JP2004202628A - Cutter apparatus for sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutter apparatus for a sheet, which cuts down a product free from damages such as wrinkles by cutting off the sheet and further performs the cutting-off operation without causing jam of the cut-down chips of the sheet. <P>SOLUTION: When the sheet 66 is cut off by operating a rotary blade head 154, which has a rotary blade 156 corresponding to a fixed blade portion 150, so as to move in the state where the sheet 66 is put along the fixed blade portion 150, a cut-off side portion 62 in the sheet 66 just after cutting-off by the rotary blade 156 can pass through the path of the rotary blade head 154 keeping the flat plane state of the sheet 66 before cutting-off. When cut-off chips in the sheet just after cutting-off by the rotary blade 156 have been thrown in the direction different from the plane of the sheet 66 before cutting-off because of the shearing force existing between the fixed blade portion 150 and the rotary blade 156, the chips come into sliding contact with a Russell type guiding surface 166A and are guided in the direction different from the fixed blade portion 150 side. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet cutter apparatus that is mounted on an image forming apparatus that outputs a photographic print and is suitable for use in a cutting process such as cutting out a photographic print by trimming a sheet to a predetermined size.
[0002]
[Prior art]
In general, an image forming apparatus of a laser exposure heat development transfer system (silver salt photographic system) is used. In such an image forming apparatus, an image receiving paper (which may be an OHP film or the like) cut to a predetermined size for forming a single image along a conveyance path and a donor piece that is a photosensitive material are provided. While being conveyed, an output print is obtained by performing an exposure process and a heat development transfer process.
[0003]
In such an image forming apparatus, a so-called A3W, A3, A4, A4W, a 4-cut size, a 6-cut size, a 2L size, a postcard size, an L size, or a digital still camera, which is used for normal photographic printing. There is a strong demand to be able to output photographic prints of various sizes ranging from a relatively large size to a relatively small size, such as a DSC size corresponding to the aspect ratio of image data.
[0004]
Therefore, in such an image forming apparatus, an image receiving paper roll for supplying each predetermined size (which may be an OHP film) image receiving paper and a donor piece as a photosensitive material to the inside of the apparatus main body. An image receiving paper magazine storing an OHP film roll or the like and a donor magazine storing a donor roll are detachably set and used.
[0005]
The image forming apparatus performs image forming processing by a laser exposure thermal development transfer method using image receiving paper cut to a predetermined size corresponding to the size of an image to be formed and a donor piece that is a photosensitive material. The apparatus is configured to output a photographic print on which an image is formed.
[0006]
Further, in this image forming apparatus, when outputting, for example, a photographic print on which an L size image having a small size equal to or smaller than a predetermined size is output, a predetermined large image receiving sheet of a leaf and a donor piece as a photosensitive material are used. When a plurality of images are formed on the sheet and a predetermined large image-receiving sheet on which the plurality of images are formed is output, the sheet cutting processing device provided in the image forming apparatus is used to There is an urgent need to develop an apparatus that can improve the operation efficiency by outputting an image formed on an image receiving paper that has been cut into a small size by dividing a predetermined large size image receiving paper into a plurality of sizes.
[0007]
In such an image forming apparatus, a single large predetermined image receiving paper on which a plurality of images are formed is output. On this one-leaf image paper of a predetermined large size, a portion where the first image is formed is set after the header portion, and then a cutting margin portion is set between the images, and the second image is displayed. A predetermined format is set in which a plurality of predetermined images and cut margins are set, and a footer portion is finally set in such a manner that the formed portion is set.
[0008]
Therefore, in such an image forming apparatus, when outputting a predetermined large image receiving sheet of a single sheet on which a plurality of images are formed, the image receiving sheet is set to be discharged obliquely upward from the output port of the image forming apparatus. A sheet cutting processing device arranged continuously in the conveyance path performs cutting processing on a single large-sized image receiving paper to create a plurality of printed products having a predetermined shape on which images are formed. Unnecessary header portions, footer portions and so-called cutting margin portions between the images generated by the cutting operation are cut off and discarded as sheet waste.
[0009]
In such a sheet cutting processing apparatus equipped in the image forming apparatus, the image receiving paper conveyed on the conveyance path which faces obliquely upward is cut by the sheet cutter apparatus.
[0010]
The sheet cutter device that cuts the image receiving paper in a state of being directed obliquely upward is, for example, slidably contacted while rotating the rotating blade along a fixed blade arranged in a direction intersecting the image receiving paper conveying direction. The image receiving paper is cut in the width direction along the blade.
[0011]
In the sheet cutter device that cuts the image receiving paper in a state of facing obliquely upward, so-called cutting margin sheet waste between the images generated by the cutting process is in a narrow band shape (long plate shape). For this reason, when the rotary blade is cutting the narrow band-shaped cutting margin portion while moving in the cutting direction along the fixed blade, it is easy to enter the fixed blade from the tip of the cutting margin portion.
[0012]
In this sheet cutter device, when sheet waste of the cutting allowance enters on the fixed blade, the cutting edge portion is included in the operation guide structure portion of the rotary blade during the return operation to return the rotary blade to the initial position. The sheet waste will jam and cause jamming.
[0013]
In such a case, in the conventionally proposed sheet cutter apparatus, when the rotary blade is cutting the narrow band-shaped cutting margin portion while moving in the cutting direction along the fixed blade, it is integrated with the rotary blade. By pushing out the narrow strip-shaped cutting margin portion toward the downstream side in the conveying direction by the so-called Russell portion provided on the cutting edge, sheet waste at the cutting margin portion is prevented from entering the fixed blade ( For example, see Patent Document 1.)
[0014]
[Patent Document 1]
JP-A-7-52085
[0015]
[Problems to be solved by the invention]
In such a sheet cutter apparatus, in addition to the operation of cutting the sheet waste at the narrow band-shaped cutting margin portion, the operation of cutting the rear end side in the conveyance direction of the print having a predetermined shape on which the image is formed is also performed.
[0016]
In this sheet cutter, in order to cut off a printed product on which an image is formed, an image is formed when a so-called Russell portion is provided on the rotary blade when cutting the rear edge in the print conveyance direction. In addition, there is a problem in that the rear end side in the transport direction of the print is pushed and bent toward the downstream side in the transport direction, so that wrinkles may damage the commercial value on the surface of the print on which the image is formed.
[0017]
In consideration of the above-mentioned fact, the present invention enables the operation of cutting the sheet by cutting the product so as not to cause damage such as wrinkling of the product, and cutting so that the cut sheet waste does not cause jamming. It is an object of the present invention to newly provide a sheet cutter apparatus that can execute the work to be performed.
