Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method

Abstract

A recording ink containing at least a solid component which contains a colorant and a resin and is a solid at 25° C., a liquid component which has a higher boiling point than that of water and is a liquid at 25° C. and water, wherein the total content of the liquid component in the recording ink is 20% by mass or less, the total content of the solid component in the recording ink is 20% by mass or more, and the total content of a resin component in the solid component is 40% by mass to 95% by mass relative to a total amount of the solid component is provided.

1 . A recording ink, comprising: 
 a solid component,    a liquid component,    and water,    wherein the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 20% by mass or less; the total content of the solid component in the recording ink is 20% by mass or more; and the total content of resin components in the solid component is 40% by mass to 95% by mass relative to the total amount of the solid components.    
   
   
       2 . The recording ink according to  claim 1 , wherein the resin comprises resin fine particles having a glass transition temperature of 25° C. or less, and the volume average particle diameter of the resin fine particles is 10 nm to 1,000 nm.  
   
   
       3 . The recording ink according to  claim 1 , wherein the colorant is a pigment of a polymer emulsion type containing a color material which is water insoluble or hardly water soluble in polymer fine particles.  
   
   
       4 . The recording ink according to  claim 1 , wherein the liquid component comprises a surfactant, and the surfactant is at least one selected from fluorine surfactants and silicone surfactants.  
   
   
       5 . The recording ink according to  claim 1 , having a surface tension at 25° C. of 35 mN/m or less.  
   
   
       6 . An ink media set, comprising: 
 a recording ink, and    a recording medium,    wherein the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 20% by mass or less; the recording medium comprises a support, and a coating layer on at least one surface of the support; the transfer amount of purified water to the recording medium for a contact time of 100 ms is 2 mL/m 2  to 35 mL/m 2 ; and the transfer amount of purified water to the recording medium for a contact time of 400 ms is 3 mL/m 2  to 40 mL/m 2  measured using a dynamic scanning absorbing liquid meter.    
   
   
       7 . An ink media set, comprising: 
 a recording ink, and    a recording medium,    wherein the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 30% by mass or less; the total content of the solid component in the recording ink is 20% by mass or more; the total content of resin components in the solid component is 40% by mass to 95% by mass relative to the total amount of the solid components; the recording medium comprises a support, and a coating layer on at least one surface of the support; the transfer amount of purified water to the recording medium for a contact time of 100 ms is 2 mL/m 2  to 35 mL/m 2 ; and the transfer amount of purified water to the recording medium for a contact time of 400 ms is 3 mL/M 2  to 40 mL/m 2  measured using a dynamic scanning absorbing liquid meter.    
   
   
       8 . The ink media set according to  claim 7 , wherein the resin comprises resin fine particles having a glass transition temperature of 25° C. or less, and the volume average particle diameter of the resin fine particles is 10 nm to 1,000 nm.  
   
   
       9 . The ink media set according to  claim 7 , wherein the colorant is a pigment of a polymer emulsion type containing a color material which is water insoluble or hardly water soluble in polymer fine particles.  
   
   
       10 . An ink media set, comprising: 
 a recording ink, and    a recording medium,    wherein the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 30% by mass or less; the total content of the solid component in the recording ink is 20% by mass or more; the total content of resin components in the solid component is 40% by mass to 95% by mass relative to the total amount of the solid components; and the recording medium comprises a non-porous substrate.    
   
   
       11 . The ink media set according to  claim 10 , wherein the non-porous substrate is any one selected from plastic films, plastic laminate papers, plastic coat papers, glasses and metals.  
   
   
       12 . The ink media set according to  claim 10 , wherein the non-porous substrate is a polyester film.  
   
   
       13 . The ink media set according to  claim 10 , wherein the resin comprises resin fine particles having a glass transition temperature of 25° C. or less, and the volume average particle diameter of the resin fine particles is 10 nm to 1,000 nm.  
   
   
       14 . The ink media set according to  claim 10 , wherein the colorant is a pigment of a polymer emulsion type containing a color material which is water insoluble or hardly water soluble in polymer fine particles.  
   
   
       15 . An ink cartridge, housing a recording ink in a container, 
 wherein the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 30% by mass or less; the total content of the solid component in the recording ink is 20% by mass or more; and the total content of resin components in the solid component is 40% by mass to 95% by mass relative to the total amount of the solid components.    
   
