JP2002091268A - Process cartridge and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To integrate a photoreceptor drum and a light emitting element array, thereby improving accuracy in the positional relationship between them and to enable repeated use of a rod lens array irrespective of replacement of the light emitting element array. SOLUTION: The light emitting element array 3 is positioned and mounted relative to the photoreceptor drum 2 freely rotatbaly supported by a cartridge main body. Light emitted from the light emitting element array 3 is condensed by the rod lens array 8 attached to the image forming device main body 9, and thus an image is formed on the photoreceptor drum 2. Therefore, even when a process cartridge 1 is attached/detached to/from the image forming device main body 9, the positional relationship of the array 3 with the drum 2 is not changed. Accordingly, by accurately positioning them, high quality image can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a printer, a facsimile, a copying machine, etc., and more particularly, to a process cartridge having at least an electrophotographic photosensitive member and a light-emitting means integrally provided, and this cartridge. The present invention relates to an image forming apparatus.

[0002]

2. Description of the Related Art Some conventional image forming apparatuses form a recorded image by an electrophotographic method. In this image forming apparatus, a light emitting means (light emitting element array) in which light emitting elements such as light emitting diodes are arrayed is used as a light source of the exposure means. An exposure apparatus using this light emitting element array is a drum-type electrophotographic photosensitive member (hereinafter, referred to as a “photosensitive drum”) as an image carrier that uses a latent image corresponding to an image signal output from an external computer or an image reading system. ), And a small, quiet image forming apparatus attached to the image forming apparatus main body can be easily configured.

An exposure apparatus emits diffused light from a light emitting element to form a latent image on a photosensitive drum provided in a process cartridge. In order to form a high-definition latent image on the photosensitive drum, In addition, it is necessary to condense the diffused light radiated from the light emitting elements into minute spots.

Therefore, an exposure apparatus using many light emitting element arrays is provided with a rod lens array as an image forming means, and the light emitting elements and the rod lenses are arranged in correspondence with each other.
A good spot is formed. Therefore, the relative positional relationship between the light emitting element and the rod lens is configured to have high positional accuracy.

As described above, the image forming apparatus is required to be able to form a higher definition image.

As described above, when a high-definition latent image is formed on the photosensitive drum, the exposure device is configured to achieve the required amount of light by superimposing the images by the individual rod lenses. In order to achieve high-precision superposition, high positional accuracy is required between the light-emitting element array, rod lens array, and photoconductor drum, and high precision is required for advanced adjustment mechanisms and the production of each component. Is done.

By the way, in the image forming apparatus, a process cartridge in which a photosensitive drum and a developing means are integrated is mounted on the image forming apparatus main body, and these can be easily replaced due to deterioration of the photosensitive drum and consumption of the developer. There is something that I did.

[0008]

However, since the process cartridge is detachably attached to the image forming apparatus main body, the process cartridge is located between the photosensitive drum and the exposure device provided in the image forming apparatus main body. It was difficult to adjust the position with high precision.

Further, the light quantity of the light emitting element in the light emitting means decreases as the drive time elapses as shown in FIG. 11 (line a shown in FIG. 11). However, in order to obtain a high quality image, It is necessary to always keep the light quantity of the light emitting means constant (line b shown in FIG. 11).

Therefore, a light amount sensor is provided for each light emitting element to control the light emission amount. That is, the light amount is measured by a light amount sensor corresponding to each light emitting element, and based on the measured light amount, the applied current of the light emitting element is increased as shown by a line c in FIG. Control is performed so as to obtain a desired amount of light by changing the disturbance time during which the light emitting element emits light.

However, there is a limit in controlling the amount of light by increasing the applied current. If the current is continuously increased, the light emitting element array is heated, and the characteristics of the photosensitive drum are deteriorated. High print quality cannot be maintained.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned points, and an electrophotographic photosensitive member and a light emitting means are integrated to improve the mutual positional relationship. It is an object of the present invention to provide a process cartridge and an image forming apparatus which can be used repeatedly.

[0013]

According to a first aspect of the present invention, there is provided a process cartridge having an electrophotographic photosensitive member rotatably supported by a cartridge body. A light-emitting unit having a plurality of light-emitting elements arranged in order to form a latent image by irradiating the electrophotographic photosensitive member with light to the cartridge body; Is mounted so as to face image forming means for condensing light emitted from the light emitting means and forming an image on the electrophotographic photosensitive member.

