CA2217525A1 - An ink jet receptive coating composition - Google Patents
An ink jet receptive coating composition Download PDFInfo
- Publication number
- CA2217525A1 CA2217525A1 CA 2217525 CA2217525A CA2217525A1 CA 2217525 A1 CA2217525 A1 CA 2217525A1 CA 2217525 CA2217525 CA 2217525 CA 2217525 A CA2217525 A CA 2217525A CA 2217525 A1 CA2217525 A1 CA 2217525A1
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- CA
- Canada
- Prior art keywords
- ink jet
- ink
- jet recording
- coating composition
- methylcellulose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
- B41M5/508—Supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5236—Macromolecular coatings characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
Abstract
Ink jet ink receptive coating compositions for use in preparing ink jet recording media are provided. The coatings contain a cellulose ether and an alumina particulate. Preferably, the coating compositions contain about 50% to about 95% of the cellulose ether on a weight/weight basis, based on the amount of solids in the coating composition. Exemplary cellulose ethers that may be used in the coating compositions include methylcellulose and hydroxyalkyl methylcellulose.
Preferably, the cellulose ether has a hydroxyalkyl content of 0% to about 32% and a methoxy content of about 16% to about 32%. With the ink jet ink receptive coating compositions, one can provide ink jet recording media that possess the combined properties of (i) a low level of ink cracking, (ii) good optical density, and (iii) a good dry time, when printed in an ink jet printing process.
Preferably, the cellulose ether has a hydroxyalkyl content of 0% to about 32% and a methoxy content of about 16% to about 32%. With the ink jet ink receptive coating compositions, one can provide ink jet recording media that possess the combined properties of (i) a low level of ink cracking, (ii) good optical density, and (iii) a good dry time, when printed in an ink jet printing process.
Description
. CA 022l7~2~ l997-l0-06 ~ ,, AN INR JET INK RE~llv~ COATING COMPOSITION
Field of the Invention The invention pertains to an ink jet ink receptive coating composition, and to an ink jet recording media prepared therewith by applying said coating composition to a surface of a suitable base substrate.
Bac~4~ d of the Invention Ink jet ink receptive coating layers used for ink jet recording media have to meet a number of performance requirements. These requirements include dry time, color density, resolution, tack, color fidelity and lightfastness, as well as cost. There are many materials, both organic and inorganic, that have been proposed for this application. Among them, cellulose derivatives and alumina particulates have shown promising performance, and cellulose derivatives have been used alone or in combination with an inorganic pigment other than alumina For example, U.S. Patent 4,555,437 describes a hydroxyethyl cellulose coating, and U.S. Patent 4,575,465 describes a hydroxyprop~yl cellulose coating.
Alumina has been extensively used as a filler or pigment for ink jet recording media. For example, U.S.
Patent 4,780,3S6 discloses a two-layer coating that contains silica or alumina with a particle size of 0.1 ~m - 50 ~m, U.S. Patent 5,104,730 discloses- a coating that contains pseudo-boehmite and polyvinyl alcohol, U.S. Patent 5,264,275 discusses a two-layer coating that . CA 02217~2~ 1997-10-06 contains pseudo-boehmite and polyvinyl alcohol/polyvinyl P~rXolidone.
Summary of the Invention An objective of the present invention is to provide an ink jet ink receptive coating composition that can be used in preparing ink jet rec~rding media, which upon printing posses~ the improved combination of properties of (i) good black ink optical density, (ii) low pigment ink cracking, and (iii) good dry time.
In accordance with this objective, we herein provide for:
(a) an inventive ink jet ink receptive coating composition, (b) an inventive ink jet recording media prepared therewith, and (c) an ink jet printing process that utilizes the inventive ink jet recording media.
Specifically, we provide an ink jet ink receptive coating composition that is useful in preparing an ink jet recording media, wherein the coating composition -when appropriately applied to a suitabie base substrate and subsequently printed upon in an ink jet printing process - provides an ink jet recording media that offers the improved properties mentioned above.
More specifically, we provide for an inventive ink jet ink receptive coating composition that is useful in preparing an inventive ink jet recording media, where the coating composition comprises a cellulose ether in combination with an alumina particulate.
The cellulose ether used in the inventive coating composition is preferably methylcellulose or a hydroxyalkyl methylcellulose. It is also preferable that the cellulose ether used in the inventive coating composition possess a hydroxyalkyl content of 0~ to about 32% and a methoxy content of about 16~ to about 32~, when tested according to ASTM D-3876 and ASTM D-2363. Furthermore, it is preferable for the cellulose ether to be present in the inventive coating i . CA 02217~2~ 1997-10-06 compositions at a level of from about 50~ to about 95~
on--a weight/weight basis, based on the amount of solids in the coating composition The alumina particulate used in the inventive coating compositions preferably has an average dispersed particle size of about 10 nm to about 200 nm, and more preferably about 30 nm to abou~ 170 nm.
The good ink jet printing performance that is associated with the ink jet recording media of the present invention, results from the fact that they comprise a suitable substrate having on a surface thereof an ink jet recording layer that is made from one of the inventive ink jet ink receptive coating compositions.
Detailed Description of the Invention The following detailed description is provided as an aid to those desiring to practice the present invention. It is not to be construed as being unduly limiting to the present inventive discovery, since those of ordinary skill in the art will readily recognize that the embodiments of the inventors' discovery disclosed herein may be modified using standard techniques and materials known in the art, without departing from the spirit or scope of the present inventive discovery.
