JPH0760259B2 - Opaque device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides a necessary light transmitting portion or a reflecting portion which is an image portion in a plate-making film or the like, or a portion which is not necessary for forming an image (non-image portion). The present invention relates to an opaque device for detecting and instructing all or a part other than an image part or an unnecessary part to a light shielding means to provide a light shielding layer.

[Prior Art] Conventionally, in the work of plate making, the work of shielding unnecessary light transmitting parts or reflecting parts (defective parts) caused by stains on the glue used, the base plate, and the exposure device. Alternatively, as a light-shielding method (opaque) for a plate-making film or the like, which is a work of dividing an image into colors, a mask sheet utilization method and a correction liquid application method are known. In the method of using a mask sheet, a peelable red layer or the like is formed on a polyethylene terephthalate film, cut out, and then cut out and attached to a plate making film to shield light. That is, in this method of using a mask sheet, the sheet is cut so as to fit the size of the plate-making film or the like to be shielded, and pin holes for registering both are provided and used for the work. This method of using a mask sheet is very simple, and by removing the red layer part by cutting it out while holding it in the register position with a pin hole for the required part such as the plate-making film, unnecessary light transmitting part or reflective part Can be shielded relatively quickly. However, most of the work to shield the light is manual work, the number of man-hours increases due to the use of the mask sheet material, the work difficulty of the mask sheet cutting and peeling work is high, and the light diffusion due to the thickness of the mask sheet causes the plate making. It has a drawback that the quality of originals, characters, etc., formed from films for films and the like is deteriorated.

On the other hand, the correction liquid application method uses a light shielding liquid (correction liquid) containing a light shielding agent such as carbon black in a vehicle. This method is superior to the mask sheet method in that the applied light-shielding layer is thin. The correction liquid can be applied by, for example, JP-A Nos.
7-6850 and 57-108853. These are excellent in that they enable the formation of a harder coating than conventional correction fluids and facilitate the visual judgment work of the coated part due to the matting effect, but work with a brush etc. Therefore, it is difficult to perform light-shielding work in a fine portion, and it is a time-consuming manual work, and it has a drawback that labor is required as light-shielding work.

As a light-shielding method other than the method of using the mask sheet or the method of applying the correction liquid, a method of applying a pre-colored adhesive tape to the light-shielding portion (masking tape) or a plate-making of light-shielding material such as paper that does not transmit or reflect light There is a method of sticking to a film for printing or photographic paper, etc.The light-shielding method by these sticking can achieve the light-shielding itself, but has a drawback that it requires labor for manual work, It cannot be modified, and only a small part has been applied to the actual plate making work.

That is, as a means for shielding an unnecessary light transmitting portion or a reflecting portion in a conventional plate-making film or the like, almost all must be done manually by an operator, and the improvements that have been studied so far are mostly a light shielding film. Reinforcement and response measures that can be applied to only a part.

Further, regarding the detection of an unnecessary portion of a plate-making film or the like, the conventional technique involves the detection by human eyes, and there are problems that it takes time and the skill of the operator. Unnecessary portions are generally pinholes or lines.
At present, not only are these unnecessary portions large in number, but much effort is required for detection.

Looking at the point of detecting unnecessary light-transmitting parts or reflective parts in plate-making films, etc., there have been conventional printed matter inspection devices or printed circuit board inspection devices, but these devices actually use a sample as a sample for inspection. Or electronically (electrically) a sample image input from a TV camera, etc.
The object to be inspected is achieved by holding it in the device by the storage means, and sequentially scanning the constituent images for each inspected product or performing comparison / verification with a sample sample by an appropriate method.

Although these devices have the advantage that inspection or setting of information for inspection can be performed quickly and stably and the production of printed matter can be rationalized, unnecessary light transmission parts or reflection parts of the plate-making film etc. For detection, there is no inspection sample, that is, the inspection sample cannot be used because it is a blockboard or the like. That is, there has been a demand for a device that shields unnecessary portions from light without requiring a standard sample.

In addition, we are also considering devices that attempt to automate the opaque work, as in JP-A-62-275265 and JP-A-63-32552, but require an inspection sample or the conventional correction liquid application. It is a device that is a work improvement, and is not necessarily an automated or simplified device.