According to the second aspect of the present invention, the image forming means is mounted on an apparatus main body for attaching and detaching the cartridge main body, and the light emitting means is mounted in parallel along an axis of the electrophotographic photosensitive member. ing.

According to a third aspect of the present invention, the cartridge body is provided with the light emitting means and a developing means for developing a latent image formed on the electrophotographic photosensitive member by light emitted from the light emitting means. .

According to a fourth aspect of the present invention, there is provided the cartridge body, wherein the light emitting means, a developing means for developing a latent image formed on the electrophotographic photosensitive member by light emitted from the light emitting means, and the electronic device. And a charging means for uniformly charging the photographic photoreceptor.

According to a fifth aspect of the present invention, there is provided the cartridge body, wherein the light emitting means, developing means for developing a latent image formed on the electrophotographic photosensitive member by light emitted from the light emitting means, and the electronic device. A charging unit for uniformly charging the photographic photoconductor and a cleaning unit for removing the developer remaining on the electrophotographic photoconductor were mounted.

According to a sixth aspect of the present invention, there is provided a light quantity measuring means for measuring a quantity of light emitted from the plurality of light emitting elements.

According to a seventh aspect of the present invention, in the image forming apparatus, the light emitting amount of the light emitting element is controlled based on a measurement result measured by the process cartridge according to the sixth aspect and the light amount measuring means of the process cartridge. And a light amount control unit for controlling the amount of light.

[Operation] Based on the above structure, the light emitting means is mounted on the electrophotographic photosensitive member rotatably supported by the cartridge body, and the light emitted from the light emitting means is transmitted to the apparatus body. The light is condensed by the attached image forming means and forms an image on the electrophotographic photosensitive member. Accordingly, even when the cartridge main body is attached to and detached from the apparatus main body, the positional relationship of the light emitting means with respect to the electrophotographic photosensitive member does not change, and when forming an image by positioning these with high precision, a high quality image is obtained. Is obtained.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

<First Embodiment> FIG. 1 shows a first embodiment of the present invention.
FIG. 2 is a perspective view showing a state in which the process cartridge according to the embodiment is attached to the image forming apparatus main body, FIG. 2 is a perspective view showing a state in which the process cartridge is removed from the image forming apparatus main body, and FIG. FIG. 4 is a cross-sectional view illustrating the light emitting element array according to the first embodiment, FIG. 5 is a schematic configuration diagram illustrating an image forming apparatus equipped with the process cartridge according to the first embodiment, and FIG. FIG. 7 is a diagram showing a relationship between a change in light amount over time and an applied current according to the embodiment, and FIG. 7 is a schematic configuration diagram showing an example of a multicolor image forming apparatus equipped with a process cartridge.

1, 2 and 5, reference numeral 1 denotes a process cartridge. This process cartridge 1 includes a photosensitive drum 2, a light emitting element array 3 which is a light emitting means as a light source of an exposure means, and a cleaning blade which is a cleaning means. 27 and developing roller 2 as developing means
2 is installed. The light emitting element array 3 is an array of light emitting elements such as light emitting diodes, and is mounted on a cleaner unit 4 that rotatably supports the photosensitive drum 2.

At both ends of the cleaner unit 4 in the longitudinal direction,
Bearing portions 4a and 4b for supporting the photoconductor drum 2 are integrally provided. The cleaner unit 4 includes a bearing 4.
Holding members 5 and 6 for rotatably supporting the photosensitive drum 2 further in the longitudinal direction than a and 4b and holding the light emitting element array 3 are formed by, for example, die casting of a zinc alloy. You. That is, the holding members 5 and 6 support the photosensitive drum 2 on the bases 5a and 6a in a rotatable manner.
(Not shown), and an EL (Electroluminescent) for horizontally extending the light emitting element array 3.
The attachment parts 5c and 6c are formed integrally. Then, the light emitting element array 3 is inserted by inserting the support shaft 5b (the holding member 6 side, not shown) into the shaft core (not shown) of the photosensitive drum 2 through the bearings 4a, 4b. Are substantially parallel to the axis of the photosensitive drum 2 and the EL mounting portion 5
c, 6c.

Further, flanges 2a and 2b are integrally attached to both ends in the longitudinal direction of the photosensitive drum 2, and a gear portion (not shown) is provided on the flanges 2a and 2b. When the process cartridge 1 is mounted on the main body 9 of the image forming apparatus, the rotation of a motor (not shown) as a driving unit of the main body 9 of the image forming apparatus is transmitted to the photosensitive drum 2 via a gear portion. become. A connector (not shown) for electrically connecting the flexible substrate 7 is attached to the holding member 6. The cartridge body is constituted by the cleaner unit 4 and the holding members 5 and 6.

