Ink Composition Preventing Premature Cross-Linking

The patent applies preliminary action by incorporating reactive functional groups into polymer particles that remain dormant during ink storage and application. The cross-linking reaction is triggered only after ink ejection onto the substrate through exposure to specific conditions (heat, light, or chemical environment), ensuring image strength enhancement occurs at the desired location and time without causing nozzle clogging during the printing process.

The patent applies local quality by creating spatial differentiation in the cross-linking state: the ink formulation contains reactive polymer particles that remain un-crosslinked and dispersible in the liquid ink state for easy re-dispersion and nozzle flow, while undergoing cross-linking only after deposition on the substrate to provide rub-off resistance. This localized transformation ensures both ease of operation during printing and image durability after formation.

The patent incorporates reactive functional groups into polymer particles during manufacturing as a preliminary preparation, but designs the system so that the actual cross-linking reaction does not occur during storage. The reactive groups remain dormant until triggered by post-deposition conditions (heat, light, or chemical environment on the substrate), thereby maintaining storage stability while enabling image strength enhancement when needed.