JP2008139435A - Image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of surely detecting the opening/closing state of an opening/closing member with simple constitution. <P>SOLUTION: The image forming apparatus includes a photosensor 29 that detects the position of a snap fit 27 for locking a reverse cover 3 configured to be freely rotatably supported by a rear cover 26 (image forming apparatus body) related to the image forming apparatus in body, and detects that the snap fit 27 is locked by a locking part 28, thereby, detects that the reverse cover 3 is in a closed state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image forming apparatus such as a copying machine or a laser beam printer.

  FIG. 19 is a diagram illustrating a schematic configuration of an image forming apparatus 101 capable of duplex printing.

  Hereinafter, the double-sided printing process will be described with reference to FIG.

  The recording material P is loaded on the recording material loading table 104 and is pressed against the feeding roller 106 by a recording material loading table spring 105 provided below the recording material loading table 104. When the feeding roller 106 is driven by a driving unit (not shown) and rotated, the uppermost recording material P is fed. Even when a plurality of recording materials P are fed by the feeding roller 106, the recording material P is rolled by the separation pad 107 provided on the downstream side of the feeding roller 106, and the uppermost layer of the recording material P is surely placed. It is sent to the conveyance roller pair 108. Thereafter, the recording material P is conveyed to the process unit 110 through the registration roller pair 109.

  In the process unit 110, electrostatic latent image formation, development, and transfer are performed. An electrostatic latent image is formed on the photosensitive drum 112 by the laser beam Z emitted from the scanner unit 111. The electrostatic latent image is developed by a developing device (not shown) to form a toner image. The toner image is transferred to the recording material P by the transfer roller 113.

  The recording material P onto which the toner image has been transferred is conveyed to the fixing unit 114, and heat and pressure are applied by the fixing roller pair 115. As a result, the toner image is fixed on the recording material P.

  During single-sided printing, the recording material P passes through the fixing discharge roller pair 116 and the reverse roller pair 117 and is discharged to the discharge tray 118.

  During double-sided printing, the reverse end of the reversing roller 117 rotates in the direction of arrow B after the trailing edge of the recording material P has passed through the fixing discharge roller pair 116. As a result, the recording material P is conveyed in the direction of arrow C along the recording material conveyance path 119 at the leading edge (the trailing edge during single-sided printing). The reverse roller pair 117 returns to the normal rotation in the direction of arrow A after the rear end of the recording material P has passed. The recording material P is conveyed to the recording material conveyance path 121 by the double-side entrance roller pair 120.

  The skew feeding pinch roller 123 is a width-adjusting means inclined obliquely by a certain amount with respect to the recording material conveyance direction, and the recording material P is conveyed while being abutted against a recording material guide (not shown) by the skew feeding roller pair 122. Is done. Thereafter, the recording material P passes through the refeed roller pair 125 and the registration roller pair 109, and the toner image is transferred by the above-described process, passes through the fixing discharge roller pair 116 and the reverse roller pair 117, and is discharged to the discharge tray 118. Both sides printing is completed.

  Next, the recording material clogging process will be described.

  The reversing cover 103 provided with the recording material guide portion 102 is rotatably supported with respect to the image forming apparatus 101. At the time of normal printing, the reversing cover 103 is closed as shown in FIG. 19 so that the recording material guide portion 102 forms the recording material conveyance path 121. When a recording material jam occurs in the image forming apparatus 101, the reversing cover 103 is opened as shown in FIG. 20, and the user accesses the recording material conveyance path 121 to perform the recording material jam processing. .

  The image forming apparatus 101 is provided with a mechanism for detecting opening and closing of the reversing cover 103. The detection mechanism will be described below.

  FIGS. 14A and 14B are perspective views of the reversing cover 103 in a closed state and an open state, respectively.

  The reverse cover 103 is supported by the rear cover 126 so as to freely rotate. In the state where the reversing cover 103 in FIG. 14A is closed, the snap fit 127 provided on the reversing cover 103 is hooked on the hooking portion 128 of the rear cover 126. By rotating the reverse cover in the direction of arrow D from that state, the reverse cover 103 can be opened as shown in FIG.

