JP2002328581A - Cartridge of electrophotographic image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cartridge which can be freely attached to and detached from the main body of an electrophotographic image forming device and which can decrease the load on the environment without decreasing the quality and productivity of products. SOLUTION: The cartridge can be freely attached to and detached from the device body and has at least one unit of (A) a cleaning unit 14 which supports a photoreceptor drum as rotatable, (B) a developing unit 19 which supports a developing roller and (C) a developer housing unit 50 which houses the developer. Parts of the unit are partially made of a composition containing 125 parts by mass of nonhalogen phosphate condensed product to 100 parts by mass of a resin composition containing 95 to 50 parts by mass of a polystyrene resin and 5 to 50 parts by mass of a polyphenylene ether resin. The nonhalogen phosphate condensed product contains at least bisphenol-A bis(diphenyl)phosphate or resorcinol bis(di-2,6-xylenyl) phosphate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for a unit and a frame constituting a cartridge which is detachable from a main body of an electrophotographic image forming apparatus such as a laser printer or a copying machine which employs an electrophotographic system. The present invention relates to a synthetic resin material.

Here, the electrophotographic image forming apparatus forms an image on a recording medium using an electrophotographic image forming method. Examples of the electrophotographic image forming apparatus include, for example, an electrophotographic copying machine, an electrophotographic printer (for example, a laser beam printer, an LED printer, and the like), a facsimile machine, a word processor, and the like.

The above-mentioned cartridge is a charging means,
The developing means or the cleaning means and the electrophotographic photosensitive member are integrally made into a cartridge, and this cartridge is made detachable from the image forming apparatus main body. In addition, at least one of the charging means, the developing means, and the cleaning means and the electrophotographic photosensitive member are integrally made into a cartridge so that the cartridge can be attached to and detached from the image forming apparatus main body. Further, it means that at least the developing means and the electrophotographic photosensitive member are integrally formed into a cartridge so as to be detachable from the image forming apparatus main body.

[0004]

2. Description of the Related Art In an image forming apparatus using electrophotography, if the image forming apparatus is used for a long time, the photosensitive drum is replaced, the developer is replenished or replaced, and the like (charger, cleaning container, etc.)
Adjustment, cleaning, and replacement are required, but such maintenance work has been practically difficult except for service personnel with specialized knowledge.

Therefore, in an image forming apparatus using an electrophotographic image forming process, for example, an electrophotographic photosensitive member and process means acting on the electrophotographic photosensitive member are integrally formed into a cartridge, and this cartridge is mounted on the main body of the image forming apparatus. A process cartridge system which can be attached to and detached from is used. According to this process cartridge system,
Since the maintenance of the apparatus can be performed by the user himself without relying on a service person, the operability can be remarkably improved. For this reason, the process cartridge system is widely used in image forming apparatuses.

With the cartridge having such a configuration, if maintenance is required for the above process equipment, the user can easily perform maintenance and replacement by himself / herself, and high quality image quality can be obtained at low cost. Also, it has become easier to obtain.

Referring to FIG. 3 of the embodiment of the present invention,
In the electrophotographic image formation including such a cartridge, the cartridge includes a cleaning frame 14, which integrally supports a photosensitive drum 15, a charging roller 17, and a cleaning blade 16, a developing roller 20s, and a developing blade (not shown). ) That integrally supports the developing frame 1)
9, a developer accommodating frame (hereinafter referred to as a toner frame) 50 accommodating toner. Further, in order to support the cleaning frame and the developer accommodating frame, the side surfaces at one end and the other end of the cleaning frame and the developer accommodating frame are sandwiched between side covers 37 and 38, respectively, so as to be close to or close to each other. The process cartridge is formed by injecting and joining the molten resin into a molten resin injection portion, which is a space formed between the opposing surfaces of the frame bodies in contact with each other.

Further, in order to ensure fire safety, a flame retardant is added to the material of each frame constituting the process cartridge.
(Laboratory) Impact-resistant polystyrene that satisfies the V2 standard of the vertical combustion test.

[0009]

However, the above process cartridge has the following problems.

[0010] The flame retardant added to the material of each frame constituting the process cartridge is bromine-based.
For example

[0011]

Embedded image Ethylene bispentabromobenzene having the structural formula of
Antimony trioxide (Sb ₂ O ₃ ) as a flame retardant aid is used in combination.

