JP4249382B2 - Cover gluing detector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of bookbinding. In particular, the present invention belongs to the technical field of detecting whether or not the top and bottom direction of the cover fed to the bookbinding apparatus is good so that the cover and the top and bottom of the text are not mistaken (joined) during bookbinding.
[0002]
[Prior art]
There is a guru detection device that detects an error in the top and bottom when supplying text in a bookbinding machine. This type of guru detection device makes a pass / fail determination based on the spine of the text (the mark on the back). In order to make it easy to distinguish the order of the signatures, numbers indicating the name of the book and the order of folding are imprinted on the back of the signatures (backs). In addition, in order to make it easy to find missing pages, random pages, captures, etc., a mark is imprinted on the back of the signature at a position that is aligned with a diagonal line when correctly collated (back sign). Since the back of the main body has a characteristic back sign by the back and the back sign, for example, an optical sensor is used to detect an area where the shading changes due to an error in the top and bottom, and the error in the top and bottom is determined based on that. It is being detected.
[0003]
[Problems to be solved by the invention]
However, since the above-described guru detection device detects the shading of the spine present on the back part of the text, it detects the shading of the spine if the spine is difficult to appear and is not stable (for example, Ajiro binding). I can't. Further, when the back mark is a color in a color printed matter, it is difficult to detect the shading of the back mark. That is, there is a problem that the above-described glu detection device cannot be used, or even if it can be used, there are many malfunctions that hinder production.
[0004]
Further, the above-described guru detection device is a content guru (text guru) detection device and not a cover guru detection device. The cover is manually supplied by the operator on the bookbinding machine that combines the text of the upper bookbinding and the cover, and many covers can be supplied at once. For this reason, once it occurs, a large amount of cover glue is generated.
[0005]
The present invention has been made to solve the above problems. It is an object of the present invention to provide a cover gluing detection method and apparatus that can detect an error in the top and bottom of the upper bookbinding with high reliability.
[0008]
[Means for Solving the Problems]
The above problems are solved by the present invention described below. In other words, the cover glue detecting device according to claim 3 of the present invention is configured to capture an image of an upper bound cover and output an imaging signal, an illumination unit that illuminates an imaging area of the imaging unit, and the imaging signal input. A / D conversion (analog-to-digital converting) means for obtaining a captured image by converting it into digital data, determination area setting means for setting a determination area within the captured image, and display color of the determination area A designated color setting means for setting a designated color from within, a designated color area extracting means for extracting a designated color area from the determination area based on the designated color, and the number of designated color areas by counting the number of pixels of the designated color area The specified color area number counting means for outputting, the reference specified color area number that is the specified color area number of the cover that is the determination reference, and the inspection target specified color area number that is the specified color area number of the cover that is the determination target Compare with Pass / fail judgment means for performing pass / fail judgment output of the orientation of the cover.
[0009]
According to the present invention, the cover is imaged by the imaging unit and the imaging signal is output, the imaging area of the imaging unit is illuminated by the illumination unit, the imaging signal is input by the A / D conversion unit, converted into digital data, and the captured image is converted. The determination area is set in the captured image by the determination area setting means, the specified color is set from the display colors in the determination area by the specified color setting means, and determined based on the specified color by the specified color area extraction means. The specified color area is extracted from the area, the number of pixels of the specified color area is counted by the specified color area number counting means, the specified color area number is output, and the standard which is the specified color area number of the cover which is the determination criterion by the pass / fail judgment means The number of designated color areas is compared with the number of designated color areas to be inspected, which is the number of designated color areas of the cover to be determined, and a quality determination output for the orientation of the cover is performed. According to the present invention, the suitability is determined based on the area of the predetermined color in the predetermined determination area in which the shape and / or color of the image largely changes due to an error in the top and bottom in the captured image of the cover. Therefore, there is provided a cover sheet gluing detection device that can detect an error in the top and bottom of the cover sheet with high reliability.
[0010]
According to a second aspect of the present invention, there is provided a cover glu detection device according to the first aspect of the present invention, wherein the imaging is a part that feeds the cover on the bookbinding machine that combines the text of the upper bookbinding and the cover. It is intended to be performed in According to the present invention, since the top and bottom of the cover is never changed in the subsequent steps, it is possible to completely prevent the top and bottom of the cover from being mistaken.
