Liquid jet recording apparatus using a fine particle dispersion recording 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 Do of the small orifice are determined by a relationship 0.001≦Dp/Do≦0.01.
Claims72
A liquid jet recording head for ejecting a recording composition from orifices toward a receiving medium so as to accomplish a recording, said recording composition formed by dispersing fine particles, wherein:
- said orifices have a diameter equal to or less than 25 μm;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.001≦Dp/Do≦0.01
- wherein Do represents a diameter of said orifices.
A liquid jet recording head for ejecting a recording composition from orifices toward a receiving medium so as to accomplish a recording, said recording composition formed by dispersing fine particles, wherein:
- said orifices have a diameter equal to or less than 25 μm;
- and
- a content of said fine particles in said recording composition is in the range of 2 to 10% by weight and a solid content of said recording composition including said fine particles is less than 15% by weight.
A liquid jet recording head for ejecting a recording composition from orifices toward a receiving medium so as to accomplish a recording, fine particles having a size Dp being dispersed in said recording composition, each of said orifices being a tip of a liquid passageway, wherein:
- said orifices have 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 orifices having a uniform cross-sectional area at an outlet portion.
A liquid jet recording head for ejecting a recording composition from orifices toward a receiving medium so as to accomplish a recording, said recording composition formed by dispersing fine particles, wherein:
- said orifices are formed of resin material and have a diameter equal to or less than 25 μm;
- and
- said resin material has a hardness of Rockwell M65 to M120.
A thermal inkjet recording apparatus for ejecting a recording liquid from orifices toward a receiving medium so as to accomplish a recording by applying droplets of the recording liquid to the receiving medium, said recording liquid formed by dispersing fine particles in a liquid, wherein:
- said orifices have a diameter equal to or less than 25 μm;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.001≦Dp/Do≦0.01
- wherein Do represents a diameter of said orifices.
A thermal inkjet recording apparatus for ejecting a recording liquid from orifices toward a receiving medium so as to accomplish a recording by applying droplets of the recording liquid to the receiving medium, said recording liquid formed by dispersing fine particles in a liquid, wherein:
- said orifices have a diameter equal to or less than 25 μm;
- and
- a content of said fine particles in said recording liquid is in the range of 2 to 10% by weight and a solid content of said recording liquid including said fine particles is less than 15% by weight.
The thermal inkjet recording apparatus as claimed in claim 38, wherein a distance between said orifices and a surface of the receiving medium is equal to or less than 100 t, and said recording liquid is ejected from said orifices in a direction of gravity approximately.
A thermal inkjet recording apparatus for ejecting a recording liquid from orifices toward a receiving medium so as to accomplish a recording by applying droplets of the recording liquid by applying droplets of the recording liquid to the receiving medium, fine particles having a size Dp being dispersed in said recording liquid, each of said orifices being a tip of liquid passageway or formed at an end of said passageway, wherein:
- said orifices have 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 orifices having a uniform cross-sectional area at an outlet portion.
The thermal inkjet recording apparatus as claimed in claim 44, wherein said recording liquid reservoir part is separable according to a kind of the recording liquid.
A thermal inkjet recording apparatus for ejecting a recording liquid from orifices toward a receiving medium so as to accomplish a recording by applying droplets of the recording liquid to the receiving medium, said recording liquid formed by dispersing fine particles in a liquid, wherein:
- said orifices are formed of resin material and have a diameter equal to or less than 25 μm;
- and
- said resin material has hardness of Rockwell M65 to M120.
A thermal inkjet recording head for ejecting a recording liquid from orifices toward a receiving medium so as to accomplish a recording by applying droplets of the recording liquid to the receiving medium, said recording liquid formed by dispersing fine particles in a liquid, wherein:
- said orifices have a diameter equal to or less than 25 μm;
- and
- each of said fine particles has a size Dp determined by a relationship
- 0.001≦Dp/Do≦0.01
- wherein Do represents a diameter of said orifices.
A thermal inkjet recording head for ejecting a recording liquid from orifices toward a receiving medium so as to accomplish a recording by applying droplets of the recording liquid to the receiving medium, said recording liquid formed by dispersing fine particles in a liquid, wherein:
- said orifices have a diameter equal to or less than 25 μm;
- and
- a content of said fine particles in said recording liquid is in the range of 2 to 10% by weight and a solid content of said recording liquid including said fine particles is less than 15% by weight.
The thermal inkjet recording head as claimed in claim 62, wherein a distance between said orifices and a surface of the receiving medium is equal to or less than 100 t, and said recording liquid is ejected from said orifices in a direction of gravity approximately.
A thermal inkjet recording head for ejecting a recording liquid from orifices toward a receiving medium so as to accomplish a recording by applying droplets of the recording liquid by applying droplets of the recording liquid to the receiving medium, fine particles having a size Dp being dispersed in said recording liquid, each of said orifices being a tip of liquid passageway or formed at an end of said passageway, wherein:
- said orifices have 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 orifices having a uniform cross-sectional area at an outlet portion.
A thermal inkjet recording head for ejecting a recording liquid from orifices toward a receiving medium so as to accomplish a recording by applying droplets of the recording liquid to the receiving medium, said recording liquid formed by dispersing fine particles in a liquid, wherein:
- said orifices are formed of resin material and have a diameter equal to or less than 25 μm;
- and
- said resin material has hardness of Rockwell M65 to M120.
Dependencies are inferred from the claim text.