However, the specific brominated flame retardant D
Structural formula of BDPE (decabromodiphenyl ether):

[0013]

Embedded image However, the structural formula of dioxin, which is said to be highly harmful during combustion:

[0014]

Embedded image (The skeleton is ether-bonded with biphenyl and bromine is attached to it), which has been developed from the problem that dioxin may be generated. There is an increasing number of voices promoting "to non-bromination" throughout the year.

[0015] Specifically, in the Blue Angel of the Ecolabel, it is described that bromine-based flame retardants cannot be used in exterior parts of copiers and printers.

As will be described for confirmation, the flame retardant ethylene bispentabromobenzene added to the above-mentioned cartridge material has no possibility of generating dioxin since there is no ether bond connecting the benzene rings in its molecular structure. Is commonly used as an alternative to DBDPE.

The present invention has been made in view of the above-mentioned conventional points, and an object of the present invention is to achieve a reduction in environmental load without impairing the quality and productivity of a product. Without the use of brominated flame retardants, ・ Satisfies UL-V2 standard, ・ Has the same moldability as conventional materials, ・ Has the same molding shrinkage as conventional materials, ・ Conventional materials The present invention provides a cartridge which has a mechanical strength equal to or higher than that of the electrophotographic image forming apparatus using an impact-resistant polystyrene material and which does not generate dioxin during combustion.

[0018]

SUMMARY OF THE INVENTION The present invention relates to a cartridge detachably mountable to the main body of an electrophotographic image forming apparatus, the cartridge comprising (A) a cleaning unit for rotatably supporting an electrophotographic photosensitive drum; B) at least one of a developing unit for supporting a developing roller for developing a latent image formed on the electrophotographic photosensitive member, and (C) a developer accommodating unit for accommodating a developer used for development by the developing roller. A part of the components of at least one unit of the unit is based on 100 parts by mass of a resin composition containing 95 to 50 parts by mass of a polystyrene-based resin and 5 to 50 parts by mass of a polyphenylene ether-based resin. A non-halogen phosphate condensate formed from a composition containing 5 to 15 parts by mass of an acid ester condensate; A bis (diphenyl) phosphate, or resorcinol bis (di-2,6-xylenyl)
The present invention relates to a cartridge for an electrophotographic image forming apparatus, which contains at least a phosphate.

Further, the present invention provides a cartridge detachably mountable to the main body of the electrophotographic image forming apparatus, the cartridge comprising (A) a cleaning frame for rotatably supporting the electrophotographic photosensitive drum; A developing frame that supports a developing roller that develops a latent image formed on the electrophotographic photosensitive member;
(C) at least one frame of a developer accommodating frame for accommodating a developer used for development by the developing roller, wherein at least one of the frames is made of a polystyrene-based resin 95 to 5;
0 parts by mass and 100 parts by mass of a resin composition containing 5 to 50 parts by mass of a polyphenylene ether-based resin, are formed of a composition containing 5 to 15 parts by mass of a non-halogen phosphate condensate, The present invention relates to a cartridge for an electrophotographic image forming apparatus, characterized in that the halogen phosphate condensate contains at least bisphenol A bis (diphenyl) phosphate or resorcinol bis (di2,6xylenyl) phosphate.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings, taking an example of an electrophotographic photosensitive drum and a process cartridge having process means acting on the electrophotographic photosensitive drum.

A description will be given with reference to FIGS. In the following description, the “longitudinal direction” of the process cartridge refers to a direction crossing the transport direction of the recording medium and parallel to the recording medium.

[Description of Process Cartridge and Apparatus Main Body] FIG. 1 is a main cross-sectional view of a process cartridge according to the present invention, and FIG. 2 is a main cross-sectional view of an electrophotographic image forming apparatus (hereinafter, referred to as an image forming apparatus) according to the present invention. Is illustrated.

This process cartridge is provided with an image carrier and a process means acting on the image carrier. Here, as the process means, for example, there are a charging means for charging the surface of the image carrier, a developing device for forming a toner image on the image carrier, and a cleaning means for removing toner remaining on the surface of the image carrier.

