JP5402281B2 - Image forming apparatus and recording material processing apparatus - Google Patents

Description

  The present invention relates to an image forming apparatus and a recording material processing apparatus.

  There has been proposed an apparatus for punching (punching), for example, a filing on an image-formed recording material. As a prior art described in the publication, in a sheet post-processing apparatus that transports a sheet in the transport direction and punches the sheet, a punching unit that punches the sheet and a predetermined position on the sheet in a direction perpendicular to the transport direction by placing the punching unit. 2. Description of the Related Art A sheet post-processing apparatus including a moving unit that moves a punching unit and a control unit that controls punching by correcting a positional deviation of the moving unit due to an influence during operation of the punching unit is known (for example, a patent) Reference 1).

JP 2006-142444 A

  An object of the present invention is to suppress operation noise, vibration, and the like in a recording material processing apparatus that perforates a recording material.

The invention according to claim 1 is an image forming unit that forms an image on a recording material, and a punching blade that forms a hole in the recording material by moving forward and backward with respect to the recording material on which the image is formed by the image forming unit. and a power received from the drive source includes a motion conversion unit which converts the forward and backward movement of the cutting head, a punching process unit that is movable in the movement direction intersecting the transport direction of the recording material, before Symbol drilling moving the processing unit in the moving direction, a first driving unit for performing positioning between the cutting head and the recording material, is held separately from the said punching unit, with respect to the recording medium A second drive unit for driving the motion conversion unit by applying power to the motion conversion unit, and a connection unit interposed between the second drive unit and the motion conversion unit to advance and retract the drilling blade ; , wherein the motion conversion unit, transfer of the perforated section The piercing blade is moved forward and backward with respect to the recording material by an operation that moves along the direction, and the connecting portion uses the power of the second driving portion when the piercing processing portion is moved by the first driving portion. In the image forming apparatus, the power of the second drive unit is transmitted to the operation conversion unit when performing the punching operation without transmitting the operation to the operation conversion unit .

According to a second aspect of the present invention, there is provided a housing that is driven from the outside and is provided so as to be movable in one direction, and is held by the housing, and advances and retreats with respect to the recording material to perforate the recording material. The drilling blade to be formed and the recording blade are moved to the one direction by receiving power from a drive unit that is held in the casing and is held separately from the casing. An operation conversion unit that moves forward and backward with respect to the recording medium, and is interposed between the operation conversion unit and the drive unit, and does not cause the drilling blade to move back and forth when the casing moves in the one direction. A recording material processing apparatus comprising: a connecting portion that transmits power by the driving portion when perforating a material.

According to the first aspect of the present invention, it is possible to suppress the generation of sound and vibration associated with the operation of the recording material processing apparatus in the image forming apparatus, as compared with the case where the second driving section is provided integrally with the punching processing section. possible and Do Ri, the moving direction of the punch processing section even when employing the configuration along the moving direction of the motion conversion unit, due to configuring the punching section and the second drive unit separately intended It is possible to prevent unperforated operations.

According to the fifth aspect of the present invention, compared with the case not having the present structure, it is possible to suppress generation of noise and vibration caused by the operation of the recording material processing apparatus and Do Ri, the moving direction of the housing operation Even when the configuration along the moving direction of the conversion unit is employed, it is possible to prevent the occurrence of a punching operation due to the configuration of the drive unit and the housing as separate bodies.

1 is a diagram illustrating a schematic configuration of an image forming apparatus according to an embodiment of the present invention. It is a figure for demonstrating the punching processing apparatus and the member provided in the circumference | surroundings. It is a general view of the rectilinear cam to which this embodiment is applied. It is a figure for demonstrating the connection of a piercing blade drive motor and a rectilinear cam. It is a figure for demonstrating the punching operation | movement by a punching processing apparatus. It is a figure for demonstrating a pressing member and a to-be-pressed part. It is a figure for demonstrating the whole structure of the punching processing apparatus with which Embodiment 2 is applied. It is a figure for demonstrating the whole structure of the punching processing apparatus with which Embodiment 3 is applied.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
<Embodiment 1>
FIG. 1 is a diagram illustrating a schematic configuration of an image forming apparatus according to an embodiment of the present invention.
The image forming apparatus 1 includes an image forming unit 2 that forms an image on a sheet as an example of a recording material, and a sheet processing unit 3 that performs post-processing on the sheet on which the image is formed by the image forming unit 2. Yes. In addition, the image forming apparatus 1 includes a control device 22 that comprehensively manages and controls the operation of each part of the image forming unit 2 and the sheet processing unit 3.

