JP2977225B2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to an image forming apparatus that forms a document image on an image carrier by an optical member scanned by a plurality of scanning units.

(Prior Art) In an image forming apparatus such as an electrophotographic apparatus, in order to form and expose a document image placed on a document table on an image carrier in a main body, an exposure lamp, a mirror, 2. Description of the Related Art An optical apparatus in which an optical member including a lens or the like is mounted on an optical carriage serving as a plurality of scanning units and which performs scanning movement by a motor or the like is often used.

In such a scanning type optical device, when packing the image forming apparatus, the optical member such as a movable lens is fixed so that the optical member does not become twisted or damaged during transportation. Create need. For this reason, conventionally, before packing, remove the original glass on the upper surface of the main body, further remove the cover of the optical device, and then manually move each optical member to a predetermined fixing position, and then attach a fixing jig. After the optical member is prevented from moving during transportation, the optical device cover and the original glass are returned to their original state, and then packed.

However, in such a device, as described above,
In order to move the optical member to the fixed position, it is necessary to remove the heavy original glass and the like and further attach the original glass to the main body again after the movement is completed, the operation is troublesome, and the operability at the time of shipping is significantly deteriorated. Has the disadvantage that the same operation must be performed to release the fixation of the optical member even when unpacking.

(Problems to be Solved by the Invention) Conventionally, when packing an image forming apparatus, the optical member is manually moved to a fixing position and then fixed by a fixing jig. In addition, there is a problem that the original glass and the like must be attached and detached, so that the packing operation in the production line is troublesome and the workability is reduced.

Therefore, the present invention is to solve the above-mentioned problem, and to provide an image forming apparatus that easily and automatically performs a work for fixing an optical member before packing and reduces a packing work on a production line at the time of shipping. With the goal.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a platen on which a document is placed, and a platen provided below the platen in a predetermined direction along the platen. A first moving optical member that scans while exposing the document by moving, and an optical image of the document that moves in the predetermined direction in cooperation with the first moving optical member and is obtained by exposure scanning A second movable optical member on which a mirror for reflecting the light toward the image carrier is mounted, and a lens for changing the optical image of the original document reflected from the second movable optical member are mounted and set. A third moving optical member that moves in the predetermined direction according to the set magnification, a first driving unit that drives the first and second moving optical members, and a driving of the third moving optical member Second driving means, and the first to third moving optics Instruction means for instructing a packaging mode for fixing a material, and when the instruction means designates a packaging mode, the first and second movable optical members are moved to a movement limit in a first direction. The first driving means is controlled to move, and the second driving means is moved to move the third moving optical member to a movement limit in a second direction opposite to the first direction. And control means for controlling.

(Operation) The image forming apparatus of the present invention is provided with an exposure lamp provided at a lower portion of a document table and moves in a predetermined direction along the document table to thereby operate while exposing the document as a first moving optical member. A first carriage, a second carriage as a second moving optical member on which a mirror for reflecting light guided from the first carriage is mounted, and a lens provided in the optical path are mounted and set. It has a base frame as a third moving optical member that moves the lens according to the magnification. When a packaging mode for fixing the movable optical member is instructed when the image forming apparatus main body is carried, the first and second carriages are moved to the full left end of the movable range and the base frame is moved. It is moved to the full right edge of the device out of the possible range. Thus, if only one of the movable directions is fixed, each movable optical member can be completely fixed to the device,
Packing work can be performed easily.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 11. FIG. 1 is a schematic explanatory view of an image forming apparatus 10, wherein an original D placed on an original glass 12 above a main body 11 is shown.
The upper image is formed on the photosensitive drum 13 as an image carrier,
The optical device 14 that exposes the photosensitive drum 13 is set at a home position, which is a copy start position. Around the photosensitive drum 13, a charging device 15, an exposure position 14a by the optical device 14, a developing device 16, a transfer peeling charger 17, a cleaning device 18, and a charge removing lamp 20 are provided. Below the photosensitive drum 13, a cassette 21 for accommodating sheet paper P as an image support is provided. In the main body 11, a turn guide 23 and a U-turn roller 24 for changing the direction of the sheet P fed from the cassette 21 by the feed roller 22 toward the photosensitive drum 13 are provided. A paper transport path 27 is formed to lead to the paper discharge tray 26 on the left side of the main body via the body drum 13. A manual feed roller pair 28, a hand guide 29, and a registration roller pair 30 are provided on the upstream side of the photoconductor drum 13 in the paper conveyance path 27, and the conveyance belt 31, the fixing roller pair 32, A roller pair 33 is provided.

