JPH01179185A - Device for testing process unit - Google Patents

Abstract

PURPOSE:To inspect the rotating state of each shaft in a state being similar to mounting by setting a process unit to a device body and transferring suitably or interrupting the rotation of a driving shaft against other shaft. CONSTITUTION:A process unit 2 is set to the prescribed position of a main body 1, and couplings provided on shafts of a photosensitive drum 9, a developing roll 19 and a replenishing roll 17 are coupled to corresponding couplings 39-41 of the body 1. When a motor is driven, the drum 9 is driven to rotate through a powder clutch 42 and a rotary shaft 36. In this state, by a pulse plate 57 and a photointerrupter 56, a rotational speed and a driving torque of each shaft for interlocking with a shaft 55 can be detected. Subsequently, when electromagnetic clutches 52, 53 are turned ON, respectively, the roll 19 or 17 is driven to rotate together with the drum 9, and its torque is detected. If the detected torque is abnormal, it is displayed on a display part 35. In such a way, the rotating state of each shaft can be inspected in a state being similar to mounting.

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to
This is a test device for inspecting the rotational state of the photoreceptor, etc. (Prior Art) In recent years, for example, electronic photocopying machines, etc., have been integrated with consumables such as a photoreceptor, 1NI electric device, and developing device as a process unit, and are integrated into the main body of the copying machine. On the other hand, there are devices that can be attached and detached freely. By the way, behind such a process unit, at least the photoreceptor and developer! For those equipped with A\, it is necessary to at least inspect whether the photoreceptor and the rotation of the developer O-ra and replenishment O-ra in the developing VR device are good. Conventionally, such inspections were carried out (in the case of one product, a jig such as a 1-lux meter was attached to each O-ra, and the rotating state of each item was inspected on each O-ra turtle. In the usage state, each of the above-mentioned O-Rs is driven by a driving means such as a motor in a mutually interlocking state while being subject to torque regulation. It is difficult to perform a rotational inspection while it is installed in a
When each roller is inspected one by one, there is a large time loss, and there is a disadvantage that the efficiency is low and the number of man-hours increases. (Object of the invention) The present invention is intended to solve the above problems, and has the following objects:
It is an object of the present invention to provide a test device for a process unit that can inspect the rotational state of a photoreceptor, etc. that is pulled into the 0 process unit l- in a state close to that of an actual machine, and that can perform the inspection efficiently. purpose. (Structure of the Invention) The present invention is a test device for inspecting the rotational state of a process unit that incorporates at least a photoreceptor and a developing device, and includes at least a developing roller and a replenishment roller in the developing device. The entire process unit can be supported in a predetermined position 8! an i-mounting main body, shafts connected to the photoreceptor, the developing roller, and the replenishing roller, respectively, a first drive stage that drives one of these shafts as a drive shaft;
6. A torque adjustment means for adjusting the drive torque of the 3-J" stage to a constant level, and a switching means for transmitting and cutting off the rotation of the drive shaft VJ to and from other axes, and 6. A detection means for detecting the rotational state of the E-marked drive shaft when rotation is transmitted and connected to the shaft, and a detection means for controlling the operation of each means in response to a signal from the operating section, The device is equipped with means for receiving the signal from stage f and displaying the test result on the display section.In this configuration, the pro-wrestling unit 1 is set at a predetermined position on the main body of the apparatus, and the switching stage 1 is set. By driving the drive shaft in a state where all of the drive shafts are switched to the cut-off state, the rotational state of the drive shaft can be inspected.Furthermore, the switching means is appropriately switched to cause the drive shaft and the other shafts to be connected to each other. By doing so, it is possible to inspect the rotational state regarding each axis. (Actual Drop Example) FIG. The figures show the structure of the process unit 1- installed in the device. In these figures, 1 is the test device main body, 2 is the process unit, and the unit insertion hole into which the process units I to 2 are inserted is shown. 3 is provided on the main body 1.The main body 1 includes a positioning bin 4.3 for setting the process unit 2 at a predetermined position n (see the two-dot chain line in FIG.
5 are provided, and positioning brackets 7.8 are provided on the process conibut 2 side corresponding to these positioning pins 4.5. The process unit 2 includes a photoreceptor drum 9 in its unit case 10, and a main charging section 11, a developing section (developing device) 13J3, and a cleaning section 14 are provided in sequence facing the circumferential surface of the drum 9. It is being The developing section 13 includes a hopper section 16, a replenishment roller 17, an agitation roller 18, and a developing row 519, and the toner 15 filled in the hopper section 16 is supplied to the developing roller 19 side by driving the replenishment roller 17. The cleaning section 14 includes a spring 21 for applying a predetermined blade pressure to the cleaning blade 20.
