发明名称 ELECTROPHOTOGRAPHIC DEVICE
摘要 PROBLEM TO BE SOLVED: To inexpensively and easily adjust the density of a recorded image by providing an adjusting means variably adjusting the moving position of an exposure unit. SOLUTION: A rotary knob 36 is provided at the upper part of the side surface of a main body 1, and a rod 37 is connected to the knob 36. Plural cams 38 are attached to the rod 37 and the housing of the exposure unit 2 abuts on the peripheral surface of the cam 38. The exposure unit 2 is moved up and down with the turning of the rod 37 and the cam 38 based on the operation of the knob 36. When the knob 36 is set to density set position height, the short part of the radial direction of the cam 38 abuts on the unit 2 and the unit 2 is pushed up by the biasing force of a spring. A distance between the unit 2 and a photoreceptor drum 3 is made longer than the focal distance of the lens system of the unit 2. In such a case, a laser beam is spread, so that the distribution of irradiation where a spot diameter is large is obtained on the drum 3 and the density of the image is made high.
申请公布号 JP2001021826(A) 申请公布日期 2001.01.26
申请号 JP19990196268 申请日期 1999.07.09
申请人 TOSHIBA TEC CORP 发明人 KOJIMA TAKAHIRO
分类号 B41J2/44;G02B26/10;G03G15/04;(IPC1-7):G02B26/10 主分类号 B41J2/44
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