[0018]
[Means for Solving the Problems]
According to a first aspect of the present invention, the sheet cutter device moves the rotary blade head provided with the rotary blade corresponding to the fixed blade portion in a state in which the sheet is placed along the fixed blade portion. In the cutter device for a sheet to be cut, a path provided on the rotary blade head is provided on the rotary blade head so that the cutting edge of the sheet immediately after being cut by the rotary blade can pass through while maintaining the flat state of the sheet before cutting. In addition, the cutting piece in the sheet immediately after cutting with the rotary blade is disposed so as to be in sliding contact with the sheared force between the fixed blade portion and the rotary blade in a state released from the plane of the sheet before cutting, And a Russell guide surface that guides the cutting piece so as to guide the cutting piece in a direction away from the fixed blade side.
[0019]
By configuring as described above, the cutting edge portion in the sheet portion immediately after cutting with the rotary blade passes the path of the rotary blade head while maintaining a flat state. Therefore, when cutting the edge part of a sheet | seat, it can prevent that a wrinkle impairs a commercial value more on the surface of the sheet | seat part cut | disconnected while maintaining the state of a plane.
[0020]
Along with this, the cut piece in the sheet immediately after cutting with the rotary blade is released in a direction away from the plane of the sheet before cutting by the shearing force between the fixed blade portion and the rotary blade, and slidably contacts the Russell guide surface. The cut piece is guided and cut off in a direction away from the fixed blade side. Therefore, it is possible to prevent jamming from occurring when the cut-off sheet waste gets on the fixed blade portion side and the rotary blade head is returned.
[0021]
According to a second aspect of the present invention, in the sheet cutter device according to the first aspect, the conveying roller pair or the conveying guide is provided opposite to the fixed blade portion and downstream of the fixed blade portion in the sheet conveying direction. In addition, the distance in the sheet conveying direction between the pair of conveying rollers or the conveying guide and the fixed blade portion is configured to be equal to or less than the minimum value of the sheet conveying direction length of the image formed on the sheet.
[0022]
With the configuration as described above, when the sheet cutter device is used to cut the trailing edge in the sheet conveyance direction of the portion of the sheet on which the image is formed, the image portion always has a pair of conveyance rollers or conveyance. Since it is held by the guide, it is possible to prevent wrinkles from occurring in the portion where the cut side portion during cutting rises and the image is formed.
[0023]
According to a third aspect of the present invention, in the sheet cutter device according to the first aspect, the conveying roller pair or the conveying guide is provided opposite to the fixed blade portion and downstream of the fixed blade portion in the sheet conveying direction. In addition, the distance in the sheet conveying direction between the pair of conveying rollers or the conveying guide and the fixed blade portion is configured to be longer than the length in the sheet conveying direction of the blank portion removed by cutting.
[0024]
By configuring as described above, since the margin part is not held by the conveyance roller or the conveyance guide during the operation of cutting the margin part, the cut piece of the margin part in the sheet immediately after being cut by the rotary blade is Then, it is released and cut off in the direction of sliding contact with the Russell guide surface. Therefore, it is possible to prevent jamming from occurring when the cut-off blank portion of sheet waste gets on the fixed blade side and the rotary blade head is returned.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
A sheet cutter apparatus according to an embodiment of the present invention will be described with reference to FIGS.
[0026]
The sheet cutter apparatus according to the present embodiment is provided in a sheet cutting processing apparatus (cutter part) that is externally and integrally disposed on a part that carries out an output print created by the image forming apparatus main body (image forming part). It is configured as a sheet cutter device to be mounted.
[0027]
As shown in FIG. 1, an image forming apparatus main body (image forming unit) 10 is configured as an image forming apparatus of a laser exposure thermal development transfer method (silver salt photographic method), and is an exposure process that is an image forming processing function. And print with heat development and transfer.
[0028]
The image forming apparatus main body (image forming unit) 10 conveys a donor piece or an image receiving paper piece, which is a relatively large size image forming sheet that can be conveyed by a roller conveying device inside the apparatus main body 10. The process of forming the image is performed.
[0029]
At the same time, the image forming apparatus main body 10 is relatively large and can be conveyed by the roller conveying device inside the apparatus main body 10 when forming an image of a relatively small size that cannot be conveyed by the roller conveying apparatus inside the apparatus main body 10. When a plurality of relatively small-sized images are formed on a donor piece or image receiving paper piece or the like, which is a sheet body for image formation having a size larger than that, and output from the output unit of the apparatus main body 10, a cutter unit (cutter The image receiving paper piece or the like which is a sheet body on which an image is formed corresponding to an image of a relatively small size, and the image receiving paper piece or the like which is a sheet body of a relatively small size suitable for a relatively small size image It is configured to perform the finishing process.
[0030]
For this reason, the image forming apparatus main body 10 moves the cutter unit (cutter unit) 60 between the use state shown in FIGS. 1 and 2 and the standby state shown in FIG. 3 to the output part of the sheet body on which the image is formed. Wear so that it can be operated.
[0031]
When a relatively large size print such as an A3W size or A3 size photo print is created by the image forming apparatus main body 10, a process of forming an image is executed for each photo print. At this time, since the cutter unit (cutter unit) 60 is not used, the cutter unit 60 executes processing in a state set in the standby state shown in FIG.
[0032]
When a relatively large size print, for example, A3W size and A3 size photo prints are created in the image forming apparatus main body 10, the image forming apparatus main body 10 corresponds to, for example, the A3W size and A3 size. An image receiving paper magazine 14 storing a relatively large image receiving paper roll 12 (which may be an OHP film roll or the like) and a donor magazine storing a relatively large size donor roll 16 corresponding to the A3W size and the A3 size. Set 18 and use.
[0033]
When a relatively large size print, for example, A3W size and A3 size photographic prints are created by the image forming apparatus main body 10, an image data input signal is used as a preparatory step for executing the exposure processing step. An image processing signal obtained by processing is sent to the semiconductor unit 20 for preparation.
[0034]
In this image forming apparatus, the leading end of the donor roll 16 stored in the donor magazine 18 is pulled out by a pair of photosensitive material pulling rollers 22 and conveyed between a pair of exposure rollers 24 and 26.
[0035]
Then, a three-color simultaneous exposure process is performed on the exposure surface of the donor being transported at the exposure position between the pair of exposure rollers 24 and the pair of exposure rollers 26 using a laser (LD) light source of the semiconductor unit 20. Do. By this exposure process, the silver halide in the donor reacts with the light source to form a latent image.
[0036]
The donor on which the latent image is formed in this manner is cut by a cutter 28 when drawn out from the donor roll 16 wound in a roll shape, for example, A3W which is a relatively large size print. It is cut out by a donor piece, which is a large photosensitive material corresponding to the size or A3 size, and sent to the water application process arranged on the downstream side in the transport direction while being guided by the guide member 19 on the transport path.
[0037]
In this water application process, for example, a donor piece corresponding to A3W size or A3 size is received by the liquid application inlet roller 32 and fed into the liquid application device 34, and water is applied onto the surface of the donor piece by the liquid application device 34. From the surface to the squeeze roller 36, and the excess water remaining on the surface of the donor piece is squeezed out so that a predetermined amount of water is uniformly applied on the surface of the donor piece, and the downstream side in the transport direction To the heat development and color image transfer process.