[0011]
According to a third aspect of the present invention, there is provided a front cover gluing detection device according to the first or second aspect , wherein the front cover gluing detection device detects that the front cover has reached a predetermined position and outputs an arrival signal. The imaging means performs the imaging in synchronization with the arrival signal. According to the present invention, since the imaging is performed in synchronization with the arrival signal on the cover, high synchronization accuracy can be obtained. In addition, when there is no cover due to idle driving or the like, an erroneous determination is avoided without performing imaging.
[0012]
According to a fourth aspect of the present invention, there is provided the cover guru detection device according to any one of the first to third aspects, wherein the imaging unit is configured to illuminate and the imaging unit captures an image. An imaging area setting unit is provided. According to the present invention, it is possible to appropriately set the imaging region.
[0013]
According to a fifth aspect of the present invention, there is provided a cover glu detection device according to any one of claims 1 to 4 , wherein the pass / fail detection output is inputted and the alarm is output when the determination is a defective product. An alarm output means is provided. According to the present invention, when a defective cover is detected, an alarm is output.
[0014]
According to a sixth aspect of the present invention, there is provided a cover sheet gluing detection device according to any one of the first to fifth aspects, wherein when the determination is a defective product by inputting the pass / fail determination output, Stop signal output means for outputting a stop signal for stopping the operation is provided. According to the present invention, when a defective cover guru is detected, the operation of the bookbinding machine is automatically stopped.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described. First, the overall image of the cover gluing detection device of the present invention will be described. An example of the configuration of the cover sheet gluing detection device of the present invention is shown in FIG. FIG. 2 shows an example of the cover sheet gluing device of the present invention that is installed at a position just before the cover is wrapped (combined) in the text in the bookbinding machine that combines the text of the upper book and the cover. FIG. 3 is a pictorial diagram showing an example of processing in the bookbinding machine that combines the text of the upper bookbinding and the cover.
[0016]
In FIG. 1, 1 is an image pickup means, 2 is an illumination means, 3 is a main body of a cover sheet gluing detection device, 4 is an alarm means, 5 is an arrival detection means, 6 is an imaging area setting means, 7 is an operation input means, A display monitor, 32 is an abnormal return button switch, 33 is a machine stop button switch, 34 is a setting / operation switch, and 502a, 502b, and 502c are cover sheets. 2 and 3, 1 is an image pickup means, 5 is an arrival detection means, 101 is a body feeder, 102 is a rounding portion, 103 is an earing portion, 104 and 106 are adhesive application portions, and 105 and 107 are A back pasting portion, 108 is a cover feeder, 109 is a cover case portion, 501 is a text, and 502 is a cover.
[0017]
The imaging means 1 is a camera (imaging device) having an area sensor such as a CCD (charge coupled device) and an imaging optical system. The image pickup means 1 feeds the cover sheets 502 one by one from the cover feeder 108 in the bookbinding machine that combines the text of the upper bookbinding and the cover, and then images the cover 502 and outputs an imaging signal. In the example shown in FIGS. 1, 2, and 3, the cover sheet 502 fed from the cover sheet feeder 108 is intermittently conveyed at intervals. The imaging means 1 of the cover sheet gluing detection apparatus performs imaging at a position corresponding to the downstream side of the cover sheet feeder 108 and the upstream side of the front cover case 109.
[0018]
The illumination unit 2 illuminates the imaging area of the imaging unit 1. The illumination means 2 can be a ring-shaped fluorescent lamp, a metal halide lamp, a halogen lamp, a xenon lamp, or the like, or a well-known illuminating device in which an optical fiber or a reflecting mirror is combined therewith, and is not particularly limited. There may be a special condition in the place where the cover guru detection is performed, for example, fluctuation of external light. Treatments such as shading and obtaining sufficient illuminance so as not to adversely affect imaging are natural design matters.
[0019]
The main body 3 is a part that inputs an image pickup signal of the image pickup means 1 and performs a calculation to determine pass / fail. The main body 3 can be configured by hardware and software of a data processing device such as a personal computer, a microcomputer, and a dedicated arithmetic device. As shown in FIG. 1, a display monitor 31, an abnormal return button switch 32, a machine stop button switch 33, a setting / operation changeover switch 34, etc. are attached to the panel of the main body 3. Details of the configuration and operation of the main body 3 will be described later.
[0020]
The alarm output means 4 inputs the quality determination data of the main body 3. Then, when the pass / fail judgment data indicates a defective product, that is, when a guru is detected, an alarm is output. The alarm output means 4 can be constituted by a buzzer and a relay circuit for turning on / off the power supplied to the buzzer.
