Power supply control device for an image forming apparatus

[0018]Referring to FIG. 1 of the drawings, an image forming apparatus embodying the present invention is shown and implemented as a color copier by way of example. As shown, the color printer, generally 1, is made up of a copier body 2, an ADF (Automatic Document Feeder) 3, and a sorter 4.

[0019]The copier body 2 includes a scanning unit 5, a writing unit 6, an engine 7, and a sheet feeding unit 8. The scanning unit 5 includes a carriage 9 loaded with a plurality of mirrors 9, a lens 10, a CCD (Charge Coupled Device) image sensor 11, and a buffer 12. The scanning unit 5 scans a document fed from the ADF 3 to thereby read the image of the document. The writing unit 6 includes a laser or light source and a polygonal mirror and emits a laser beam 13 modulated in accordance with image data representative of the document image toward the engine 7.

[0020]As shown in FIG. 2, the engine 7 includes an image forming unit 14, a primary image transferring unit 15, a secondary image transferring unit