[0038]
Further, in this image forming apparatus, at the same time as the above-described operation, the leading end portion of the image receiving paper roll 12 (which may be an OHP film roll or the like) stored in the image receiving paper magazine 14 is predetermined by a pair of image receiving paper drawing rollers 38. By pulling out the length and cutting with a cutter 40, it is cut into a relatively large size image receiving paper piece corresponding to, for example, A3W size or A3 size, and is guided on the transport path by the guide member 19 and arranged downstream in the transport direction. The image receiving paper standby roller 42 is sent to the image receiving paper standby roller 42 to wait for the timing of sending it to the heat development and color image transfer process adjacent to the downstream side in the conveying direction.
[0039]
In the heat development and color image transfer process, the image receiving paper piece (or an OHP film or the like) waiting on the image receiving paper standby roller 42 and the donor piece coated with water are aligned and heat developed. , And a heat development transfer processing unit 45 equipped with a belt conveying device for color image transfer processing.
[0040]
In this heat development transfer processing section 45, the image receiving paper piece and the donor piece coated with water are overlapped and bonded together by the inlet roller 44, and are heated by a heating device (not shown) in this state. As a result, development proceeds on the donor piece side, and the dye of the donor piece moves to the image receiving paper piece and is fixed, and the image of the donor piece is transferred to the image receiving paper piece. After the transfer operation in the heat development transfer processing unit 45 is completed, the bonded donor piece and the image receiving paper piece are sent from the exit roller 46 to the peeling step.
[0041]
In this peeling step, the used donor piece in a bonded state coming out of the exit roller 46 and the image receiving paper piece to which the image has been transferred are peeled off by a peeling claw 48 as a peeling member.
[0042]
The image receiving paper piece peeled off in the peeling step is completed as a high-quality color print, guided on the conveyance path by the guide member 19, and discharged by a single conveyance roller 30 on the downstream side in the conveyance direction. 50, and is discharged from the discharge roller 50 onto a discharge tray 56 disposed outside the apparatus main body 10 for use by the user.
[0043]
During the discharge operation onto the discharge tray 56, the cutter unit 60 is in a standby position and is detached from the exit of the conveyance path. Therefore, the relatively large size photo print discharged from the discharge roller 50 at the exit of the transport path is appropriately discharged onto the discharge tray 56 without any interruption.
[0044]
In addition, the used donor piece peeled off in the peeling step is sent to the discard unit 52 guided on the transport path by the guide member 19 and arranged on the downstream side in the transport direction, and is wound around the winding roll 54 and waits for disposal. And
[0045]
In the image forming apparatus main body 10, when creating a photographic print of a DSC size corresponding to an aspect ratio of image data of a digital still camera, for example, set as a relatively small size, the image forming apparatus main body 10. A relatively large size that is transportable by a roller transport device that transports a donor piece and an image receiving paper piece, respectively, for example, a size larger than A3 size (if it is larger than A3 size, it is necessary It can be used in various sizes according to the size.) A relatively small size such as an L size or a digital still camera using a donor piece and a receiving paper piece which are a single sheet body DSC size corresponding to the aspect ratio of the image data (A4, A4W, 4-cut size, 6-cut size depending on the device settings) 'S, 2L size, and outputs one of the image receiving paper on which the image has a plurality formation may also) like a postcard size, etc. (the sheet) from the output unit of the image forming apparatus main body (image forming section) 10.
[0046]
In the image forming apparatus main body 10, the cutter unit 60 set in the output unit has a relatively small size on an image receiving paper piece which is a relatively large sheet of, for example, A3 size or more. For example, the L size or the DSC size corresponding to the aspect ratio of the image data of the digital still camera (A4, A4W, 4-cut size, 6-cut size, 2L size, postcard size, etc. A plurality of images formed, such as L, which is a small size, for example, an L size, or a DSC size corresponding to an aspect ratio of image data of a digital still camera (depending on device settings). A4, A4W, 4-cut size, 6-cut size, 2L size, postcard size, etc. By cutting to divide the image portion of the stomach) or the like, to perform simultaneously make a plurality handle relatively small photographic print of the predetermined size.
[0047]
Next, a description will be given of the case where a relatively small size print, for example, an L size photo print is created by the image forming apparatus body 10.
[0048]
In this case, since the cutter unit (cutter part) 60 is used, the cutter unit 60 executes processing in a state set in the use state shown in FIGS. 1 and 2.
[0049]
When an L-size photo print is created by the image forming apparatus main body 10, the above-described processing for forming an image for each of the relatively large size prints, for example, A3W size or A3 size photo prints, is performed. As in the case of execution, each process is executed while being conveyed by the roller conveyance device.
[0050]
When an L size photographic print is created by the image forming apparatus main body 10, a plurality of L size photographic prints obtained by performing image processing on input signals of a plurality of image data in the exposure processing step. The integrated image processing signal and the cutting position reference marking image processing signal are sent to the semiconductor unit 20.
[0051]
In this semiconductor unit 20, for example, a predetermined length having a length equal to or longer than the shortest length that can be processed by the image forming apparatus main body 10 from the donor roll 16 (in this case, a single size larger than a relatively large A3 size). A three-color simultaneous exposure process using a laser (LD) light source on the exposed surface of the donor piece pulled out and cut by the cutter 28 to react the silver halide in the donor piece with the light source. A large black line segment with a width of 3 mm for marking on the basis of a cut position at a predetermined position in the center of the header portion at the leading end of the latent image in the transport direction. The latent image is formed in a predetermined format illustrated in FIGS.
[0052]
In the format illustrated in FIGS. 4 and 5, for example, a plurality of (four in the present embodiment) L-size images 62 arranged in the transport direction on an image receiving paper piece 66 of a predetermined size can be efficiently used without waste. Set to place.
[0053]
For this reason, in the format illustrated in FIGS. 4 and 5, the header portion 104 is set on the leading end side in the transport direction of the image receiving paper piece 66 of a predetermined size, and the cutting margin portion 108 is set between the two L-size images 62. A footer portion 106 is set on the rear end side in the transport direction of the image receiving paper piece 66 having a predetermined size.
[0054]
Next, in the semiconductor unit 20, a latent image in which a plurality of L-size images are arranged in the transport direction, and a thick black line segment for marking on the basis of the cut position on the header portion that is the leading end of the latent image in the transport direction. The donor pieces of a predetermined size that have undergone the exposure processing for forming the latent image in the shape of the predetermined format illustrated in FIGS. 4 and 5 are sent to the water application step.
[0055]
In this water application process, a predetermined small amount of water is uniformly applied onto the surface of the donor piece by the liquid application device 34 and sent to the next thermal development and color image transfer process.
[0056]
In this heat development and color image transfer process, for example, a predetermined length that is equal to or longer than the minimum length that can be processed by the image forming apparatus main body 10 from the image receiving paper roll 12 wound into a roll having a predetermined width (here, In this case, a relatively large A3 size or larger sheet) is pulled out and cut by the cutter 40, and a predetermined size of the image receiving paper piece (which may be an OHP film or the like) is overlapped with a donor piece coated with water. In this state, heating is performed by the heating device of the heat development transfer processing unit 45.