Next, the optical device 14 will be described. A first carriage 38a as a scanning unit on which an exposure lamp 36 as a light irradiation unit of the optical member and a first mirror 37a as a light reflection unit of the optical member, and a second mirror 37b as a light reflection unit; The second carriage 38b, which is a scanning unit on which the third mirror 37c is mounted, has one side supported by the screw shaft 40 and the other side mounted on a guide rail (not shown).
Reference numeral 41 denotes a scanning motor which is a driving means composed of a pulse motor for reciprocating the first and second carriages 38a and 38b. The pulley 42b is driven. The first carriage 38a is fixed to the drive belt 43 by a protruding belt fixing portion 44,
During exposure, the drive belt 43 is driven to reciprocate. A third pulley 46a and a fourth pulley 46b are provided at both ends of the second carriage 38b on the side where the screw shaft 40 is mounted. A driving wire 48 fixed at one point is wound around 47, and the second carriage 38b is
As the first carriage 38a reciprocates, the first carriage 38a reciprocates at half the speed of the first carriage 38a. Reference numeral 50 denotes an on / off state of a home switch 51 provided on the main body 11 for detecting the home positions of the first and second carriages 38a and 38b.
The first is provided integrally with the wire fixing portion 47 so as to perform the OFF.
Terminal.

On the other hand, a first base frame 53a which is a scanning unit on which a lens unit 52 which is a light condensing unit of the optical member is mounted,
The second base frame 53b, which is a scanning unit on which the fourth mirror 37d and the fifth mirror 37e are mounted, has one side supported by the shaft 54 and the other side mounted on a guide rail (not shown). Reference numeral 56 denotes a driving means, which is a lens motor composed of a pulse motor. The lens motor includes a first gear 57, a lens pulley 58, and a first timing belt 60.
The base frame 53a is moved. 6
Reference numeral 1 denotes a driving means, which is a mirror motor composed of a pulse motor, which moves the second base frame 53b via a second gear 62, a mirror pulley 63, and a second timing belt 64. Reference numeral 66 denotes an on state of a lens switch 67 for detecting the home position of the lens unit 52,
The second terminal 68 for turning off the second base frame 53
A third terminal for turning on and off the mirror switch 70 for detecting the home position of b, 76 is a first base frame
Reference numeral 77 denotes a first attachment portion for attaching the first base belt 53b to the second timing belt, and reference numeral 77 denotes a second attachment portion for attaching the second base frame 53b to the second timing belt. And scanning motor 41, lens motor 56, mirror motor
61 is controlled by a control device 71 that controls the main body 11 via motor drivers 41a, 56a, 61a, respectively. The control device 71 has a copy key 72a,
A control panel 72 having a clear key 72b, a numeric keypad 72c as a mode input unit, a zoom key 72d, a display unit 72e, and the like.
Alternatively, signals from the home switch 51, the lens switch 67, the mirror switch 70, and the like are input.

Next, the operation will be described. After the manufacture of the image forming apparatus 10, the optical device 14 is first initialized when the optical device 14 is set at a fixed position at the time of packing in order to pack the main body 11. That is, the power switch (not shown) of the main body 11 is turned on, and the process proceeds to step 80. Then, while the [0,5] key is turned on by the ten keys 72c in step 80, the serviceman switch (not shown) is turned on in step 81, and the process proceeds to the adjusting code in step 82. still,
If the serviceman switch is not turned on, the fixing roller pair is not set in step 83 without performing the adjusting operation.
When the warming-up of 32 is started, and the completion of the warming-up is detected in step 84, the process reaches step 86 and copying is enabled.

On the other hand, in the case of the adjusting code in step 82, the process first proceeds to step 87, and the display section 72e displays that the adjusting code is the adjusting code. This allows step 88
When the operator enters [2, 3] from the numeric keypad 72c in the packing mode, the process proceeds to the carriage initialization mode in step 90. On the other hand, when the copy mode is set, if the operator key-in [0, 9] in step 91 without selecting the packing mode in step 88, the process returns to step 83 and the warming-up of the fixing roller pair 32 is started. It will be.

Next, in the carriage initialization mode of step 90, the process first proceeds to step 92, where it is determined whether or not the home switch 51 is on.
Proceed to. If the home switch 51 is off, the process proceeds to step 94 and the scanning motor 41 is moved counterclockwise by [1] step.
Is turned on or not, and if turned on, step 93
Return to If the home switch 51 is off,
Go to 97 and scan motor 41 turns counterclockwise to [244
8] Comparing whether or not the step has been moved, if it has not been moved, return to step 94 and repeat steps 94 to 97 until the home switch 51 is turned on, while the scanning motor 41 rotates counterclockwise [2448]. If it is moving stepwise, it is determined that a carriage error has occurred, and carriage initialization is stopped, and that fact is displayed on the display section 72e.

