JPH07104567A - Method for retreating exposure part in electrophotographic printing device - Google Patents

Abstract

PURPOSE:To simplify operation by a user, to reduce the cost of a device, and to prolong the life of the device by setting an exposure part at an exposure feasible position interlocked with operation for attaching a photoreceptor unit. CONSTITUTION:A lever 13 coupling a sliding or rotating mechanism, a photoreceptor positioning reference part 10 and an exposure part positioning reference part 12 is provided in the exposure part 1 positioned at the upper part of the photoreceptor unit 3. By transmitting and driving by the attaching/ detaching operation of the unit 3 so that the exposure part 1 is retreated from the attaching/detaching path of the unit 3, the unit 3 is attached/detached to the upper part. By retreating the exposure part 1 from the upper part of the unit 3, the unit 3 is easily taken out to the upper part without dividing the printing device into the upper and lower parts, and the time required for exchanging is shortened. The exposure part 1 is moved to be housed in the cover 11 in the printing device, and the exposure part 1 is protected from an external fault factor.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Industrial field of application The present invention sets or exposes an exposure unit at a position where an exposure unit can be exposed without manpower by mounting or taking out a photosensitive unit in an electrophotographic printer. The present invention relates to a device that can be retracted from the attachment / detachment path of a body unit. (2) Conventional Technology In the conventional technology, when the photoconductor unit is attached or detached, the first
Since the exposure unit is located above the photoconductor unit as shown in the figure, it is necessary to divide the printing position vertically as shown in FIG. (3) Problem to be Solved by the Invention In the conventional technique, it is necessary to divide the printing apparatus into upper and lower parts and to lift the upper unit in order to attach and detach the photoconductor unit, which requires a great deal of labor. In addition, parts such as an upper unit supporting member and a positioning member for the upper and lower units are required to divide the upper and lower parts, and further, the internal parts may be damaged by an impact caused by opening and closing the upper and lower units. The present invention eliminates such problems, simplifies user operation, and realizes low cost and long life of the device. (4) Means for Solving the Problems In the present apparatus, the exposure unit located above the photoconductor unit has a slide or rotation mechanism as shown in FIGS. 3 and 4, a photoconductor positioning reference unit and an exposure unit positioning reference. That is, a photosensitive member unit can be attached and detached upward by providing a lever for connecting the portions, and transmitting drive from the attaching and detaching operation of the photosensitive member unit to retract the exposure portion from the attaching and detaching path of the photosensitive member unit. (5) Operation According to the present apparatus, the exposure unit is retracted from above the photoconductor unit, so that the photoconductor unit can be easily taken out upward without dividing the printing apparatus into upper and lower parts. Further, by moving the exposure unit, the exposure unit can be housed in a cover or the like inside the printing apparatus, and the exposure unit can be protected from an external failure factor. (6) Effects of the Invention This device has the effects described below. a) Since the photoconductor unit can be taken out upward, the operation of vertically dividing the printing device is not necessary, and the time required for replacement is shortened. b) Since the photoconductor unit can be taken out upward, there is no need to divide the printing device into upper and lower parts, and the parts required for the division can be reduced. c) Since the photoconductor unit can be taken out upward, there is no impact when the printer is opened and closed up and down each time maintenance is performed, and the life of the printer is extended. d) By storing the exposure unit in the cover, it is possible to prevent an operator from easily touching the light emitting unit and maintain image quality.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an internal configuration diagram of an electrophotographic printing apparatus. FIG. 2 is a view showing a state in which a photoconductor unit of a conventional electrophotographic printer is taken out. FIG. 3 is a view showing a mechanism by which the exposure unit can be rotationally retracted or set to an exposure possible position by attaching and detaching the exposure unit. FIG. 4 is a view showing a mechanism by which the exposure unit can be slid and retracted or set to the exposure possible position by attaching and detaching the photoconductor unit. Drawing Elements 1: Exposure unit 2: Photoconductor 3: Photoconductor unit 4: Developing device 5: Paper 6: Transfer device 7: Upper unit opening / closing fulcrum 8: Upper unit support member 9: Upper unit positioning member 10: Photoconductor unit Positioning reference part 11: Cover 12: Exposure part positioning reference part 13: Lever 14: Lever rotation fulcrum 15: Guide rail 16: Exposure part slide guide 17: Photoconductor unit positioning shaft

Claims (1)

Claims: (1) In an electrophotographic printer in which a photoconductor unit is detachable, the exposure unit is set at a position where it can be exposed in association with the operation of mounting the photoconductor unit. To do. (2) In the electrophotographic printing apparatus in which the photoconductor unit is detachable, the exposure unit is retracted from the insertion path (or the takeout path) of the photoconductor unit in association with the operation of taking out the photoconductor unit. . (3) In the electrophotographic printing apparatus in which the photoconductor unit is detachable, the exposure section is housed in a protective cover in the printing apparatus in association with the operation of taking out the photoconductor unit. (4) In the device of (1, 2, 3), a lever for connecting the positioning reference portion of the photoconductor unit and the positioning reference portion of the exposure portion is provided, and the exposure portion is retracted by sliding. apparatus. (5) In the above (1, 2, 3) apparatus, a lever for connecting the positioning reference part of the photoconductor unit and the positioning reference part of the exposure part is provided, and the exposure part is retracted by rotation. apparatus.