Incidentally, the rod lens array 8 as the image forming means constituting the exposure means is mounted on the image forming apparatus main body 9, and when the process cartridge 1 is mounted on the image forming apparatus main body 9, the rod lens array 8 is provided. The array 8 is disposed between the light emitting element array 3 and the photosensitive drum 2 so that the light from the light emitting element array 3 passes through the rod lens array 8 and irradiates the photosensitive drum 2. Therefore, when the process cartridge 1 is detached from the image forming apparatus main body 9, the rod lens array 8 does not exist between the light emitting element array 3 and the photosensitive drum 2.

Next, the structure of each light emitting element of the light emitting element array 3 will be described with reference to FIGS.

The light emitting element array 3 is a whole including layers necessary for light emission as shown in FIG. 4. The light emitting element array 3 is composed of an ITO film or the like on a substrate 10 made of glass or the like transparent to the light emission wavelength. A positive electrode 11 transparent to the emission wavelength is formed separately for each light emitting element. A part of the positive electrode 11 is provided with an organic hole transport layer 12, an organic electron transport layer 13, a negative electrode 14 of Mg, Al or the like, and a sealing layer 15 for blocking contact with air as required. Be composed.

The light-emitting portion of the light-emitting element is a portion where the plus electrode 11 and the minus electrode 14 intersect. By applying an optimum voltage during this time, a good amount of light is emitted toward the plus electrode 11 on the substrate 10. Is obtained. Note that the direction of light emission can be in a direction substantially parallel to the layer direction and in other directions.

As shown in FIG. 3, the light emitting element array 3 has light emitting elements 31a to 31n provided in an array on a substrate 10, and a plurality of light emitting elements 31a to 31n are provided on the substrate 10.
A control circuit 32 as light quantity control means for causing 1n to emit light in accordance with image information, and light emitting elements 31a to 31n
Light quantity measuring sensors 33a to 33 that measure light quantity corresponding to
n is provided. These light quantity measuring sensors 33a to 33
The control circuit 32 controls the light emission amounts of the light emitting elements 31a to 31n based on the measurement result measured by n.

Incidentally, the light quantity of the light emitting elements 31a to 31n decreases as the drive time elapses as shown in FIG. 6 (line a shown in FIG. 6). For this reason, in order to obtain a high-quality image, the applied current is increased and the light emitting elements 31 a to 31
It is necessary to keep the amount of light emission of n constant (line b shown in FIG. 6). However, if the applied current is continuously increased as shown by the line c in FIG. 6, the light emitting elements 31a to 31n heat up,
The amount of light decreases from the point A shown in FIG. 6, and by increasing the current value beyond the applied current corresponding to this point, the characteristics of the photosensitive drum 2 are deteriorated and the toner is solidified. Can no longer be retained.

In order to prevent this, in the present embodiment, when the light amount decreases beyond the point A shown in FIG. 6, the light amount measuring sensors 33a to 33n detect the life of the light emitting element array 3 and the control circuit 32 Control is performed to increase the current applied to the light emitting elements 31a to 31n at a stretch. As a result, the light emitting elements 31a to 31n are destroyed, and the light emitting elements 31a to 31n are broken.
The characteristic deterioration of the photosensitive drum 2 and the solidification of the toner due to the heating of n are prevented.

Incidentally, as described above, the characteristics of the light emitting element array 3 and the photosensitive drum 2 are deteriorated by long-term use, and the life thereof is extended. On the other hand, the rod lens array 8 can be used for a longer time than the photosensitive drum 2 and the light emitting element array 3. Therefore, when the light emitting element array 3 or the photosensitive drum 2 has reached the end of its life, the rod lens array 8 can be used repeatedly only by replacing the process cartridge 1.

In the above-described embodiment, the description has been given of the case where the applied current control is performed as a control for obtaining a constant light amount. However, the same light amount control can be performed by controlling the applied voltage or the pulse width of the driving pulse. It can be carried out.

Next, an image forming apparatus equipped with the process cartridge of the present embodiment will be described with reference to FIG.

Image data is sent from a host device (not shown) to a controller inside the printer 20 as an image forming apparatus main body. The transfer paper P is fed via a feed roller 17 of a paper feed cassette or a feed roller 18 of a manual feed section. When the transfer paper P reaches the position of the registration rollers 16a and 16b, the transfer paper P is supplied by a sensor (not shown). The leading end position of the transfer sheet P is detected, and is fed by the registration rollers 16a and 16b at a certain timing.