[0057]
As a result, development proceeds on the side of the donor piece, and the dye of the donor piece moves to the image receiving paper piece and is fixed, and the image of the donor piece is transferred to the image receiving paper piece. After this transfer operation is completed, the bonded donor piece and the image receiving paper piece are sent to the peeling step.
[0058]
In this peeling process, the used donor pieces are separated from the image receiving paper pieces having a predetermined width and a predetermined length on which a plurality of L-size images arranged along the conveying direction and a marking image based on the cut position are transferred. The donor pieces are discarded, and a plurality of (four in this embodiment) L-size images 62 and images of the cutting position reference markings 64 arranged in the conveyance direction as illustrated in FIG. 4 are transferred. An image receiving paper piece 66 (processed into a high-quality color print) having a predetermined width and a predetermined length is sent out from the output unit of the image forming apparatus main body 10 and into the cutter unit 68 of the cutter unit (cutter unit) 60. Deliver.
[0059]
The cutter unit 60 is a print of a relatively small size, for example, an L size that is smaller than an A3 size, a DSC size corresponding to an aspect ratio of image data of a digital still camera (A4, A4W, depending on device settings). 4 size, 6 size, 2L size, postcard size, etc.), etc. Configure to be cut out.
[0060]
As shown in FIG. 1, the cutter unit (cutter unit) 60 has, as another function of the image forming apparatus main body 10, for example, a plurality of L-size images 62 arranged along the conveyance direction as shown in FIG. 4, and As shown in FIGS. 5 and 6, the image receiving paper piece 66 having a predetermined width and a predetermined length onto which the image of the marking 64 based on the cut position is transferred is cut out into a photographic print on which four L-size images 62 are formed. Configure as an additional unit.
[0061]
Further, the cutter unit 60 mounts the cutter unit 68 on the mounting support 70 so as to be movable between a use state and a standby state, and the mounting support 70 is screwed to the output portion of the image forming apparatus main body 10. It is configured to be detachably attached by fastening.
[0062]
Although not shown, the attachment support 70 is fastened to a predetermined position on the wall surface of the output unit of the image forming apparatus main body 10 with a screw component. The lower end portion of the cutter device portion 68 is pivotally attached to the attachment support portion 70 with a shaft member, and is rotated between the use state position shown in FIGS. 1 and 2 and the standby state position shown in FIG. Attaches so as to be movable.
[0063]
Further, a locking mechanism (not shown) is mounted between the mounting support 70 and the cutter device 68, and the cutter device 68 is in the use state position shown in FIGS. 1 and 2 and in the standby state shown in FIG. Each position can be selectively held.
[0064]
The cutter device unit 68 is disposed at the position of the use state shown in FIGS. 1 and 2 and is a single sheet body as a cut object discharged from the output unit of the image forming apparatus main body 10 in FIG. An image receiving paper piece 66 having a predetermined width and a predetermined length onto which a plurality of L-size images 62 arranged in the conveyance direction as illustrated and an image of the marking 64 based on the cut position are transferred is conveyed on the conveyance path over the entire length thereof. It is configured to perform the work of cutting after being carried in.
[0065]
For this reason, the conveyance path 74 in the cutter unit 68 is configured to have a length capable of carrying the entire image receiving paper piece 66 having a predetermined width and a predetermined length.
[0066]
The conveyance path 74 in the cutter unit 68 is an object to be cut by sequentially arranging six pairs of conveyance rollers 76A, 76B, 76C, 76D, 76E, and 76F at respective predetermined positions from the inlet to the outlet. The image receiving paper piece 66 is configured to be transportable from the entrance toward the exit.
[0067]
In order to detect the skew of the image receiving paper piece 66 that is the object to be cut at a predetermined position between the conveying roller 76C and the conveying roller 76D on the exit side, a pair of paper is received on the conveying path 74 in the cutter device 68. A skew detection sensor 78 composed of a mechanical sensor is arranged.
[0068]
The skew detection sensor 78 constituted by the pair of mechanical sensors is an image receiving paper piece which is a cut object and is symmetrical with respect to the center line on a line segment orthogonal to the center line along the conveying direction of the image receiving paper piece 66. 66 are arranged at two predetermined positions in the width direction.
[0069]
On the transport path 74 in the cutter device 68, a cut position reference marking 64 formed on the image receiving paper piece 66, which is an object to be cut, is detected at a predetermined position in the vicinity of the transport roller 76D on the exit side. A light reflection type marking sensor 80 for sending a detection signal to a control unit (not shown) is disposed at a predetermined position through which the marking 64 based on the cut position of the image receiving paper piece 66 that is the object to be cut passes.
[0070]
Further, on the conveyance path 74 in the cutter unit 68, an image receiving paper piece that is a cut object is placed at a predetermined position between the conveyance roller 76 </ b> D and the conveyance roller 76 </ b> E on the exit side, which is downstream in the conveyance direction from the marking sensor 80. A circular cutter 82 for cutting 66 is disposed.
[0071]
The circular cutter 82 can be configured using a so-called rotary cutter that is normally used to cut the image receiving paper piece 66 that is an object to be cut (sheet).
[0072]
As illustrated in FIG. 1, the circular cutter 82 is diagonally positioned at a predetermined position on a conveyance path 74 that conveys the image receiving paper piece 66 toward the diagonally upward set in the cutter unit 60 set in a use state. In this state, the image receiving paper piece 66 is cut.
(First embodiment of guide means for rotary blade head)
As illustrated in FIGS. 6 and 7, the circular cutter 82 has a lower side of an inverted U-shaped member arranged so as to bridge in a direction crossing the conveying direction of the image receiving paper piece 66 (width direction of the image receiving paper piece 66). The portion is a rectangular long plate-shaped fixed blade portion 150, and the vertical side surface rising from the fixed blade portion 150 is a guide rail portion 152.
[0073]
This guide rail portion 152 is a rectangle having a sliding guide side parallel to the blade surface of the fixed blade portion 150 on the vertical side surface portion of the inverted U-shaped member over the range in the width direction of the image receiving paper piece 66. Configure as a long opening.
[0074]
A rotating blade head 154 that slides on the sliding guide side of the rectangular long opening is attached to the guide rail portion 152.
[0075]
The rotary cutter head 154 serving as the circular cutter 82 includes a slider portion 154A mounted so as to be slidable while being guided by a sliding guide side of the rectangular long opening of the guide rail portion 152, and the slider. And a support portion 154B for a rotary blade that is integrally formed so as to be suspended from the portion 154A.
[0076]
The slider portion 154A is configured to be moved on the guide rail portion 152 by the wire operation device 158.
[0077]
The wire operating device 158 has an operation wire 162 wound around a driving pulley (not shown) in a control unit 160 provided with a driving motor disposed at one end of the guide rail unit 152, and the other end of the guide rail unit 152. It is configured to reciprocate on a predetermined path that is wound around a pulley (not shown) that is arranged and returns to the drive control unit 160.