  FIG. 15 is a perspective view of FIG. 14A viewed from the direction of arrow J. FIG. 16A is an enlarged view of a portion surrounded by a two-dot chain line in FIG.

  The rear cover 126 is provided with a photosensor 129 for detecting the open / closed state of the reversing cover 103. The photo sensor 129 includes a light projecting unit 130 and a light receiving unit 131. Then, the light receiving unit 131 detects whether or not the light 132 from the light projecting unit 130 is blocked by the detected object, thereby detecting the position of the detected object. The reversing cover 103 is provided with a rib 133 which is a detected body of the photosensor 129.

  FIGS. 16B and 17B are perspective views of the reversing cover 3 in a closed state and an open state, respectively. 16 (a) and 17 (a) are enlarged views of the open / close detection unit of the reversing cover 3 corresponding to the states of FIGS. 16 (b) and 17 (b), respectively.

In FIG. 16A, it is detected that the rib 133 blocks the light 132 of the photosensor 129 and the reversing cover 103 is closed. On the other hand, in FIG. 17A, it is detected that the rib 133 does not block the light 132 of the photosensor 129 and the reversing cover 103 is open. When a command for duplex printing is issued in a state where it is detected that the reversal cover 103 is open, the user is warned to that effect. Then, after the user closes the reverse cover 103 and detects it, the duplex printing is started.
JP 2005-29285 A

  FIG. 18B is a perspective view showing a state where the reversing cover 103 is slightly opened. FIG. 18A is an enlarged view of the open / close detection unit of the reversing cover 103 corresponding to the state of FIG.

  In FIG. 18, the snap fit 127 is not hooked on the hook 128 and the reversing cover 103 is not completely closed, but the rib 33 is in a state of blocking the light 32 of the photosensor 29. That is, even if the reverse cover 103 is not completely closed, it is detected that the reverse cover 103 is closed. When printing is performed in this state, the recording material guide portion 102 of the reversing cover 103 is not in a proper position, and there is a possibility that problems such as recording material clogging may occur.

  In the conventional configuration as described above, high dimensional accuracy is required for the reverse cover 103, the photosensor 129, and the rear cover 126 in order to reduce the probability of erroneous detection of the open / close state of the reverse cover, resulting in an increase in cost. .

  SUMMARY An advantage of some aspects of the invention is that it provides an image forming apparatus that can detect an open / close state of an open / close member more reliably with a simple configuration.

In order to achieve the above object, the present invention provides:
In an image forming apparatus comprising: an opening / closing member that can be opened and closed with respect to the apparatus main body; and a latching unit that latches the opening / closing member with respect to the apparatus main body.
It has a detection means which detects the said latching means, It is characterized by the above-mentioned.

An image forming apparatus comprising: an opening / closing member that can be opened and closed with respect to the apparatus main body; a latching unit that latches the opening / closing member with respect to the apparatus main body; and a switch that switches the apparatus main body to and from the power source. In the device
The hooking means can switch the switch.

  According to the present invention, it is possible to provide an image forming apparatus capable of more reliably detecting the open / closed state of the open / close member with a simple configuration.

  The best mode for carrying out the present invention will be exemplarily described in detail below with reference to the drawings. However, the dimensions, materials, shapes, and relative arrangements of the components described in this embodiment should be appropriately changed according to the configuration of the apparatus to which the invention is applied and various conditions. It is not intended to limit the scope to the following embodiments.

  Embodiment 1 of the present invention will be described below. FIG. 12 is a diagram illustrating a schematic configuration of the image forming apparatus 1 according to the present embodiment capable of duplex printing.

  Hereinafter, the double-sided printing process will be described with reference to FIG.