It is equipped with The height of the charging wire can be adjusted by suitably rotating the adjustment screw of the 1st band 7 part 11, although the 3T diameter is not shown. Further, a condenser lens 12 is provided on the main body 1 side below the lens unit 2. In the unit case 10, an ff1l hole 22.23 is formed facing the adjusting screw of the charging section 11 and the spring 21 of the cleaning section 14, and an exposure opening facing the condensing lens 12. 24 are provided,
Further, the photosensitive drum 9 is provided with an opening 25 that exposes the drum 9 downward. In addition, in Figure 2, 1
0a is a handle used when operating the process unit 2 with respect to a copying machine or a testing device. On the other hand, the wall of the unit insertion hole 3 on the main body 1 side is also formed with openings or openings [-1] opposite to the openings 22, 23.1m and 24.25, and the main body 1 further includes: Exposure lamp 26 for exposing the photoreceptor 9, photoreceptor 9
A surface electrometer 27, 28, a height adjustment driver 29, a blade I, and a measuring device 30 are provided to measure the surface potential of the blade. The height adjustment driver 29 and the blade pressure measuring device 30 can be inserted into the process unit l-2 through the j%1 hole 22.23, respectively, and the height adjustment driver 29 can be inserted into the process unit l-2 for adjusting the charging part 11. The screws are rotated and driven up to adjust automatically. A shutter 31 is provided on the earth in the gap 24, and is equipped with a solenoid 32 that drives and closes the shutter 31, and a solenoid 32 that drives and closes the shutter 31. A simulated contact glass G leading to the lens 12 is provided. By opening and closing the shutter 31, the light from the exposure lamp 26 is switched between a state in which the photoreceptor 9 is irradiated and a state in which it is not irradiated, thereby measuring the bright potential and t+a potential of the photoreceptor 9. Although not shown, a portion of the light from the exposure lamp 26 is also used to eliminate the electric charge on the photoreceptor 9. Further, a high voltage transformer (not shown) is provided on the main body 1 side to supply a high voltage to the main charging section 11 in the process unit 2. One surface potential detector 127 is provided at both axial ends and at the center of the photoreceptor 9, and thereby the charged portion within the body is measured in η samples. The other surface electrometer 28 is scanned in the axial direction of the photoreceptor 9, and thereby the surface electrometer 28 is scanned in the axial direction of the photoreceptor 9.

[Charging unevenness is detected. Further, the blade pressure measuring device 30 is configured to detect the blade pressure, etc. by pressing the bit at the tip of the device against the blade pressure applying member 21 by a predetermined amount and measuring the pressure at this time. Surface potential over: 127.28 and blade pressure measuring device 30
Detection signals from the main body 1 are input to a control section 34 provided inside the main body 1, and this υll11 section 34 receives these detection signals and the control section 33 provided on the outer surface of the main body 1. Upon receiving the output signal, a signal for operating the height adjustment driver 29, solenoid 32, and display section 35 is output. This display section 35r- is a, II
According to the instructions of the Ogori Department 34, if the detected value is outside the predetermined standard value, the lamp corresponding to the defective part will light up, and if it is within the standard value, a passing lamp will light up indicating that the product is good. Covers the lights. Further, in this device, as a feature of the present invention, the photosensitive drum 9 of the 11-process unit 2 is located at the rear of the device.
A mechanism for inspecting the rotational states of the roller 19 and the supply roller 17 is provided. This bli
'1M will be explained based on FIGS. 4(a) to (C) and FIG. 5. On the rear inner wall 1a of the apparatus main body 1, there are shafts 36, 37, .
38 are supported, and the front ends of these shafts (Fig.
At the left end in a), saw rings 39, 40, 41 for connection to each roller are provided. The shaft 36 is
It is connected to the output side of the powder clutch (torque adjustment means) 42, and furthermore, the input side gear 4 of this powder clutch 42 is connected to the output side of the powder clutch (torque adjustment means) 42.
3. It is connected to a drive gear 45a of a main motor (drive means) 45 via J3 and a gear 44.The main motor 45 directly rotates as a drive shaft, and the drive torque is transmitted to the powder clutch 42.
It is kept constant by the action of The powder clutch 42, gear 44, and gear 45 are connected to the back wall 1 of the main body 1 as shown in FIG. 4(b).
It is supported by b. Two large and small gears 46 and 47 are fixed to this shaft 36, and the gear 46 is connected to a gear r49 via a gear 48, and the gear 47 is connected to a gear 51 via gears 50a and 50b. The four gears are connected to the upper two shafts 37 via a first electromagnetic clutch (switching means) 52, and the gear 51 is connected to the upper two shafts 37 via a second electromagnetic clutch (switching means) 53.