[0021]
The arrival detection means 5 detects that the text 501 conveyed by the feeder 108 has reached a predetermined position and outputs an arrival signal. The predetermined position is usually a position where the cover is within the imaging area. The arrival detection means 5 can be constituted by a reflection type or transmission type optical switch having a light projecting part and a light receiving part.
[0022]
The imaging area setting unit 6 sets an imaging area in which the above-described illumination unit 2 illuminates and the imaging unit 1 performs imaging. In the example illustrated in FIG. 1, the imaging unit 1 performs imaging through a hole in the center of the ring of the illumination unit 2 having a ring-shaped fluorescent lamp, and the imaging unit 1 and the illumination unit 2 are integrated. It has become. The imaging area setting unit 6 supports the imaging unit 1 and the illumination unit 2 that are integrated with each other so that the imaging unit 1 and the illumination unit 2 can be moved to a predetermined position and can be fixed in a space above the conveyance unit with a holder. For example, the imaging area setting unit 6 includes a guide mechanism and a fixing mechanism that can move positions in the left-right direction and the conveyance direction.
[0023]
The operation input means 7 is a part where an operator performs input for operating the cover sheet gluing detection device. It is mainly used for setting input such as a judgment area and a designated color.
[0024]
Here, a brief description will be given of a bookbinding machine (simply referred to as a bookbinding machine) that combines the text of the upper bookbinding and the cover to which the cover sheet gluing detection device of the present invention is applied. As described above, in the bookbinding machine shown in FIGS. 2 and 3, the bookbinding machine includes the body feeder 101, the rounding part 102, the earing part 103, the adhesive application parts 104 and 106, the back pasting parts 105 and 107, The front cover feeder 108 and the front cover case 109 are connected. The imaging means 1 of the cover sheet gluing detection apparatus is installed immediately before the cover case 109.
[0025]
The body feeder 101 sends the body 501 to the bookbinding machine. For example, the text 501 that has been finished with a three-way cutting machine is stacked on a pallet and carried to a bookbinding machine. The operator places a plurality of copies of the text 501 on the entrance of the text feeder 101 by hand. The body feeder 101 synchronizes with the operation of the bookbinding machine and separates the body text 501 overlapping at the entrance in synchronization with the operation of the bookbinding machine one by one. The body feeder 101 then feeds the body 501 to the bookbinding machine with the body 501 facing up so that it is suitable for processing in the bookbinding machine.
[0026]
The rounding unit 102 rounds the back of the text 501. The body 501 is rounded by mechanically pressing the back of the body 501 with a round mold (concave mold).
The ear protrusion 103 processes the rounded text 501 so that the back of the text 501 protrudes from the front and back sides of the text 501. The cross section of the back of the body 501 is shaped like a ginkgo leaf. The parts other than the back of the body 501 are fixed with a vise, and the shape of the ear is attached by swinging the back to the front and back sides of the body 501.
[0027]
The adhesive application units 104 and 106 apply the adhesive to the back of the text 501 that has been eared. Glue is used for the adhesive.
The back pasting portions 105 and 107 attach a cold chill to the back of the body 501 to which the adhesive is applied, and perform the back consolidation. These adhesive application and back pasting are usually performed a plurality of times. In the example shown in FIG. 3, it is performed twice, and in the back pasting, flower cloth is attached along the upper and lower roundness of the back side.
[0028]
The cover feeder 108 feeds the cover 502 to the cover cover 109. For example, the cover sheet 502 processed in another process is stacked at the entrance of the cover feeder 108 by the operator's manual work. Stacked cover sheets 502 are separated and fed one by one by the cover sheet feeder 108 in synchronization with the operation of the bookbinding machine. At this time, the top / bottom direction of the cover 502 may be opposite to the normal direction.
[0029]
The cover case 109 bonds the outer side surfaces (both sides of the sheet) of the body 501 that have been back-stiffened to the inner side surfaces of the cover sheet 502. That is, a cover 502 is wrapped around the body 501. The cover sheet feeder 108 feeds the cover sheet 502 above the portion around the body 501. On the other hand, the body 501 is lifted upward by an elevator mechanism in the cover case 109, and an adhesive is applied to both sides of the turn. Further, it is lifted upward, and the body 501 and the cover 502 are combined. At this time, both outer side surfaces are pressed by the roller, and the adhesive application surface in the main body 501 and the inner side surfaces in the cover 502 are brought into close contact with each other for bonding.
