197results about How to "Excellent printing durability" patented technology

A method of printing an image with a continuous inkjet printer system employing bimodal drop size generation with pigmented inkjet ink compositions comprising a polymer additive, wherein the liquid ink is an aqueous inkjet ink comprises dispersed pigment colorant particles having a mean particle size of less than 150 nanometers and at least about 0.1 wt % of polymer additive distinct from any polymer dispersant used to disperse the pigment particles, and recirculating liquid ink supplied to the nozzle if the printer system from a liquid ink source is in-line filtered with a filter selected to be effective at retaining particles having particle sizes equal to and greater than 0.6 micrometers from the liquid ink and to pass the dispersed pigment particles. The invention enables high quality drop control in a continuous inkjet printing system.

The invention provides a planographic printing plate precursor which is capable of providing a planographic printing plate in which ablation at the time of infrared laser exposure is inhibited and which has excellent develop ability of a non-image portion and printing durability of an image portion. The photosensitive planographic printing plate precursor, includes: an image recording layer on a hydrophilic support, the image recording layer including: (A) an infrared absorber; and (B) a copolymer having a repeating unit having a zwitterionic structure in a side chain thereof, and a repeating unit having a heteroalicyclic structure or a repeating unit having a hetero atom and an alicyclic structure in the main chain thereof.

This invention provides a positively chargeable toner for electrostatic charge image development which can also be used with a toner supply-type image forming apparatus and, in the supply of a toner, can realize no significant fogging and imparting of temporally stable electrification properties and fluidity to toner particles, and, even in continuous printing of a number of sheets, can realize an excellent hairline reproducibility in a print, and, even under a high-temperature and high-humidity environment, is less likely to cause a deterioration in image quality due to fogging or the like and can realize excellent print durability. The positively chargeable toner for electrostatic charge image development comprises a binder resin, colorant-containing colored resin particles, and an external additive. The external additive contains fine particles of spherical colloidal silica having a number average primary particle diameter of 30 to 80 nm and a triboelectrification amount of -50 to +300 [mu]C / g, and fine particles of fumed silica having a number average primary particle diameter of 5 to 25 nm. The content of the fine particles of spherical colloidal silica and the content of the fine particles of fumed silica are 0.3 to 2 parts by weight and 0.1 to 1 part by weight, respectively, based on 100 parts by weight of the colored resin particles.