The rotation of each gear 49.51 is transmitted to and interrupted from the shaft 37.38 by turning on and off these 7JR magnetic clutches 52.53. As an example, a switching structure using the second electromagnetic clutch 53 is shown in FIG. The gear 51 is rotatably supported on the shaft 38, and a member 54 having a shape that matches the 1!11 end of the gear 51 is fixed to the shaft 38 side, so that the shaft 38 passes through it. A second electromagnetic clarifier 1-53 is fixed to the main body 1 side. The second electromagnetic clutch 53 has an electromagnet 53a that is turned on and off by a control signal from the &lj control section 34, and when the electromagnet 538 is on, it attracts the gear 51 toward the receiving member 54, keeping both of them tightly sealed. make it hit Therefore, when the second electromagnetic clutch 53 is off, the gear 51 rotates freely relative to the shaft 48, whereas when the second electromagnetic clutch 53 is on, the gear 51 is It rotates together with the shaft 38 due to the frictional force between the shaft 38 and the shaft 38. Note that this structure also applies to the first electromagnetic clutch 52. The shaft 55 to which the gear 50b is fixed has both ends supported by the inner wall 1a and the back wall 1b of the main body 1, and near the shaft 55 there is a photointerrupter ( A detection means) 56 is provided. This photointerrupter 56 is fixed to a mounting plate 1C provided on the main body 1 side. On the other hand, in Jō55,
By rotating this shaft 55, the light emitting element P and the light receiving element ii'
A pulse root shaped to continuously block the light between (detection 1
This pulse root 57 and the photointerrupter 56 reduce the rotational speed of the shaft 55.
rotation state) is detected, and the detection signal is input to the control section 34. Further, this shaft 55 is provided with an electromagnetic brake 58 for forcibly stopping its rotation, and this electromagnetic brake 58 is also turned on and off by the control signal from the control section 340 described above. Next, the operation of inspecting the rotational state of each roller using this lit will be explained with reference to chart 70 in FIG. First, the process unit 2 is placed in a predetermined position on the main body 1, and the couplings provided on the shafts of the photoreceptor drum 9, the current 1910-ra 19, and the replenishment roller 17 are connected to the corresponding ones. It is connected to the saw ring 39.40.41 of the axis 36.37°38.Then, the operation part 3
3 (step S1), the control unit 34 outputs a signal, which drives the main motor 45 (step S2).
), the powder clutch 42 is activated (step 33).
. At this time, the powder in the powder clutch 42 is bound by the excitation coil and becomes solid, and the input shaft and output shaft are connected. In addition, in the first stage, the first
The second electromagnetic clutches 52 and 53 are in an off state. From this state, the electromagnetic brake 5B is turned on by the signal 'tA11DrA34 (step S4), thereby strongly stopping the rotation of the shaft 55 υ1. Therefore, the gear 50a meshing with the gear 50b of this shaft 55
, a gear 47, and a shaft 3 to which this gear 47 is fixed.
66 are forcibly stopped, and only the output side of the powder clutch 42 is 1? It is in a state of idling against the frictional force, and as a result, the powder in the powder clamp 42 is evenly bound. Then, [1 minute after turning on the i-brake 58 (YES in step S5), the same brake 58
(step S6), the shaft 36, gears 47, 48, 49, 50a. 50b rotates, thereby starting rotation of the photosensitive drum 9 connected to the shaft 36. In this state, the number of pulses is 57 and the photo interrupter is 5.
6 detects the rotational speed of the shaft 55, thereby indirectly detecting the rotational torque of the shaft 36 and the photosensitive drum 9 connected thereto (step 37). Since the driving torques of the shaft 36 and the photoreceptor drum 9 are supposed to be kept constant by the operation of the powder clutch 42 under normal conditions, the rotational torque of the shaft 36 and the photoreceptor drum 9 detected at this time is If it differs from the standard value, it can be determined that there is an abnormality in the rotational state of the photosensitive drum 9. Therefore, if this torque is abnormal (NO in step S8), a message indicating that the torque is abnormal is displayed on the display unit 35 (step S9). You can know that there is. If there is no abnormality in the torque of the photosensitive drum 9, 1, I
I 611 part 34 G), the first electromagnetic clutch 52 is first switched from off to on (step 5).