  The image forming unit 2 can be exemplified as a printer or a copier that forms a color image by electrophotography, for example, and has an operation panel 21 operated by a user. The operation panel 21 is, for example, a touch panel display, displays an operation menu, receives an operation instruction such as a processing request from a user, displays selection information for the user, an operation status of the apparatus, and the like.

The sheet processing unit 3 includes a receiving roller 61 that is a pair of rollers that receives a sheet on which an image is formed by the image forming unit 2, and a sheet conveyance path 62 through which the sheet received by the receiving roller 61 is conveyed. ing. Further, the paper processing unit 3 includes a punching processing device 40 that forms holes in the paper transported through the paper transport path 62.
In the paper transport path 62, the direction perpendicular to the transport direction (intersects at an angle of 80 degrees to 100 degrees) downstream of the paper transport direction (arrow X) of the punching processing device 40 (hereinafter referred to as the width direction). A paper position detection sensor 36 for detecting the position of the paper is provided. For the paper position detection sensor 36, for example, a configuration in which a plurality of light emitting elements and light receiving elements are arranged in the width direction can be used. In the case of this configuration, the position of the sheet in the width direction is detected based on from which light receiving element the light from the light emitting element can no longer be received (blocked). In the present embodiment, the width direction corresponds to “one direction”.
Further, the paper processing unit 3 has an introduction roll 63 that guides the rear end side of the paper to the punching processing device 40 by pushing the paper back upstream in the transport direction when punching the paper.

  The sheet processing unit 3 includes a compile tray 67 that collects and stores a plurality of sheets, and an exit roller pair 68 that is a roller pair that discharges the sheets toward the compile tray 67.

  The sheet processing unit 3 includes a plurality of paddles 69 that rotate to push the rear end of the sheet toward the end guide 67a of the compile tray 67, and a stapler 70 that binds a bundle of sheets. Further, an eject roller 71 is provided that conveys a bundle of sheets accumulated on the compilation tray 67 to the stacker tray 72.

FIG. 2 is a diagram for explaining the perforation processing device 40 and members provided around the perforation processing device 40.
As shown in FIG. 2, a holding plate 32 that holds the punching processing device 40 is fixed to the housing member 31 that forms the housing of the paper processing unit 3. The holding plate 32 is provided with a rail member (not shown) extending in the width direction (a direction orthogonal to the paper transport direction). And the punching processing apparatus 40 is suspended by the rail member provided in the holding | maintenance board 32, and is hold | maintained so that a movement in the width direction is possible. The moving means that allows the punching processing device 40 to move in the width direction is not limited to the rail member. For example, a roller is provided on the lower surface side of the punching processing device 40 and the lower conveying path 34 described below is provided. It may be configured to move.

  As shown in FIG. 2, a lower conveyance path 34 is provided below the punching processing device 40. Specifically, the lower conveyance path 34 is provided to face a lower plate 41 c (described later) of the housing 41 in the punching processing device 40. Then, the paper conveyed to the punching processing device 40 is introduced into a gap (hereinafter referred to as a paper introduction port 35) between the lower transport path 34 and the lower plate 41c and punched. Further, a through-hole serving as a receiving blade (die) for a drilling blade 44 described later is formed in the lower conveyance path 34.

  A main body drive motor M1 as an example of a first drive unit is attached to the holding plate 32 fixed to the housing member 31. For example, a DC motor or a pulse motor can be used as the main body driving motor M1 of the present embodiment. And the gear 51 of the main body drive motor M1 and the rack gear 41R attached to the perforation processing device 40 are connected (see FIG. 5 described later). In the present embodiment, it is possible to move the entire perforation processing apparatus 40 in the width direction using the main body drive motor M1.

