| 摘要 |
PROBLEM TO BE SOLVED: To obtain a stable light quantity and to reduce light emission variance of an element when an organic EL element is used as a light emitting element of an image forming apparatus. SOLUTION: Pixels Sb and Se on a pixel line Wx shown in Fig.(d) are print parts and pixels Sa, Sc, and Sd are non-print parts. In an area Ex, Three light emitting lines U1, U2 and U3 are arranged in a vertical scanning direction X. When multiple exposure is carried out, organic EL elements Ra corresponding to the non-print parts are turned on during one horizontal scan in (a). In (b), organic EL elements Rg corresponding to the non-print parts are turned on during one horizontal scan and in (c), organic EL elements RI corresponding to the non-print parts are turned on during one horizontal scan in (c). COPYRIGHT: (C)2004,JPO
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