The process cartridge 13 of the present embodiment
As shown in FIG. 1, a charging roller 17 serving as charging means is provided around an electrophotographic photosensitive drum (hereinafter referred to as a photosensitive drum) 15 serving as an image carrier, and a developing roller 20s and a developing blade 20b serving as a developing device. A developer accommodating frame body 50 accommodating toner, and a cleaning blade 16 as cleaning means are arranged, covered with a housing and integrally formed as a process cartridge 13, and are configured to be detachable from the image forming apparatus C. .

The process cartridge 13 is mounted on an image forming apparatus C as shown in FIG. 2 and used for image formation. In image formation, a sheet 2 is fed out as a recording medium from a sheet cassette 1 mounted on the lower portion of the apparatus by a paper feed roller 3, the sheet 2 is transported by a transport roller 7a, and the sheet 2 is made to stand by by a registration roller 7b. In synchronization with the conveyance, the exposure device 30
To form a latent image by selective exposure. Thereafter, a developer container (hereinafter, referred to as a toner container or a toner frame)
The toner contained in 50 is carried on the surface of the developing roller 20s in a thin layer by the developing blade 20b, and a developing bias is applied to the developing roller 20s to supply toner to the photosensitive drum 15 in accordance with a latent image to form a toner image. I do. The sheet 2 is fed from the registration roller 7b to the opposing portion of the transfer roller 10 and the photosensitive drum 15 in synchronization with the formation of the toner image on the photosensitive drum 15. The toner image is transferred to the sheet 2 conveyed by applying a bias voltage to the transfer roller 10, and the sheet 2 is fixed to the fixing device 25.
The sheet is conveyed to the image fixing unit, and is discharged to the discharge unit 24 in the upper part of the apparatus by the discharge rollers 34 and 35.

The process cartridge 13 is attached to and detached from the apparatus main body 18 through an opening (not shown) of the apparatus main body 18 on the near side parallel to the plane of FIG. You.

[Frame Configuration of Process Cartridge] FIGS. 3 and 4 are perspective views showing the frame configuration. FIG. 3 is a diagram before the frame is assembled, and FIG. 4 is a diagram after the frame is assembled. The process cartridge 13 includes the photosensitive drum 1
5, a cleaning frame 14 integrally supporting a charging roller 17, a cleaning blade 16, and a developing roller 2.
0s, a developing frame 19 that integrally supports the developing blade 20b (not shown in FIG. 3), and a toner frame 50 that stores toner.

Further, in order to integrally support the three frames, the three frames are fixed by side covers 37 and 38, which are other frames, on both side surfaces of the frame, thereby forming a process cartridge. Thus, the frame of the process cartridge (collectively referred to as a cartridge frame) is composed of a plurality of frames.

The developing roller 20s is rotatably supported by the developing frame 19. The cleaning frame 14 fixes the cleaning blade 16 with small screws or the like, and the charging roller 17 rotatably supports the end of the cored bar 17a via a bearing member (not shown). The photosensitive drum 15 has flange portions 15a and 15b at both ends thereof, respectively.
It is rotatably supported via 9a and 39b. The toner frame 50 has toner transport members 50e and 50f therein.
At the same time, a toner as a developer is stored. Details of the developing frame 19 will be described later. The one side cover 37 is large enough to cover the main cross section of the process cartridge 13, is disposed at one end in the longitudinal direction of the process cartridge, and includes the cleaning frame 14 and the toner frame 5.
0 is integrally supported from both sides. The hole 37a of the side cover 37 is positioned coaxially with the center of the photosensitive drum 15 of the cleaning frame 14. The photosensitive drum 15 is supported by bearings 39a and 39b. At this time, the positioning of the side cover 37 via the bearing member 39a is determined with high accuracy. Further, a positioning portion 37 which is a dowel provided at a position as far as possible from the photosensitive drum 15
b fits into a positioning portion 14b, which is a hole provided on the side surface of the cleaning frame 14, to determine the position in the rotational direction. After the positioning, a longitudinal jig between the side covers and the container is fixed. Then, a molten resin is injected into a gap 154 (see FIG. 5) formed between the side cover and the frame, and is fixed.