Therefore, in consideration of the drawbacks of the conventional method, the present inventor previously developed and proposed a light-shielding device for plate-making work that shields an unnecessary light transmitting portion or a reflective portion of a plate-making film or the like (for example, Showa 63). Year patent application No. 99559). This newly proposed light-shielding device is a device that shields light except for a necessary light-transmitting portion or reflecting portion which is an image portion of an object such as a plate-making film or printing paper on which an image is formed. Means for detecting, means for conveying the object, means for exposing the conveyed object, means for receiving transmitted light or reflected light from the exposed object, and information from the light receiving means A means for storing a desired area of the object, a means for detecting an image portion or an unnecessary portion based on the information stored in the storage means, a means for detecting an object which has passed through the detecting means and is being conveyed,
And a means for blocking light other than the detected image portion or unnecessary portions, the automatic opaque device. With this device, opaque work is automated, which enables labor saving and quality stabilization.

[Problems to be Solved by the Invention] However, in this device, a heat-sensitive transfer material, which is a light-shielding material, is transferred to a portion other than a necessary light-transmitting portion or a reflecting portion, that is, a light-shielding target portion by a heat-sensitive transfer material to shield the light. Work is done. Then, after performing thermal transfer with the thermal head, peeling off the thermal transfer material from the target material, the transition of the thermal transfer material that seems to be caused by the type of the thermal transfer material and the target object such as the plate-making film and the transfer temperature. It may cause a phenomenon called burr, tailing, or omission, which results in poor grip. When these phenomena occur, the light-shielding material layer may not be provided at a position where the light-shielding material layer should not be provided, or conversely, may not be provided at a place where the light-shielding material layer should be formed. Therefore, there is a demand for development of a peeling device capable of favorably peeling the object and the heat-sensitive transfer material without causing burrs, tailing, omission, and the like. It is conceivable that the causes of the burr, the trailing, and the omission are the types of the object and the heat-sensitive transfer material, the transfer temperature, and the peeling angle between them.

The present invention has been made in view of the above circumstances, and it is possible to favorably separate an object from the heat-sensitive transfer material without causing burrs, tailing, omissions, and the like. It is an object of the present invention to provide an opaque device capable of highly accurately shielding light at a position.

[Means for Solving the Problems] In order to achieve this object, an opaque device of the present invention is a conveying device that conveys an image-formed plate-making film, a printing paper or the like, an image portion of the object or A detection device for detecting an unnecessary portion such as a pinhole, a light-shielding device for performing heat transfer by a heat-sensitive transfer body having a heat-sensitive transfer material that is a light-shielding material to an area other than the image portion of the object or an unnecessary portion, and the heat transfer. An opaque device having a peeling device for peeling the object from the heat-sensitive transfer body after performing, the peeling device having a peeling angle adjusting device for adjusting a peeling angle at which the object and the heat-sensitive transfer body are peeled off. It is characterized by that.

[Operation] When an object such as a plate-making film or printing paper has an unnecessary portion such as a pinhole or dirt, the object is supplied to the opaque device of the present invention and conveyed to the detecting device by the conveying device. It The detection device detects a necessary portion which is an image portion on the object or a portion such as a pinhole. next,
The object is superposed on the transfer body by the light-shielding device, and the heat-sensitive transfer body is thermally transferred to a part other than the image part of the target or an unnecessary part to shield the light. Finally, the object and the transfer body are separated. In the case of this peeling, the peeling angle between the object and the transfer body is adjusted by the peeling angle adjusting device.

The peeling angle is selected depending on the thermal transfer temperature, the type of thermal transfer material, and the like.

[Embodiment] Hereinafter, details of the present invention will be described with reference to the drawings illustrating an embodiment.

In FIG. 1, reference numeral 1 is an opaque device.

The opaque device 1 includes a transport device 2, a detection device 3, a light blocking device 4, and a peeling device 5. The peeling device 5 includes a peeling angle adjusting device 6.

The transport device 2 uses the three roller pairs 12, 13 and 14 to route the object 11.
It is arranged along 17. The roller pair 12, 13, 14 is a roller 15 driven by a driving means such as a pulse motor.
And a counter roller 16 which forms a nip with the roller 15 and conveys an object. However, in the conveying device 2, the drive source of the roller pairs 12, 13, 14 is not limited to the pulse motor, but may be a motor drive using a rotary encoder.