[0030]
Next, data processing in the cover sheet gluing detection device of the present invention will be described. An example of the configuration of the data processing means in the cover sheet gluing device of the present invention is shown in a block diagram in FIG. In FIG. 4, 1 is an imaging means, 2 is an illumination means, 4 is an alarm output means, 5 is an arrival detection means, 6 is an imaging area setting means, 71 is a determination area setting means, 72 is a designated color setting means, and 301 is A. / D conversion means, 302 is image storage means, 303 is designated color area extraction means, 304 is designated color area number counting means, 305 is reference designated color area number storage means, 306 is inspection object designated color area number storage means, 307 Is pass / fail judgment means, and 308 is a stop signal output means.
[0031]
Further, the data processing process in the cover sheet gluing device of the present invention is shown in the flow charts of FIGS. FIG. 5A is a flowchart of the entire data processing process in cover guru detection. The cover glu detection process is roughly divided into a setting process in step S1 and an operation process in step S2. Yes. FIG. 5B shows a detailed process in the setting process in step S1, and FIG. 6 shows a detailed process in the operation process in step S2.
[0032]
Data processing in the cover sheet gluing detection device of the present invention will be described with reference to FIGS. 4, 5, and 6. It is assumed that the front cover is already fed one by one in the cover feeder 108 of the bookbinding machine that combines the text of the upper book and the cover, and is conveyed below the imaging position in the imaging means 1 of the cover glu detection device. First, in step S101 (imaging area setting) in the setting process, the operator sets the setting / operation switch. Further, the imaging region setting unit 6 sets the imaging region by adjusting the positions of the imaging unit 1 and the illumination unit 2 so that an appropriate region in the conveyed text is captured (see FIG. 1 and its description). . The imaging area of the imaging means 1 is illuminated by the illumination means 2. At this time, the positional relationship with the arrival detection means 5 is considered, but the position of the arrival detection means 5 is also set as necessary.
[0033]
Next, in step S102 (reference screen registration), the arrival detection means 5 detects that the text being conveyed has reached the imaging region, and outputs an arrival signal. The imaging means 1 inputs the arrival signal, and performs imaging in synchronization with the arrival signal, thereby imaging the cover of the main text and outputting the imaging signal. An A / D conversion (analog-to-digital converting) unit 301 converts an imaging signal, which is an analog signal, into digital data and generates a captured image. The captured image is stored in the image storage unit 302. The operator inputs an instruction to display the captured image stored in the image storage unit 302 on the monitor 31 (see FIG. 1) of the main body 3 from the operation input unit 7, and there is a defect in the captured image, for example, the imaging range is inappropriate. , Whether or not there is an out of focus (out of focus), etc. If there are deficient points, repetitive imaging is performed after removing the deficiencies. If there are no deficiencies, go to the next step.
[0034]
Next, in step S103 (determination area setting), the operator sets a determination area based on the captured image displayed simultaneously on the monitor 31 and the determination area frame. That is, when the determination area frame is operated and an appropriate position and size are obtained, an instruction input for setting the determination area is performed from the operation input means 7. The determination region is filled with a pattern having a large area of one color, and when the cover is turned in the opposite direction, the same color is not present, or a cover region having a large difference in area even if there is the same color is appropriate. The determination area is set by the determination area setting means 71, and the data of the set determination area is stored by the determination area setting means 71.
[0035]
Next, in step S104 (specified color setting), the operator sets the specified color in the captured image inside the determination area frame displayed on the monitor 31. The designated color is not the same color as the designated color when the cover is turned in the opposite direction, or the color of the part of the pattern having a large area difference even if the same color exists. When the designated color is set, the number of pixels corresponding to the area of the designated color in the determination area, that is, the area of the designated color area is counted. This counting process is performed by the following steps. That is, first, when the determination area and the specified color are set, the specified color area is extracted by the specified color area extracting unit 303. Next, the number of designated color areas is counted by the designated color area number counting means 304. The number of designated color areas is stored in the reference designated color area number storage means 305. The operator can confirm the number of pixels in the designated color area and can be used as a reference for setting the designated color.
