JPH0566623A - Electrophotographic device - Google Patents

Abstract

PURPOSE:To provide an electrophotographic device having less members for guiding a form, and further, easily executing maintenance and jamming processing. CONSTITUTION:A hausing 1 incorporating a form carrying path 15 and an optical unit 23 located in the upper part of the path 15, is provided, an image forming unit 24 constituted by fitting a photosensitive body 32 and a developing part 26 to a basket 27, is detachably fitted to the case body 1, and a form guiding surface 28 opposite to the form guiding path 15 is formed on the bottom surface of the basket 27. Therefore, a guiding plate on the form carrying path 15 is omitted and further, the image forming unit 24 is removed from the hausing 1. Thus, the image forming unit 24, itself is checked and adjusted, in a wide space outside the hausing 1, as well, and moreover, the opening degree of the form carrying path 15 is increased, to easily executed the maintenance and jamming processing.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an electrophotographic apparatus.

[0002]

2. Description of the Related Art This type of electrostatic latent image is provided by an optical unit between a paper feed path from a paper feed section, a transfer section to a fixing section, and an optical unit located above the paper feed path. In many cases, a photoreceptor on which an image is formed and a developing section are arranged.

[0003]

In the conventional structure described above, the number of parts is increased because the paper transport path cannot hold the floating of the paper unless the guide plates face each other vertically.
Moreover, since the guide plates face each other in the vertical direction, even if the photoconductor and the developing unit are individually removed, the paper transport path cannot be completely opened, and maintenance and jam processing are troublesome.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a housing in which a paper feed path from a paper feed section to a transfer section to a fixing section and an optical unit located above the paper feed path are provided. An image in which a basket having a paper guide surface facing the paper transport path is formed on the lower surface, and a rotatable photoconductor on which an electrostatic latent image is formed by the optical unit and a developing unit are mounted on the basket. The forming unit is detachably attached to the housing.

[0005]

By forming the paper guide surface on the lower surface of the basket of the image forming unit, the guide plate on the upper side of the paper conveying path is omitted, and by removing the image forming unit from the housing, the degree of opening of the paper conveying path is increased. Therefore, maintenance and jam handling are facilitated.

[0006]

An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a housing. The housing 1 is formed by connecting a base cover 2 and an upper cover 3 and one end of a top cover 4 is attached to an upper portion of one end of the upper cover 3 so as to be vertically rotatable. A power supply unit 5 and a PC board 6 connected to the power supply unit 5 are attached to the base cover 2, and a paper feed cassette 8 as a paper feed unit for holding paper 7 is detachably attached to the upper cover 3. ing. Further, a paper transport path 15 is formed by arranging a plurality of guide plates 11, 12, 13, 14 between the paper feed cassette 8 and the transfer section 9 to the fixing section 10, and the paper transport path 15 is formed in the paper transport path 15. A paper feed roller 17, a paper feed roller 18, and a pressing roller 19 are provided along the paper feed path 17, and paper discharge rollers 21 and 22 are provided at both ends of a paper discharge path 20 from the rear end of the paper transport path 15 to the upper surface of the housing 1. Has been. Further, an optical unit 23 is fixed to the lower surface of the top cover 4.

Next, an image forming unit 24 located between the sheet conveying path 15 and the optical unit 23 is detachably attached to the upper cover 3. The image forming unit 24 has a photoconductor block 25 and a developing unit 26 housed in a basket 27 having an upper surface opening. On the lower surface of the basket 27, a paper guide surface 28 facing the paper conveying path 15 and a transfer surface 28 are formed. An opening 29 facing the portion 9 and an opening 30 facing the pressing roller 19 are formed (see FIG. 3).

As shown in FIGS. 2 and 3, the photoconductor block 25 includes a waste toner container 31, a photoconductor 32, a charging section 33, and a waste toner feed roller 34.
A cleaning blade 36 that comes into contact with the photoconductor 32 is attached to the lid 35 of the waste toner container 31. The other developing unit 26 has a toner container 37 to which a magnetic brush roller 38, a stirring blade 39, and a blade 40 that contacts the magnetic brush roller 38 are attached, and a toner cartridge 41 is attached to the opening of the toner container 37. . Further, as shown in FIG. 2, on both sides of the basket 27, openings 42 for projecting the shaft portions 32a projecting from both ends of the photoconductor 32 and a shaft 37a projecting from both sides of the toner container 37 are provided.
Is formed with an opening 43 and two mounting shafts 44. Then, as shown in FIG.
A notch 45 of an upper opening for supporting 4 is formed on both side surfaces of the upper cover 3.

In such a structure, the photosensitive member 32 is charged by the charging unit 33 in the process of being rotated, and a laser beam is scanned from the optical unit 23 to the charged unit to form an electrostatic latent image. The image is developed by the developing unit 26, and the developed image is transferred by the transfer unit 9 onto the sheet 7 conveyed from the paper feeding cassette 8. The sheet 7 on which the image has been transferred is fixed by the fixing unit 10, and the sheet discharge roller 2
1 and 22 and is discharged from the paper discharge passage 20 to the upper surface of the housing 1.

By the way, as shown in FIG. 4, when the top cover 4 is rotated upward and the image forming unit 24 is taken out from the opening in the upper portion of the upper cover 3, the upper surface of the sheet conveying path 15 is opened. This facilitates maintenance and jam handling. The inspection and adjustment of the image forming unit 24 itself can be easily performed in a wide space outside the housing 1. Further, the paper guide surface 2 is provided on the bottom surface of the basket 27.
By forming 8, the guide plate facing the paper transport path 15 can be omitted and the structure can be simplified.

[0011]

According to the present invention, there is provided a housing in which a paper feed path from the paper feed section to the fixing section and the optical unit located above the paper feed path are provided. An image forming unit is provided in which a basket having a paper guide surface facing the sheet is formed on the lower surface, and a rotatable photoconductor on which an electrostatic latent image is formed by the optical unit and a developing unit are mounted on the basket. Since it is detachably attached to the housing, the guide plate on the upper side of the paper transport path can be omitted by forming the paper guiding surface on the lower surface of the basket of the image forming unit, and the image forming unit can be removed from the housing. By removing it, the image forming unit itself can be easily inspected and adjusted in a large space outside the housing, and the openness of the paper transport path can be increased.
As a result, there is an effect that maintenance and jam processing can be easily performed.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view.

FIG. 2 is an exploded perspective view of an image forming unit.

FIG. 3 is a vertical sectional side view of the image forming unit.

FIG. 4 is an exploded perspective view showing a reduced mounting relationship of the image forming unit with respect to the housing.

[Explanation of symbols]

 1 Housing 8 Paper Feeding Section 9 Transfer Section 10 Fixing Section 15 Paper Conveying Path 23 Optical Unit 24 Image Forming Unit 26 Developing Section 27 Basket 28 Paper Guide Surface 32 Photoreceptor

Claims (1)

[Claims] 1. A sheet facing a sheet conveying path, comprising a housing containing a sheet conveying path from a sheet feeding section to a fixing section and an optical unit located above the sheet conveying path. An image forming unit is provided in which a basket having a guide surface formed on the lower surface is provided, and a rotatable photoconductor on which an electrostatic latent image is formed by the optical unit and a developing unit are attached to the basket. An electrophotographic device characterized by being mounted freely.