[0078]
Although not shown in the drawing, the wire operating device 158 has a rotating blade in conjunction with the reciprocating motion of the operating wire 162 by fixing a predetermined portion of the operating wire 162 to the slider 154A on the back side of the guide rail 152. Cutting operation for moving the head 154 from the initial position of one end on the drive control unit 160 side of the guide rail portion 152 to the other end, and drive control for the rotary blade head 154 from the other end after the cutting operation of the guide rail portion 152 is completed. And a return operation that moves to the initial position of the one end of the unit 160 side.
[0079]
The rotary blade support portion 154B of the rotary blade head 154 rotatably supports the disk-shaped rotary blade 156, and the portion of the blade formed on the circumference of the rotary blade 156 is the fixed blade portion 150. Make it come into sliding contact with the blade edge.
[0080]
As a result, when the rotary blade head 154 of the circular cutter 82 is moved in the cutting direction by the wire operating device 158, the rotary blade 156 is rotated by the frictional force between the fixed blade portion 150 and the rotary blade 156. In the figure of the fixed blade portion 150, the image receiving paper piece 66 brought into close contact with the lower side is sheared between the fixed blade portion 150 and the rotating rotary blade 156.
[0081]
When the rotary blade head 154 moves to the other end and completes the cutting operation, the rotary blade head 154 is returned to the initial position on the drive control unit 160 side by a return operation that reversely drives the wire operating device 158, and the next cutting operation is performed. Prepare and wait.
[0082]
Further, in this cutter device section 68, a pair of transport rollers 76 </ b> E is opposed to the fixed blade section 150 of the circular cutter 82 and on the downstream side in the transport direction (sheet transport direction) of the image receiving paper piece 66 (sheet) of the fixed blade section 150. Place. Instead of the pair of conveyance rollers 76E, although not shown, a conveyance guide that holds the image receiving paper piece 66 so as not to bend may be disposed.
[0083]
The pair of transport rollers 76E or the transport guide has an L size image in which the distance in the sheet transport direction from the cutting edge of the fixed blade portion 150 of the circular cutter 82 to the transport roller 76E or the transport guide is formed on the image receiving paper piece 66 (sheet). The sheet is arranged so as to be equal to or shorter than the length in the sheet conveying direction at 62.
[0084]
When the minimum image formed on the image receiving paper piece 66 is set to a size other than the L size image 62, the distance that is equal to or smaller than the minimum value of the length in the sheet conveying direction in the image formed on the image receiving paper piece 66. In addition, a pair of transport rollers 76E or a transport guide is disposed.
[0085]
In this way, when the pair of conveying rollers 76E or the conveying guide is arranged and configured with respect to the fixed blade portion 150 of the circular cutter 82, the portion of the image receiving paper piece 66 as a sheet formed by the circular cutter 82 is the portion of the image receiving paper piece 66. In the operation of cutting the rear end side in the sheet conveying direction, the image 62 portion is always nipped or guided by the pair of conveying rollers 76E or the conveying guide, so that the cutting edge portion being cut by the circular cutter 82 is It is possible to prevent wrinkles from standing up.
[0086]
Further, in this cutter device unit 68, a pair of conveyance units disposed opposite to the fixed blade unit 150 of the circular cutter 82 and on the downstream side in the conveyance direction (sheet conveyance direction) of the image receiving paper piece 66 (sheet) of the fixed blade unit 150. The distance in the sheet conveyance direction from the blade edge of the fixed blade portion 150 of the circular cutter 82 to the conveyance roller 76E or the conveyance guide is a margin portion (the header portion 104 or the cut portion of the image receiving paper piece 66) that is removed by cutting. The margin part 108 is a part that is cut off and becomes sheet waste and has a maximum length in the sheet conveyance direction).
[0087]
Next, it is possible to cut so as not to cause damage such as wrinkles on the L-size image 62 portion which is a product, and to cut the cut-off sheet waste 104, 106 or 108 so as not to cause jamming. A guide means for enabling execution will be described.
[0088]
In order to constitute this guide means, as shown in FIG. 6 and FIG. 7, an L-size formed in a planar shape following a portion that contacts the fixed blade portion 150 of the rotary blade 156 in the support portion 154B for the rotary blade. A guide surface 164 is formed to allow the cut side portion of the image 62 portion to pass therethrough.
[0089]
Furthermore, on the side surface of the slider portion 154A, at a position spaced apart from the guide surface 164 of the support portion 154B for the rotary blade by a predetermined interval forming a path through which the cut side portion of the L-size image 62 portion passes. A Russell portion 166 projecting in a trapezoidal shape is integrally projected.
[0090]
The Russell portion 166 forms a Russell guide surface 166A that rises in a slanting manner from the side surface of the slider portion 154A from the front end side in the advancing direction to the rear end side at the portion on the front end side in the advancing direction during the cutting operation.
[0091]
Next, by the rotary blade head 154 provided with the guide means as the circular cutter 82, the rear edge of the L-size image 62 portion in the image receiving paper piece 66 in the transport direction is cut, so that the cutting margin portion 108 or the footer portion 106 is removed. The case of cutting off will be described.
[0092]
In this case, the L-size image 62 portion on which the image on the image receiving paper piece 66 is formed is conveyed on the conveyance path 74 to the downstream side in the conveyance direction, and the L-size image 62 portion is sandwiched and held by the conveyance roller 76E. In this state, the cutting line 72 is stopped in a state where it coincides with the edge of the fixed blade portion 150.
[0093]
Next, the wire operating device 158 is driven and controlled to cut the rotary blade head 154, thereby executing the operation of separating the cutting margin portion 108 or the footer portion 106 from the L-size image 62.
[0094]
The operation of separating the cutting margin portion 108 or the footer portion 106 from the L-size image 62 is performed in a state where the L-size image 62 is supported by the conveying roller 76E as shown in FIG. 150 and the rotary blade 156 of the rotary blade head 154 do not cause the cutting side portion of the L-size image 62 immediately after cutting to rise toward the slider portion 154A side where the Russell portion 166 is located.
[0095]
For this reason, as shown in FIG. 6, the cutting edge portion in the L-size image 62 portion immediately after cutting with the fixed blade portion 150 and the rotary blade 156 maintains a flat state, as shown in FIG. 6. It passes the path on the guide surface 164 following the rotary blade 156 at 154B.
[0096]
Therefore, with the rotary blade head 154 in the circular cutter 82 which is the sheet cutter device, when cutting the rear end side in the transport direction of the L-size image 62 portion which is the printed product on which the image is formed, It is possible to prevent wrinkles on the surface from deteriorating the product value.
[0097]
Next, the rotary blade head 154 provided with the guide means in the circular cutter 82 cuts the front end side in the conveying direction of the L-size image 62 portion of the image receiving paper piece 66 to form a sheet such as the header portion 104 or the cutting margin portion 108. The case where the part which becomes waste is cut off is demonstrated.