[0036]
Next, in step S105 (allowable range setting), the operator sets an allowable range of the number of pixels in the designated color region. The number of pixels in the designated color region changes every time an image is taken, even if the cover is a good one, due to subtle fluctuations in the picture density of the cover and imaging conditions. The permissible range is to prevent this normal fluctuation from being erroneously determined as guru. However, if the allowable range is too large, an erroneous determination that the product is a non-defective product will occur even if it is a defective cover. Therefore, it is necessary to set an appropriate allowable range. The allowable range is equivalent to setting an upper limit value and a lower limit value for the number of pixels in the specified color area described above. The upper limit value and lower limit value are stored in the pass / fail judgment means 307.
[0037]
Next, in step S106 (operation preparation), the setting / operation changeover switch is set to operation. The cover is fed in the normal direction in the holding means with the holding tool, and it is confirmed that the non-defective product determination is performed in the gluing detector. Next, a cover sheet is flowed in a direction opposite to normal in the transporting means with a holding tool, and it is confirmed by an alarm or the like that a defective product determination is performed in the glue detector. If there is an abnormality in this operation check, the setting process is repeated. If there is no abnormality, the process proceeds to the next step “operation”.
[0038]
Next, the operation of the bookbinding machine for combining the cover of the upper bookbinding and the cover is started, and the cover is transported by the transporting means with holder. In step S201 (arrival detection) in the operation process, the arrival detection means 5 keeps monitoring that the cover reaches the predetermined position described above (S102), and the cover glue detection device is in a standby state. When it detects that the cover has reached a predetermined position, it outputs an arrival signal.
Next, in step S202 (imaging), the imaging means 1 images the cover in synchronization with the arrival signal. The imaging signal output by the imaging unit 1 is converted into digital data by the A / D conversion unit 301 to obtain a captured image.
Next, in step S <b> 203 (image storage), the captured image is stored in the image storage unit 302.
[0039]
Next, in step S204 (designated color area extraction), the designated color area extraction unit 303 extracts the designated color area from the determination area (S103) based on the designated color (S104).
Here, an example of a method for extracting the designated color region will be described. For example, an upper limit value and a lower limit value threshold are set for the primary color components RGB (red, green, blue) of the designated color. Then, the designated color region is defined as a set of pixels that satisfy all the threshold conditions. When brightness (brightness) changes even with the same color (hue), when extracting areas of the same color with different brightness, the threshold width between the upper limit value and the lower limit value is reduced in hue, and in brightness Enlarge. For example, for the RGB component, hue (r, g) and lightness (l) are calculated by the following formula 1, threshold values are set for hue (r, g) and lightness (l), and A designated color region is defined as a set of pixels that satisfy the condition.
[Expression 1]
l = R + G + B
r = R / (R + G + B)
g = G / (R + G + B)
[0040]
Next, in step S205 (counting the number of areas (areas)), the designated color area number counting means 304 counts the number of pixels of the designated color area and outputs the designated color area number. The number of designated color areas is stored in the detection target designated color area number storage means 306.
[0041]
Next, in step S206 (quality determination), the quality determination unit 307 stores the specified color area number of the reference image stored in the reference specified color area number storage unit 305 and the detection target specified color area number storage unit 306. On the basis of the number of designated color areas of the inspection target image and the acceptable range (upper limit value and lower limit value) stored in the pass / fail judgment means 307, the pass / fail judgment output of the cover orientation is performed. The pass / fail judgment output is input by the alarm output means 4 and the stop signal output means 308 as shown in FIG.
[0042]
The alarm output means 4 immediately outputs an alarm when the pass / fail judgment output is a defective product (guru). This alarm continues to be output unless the alarm is canceled by, for example, pressing the error recovery 32 button switch. On the other hand, when the pass / fail judgment output is a non-defective product, the state is kept as it is. That is, the alarm output is continued when there is an alarm output, and no alarm is output when there is no alarm output.
[0043]
The stop signal output means 308 inputs a pass / fail judgment output, and outputs a stop signal for stopping the operation of the bookbinding machine that combines the text of the upper bookbinding and the cover when the determination of defective products continues for a predetermined number of times. By stopping the operation of the bookbinding machine that merges the text of the upper bookbinding and the cover by this stop signal, it is possible to prevent the occurrence of a large number of defective products even in a situation where the operator cannot respond for a while.
[0044]
Next, in step S207 (end), it is determined whether or not to end the operation. For example, when the operator operates the machine stop button switch 33 to stop the machine, the data processing process of the operation shown in FIG. 6 is ended in this first step after the operation. If there is no such end instruction input, the process returns to step S201 described above and the subsequent processes are repeated.