In arriving at the present invention, we have discovered that several design parameters are important to achieving the objective of the present invention.
These design parameters include:
(1) Inorganic oxides such as alumina should be used in ink jet ink receptive coating compositions in combination with polymeric binders to achieve optimal performance (2) Polyvinyl alcohol and polyvinyl pyrrolidone are not appropriate for use as binders for some ink jet recording media applications CA 02217~2~ 1997-10-06 (3) The use of cellulose derivatives alone in preparing ink jet ink receptive coating compositions does not result in an ink jet recording media having the desired combination of properties.
S (4) Not all cellulose derivatives are capable of providing the desired properties in an ink jet recording media, when present in the ~ink jet recording layer thereof.
In order to meet the objective of the present invention, our inventive ink jet ink receptive coating compositions contain at least (i) a cellulose ether and (ii) an alumina particulate.
The ink jet ink receptive coating compositions of this invention preferably contain about 50~ to about 95~
of the cellulose ether therein, on a weight/weight basis, based on the amount of solids in the coating compositions.
The typical examples of cellulose ethers that are useful in the present invention are methylcellulose and hydroxyalkyl methylcelluloses, such as hydroxyethyl methylcellulose, hydroxypropyl methylcellulose and hydroxybutyl methylcellulose. Preferably, the cellulose ether should have a hydroxyalkyl content of 0~ to about 32~ and a methoxyl content of about 16~ to about 32~.
The alumina particulates used in this invention should possess an average dispersed particle size of about 10 nm to about 200 nm, preferably about 30 nm to about 170 nm. Typical examples of alumina particulates that are useful in the present invention include alumina, boehmite, pseudo-boehmite, aluminum hydrate and aluminum oxide.
According to a preferred embodiment of the invention, the ink jet ink receptive coating compositions comprise about 0.01 to about lS~ by weight of particulates therein (not including the aforementioned alumina particulates), based on the weight of the dry coating. In this way it is possible . CA 02217~2~ 1997-10-06 to modify the surface properties of the ink jet Eecording layer in the prepared ink jet recording media.
Examples of such particulates include inorganic particulates, such as silica, kaolin, glass beads, calcium carbonate, titanium oxide, barium sulfate, aluminum silicate, zirconium oxide and tin oxide and organic particulate such as polyolefins, polystyrene, polyurethane, starch, poly(methyl methacrylate) and polytetrafluoroethylene.
In practice, various additives may also be employed in the ink jet ink receptive coating compositions of this invention. These additives can include surface active agents which control the wetting or spreading action of coating solutions, antistatic agents, suspending agents and acidic compounds to control pH of the coating. Other additives may also be used, if so desired.
The ink ~et ink receptive coating compositions of this invention can be applied to a surface of a variety of different base substrates (e.g., transparent plastics, translucent plastics, matte plastics, opaque plastics or papers), to prepare one of the inventive ink jet recording media. Suitable polymeric materials for use as the base substrate include polyester, cellulose esters, polystyrene, polypropylene, poly(vinyl acetate), polycarbonate, and the like. Poly(ethylene terephthalate) film is a particularly preferred base substrate. Further, while almost any paper can be used as the base substrate, clay coated or polyolefin coated papers are particularly preferred as base substrate papers. The thickness of the base substrate is not particularly restricted but should generally be in the range of from about 1 to about 10 mils, preferably from about 3.0 to about 5.0 mils. The base substrate may be pretreated to enhance adhesion of the ink receptive coating thereto.
CA 02217~2~ 1997-10-06 The thickness of the inventive coating is not particularly restricted, but should generally be in the range from about 2 grams per square meter to about 30 grams per square meter, on a surface of the base substrate.
A surface of the base substrate that does not bear the ink jet ink receptive coating may have a backing material placed thereon in order to reduce electrostatic charge and to reduce sheet-to-sheet friction and sticking and reduce curl, if so desired. The backing material may either be a polymeric coating, a polymer film or paper.
Any number of coating methods may be employed to coat the ink jet ink receptive coating composition onto the surface of the base substrate. For example, roller coating, blade coating, wire-bar coating, dip coating, extrusion coating, air knife coating, curtain coating, slide coating, doctor coating or gravure coating, may be used and are well known in the art.
The following Examples are given merely as illustrative of the invention and are not to be considered as limiting thereto. In the Examples "parts"
refers to parts by weight, based on the total weight of solids in the coating compositions.
EXAMPLE I
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Methylcellulosel 3.2 parts Hydroxypropyl methylcellulose2 6.1 parts Alumina Sol3 5.4 parts Water 85.3 parts Crosslinked poly(methyl methacrylate) 4 0 ~ 01 parts 1. Methocel A15LV, Dow Chemical Company CA 02217~2~ 1997-10-06 2. Methocel K3LV, Dow Chemical Company ~_~ Dispal 23N4-20, Vista Chemical Company 4. Soken Chemical & Engineering Company, Ltd.
The coating is applied to a polyester film (ICI
Films) using a No. 24 Meyer rod, and the coating i~
dried at about 130~C for about' 2 minutes.