Further, on one end surface of the toner frame 50, dowel-shaped positioning portions 50a and 50b projecting in the longitudinal direction (axial direction of the photosensitive drum 15) are provided, and the positioning portions are disposed on the side cover 37. The position is determined by the positioning portions 37c and 37d, which are the holes, and then fixed with the molten resin described later. The other side cover 38 is similarly positioned on the cleaning frame 14 and the developer frame 50. Further, the bearing members 39a and 39b also serve for positioning with respect to the image forming apparatus main body 18. Bearing members 39a, 39
b is a hole 14 at the longitudinal end of the cleaning frame 14.
a and 14f, and in the assembled state, as shown in FIG. 4, protrudes outward through holes 37a of the side covers 37, 38 (the 38 side is not visible). The protruding bearing members 39a and 39b fit into positioning portions provided on the apparatus main body 18. In order to supply the toner from the toner frame 50 to the developing roller 20s, the toner receiving opening 1 is provided in each of the toner frame 50 and the developing frame 19.
9a, a toner supply opening 50c is provided.

As shown in FIG. 1, the developing frame 19 and the toner frame 50 are connected by a seal member 44 that connects the openings. The seal member 44 has both ends fixed to the toner receiving opening 19a and the toner supply opening 50c, respectively, and the fixed portions are sealed. The cylindrical seal member 44 is connected to the toner supply opening 50c through the toner receiving opening 19a. Is prevented from leaking to the outside. The hollow plate 21 is attached to one end of the seal member 44, and the plate 21 is attached to the developing frame 19 or the toner frame 50, thereby facilitating the construction of the seal member 44. Also, the toner frame 5
0 is positioned by the side covers 37 and 38, and the developing frame 19 is positioned by the cleaning frame 14, so that the developing frame 19 and the toner frame 50 may be distorted due to dimensional errors. is there. Therefore, the seal member 44 uses a flexible material (flexible member).

[Structure of Developing Frame] As shown in FIG. 1, the developing frame 19 has developing means 20. The developing means 20 includes a developing roller 20s and a magnet roller (not shown).
Including. A developing blade 20b and a magnetic seal (not shown) are provided. The magnet roller is the developing frame 1
9 to maintain a gap with the developing roller 20s. The power supply to the developing roller 20s is performed by providing an electric contact inside the developing roller 20s. Further, on the developing roller 20s, a contact roller (not shown) for keeping a constant distance from the photosensitive drum 15 is provided.

The developing frame 19 is swingably supported by a suspension hole 19d provided on the driving side of the developing roller 20s as a center of rotation of the photosensitive drum 15 so that the center of the developing roller 20s is oriented. ing. That is, the developing roller 20s
Is provided on the driving side of one end in the longitudinal direction on the cleaning frame 14, the arm 19c is arranged on the arm 19c so as to be swingable around the hanging hole 19d, and As described above, since the toner frame 50 and the cleaning frame 14 are fixed without moving relatively, the developing frame 19 is relatively movable with respect to the toner frame 50.

Further, as shown in FIG. 9, on the non-driving side of the developing frame 19 (the side opposite to the arm 19c in the longitudinal direction), there is provided a projection 20c on the longitudinal central axis of the developing roller 20s.
The projection 20c is moved toward the center of the photosensitive drum 15 by a spring 22.
It is configured to pressurize.

The projection 20c is inserted into a groove 37g (in this embodiment, a linear hole substantially parallel to the center direction of the photosensitive drum 15) provided in the side cover 37, and It is configured to be movable in the center direction.
Further, a spring 21 is disposed inside the groove 37g so as to press the protrusion 20c via a bridge 23. Piece 23
Is fitted in the groove 37g so as to be movable along the groove 37g.

The groove 37g is formed simultaneously with the developing roller 20s.
It also plays the role of positioning that regulates the direction of movement of the camera. Here, when a driving force is applied, the gears provided on the photosensitive drum 15 and the developing roller 20s exert a force in the direction of biting each other around the hanging hole 19d, and the force acts in a direction in which the photosensitive drum 15 and the developing roller 20s are separated. Is designed not to work. Also, the developing roller 20s is always pressed against the photosensitive drum 15 by the spring 21 described above.