   
       16 . A moisturizing agent, comprising one selected from (1) a liquid medium composed of water, (2) a liquid medium whose main component is water, (3) a liquid medium whose main components are water and a liquid component which has a higher boiling point than that of water and is a liquid at 25° C., and (4) a liquid medium containing the same components as a recording ink which comprises at least a solid component, a liquid component, and water, the solid component comprises a colorant and a resin and is a solid at 25° C., the liquid component has a higher boiling point than that of water and is a liquid at 25° C., the total content of the liquid component is 20% by mass or less; and the content of the solid component being a solid at 25° C. in the liquid medium is less than that of the recording ink.  
   
   
       17 . An inkjet recording method, comprising: 
 flying a recording ink in an ink media set by applying an impulse to the recording ink to form an image on a recording medium in the ink media set,    wherein the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 30% by mass or less; the total content of the solid component in the recording ink is 20% by mass or more; the total content of resin components in the solid component is 40% by mass to 95% by mass relative to the total amount of the solid components; the recording medium comprises a support, and a coating layer on at least one surface of the support; the transfer amount of purified water to the recording medium for a contact time of 100 ms is 2 mL/m 2  to 35 mL/m 2 ; and the transfer amount of purified water to the recording medium for a contact time of 400 ms is 3 mL/m 2  to 40 mL/m 2  measured using a dynamic scanning absorbing liquid meter.    
   
   
       18 . The inkjet recording method according to  claim 17 , wherein after recording the image on the recording medium, the image is dried by at least either heating or sending air.  
   
   
       19 . An inkjet recording method, comprising 
 flying a recording ink in an ink media set by applying an impulse to the recording ink to form an image on a recording medium in the ink media set,    wherein the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 30% by mass or less; the total content of the solid component in the recording ink is 20% by mass or more; the total content of resin components in the solid component is 40% by mass to 95% by mass relative to the total amount of the solid components; and the recording medium comprises a non-porous substrate.    
   
   
       20 . The inkjet recording method according to  claim 19 , wherein after recording the image on the recording medium, the image is dried by at least either heating or sending air.  
   
   
       21 . An inkjet recording method, comprising: 
 replacing a recording ink with a moisturizing agent when inkjet recording is stopped for a long time, and    replacing the moisturizing agent with the recording ink when inkjet recording is restarted,    wherein the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 20% by mass or less; the moisturizing agent comprises at least one selected from (1) a liquid medium composed of water, (2) a liquid medium whose main component is water, (3) a liquid medium whose main components are water and a liquid component which has a higher boiling point than that of water and is a liquid at 25° C., and (4) a liquid medium containing the same components as a recording ink which comprises at least a solid component, a liquid component, and water, the solid component comprises a colorant and a resin and is a solid at 25° C., the liquid component has a higher boiling point than that of water and is a liquid at 25° C., the total content of the liquid component is 20% by mass or less; and the content of the solid component being a solid at 25° C. in the liquid medium is less than that of the recording ink.    
   
   
       22 . An inkjet recording method, comprising: 
 supplying a moisturizing agent to a capping unit which is configured to cap the nozzle of a recording head when inkjet recording is stopped for a long time,    wherein the moisturizing agent comprises at least one selected from (1) a liquid medium composed of water, (2) a liquid medium whose main component is water, (3) a liquid medium whose main components are water and a liquid component which has a higher boiling point than that of water and is a liquid at 25° C., and (4) a liquid medium containing the same components as a recording ink which comprises at least a solid component, a liquid component, and water, the solid component comprises a colorant and a resin and is a solid at 25° C., the liquid component has a higher boiling point than that of water and is a liquid at 25° C., the total content of the liquid component is 20% by mass or less; and the content of the solid component being a solid at 25° C. in the liquid medium is less than that of the recording ink.    
   