EXAMPLE I I
A coating composition is prepared according to the following formulation:
Ink Receptive Coatin~ Composition:
Hydroxypropyl methylcellulosel4.1 parts Alumina Sol2 3.8 parts Water 92.1 parts Crosslinked poly(methyl methacrylate) 0.01 parts 1. Methocel K35LV, Dow Chemical Company 2. Dispal llN7-12, Vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and is dried at about 130~C for about 2 minutes.
EXAMPLE I I I
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Hydroxypropyl methylcellulose12.6 parts Alumina Sol2 2.4 parts Water 95.0 parts Crosslinked poly (methyl methacrylate) 0.01 parts 1. Methocel KlOOLV, Dow Chemical Company 2. Nyacol AL20, Nyacol Products, Inc CA 02217~2~ 1997-10-06 .
The coating is applied to a polyester film (ICI
Films) using a No. 70 Meyer rod, and is dried at about , 130~C for about 2 minutes.
EXAMPLE IV
A coating composition is prepared according to the following formulation: ~
Ink Receptive Coatinq Composition:
Methylcellulosel 8 parts Alumina Sol2 6 parts Water 86 parts 1. Methocel A15LV, Dow Chemical Company 2. Dispal 23N4-20, Vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and the coating is dried at about 130~C for about 2 minutes.
COMPAR~TIVE EXAMPLE C - I
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Methylcellulose sodium salt1 4.1 parts Alumina Sol2 3.7 parts Water 92.2 parts Crosslinked poly(methyl methacrylate) 0.01 parts 1. Hercules, Inc.
2. Dispal 23N4-20, vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and is dried at about 130~C for about 2 minutes.
CA 02217~2~ 1997-10-06 COMPARATIVE EXAMPLE C-II
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Polyvinyl alcohol1 5.8 parts Alumina Sol2 ~ 5.3 parts Water 88.9 parts Crosslinked poly(methyl methacrylate)0.01 parts 1. Airvol 823, Air Products and Chemicals, Inc.
2. Dispal 23N4-20, Vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and is dried at about 130~C for about 2 minutes.
COMPARATIVE EXAMPLE C-III
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Polyvinyl pyrrolidone1 5.7 parts Alumina Sol2 5.2 parts Water 89.1 parts Crosslinked poly(methyl methacrylate)0.01 parts 1. PVP K-90, ISP Technologies, Inc.
2. Dispal llN7-12, Vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and is dried at about 130~C for about 2 minutes.
COMPARATIVE EXAMPLE C - IV
A coating composition is prepared according to the following formulation:
Ink Rece~tive Coatinq Composition:
Hydroxypropyl methylcellulosel15 parts Water 5 85 part~
Crosslinked poly(methyl methacrylate) 0.01 parts 1. Methocel K3LV, Dow Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 24 Meyer rod, and is dried at about 130~C for about 2 minutes.
COMPAR~TIVE EXAMPLE C-V
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Hydroxypropyl methylcellulose19.7 parts Colloidal Silica Sol2 8.8 parts Water 81.5 parts Crosslinked poly(methyl methacrylate) 0.01 parts 1. Methocel K3LV, Dow Chemical Company 2. Ludox SK, Dupont Company The coating is applied to a polyester film (ICI
Films) using a No. 24 Meyer rod, and is dried at about 130~C for about 2 minutes.
Each of the prepared ink jet recording media of Examples I-III and Comparative Examples C-I to C-V, are evaluated to determine whether they offer the following improved combination of properties of (i) a good level of black ink optlcal density, (ii) a low level of CA 02217~2~ 1997-10-06 pigment ink cracking, and (iii) a good dry time, when printed in an ink jet printing process.
The prepared ink jet recording media are evaluated by printing on the ink jet recording surface thereof a test plot, with a Hewlett Packard DESKJET 660C printer using HP 51629A and HP 51649A ink cartridges. The black ink is pigment based in the e~aluation.
The black ink optical density of each test sample is measured with a MACBETH TD 904 densitometer (Macbeth Process Measurements) using the beige filter setting.
A measurement is taken at three different locations along a solid black image stripe. The average of the three measurements is the black ink optical density.
The amount of pigmented ink cracking that is associated with each sample is quantitatively rated with a numerical scale of 0 to 5 (0=worst and 5=best). Each Example and Comparative Example is imaged with a test print. The Examples are given a numerical rating by comparing the Examples to standard prints that exhibit each level of ink cracking.
The dry time of each Example is measured by first printing each example with the test plot. The Example is then placed on top of a 20 lb. ream of XEROX 4200 paper. This is time zero (to)~ Thereafter, at thirty second intervals, a sheet of white bond paper is placed onto the surface of the Example, and then another 20 lb.
ream of XEROX 4200 paper is placed on top of the white bond paper. After five seconds, the top ream of paper and white bond paper is removed from on top of the Example. The Example is dry when no transfer of ink between the print and the white bond paper occurs, which is termed the dry time (td_y) The black ink optical density, ink cracking and dry time (measured in minutes) for each Example and Comparative Example is provided in Table I.
CA 022l7~2~ Iss7-l0-06 TABLE I
PE~FO~MANCE EVALUATION OF THE COATINGS
Black Ink Optical Ink Example Den~ity CrackingDry Ti~e I 2.09 4 2.5 II 2.07 ' 4 2 III 2.11 4 2 IV 2.08 5 2.5 C-I 1.19 1 ~5 C-II 1.37 1 3.5 C-III 1.21 1 4.5 c-rv 1.08 1 3.5 C-V .93 0 3.5 As shown in Table I, Examples I to III all exhibited improved black ink optical density, a low level of pigment ink cracking, and a good dry time as compared to the Comparative Examples C-I to C-V.
