JPH0790516B2 - Equipment with perforation mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is used for an image forming apparatus such as a photographic machine, and is for punching holes for automatically forming binding punch holes in conveyed sheets. The present invention relates to a device having a mechanism.

[Prior Art] Conventionally, after the electrostatic latent image formed on the surface of the photoreceptor is visualized, it is transferred to a sheet for image processing, and the image-processed sheet is fixed by heating etc. After the toner image is fixed on the surface, punching holes for binding are automatically formed on this paper. For example, as shown in FIG. 4, a paper carrying unit for discharging the paper after fixing processing to the outside of the apparatus. Various devices have been proposed in which a punching portion 94 having a punch blade 92 and a punch die 93 is arranged on the top of the 91 (for example, in Japanese Utility Model Publication 62-
92260, JP-A-63-121862, etc.).

In the punching portion 94 of the figure, when the cam 97 arranged above the punch blade 92 is rotated about the rotation shaft 97a, the punch blade 92 is pushed out in the direction of the punch die 93 as shown by the arrow in the figure. As a result, punch holes are formed in the paper. After the punch holes are formed, the punch blade 92 is pushed back by the restoring spring 98 and returns to the position shown in the figure. Further, the scraps punched by the punch blade 92 pass through the opening formed in the punch die 93 and fall down, and the recovery box disposed below the punch die 93.
It is designed to be stored inside from 96 collection ports.

By the way, when the scraps are fully stored in the collection box 96, they must be discarded. As one method for that, for example, so that this recovery box 96 can be pulled out from the outside of the device main body 90,
There is a drawer type (see Japanese Patent Laid-Open No. 63-121862).

[Problems to be Solved by the Invention] However, since this drawer type collection box has a drawer mechanism, a certain large depth is required for a smooth withdrawal operation. That is, an extra large depth that exceeds the size required to store scraps is required. Therefore, there is a problem that a wasteful space is required.

Therefore, in order to easily perform this scrap processing, the perforated portion 84, the discharging means 95, and the recovery box 96 are rotated integrally or only the recovery box 96 is rotated around the lower portion thereof. It is also conceivable that the device main body 90 is taken out to the outside.

However, the collection box that was rotated and taken out
Since it is in a state of being laid sideways, there is a problem that the recovery port is laid sideways and the scraps that have been clogged up overflow to the outside. In addition, since a casing (not shown) that holds the recovery box exists around the recovery box, there is a problem that it is difficult for an operator to take out the recovery box.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems of the conventional device, and an object of the present invention is to provide a device that can easily take out the recovery box without the scraps in the recovery box overflowing to the outside.

[Means for Solving the Problem] The present invention accommodates and holds a recovery box that receives scraps of paper generated at the time of forming punch holes of paper from a recovery port formed in an upper portion and stores the recovery box inside. A frame-shaped or cylindrical holding unit having an elastic supporting member on the sheet discharge side and rotatably attached to the apparatus main body is provided, and the holding unit rotates relative to the apparatus main body. When the elastic support member is pulled apart, the elastic force of the elastic support member causes the recovery port side of the recovery box to float more than the bottom side of the recovery box, and when the holding means is incorporated into the apparatus main body. The pressing member fixed to a part of the apparatus main body pushes the recovery box and resists the elastic force of the elastic support member to set the recovery port at the punch blade. Is characterized by apparatus.

[Operation] The present invention stores and holds a collection box, and has a frame-like or box-like shape that has an elastic support extractant at least on the paper discharge side and is rotatably attached to the apparatus main body. When the holding means in the shape of a ring is rotated and separated from the main body of the apparatus, the elastic support member causes the elastic force of the elastic support member to cause the recovery port side of the recovery box to float above the bottom side thereof. Therefore, there is no fear that the scraps will overflow from the recovery port, and the operator can easily take out the recovery box without being obstructed by the surrounding holding means. Also,
When the holding means is incorporated into the device body, a pressing member fixed to a part of the device body pushes the recovery box, resists the elastic force of the elastic support member, and Set the recovery port where the punch blade is. Therefore, the scraps produced by the punch blades are stored inside through the recovery port.

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

FIG. 1 is a schematic cross-sectional view of an embodiment of an apparatus provided with a punching mechanism according to the present invention, which is a view centering on a fixing device of a copying machine and its paper discharge side.

In the figure, a fixing discharge roller 51 is arranged at the exit of the fixing device 8, and a fixing completion detecting switch 52 is provided on the downstream side with respect to the sheet conveying direction. When the leading edge of the paper is ejected from the fixing ejection roller 51, the detection switch 52 falls from the solid line state to the state shown by the alternate long and short dash line to turn on, and the rear edge of the paper passes over the detection switch 52. It is a switch that returns to the solid line state and turns off at the moment it finishes. Therefore, by detecting the switching timing of the fixing switch 52 from ON to OFF,
The timing of passage of the trailing edge of the paper can be detected.

