Method of manufacturing image forming apparatus

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the drawings, preferred embodiments of this invention will be explained in an illustrating manner and in detail.
But, there is no intention to limit a scope of this invention to dimensions, materials, and shapes of components described in the embodiments, relative configurations thereof, and so on, unless otherwise described specifically.
(First Embodiment) A first embodiment will be explained with reference to FIG.
1 to FIG.
9.
In the first embodiment and second and third embodiment which will be described later, used is a display panel in which SCE-emitters were disposed.
Since a structure and a manufacturing method of the display panel of an image forming apparatus to which the invention was applied are described in detail in the above-described literature 1 and literature 2, they will be omitted.
A concrete structure of the embodiment will be described in detail.
Inventors of the present invention found, in advance of a normal drive in a manufacturing process, that variation over time can be reduced by carrying out a preliminary drive processing.
In the embodiment, since adjustment of characteristics and the preliminary drive of the electron source is carried out integrally, firstly, the preliminary drive will be described briefly.
In addition, detail of the preliminary drive is described in the above-described literature 2.
After energization forming process and energization activation process, the emitter is held in a stable situation with reduced partial pressure of an organic matter.
An energization process which is applied in advance of the normal drive under an atmosphere with reduced partial pressure of the organic matter in such vacuum atmosphere (stable situation) is the preliminary drive.
After the drive is carried out for a while with voltage of the preliminary drive voltage Vpre, the normal drive is carried out at the normal drive voltage Vdrv so as to lessen electric field strength.
It seems that, by carrying out the drive in advance with large electric field strength for an electron emission part of the emitter by use of such drive using application of Vpre voltage, changes of constituent members which causes instability of a time-lapse characteristic are caused in a brief period of time and in a concentrated manner, and variable factors at the time of long-hour drive with the normal drive voltage Vdrv which causes a low electric field can be reduced