The pigmented black ink optical density is inversely proportional to ink cracking, with pigment ink cracking decreasing the black ink optical density. When ink cracking is rated below 3, ink cracking is clearly visible to the eye, and the ink jet recording media are not suitable for many commercial applications.
The improved dry time of the examples allows a higher throughput of the media in ink jet printing devices.
Each of the patents and publications referred to herein are incorporated by reference in their entirety into the present application.
Field of the Invention The invention pertains to an ink jet ink receptive coating composition, and to an ink jet recording media prepared therewith by applying said coating composition to a surface of a suitable base substrate.
Bac~4~ d of the Invention Ink jet ink receptive coating layers used for ink jet recording media have to meet a number of performance requirements. These requirements include dry time, color density, resolution, tack, color fidelity and lightfastness, as well as cost. There are many materials, both organic and inorganic, that have been proposed for this application. Among them, cellulose derivatives and alumina particulates have shown promising performance, and cellulose derivatives have been used alone or in combination with an inorganic pigment other than alumina For example, U.S. Patent 4,555,437 describes a hydroxyethyl cellulose coating, and U.S. Patent 4,575,465 describes a hydroxyprop~yl cellulose coating.
Alumina has been extensively used as a filler or pigment for ink jet recording media. For example, U.S.
Patent 4,780,3S6 discloses a two-layer coating that contains silica or alumina with a particle size of 0.1 ~m - 50 ~m, U.S. Patent 5,104,730 discloses- a coating that contains pseudo-boehmite and polyvinyl alcohol, U.S. Patent 5,264,275 discusses a two-layer coating that . CA 02217~2~ 1997-10-06 contains pseudo-boehmite and polyvinyl alcohol/polyvinyl P~rXolidone.
Summary of the Invention An objective of the present invention is to provide an ink jet ink receptive coating composition that can be used in preparing ink jet rec~rding media, which upon printing posses~ the improved combination of properties of (i) good black ink optical density, (ii) low pigment ink cracking, and (iii) good dry time.
In accordance with this objective, we herein provide for:
(a) an inventive ink jet ink receptive coating composition, (b) an inventive ink jet recording media prepared therewith, and (c) an ink jet printing process that utilizes the inventive ink jet recording media.
Specifically, we provide an ink jet ink receptive coating composition that is useful in preparing an ink jet recording media, wherein the coating composition -when appropriately applied to a suitabie base substrate and subsequently printed upon in an ink jet printing process - provides an ink jet recording media that offers the improved properties mentioned above.
More specifically, we provide for an inventive ink jet ink receptive coating composition that is useful in preparing an inventive ink jet recording media, where the coating composition comprises a cellulose ether in combination with an alumina particulate.
The cellulose ether used in the inventive coating composition is preferably methylcellulose or a hydroxyalkyl methylcellulose. It is also preferable that the cellulose ether used in the inventive coating composition possess a hydroxyalkyl content of 0~ to about 32% and a methoxy content of about 16~ to about 32~, when tested according to ASTM D-3876 and ASTM D-2363. Furthermore, it is preferable for the cellulose ether to be present in the inventive coating i . CA 02217~2~ 1997-10-06 compositions at a level of from about 50~ to about 95~
on--a weight/weight basis, based on the amount of solids in the coating composition The alumina particulate used in the inventive coating compositions preferably has an average dispersed particle size of about 10 nm to about 200 nm, and more preferably about 30 nm to abou~ 170 nm.
The good ink jet printing performance that is associated with the ink jet recording media of the present invention, results from the fact that they comprise a suitable substrate having on a surface thereof an ink jet recording layer that is made from one of the inventive ink jet ink receptive coating compositions.
Detailed Description of the Invention The following detailed description is provided as an aid to those desiring to practice the present invention. It is not to be construed as being unduly limiting to the present inventive discovery, since those of ordinary skill in the art will readily recognize that the embodiments of the inventors' discovery disclosed herein may be modified using standard techniques and materials known in the art, without departing from the spirit or scope of the present inventive discovery.
In arriving at the present invention, we have discovered that several design parameters are important to achieving the objective of the present invention.
These design parameters include:
(1) Inorganic oxides such as alumina should be used in ink jet ink receptive coating compositions in combination with polymeric binders to achieve optimal performance (2) Polyvinyl alcohol and polyvinyl pyrrolidone are not appropriate for use as binders for some ink jet recording media applications CA 02217~2~ 1997-10-06 (3) The use of cellulose derivatives alone in preparing ink jet ink receptive coating compositions does not result in an ink jet recording media having the desired combination of properties.
S (4) Not all cellulose derivatives are capable of providing the desired properties in an ink jet recording media, when present in the ~ink jet recording layer thereof.
In order to meet the objective of the present invention, our inventive ink jet ink receptive coating compositions contain at least (i) a cellulose ether and (ii) an alumina particulate.
The ink jet ink receptive coating compositions of this invention preferably contain about 50~ to about 95~
of the cellulose ether therein, on a weight/weight basis, based on the amount of solids in the coating compositions.