  By the way, the position of the sheet conveyed to the punching device 40 is not always constant. On the other hand, the positions of the perforations formed on the paper are determined in advance. Therefore, in the present embodiment, the position in the width direction of the sheet conveyed to the punching processing device 40 is detected using the sheet position detection sensor 36 described above. Then, based on the position of the perforation to be formed on the predetermined paper and the position of the paper obtained by the paper position detection sensor 36, the entire perforation processing device 40 is moved, thereby aligning the two. It is configured to do.

  Further, as shown in FIG. 2, a piercing blade drive motor M <b> 2 that is a power source of the piercing operation by the piercing processing device 40 is attached to the housing member 31. For example, a DC motor or a pulse motor can be used as the drilling blade drive motor M2 of the present embodiment. As shown in FIG. 2, in this embodiment, the perforation processing device 40 and the perforation blade drive motor M2 are configured separately. Therefore, as described above, even when the drilling processing device 40 is moved using the main body drive motor M1, the drilling blade drive motor M2 does not move and is held by the housing member 31.

  Thus, in the present embodiment, the drilling blade drive motor M2 as an example of the second drive unit and the drive unit is configured separately from the drilling processing device 40, thereby reducing the weight of the drilling processing device 40. The operation sound and vibration caused by the movement of the perforation processing device 40 are suppressed, and further, the power required for the movement of the perforation processing device 40 is reduced.

Next, the overall configuration of the punching processing device 40 will be described in detail.
A punching processing device 40 as an example of a recording material processing device and a punching processing unit includes a punching blade 44, a rectilinear cam 45 that moves forward and backward with respect to the paper by guiding the punching blade 44, and a housing 41 that holds these members. And.
The perforating blade 44 is a rod-shaped member having a blade provided on the tip side. The perforating blade 44 advances and retreats with respect to the paper on which an image is formed and conveyed to the paper introduction port 35, thereby forming a hole in the paper with the blade provided at the tip. As shown in FIG. 2, the punching processing apparatus 40 of the present embodiment is provided with two punching blades 44 and is arranged at a predetermined distance in the width direction. Note that the number of perforation blades 44 provided in the perforation processing apparatus 40 may be determined according to the number of perforations to be formed on the paper, and may be one, three, or more, for example.

  A housing 41 as an example of a housing includes an upper plate 41a, a lower plate 41c facing the upper plate 41a, and a side plate 41b provided between the upper plate 41a and the lower plate 41c to fix them. The outer shape has a U-shape. The housing 41 holds the drilling blade 44 by the upper plate 41a and the lower plate 41c. Specifically, openings having the same diameter as the drilling blades 44 are formed in the upper plate 41a and the lower plate 41c, respectively. The perforating blade 44 is held by the housing 41 through an opening formed in the upper plate 41a and an opening formed in the lower plate 41c. Since the punching blade 44 is held as described above, the punching blade 44 is slidable in the advancing / retreating direction with respect to the paper set in the paper introduction port 35.

The rectilinear cam 45 as an example of the operation conversion unit is provided inside the housing 41 as shown in FIG. A rack gear 45R is provided at the end of the rectilinear cam 45. The rectilinear cam 45 is configured to move in the width direction by receiving a driving force from the drilling blade driving motor M2 via the rack gear 45R.
As shown in FIG. 2, the drilling blade drive motor M <b> 2 and the straight cam 45 are connected via a clutch 53. The clutch 53 is held by the housing member 31 as shown in FIG. The clutch 53 to which this embodiment is applied will be described in detail later.