Since the developing frame 19 and the developer storage container 50 are relatively movable, they are connected by a flexible seal member 44 for absorbing the moving range of both, so that toner leakage is prevented. .

[Toner Frame] As shown in FIG. 1, the toner frame 50 is provided with toner conveying members 50e and 50f. The toner supply opening 50c is sealed with a toner seal (not shown), and the toner is filled in the toner frame 50.

The toner seal is sealed between the plate 21 and the toner frame 50 to which the plate 21 is fixed. However, the end is exposed to the outside and is pulled out when the process cartridge 13 is started to be used, so that the toner supply opening 50c is opened.

[Cleaning Frame] Cleaning Frame 1
A cleaning blade 16 is attached to 4. Therefore, the cleaning blade 16 is
The transfer residual toner scraped from 5 is sent to the removed toner reservoir 14d by the feed member 14e.

[Combined Structure of Cleaning Frame and Toner Frame] In order to accurately combine the above-described structures, FIG.
The fixing jig 80 shown in FIG.

1. In a configuration in which the side surfaces of the cleaning frame 14 and the toner frame 50 are sandwiched between the side covers 37 and 38 (see FIGS. 8 and 9), the positioning of the side covers 37 and 38 and the frames 14 and 50 is performed with high accuracy. The protruding portions 71a, 71c, 72a, 73a, 73c, 74a of the slides 71 to 74 of the fixing jig 80 for joining are respectively provided.
To the concave portions 71b, 71d, 72 of each container, frame, and cover.
b, 73b, 73d, 74b, and the molten resin injection portions 154, 155, 156, 15 formed between the side covers 37, 38 and the frame bodies 14, 50.
The length can be determined with high precision by a method in which the molten resin is flown into 7 and integrated.

2. In a configuration in which the side surfaces of the cleaning frame 14 and the toner frame 50 are sandwiched between the side covers 37 and 38 (see FIGS. 8 and 9), the two side covers 37 and 38 are arranged in two directions (x, y) perpendicular to the longitudinal direction. Base plates 62, 7 of the fixing jig 80 for positioning the jigs with high precision.
0 are inserted into the recesses 37e, 37f, 38e, 38f of the side covers 37, 38 (the recesses 37f, 38f are the recesses 37e, 37f, 3f).
The molten resin injection part 15 formed between the side covers 37 and 38 and the frame bodies 14 and 50 is a long hole (see FIG. 7) in the direction connecting 8e and 38f.
4, 155, 156, and 157, the both sides of the process cartridge
The torsion between 7 and 38 is determined by the processing accuracy of the joined base plates 70 and 62. In addition, the processing accuracy of the joining base plates 62 and 70 and the fitting of the joining jig 69 between the joining base plates 62 and 70 in the two directions (x, y) on the surfaces orthogonal to the longitudinal direction and the longitudinal direction of the joining base plates 70 and 62. (90a, 90b, 90
c, 90d section).

[Synthetic Resin Material Used] The injection material for bonding is, for example, a high-impact polystyrene (HIPS) of a non-flame-retardant grade. The frame 19 and the side covers 37 and 38 are as shown in “HIPS + PPE” in Table 1.
(Polyphenylene ether-based resin) + phosphorus-based flame-retardant material.

[0045]

[Table 1]

Specifically, polystyrene resins 95 to
50 parts by mass and 5 to 50 polyphenylene ether resin
It has 5 to 15 parts by mass of a non-halogen phosphate condensate flame retardant based on 100 parts by mass of the composition in which the parts by mass are combined. If the content of the flame retardant falls below the lower limit, the flame retardancy UL-V2 cannot be satisfied, and if it exceeds the upper limit, the heat distortion temperature of the material decreases. A more preferred amount of the flame retardant is 5 to 10 parts by mass. Composition 100
The more preferred amount of the polyphenylene ether-based resin in the parts by mass is 10 to 20 parts by mass, and the significance of the combined use with the polystyrene-based resin will be described later in detail.

Examples of the polyphenylene ether-based resin include a copolymer having a phenylene ether structure as a major unit, and a copolymer of a monomer forming a homopolymer with another phenol.

