1. Field of the Invention
The invention relates to an image forming method for forming an image by jetting ink from an inkjet head equipped with a nozzle plate having ejection orifices (nozzles) for ink provided therein.
2. Related Art
Various information processing systems have been developed concomitantly with the rapid progress in the information technology industry of recent years, and in addition, recording methods and recording apparatuses appropriate for the respective information processing systems are being put to practical use.
Among these, inkjet recording methods have been widely used because of their advantages that recording can be carried out in a variety of materials, that the hardware (apparatus) is relatively inexpensive and compact, that the method is excellently quiet, and the like. Recording performed by using an inkjet recording method also makes it possible to obtain so-called photograph-like high quality recorded matters. Furthermore, inkjet recording methods making use of pigment inks are generally considered to have better keeping qualities than inkjet recording methods making use of dye inks.
Accordingly, a method for forming an image on a non-porous substrate other than paper substrate, for example, a plastic substrate, using an inkjet method has been recently proposed. For example, an inkjet ink containing a pigment colorant bound to a polymer, and a water-based liquid vehicle containing acid-functionalized polymer colloidal particles and a volatile co-solvent having a boiling point of 285° C. or lower have been disclosed, and this inkjet ink is considered to have excellent adherence to non-porous substrates (see, for example, Japanese Patent Application Laid-Open (JP-A) No. 2005-220352).