The typical examples of cellulose ethers that are useful in the present invention are methylcellulose and hydroxyalkyl methylcelluloses, such as hydroxyethyl methylcellulose, hydroxypropyl methylcellulose and hydroxybutyl methylcellulose. Preferably, the cellulose ether should have a hydroxyalkyl content of 0~ to about 32~ and a methoxyl content of about 16~ to about 32~.
The alumina particulates used in this invention should possess an average dispersed particle size of about 10 nm to about 200 nm, preferably about 30 nm to about 170 nm. Typical examples of alumina particulates that are useful in the present invention include alumina, boehmite, pseudo-boehmite, aluminum hydrate and aluminum oxide.
According to a preferred embodiment of the invention, the ink jet ink receptive coating compositions comprise about 0.01 to about lS~ by weight of particulates therein (not including the aforementioned alumina particulates), based on the weight of the dry coating. In this way it is possible . CA 02217~2~ 1997-10-06 to modify the surface properties of the ink jet Eecording layer in the prepared ink jet recording media.
Examples of such particulates include inorganic particulates, such as silica, kaolin, glass beads, calcium carbonate, titanium oxide, barium sulfate, aluminum silicate, zirconium oxide and tin oxide and organic particulate such as polyolefins, polystyrene, polyurethane, starch, poly(methyl methacrylate) and polytetrafluoroethylene.
In practice, various additives may also be employed in the ink jet ink receptive coating compositions of this invention. These additives can include surface active agents which control the wetting or spreading action of coating solutions, antistatic agents, suspending agents and acidic compounds to control pH of the coating. Other additives may also be used, if so desired.
The ink ~et ink receptive coating compositions of this invention can be applied to a surface of a variety of different base substrates (e.g., transparent plastics, translucent plastics, matte plastics, opaque plastics or papers), to prepare one of the inventive ink jet recording media. Suitable polymeric materials for use as the base substrate include polyester, cellulose esters, polystyrene, polypropylene, poly(vinyl acetate), polycarbonate, and the like. Poly(ethylene terephthalate) film is a particularly preferred base substrate. Further, while almost any paper can be used as the base substrate, clay coated or polyolefin coated papers are particularly preferred as base substrate papers. The thickness of the base substrate is not particularly restricted but should generally be in the range of from about 1 to about 10 mils, preferably from about 3.0 to about 5.0 mils. The base substrate may be pretreated to enhance adhesion of the ink receptive coating thereto.
CA 02217~2~ 1997-10-06 The thickness of the inventive coating is not particularly restricted, but should generally be in the range from about 2 grams per square meter to about 30 grams per square meter, on a surface of the base substrate.
A surface of the base substrate that does not bear the ink jet ink receptive coating may have a backing material placed thereon in order to reduce electrostatic charge and to reduce sheet-to-sheet friction and sticking and reduce curl, if so desired. The backing material may either be a polymeric coating, a polymer film or paper.
Any number of coating methods may be employed to coat the ink jet ink receptive coating composition onto the surface of the base substrate. For example, roller coating, blade coating, wire-bar coating, dip coating, extrusion coating, air knife coating, curtain coating, slide coating, doctor coating or gravure coating, may be used and are well known in the art.
The following Examples are given merely as illustrative of the invention and are not to be considered as limiting thereto. In the Examples "parts"
refers to parts by weight, based on the total weight of solids in the coating compositions.
EXAMPLE I
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Methylcellulosel 3.2 parts Hydroxypropyl methylcellulose2 6.1 parts Alumina Sol3 5.4 parts Water 85.3 parts Crosslinked poly(methyl methacrylate) 4 0 ~ 01 parts 1. Methocel A15LV, Dow Chemical Company CA 02217~2~ 1997-10-06 2. Methocel K3LV, Dow Chemical Company ~_~ Dispal 23N4-20, Vista Chemical Company 4. Soken Chemical & Engineering Company, Ltd.
The coating is applied to a polyester film (ICI
Films) using a No. 24 Meyer rod, and the coating i~
dried at about 130~C for about' 2 minutes.
EXAMPLE I I
A coating composition is prepared according to the following formulation:
Ink Receptive Coatin~ Composition:
Hydroxypropyl methylcellulosel4.1 parts Alumina Sol2 3.8 parts Water 92.1 parts Crosslinked poly(methyl methacrylate) 0.01 parts 1. Methocel K35LV, Dow Chemical Company 2. Dispal llN7-12, Vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and is dried at about 130~C for about 2 minutes.
EXAMPLE I I I
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Hydroxypropyl methylcellulose12.6 parts Alumina Sol2 2.4 parts Water 95.0 parts Crosslinked poly (methyl methacrylate) 0.01 parts 1. Methocel KlOOLV, Dow Chemical Company 2. Nyacol AL20, Nyacol Products, Inc CA 02217~2~ 1997-10-06 .
The coating is applied to a polyester film (ICI
Films) using a No. 70 Meyer rod, and is dried at about , 130~C for about 2 minutes.
EXAMPLE IV
A coating composition is prepared according to the following formulation: ~
Ink Receptive Coatinq Composition:
Methylcellulosel 8 parts Alumina Sol2 6 parts Water 86 parts 1. Methocel A15LV, Dow Chemical Company 2. Dispal 23N4-20, Vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and the coating is dried at about 130~C for about 2 minutes.
COMPAR~TIVE EXAMPLE C - I
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Methylcellulose sodium salt1 4.1 parts Alumina Sol2 3.7 parts Water 92.2 parts Crosslinked poly(methyl methacrylate) 0.01 parts 1. Hercules, Inc.