The paper discharged from the fixing discharge roller 41 is conveyed by the conveyance roller 53.
It is transported further in. On the downstream side of the transport roller 53, a switching claw 23 is provided close to the transport roller 53.
The switching claw 23 guides the paper to the discharge roller 48 side in the state indicated by the alternate long and short dash line, and guides the paper to the re-feed path 11 side in the solid line state.

The additional data recording mechanism 9 and the punching mechanism are provided on the path through which the sheet guided by the switching claw 23 to the discharge roller 48 passes.
10 are provided in sequence. This additional data recording mechanism 9
Is a mechanism for printing predetermined additional information at a predetermined position on the paper on which the image is fixed by the fixing device 8. The platen roller 55 and the thermal head capable of moving up and down are arranged on the paper conveyance system path. 34 are included.

Further, a punching mechanism 10 is arranged on the downstream side of the additional data recording mechanism 9. This punching mechanism 10 includes a holder 71.
A pair of punch blades 72, 72 (a pair of left and right in the transport direction) held by the punch blades 72, and the punch blades 72,
Coil springs 73, 73 for holding 72 in a raised position, and a punch die 74 having a hole 74a into which the upper punch blades 72, 72 are inserted,
The punch blades 72, 72 are provided with cams 75, 75 provided above the punch blades 72, 72 in order to push down the punch blades 72, 72 to form punch holes in the sheet. Further, below the punch die 74, a frame-shaped or box-shaped holding means 12 is arranged. The holding means 12 is for holding the recovery box 8 which receives the scraps of the paper generated at the time of forming the punch holes of the paper from the recovery port 81a formed in the upper part and stores the recovery box 8 therein, and ejects the paper. Elastic support member 1 such as a leaf spring 1a provided on the side, a bottom wall 121 that supports the recovery box 8 from below, a side wall 2 arranged on the image forming side, and left and right side plates (referenced to the sheet conveyance direction) 122. Is equipped with. The side wall 2 also serves as a guide plate for the re-feeding path 11. The leaf spring 1a has a curved portion in the upper part, is fixed to the bottom wall 121 below the recovery box 8, and always urges the center of the recovery box 8 or the upper part thereof toward the image forming side. A discharge roller 48 that discharges a sheet is arranged on the downstream side of the punching mechanism 10. A pressing member 5 for pressing the collection box 8 toward the discharge side is attached to a position below the additional data recording mechanism 9 and at a position where the collection box 8 can come into contact with the collection box 8. For example, it is a metal plate having a sponge attached to the surface thereof so as not to damage the surface of the collection box 8.

The punching mechanism 10 (excluding the cam 75), the collection box 8, the discharge roller 48, and the feeding roller 6 of the re-feeding path 11 are rotated about the rotation shaft 3 so that the copying machine. Body 10
It is configured as a unit U so that it can be integrally pulled out from 0.

Next, the operation of the above embodiment of the present invention will be described.

As an example, a case will be described in which the sheet is discharged as it is without using the re-feeding path 11, the additional data is not added, and a punching hole for binding is formed at the rear end of the sheet.

The switching claw 23 is switched to the paper ejection side in advance (the position indicated by the chain double-dashed line).

The paper on which image processing and fixing have been completed is discharged from the fixing discharge roller 51 of the fixing device 8, further conveyed to the downstream by the conveying roller 53, passes over the platen roller 55 in the additional data recording mechanism 9, and is further conveyed. It is discharged to the outside by the discharge roller 48. During such conveyance, the fixing switch 52 detects the trailing edge of the sheet as described above, and after a lapse of a predetermined time, the discharge roller 48 stops. Then, the rotary shaft 75a of the cam 75 is rotated to push the punch blade 75 downward against the spring 73. As a result, the punch blade 75 punches a hole in the sheet under the punch blade 75, while the punch blade 74 punches the hole 74a.
Inserted in. As a result, holes are made in the paper, but the scraps fall directly underneath and the collection box 8
It collects from the recovery port 81a inside. The sheet having the punched holes at the rear end is discharged to an external discharge tray (not shown) by rotating the discharge roller 48 again.

As the punch holes are formed in each sheet in this manner, the scraps are stored inside the collection box 8 and eventually fill up. Therefore, using the handle portion 13 of the unit U, the unit U is rotated toward the discharge side with the shaft 3 as a fulcrum and pulled out until it becomes substantially horizontal. FIG. 2 is a schematic sectional view showing a state where the unit U is pulled out, and FIG. 3 is a perspective view thereof. The chain 14 supports the unit U so that the unit U does not drop further downward, as shown in FIG.