[0098]
In this case, the header portion 104 or the cutting margin portion 108 of the image receiving paper piece 66 is conveyed on the conveying path 74 to the downstream side in the conveying direction, and the header portion 104 or the cutting margin portion 108 is formed in a free end shape from the fixed blade portion 150. In the extended state, the cutting line 72 is stopped in a state where it coincides with the edge of the fixed blade portion 150.
[0099]
Next, the wire operating device 158 is driven and controlled, and the cutting blade portion 154 or the footer portion 106 is cut off from the L-size image 62 by cutting the rotary blade head 154 with respect to the fixed blade portion 150. To do.
[0100]
The operation of separating the header portion 104 or the cutting allowance portion 108 from the L-size image 62 is executed in a state where the header portion 104 or the cutting allowance portion 108 is extended to a free end as shown in FIG. The cut piece of the header portion 104 or the cutting allowance portion 108 immediately after cutting by the rotary blade 156 of the rotary blade head 154 is caused by the shearing force between the fixed blade portion 150 and the rotary blade 156 to the slider portion 154A side. And is slidably brought into contact with the Russell guide surface 166A of the Russell portion 166 and pushed out from the position of the fixed blade portion 150 to the downstream side in the transport direction.
[0101]
For this reason, the cut piece of the header portion 104 or the cutting allowance portion 108 immediately after being cut by the rotary blade 156 is curved and is pulled away from the fixed blade portion 150 and the guide rail portion 152 as shown in FIG.
[0102]
Therefore, in the rotary blade head 154 in the circular cutter 82, the cut sheet waste 104 or 108 gets on the fixed blade portion 150 or the guide rail portion 152, and jamming occurs when the rotary blade head 154 is returned. Can be prevented.
[0103]
As described above, in the cutter unit 68, the conveying roller 76E has a length greater than or equal to the length of the longest sheet conveyance direction length in the header portion 104 or the cutting margin portion 108 from the cutting edge of the fixed blade portion 150. Since the header portion 104 or the cutting margin portion 108 is separated from the L size image 62, the header portion 104 or the cutting margin portion 108 is held by the conveyance roller 76E (or the conveyance guide). There is nothing to be done.
[0104]
Therefore, jamming can be prevented by holding and cutting the header portion 104 or the cutting allowance portion 108 by the conveyance roller 76E (or the conveyance guide).
(Second embodiment of guide means for rotary blade head)
Next, a second embodiment of the guide means in the rotary blade head 154 of the circular cutter 82 will be described with reference to FIGS.
[0105]
In the second embodiment of the guide means, the Russell guide surface 166A of the Russell portion 166 provided on the rotary blade head 154 is provided in a wider range.
[0106]
This rotary blade head 154 forms a Russell guide surface 166A from the hypotenuse that opposes the rotary blade 156 in the slider portion 154A to the range that opposes the guide surface 164.
[0107]
In the leading edge of the oblique side that opposes the rotary blade 156 in the raschel guide surface 166A formed in this way, a smooth oblique surface is formed from the side surface of the slider part 154A from the leading end side (free end side part side) to the rear end side in the traveling direction. A Russell guide surface 166A that rises in a shape is formed.
[0108]
In addition, a portion that is spaced apart from the guide surface 164 of the russell guide surface 166A in a continuous manner is formed in order to form a path that passes through the cut side portion of the L-size image 62 portion. A Russell guide surface 166A that rises in a slanting manner from the side surface of the slider portion 154A is formed from the guide surface 164 to the upper end side (the side opposite to the guide surface 164) in the drawing of the slider portion 154A.
[0109]
In the rotary blade head 154 provided with the guide means which is the circular cutter 82, the slider portion 154A formed with the Russell guide surface 166A shown in FIGS. 8 and 9, thereby the L size image 62 portion of the image receiving paper piece 66. When the cutting edge portion 108 or the footer portion 106 is cut off by cutting the rear end side in the conveying direction of the image, the L size image 62 portion is supported by the conveying roller 76E, and the L size image 62 immediately after being cut by the rotary blade 156. As shown by an imaginary line in FIG. 9, the cut side portion in the portion is sandwiched between the guide surface 164 and the Russell guide surface 166 </ b> A while maintaining a flat state without rising to the slider portion 154 </ b> A side. Pass on the path.
[0110]
Further, the cutting edge portion of the L-size image 62 portion immediately after cutting by the rotary blade 156 is guided so as to be sandwiched between the guide surface 164 and the Russell guide surface 166A and reliably passes through a predetermined path.
[0111]
Therefore, with the rotary blade head 154 in the circular cutter 82 which is the sheet cutter device, when cutting the rear end side in the transport direction of the L-size image 62 portion which is the printed product on which the image is formed, It is possible to prevent wrinkles on the surface from deteriorating the product value.
[0112]
In the rotary blade head 154 provided with the guide means which is the circular cutter 82, the slider portion 154A formed with the Russell guide surface 166A shown in FIGS. 8 and 9, thereby the L size image 62 portion of the image receiving paper piece 66. When the header part 104 or the cutting allowance part 108 is cut off by cutting the front end side in the conveying direction of the sheet, the header part 104 or the cutting allowance part 108 is cut in a state of being extended to a free end. The cutting piece of the header portion 104 or the cutting allowance portion 108 immediately after cutting at 156 rises to the slider portion 154A side by the action of the shearing force between the fixed blade portion 150 and the rotary blade 156, and becomes the rotary blade 156. It is slidably brought into contact with a russell guide surface 166A provided in a close range and is pushed out from the position of the fixed blade 150 to the downstream side in the transport direction.
[0113]
For this reason, the cut piece of the header portion 104 or the cutting allowance portion 108 immediately after being cut by the rotary blade 156 is reliably guided to the Russell guide surface 166A regardless of the state of rising to the slider portion 154A side. As indicated by an imaginary line in FIG. 9, it is pulled away from the fixed blade portion 150 and the guide rail portion 152 and falls.
[0114]
Therefore, in the rotary blade head 154 provided with the Russell guide surface 166A in the circular cutter 82, the cut sheet waste 104 or 108 gets on the fixed blade portion 150 or the guide rail portion 152, and the rotary blade head 154 is restored. It is possible to prevent jamming from occurring.
(Third embodiment of guide means for rotary blade head)
Next, a third embodiment of the guide means in the rotary blade head 154 of the circular cutter 82 will be described with reference to FIGS.
[0115]
In the third embodiment of the guide means, the position of guiding the raschel member having the raschel guide surface provided on the rotary blade head 154 so as not to be wrinkled on the product, and the guide so that the cut sheet waste does not jam. The posture to be switched is configured to be switchable.
[0116]
The rotary blade head 154 pivotally supports a triangular Russell member 168 as a guide means by a shaft member 170 at a corresponding position at a predetermined distance from the guide surface 164 in the slider portion 154A. 10 to guide the product shown in FIG. 10 so as not to be wrinkled, and the posture shown in FIG. 11 to guide the cut-off sheet waste so as not to jam. Wear it so that it can be switched.