The detection device 3 has an exposure device 18. The exposure device 18 is an object
Located on one side of the path 17 of the object 11, the optical path changing mirror 21 and the light receiving device 22 are located on the opposite side of the path 17 of the object 11, and the light emitted from the exposure device 18 is transmitted through the object 11. , The light receiving device after the light path is changed by being reflected by the light path changing mirror 21
It is arranged so as to be incident on 22.

As the object 11 such as the plate-making film according to the present invention,
In addition to the plate-making film, negative or positive monochrome or color film, photographic paper, plate mount, etc. are exemplified.

The exposure device 18 may be any means capable of performing exposure with desired accuracy and obtaining information by the exposure. For example, a slit is provided between the light source and the object for exposure, or the light from the light source is sharp. Exposure with a desired width, and the like. The exposure device 18 is not particularly limited as long as it can emit light that can be received by the light receiving element, and for example, an LED array, a tungsten lamp, a fluorescent lamp,
A xenon lamp can be used.

As the receiving device 22, a commonly used light receiving element can be used. Various types of light receiving elements can be used. For example, CCD contact image sensor, photo multiplayer, photoconductive image pickup tube represented by vidicon,
Photodiodes, phototransistors, solar cells, etc. can be used. In particular, a CCD contact image sensor, such as Toshiba CIPS304MSI, is an excellent light receiving element because it can realize a high speed at which a plate-making film or the like passes through a preset detection portion.

Upon detection by the light receiving device 22, a lens system that is appropriately enlarged or reduced can be used as necessary, and the detection capability can be improved and the device can be simplified. Thus, the resolving power of the light receiving element, that is, the degree of detection of a necessary portion can be variously set depending on the combination with the lens system used.

Detection of pixels such as a plate-making film may be performed by using a plurality of light receiving elements, or by using a single or a plurality of light receiving elements and moving to receive transmitted light or reflected light. The operation of the light receiving device 22 is controlled by the detection controller 23. The output of the light receiving device 22 is input to the processing device 24. The treatment device 24 is an arithmetic device 25 (CPU),
It comprises a storage device 26, an auxiliary storage device 27 and an input device 28.

As the storage device 26 and the auxiliary storage device 27, information obtained by the light receiving device 22 is stored in a desired area of the object, and may be any writable and readable memory.

A computer can be used as the arithmetic unit (CPU) 25.

Further, the storage device 26 stores at the timing of an image scanner or the like and reads it at the timing of the light shielding device. Furthermore,
The data read from the storage device 26 at the timing of the shading device is converted into, for example, a control signal for the head of a thermal printer, which is an example of the shading device, and the pulse width is controlled to control the temperature of the thermal head.

The input device 28 is not particularly limited as long as it can input the pixel size, but a keyboard or the like can be used.

Detection of an image portion or an unnecessary portion of an object holds information by scanning, at least one scanning line or more is held by some means, and for example, a pixel which is not independent in three scanning lines is a light transmitting or reflecting portion. By setting in advance, detection becomes possible. Therefore, it is possible to determine the necessary portion by investigating and verifying the image information of one scan line or one or more scan lines by an appropriate method. In other words, in the image that is originally a necessary part, the pixels of the original image part do not exist independently, and those that exist independently are unnecessary parts. It can be judged from.

Further, in a unitary image, for example, a plate-making film or the like composed only of an image of a certain size such as a character, an unnecessary portion larger than the unitary image is a unity image when the unitary images continuously exist, that is, pixels are When it continuously exists in the unit image or more, it can be recognized as an unnecessary portion.

The original image portion of the plate-making film or the like is a continuous one, and in the printing plate made from the plate-making film or the like, it is a halftone dot, but in rough terms, it is a plate-making film or Pixels on printing paper or the like correspond to halftone dots on a printing plate.

The determination in the detection may be examined and verified by 4-connection or 8-connection of pixels by a simple computer process. By this connection method, it is possible to detect pixels that are necessary light transmitting portions or reflecting portions of a plate-making film or printing paper. Of course, the determination may be made by other methods.

As the detection means according to the present invention, there are a case of detecting a part that is an original image and a case of detecting an unnecessary part. However, in the case of detecting an image part, as compared with the case of detecting an unnecessary part, There is an advantage that the storage capacity is small. In general, the proportion of the image portion of the plate-making film is smaller than that of the non-image portion, and the detection target is larger than the pinhole, etc. Therefore, the detection means according to the present invention has a storage capacity of 1/5 to 1
/ 20 can be done.

