An ink contains water, a pigment, and a polymer having a structure unit represented by the following Chemical structure 1, ##STR00001## where R.sub.1 represents an organic group having at least carbon and oxygen.

An inkjet ink contains a pigment, a pigment dispersion resin, a water-soluble organic solvent, and a polymer nonionic surfactant. The pigment dispersion resin has an acid value of at least 55 mgKOH/g and no greater than 97 mgKOH/g. The polymer nonionic surfactant has a mass average molecular weight of at least 7,000 and no greater than 12,500. An inkjet recording apparatus includes a linehead and a conveyance section which conveys a recording medium. The linehead ejects the above inkjet ink onto the recording medium.

An aqueous polymeric particle dispersion, the particle comprises a polymer and a Si—O-containing moiety, the Si—O-containing moiety is linked to the polymer. The polymeric particle dispersion can be incorporated in aqueous printing liquids such as aqueous inkjet inks.

An aqueous polymeric particle dispersion, the particle comprises a polymer and a Si—O-containing moiety, the Si—O-containing moiety is linked to the polymer. The polymeric particle dispersion can be incorporated in aqueous printing liquids such as aqueous inkjet inks.

A printing system comprises a transport apparatus adapted to transport a flexible web (24) along a process direction and first and second individually controllable inkjet imager units (44, 60, 70, 82) offset from one another along the process direction. Each of the first imager unit and the second imager unit includes a first portion (226) operable to print on a first portion of the web and a second portion (228) operable to print on the second portion of the web wherein each of the first portion and second portion of the first and second imager units is stationary along the process direction and the lateral direction.

A direct conversion x-ray detection apparatus having a planar x-ray detection layer having a detection layer upper surface and a detection layer lower surface, the planar x-ray detection layer including a lead halide perovskite material; a top electrode layer above the detection layer upper surface; a bottom electrode layer below the detection layer lower surface and in conductive communication with the top electrode layer through the x-ray detection layer to apply a bias voltage across the x-ray detection layer; and a blocking layer between the x-ray detection layer and the top electrode layer to inhibit a dark current, the blocking layer including a polymer selected from the group comprising polyacrylates, polyimides, polyamides, polysulfones, polystyrenes, and polycarbonates.

An aqueous ink for ink jet recording contains a titanium oxide particle containing titanium oxide, at least part of the surface of the titanium oxide being covered with alumina and silica in specific proportions, and a compound serving as a dispersant for the titanium oxide particle, the compound being represented by the following general formula (1):

##STR00001##

where in general formula (1), R.sub.1, R.sub.2 and R.sub.3 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, each R.sub.4 is independently an alkylene group having 2 to 4 carbon atoms, X is a single bond or an alkylene group having 1 to 6 carbon atoms, n is 6 to 24, a is 1 to 3, b is 0 to 2 and a + b = 3.

An aqueous ink for ink jet recording contains a titanium oxide particle containing titanium oxide, at least part of the surface of the titanium oxide being covered with alumina and silica in specific proportions, and a compound serving as a dispersant for the titanium oxide particle, the compound being represented by the following general formula (1):

##STR00001##

where in general formula (1), R.sub.1, R.sub.2 and R.sub.3 are each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, each R.sub.4 is independently an alkylene group having 2 to 4 carbon atoms, X is a single bond or an alkylene group having 1 to 6 carbon atoms, n is 6 to 24, a is 1 to 3, b is 0 to 2 and a + b = 3.

A method of printing with coffee-based ink comprises providing a thermal ink-jet cartridge having a quantity of a coffee-based ink disposed within; receiving optical density data from a user via a touch-screen computerized interface, where the data describes an optical density of the coffee-based ink present within an ink-jet pod; and computing a customized droplet-size for the coffee-based ink in its current state within the thermal ink-jet cartridge. A suitable printing apparatus can include coffee-based ink in a cartridge, an image-processing system, an image processing module for determining, inter alia, droplet size and missing/defective nozzles, and a nozzle-compensation module. Suitable ink formulations are human-edible and aqueous.

A method of printing with coffee-based ink comprises providing a thermal ink-jet cartridge having a quantity of a coffee-based ink disposed within; receiving optical density data from a user via a touch-screen computerized interface, where the data describes an optical density of the coffee-based ink present within an ink-jet pod; and computing a customized droplet-size for the coffee-based ink in its current state within the thermal ink-jet cartridge. A suitable printing apparatus can include coffee-based ink in a cartridge, an image-processing system, an image processing module for determining, inter alia, droplet size and missing/defective nozzles, and a nozzle-compensation module. Suitable ink formulations are human-edible and aqueous.