FIG. 3 is an overall view of a rectilinear cam 45 to which the present embodiment is applied.
The rectilinear cam 45 is provided with a guide portion 45a. The guide portion 45 a is a groove formed in a base material that constitutes the rectilinear cam 45. Further, as shown in FIG. 3A, the grooves constituting the guide portion 45a are bent so as to protrude toward the side on which the paper is placed. Then, the protrusion 441 provided on the perforating blade 44 is fitted into the groove of the guide portion 45 a of the rectilinear cam 45.
As shown in FIG. 3B, when the rectilinear cam 45 is moved in the direction of arrow A, for example, the piercing blade 44 is guided by the guide portion 45a, and the piercing blade 44 moves (lowers) in the direction of arrow B. At this time, as shown in FIG. 3B, when the paper is placed under the perforating blade 44, the blade provided at the tip of the perforating blade 44 penetrates the paper so that the paper is perforated. It is formed.
When the rectilinear cam 45 is further moved in the arrow A direction from the state shown in FIG. 3B, the drilling blade 44 is moved (raised) in the direction opposite to the arrow B direction.

  Note that the perforating blade 44 may be retracted from the paper by reversing the moving direction of the rectilinear cam 45 after the perforating blade 44 penetrates the paper. In other words, the perforating blade 44 may be moved back and forth with respect to the sheet by a reciprocating operation in the width direction of the rectilinear cam 45. When the linear cam 45 is operated in this way, the guide portion 45a may be half of the symmetrical guide portion 45a shown in FIG.

  As described above, the perforating blade 44 is guided by the guide portion 45a of the rectilinear cam 45 by a series of operations of linearly moving the rectilinear cam 45, and the advancing and retreating operation of the perforating blade 44 with respect to the paper introduction port 35 is realized. The When there is a sheet in the sheet introduction port 35, the advance / retreat operation forms a hole in the sheet.

FIG. 4 is a view for explaining the connection between the drilling blade drive motor M2 and the rectilinear cam 45. FIG.
In the present embodiment, as shown in FIG. 4, a clutch 53 is interposed between the drilling blade drive motor M <b> 2 and the rectilinear cam 45. Then, power is transmitted from the drilling blade drive motor M <b> 2 to the rectilinear cam 45 via the clutch 53. Although various types can be used for the clutch 53 as an example of a connection part, in this embodiment, an electromagnetic clutch is used. For example, an electromagnetic clutch has an input shaft, an output shaft, and an electromagnet that connects and disconnects (connects / disconnects) depending on whether or not power is supplied. And the gear 52 (refer FIG. 5) of the piercing blade drive motor M2 is connected to the input gear 53i linked with the input shaft of the clutch 53. On the other hand, the rack gear 45R of the rectilinear cam 45 is connected to the output gear 53o connected to the output shaft of the clutch 53. The clutch 53 makes the input gear 53i and the output gear 53o idle by making the input shaft and the output shaft non-contact, or conversely, by connecting the input shaft and the output shaft, The gear 53i and the output gear 53o are synchronized, and the power of the drilling blade drive motor M2 is transmitted to the rectilinear cam 45.

FIG. 5 is a diagram for explaining a punching operation by the punching processing device 40.
FIG. 5A shows a standby state before punching a sheet. FIG. 5B shows a state in which the entire punching processing apparatus 40 is moved for alignment with the conveyed paper. FIG. 5C shows a state where the paper is perforated.

In the state before punching the paper, the punching processing device 40 is prepared for the paper to be conveyed by retracting the punching blade 44 from the paper inlet 35 by the straight cam 45 as shown in FIG. Then, the paper inlet 35 is opened.
Then, the sheet on which the image is formed is conveyed to the punching processing device 40, the trailing end of the sheet is introduced into the sheet introducing port 35, and then the conveyance of the sheet is stopped. Next, the paper position detection sensor 36 detects the position of the paper in the width direction. If it is necessary to adjust the position of the punching blade 44 with respect to the paper based on the detection result, the main body driving motor M1 is driven to move the main body of the punching processing device 40 in the width direction. Perform alignment. Further, in the present embodiment, when the punching processing device 40 is moved, the input shaft and the output shaft in the clutch 53 are disconnected.