  The recording material P is stacked on the recording material stack 4 and is pressed against the feeding roller 6 by a recording material stack spring 5 provided below the recording material stack 4. When the feed roller 6 is driven by a drive unit (not shown) and rotated, the uppermost recording material P is fed. Even when a plurality of recording materials P are fed by the feeding roller 6, the recording material P is rolled by the separation pad 7 provided on the downstream side of the feeding roller 6, and the uppermost layer of the recording material P is surely placed. It is sent to the conveyance roller pair 8. Thereafter, the recording material P is conveyed to the process unit 10 through the registration roller pair 9.

  In the process unit 10, electrostatic latent image formation, development, and transfer are performed. An electrostatic latent image is formed on the photosensitive drum 12 as an electrophotographic photosensitive member (image carrier) by the laser light Z emitted from the scanner unit 11. The electrostatic latent image is developed by a developing device (not shown) to form a toner image. The toner image is transferred to the recording material P by the transfer roller 13.

  The recording material P to which the toner image has been transferred is conveyed to the fixing unit 14, and heat and pressure are applied by the fixing roller pair 15. As a result, the toner image is fixed on the recording material P.

  During single-sided printing, the recording material P passes through the fixing discharge roller pair 16 and the reverse roller pair 17 and is discharged to the discharge tray 18.

At the time of duplex printing, after the trailing edge of the recording material P passes through the fixing discharge roller pair 16, the reverse roller pair 17 rotates in the reverse direction in the arrow B direction. As a result, the recording material P is conveyed in the direction of arrow C along the recording material conveyance path 19 at the leading end (the trailing edge during single-sided printing). The reverse roller pair 17 returns to the normal rotation in the direction of arrow A after the rear end of the recording material P has passed. The recording material P is conveyed to the recording material conveyance path 21 by the double-side entrance roller pair 20.

  The oblique feed pinch roller 23 is a width-adjusting means inclined obliquely by a predetermined amount with respect to the recording material conveyance direction, and the recording material P is conveyed while being abutted against a recording material guide (not shown) by the oblique conveyance roller pair 22. Is done. Thereafter, the recording material P passes through the refeed roller pair 25 and the registration roller pair 9, and the toner image is transferred by the above-described process, passes through the fixing discharge roller pair 16 and the reverse roller pair 17, and is discharged to the discharge tray 18. Both sides printing is completed.

  Next, the recording material clogging process will be described.

  The reversing cover 3 as an opening / closing member provided with the recording material guide portion 2 is supported so as to be freely rotatable (openable / closable) with respect to the image forming apparatus 1 main body (apparatus main body). During normal printing, the reversing cover 3 is closed as shown in FIG. 12 so that the recording material guide portion 2 forms the recording material conveyance path 21. That is, it can be said that the reverse cover 3 forms a part of the recording material conveyance path 21. Then, when a recording material jam occurs in the image forming apparatus 1, the reversing cover 3 is opened as shown in FIG. 13, and the user accesses the recording material conveyance path 21 to perform the recording material jam processing. .

  The image forming apparatus 1 is provided with a mechanism for detecting opening and closing of the reversing cover 3. The detection mechanism will be described below.

  1-5 is a figure which shows the structure in a present Example.

  FIGS. 1A and 1B are perspective views of the reversing cover 3 in a closed state and an open state, respectively. The reversing cover 3 is rotatably supported by the rear cover 26 (the main body of the image forming apparatus 1). When the reversing cover 3 in FIG. 1A is closed, the snap fit 27 provided on the reversing cover 3 is latched (locked) to the latching portion 28 of the rear cover 26. By rotating the reverse cover in the direction of arrow G from that state, the reverse cover 3 can be opened as shown in FIG. Here, the snap fit 27 and the latch portion 28 constitute a latch means according to the present invention, the snap fit 27 constitutes a first latch portion according to the present invention, and the latch portion 28 corresponds to the present invention. The 2nd latching | locking part which concerns is comprised.