As the shading device 4, a thermal transfer printer 31 for shading based on the position information can be used. As shown in FIG. 2, the thermal transfer printer 31 has a thermal head 32 and a thermal transfer body 33 as main components. Based on the position information, the thermal head 32 of the thermal transfer printer 31 is instructed to shield the light-shielding layer. Forming 47. In other words, the thermal transfer member 33 in which the thermal head 32 carries the light shielding material according to the position information.
The object 11 is provided with a light-shielding layer 47 composed of the light-shielding material. Reference numeral 34 denotes an unwinding roller for supplying the heat-sensitive transfer body 33, and 35 denotes a take-up roller for winding up the used heat-sensitive transfer body 33. The roller 36 is a constituent member of the transport device 2 and also serves as a platen for the thermal transfer printer 31.

As the heat-sensitive transfer member 33, a transfer material containing a pigment or dye and a heat-meltable film forming material and capable of heat transfer at about 50 to 130 ° C. is provided on a support. The pigment or dye satisfies the light-shielding condition in an exposure operation which is a post-process using a plate-making film or printing paper. The heat fusible film forming material includes wax or other materials.

A path 40 of the heat-sensitive transfer body 33 is formed between the unwinding roller 34 and the take-up roller 35, and the back tension roller 37, the heat-sensitive transfer printer 31, and the conveying roller pair are formed along the path 40.
38 is provided.

The thermal transfer printer 31 has a holder 41, and a thermal head mounting frame 42 is rotatably mounted on the holder 41 by a shaft 43.

The thermal head 32 is fixed to the tip of the thermal head mounting frame 42. A thermal head pressing spring 44 is attached to the holder 41, and the thermal head pressing spring 44 presses the thermal head 32 toward the platen roller 36. A cam follower 45 is attached to the holder 41, and the cam follower 45 is in contact with the cam 46. Therefore, the holder 41 is oscillated and displaced according to the rotation angle of the cam 46, and approaches the platen roller 36 and separates from it.

The object 11 and the thermal transfer member 33 are supplied and superposed on the entrance side of the platen roller 36, the thermal head 32 is heated by the position information, the thermal transfer material is melted by the thermal head 32, and the thermal transfer member 33 senses it. The thermal transfer material is transferred to a portion other than the detected image portion of the target object 11 or an unnecessary portion to form the light shielding layer 47. The light-shielding layer preferably has the necessary resistance in the work environment that the plate-making film or the like receives after being transferred or imparted to an unnecessary portion of the plate-making film or the like, and a light-shielding layer suitable for each work environment is selected. be able to. Peeling device on the exit side of the platen roller 36
The object 11 and the heat-sensitive transfer body 33 are separated from each other by 48.

The peeling device 48 comprises a film guide roller 51 and a transfer body guide roller 52. The film guide roller 51 guides the object 11 to determine its traveling direction, and the transfer body guide roller 52 makes the thermal transfer body 33. To guide you in determining its progress. However, in this embodiment, the platen roller 36 also serves as the film guide roller 51.

The angle θ between the object 11 and the thermal transfer member 33 on the exit side of the platen roller 36 (film guide roller 51) is the peeling angle, and this angle θ affects the quality of the opaque as described above. is there. The peeling angle θ is adjusted by the peeling angle adjusting device 6. Peeling angle adjustment device 6
Has a long hole 53 in the holder 41, the shaft 54 of the transfer body guide roller 52 is displaceably fitted in the long hole 53, and by selecting the fixing position of the shaft 54 in the longitudinal direction of the long hole 53. The position of the transfer member guide roller 52 changes, and the isolation angle θ can be adjusted by this.

In addition, as the adjustment of the peeling angle, there are means for changing the position of the roller in contact with the object, means for changing the position of the roller in contact with the heat-sensitive transfer material, or both means. To adjust the peeling angle, adjust the angle from 10 to 90 degrees,
It is necessary to be able to adjust preferably in the range of 20 to 60 °. As the adjustment stage, for example, the adjustment can be made every 1 degree, every 5 degrees, every 10 degrees.

By this angle adjustment, it becomes possible for one device to cope with a change in the type of the thermal transfer material, a change in the type of the object, and the like.