[0117]
The russell member 168 is configured such that a side surface portion facing upward in the drawing is a raschel guide surface 168A, and a side surface portion opposed to the raschel guide surface 168A is configured as a path guide surface 168B.
[0118]
In the rotary blade head 154 provided with the guide means which is the circular cutter 82, the slider portion 154A provided with the Russell member 168 shown in FIGS. 10 and 11, thereby the L-size image 62 portion of the image receiving paper piece 66. When the cutting edge portion 108 or the footer portion 106 is cut off by cutting the rear end side in the conveying direction, the shaft member 170 that supports the Russell member 168 is controlled to rotate by a posture control means (not shown), so that FIG. Guide the product to avoid wrinkles.
[0119]
When the cutting process is executed in this posture, the L-size image 62 portion is supported by the conveyance roller 76E, and the cutting edge portion in the L-size image 62 portion immediately after cutting by the rotary blade 156 rises toward the slider portion 154A. As shown by an imaginary line in FIG. 10, while passing through the path sandwiched between the guide surface 164 and the path guide surface 168B, while maintaining a flat state.
[0120]
At this time, even if the cutting edge portion of the L-size image 62 immediately after cutting with the rotary blade 156 tries to rise somewhat toward the slider portion 154A side, it is guided by the path guide surface 168B and returned to the guide surface 164. Therefore, the cutting edge portion in the L-size image 62 portion immediately after cutting with the rotary blade 156 stably passes over the path sandwiched between the guide surface 164 and the path guide surface 168B.
[0121]
Therefore, with the rotary blade head 154 in the circular cutter 82 which is the sheet cutter device, when cutting the rear end side in the transport direction of the L-size image 62 portion which is the printed product on which the image is formed, It is possible to prevent wrinkles on the surface from deteriorating the product value.
[0122]
In the rotary blade head 154 having the guide means as the circular cutter 82, the Russell member 168 shown in FIGS. 10 and 11 cuts the front end side in the transport direction of the L-size image 62 portion of the image receiving paper piece 66. When the header portion 104 or the cutting allowance portion 108 is cut off, the shaft member 170 that supports the Russell member 168 is rotationally controlled by a posture control means (not shown), so that the cut sheet waste shown in FIG. The posture should be guided so as not to wake up.
[0123]
When the cutting process is executed in this posture, the header portion 104 or the cutting allowance portion 108 is cut in a state of extending in a free end shape, and therefore the cutting of the header portion 104 or the cutting allowance portion 108 immediately after cutting with the rotary blade 156 is performed. The piece rises toward the slider portion 154A due to the action of the shearing force between the fixed blade portion 150 and the rotary blade 156, and comes into sliding contact with the Russell guide surface 168A of the Russell member 168 from the position of the fixed blade portion 150. Pushed downstream in the transport direction.
[0124]
For this reason, the cut piece of the header portion 104 or the cutting allowance portion 108 immediately after being cut by the rotary blade 156 is pulled away from the fixed blade portion 150 and the guide rail portion 152 as shown by an imaginary line in FIG.
[0125]
Therefore, in the rotary blade head 154 provided with the Russell guide surface 166A in the circular cutter 82, the cut sheet waste 104 or 108 gets on the fixed blade portion 150 or the guide rail portion 152, and the rotary blade head 154 is restored. It is possible to prevent jamming from occurring.
[0126]
The rotary blade head 154 provided with the guide means for the rotary blade head described above is used by being mounted on the circular cutter 82 of the cutter unit 60 shown in FIG.
[0127]
Although not shown, the circular cutter 82 has one end extending in the width direction of the transport path attached to the base of the transport path by a shaft member, and the other end is driven by a tilt drive motor to drive a required amount. The cutter 82 is configured so as to be able to perform a tilt adjustment operation for adjusting a required angle rotation around the shaft member.
[0128]
That is, the circular cutter 82 is configured to be able to execute a tilt correction process for adjusting a required angle rotation so as to be inclined with respect to the conveyance direction so as to match the skew state of the image receiving paper piece 66 conveyed on the conveyance path 74. Do
Further, the circular cutter 82 is configured such that the control unit calculates the skew amount of the image receiving paper piece 66 by using a pair of skew detection sensors 78, and the control unit controls the tilting drive of the circular cutter 82 so as to correspond thereto.
[0129]
Further, the control unit detects the position of the marking 64 based on the cut position with the marking sensor 80, and performs image position correction processing for correcting the position so as to match the skew state of the image receiving paper piece 66 detected by the skew detection sensor 78. Then, the image receiving paper piece 66 is conveyed to a cutting position corresponding to the L-size image 62, and the circular cutter 82 is driven to perform the cutting control.
[0130]
The tray 84 is mounted on the free end of the cutter device 68 so as to be rotatable from the use state to the storage state, and the piece of image receiving paper discharged from the exit of the conveyance path 74 when the use state shown in FIG. The photographic print formed by cutting 66 can be received and placed, and the tray 84 can be stored so as not to get in the way when the cutter unit 68 is in a standby state.
[0131]
Next, in the cutter unit section 68 of the cutter unit 60, for example, the image receiving paper piece 66 as the sheet illustrated in FIG. 4 formed in the image forming apparatus main body 10 is cut along the cutting lines 72 with a relatively small size. The operation and action for cutting out an L-size image 62 will be described.
[0132]
The cutter unit 60 set in the use state shown in FIG. 1 receives an image as a sheet on which images of a plurality of L size images 62 and cut position reference markings 64 are formed from the output unit of the image forming apparatus main body 10. When the paper piece 66 is fed onto the conveyance path 74, a control unit (not shown) drives the conveyance rollers 76A, 76B, 76C, 76D, 76E, and 76F to convey the image receiving paper piece 66 as a sheet on the conveyance path 74.
[0133]
When the leading end portion of the image receiving paper piece 66 as a sheet reaches the position of the pair of skew detection sensors 78 by this conveying operation, the pair of skew detecting sensors 78 controls the detection signals respectively detecting the leading end portion of the image receiving paper piece 66. To the part.
[0134]
Upon receiving the detection signals from the pair of skew detection sensors 78, the control unit drives a tilt drive motor (not shown) by a tilt correction amount calculated according to the skew amount at that time by a predetermined tilt correction algorithm. As a result, the circular cutter 82 is tilt-corrected and stands by.
[0135]
Next, the image receiving paper piece 66 as a sheet is conveyed on the conveying path 74 by conveying rollers 76A, 76B, 76C, 76D, 76E, and 76F, and when the marking sensor 80 detects the marking 64 based on the cut position, the marking sensor 80 Transmits a detection signal for detecting the marking 64 based on the cut position to the control unit.
[0136]
Upon receiving the detection signal from the marking sensor 80, the control unit conveys each predetermined conveyance amount corrected based on the correction value calculated by the image position correction algorithm, whereby the image receiving paper piece 66 as a sheet is moved to each cutting position. Carry.
