A water-dispersible sheet with improved water dispersibility is provided. Provided is paper-making fibers containing two kinds of compounds, a specific alkalized fibrous carboxyalkyl cellulose and a specific carboxyalkyl cellulose salt. That is a water-dispersible sheet comprising a papermaking fiber and an alkalized fibrous carboxyalkyl cellulose and further comprising a carboxyalkyl cellulose salt, wherein the degree of etherification of the fibrous carboxyalkyl cellulose is 0.2 to 0.6, the degree of etherification of the carboxyalkyl cellulose salt is 0.5 to 1.6, the viscosity of 1% aqueous solution of the carboxyalkyl cellulose salt measured by Brookfield viscometer is 2 to 200 mPa-s, and the ratio of the carboxyalkyl cellulose salt to the sum of the papermaking fibers and the alkalized fibrous carboxyalkyl cellulose is 0.1 to 10% by weight.

The invention relates to transfer paper for sublimation printing, comprising a fibrous substrate, said transfer paper having one or more cationic agents on at least one face thereof, deposited on the fibrous substrate by means of surface treatment, the amount of cationic agent(s) being greater than or equal to 8% by dry weight of the total dry weight of the compound(s) added to the fibrous substrate by means of the surface treatment.

The present invention provides a water-dispersible sheet with a suppressed time degradation of the tacky adhesiveness of the tacky adhesive layer, while maintaining the water dispersibility.

The time degradation of the tacky adhesiveness of the tacky adhesive layer of a water-dispersible sheet can be suppressed, while maintaining the water dispersibility of the water-dispersible sheet, by using a paper substrate of the water-dispersible sheet with a multilayer structure, wherein one of the multilayer (inner layer) which is not in contact with a tacky adhesive layer and the other layer (surface layer) which is in contact with the tacky adhesive layer comprise independently a mixed pulp of a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the weight ratio of these layers and the beating degree of the mixed pulps are set in the specific ranges. Provided is a water-dispersible sheet comprising a paper substrate comprising an inner layer and at least one surface layer, wherein a tacky adhesive layer is installed on one of the surface layer (hereinafter referred to as first surface layer), wherein the first surface layer comprises a mixed pulp 1, which comprises a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the Canadian standard freeness of the mixed pulp 1 is from 450 to 600 ml CSF, the content of the wood pulp in the mixed pulp 1 is from 50 to 95% by weight, the inner layer comprises a mixed pulp 3, which comprises a wood pulp and a refined pulp with -cellulose content of 88% by weight or more, wherein the Canadian standard freeness of the mixed pulp 3 is from 600 to 750 ml CSF, and the content of the wood pulp in the mixed pulp 3 is from 50 to 95% by weight.

Provided is a combination of a thermal transfer sheet and a seal-type printing sheet, the combination being capable of preventing occurrence of wrinkles in a print.

In a combination of a thermal transfer sheet including a substrate and a colorant layer provided on one surface of the substrate and a seal-type printing sheet including a releasing substrate and a printing paper sheet with a pressure-sensitive adhesive layer provided on a portion of one surface of the releasing substrate, the difference between the dynamic friction coefficient between the colorant layer in the thermal transfer sheet and the printing paper sheet with a pressure-sensitive adhesive layer in the seal-type printing sheet and the dynamic friction coefficient between the colorant layer in the thermal transfer sheet and the releasing substrate in the seal-type printing sheet is 1.0 or less.

A laminated film is provided which has excellent shape appearance at winding and also excellent processability and is capable of achieving higher glossiness of printed objects, the laminated film containing a substrate layer (layer A) composed of a biaxially oriented polyester film and a coating layer (layer B) on at least one side of the layer A, wherein the crystal size of the (100) plane of the layer A obtained by an X-ray diffraction measurement is 4.5 nm or more and less than 6.0 nm, a higher heat shrinkage ratio of the laminated film at 150 C. for 30 minutes between a heat shrinkage ratio in the longitudinal direction and a heat shrinkage ratio in the width direction at 150 C. for 30 minutes is 0.5 to 2.5%, the layer B is located on at least one outermost surface layer, and a surface opposite to the surface having the layer B has a center line average roughness (SRa) of 5 to 15 nm.

A laminated film is provided which has excellent shape appearance at winding and also excellent processability and is capable of achieving higher glossiness of printed objects, the laminated film containing a substrate layer (layer A) composed of a biaxially oriented polyester film and a coating layer (layer B) on at least one side of the layer A, wherein the crystal size of the (100) plane of the layer A obtained by an X-ray diffraction measurement is 4.5 nm or more and less than 6.0 nm, a higher heat shrinkage ratio of the laminated film at 150 C. for 30 minutes between a heat shrinkage ratio in the longitudinal direction and a heat shrinkage ratio in the width direction at 150 C. for 30 minutes is 0.5 to 2.5%, the layer B is located on at least one outermost surface layer, and a surface opposite to the surface having the layer B has a center line average roughness (SRa) of 5 to 15 nm.

A composite support includes a first layer or sheet made from a printable or dyed material, a second layer or flexible polymer layer, and a third layer made from a hydrophilic and film-forming polymer. A method of using the support, in particular in digital printing or in dyeing with sublimation dyes, is also disclosed.

Heat transfer sheets for dye sublimation are provided, along with methods of their formation and use. The heat transfer sheet for dye sublimation may include a base sheet and a dye sublimation coating on a surface of the base sheet. The dye sublimation coating generally includes a plurality of microparticles dispersed in a polymeric binder, with the plurality of microparticles including a mixture of tack-inducing microparticles and oxide microparticles.

Heat transfer sheets for dye sublimation are provided, along with methods of their formation and use. The heat transfer sheet for dye sublimation may include a base sheet and a dye sublimation coating on a surface of the base sheet. The dye sublimation coating generally includes a plurality of microparticles dispersed in a polymeric binder, with the plurality of microparticles including a mixture of tack-inducing microparticles and oxide microparticles.

Provided is a seal-type thermal transfer image-receiving sheet capable of providing a seal section having novel designability. A seal-type thermal transfer image-receiving sheet includes a release section and a seal section integrated. The seal section is provided peelably from the release section. The seal section has a layered structure in which a pressure-adhesive layer and a receiving layer capable of receiving a sublimable dye are layered in the order mentioned from the side of the release section. When the seal section is peeled off from the release section, a reference plate and the seal section peeled off are superposed together, and a reflection density of the reference plate is measured from the side of the seal section, the value of the reflection density is 15% or more, on the presupposition that the reflection density of the reference plate before the superposition with the seal section is set to 100%.