In step 93, the scanning motor 41 is moved clockwise by [40] steps, and the flow advances to step 98. In step 98, it is determined whether or not the home switch 51 is off. If the home switch 51 is on, it is determined that a carriage error has occurred.
Proceed to step 100. In step 100, the scanning motor 41 is moved counterclockwise by [1] step, and
Proceed to 1. In step 101, it is determined whether or not the home switch 51 is on. If the home switch 51 is on, the carriage initialization is terminated, and the process proceeds to step 110 which is the next lens unit initialization, whereas if it is off, the process proceeds to step 102. In step 102, it is determined whether or not the scanning motor 41 has moved counterclockwise by [41]. If not, the process returns to step 100 and repeats steps 100 to 102 until the home switch 51 is turned on. ,
[41] If it is moving stepwise, it is determined that a carriage error has occurred. In this way, the carriage initialization is completed, and the process proceeds to the lens unit initialization mode in step 110.

In the lens unit initialization mode in step 110, it is determined in step 111 whether or not the lens switch 67 is on. If the lens switch 67 is on, the process proceeds to step 112. If it is not turned on, the process proceeds to step 113, where the lens motor 56 is moved clockwise by [1] step. In step 114, it is determined whether or not the lens switch 67 is on. If it is turned on, the process returns to step 112. Also lens switch 67
If is off, the process proceeds to step 116, where it is determined whether the lens motor 56 has moved clockwise [951] steps.
If it has not moved, it returns to step 113 and repeats steps 113 to 116 until the lens switch 67 is turned on. [951] If it has moved, it is determined that a lens unit error has occurred and lens unit initialization is stopped. Is displayed on the display unit 72e.

In step 112, the lens motor 56 is turned counterclockwise [174
2] Move to step and proceed to step 117. In step 117, it is determined whether or not the lens switch 67 is off. If the lens switch 67 is on, it is determined that a lens unit error has occurred. In step 118, the lens motor
56 is moved clockwise by [1] step, and the process proceeds to step 120. In step 120, it is determined whether or not the lens switch 67 is on. If the lens switch 67 is on, the lens unit initialization is terminated, and the process proceeds to step 130, which is the next mirror unit initialization. Proceed to. In step 121, the lens motor 56
Compares whether or not has moved clockwise [951] steps, and if not, returns to step 118 and repeats steps 118 to 121 until the lens switch 67 is turned on, and has already moved [951] steps. If so, it is determined that a lens unit error has occurred. In this way, the lens unit initialization is completed, and the process proceeds to the mirror unit initialization mode in step 130.

In the mirror unit initialization mode in step 130, it is determined whether or not the mirror switch 70 is on in step 131. If the mirror switch 70 is on, the process proceeds to step 132. If the mirror switch 70 is off, proceed to step 133 to move the mirror motor 61 clockwise by [1] step, compare at step 134 whether the mirror switch 70 is on, and if it is on, go to step 132 Return. Mirror switch 70
If is off, the process proceeds to step 136, where it is determined whether or not the mirror motor 61 has moved clockwise by [174].
If not, the process returns to step 133 and repeats steps 133 to 136 until the mirror switch 70 is turned on. [174] If the step has been moved, it is determined that a mirror unit error has occurred, and the mirror unit initialization is stopped. Is displayed on the display unit 72e.

In step 132, the mirror motor 61 is turned counterclockwise [13
0] Move to step and proceed to step 137. In step 137, it is determined whether or not the mirror switch 70 is off. If it is on, it is determined that a mirror unit error has occurred. If it is off, the process proceeds to step 138. At step 138, the mirror motor 61 is moved clockwise by [1] step, and the routine proceeds to step 140.
At step 140, it is determined whether or not the mirror switch 70 is on. If it is on, the mirror unit initialization is terminated, and the routine proceeds to step 146. On the other hand, if the mirror switch 70 is off, the process proceeds to step 141. In step 141, it is compared whether or not the mirror motor 61 has moved clockwise by [174]. If not, the process returns to step 138 and repeats steps 138 to 141 until the mirror switch 70 is turned on. [174] If it is stepped, it is determined that a mirror unit error has occurred.

And in this way, the carriage initialization mode
After completing all the initialization of 90, the lens unit initialization mode 110, and the mirror unit initialization mode 130, the optical device 14 is moved to the packing position.