  FIG. 2 is a perspective view of FIG. 1A viewed from the direction of arrow F. FIG. FIG. 3 is a view showing a state where the reversing cover 3 is closed, and FIG. 4 is a view showing a state where the reversing cover 3 is opened. Here, FIG. 3B and FIG. 4B are perspective views of the reversing cover 3 in a closed state and an open state, respectively. 3 (a) and 4 (a) are enlarged views of the open / close detection part of the reversal cover 3 corresponding to the states of FIGS. 3 (b) and 4 (b), respectively. FIG. FIG. 3 is an enlarged view of a portion surrounded by a two-dot chain line in FIG.

  The rear cover 26 is provided with a photosensor 29 as detection means for detecting the open / closed state of the reversing cover 3. The photo sensor 29 includes a light projecting unit 30 and a light receiving unit 31. And the position of the to-be-detected body is detected by detecting whether the light 32 from the light projecting section 30 is blocked or not by the to-be-detected body. In this embodiment, the snap fit 27 is a detected object.

In FIG. 3A, the snap fit 27 is hooked on the hook portion 28 (positioned at a hook position where the reverse cover 3 is hooked in the closed state), so that the snap fit 27 is light of the photo sensor 29. 32 is blocked. In this case, the photo sensor 29 detects that the reversal cover 3 is closed. On the other hand, in FIG. 4A, the snap fit 27 does not block the light 32 of the photosensor 29, and the photosensor 29 detects that the reverse cover 3 is open. When the photo sensor 29 detects that the reversal cover 3 is open and a double-sided printing command is issued, the user is warned to that effect. Then, after the user closes the reversing cover 3 and detects it, double-sided printing is started.

  FIG. 5B is a perspective view showing a state in which the reversing cover 3 is slightly opened. Fig.5 (a) is an enlarged view of the opening-and-closing detection part of the inversion cover 3 corresponding to the state of FIG.5 (b).

  In FIG. 5, the snap fit 27 is not hooked on the hook 28 and the reversing cover 3 is not completely closed. In this embodiment in which the snap fit 27 also serves as a detection object of the photo sensor 29, in this state, the snap fit 27 does not block the light 32 of the photo sensor 29, so that it is detected that the reverse cover 3 is open. .

  As described above, in the present embodiment, the snap fit 27 constituting the latching means also serves as the detected object of the photosensor 29. Therefore, the operation in which the snap fit 27 is engaged with the engagement portion 28 of the rear cover 26 and the operation in which the snap fit 27 blocks the light 32 of the photosensor 29 are synchronized. Therefore, it is possible to reliably detect opening and closing of the reversing cover 3.

  Further, in this embodiment, since high dimensional accuracy is not required for the reversing cover 3, the back cover 26, and the photo sensor 29, it is more advantageous than the conventional example in terms of the difficulty of manufacturing parts.

  In the present embodiment, the position of one of the two snap fits 27 is detected (the snap fit 27 hooked on the hook 28 is detected) to detect the opening / closing of the reversing cover 3. However, it is not limited to this. By adding another photo sensor 29 and detecting the positions of the two snap fits 27, it is possible to detect the opening and closing of the reversing cover 3 more reliably.

  In this embodiment, the snap fit 27 is provided on the reversing cover 3 and the hooking portion 28 is provided on the rear cover 26, but this is not restrictive. That is, the snap fit 27 may be provided on the rear cover 26 and the hooking portion 28 may be provided on the reversing cover 3. In this case, the photo sensor 29 is preferably provided on the reversing cover 3 side. However, the photo sensor 29 is provided on the rear cover 26, and the latching portion 28 provided on the reversing cover 3 is detected. You may make it detect that it exists in a state.

  Hereinafter, Embodiment 2 of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected about the component similar to Example 1, and the description is abbreviate | omitted.

  6 and 7 are perspective views of the image forming apparatus 1 as a whole.

  The cartridge door 34 as an opening / closing member is supported so as to be freely rotatable with respect to the front cover 35. In the normal printing state, the printer is used in a closed state as shown in FIG.

