JPS62120758U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a schematic side view showing an embodiment of the present invention, Figure 2 (a) is an explanatory diagram showing an example of a copy object, and Figure (b) shows a thin copy of the characters in Figure (a). 3A is an explanatory diagram showing an example of a copied object; FIG. 3B is an explanatory diagram showing a partially enlarged copy of FIG. FIG. 1B is an explanatory diagram showing a copy in which the blacked out portions in FIG. 1A are replaced with a certain pattern. 1 is a scanning mirror, 2 and 7 are polygon mirrors, 3 is an original, 4 is an original table, 5 is a lens, 6
1 is an optical path correction mirror, 8 is a shutter means, 9 is a photosensitive drum, 10 is a semiconductor laser, 11 is a detection control device, 12 is a scanning means, and 13 is a light guiding means.

Claims (1)

[Scope of utility model registration request] a laser irradiator that oscillates a laser beam; a scanning means for scanning a copying area of an object placed on a document table with the laser beam irradiated by the laser irradiator; a light guiding means for guiding the laser beam obtained by reflection on the object to be copied onto the photosensitive drum; a shutter means disposed on the optical path of the laser beam guided by the light guiding means; the laser irradiator; the scanning means; An electrophotographic dry type copying machine comprising a detection control device that detects the states of a photosensitive drum, a light guide means, and a shutter means and controls these.