After the transfer using the thermal transfer member 33 is performed, the static electricity of the target object 11 is removed by bringing the conductive roller 65, which is an example of the static charge removing unit, into contact with the target object 11 at the transport speed. It In addition, detectors 62, 63, 64 are provided on the inlet side and the outlet side of the roller pair 12 and the inlet side of the thermal transfer printer 31.
Is provided. Detectors 62, 63, 64 are objects in path 17.
Detects 11 by means of a combination of a small light source and a phototransistor to block light from the object, a means to activate the microswitch by touching it, or an object to push the roller to activate the microswitch. Means, etc.

The operation of the opaque device configured as described above is as follows.

The object 11, which is a plate-making film, is inserted into the entrance 61 of the opaque device 1. When inserted, the detector 62 detects the object 11 and the conveyance by the conveyance device 2 is started.
It should be noted that the drive for carrying can be always operated after the power is turned on, but preferably the carrying is started from the insertion of the object 11. The conveyed object 11 is detected by the detector 63 and generates a reference signal for determining the position of the object 11 required for the subsequent operation. Although the two detectors 62 and 63 are used here, it is also possible to combine the two detectors into one. The detection by the detector 63 has a function for positioning. That is, the detection start information can also serve as a reference for position information by the next exposure, light reception, and detection. It should be noted that a mark indicating the reference position provided in advance on the object may be used.

The exposure device of the detection device 3 for the object 11 being conveyed
Exposure is performed at 18. The exposure device 18 includes an illumination light source and a slit.

Light from the object 11 (in FIG. 1, transmitted light is shown,
The reflected light may of course be used), and is incident on the light receiving device 22.

The object 11 that has passed through the exposure device 18 is detected by a detector 64 provided in front of the light shielding device 4. This detection also serves as a reference for determining the light shielding position.

Information from the detection by the detector 63 serves as a reference, and the position of the detected image information can be automatically set based on the reference based on the transport distance or the transport speed. That is, the distance from the start point by the detector 63 can also be obtained, this position information is stored, and the coordinate information of the object 11 from the detector is combined and input to the light shielding device 4 in advance. Light can be shielded without performing positioning. By the detection by the detector 64 provided in front of the light shielding device 4, it is possible to automatically process from the reference information and the detected position information. It should be noted that the distance between the detector 63 and the exposure location and the distance between the detector 64 and the light shielding device 4 do not necessarily have to be the same. An arithmetic device for performing these operations and processes
25, and is stored in the storage device 26 and the auxiliary storage device 27. That is, the exposure device 18 is operated by an instruction from the detection controller 23 via the arithmetic device 25 based on the size input from the input device 28 to the arithmetic device 25 and the detection pitch. The image information of the object 11, which is the information from the detection device 3, is sequentially stored in the storage device 26 under the control of the arithmetic device 25. In addition, in the device according to the present invention, the arithmetic device 25 is not always essential, and in some cases, the arithmetic device 25 may not be provided.

When the amount of information stored in the storage device 26 reaches three lines in the direction perpendicular to the conveying direction, the information of four connected pixels is compared by a comparator (not shown), and a necessary character or pattern is predetermined. Determined by value. When it is determined as a necessary part by this comparison-determination, the corresponding coordinate information is stored in the auxiliary storage device 27.

In the device of the present invention, the detection pitch can be set in advance for each pixel or every other pixel.

The number of pixels referred to for the determination may be the same, for example
When a character or the like to be detected becomes large, the number of coarse pixels, that is, the number of pixels per character or the like may be the same as that in the case of detecting a small character. Even if the size is different from the normal size, the processing time required for detection and light shielding is the same as in the normal case. That is, the processing time or the like does not change regardless of whether a small image unit (image, character, etc.) or a large image unit. That is, the number of pixels to be referred to is the same.

Further, in the present invention, the size of the pixel can be set in advance, but the size of the character or the like forming the image, such as series or points, is compared with the character or the like of the plate-making film that is normally processed by visual inspection. However, the present invention is not necessarily limited to these, and the keyboard size can be used to input the pixel size and the detection pitch. For normal characters, the pixel size may be about 400 μm. Further, in the image detection, the exposure intensity and the periodic change of the exposure intensity can be set, and this exposure change condition is effective in speeding up the detection and identification of the necessary portion. The pixel size and detection pitch are input from a keyboard or the like. The input size is set in the detection device 3 via the calculation device 25. The setting of the pixel size in the present invention is calculated by the arithmetic unit 25 based on the size input from the keyboard. Furthermore, arithmetic unit
With 25, you can change the reference pitch and remember the size. Usually, the detection is performed by changing the detection pitch (width) of the opaque device.