Here, consider a case where the gear 52 of the drilling blade drive motor M2 and the rack gear 45R of the straight cam 45 are directly connected.
In such a configuration, when the drilling processing device 40 is moved in a state where the rotation of the drilling blade drive motor M2 is stopped, the gear 52 of the drilling blade drive motor M2 becomes resistance for the rectilinear cam 45 (rack gear 45R). Become. That is, the entire punching processing apparatus 40 is moved in a state where the rack gear 45R of the straight cam 45 is hooked on the gear 52 of the punching blade drive motor M2. As a result, the relative positions of the drilling blade 44 held by the housing 41 and the rectilinear cam 45 change. As a result, the punching blade 44 is guided to the rectilinear cam 45, and the punching blade 44 moves toward the paper introduction port 35. At this time, if there is a sheet in the sheet introduction port 35, there is a possibility that a hole is formed in the sheet.

  For example, in the case where the drilling blade 44 is operated using the rectilinear cam 45, the moving direction of the drilling processing device 40 for alignment and the moving direction of the rectilinear cam 45 for performing the drilling operation of the drilling blade 44 are used. The above-mentioned phenomenon occurs. In addition, the above phenomenon is particularly likely to occur when a motor having a large resistance force is employed when trying to rotate the motor shaft from the outside, such as a DC motor or a pulse motor.

  On the other hand, in the present embodiment, the drilling blade drive motor M2 and the rectilinear cam 45 are connected via the clutch 53. When moving the punching processing device 40, the input shaft and the output shaft of the clutch 53 are disconnected and the input gear 53i and the output gear 53o are idled. Then, when the punching processing device 40 is moved, the resistance received by the rack gear 45R of the rectilinear cam 45 becomes extremely small. With this configuration, in the present embodiment, the perforation processing device 40 is moved while maintaining the relative positional relationship of the rectilinear cam 45, the housing 41, and the perforation blade 44, and a perforation operation occurs at an unintended timing. Is suppressed.

  When the alignment of the sheet and the punching blade 44 in the width direction is completed, the input shaft and the output shaft of the clutch 53 are connected and the punching blade drive motor M2 is driven. Then, as shown in FIG. 5C, by moving the rectilinear cam 45, the perforating blade 44 is guided by the guide portion 45a of the rectilinear cam 45, and the perforating blade 44 is moved back and forth with respect to the paper so that a hole is formed in the paper. Form.

Next, an example in which the straight cam 45 is further stabilized when the punching processing device 40 is moved will be described.
FIG. 6 is a view for explaining the pressing member 42 and the pressed portion 45b.
As shown in FIG. 6A, a pressing member 42 is attached to the upper plate 41 a of the housing 41 so as to face the linear cam 45 and press the linear cam 45. As the pressing member 42, for example, a leaf spring or the like can be used. On the other hand, the straight cam 45 is formed with a pressed portion 45b having a shape in which the pressing member 42 is easily caught. The pressed portion 45b can be formed by providing a concave shape in a part of the rectilinear cam 45, for example.

The force for pressing the rectilinear cam 45 by the pressing member 42 is such that the rectilinear cam 45 does not move when moving in the width direction of the perforation processing device 40, and the rectilinear cam 45 using the drilling blade drive motor M <b> 2. Is moved to such an extent that the catch between the pressing member 42 and the pressed portion 45b can be released (see FIG. 6B).
As described above, by providing the pressing member 42, the relative positional relationship among the rectilinear cam 45, the housing 41, and the drilling blade 44 when the drilling processing device 40 is moved is further stabilized.

<Embodiment 2>
FIG. 7 is a diagram for explaining the overall configuration of a perforation processing apparatus 80 to which the second exemplary embodiment is applied. In the following description, the same components as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 7, also in the second embodiment, the drilling blade drive motor M <b> 2 serving as a power source for the drilling operation is configured separately from the drilling processing device 80. By doing so, for example, the operation sound and vibration generated when the perforation processing device 80 is moved for alignment are suppressed, and the electric power required for the movement is further reduced.