The flame retardants of the non-halogen phosphate condensates include bisphenol A bis (diphenyl) phosphate and resorcinol bis (di2,2) shown in Table 2.
6 xylenyl) phosphate or a combination of both. Specifically, as bisphenol A bis (diphenyl) phosphate, "Product name: CR-741" of Daihachi Chemical Industry Co., Ltd., and "Product name: B" of Akzo Nobel Co., Ltd.
DP ". Examples of resorcinol bis (di2,6 xylenyl) phosphate include" Product name: PX-200 "of Daihachi Chemical Industry Co., Ltd.

[0049]

[Table 2]

FIG. 10 shows the effects of changing the ratio of PS and PPE on various characteristics. As shown in FIG. 10, if the amount ratio of the polystyrene-based resin and the polyphenylene ether-based resin is within the above specified range, it satisfies the UL-V2 standard. By increasing the resin temperature during molding (for example, by 5 to 30 ° C.), it has the same moldability; ・ It has the same molding shrinkage as conventional materials; ・ Uses polyphenylene ether with high mechanical strength As a result, it can be seen that the material has mechanical strength equal to or higher than that of the conventional material.

Further, as shown in Table 2, by using polyphenylene ether having high “char forming ability”, which is one of the flame retarding mechanisms, together with a polystyrene resin,
It is possible to use a phosphorus-based flame retardant, whose flame retardant effect is inferior to that of a brominated flame retardant, and furthermore, by selecting a condensate with high thermal stability and hydrolysis resistance among phosphorus-based flame retardants. It is possible to suppress the generation of gas at the time of manufacturing (at the time of molding), and it is necessary to remove the gas adhering part of the flame retardant as post-processing after molding, as when using a non-halogen phosphate monomer. There is no.

Thus, an impact-resistant polystyrene material having no possibility of generating dioxin during combustion can be obtained. Further, by using this material for the frame of a cartridge that is detachable from the main body of the electrophotographic image forming apparatus, it is possible to reduce the environmental load without impairing the quality and productivity of the product.

Here, an example of the manufacturing process of the frame is shown.

As described above, the fluidity is lower than that of the conventional HIPS material using a halogen-based flame retardant.
Forming (manufacture of containers). Molding is performed under the same molding conditions as those for HIPS using a halogen-based flame retardant. At that time, the peak pressure (gauge pressure) value at the time of filling is read. The temperature of the cylinder of the molding machine and the set temperature of the hot runner are raised by 10 ° C., and the molding is performed after changing to the material described in this patent (HIPS using a phosphorus-based flame retardant). At this time, the peak pressure value at the time of filling has a pressure difference of 490 kPa (5 kgf / c) from HIPS using a halogen-based flame retardant.
Adjust by raising or lowering the temperature within m ² ).

[0055]

As described above, according to the present invention, there is provided a cartridge detachably mountable to the main body of an electrophotographic image forming apparatus capable of achieving a reduction in environmental load without impairing product quality and productivity. A frame material can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic main cross-sectional view of a process cartridge according to an embodiment of the present invention.

FIG. 2 is a schematic main cross-sectional view of an electrophotographic image forming apparatus main body according to an embodiment of the present invention.

FIG. 3 is an exploded perspective view schematically showing a frame structure of a process cartridge according to the embodiment of the present invention.

FIG. 4 is a perspective view schematically showing a frame structure of a process cartridge according to the embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of the joining portion of the process cartridge according to the embodiment of the present invention, which is cut in the inner and outer directions.

FIG. 6 is a cross-sectional view illustrating a schematic configuration of a process cartridge and a fixing jig for joining the process cartridge according to the embodiment of the present invention.

7 is a schematic view of the process cartridge and the fixing jig for joining the process cartridge of FIG. 6 according to the embodiment of the present invention, as viewed from the Z direction.

FIG. 8 is a perspective view of a process cartridge.

FIG. 9 is a perspective view of the process cartridge as viewed from the front in the mounting direction.

FIG. 10 is a graph showing the effect of the ratio of PS and PPE on the characteristics.