On the other hand, the photosensitive drum 2 charged in advance by the charging roller 19 serving as a charging means is exposed to image data information from the light emitting element array 3 by a light emitting element array driver (not shown) provided on the printer 20 side. Rotate in the direction of arrow R2 to form an electrostatic latent image. Then, the developer contained in the developing unit 21 is adhered to the photosensitive drum 2 by a developing roller 22 as a developing unit, and a toner image corresponding to the electrostatic latent image formed on the photosensitive drum 2 is formed.

Thereafter, the photosensitive drum 2 is rotated, and the registration rollers 16a and 16b are rotated at the timing when the toner image reaches the transfer position (nip position) of the transfer device 23 as the transfer means, and the transfer paper P is transferred. It is transported to the nip position of the transfer device 23. Then, the transfer device 23 transfers the toner image formed on the photosensitive drum to the transfer paper P.

Next, the transfer paper P passes through the transport path 24,
Fixing the toner images in the fixing devices 25a and 25b,
The image is discharged to the tray 26 and the image forming process is completed.

As described above, in the present embodiment, the photosensitive drum 2 is rotatably supported, and the light emitting element array 3 is held so as to be mounted in a direction perpendicular to the axis of the photosensitive drum 2. Clean the parts 5 and 6 with the cleaner unit 4
The light emitting element array 3 can be positioned with respect to the photosensitive drum 2 with high precision because the light emitting element array 3 is fixed to both side surfaces of the light emitting element array 3. Can be applied to the photosensitive drum 2 in the same state as before.

Since the rod lens array 8 is attached to the image forming apparatus main body 9 so that the rod lens array 8 and the light emitting element array 3 are arranged on the same radius of the photosensitive drum 2, the light emitting element array 3 A good spot can be formed on the photosensitive drum 2 by the light flux from the photosensitive drum 2, and a high-definition electrostatic latent image can be formed on the photosensitive drum 2, so that a high-definition image can be formed even in image formation. .

In the present embodiment, the above-described light emitting element array driver has been described as being provided in the process cartridge, but may be provided in the image forming apparatus main body outside the process cartridge.

Next, a multicolor image forming apparatus equipped with the process cartridge constructed as described above will be described with reference to FIG.

FIG. 7 is a schematic diagram showing an example of a multicolor image forming apparatus equipped with the process cartridge according to the first embodiment.

In the figure, reference numeral TF1 denotes a transfer belt. This transfer belt TF1 is suspended between rollers TR1 and TR2, and has photosensitive drums 501, 502, 503 for black, cyan, magenta and yellow.
504 and transfer blades T1, T2, T opposed thereto
3, T4.

Further, a charging roller C1 as charging means, an exposing means E1, and a developing sleeve S1 of a developing means D1 are arranged around the photosensitive drum 501 in this order, thereby constituting an electrophotographic process. The transfer belt TF1 conveys a transfer paper P as a recording medium in a direction indicated by an arrow X by rotating rollers TR1 and TR2 in a direction indicated by an arrow R. Thereby, the transfer belt TF1 conveys the transfer paper P to the black transfer position of the transfer blade T1 facing the photosensitive drum 501.

By forming a desired black toner image on the photosensitive drum 501 by an electrophotographic process, a good black toner image is transferred onto the transfer paper P.

Next, the photosensitive drum 502 is arranged around the charging roller C2, the exposing means E2 and the developing means D2 in this order.
, And an electrophotographic process is constituted by these. Then, the transfer belt TF
The transfer sheet P is conveyed to the cyan transfer position by rotating 1 in the X direction shown in the figure.

By forming a desired cyan toner image on the photosensitive drum 502 by this electrophotographic process, a good cyan toner image is transferred onto the transfer paper P.

Next, the photosensitive drum 503 is arranged around the charging roller C3, the exposing means E3 and the developing means D3 in this order.
, And an electrophotographic process is constituted by these. Then, the transfer belt TF
The transfer paper P is conveyed to the magenta transfer position by rotating 1 in the X direction shown in the figure.

By forming a desired magenta toner image on the photosensitive drum 503 in this electrophotographic process, a good magenta toner image is transferred to the transfer paper P.

Next, the photosensitive drum 504 is sequentially surrounded by a charging roller C4, an exposing means E4 and a developing means D4.
, And an electrophotographic process is constituted by these. Then, the transfer belt TF
The transfer paper P is conveyed to the yellow transfer position by rotating 1 in the X direction shown in the figure.