2. Dispal 23N4-20, vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and is dried at about 130~C for about 2 minutes.
CA 02217~2~ 1997-10-06 COMPARATIVE EXAMPLE C-II
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Polyvinyl alcohol1 5.8 parts Alumina Sol2 ~ 5.3 parts Water 88.9 parts Crosslinked poly(methyl methacrylate)0.01 parts 1. Airvol 823, Air Products and Chemicals, Inc.
2. Dispal 23N4-20, Vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and is dried at about 130~C for about 2 minutes.
COMPARATIVE EXAMPLE C-III
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Polyvinyl pyrrolidone1 5.7 parts Alumina Sol2 5.2 parts Water 89.1 parts Crosslinked poly(methyl methacrylate)0.01 parts 1. PVP K-90, ISP Technologies, Inc.
2. Dispal llN7-12, Vista Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 50 Meyer rod, and is dried at about 130~C for about 2 minutes.
COMPARATIVE EXAMPLE C - IV
A coating composition is prepared according to the following formulation:
Ink Rece~tive Coatinq Composition:
Hydroxypropyl methylcellulosel15 parts Water 5 85 part~
Crosslinked poly(methyl methacrylate) 0.01 parts 1. Methocel K3LV, Dow Chemical Company The coating is applied to a polyester film (ICI
Films) using a No. 24 Meyer rod, and is dried at about 130~C for about 2 minutes.
COMPAR~TIVE EXAMPLE C-V
A coating composition is prepared according to the following formulation:
Ink Receptive Coatinq Composition:
Hydroxypropyl methylcellulose19.7 parts Colloidal Silica Sol2 8.8 parts Water 81.5 parts Crosslinked poly(methyl methacrylate) 0.01 parts 1. Methocel K3LV, Dow Chemical Company 2. Ludox SK, Dupont Company The coating is applied to a polyester film (ICI
Films) using a No. 24 Meyer rod, and is dried at about 130~C for about 2 minutes.
Each of the prepared ink jet recording media of Examples I-III and Comparative Examples C-I to C-V, are evaluated to determine whether they offer the following improved combination of properties of (i) a good level of black ink optlcal density, (ii) a low level of CA 02217~2~ 1997-10-06 pigment ink cracking, and (iii) a good dry time, when printed in an ink jet printing process.
The prepared ink jet recording media are evaluated by printing on the ink jet recording surface thereof a test plot, with a Hewlett Packard DESKJET 660C printer using HP 51629A and HP 51649A ink cartridges. The black ink is pigment based in the e~aluation.
The black ink optical density of each test sample is measured with a MACBETH TD 904 densitometer (Macbeth Process Measurements) using the beige filter setting.
A measurement is taken at three different locations along a solid black image stripe. The average of the three measurements is the black ink optical density.
The amount of pigmented ink cracking that is associated with each sample is quantitatively rated with a numerical scale of 0 to 5 (0=worst and 5=best). Each Example and Comparative Example is imaged with a test print. The Examples are given a numerical rating by comparing the Examples to standard prints that exhibit each level of ink cracking.
The dry time of each Example is measured by first printing each example with the test plot. The Example is then placed on top of a 20 lb. ream of XEROX 4200 paper. This is time zero (to)~ Thereafter, at thirty second intervals, a sheet of white bond paper is placed onto the surface of the Example, and then another 20 lb.
ream of XEROX 4200 paper is placed on top of the white bond paper. After five seconds, the top ream of paper and white bond paper is removed from on top of the Example. The Example is dry when no transfer of ink between the print and the white bond paper occurs, which is termed the dry time (td_y) The black ink optical density, ink cracking and dry time (measured in minutes) for each Example and Comparative Example is provided in Table I.
CA 022l7~2~ Iss7-l0-06 TABLE I
PE~FO~MANCE EVALUATION OF THE COATINGS
Black Ink Optical Ink Example Den~ity CrackingDry Ti~e I 2.09 4 2.5 II 2.07 ' 4 2 III 2.11 4 2 IV 2.08 5 2.5 C-I 1.19 1 ~5 C-II 1.37 1 3.5 C-III 1.21 1 4.5 c-rv 1.08 1 3.5 C-V .93 0 3.5 As shown in Table I, Examples I to III all exhibited improved black ink optical density, a low level of pigment ink cracking, and a good dry time as compared to the Comparative Examples C-I to C-V.
The pigmented black ink optical density is inversely proportional to ink cracking, with pigment ink cracking decreasing the black ink optical density. When ink cracking is rated below 3, ink cracking is clearly visible to the eye, and the ink jet recording media are not suitable for many commercial applications.
The improved dry time of the examples allows a higher throughput of the media in ink jet printing devices.
Each of the patents and publications referred to herein are incorporated by reference in their entirety into the present application.
Claims (20)
1. An ink jet ink receptive coating composition for preparing an ink jet recording media, which coating composition comprises:
a cellulose ether and an alumina particulate.
a cellulose ether and an alumina particulate.
2. The ink receptive coating composition according to claim 1, wherein said cellulose ether is methylcellulose or a hydroxyalkyl methylcellulose.
3. The ink receptive coating composition according to claim 2, wherein said cellulose ether has a hydroxyalkyl content of 0% to about 32% and a methoxy content of about 16% to about 32%.