[0137]
When the image receiving paper piece 66 as a sheet to be cut is conveyed to each cutting position and stopped as described above, the control unit moves the position of each cutting line 72 indicated by a broken line in FIG. 4 to the circular cutter 82. In the state stopped to the coincidence, the circular cutter 82 is driven as described above to cut the image receiving paper piece 66 as a sheet along the direction crossing the conveying direction, and each L size image is shown in FIG. A process of cutting out 62 parts is performed.
[0138]
The photographic prints of the respective L-size images 62 cut in this way are conveyed on the conveyance path 74 by the conveyance rollers 76A, 76B, 76C, 76D, 76E, and 76F, and sequentially from the exit of the cutter unit 68 to the outside. The paper is discharged onto the tray 84 and accumulated.
[0139]
Further, the sheet waste generated by the cutting process of the circular cutter 82 is stored in the waste box 100 disposed in the cutter unit 60.
[0140]
The above-described cutter unit 60 according to the present embodiment is an externally attached (retrofitted) cutter unit 60 attached to the output unit of the image forming apparatus main body 10. The cutter unit 60 can be controlled by an independent control system. You may comprise, and you may comprise so that a control signal may be obtained from the control part by the side of the image forming apparatus main body (image forming part) 10 and controlled. The cutter unit (cutter unit) 60 according to the present embodiment is provided inside the image forming apparatus main body (image forming unit) 10, and the image forming apparatus main body (image forming unit) 10 and the cutter unit (cutter unit) 60 are provided. You may comprise so that it may become an integral apparatus.
[0141]
Further, in the cutter unit 60 of the present embodiment, an operation in which a plurality of images having a relatively small size formed on one image receiving paper piece 66 having a relatively large size is cut so as to be divided into relatively small image portions. The cutter unit 60 switches the state of whether the photographic prints in which one image is formed on a general relatively large size receiving paper piece can be discharged to the discharge tray 56 on the image forming apparatus main body 10 side. The switching operation can be performed depending on whether or not is set at the position of use state or at the position of standby state.
[0142]
In this embodiment, the cutter unit 60 mounted on the output part of the image forming apparatus main body 10 of the laser exposure heat development transfer method (silver salt photography method) has been described. However, the sheet cutter device of the present invention is shown in FIG. A cutter unit 60 mounted on an output unit of an arbitrary image forming apparatus that outputs a sheet body having a predetermined shape formed in a predetermined format in which a marking 64 based on a cut position and a plurality of images 62 as illustrated in FIG. 5 are provided. Of course, it can be configured as a sheet cutter apparatus provided with guide means for a rotary blade head used for other independent cutter units.
[0143]
【The invention's effect】
As described above, according to the sheet cutter device of the present invention, it is possible to perform an operation of cutting a sheet and cutting the product so as not to cause damage such as wrinkling on the product, and jamming of the cut sheet waste There is an effect that it is possible to perform the cutting operation so as not to cause the trouble.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram illustrating an image forming apparatus equipped with a cutter unit including a sheet cutter device according to an embodiment of the present invention.
FIG. 2 is a perspective view of a main part showing a portion where a cutter unit including a sheet cutter device according to an embodiment of the present invention is attached to an image forming apparatus main body in a use state.
FIG. 3 is a perspective view of a main part showing a portion where a cutter unit including a sheet cutter device according to an embodiment of the present invention is attached to the image forming apparatus main body in a standby state.
FIG. 4 is an overall plan view showing a format of an image receiving paper piece output from a main body of an image forming apparatus, which is a target to be cut by a cutter unit including a sheet cutter device according to an embodiment of the present invention.
FIG. 5 is an overall plan view illustrating an image receiving paper piece cut in the format shown in FIG. 4 by a cutter unit including a sheet cutter device according to an embodiment of the invention.
FIG. 6 is a schematic perspective view showing a main part extracted from the part of the sheet cutter device according to the first example attached to the cutter unit according to the embodiment of the present invention;
FIG. 7 is a schematic perspective view of a main part taken out and showing a portion of a rotary blade head in the sheet cutter device according to the first example attached to the cutter unit according to the embodiment of the present invention.
FIG. 8 is a schematic perspective view of a main part taken out and showing a part of a rotary blade head in a sheet cutter device according to a second example attached to a cutter unit according to an embodiment of the present invention.
FIG. 9 is a schematic side view showing a main part of a rotary blade head in the sheet cutter device according to the second embodiment mounted on a cutter unit according to an embodiment of the present invention.
FIG. 10 is a schematic perspective view showing a main part taken out and showing a portion of a rotary blade head when an L-size image portion is cut out in a sheet cutter device according to a third embodiment mounted on a cutter unit according to an embodiment of the present invention; FIG.
FIG. 11 is a schematic view of a main part taken out and showing a part of a rotary blade head when a cutting margin part or a header part is cut out in the sheet cutter apparatus of the third example attached to the cutter unit according to the embodiment of the present invention. It is a perspective view.
[Explanation of symbols]
10 Image forming device body
60 cutter units
62 L size image
64 Cutting position reference marking
66 Image-receiving paper pieces
68 Cutter unit
72 Cutting line
104 Header part
106 Footer part
108 Cutting allowance
150 Fixed blade
152 Guide rail
154 Rotary blade head
154A Slider part
154B Rotary blade support
156 Rotary blade
158 Wire operating device
162 Operation wire
164 Guide surface
166 Russell
166A Russell guide surface
168B Guide surface for pass
168 Russell member
168A Russell guide surface
170 Shaft member

Claims (3)

In a sheet cutter device for cutting a sheet by moving and operating a rotary blade head provided with a rotary blade corresponding to the fixed blade portion in a state where the sheet is placed along the fixed blade portion,
A path that is provided in the rotary blade head and that can be passed while the cutting edge of the sheet immediately after cutting with the rotary blade maintains the flat state of the sheet before cutting,
A cutting piece in the sheet immediately after being cut by the rotary blade provided in the rotary blade head was released in a direction away from the plane of the sheet before cutting by a shearing force between the fixed blade portion and the rotary blade. A Russell guide surface that is arranged so as to be in sliding contact with the state and guides the cutting piece in a direction away from the fixed blade portion side;
A sheet cutter apparatus comprising: A pair of conveyance rollers or a conveyance guide is provided opposite to the fixed blade portion and downstream of the fixed blade portion in the sheet conveyance direction, and the conveyance roller pair or the conveyance guide and the fixed blade portion The sheet cutter apparatus according to claim 1, wherein a distance in the sheet conveyance direction is configured to be equal to or less than a minimum value of a length in the sheet conveyance direction of an image formed on the sheet. A pair of conveyance rollers or a conveyance guide is provided opposite to the fixed blade portion and downstream of the fixed blade portion in the sheet conveyance direction, and the conveyance roller pair or the conveyance guide and the fixed blade portion The sheet cutter apparatus according to claim 1, wherein the distance in the sheet conveying direction is configured to be equal to or longer than the length in the sheet conveying direction of a blank portion to be removed by cutting.

Images