As an example of changing the detection pitch, the input device 28 can be used to set the detection pitch, and the calculation device 25 can be used for calculation.

In addition, the change of the exposure condition in the detection device is mainly due to the change of the exposure intensity in the time (conveyance of the object), and the difference of the detection degree for the detection element such as the pinhole due to the change of the brightness of the light source. It has the effect of causing it. That is, the detection threshold of the detection element is determined by the intensity and time of the light entering the detection element, but changing (dimming) the exposure intensity according to preset conditions uses this intensity and time. Therefore, it is easier to determine the original image such as the pinhole and the character.

The detected image portion is held in the storage device as position information, and the portion other than this position, that is, the position of the non-image portion is shielded. When shading, the image portion and the non-image portion can be accurately divided, and the light can be shaded according to this division, but since the image of the plate-making film or the like often needs sharpness, the image is a necessary portion. It is preferable that the portion is thickened, and by extension, the light-shielding portion that is the non-image portion is slightly thinned to shield the light. For this operation, for example, the brightness gradient of 4 pixels is verified, or the Laplacian value of 9 pixels is verified, and if the absolute value of 4 pixels is positive and the Laplacian value is negative, for example, it is verified. Since there is an edge of the required pixel at the center position of the required pixel, it is possible to increase the thickness by setting the required number of pixels around the required pixel by a predetermined number.

Next, the object 11 that has reached the light-shielding device 4 is superposed on the heat-sensitive transfer body 33 by the platen roller 36. At this time, the holder 41 is displaced (displaced counterclockwise in FIG. 2) by the operation of the cam 46, and the elastic pressing force of the thermal head pressing spring 44 acts to press the thermal head 32 against the platen roller 36. The heat-sensitive transfer member 33 and the object 11 which are overlapped with each other are sandwiched. The thermal head 32 is arranged at a right angle to the carrying direction, and the thermal head 42 is heated by the result of the logical product of the position information of both objects 11 in the auxiliary storage device 27, the transfer body is thermally melted, and the object 11 A light-shielding layer is formed on the detected unnecessary portion above.

After the formation of the light-shielding layer is completed, the heat-sensitive transfer body 33 and the object 11 which are overlaid are sent out from the light-shielding device 4 and enter the peeling device 5. In the peeling device 5, the object 11 is a film guide roller.
Guided by 51 toward roller pair 14, while thermal transfer material
33 is a take-up roller guided by the transfer body guide roller 52.
Head to 35. In this way, the object 11 and the thermal transfer member 33 are guided in different directions by the peeling angle θ, and the two are peeled off. When adjusting the peeling angle, the shaft 54 is moved in the longitudinal direction of the long hole 53 formed in the holder 41 to change the position of the heat-sensitive transfer member guide roller 52. As a result, the transport direction of the thermal transfer member 33 changes and the peeling angle changes.

[Effects of the Invention] In the opaque device of the present invention, an image (necessary portion) formed is detected to shield an unnecessary light transmitting portion or a reflecting portion of the plate-making film or the like, and the other portion,
In other words, focusing on the fact that unnecessary portions can be shielded from light, or by detecting unnecessary portions such as pinholes and blocking this unnecessary portion, the conventional mask sheet use method or correction liquid application method Compared to, it is possible to perform plate making (opaque) easily, quickly and accurately, and it is possible to work without the need for an expert.

The detection device stores information from transmitted light or reflected light of a desired region of the object, performs detection by comparing adjacent pixels at a detection pitch according to a pixel unit based on the obtained information, and By detecting an object provided in front of the light shielding device, light can be shielded without setting a reference position in advance.

Particularly importantly, in the present invention, even if the thermal transfer temperature, the type of the thermal transfer material, etc. are changed, the phenomenon of burr, tailing, and omission due to the adjustment of the peeling angle does not occur, and a good result is obtained. Enables opaque work. In addition, Bali,
It is considered that the phenomena called tailing and pulling out are considerably influenced by the peeling angle.

After detection of the necessary light-transmitting portion or reflecting portion by the detection device, a light-shielding layer can be immediately provided on the plate-making film or the like except for this portion. Generally, the detecting means and the light shielding means are separated. Therefore, without causing misalignment,
You need to block light. It is desirable to be able to shield light without performing positioning in advance, that is, pre-processing up to detection, accumulating the detected position in any means, and performing alignment or registration, without interruption. This is a necessary method for the converted processing.