[Explanation of symbols]

A ... frame body B ... frame body C ... image forming apparatus Z ... view in the direction of arrow in FIG. 6 X1, X2, X3, X4 ... gap g1, g2, g3, g4 ... gap h1 ... gap 1 ... sheet cassette 2 ... sheet 3 ... Supply roller 7 ... Transport roller 7a ... Transport roller 7b ... Registration roller 10 ... Transfer roller 13 ... Process cartridge 14 ... Cleaning frame 14a ... Hole 14b ... Positioning part 14c ... End face 14d ... Removed toner reservoir 14e ... Removed toner feed member 14f: Hole 15: Photoconductor drum 15a, 15b: Flange 16: Cleaning blade 17: Charging roller 17a: Core bar 18: Device body 19: Developing frame 19a: Receiving opening 19c: Arm 19d: Hanging hole 20: Developing means 20s Developing roller 20b Developing blade 20c Projecting portion 21 Plate 22 Roots 23 ... piece 24 ... discharge unit 25 ... fixing device 30 ... exposure device 34 ... discharge roller 35 ... discharge rollers 37 ... side covers 37a ... hole 37b, 37
c, 37d: positioning portion 37e: positioning recess 37f: rotation preventing recess 37g
... groove 38 ... side cover 38a ... hole 38b, 38
c, 38d: Positioning portion 38e: Positioning concave portion 38f: Detent concave portion 39a, 39b: Bearing member 40: Edge 44: Seal member 50: Toner frame body 50a, 50b: Positioning portion 5
0c: toner supply opening 50d: end surface 50e, 50f: toner conveying member 60a, 60b: molten resin injection device (injection device) 61: runaway way 62, 70: joining base plate 63: gate 65: resin injection flow path of side cover 67a .., 67b, 68a, 68b... Protrusions 69 inserted into the side covers of the fixing jig for joining 69... Intermediate bases 71, 72, 73, 74 for joining to be fixed to a not-shown joining machine 71. , 71c, 72a, 73a, 73c, 74a ...
Convex portions 71b, 71d, 72b, 73b, 73d, 73d 'to be inserted into each container of the joint type slide portion,
74b: a concave portion into which the convex portion of the joint-type slide portion of each container is inserted 73b-1, 73d-1: inner surface 80: fixing jig 80a: fixing jig body 90a, 90b, 90c, 90d: joint base plate Fitting parts 152a, 152b ... flanges 154, 155, 156, 157 ... molten resin injection part 154b ... ribs 160b ... ribs 161a ... backup ribs

Continued on the front page F-term (reference) 2H071 BA01 BA05 BA13 DA08 DA13 DA15 2H077 AA02 AA35 BA08 BA09 FA16 2H134 GA01 GB02 HD00 HD19 HD20 KD04 KE07 KE09 KF04 KF08 KH04 KH08

Claims (2)

[Claims] 1. A cartridge detachable from an electrophotographic image forming apparatus main body, the cartridge comprising: (A) a cleaning unit rotatably supporting an electrophotographic photosensitive drum; and (B) a cleaning unit for the electrophotographic photosensitive member. (C) at least one of a developer storage unit that stores a developer used for development by the developing roller, and a developing unit that supports a developing roller that develops the formed latent image; A part of the parts of the unit is a resin composition 1 containing 95 to 50 parts by mass of a polystyrene resin and 5 to 50 parts by mass of a polyphenylene ether resin.
Non-halogen phosphate condensate 5
And the non-halogen phosphate ester condensate contains at least bisphenol A bis (diphenyl) phosphate or resorcinol bis (di2,6 xylenyl) phosphate. A cartridge for an electrophotographic image forming apparatus. 2. A cartridge detachably mountable to an electrophotographic image forming apparatus main body, the cartridge comprising (A) a cleaning frame for rotatably supporting an electrophotographic photosensitive drum, and (B) the electrophotographic photosensitive member. (C) at least one of a developer accommodating frame for accommodating a developer used for development by the developing roller, and a developing frame for supporting a developing roller for developing the latent image formed on the developing roller. At least one of the frames is made of a polystyrene resin 95 to
A resin composition containing 50 parts by mass and 5 to 50 parts by mass of a polyphenylene ether-based resin, and 100 parts by mass of a resin composition containing 5 to 15 parts by mass of a non-halogen phosphate condensate, When the halogen phosphate condensate is bisphenol A
A cartridge for an electrophotographic image forming apparatus, comprising at least bis (diphenyl) phosphate or resorcinol bis (di2,6xylenyl) phosphate.