[0045]
【The invention's effect】
As described above, according to the cover page gluing detection apparatus of the first aspect of the present invention, a cover page gluing detection apparatus that can detect an error in the top and bottom of the cover sheet with high reliability is provided. In addition, according to the cover page gluing detection device of the second aspect of the present invention, the top and bottom of the cover sheet is not changed at all in the subsequent steps, so that it is possible to completely prevent the cover sheet from being turned upside down. Further, according to the cover page gluing detection apparatus of the third aspect of the present invention, since the imaging is performed in synchronization with the arrival signal of the cover page, high synchronization accuracy can be obtained. Further, when the text does not exist due to idle driving or the like, an erroneous determination is avoided without imaging. According to the cover glu detection device according to claim 4 of the present invention, it is possible to appropriately set the imaging region. According to the cover glu detection device according to claim 5 of the present invention, a defective cover is detected. When detected, an alarm is output. According to the cover page gluing detection device of the sixth aspect of the present invention, the operation of the bookbinding machine is automatically stopped when a defective cover guru is detected.
[Brief description of the drawings]
FIG. 1 is a pictorial diagram illustrating an example of a configuration of a cover guru detection device of the present invention.
FIG. 2 is a pictorial diagram showing an example of installation in a bookbinding machine that combines the text of the upper bookbinding and the cover.
FIG. 3 is a pictorial diagram showing an example of a processing process in a bookbinding machine that combines the text of the upper bookbinding and the cover.
FIG. 4 is a block diagram showing an example of the configuration of data processing means in the cover page gluing detection apparatus of the present invention.
FIG. 5 is a flowchart (part 1) illustrating a data processing process in the cover page gluing detection apparatus of the present invention.
FIG. 6 is a flowchart (part 2) illustrating a data processing process in the cover page gluing detection apparatus of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Image pickup means 2 Illumination means 3 Main body 4 of cover cover gluing detection device Alarm means 5 Arrival detection means 6 Imaging area setting means 7 Operation input means 31 Display monitor 32 Abnormal return button switch 33 Machine stop button switch 34 Setting / operation changeover switch 101 Full Text Feeder 102 Rounding part 103 Earing part 104, 106 Adhesive application part 105, 107 Back sticking part 108 Cover feeder 109 Cover sheet part 301 A / D conversion means 302 Image storage means 303 Designated color area extraction means 304 Designated color area number Counting means 305 Reference designated color area number storage means 306 Inspection object designated color area number storage means 307 Pass / fail judgment means 308 Stop signal output means 501 Text 502, 502a, 502b, 502c

Claims (6)

Imaging means for imaging the cover of the upper bookbinding and outputting an imaging signal;
Illuminating means for illuminating the imaging area of the imaging means;
A / D conversion (analog-to-digital converting) means for inputting the imaging signal and converting it into digital data to obtain a captured image;
Determination area setting means for setting a determination area in the captured image;
Designated color setting means for setting a designated color from among display colors in the determination area;
A designated color area extracting means for extracting a designated color area from the determination area based on the designated color;
A designated color area number counting means for counting the number of pixels of the designated color area and outputting the designated color area number;
The number of reference designated color areas, which is the number of designated color areas of the cover used as a judgment reference, is compared with the number of inspection target designated color areas, which is the number of designated color areas of the cover used as a judgment target, to determine whether the orientation of the cover is correct. Pass / fail judgment means for performing judgment output;
A cover guru detection device characterized by comprising: The cover sheet gluing detection apparatus according to claim 1 , wherein the imaging is performed at a part to which the cover is fed on a bookbinding machine that combines the text of the upper bookbinding and the cover. 3. The front cover gluing device according to claim 1 , further comprising arrival detection means for detecting that the cover has reached a predetermined position and outputting an arrival signal, wherein the imaging means is synchronized with the arrival signal. A guru detection device that performs the imaging. The cover guru detection device according to any one of claims 1 to 3 , further comprising an imaging area setting unit that sets the imaging area in which the illumination unit illuminates and the imaging unit performs imaging. apparatus. In Cover Guru detecting apparatus of claims 1 to 4, wherein the cover glue detection apparatus characterized by having an alarm output means for determining to input the quality determination output an alarm output when defective. In Cover Guru detecting apparatus according to any one of claims 1 to 5, a stop signal for outputting a stop signal for determining to input the quality determination output to stop the operation of the binding machine in the case of defective A cover sheet gluing detection device comprising an output unit.

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