and
- each of the pigments has a size Dp equal to or larger than 0.03 μm so that the pigments are dispersed in a stable state, and the size Dp is determined by a relationship Dp/D0≦0.01 so as to prevent clogging of the orifice, wherein D0 represents a diameter of the orifice.
Ink used for an inkjet recording apparatus, which ejects the ink from at least one orifice toward a receiving medium by pressure, so as to cause the ink to be attached on the receiving medium by applying droplets of the ink to the receiving medium, the orifice having a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- the ink contains pigments dispersed into a liquid in the range from 2 to 10% by weight;
- a solid content of the ink including the pigments is less than 15% by weight;
- and
- each of the pigments has a size Dp equal to or larger than 0.03 μm so that the pigments are dispersed in a stable state, and the size Dp is determined by a relationship Dp/D0≦0.01 so as to prevent clogging of the orifice, wherein D0 represents a diameter of the orifice.
Ink used for an inkjet recording apparatus, which ejects the ink from at least one orifice toward a receiving medium on demand by pressure, so as to cause the ink to be attached to the receiving medium by applying droplets of the ink to the receiving medium, the orifice having a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- pigments having a size Dp are dispersed in the ink;
- and
- each of the at least one orifice is a tip of a passageway or formed at an end of the passageway, and Dp is determined by a relationship
- Dp/t≦0.01
- wherein t is a length of the at least one orifice having a uniform cross-sectional area at an outlet portion.
A receiving medium used for an inkjet recording apparatus, which ejects ink from at least one orifice toward the receiving medium by pressure, so as to cause the ink to be attached to the receiving medium by applying droplets of the ink to the receiving medium, the orifice having a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- the ink is formed by dispersing pigments into a liquid;
- and
- each of the pigments has a size Dp equal to or larger than 0.03 μm so that the pigments are dispersed in a stable state, and the size Dp is determined by a relationship Dp/D0≦0.01 so as to prevent clogging of the orifice, wherein D0 represents a diameter of the orifice.
A receiving medium used for an inkjet recording apparatus, which ejects ink from at least one orifice toward the receiving medium by pressure, so as to cause the ink to be attached on the receiving medium by applying droplets of the ink to the receiving medium, the orifice having a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- the ink contains pigments dispersed into a liquid in the range from 2 to 10% by weight;
- a solid content of the ink including the pigments is less than 15% by weight;
- and
- each of the pigments has a size Dp equal to or larger than 0.03 μm so that the pigments are dispersed in a stable state, and the size Dp is determined by a relationship Dp/D0≦0.01 so as to prevent clogging of the orifice, wherein D0 represents a diameter of the orifice.
A receiving medium used for an inkjet recording apparatus, which ejects ink from at least one orifice toward a receiving medium on demand by pressure, so as to cause the ink to be attached to the receiving medium by applying droplets of the ink to the receiving medium, the orifice having a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- pigments having a size Dp are dispersed in the ink;
- and
- each of the at least one orifice is a tip of a passageway or formed at an end of the passageway, and Dp is determined by a relationship
- Dp/t≦0.01
- wherein t is a length of the at least one orifice having a uniform cross-sectional area at an outlet portion.
An inkjet recording apparatus for ejecting ink from at least one orifice toward a receiving medium so as to cause the ink to be attached on the receiving medium, the ink containing pigments dispersed therein, wherein:
- the orifice is formed of metal and has a diameter equal to or less than 25 μm or an opening less than 500 μm2;
- and
- the metal has a hardness of Rockwell M140 or more.
Ink used for an inkjet recording apparatus, which ejects a liquid from at least one orifice toward a receiving medium by pressure, so as to cause the ink to be attached to the receiving medium by applying droplets of the ink to the receiving medium, the at least one orifice being formed of metal having a hardness of Rockwell M140 or more and having a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- pigments are dispersed in the ink, and each of the pigments has a diameter ranging from 0.02 μm to 0.6 μm.
A receiving medium used for an inkjet recording apparatus, which ejects ink from at least one orifice toward the receiving medium by pressure, so as to cause the ink to be attached to the receiving medium by applying droplets of the ink to the receiving medium, the at least one orifice being formed of metal having a hardness of Rockwell M140 or more and having a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- pigments are dispersed in the ink, and each of the pigments has a diameter ranging from 0.02 μm to 0.6 μm.
An inkjet recording apparatus for ejecting ink from at least one orifice toward a receiving medium, the ink containing pigments dispersed therein, wherein:
- the orifice is formed of a resin material and has a diameter equal to or less than 25 μm or an opening less than 500 μm2;
- and
- the resin material has a hardness of Rockwell M65 to M120.
Ink used for an inkjet recording apparatus, which ejects a liquid from at least one orifice toward a receiving medium by pressure, so as to cause the ink to be attached to the receiving medium by applying droplets of the ink to the receiving medium, the orifice is formed of a resin material and has a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- the resin material has a hardness of Rockwell M65 to M120;
- and
- pigments are dispersed in the ink, and each of the pigments has a diameter ranging from 0.02 μm to 0.6 μm.
A receiving medium used for an inkjet recording apparatus, which ejects ink from at least one orifice toward the receiving medium by pressure, so as to cause the ink to be attached to the receiving medium by applying droplets of the ink to the receiving medium, the orifice is formed of a resin material and has a diameter equal to or less than 25 μm or an opening less than 500 μm2, wherein:
- the resin material has a hardness of Rockwell M65 to M120;
- and
- pigments are dispersed in the ink, and each of the pigments has a diameter ranging from 0.02 μm to 0.6 μm.
Dependencies are inferred from the claim text.