By forming a desired yellow toner image on the photosensitive drum 504 by this electrophotographic process, a good yellow toner image is transferred onto the transfer paper P.

In this case, since the photosensitive drums 501, 502, 503, and 504 are satisfactorily rotating in each recording means, the respective photosensitive drums 501, 502, 503, and 503 are rotated.
Between 504, image registration can be performed well.

<Second Embodiment> Next, a second embodiment of the present invention will be described.
The embodiment will be described with reference to FIG.

FIG. 8 is a schematic view showing a process cartridge according to a second embodiment of the present invention. 8, the same or equivalent components as those in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted.

In the above-described embodiment, the photosensitive drum, the developing roller, the charging roller, and the cleaning blade are mounted on the process cartridge. However, the process cartridge 30 includes the photosensitive drum 2 and the organic EL element. If the light emitting element array 3 for image information exposure is provided, the mutual positional relationship between the photosensitive drum 2 and the light emitting element array 3 can be positioned with high accuracy.

Then, the photosensitive drum 2 and the light emitting element array 3 are mounted on a cartridge main body which is a case of the process cartridge 30, so that the photosensitive drum 2
Alternatively, the process cartridge 30 can be replaced as needed depending on the life of the light emitting element array 3 and the like, and the rod lens array 8 that can be used for a long time can be used as it is, which can contribute to resource saving.

In this case, the rod lens array 8 is mounted on the main body of the image forming apparatus, and when the process cartridge 30 is mounted on the main body of the image forming apparatus, the rod lens array 8 is interposed between the photosensitive drum 2 and the light emitting element array 3. In a state where 30 has been taken out of the image forming apparatus main body, it does not exist between the photosensitive drum 2 and the light emitting element array 3.

<Third Embodiment> Next, a third embodiment of the present invention will be described.
An embodiment will be described with reference to FIG.

FIG. 9 is a schematic view showing a process cartridge according to a third embodiment of the present invention. In FIG. 9, the same or equivalent components as those in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted.

The process cartridge 31 of the present embodiment
Is composed of a light-emitting element array 3 for image information exposure composed of a photosensitive drum 2 and an organic EL element, and a developing roller 32, and the photosensitive drum 2 and the light-emitting element array 3
Is detachably attached to a cartridge body which is a case of the process cartridge 31, so that the process cartridge 31 can be replaced as necessary depending on the life of the photosensitive drum 2 or the light emitting element array 3, and the rod lens array 8 Can be used as it is, which can contribute to resource saving.

In this case, also in the present embodiment, the rod lens array 8 is mounted on the main body of the image forming apparatus, and when the process cartridge 31 is mounted on the main body of the image forming apparatus, the rod lens array 8 is connected to the photosensitive drum 2 and the light emitting element array 3. When the process cartridge 31 is removed from the main body of the image forming apparatus, it does not exist between the photosensitive drum 2 and the light emitting element array 3.

<Fourth Embodiment> Next, a fourth embodiment of the present invention will be described.
The embodiment will be described with reference to FIG.

FIG. 10 is a schematic view showing a process cartridge according to a fourth embodiment of the present invention. FIG.
At 0, the same or equivalent components as those in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted.

The process cartridge 33 of the present embodiment
Is constituted by a light emitting element array 3 for image information exposure constituted by a photosensitive drum 2 and an organic EL element, a developing roller 34 and a charging roller 35, and the photosensitive drum 2 and the light emitting element array 3 The process cartridge 33 can be exchanged as necessary depending on the life of the photosensitive drum 2 or the light emitting element array 3 by being detachably mounted on the cartridge body serving as a case, and the rod lens array 8 can be used as it is. Can contribute to the resource saving of resources.

In this case, the rod lens array 8 is mounted on the main body of the image forming apparatus, and when the process cartridge 33 is mounted on the main body of the image forming apparatus, the rod lens array 8 is interposed between the photosensitive drum 2 and the light emitting element array 3. In the state where 33 is taken out of the image forming apparatus main body, it does not exist between the photosensitive drum 2 and the light emitting element array 3.

[0068]

As is apparent from the above description, the light emitting means is mounted on the electrophotographic photosensitive member rotatably supported by the cartridge body, and the light emitted from the light emitting means is emitted from the apparatus main body. Since the light was condensed by the image forming means attached to and formed on the electrophotographic photosensitive member,
Even when the cartridge main body is attached to and detached from the apparatus main body, the positional relationship of the light emitting means with respect to the electrophotographic photosensitive member does not change, and these can be positioned with high precision, and therefore, when forming an image, high quality can be obtained. Images can be obtained.