4. The ink receptive coating composition according to claim 3, wherein said coating composition contains about 50% to about 95% of said cellulose ether on a weight/weight basis, based on the amount of solids in said coating composition
5. The ink receptive coating composition according to claim 4, wherein said alumina particulate has an average dispersed particle size of about 10 nm to about 200 nm.
6. The ink receptive coating composition according to claim 3, wherein said cellulose ether is selected from the group consisting of:
methylcellulose, hydroxyethyl methylcellulose, hydroxypropyl methylcellulose and hydroxybutyl methylcellulose.
methylcellulose, hydroxyethyl methylcellulose, hydroxypropyl methylcellulose and hydroxybutyl methylcellulose.
7. The ink receptive coating composition according to claim 4, wherein said alumina particulate is selected from the group consisting of:
alumina, boehmite, pseudo-boehmite, aluminum hydrate and aluminum oxide.
alumina, boehmite, pseudo-boehmite, aluminum hydrate and aluminum oxide.
8. The ink receptive coating composition according to claim 1, wherein said coating composition additionally comprises an inorganic particulate selected from the group consisting of:
silica, kaolin, glass beads, calcium carbonate, titanium oxide, barium sulfate, aluminum silicate, zirconium oxide and tin oxide.
silica, kaolin, glass beads, calcium carbonate, titanium oxide, barium sulfate, aluminum silicate, zirconium oxide and tin oxide.
9. The ink receptive coating composition according to claim 1, wherein said coating composition additionally comprises an organic particulate selected from the group consisting of:
a polyolefin, polystyrene, polyurethane, starch, poly(methyl methacrylate) and polytetrafluoroethylene.
a polyolefin, polystyrene, polyurethane, starch, poly(methyl methacrylate) and polytetrafluoroethylene.
10. An ink jet recording medium that comprises:
a base substrate having coated on a surface thereof an ink jet ink receptive layer that contains a cellulose ether and an alumina particulate.
a base substrate having coated on a surface thereof an ink jet ink receptive layer that contains a cellulose ether and an alumina particulate.
11. The ink jet recording medium according to claim 10, wherein said cellulose ether is methylcellulose or a hydroxyalkyl methylcellulose.
12. The ink jet recording medium according to claim 11, wherein said cellulose ether has a hydroxyalkyl content of 0% to about 32% and a methoxy content of about 16% to about 32%.
13. The ink jet recording medium according to claim 12, wherein said ink jet recording layer contains about 50% to about 95% of said cellulose ether on a weight/weight basis, based on the amount of solids in said coating layer.
14. The ink jet recording medium according to claim 13, wherein said alumina particulate has an average dispersed particle size of about 10 nm to about 200 nm.
15. The ink jet recording medium according to claim 12, wherein said cellulose ether is selected from the group consisting of:
methylcellulose, hydroxyethyl methylcellulose, hydroxypropyl methylcellulose and hydroxybutyl methylcellulose.
methylcellulose, hydroxyethyl methylcellulose, hydroxypropyl methylcellulose and hydroxybutyl methylcellulose.
16. The ink jet recording medium according to claim 13, wherein said alumina particulate is selected from the group consisting of:
alumina, boehmite, pseudo-boehmite, aluminum hydrate and aluminum oxide.
alumina, boehmite, pseudo-boehmite, aluminum hydrate and aluminum oxide.
17. The ink jet recording medium according to claim 10, wherein said ink jet recording layer additionally comprises an inorganic particulate that is selected from the group consisting of:
silica, kaolin, glass beads, calcium carbonate, titanium oxide, barium sulfate, aluminum silicate, zirconium oxide and tin oxide.
silica, kaolin, glass beads, calcium carbonate, titanium oxide, barium sulfate, aluminum silicate, zirconium oxide and tin oxide.
18. The ink jet recording medium according to claim 10, wherein said ink jet recording layer additionally comprises an organic particulate that is selected from the group consisting of:
a polyolefin, polystyrene, polyurethane, starch, poly(methyl methacrylate), and polytetrafluoroethylene.
a polyolefin, polystyrene, polyurethane, starch, poly(methyl methacrylate), and polytetrafluoroethylene.
19. The ink jet recording medium according to claim 10, wherein the base substrate is selected from the group consisting of:
a transparent plastic substrate, an opaque plastic substrate, a matte plastic substrate, a translucent substrate and a paper.
a transparent plastic substrate, an opaque plastic substrate, a matte plastic substrate, a translucent substrate and a paper.
20. An ink jet printing process for forming an ink jet print, the process comprising:
applying an ink jet ink to the ink jet recording layer of the ink jet recording medium of claim 1, and allowing said ink to dry.