   
       23 . An ink media set, comprising: 
 a recording ink, and    a recording medium,    wherein the recording ink comprises at least a pigment of a polymer emulsion type containing a color material which is water insoluble or hardly water soluble in polymer fine particles, water dispersible resin fine particles, and a wetting agent; the total solid content of the pigment of the polymer emulsion type and the water dispersible resin fine particles is 20% by mass or more; the content of the wetting agent is 20% by mass or more; the transfer amount of purified water to the recording medium for a contact time of 100 ms is 2 mL/m 2  to 35 mL/m 2 , and the transfer amount of purified water to the recording medium for a contact time of 400 ms measured using a dynamic scanning absorbing liquid meter is 3 mL/m 2  to 40 mL/m 2 .    
   
   
       24 . An inkjet recording method, comprising: 
 flying a recording ink in an ink media set by applying an impulse to the recording ink to form an image on a recording medium in the ink media set, and    drying the image formed on the recording medium,    wherein the ink media set comprises a recording ink, and a recording medium; the recording ink comprises at least a pigment of a polymer emulsion type containing a color material which is water insoluble or hardly water soluble in polymer fine particles, water dispersible resin fine particles, and a wetting agent; the total solid content of the pigment of the polymer emulsion type and the water dispersible resin fine particles is 20% by mass or more; the content of the wetting agent is 20% by mass or more; the transfer amount of purified water to the recording medium for a contact time of 100 ms is 2 mL/M 2  to 35 mL/m 2 , and the transfer amount of purified water to the recording medium for a contact time of 400 ms measured using a dynamic scanning absorbing liquid meter is 3 mL/m 2  to 40 mL/m 2 .    
   
   
       25 . An ink media set, comprising: 
 a recording ink, and    a recording medium,    wherein the recording ink comprises at least a colorant, a water dispersible resin, and a wetting agent; the total solid content of the recording ink is 20% by mass or more; the content of the wetting agent is 20% by mass or more; the wetting agent contains glycerine alone, or the content of the glycerine in the wetting agent is 80% by mass or more; the transfer amount of purified water to the recording medium for a contact time of 100 ms is 2 mL/m 2  to 35 mL/M 2 , and the transfer amount of purified water to the recording medium for a contact time of 400 ms measured using a dynamic scanning absorbing liquid meter is 3 mL/m 2  to 40 mL/m 2 .    
   
   
       26 . An inkjet recording method, comprising: 
 flying a recording ink in an ink media set by applying an impulse to the recording ink to form an image on a recording medium in the ink media set, and    drying the image formed on the recording medium,    wherein the ink media set comprises a recording ink, and a recording medium; the recording ink comprises at least a colorant, a water dispersible resin, and a wetting agent; the total solid content of the recording ink is 20% by mass or more; the content of the wetting agent is 20% by mass or more; the wetting agent contains glycerine alone, or the content of the glycerine in the wetting agent is 80% by mass or more; the transfer amount of purified water to the recording medium for a contact time of 100 ms is 2 mL/m 2  to 35 mL/m 2 , and the transfer amount of purified water to the recording medium for a contact time of 400 ms measured using a dynamic scanning absorbing liquid meter is 3 mL/m 2  to 40 mL/m 2 .    
   
   
       27 . An ink record, comprising: 
 an image formed on a recording medium using a recording ink,    wherein the recording medium comprises a support, and a coating layer on at least one surface of the support; the transfer amount of purified water to the recording medium for a contact time of 100 ms is 2 mL/m 2  to 35 mL/m 2 ; the transfer amount of purified water to the recording medium for a contact time of 400 ms is 3 mL/m 2  to 40 mL/m 2  measured using a dynamic scanning absorbing liquid meter; the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 30% by mass or less; the total content of the solid component in the recording ink is 20% by mass or more; and the total content of resin components in the solid component is 40% by mass to 95% by mass relative to the total amount of the solid components.    
   
   
       28 . An ink record, comprising: 
 an image formed on a recording medium using a recording ink,    wherein the recording medium comprises a non-porous substrate; the recording ink comprises at least a solid component, a liquid component, and water; the solid component comprises a colorant and a resin and is a solid at 25° C.; the liquid component has a higher boiling point than that of water and is a liquid at 25° C.; the total content of the liquid component in the recording ink is 30% by mass or less; the total content of the solid component in the recording ink is 20% by mass or more; and the total content of resin components in the solid component is 40% by mass to 95% by mass relative to the total amount of the solid components.    
   
   
       29 . The ink record according to  claim 28 , wherein the recording medium is a polyether film.