Further, since the image forming means is provided on the apparatus main body and the light emitting means is mounted on the cartridge main body, the image forming means is repeatedly used even if the light emitting means which has a shorter life than the image forming means is replaced. It can be used, is economical, and can save resources.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a process cartridge according to a first embodiment of the present invention is mounted on an image forming apparatus main body.

FIG. 2 is a perspective view showing a state where the process cartridge is removed from an image forming apparatus main body.

FIG. 3 is a control circuit diagram showing a light-emitting element array including the light amount sensor according to the first embodiment.

FIG. 4 is a cross-sectional view showing the light emitting element array according to the first embodiment.

FIG. 5 is a schematic configuration diagram illustrating an image forming apparatus in which the process cartridge is mounted.

FIG. 6 is a diagram showing a relationship between a change in light amount over time and an applied current according to the embodiment of the present invention.

FIG. 7 is a schematic configuration diagram illustrating an example of a multicolor image forming apparatus in which a process cartridge is mounted.

FIG. 8 is a schematic view illustrating a process cartridge according to a second embodiment of the present invention.

FIG. 9 is a schematic view showing a process cartridge according to a third embodiment of the present invention.

FIG. 10 is a schematic view showing a process cartridge according to a fourth embodiment of the present invention.

FIG. 11 is a diagram showing a conventional relationship between a change in light amount over time and an applied current.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Process cartridge 2 Electrophotographic photosensitive member (photosensitive drum) 3 Light emitting means (light emitting element array) 4 Cartridge main body (cleaner unit) 8 Image forming means (rod lens array) 9 Device main body (image forming apparatus main body) 19 Charging means ( (Charging roller) 22 Developing unit (Developing roller) 23 Transfer unit (Transfer unit) 27 Cleaning unit (Cleaning blade)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03G 15/04 111 G03G 15/04 120 15/043 15/04 21/00 510 (72) Inventor: Satoshi Mashita 2 Canon, Inc. 3-72, Shimomaruko 3-chome, Ota-ku, Tokyo (72) Inventor Yukio Nagase F-term (reference) 2C162 AE12 AE21 AE28 AE47 in Canon Inc. 3-30-2, Shimomaruko, Ota-ku, Tokyo AF84 FA04 FA17 FA45 FA62 FA70 2H027 DA07 DE02 EA02 EC06 EC15 HB16 HB18 2H071 BA04 BA13 BA16 DA03 DA06 DA08 DA13 DA15 2H076 AB42 AB51 AB60 DA04 DA17

Claims (7)

[Claims] 1. A process cartridge having an electrophotographic photosensitive member rotatably supported by a cartridge body, wherein the cartridge body is arranged and arranged to irradiate the electrophotographic photosensitive member with light to form a latent image. And a light emitting means having a plurality of light emitting elements is positioned with respect to the electrophotographic photosensitive member, and the light emitting means condenses light emitted from the light emitting means to form an image on the electrophotographic photosensitive member. A process cartridge characterized in that the process cartridge is mounted facing the means. 2. The image forming device according to claim 1, wherein the image forming unit is mounted on an apparatus main body for attaching and detaching the cartridge main body, and the light emitting unit is mounted in parallel along an axis of the electrophotographic photosensitive member. Item 4. The process cartridge according to Item 1. 3. The cartridge body is provided with the light emitting means, and a developing means for developing a latent image formed on the electrophotographic photoreceptor by light emitted from the light emitting means. Item 4. The process cartridge according to Item 1. 4. An electrophotographic photoreceptor, comprising: a light emitting unit; a developing unit for developing a latent image formed on the electrophotographic photoreceptor by light emitted from the light emitting unit; 2. The process cartridge according to claim 1, further comprising: charging means for charging. 5. A light-emitting device, a developing device for developing a latent image formed on the electrophotographic photosensitive member by light emitted from the light-emitting device, 2. The process cartridge according to claim 1, further comprising a charging unit for charging and a cleaning unit for removing a developer remaining on the electrophotographic photosensitive member. 6. The process cartridge according to claim 1, further comprising a light amount measuring unit for measuring an amount of light emitted from the plurality of light emitting elements. 7. The apparatus main body, comprising: the process cartridge according to claim 6; and a light amount control unit that controls a light emission amount of the light emitting element based on a measurement result measured by a light amount measurement unit included in the process cartridge. An image forming apparatus comprising: