# US 2018/0022138 A1 · Printable recording media

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- Number: US 2018/0022138 A1
- Document ID: US20180022138A1
- Status: Published application
- Kind: A1
- Application number: 15/541,672
- Filed: 2015-01-28
- Published: 2018-01-25
- Earliest claimed: 2015-01-28
- Assignees: Hewlett-Packard Development Company, L.P.
- Applicants: Hewlett-Packard Development Company, L.P.
- Inventors: Xiaoqi Zhou; Xulong Fu; Haowen Yu
- Web page: https://patentgrep.com/patent/US20180022138A1

## CPC

- B41M 5/502: {characterised by structural details, e.g. multilayer materials (supports, backcoats or intermediate layers for thermal dye transfer donor and receiver sheets B41M5/41, B41M5/42)}
- B41J 2/01: Ink jet
- B41M 5/504: {Backcoats}
- B41M 5/506: {Intermediate layers}
- B41M 5/508: {Supports}
- B41M 5/5218: {characterised by inorganic additives, e.g. pigments, clays}
- B41M 5/5245: {characterised by the use of polymers containing cationic or anionic groups, e.g. mordants}
- B41M 2205/36: Backcoats; Back layers
- B41M 2205/38: Intermediate layers; Layers between substrate and imaging layer
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

Disclosed herein is a printable recording media including a substrate and, at least, an ink receiving layer that includes a first distinct layer and a second distinct layer that is applied on top of the first distinct layer. The first distinct layer includes an electrical charged substance and the second distinct layer includes, at least, a polymeric binder and nano-size inorganic pigment particles. Also disclosed herein is a method for making the printable recording media.

## Claims

### Claim 1

A printable recording media comprising a substrate, and, at least, an ink receiving layer that includes a first distinct layer comprising an electrical charged substance, and, on top of said first distinct layer, a second distinct layer containing, at least, a polymeric binder and nano-size inorganic pigment particles.

### Claim 2 (depends on 1)

The printable recording media, according to claim 1, wherein the first distinct layer and the second distinct layer, of the ink receiving layer, have a difference in coating thickness in Z-direction that is, at least, 1:10.

### Claim 3 (depends on 1)

The printable recording media, according to claim 1, wherein the ink receiving layer is applied to one side of the substrate and forms a layer having a coat-weight in the range of about 0.5 to about 30 gsm.

### Claim 4 (depends on 1)

The printable recording media, according to claim 1, that further comprises a backing coating layer that is applied, on the substrate, on the opposite side of the ink receiving layer.

### Claim 5 (depends on 4)

The printable recording media, according to claim 4, wherein the backing coating layer is applied at a coat weight ranging from about 1.0 gsm or from about 15 gsm.

### Claim 6 (depends on 1)

The printable recording media, according to claim 1, wherein, in the first distinct layer, the electrical charged substance is a water soluble divalent or multi-valent metallic salt.

### Claim 7 (depends on 1)

The printable recording media, according to claim 1, wherein, in the first distinct layer, the electrical charged substance is calcium chloride and/or calcium acetate.

### Claim 8 (depends on 1)

The printable recording media, according to claim 1, wherein the first distinct layer further comprises a polymeric binder.

### Claim 9 (depends on 1)

The printable recording media, according to claim 1, wherein the first distinct layer has a thickness in the range of about 0.001 nanometers to about 100 nanometers out of the top surface of the substrate.

### Claim 10 (depends on 1)

The printable recording media, according to claim 1, wherein the second distinct layer contains from about 40 wt % to about 95 wt % of nano-size inorganic pigment particles by total weight of the second distinct layer.

### Claim 11 (depends on 1)

The printable recording media, according to claim 1, wherein the second distinct layer contains inorganic pigment particles that have an average particle size in the range of about 1 to about 150 nanometers.

### Claim 12 (depends on 1)

The printable recording media, according to claim 1, wherein, in the second distinct layer, the nano-size inorganic pigment particles are metal oxide or complex metal oxide particles.

### Claim 13 (depends on 1)

The printable recording media, according to claim 1, wherein in the second distinct layer, the nano-size inorganic pigment particles are calcium carbonate, aluminum oxide (Al2O3) or silicon dioxide (SiO2).

### Claim 14

An article comprising a cellulose paper substrate having, on its image side, an ink fixation layer and an ink fusion layer wherein the ink fusion layer is applied over the ink fixation layer as a distinct layer and wherein the difference in coating thickness in Z-direction is, at least, 1:10.

### Claim 15

A method for making a printable recording media comprising:
a. providing a substrate;
b. applying a first distinct layer comprising an electrical charged substance;
c. drying said first distinct layer;
d. applying a second distinct layer containing, at least, a polymeric binder and nano-size inorganic pigment particles;
e. drying said second distinct layer in order to obtain an ink receiving layer.