The image forming apparatus 1 according to the present exemplary embodiment is configured such that a process cartridge 41 including process devices such as a photosensitive drum 12, a charger, a developing device, and a cleaning device is detachable. The process cartridge 41 is attached and detached with the cartridge door 34 opened as shown in FIG. That is, the cartridge door 34 is provided so as to be openable and closable with respect to the main body of the image forming apparatus 1, and can be said to be a member that is opened and closed when the process cartridge 41 is attached to and detached from the image forming apparatus 1.

  FIG. 8 is an enlarged view of a portion surrounded by a two-dot chain line in FIG. 6, and a part is cut so that the inside can be seen.

  The cartridge door 34 is provided with a latching claw 42 so as to freely rotate, and is biased in the direction of arrow H by a latching claw spring 43. When the cartridge door 34 is closed, the latching claw 42 is latched on the latching portion 44 of the upper cover 37. Here, the latching claw 42 and the latching part 44 constitute the latching means according to the present invention, the latching claw 42 constitutes the first latching part according to the present invention, and the latching part 44 is the main latching part. The 2nd latching | locking part which concerns on invention is comprised.

  The upper cover 37 is provided with a photo sensor 29 for detecting the open / closed state of the cartridge door 34. The photo sensor 29 includes a light projecting unit 30 and a light receiving unit 31. And the position of the to-be-detected body is detected by detecting whether the light 32 from the light projecting section 30 is blocked or not by the to-be-detected body. In this embodiment, the latching claw 42 is a detected object.

  In FIG. 8, it is detected that the latching pawl 42 blocks the light 32 of the photosensor 29 and the cartridge door 34 is closed.

  When the latching claw 42 does not block the light 32 of the photosensor 29, it is detected that the cartridge door 34 is open, and when a print command is issued in this state, a warning is given to the user. Then, after the user closes the cartridge door 34 and detects it, printing is started.

  FIG. 9 is a perspective view showing a state in which the cartridge door 34 is slightly opened. This state is a state in which the latching claw 42 is not latched to the latching portion 44 and the cartridge door 34 is not completely closed. In this embodiment in which the latching claw 42 also serves as the detection object of the photosensor 29, in this state, the latching claw 42 does not block the light 32 of the photosensor 29, so that the cartridge door 34 is open. Detect.

  As described above, in this embodiment, the hooking claws 42 constituting the hooking means also serve as the detected body of the photosensor 29.

  Therefore, the operation in which the latching claw 42 is latched on the latching portion 44 of the upper cover 37 and the operation in which the latching claw 42 blocks the light 32 of the photosensor 29 are synchronized. Therefore, the opening / closing of the cartridge door 34 can be reliably detected.

  Further, in the present embodiment, since high dimensional accuracy is not required for the cartridge door 34, the upper cover 37, and the photosensor 29, it is more advantageous than the conventional example in terms of the difficulty of manufacturing parts.

  Hereinafter, Embodiment 3 of the present invention will be described with reference to FIGS. 6, 7, 10, and 11. In addition, the same code | symbol is attached | subjected about the component similar to Example 1, 2, and the description is abbreviate | omitted.

  The cartridge door 34 is supported with respect to the front cover 35 so as to freely rotate. In the normal printing state, the printer is used in a closed state as shown in FIG.

The image forming apparatus 1 according to the present exemplary embodiment is configured such that a process cartridge 41 including process devices such as a photosensitive drum 12, a charger, a developing device, and a cleaning device is detachable. The process cartridge 41 is attached and detached with the cartridge door 34 opened as shown in FIG.

  FIG. 10 is an enlarged view of a portion surrounded by a two-dot chain line in FIG. 6, and a part thereof is cut so that the inside can be seen.

  The cartridge door 34 is provided with a latching claw 42 so as to freely rotate, and is biased in the direction of arrow H by a latching claw spring 43. When the cartridge door 34 is closed, the latching claw 42 is latched on the latching portion 44 of the upper cover 37. The hooking claw 42 is hooked on the hooking portion 44, and is positioned at a hooking position where the cartridge door 34 is hooked in the closed state with respect to the main body of the image forming apparatus 1.

