Abstract: A liquid for inkjet printing comprising resin particles, the resin particles are obtainable by reaction between a polyamine crosslinker comprising at least two primary or secondary amines and a quaternary ammonium group and a compound comprising two functional groups capable of reacting with the primary or secondary amines of the crosslinker. The liquids for inkjet printing can be pre-treatment compositions, aqueous inkjet inks and overcoat varnishes.

Abstract: A pre-treatment composition for inkjet printing, comprising water, a water-soluble multi-valent metallic salt, a wax, a non-ionic dispersant and a resin particle, the resin particle is stabilized by a non-ionic group or non-ionic or amphiphilic compound. A fluid set comprising the pre-treatment composition and an aqueous inkjet ink is suitable for printing liners for corrugated packaging, folding boards or a corrugated card boards.

Abstract: The present application discloses a screen projecting method, an apparatus, a device and a storage medium. A specific implementation is: receiving a request for screen projecting from a terminal device, where the request for screen projecting includes indication information of content to be screen-projected; acquiring the content to be screen-projected according to the request for screen projecting; receiving a first initiating message of at least one screen projecting source from a target projecting device, and determining a target screen projecting source from the at least one screen projecting source; and sending the content to be screen-projected and an identifier of the target screen projecting source to the target projecting device, where the identifier of the target screen projecting source indicates to the target projecting device to display the content to be screen-projected through the target screen projecting source.

Abstract: The present application discloses a screen projecting method, an apparatus, a device and a storage medium. A specific implementation is: receiving a request for screen projecting from a terminal device, where the request for screen projecting includes indication information of content to be screen-projected; acquiring the content to be screen-projected according to the request for screen projecting; receiving a first initiating message of at least one screen projecting source from a target projecting device, and determining a target screen projecting source from the at least one screen projecting source; and sending the content to be screen-projected and an identifier of the target screen projecting source to the target projecting device, where the identifier of the target screen projecting source indicates to the target projecting device to display the content to be screen-projected through the target screen projecting source.