A thermosensitive recording medium including a base and a recording layer including a photothermal conversion material and disposed on the base, wherein the thermosensitive recording medium is configured to record information in the thermosensitive recording medium through laser light irradiation, and wherein a color difference delta E between a color tone A of a background observed through the thermosensitive recording medium in which information is not recorded and a color tone B of the background directly observed without the thermosensitive recording medium in which information is not recorded is 20 or less, and a film thickness D of an area of the recording layer irradiated with laser light after information recording performed by laser light irradiation is 140% or greater but 250% or less relative to a film thickness C of the recording layer of the thermosensitive recording medium in which information is not recorded.

A primer is provided that includes water, a cationic resin, a polyvalent metal salt, and a diethylene glycol alkyl ether-based organic solvent.

A primer is provided that includes water, a cationic resin, a polyvalent metal salt, and a diethylene glycol alkyl ether-based organic solvent.

An ink set according to one embodiment of the present disclosure includes: a water-based ink composition containing a colorant; a first treatment liquid containing an aggregating agent; and a second treatment liquid containing an aggregating agent. In the ink set described above, a content of the aggregating agent in the first treatment liquid is 0.60 mol/kg or more, a content of the aggregating agent in the second treatment liquid is less than 0.60 mol/kg, the first treatment liquid is used together with the ink composition for recording on a recording medium which is a low-permeable substrate, and the second treatment liquid is used together with the ink composition for recording on a recording medium which is an impermeable substrate.

An ink set according to one embodiment of the present disclosure includes: a water-based ink composition containing a colorant; a first treatment liquid containing an aggregating agent; and a second treatment liquid containing an aggregating agent. In the ink set described above, a content of the aggregating agent in the first treatment liquid is 0.60 mol/kg or more, a content of the aggregating agent in the second treatment liquid is less than 0.60 mol/kg, the first treatment liquid is used together with the ink composition for recording on a recording medium which is a low-permeable substrate, and the second treatment liquid is used together with the ink composition for recording on a recording medium which is an impermeable substrate.

A medium includes a base; and a thermally expansive layer provided on the base, the thermally expansive layer including thermally expandable material, wherein the thermally expansive layer further includes a porous material.

A medium includes a base; and a thermally expansive layer provided on the base, the thermally expansive layer including thermally expandable material, wherein the thermally expansive layer further includes a porous material.

A film media kit includes a first part and a second part. The first part is a first transparent film element having a first film having front side and back sides, wherein the front side is a high gloss smooth surface and wherein the back side supports an image-receiving layer for receiving a mirror-reflected reversed image printed on top of the image-receiving layer. The second part includes a second transparent film element having a second film having front and back sides, wherein the front side supports an adhesion layer and the back side supports a light diffusion layer. The second part also includes a third film element having a third film/paper having front and back sides, wherein the back side supports an anti-block layer. A method of manufacturing the film media kit and a film media for both front-lit and back-lit viewing are also provided.

A film media kit includes a first part and a second part. The first part is a first transparent film element having a first film having front side and back sides, wherein the front side is a high gloss smooth surface and wherein the back side supports an image-receiving layer for receiving a mirror-reflected reversed image printed on top of the image-receiving layer. The second part includes a second transparent film element having a second film having front and back sides, wherein the front side supports an adhesion layer and the back side supports a light diffusion layer. The second part also includes a third film element having a third film/paper having front and back sides, wherein the back side supports an anti-block layer. A method of manufacturing the film media kit and a film media for both front-lit and back-lit viewing are also provided.

Provided are a method for producing a printed matter and a printing machine which suppress the decrease of transferability and improve adhesiveness between ink and a film substrate when ink is printed on the film substrate. The method for producing a printed matter of the present invention is a method for producing a printed matter by printing ink on a film, which uses a film having a nitrogen element concentration of 0.5 to 10.0 atom % in the film surface, and includes irradiating with an active energy ray after printing.