  The upper cover 37 is provided with a micro switch 45. The micro switch 45 switches the switch by pushing the actuator unit 46, which is a part of the switch, in the direction of arrow I with the operating body, and closes an electric circuit (not shown), thereby powering the image forming apparatus 1 main body and the power source. Connected to supply power to the image forming apparatus 1. When the actuator unit 46 is not pushed by the operating body, an electric circuit (not shown) is opened, the connection between the main body of the image forming apparatus 1 and the power source is cut off, and the power supplied to the image forming apparatus 1 is forced. Cut off. In this embodiment, the latching claw 42 is the operating body, and when the cartridge door 34 is closed, the latching claw 42 is positioned at the latching position, so that the latching claw 42 pushes the actuator portion 46 and switches. Will be switched. When the cartridge door 34 is in the open state, when the latching state of the latching claw 42 is released, the switch is switched by the actuator body 46 not being pushed.

  FIG. 11 is a view showing a state in which the latching claw 42 is not latched on the latching portion 44 and the cartridge door 34 is not completely closed and is slightly opened. In the state shown in FIG. 11, since the latching claw 42 moves from the latching position and moves away from the microswitch 45, the latching claw 42 does not press the actuator portion 46, so the microswitch 45 has an electric circuit (not shown). The circuit is opened, and the power supplied to the image forming apparatus 1 is forcibly cut off.

  As described above, in this embodiment, the latching claw 42 constituting the latching means also serves as an operating body that presses the actuator portion 46 of the microswitch 45.

  Therefore, the operation in which the latching pawl 42 latches on the latching portion 44 of the upper cover 37 and the operation in which the latching pawl 42 presses the actuator portion 46 of the micro switch 45 are synchronized. Accordingly, it is possible to reliably prevent the problem that the image forming apparatus 1 operates in a state where the cartridge door 34 is not completely closed, and the image forming apparatus 1 does not operate in a state where the cartridge door is completely closed. It becomes possible.

  In the present embodiment, the opening / closing of the cartridge door 34 and the opening / closing of the micro switch 45 that shuts off the power supplied to the image forming apparatus 1 are interlocked. However, not only the cartridge door 34 but also the first embodiment has been described. The present invention can also be applied to an opening / closing member such as the reversing cover 3.

It is a perspective view which shows the open / close state of the inversion cover in Example 1 of this invention. It is a perspective view including the opening / closing detection mechanism part of the inversion cover in Example 1 of this invention. The perspective view (Drawing 3 (b)) which shows the state where the inversion cover was closed in Example 1 of the present invention, and the expansion perspective view (Drawing 3 (a)) of the opening-and-closing detection mechanism part of the inversion cover in that state is there. The perspective view (Drawing 4 (b)) which shows the state where the inversion cover opened in Example 1 of the present invention, and the expansion perspective view (Drawing 4 (a)) of the opening-and-closing detection mechanism part of the inversion cover in that state is there. The perspective view (Drawing 5 (b)) which shows the state where the inversion cover opened slightly in Example 1 of the present invention, and the expansion perspective view of the opening-and-closing detection mechanism part of the inversion cover in that state (Drawing 5 (a)) ). FIG. 6 is a perspective view illustrating the entire image forming apparatus in a state where a cartridge door is closed in the second and third embodiments of the present invention. FIG. 6 is a perspective view illustrating the entire image forming apparatus in a state where a cartridge door is opened in Embodiments 2 and 3 of the present invention. It is an expansion perspective view of the state where the cartridge door closed in Example 2 of the present invention. FIG. 9 is an enlarged perspective view of the cartridge door according to the second embodiment of the present invention with the cartridge door slightly opened. It is an expansion perspective view of the state where the cartridge door closed in Example 3 of the present invention. FIG. 9 is an enlarged perspective view of a state in which the cartridge door is slightly opened in Embodiment 3 of the present invention. 1 is a diagram illustrating a schematic configuration of an image forming apparatus in Embodiment 1 of the present invention. 1 is a diagram illustrating a schematic configuration of an image forming apparatus in Embodiment 1 of the present invention. It is a perspective view which shows the open / close state of the inversion cover in a prior art example. It is a perspective view including the opening / closing detection mechanism part of the inversion cover in a prior art example. FIG. 16 is a perspective view (FIG. 16 (b)) showing a state where the reversal cover is closed in a conventional example, and an enlarged perspective view (FIG. 16 (a)) of the open / close detection mechanism portion of the reversal cover in that state. FIG. 17A is a perspective view showing a state in which the reversing cover is opened in a conventional example (FIG. 17B), and FIG. 17B is an enlarged perspective view of the opening / closing detection mechanism portion of the reversing cover in that state (FIG. FIG. 18 is a perspective view (FIG. 18 (b)) showing a state where the reversing cover is slightly opened in the conventional example, and an enlarged perspective view (FIG. 18 (a)) of the opening / closing detection mechanism portion of the reversing cover in that state. It is a figure which shows schematic structure of the image forming apparatus in a prior art example. It is a figure which shows schematic structure of the image forming apparatus in a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Recording material guide part 3 Reversing cover 26 Back cover 27 Snap fit 28 Latch part 29 Photo sensor 30 Light projection part 31 Light receiving part 32 Light 33 Rib 34 Cartridge door 41 Process cartridge 42 Latch claw 43 Latch claw Spring 44 Latch 45 Micro switch 46 Actuator