10). As a result, the gear 49 and the shaft 37 are brought into an interlocking state, and the developing roller 19 is rotationally driven by the photosensitive drums 9 and 6. After detecting the torque of the shaft 36 at this time (step 511), the first electromagnetic gangway 52 is switched off (step 512), and if the detected torque differs from the standard value (step So No), a message indicating that there is an abnormality is displayed in the same way as above (step S
s). At this point, it is known that there is no abnormality in the photosensitive drum 9 as determined in step S8, so if the torque is not normal at this time, it is determined that there is an abnormality in the rotation of the current 111 roller 19. be able to. If there is no abnormality in the torque in this step S13, the second electromagnetic clutch 53 is turned on (step 514), and thereby the gear 51 and the wheel 38 are brought into an interlocking state, and the photoconductor The replenishment roller 17 is rotated together with the drum 9. And at this time axis 3
After detecting the torque of step 6 (step 515), the second electromagnetic clutch 53 is switched off (step Sm), and if the torque is different from the standard value (No in step Sv), h
An abnormality display is performed in the same manner as described above (step S9). Here, too, since it is known that the photosensitive drum 9 is normal based on the determination in step S8, if the torque is not normal at this time, it can be determined that there is an abnormality in the rotation of the supply roller 17. . After the abnormality display is performed in the above operation (step S
9), or after it is detected that there is no abnormality in l-lux at all stages (YES in step S17), the powder clutch 42 is turned off (step S), and the main dryer 45 is driven. is stopped (step 519). Thereafter, the main switch is turned off by the user (step 820). As described above, in this device, first, only the photoreceptor drum 9 is driven and the torque at that time is detected, and then the developing roller 51 is detected.
9 and replenishment roller 17 are individually interlocked with the photosensitive drum 9 to detect the torque at that time, thereby making it possible to inspect the rotational state of each roller 11. Therefore, unlike the conventional method, each O
-Compared to the f-stage, which inspects the rotation of the cylinder, it is possible to inspect the rotation in a state closer to that of the actual machine, and this inspection can be carried out efficiently by in-cylinder operation. Although the present invention inspects each roller by detecting the 11 rotation state of the drive shaft, it is not always necessary to directly install the detection means on this drive shaft, and as in this embodiment, 71! Accurate inspection can also be performed by detecting the rotation of the shaft 55, which always moves in conjunction with the shaft 36, regardless of the switching of the IO clutches 52 and 53. Further, in the same embodiment, the photoreceptor drum 9, the developing roller 19, the photoreceptor drum 9
, and the replenishment roller 17 are moved individually, but the rotation may be transmitted from the photosensitive drum 9 to the current wIO-ra 19 and the replenishment roller 17 in order, or the rotation may be transmitted to the other rollers in order. , for example fi ff 0-51
The inspection may be performed in conjunction with 86. t, Ij m111 part 34 fIII III k:
[lOL, However, in the same embodiment, it is automatically determined whether the detected torque is abnormal or not, and it is displayed.
For example, the detected f+fi may be directly displayed on the display section, and the bacteria used may be used separately from this clay. Also,[
Switching of the i-clutches 52, 53, etc. may be performed manually using a switch provided on the operating section 33. (Effects of the Invention) As described above, the present invention uses one of the backs of the shafts connected to the photoreceptor, the developer [1-ra, and the replenishment roller] as a drive shaft, which is driven under a constant torque. Each 0-
Compared to the conventional means of inspecting the rotation of each roller individually, the rotation inspection can be performed in conditions closer to the actual machine. This has the effect of being able to efficiently perform this with simple and simple operations.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of a testing device for a copying machine process unit according to an embodiment of the present invention, FIG. 2 is a perspective view of the process unit, FIG. 3 is a sectional view of the same unit, and FIG.
) is a side view of the rotational inspection structure attached to the above test device, FIG. 101(b) is a plan view of the same structure, FIG. 101(C) is a front view of the same structure, and FIG. FIG. 6 is a flowchart showing a rotational inspection procedure using the same structure. 1...Test device main body, 2...Process unit, 9
... Photoreceptor drum, 17... Supply 0-ra, 19...
・Developing roller, 34...control unit, 35...display unit,
36.37.38... Shaft, 42... Powder clutch (torque adjustment means), 45... Main motor (fitting-in means), 52.53... Electromagnetic clutch (1 stage switching), 5
6... Photo interrupter (detection means), 57...
Pulse root (detection means). Special i1'r ili applicant San [I] Kogyo Co., Ltd. Agent Patent attorney Kosho Etsushima
Patent attorney f, IIWTfl 1 same
Patent Attorney Blackboard Yasuo Figure 2 Figure 3 Figure 5

Claims (1)

[Claims] 1. A test device for inspecting the rotational state of a process unit that includes at least a photoreceptor and a developing device, and which includes at least a developing roller and a replenishment roller, and that supports the entire process unit in a predetermined position. an apparatus main body, a shaft connected to the photoreceptor, the developing roller, and the replenishment roller, respectively, a driving means for driving one of these shafts as a driving shaft, and a driving torque by this driving means is adjusted to a constant value. It includes a torque adjustment means and a switching means for transmitting and cutting off the rotation of the drive shaft to other shafts, and the switching means controls the rotation of the drive shaft when the rotation is transmitted to and cut off from each shaft. The present invention includes a detection means for detecting the rotational state, and a control means for receiving signals from the operating section to control the operation of each means, and for receiving the signals from the detection means and displaying the test results on the display section. Characteristic process unit testing equipment.