JPH0324660U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a dust-proof structure of a light exit window in a laser printer which is an embodiment of this invention;
Fig. 2 is a sectional view showing the internal structure of the dustproof cassette, Fig. 3 is a sectional view taken along line A-A in Fig. 2,
FIG. 4 is a general schematic diagram showing the internal mechanism of the laser printer according to this invention, and FIG. 5 is a schematic plan view of the optical writing means thereof. L... Laser light (light), 11... Image carrier, 16...
Optical writing means, 40... Storage case (cover), 4
DESCRIPTION OF SYMBOLS 1... Light exit window, 47... Deflector, 50... Dustproof cassette, 51b... Light exit opening, 55... Feeding shaft, 56
... Winding shaft, 57 ... Transparent tape, 61 ... Positioning section (positioning means), 62 ... Drive means.

Claims (1)

[Claims for Utility Model Registration] Light is emitted from a light source in a cover of an optical writing means, is deflected by a deflector, is emitted to the outside of the optical writing means through a light exit window of the cover, and an image is carried by the emitted light. A dust-proof cassette for an electrophotographic device that scans the body surface, which is equipped with a light exit port, stores a transparent tape that blocks the light exit port, and feeds out the transparent tape from a feeding shaft and winds it up on a take-up shaft, and the dust-proof cassette. positioning means for aligning the light exit opening with the light exit window and replacingly covering the dustproof cassette over the light exit window, and engaging the winding shaft when the dustproof cassette is attached by the positioning means; An electrophotographic device comprising: a driving means for rotating the electrophotographic device;