That is, first, in step 146, the scanning motor 41 is moved clockwise by [250] steps. Thereby, the first and second carriages 38a and 38b are moved to the left end in FIG. Next, at step 147, the mirror motor 61
Moves counterclockwise [118] steps. Thereby, the second base frame 53b is moved to the right end in FIG.
Further, in step 148, the lens motor 56 is moved counterclockwise by [636] steps. As a result, the first base frame 53a moves to the right end in FIG. 1 together with the second base frame 53b already moved to the right end, completes the packing mode, and proceeds to step 150. In step 150, the display unit 72e displays that the packing mode in the adjusting code has been completed.

Next, the second carriage 38b is fixed from the left side of FIG. 1 with fixing screws (not shown), and a plastic fixing member (not shown) is inserted from the front cover (not shown) side. Then, the first carriage 38a is fixed to a guide rail (not shown) by this fixing member.
Further, the first base frame 53a is fixed to the shaft 54 by a similar fixing member (not shown). Note that the second base frame 53b is pressed and fixed by the first base frame.

The image forming apparatus 10 is packed and transported with the optical device 14 fixed in this manner.

With this configuration, the control panel can be removed without removing the original glass and optical device cover when packing.
The optical device 14 can be easily and automatically moved to the fixed position simply by keying in the operation mode of the image forming apparatus 10 to the packing mode from the ten keys 72c on the 72.
Therefore, the work of fixing the optical device 14 performed on the production line to prevent the device from being rounded or damaged during transportation during packing is significantly reduced compared to the conventional method, and the cost can be reduced by shortening the work time. Become.

The present invention is not limited to the above-described embodiment, and can be variously changed in design. For example, the position of fixing the optical member at the time of packing is arbitrary, and all the optical carriages are moved to one side of the main body and fixed. You may do it. Further, the mode input means and the like are not limited, and a dedicated switch for switching to the packing mode may be provided.

[Effects of the Invention] As described above, according to the present invention, when packing an image forming apparatus, the optical member can be easily and automatically moved to the fixed position simply by inputting a packing mode signal by the mode input means. Therefore, in order to ensure the safety of the optical member during transportation, the packing operation performed on the production line is significantly reduced compared to the conventional case, and the operation time can be reduced.

[Brief description of the drawings]

1 to 11 show one embodiment of the present invention, FIG. 1 is a schematic explanatory view of an image forming apparatus, FIG. 2 is a schematic perspective view of an optical device, and FIG. 2, a perspective view in which a part of the carriage is omitted, FIG. 4 is a perspective view in which a part of the first base frame and the second base frame are omitted, and FIG. 5 is a top view in which a part of the control panel is omitted. , FIG. 6 is a schematic block diagram of the control device, FIG. 7 is a flowchart showing a machine initialization, FIG. 8 is a flowchart showing an adjusting code, FIG. 9 is a flowchart showing a carriage initialization mode, and FIG. FIG. 11 is a flowchart showing a unit initialization mode, and FIG. 11 is a flowchart showing a mirror initialization mode. 10 image forming apparatus, 11 body, 12 original glass, 13 photosensitive drum, 14 optical device, 38a first carriage, 38b second carriage, 53a First base frame 53b Second base frame 71 Controller 72c Numeric keypad

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kenji Urabe 70, Yanagicho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Toshiba Intelligent Technology Co., Ltd. -198057 (JP, U) Japanese Utility Model 1-57752 (JP, U) Japanese Utility Model 1988/63 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G03G 15/04- 15/04 120 G03G 15/00 550 G03G 21/00 370-512 G03G 21/14-21/18 G03B 27/50

Claims (1)

(57) [Claims] An original platen on which an original is placed; a first moving optical member provided below the original platen and moved in a predetermined direction along the original platen to scan while exposing the original; A second moving optical member mounted with a mirror which moves in the predetermined direction in cooperation with the first moving optical member and reflects a light image of the document obtained by exposure scanning toward an image carrier; A third moving optical member that mounts a lens that changes the optical image of the document reflected from the second moving optical member and moves in the predetermined direction according to a set magnification; A first driving unit that drives the first and second moving optical members; a second driving unit that drives the third moving optical member; and the first to third moving optical members. Indicating means for indicating that the mode is the packing mode for fixing; When the packing mode is instructed by the instructing means, the first driving means is controlled so as to move the first and second moving optical members to a movement limit in a first direction, and Moving the movable optical member in a second direction opposite to the first direction;
Control means for controlling the second drive means so as to move to a movement limit in the direction of.