When the unit U is pulled out in this way, the recovery box 8 is naturally separated from the pressing member 5 attached to the additional data recording mechanism 9. As a result, the recovery box 8 has its recovery port side lifted up from its bottom side, as shown in the figure, due to the elastic force of the leaf spring 1a. Therefore, when the unit U is rotated and pulled out to the outside, the scraps accumulated inside are collected in the recovery port 81.
Never spill from a. Further, since the upper part of the recovery box 8 is partially projected upward from the holding means 12, it is easy for an operator to grab the recovery box 8 from the holding means 12. The holding means 12 is such that the recovery box 8 is a leaf spring.
By 1a, an appropriate extra space is formed inside so that it can be lifted up, and a part of the collection box 8 can be projected upward so that the image forming side (when the unit U is open, The upper side) has an opening or a slit S. Further, the pressing member 5 can be brought into contact with the side wall of the collection box 8 through the opening or the slit S.

The holding means 12 in the present invention does not need to be unitized together with the punch blade 72 and the like located above it so as to be rotatable as in the above-described embodiment, and the punch die 74 and the elastic support member 1 are not necessary. The bottom wall 121, the side wall 2, the side plate 122 and the like may be independently rotated and pulled out.

Further, the elastic support member 1 is not limited to the leaf spring 1a, and may be any elastic body such as another type of spring.

Further, the pressing member 5 does not need to be fixed to the additional data recording mechanism 9 as in the above embodiment, but is directly attached to the inner wall of the image forming apparatus main body 100, and the recovery box 85 is incorporated in the image forming apparatus main body 100. When the recovery box 8 is pushed, the recovery box 8 is pressed against the urging force of the elastic support member 1 so that the recovery port 81a of the recovery box 8 can be aligned with the punch die hole 74a. May be. Further, the material is not limited to a metal plate, and may be an appropriate material such as a plastic rod.

The present invention can be applied to other image forming apparatuses such as printers as well as copying machines.

[Effects of the Invention] As described above, the apparatus according to the present invention accommodates and holds a recovery box that internally stores paper scraps generated when forming punch holes in the paper, and elastically supports at least the discharge side. A holding member that has a member and is rotatably attached to the main body of the image forming apparatus; and when the holding means rotates and is separated from the main body of the apparatus, the elastic support member The elastic force causes the recovery port side of the recovery box to float more than the bottom side, and when the holding means is incorporated into the device body, it is fixed to a part of the device body. Since the pressing member pushes the recovery box and resists the elastic force of the elastic support member to set the recovery port at the position where the punch blade is present, the recovery box is rotated. Even if you pull it out from the collection port It has advantages that there is no concern that the scraps will be spilled, and that the operator can easily grasp and take out the recovery port side.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of an image forming apparatus according to the present invention, FIG. 2 is a schematic sectional view for explaining the operation of the embodiment, and FIG. FIG. 4 is a perspective view for explaining the operation of the example, and FIG. 4 is a schematic sectional view showing a conventional punching mechanism. 1 ... Elastic support member, 2 ... Side wall, 5 ... Pressing member, 8
…… Collection box, 81a …… Collection port, 72 …… Punch blade, 74 ……
Punch die, 121 ... bottom wall, U ... unit.

Claims (2)

[Claims] 1. A device provided with a punching mechanism having a punch blade for forming a punch hole in an image-formed sheet, wherein scraps of the sheet generated when the punch hole of the sheet is formed are collected from a recovery port formed in the upper part. A collection box that receives and stores inside is stored and held, and has an elastic support member at least on the paper discharge side, and is rotatably attached to the apparatus main body.
A frame-shaped or box-shaped holding means is provided, and when the holding means is rotated and separated from the apparatus main body,
Due to the elastic force of the elastic support member, the recovery port side of the recovery box is floated more than the bottom side thereof,
When the holding means is incorporated into the device body, a pressing member fixed to a part of the device body pushes the recovery box, resists the elastic force of the elastic support member, and An apparatus equipped with a punching mechanism, characterized in that a recovery port is set at a position where the punch blade is present. 2. An image forming apparatus equipped with a punching mechanism having a punch blade for forming punch holes in a sheet after image formation, wherein scraps of the sheet generated at the time of forming the punch holes in the sheet are collected on the upper portion. A collection box for receiving and storing the collection box which is received from the mouth and stored therein, has a resilient support member at least on the paper discharge side, and is rotatably attached to the main body of the image forming apparatus. A holding means is provided, and when the holding means is rotated and pulled away from the image forming apparatus main body, the elastic support member uses the elastic force to move the recovery port side of the recovery box toward the bottom side thereof. When the holding means is incorporated into the main body of the image forming apparatus, a pressing member fixed to a part of the main body of the image forming apparatus pushes the recovery box to cause the elastic force. Support section Against the elastic force, the image forming apparatus, characterized in that it is the recovery port as set where there is the punch blade.