As shown in FIG. 7, the piercing processing device 80 includes a piercing blade 44, a rotating cam 81 that drives the piercing blade 44, and a compression spring 82 that presses the upper end portion of the piercing blade 44 toward the rotating cam 81.
The rotating cam 81 is attached to a common camshaft 83 as shown in FIG. The camshaft 83 is rotatably supported by a bearing member (not shown) provided in the housing 41. The rotating cam 81 has an egg-shaped cross section having a portion having a long distance from the camshaft 83 to the circumference and a short portion. And it arrange | positions in contact with the edge part (opposite side of a blade) of the perforation blade 44. FIG. In the second embodiment, the rotating cam 81 and the cam shaft 83 function as an operation conversion unit.

A shaft gear 84 is attached to the end of the camshaft 83. The shaft gear 84 as an example of the connecting portion is a spur gear in which teeth are formed along the axial direction (width direction) of the rotating shaft. Further, the tooth length (tooth width) of the shaft gear 84 is set to be equal to or greater than the movable distance in the width direction of the perforation processing device 80.
The shaft gear 84 is connected to an idle gear 85 that is connected to the gear 52 of the drilling blade drive motor M2. The idle gear 85 is also rotatably supported by the housing member 31. Further, the idle gear 85 is a spur gear in which teeth are formed so as to be parallel to the rotation axis, like the shaft gear 84.

  Also in the punching processing device 80, the paper and the punching blade 44 are aligned by moving the main body of the punching processing device 80 in the width direction according to the position of the conveyed paper. Note that the main body drive motor M1 is used to move the punching processing device 80 in the width direction.

  When forming a hole in the sheet by the punching processing device 80, the punching blade drive motor M2 is driven and the camshaft 83 is rotated via the shaft gear 84. Then, the rotating cam 81 provided on the cam shaft 83 rotates. At this time, when a portion having a long distance from the rotating shaft to the circumference of the rotating cam 81 comes into contact with the punching blade 44, the punching blade 44 is pushed down and moves toward the paper inlet 35. When a portion of the rotary cam 81 whose distance from the rotation axis to the circumference is short contacts the punching blade 44, the punching blade 44 is pushed back by the compression spring 82, and the punching blade 44 is retracted from the paper introduction port 35. As described above, the punching device 80 punches the paper by moving the punching blade 44 forward and backward with respect to the paper.

The perforation processing device 80 configured as described above performs perforation for alignment even when the perforation processing device 80 is moved in the width direction for alignment between the paper and the perforation blade 44. Since the moving direction of the processing device 80 is different from the moving direction (rotating direction) of the cam shaft 83 (rotating cam 81) for performing the drilling operation of the drilling blade 44, the drilling blade 44 is drilled by the movement of the drilling processing device 80. Does not cause any action.
Further, as described above, in the present embodiment, the tooth length (tooth width) of the shaft gear 84 is set to be equal to or greater than the distance that can be moved when the perforation processing device 80 moves. By doing so, even when the drilling processing device 80 is moved in the width direction, the transmission of the driving force from the drilling blade drive motor M2 to the shaft gear 84 without the shaft gear 84 and the idle gear 85 being disengaged. Is maintained.

<Embodiment 3>
FIG. 8 is a diagram for explaining the overall configuration of a punching processing apparatus 90 to which the third embodiment is applied. In the following description, the same components as those described in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 8, also in the third embodiment, the drilling blade drive motor M <b> 2 serving as a power source for the drilling operation is configured separately from the drilling processing device 90. By doing so, for example, the operation sound and vibration generated when the perforation processing device 90 is moved for alignment are suppressed, and the electric power required for the movement is further reduced.

  As shown in FIG. 8, the perforating apparatus 90 includes a bladed roll 91 provided with a blade 92 (perforated blade) on the outer periphery, and a shaft 93 to which the bladed roll 91 is attached. The shaft 93 is rotatably supported by a bearing member (not shown) provided in the housing 41. A shaft gear 94 is attached to the end of the shaft 93. In the third embodiment, the bladed roll 91 and the shaft 93 function as an operation conversion unit.

A shaft gear 94 is attached to the end of the shaft 93. The shaft gear 94 as an example of the connecting portion is a spur gear provided with teeth so as to be parallel to the rotation axis. Further, the tooth length (tooth width) of the shaft gear 94 is set to be equal to or greater than the movable distance in the width direction of the perforation processing device 90.
The shaft gear 94 is connected to an idle gear 95 that is connected to the gear 52 of the drilling blade drive motor M2. The idle gear 95 is also rotatably supported by the housing member 31. Further, the idle gear 95 is a spur gear provided with teeth so as to be parallel to the rotation axis, like the shaft gear 94.