In the present invention, the distance or the position of the portion to be shielded from the detection of the object can be automatically determined by the object detection means and the detection means from the transportation distance and / or the transportation speed. Further, by the detection means provided in front of the light shielding means, from the distance or position already obtained,
The distance or position to start the light blocking is automatically determined,
The light can be shielded without any special processing such as alignment.

To detect the necessary light transmission part or reflection part in the plate-making film, etc., and to provide a light-shielding material other than this part,
Alternatively, in order to detect an unnecessary portion and provide a light-shielding material in this portion, the steps from detection to position determination must be completed before the plate-making film or the like to be detected passes and reaches the light-shielding layer providing means. However, as long as the portion to be shaded does not arrive, the type of process such as a computer used and the processing speed of a processing language (eg, assembler) used are not limited.

The plate-making film and the like shielded from light by the heat-sensitive transfer material according to the present invention has good adhesiveness and abrasion resistance of the light-shielding layer and is completely shielded from light. Therefore, even in the post-process, peeling or the like does not occur even in the same handling as the conventional light-shielding work.

The configuration of this opaque device includes a means for detecting the presence of an object, a means for conveying the object, a means for exposing the conveyed object, a light receiving means, a storage means, a detecting means, a detecting means, a light shielding means. In addition to the above-described configuration, an integrated device including these means may be used as long as the device has the above-described configuration. For example, a device including the detection means or the detection means, and the detection means and the light shielding means may be combined. Further, a device including each means may be combined. If necessary, the pixel size and the detection pitch may not be set in advance, but may be determined each time by an input means for changing them. Although the pixel size is usually determined by the light receiving element, it may be changed, or simply adjusted in multiples of the size of the light receiving element. Further, the detection pitch can be detected for each pixel or every several pixels. The detection pitch may be fixed or may be variable.

[Brief description of drawings]

FIG. 1 is a schematic side explanatory sectional view of an opaque device showing one embodiment of the present invention, and FIG. 2 is an enlarged side structural explanatory view of a thermal transfer portion. 1 ... Opaque device, 2 ... Conveyor device, 3 ... Detection device, 4 ... Shading device, 5 ... Peeling device, 6 ... Peeling angle adjusting device, 11 ... Object, 12, 13, 14 ... … Roller pair, 15 …… Roller, 16 …… Counter roller, 17 …… Path, 18 …… Exposure device, 21 …… Optical path changing mirror, 22 …… Light receiving device, 23 …… Detection controller, 24 …… Processing Device, 25 ... Computing device (CPU), 26 ... Storage device, 27 ... Auxiliary storage device, 28 ... Input device, 31 ... Thermal transfer printer, 32 ... Thermal head, 33 ...
… Thermal transfer body, 34 …… Unwind roller, 35 …… Takeup roller, 36 …… Platen roller, 37 …… Bank tension roller, 38 …… Conveying roller pair, 40 …… Path, 41 …… Holder, 42 ...... Thermal head mounting frame, 43
…… Axis, 44 …… Thermal head pressing spring, 45 …… Cam follower, 46 …… Cam, 47 …… Shading layer, 48 …… Peeling device, 51 …… Film guide roller, 52 …… Transfer body guide roller , 53 …… slot, 54 …… shaft 61 …… inlet, 62, 63, 64 …… detector, 65 …… conductive roller

Claims (2)

[Claims] 1. A transporting device for transporting an image-formed plate-making film, an object such as photographic paper, a detection device for detecting an image portion of the object or an unnecessary portion such as a pinhole, and an image of the object. A heat-shielding device having a heat-sensitive transfer material, which is a light-shielding material, on a portion other than a portion or an unnecessary portion, which shields light by performing heat transfer with a heat-sensitive transfer member, and a peeling device for peeling the object and the heat-sensitive transfer member after performing the heat transfer. An opaque device, wherein the peeling device has a peeling angle adjusting device for adjusting a peeling angle at which the object and the heat-sensitive transfer body are peeled off from each other. 2. The peeling angle adjusting device is configured such that a vertical position of a roller provided in the rear of the thermal head in contact with the thermal transfer body is variable in the traveling direction of the thermal transfer body. The opaque device according to claim 1.