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 0.003≦Dp/D0≦0.01.
Claims43
An apparatus for ejecting a liquid from at least one orifice toward a receiving medium so as to cause said liquid to be attached on said receiving medium, said liquid containing fine particles dispersed therein, wherein said at least one orifice has a diameter equal to or less than 25 μm;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.003≦Dp/Do≦0.01
- wherein D0 represents a diameter of said at least one orifice.
An apparatus for ejecting a liquid from at least one orifice toward a receiving medium so as to cause said liquid to be attached on said receiving medium, said liquid containing fine particles dispersed therein, wherein:
- said at least one orifice has a diameter equal to or less than 25 μm;
- a content of said fine particles in said liquid is in the range of 2 to 10% by weight and a solid content of said liquid including said fine particles is less than 15% by weight;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.003≦Dp/Do≦0.01
- wherein D0 represents a diameter of said at least one orifice.
An apparatus for ejecting a liquid from at least one orifice toward a receiving medium on demand so as to cause said liquid to be attached on said receiving medium, fine particles having a size Dp being dispersed in said liquid, said at least one orifice being a tip of a passageway, wherein:
- said at least one crifice has a diameter equal to or less than 25 μm;
- and
- Dp is determined by a relationship:
- Dp/t≦0.01
- wherein t is a length of said at least one orifice having a uniform cross-sectional area at an outlet portion.
A liquid used for an apparatus, which ejects the liquid from at least one orifice toward a receiving medium by pressure, so as to cause the liquid to be attached to the receiving medium by applying droplets of the liquid to the receiving medium, said at least one orifice having a diameter equal to or less than 25 μm, wherein:
- said liquid is formed by dispersing fine particles into a liquid;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.003≦Dp/Do≦0.01
- wherein D0 represents a diameter of said at least one orifice.
A liquid used for an apparatus, which ejects the liquid from at least one orifice toward a receiving medium by pressure, so as to cause the liquid to be attached on the receiving medium by applying droplets of the liquid to the receiving medium, said at least one orifice having a diameter equal to or less than 25 μm, wherein:
- said liquid contains fine particles dispersed into a liquid in the range of 2 to 10% by weight;
- a solid content of said liquid including said fine particles is less than 15% by weight;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.003≦Dp/Do≦0.01
- wherein D0 represents a diameter of said at least one orifice.
A liquid used for an apparatus, which ejects the liquid from at least one orifice toward a receiving medium on demand by pressure, so as to cause the liquid to be attached to the receiving medium by applying droplets of the liquid to the receiving medium, said at least one orifice having a diameter equal to or less than 25 μm, wherein:
- fine particles having a size Dp are dispersed in said liquid;
- and
- each of said at least one orifice is a tip of a passageway or formed at an end of said passageway, and Dp is determined by a relationship
- Dp/t≦0.01
- wherein t is a length of said at least one orifice having a uniform cross-sectional area at an outlet portion.
A receiving medium used for an apparatus, which ejects a liquid from at least one orifice toward the receiving medium by pressure, so as to cause the liquid to be attached to the receiving medium by applying droplets of the liquid to the receiving medium, said at least one orifice having a diameter equal to or less than 25 μm, wherein:
- said liquid is formed by dispersing fine particles into a liquid;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.003≦Dp/Do≦0.01
- wherein D0 represents a diameter of said at least one orifice.
A receiving medium used for an apparatus, which ejects a liquid from at least one orifice toward the receiving medium by pressure, so as to cause the liquid to be attached on the receiving medium by applying droplets of the liquid to the receiving medium, said at least one orifice having a diameter equal to or less than 25 μm, wherein:
- said liquid contains fine particles dispersed into a liquid in the range of 2 to 10% by weight;
- a solid content of said liquid including said fine particles is less than 15% by weight;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.003≦Dp/Do≦0.01
- wherein D0 represents a diameter of said at least one orifice.
A receiving medium used for an apparatus, which ejects a liquid from at least one orifice toward a receiving medium on demand by pressure, so as to cause the liquid to be attached to the receiving medium by applying droplets of the liquid to the receiving medium, said at least one orifice having a diameter equal to or less than 25 μm, wherein:
- fine particles having a size Dp are dispersed in said liquid;
- and
- each of said at least one orifice is a tip of a passageway or formed at an end of said passageway, and Dp is detennined by a relationship
- Dp/t≦0.01
- wherein t is a length of said at least one orifice having a uniform cross-sectional area at an outlet portion.
An apparatus for ejecting a liquid from at least one orifice toward a receiving medium so as to cause said liquid to be attached on said receiving medium, said liquid containing fine particles dispersed therein, wherein:
- said at least one orifice is formed of metal and has a diameter equal to or less than 25 μm;
- and
- said metal has a hardness of Rockwell M140 or more.
A liquid used for an apparatus, which ejects a liquid from at least one orifice toward a receiving medium by pressure, so as to cause the liquid to be attached to the receiving medium by applying droplets of the liquid to the receiving medium, said 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, wherein:
- fine particles are dispersed in said liquid, and each of said fine particles has a diameter ranging from 0.02 μm to 0.6 μm.
A receiving medium used for an apparatus, which ejects a liquid from at least one orifice toward the receiving medium by pressure, so as to cause the liquid to be attached to the receiving medium by applying droplets of the liquid to the receiving medium, said 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, wherein:
- fine particles are dispersed in said liquid, and each of said fine particles has a diameter ranging from 0.02 μm to 0.6 μm.
Dependencies are inferred from the claim text.