Image forming apparatus

Abstract

The image forming apparatus has a shear mode liquid ejection head for ejecting ink, the shear mode liquid ejection head including: a pressure chamber into which the ink is filled; and a liquid affinity film which is made from a material containing a polyparaxylylene or a derivative of polyparaxylylene and is formed on an interior wall of the pressure chamber, wherein the ink is an oil-based ink containing a radiation-polymerizable compound.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The nature of this invention, as well as other objects and benefits thereof, will be explained in the following with reference to the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures and wherein:

FIGS. 1A and 1B are cross-sectional diagrams of a liquid ejection head forming an image forming apparatus according to an embodiment of the present invention;

FIG. 2 is a general schematic drawing of an inkjet recording apparatus forming an image forming apparatus according to an embodiment of the present invention;

FIG. 3 is a principal plan diagram of the peripheral area of a print unit in the inkjet recording apparatus shown in FIGS. 1A and 1B; and

FIG. 4 is a block diagram showing the system configuration of an inkjet recording apparatus forming an image forming apparatus according to an embodiment of the present embodiment.

Claims

1. An image forming apparatus having a shear mode liquid ejection head for ejecting ink, the shear mode liquid ejection head comprising: a pressure chamber into which the ink is filled; anda liquid affinity film which is made from a material containing a polyparaxylylene or a derivative of polyparaxylylene and is formed on an interior wall of the pressure chamber,wherein the ink is an oil-based ink containing a radiation-polymerizable compound.

2. The image forming apparatus as defined in claim 1, wherein the radiation-polymerizable compound is a cationic polymerization compound.

3. The image forming apparatus as defined in claim 1, wherein the liquid affinity film is formed all over the interior wall of the pressure chamber.