Claims (14)

In an image forming apparatus comprising: an opening / closing member that can be opened and closed with respect to the apparatus main body; and a latching unit that latches the opening / closing member with respect to the apparatus main body.
An image forming apparatus comprising: a detecting unit that detects the hooking unit.   The said latching means is provided with the 1st latching part provided in the said opening-and-closing member side, and the 2nd latching part provided in the apparatus main body side and latches with the said 1st latching part, The said detection means The image forming apparatus according to claim 1, wherein the first hooking portion is detected.   2. The image forming apparatus according to claim 1, wherein the opening / closing member is in a closed state with respect to the apparatus main body when the hooking unit is in a hooked state.   The image forming apparatus according to claim 1, wherein the opening / closing member forms part of a recording material conveyance path.   4. The image forming apparatus according to claim 1, wherein the opening / closing member is a member that is opened / closed when a cartridge including the electrophotographic photosensitive member is attached to and detached from the image forming apparatus. apparatus.   The image forming apparatus according to claim 1, wherein the detection unit includes a photosensor.   The image forming apparatus according to claim 1, wherein the detection unit includes a micro switch. In an image forming apparatus, comprising: an opening / closing member that can be opened and closed with respect to the apparatus main body; a latching unit that latches the opening / closing member with respect to the apparatus main body; and a switch that switches the apparatus main body to and from the power source. ,
The image forming apparatus according to claim 1, wherein the hooking means can switch the switch.   The hooking means includes a first hooking portion provided on the opening / closing member side, and a second hooking portion provided on the apparatus main body side and hooked with the first hooking portion. The image forming apparatus according to claim 8, wherein a latching part switches the switch.   The image forming apparatus according to claim 8, wherein the opening / closing member is in a closed state with respect to the apparatus main body when the hooking unit is in a hooked state.   In the switch, when the latching means is in a latching state and the opening / closing member is in a closed state with respect to the apparatus main body, the apparatus main body is connected to a power source, and the latching state of the latching means is released. 11. The image forming apparatus according to claim 10, wherein when the opening / closing member is in an open state with respect to the apparatus main body, the apparatus main body and the power source are shut off.   The image forming apparatus according to claim 8, wherein the opening / closing member forms a part of a recording material conveyance path.   12. The image forming apparatus according to claim 8, wherein the opening / closing member is a member that is opened and closed when a cartridge including an electrophotographic photosensitive member is attached to and detached from the image forming apparatus. apparatus. The image forming apparatus according to claim 8, wherein the switch is a micro switch.

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