  When the hole is formed in the paper by the punching processing device 90, the punching blade drive motor M2 is driven and the shaft 93 is rotated via the shaft gear 94. Then, the bladed roll 91 provided on the shaft 93 rotates. When there is a sheet in the sheet introduction port 35 and the blade 92 of the bladed roll 91 and the sheet face each other, the blade 92 comes into contact with the sheet to form a hole in the sheet. Then, by further rotating the bladed roll 91, the blade 92 of the bladed roll 91 is separated from the paper. As described above, the punching apparatus 90 punches the paper by moving the blade 92 of the bladed roll 91 forward and backward with respect to the paper.

The punching processing device 90 configured as described above is used for positioning even when the punching processing device 90 is moved in the width direction for positioning the paper and the bladed roll 91. Since the moving direction of the punching processing device 90 is different from the moving direction (rotation direction) of the shaft 93 (roller 91) for performing the punching operation, the punching operation is not caused by the movement of the punching processing device 90.
In addition, as described above, in the present embodiment, the tooth length (tooth width) of the shaft gear 94 is set to be equal to or greater than the movable distance of the drilling device 90. By doing so, even when the drilling processing device 90 is moved in the width direction, the transmission of the driving force from the drilling blade drive motor M2 to the shaft gear 94 without the shaft gear 94 and the idle gear 95 being disengaged. Is maintained.

  As described with reference to FIG. 6, the rotary cam 81 in the second embodiment or the bladed roll 91 in the third embodiment is pressed down in order to further suppress the drilling operation when the punching processing apparatus is moved. A member may be provided. Specifically, a member made of, for example, a leaf spring is attached to the housing 41. Then, using this member, when the punching processing apparatus moves, the rotary cam 81 or the bladed roll 91 may be pressed so as not to cause a punching operation.

DESCRIPTION OF SYMBOLS 1 ... Image forming apparatus, 2 ... Image forming part, 3 ... Paper processing part, 40 ... Perforation processing apparatus, 44 ... Perforation blade, M1 ... Main body drive motor, M2 ... Perforation blade drive motor

Claims (2)

An image forming unit for forming an image on a recording material;
A punching blade that forms a hole in the recording material by moving forward and backward with respect to the recording material on which an image is formed by the image forming unit; and an operation conversion unit that converts the power received from the driving source into the forward and backward movement of the punching blade. A perforation processing unit provided so as to be movable in a moving direction that intersects the conveying direction of the recording material;
And a pre-Symbol punching unit is moved in the moving direction, a first driving unit for performing positioning between the recording material and the cutting head,
A second drive unit that is held separately from the perforation processing unit and that drives the operation conversion unit by applying power to the operation conversion unit in order to advance and retract the perforation blade with respect to the recording material; ,
A connecting portion interposed between the second driving unit and the operation converting unit;
Equipped with a,
The motion converting unit moves the drilling blade forward and backward with respect to the recording material by an operation of moving along the moving direction of the punching processing unit,
The connecting unit does not transmit the power of the second driving unit to the operation converting unit when the drilling processing unit is moved by the first driving unit, and the second driving unit is used when performing the drilling operation. The image forming apparatus is characterized in that the power of the motor is transmitted to the operation conversion unit . A housing that is driven from the outside and is movable in one direction;
A perforation blade that is held in the housing and advances and retreats with respect to the recording material to form a perforation in the recording material;
Operation conversion for moving the drilling blade forward and backward with respect to the recording material by being moved in the one direction by receiving power from a drive unit that is held in the casing and held separately from the casing. and parts,
It is interposed between the motion conversion unit and the drive unit, and does not cause the drilling blade to move forward and backward when the casing moves in the one direction, and when punching the recording material A connecting part for transmitting power by the driving part;
A recording material processing apparatus comprising:

Images