applying an ink jet ink to the ink jet recording layer of the ink jet recording medium of claim 1, and allowing said ink to dry.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73030996A | 1996-10-11 | 1996-10-11 | |
| US08/730,309 | 1996-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2217525A1 true CA2217525A1 (en) | 1998-04-11 |
Family
ID=24934796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2217525 Abandoned CA2217525A1 (en) | 1996-10-11 | 1997-10-06 | An ink jet receptive coating composition |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0835762A1 (en) |
| JP (1) | JPH10119429A (en) |
| CA (1) | CA2217525A1 (en) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0972650A1 (en) * | 1998-07-13 | 2000-01-19 | ARKWRIGHT Incorporated | Ink jet receptive recording media |
| WO2003093023A1 (en) * | 2002-04-30 | 2003-11-13 | Canon Finetech Inc. | Ink-jet recording sheets and production process thereof |
| US8449956B2 (en) * | 2010-09-17 | 2013-05-28 | Carestream Health, Inc. | Transparent ink-jet recording films, compositions, and methods |
| EP4019596A1 (en) | 2012-03-05 | 2022-06-29 | Landa Corporation Ltd. | Method for manufacturing an ink film construction |
| US9498946B2 (en) | 2012-03-05 | 2016-11-22 | Landa Corporation Ltd. | Apparatus and method for control or monitoring of a printing system |
| US11106161B2 (en) | 2012-03-05 | 2021-08-31 | Landa Corporation Ltd. | Intermediate transfer members for use with indirect printing systems and protonatable intermediate transfer members for use with indirect printing systems |
| US9643403B2 (en) | 2012-03-05 | 2017-05-09 | Landa Corporation Ltd. | Printing system |
| US11104123B2 (en) | 2012-03-05 | 2021-08-31 | Landa Corporation Ltd. | Digital printing system |
| CN104271356B (en) | 2012-03-05 | 2016-10-19 | 兰达公司 | Digital printing process |
| JP6393190B2 (en) | 2012-03-15 | 2018-09-19 | ランダ コーポレイション リミテッド | Endless flexible belt for printing system |
| GB201401173D0 (en) | 2013-09-11 | 2014-03-12 | Landa Corp Ltd | Ink formulations and film constructions thereof |
| GB2536489B (en) | 2015-03-20 | 2018-08-29 | Landa Corporation Ltd | Indirect printing system |
| GB2537813A (en) | 2015-04-14 | 2016-11-02 | Landa Corp Ltd | Apparatus for threading an intermediate transfer member of a printing system |
| JP6980704B2 (en) | 2016-05-30 | 2021-12-15 | ランダ コーポレイション リミテッド | Digital printing process |
| GB201609463D0 (en) | 2016-05-30 | 2016-07-13 | Landa Labs 2012 Ltd | Method of manufacturing a multi-layer article |
| US10933661B2 (en) | 2016-05-30 | 2021-03-02 | Landa Corporation Ltd. | Digital printing process |
| WO2018052400A1 (en) | 2016-09-13 | 2018-03-22 | Hewlett-Packard Development Company, L.P. | Image-receiving compositions |
| CN111212736B (en) | 2017-10-19 | 2021-11-23 | 兰达公司 | Endless flexible belt for a printing system |
| WO2019097464A1 (en) | 2017-11-19 | 2019-05-23 | Landa Corporation Ltd. | Digital printing system |
| US11511536B2 (en) | 2017-11-27 | 2022-11-29 | Landa Corporation Ltd. | Calibration of runout error in a digital printing system |
| US11707943B2 (en) | 2017-12-06 | 2023-07-25 | Landa Corporation Ltd. | Method and apparatus for digital printing |
| WO2019111223A1 (en) | 2017-12-07 | 2019-06-13 | Landa Corporation Ltd. | Digital printing process and method |
| CN112399918B (en) | 2018-06-26 | 2023-01-31 | 兰达公司 | Intermediate transmission member of digital printing system |
| US10994528B1 (en) | 2018-08-02 | 2021-05-04 | Landa Corporation Ltd. | Digital printing system with flexible intermediate transfer member |
| US11318734B2 (en) | 2018-10-08 | 2022-05-03 | Landa Corporation Ltd. | Friction reduction means for printing systems and method |
| EP3902680A4 (en) | 2018-12-24 | 2022-08-31 | Landa Corporation Ltd. | A digital printing system |
| CN116278443A (en) * | 2019-01-03 | 2023-06-23 | 兰达公司 | Formulation for use with intermediate transfer member of indirect printing system and printing method using the same |
| EP4066064A4 (en) | 2019-11-25 | 2024-01-10 | Landa Corp Ltd | Drying ink in digital printing using infrared radiation absorbed by particles embedded inside itm |
| US11321028B2 (en) | 2019-12-11 | 2022-05-03 | Landa Corporation Ltd. | Correcting registration errors in digital printing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU615183B2 (en) * | 1987-02-24 | 1991-09-26 | Xaar Limited | Recording transparency and method |
| US5075153A (en) * | 1989-07-24 | 1991-12-24 | Xerox Corporation | Coated paper containing a plastic supporting substrate |
| US5635291A (en) * | 1993-04-28 | 1997-06-03 | Canon Kabushiki Kaisha | Ink-jet recording medium |
| JP2887098B2 (en) * | 1994-10-26 | 1999-04-26 | キヤノン株式会社 | Recording medium, manufacturing method thereof, and image forming method |
| JP2877740B2 (en) * | 1994-10-27 | 1999-03-31 | キヤノン株式会社 | Recording medium, image forming method using the same, and printed matter |
| AU704721B2 (en) * | 1995-12-15 | 1999-04-29 | Ppg Industries Ohio, Inc. | Printing sheet |
-
1997
- 1997-09-24 JP JP9258647A patent/JPH10119429A/en active Pending
- 1997-10-03 EP EP97203059A patent/EP0835762A1/en not_active Withdrawn
- 1997-10-06 CA CA 2217525 patent/CA2217525A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10119429A (en) | 1998-05-12 |
| EP0835762A1 (en) | 1998-04-15 |
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