An image exposure method for direct laser imaging

Abstract

The present invention discloses an image exposure method for a laser direct imaging device, comprising the following steps: N lasers of the laser direct imaging device expose a first image including N groups of image units on a photosensitive film, and each group of image units is composed of KN rows of images exposed by the corresponding laser; select the image unit with the least number of images from the N groups of image units as the first image unit; reserve an exposure area with the same size specification on the side of each group of image units of the photosensitive film, and the height of the exposure area does not exceed the height of the first image unit; the N lasers expose information content in the corresponding exposure area. The technical solution of the present invention can quickly find out the lasers with faults, which is beneficial to quickly repair or replace the lasers with faults.

Description

Technical Field

[0001] The present invention belongs to the field of laser direct imaging, and is particularly applicable to an image exposure method for laser direct imaging. Background Art

[0002] Reference Figure 1 , Figure 1 is a schematic diagram of N lasers arranged in a row on a crossbeam 10 which is one of the components on a laser imaging device (not shown). The crossbeam 10 moves under the control of a control mechanism (not shown) of the laser imaging device, driving the N lasers to expose a number of rows of images on the Figure 2 photosensitive film 20 shown. For example: Figure 1 The first laser in [] exposes K1 rows of images on the photosensitive film 20, the second laser exposes K2 rows of images on the photosensitive film 20, the third laser exposes K3 rows of images on the photosensitive film 20, the fourth laser exposes K4 rows of images on the photosensitive film 20... the Nth laser exposes KN rows of images. The sizes of K1, K2, K3, K4... KN can be the same or different. Further, the number of rows, position, exposure power, exposure sequence, and exposure time of the images exposed by each laser can be set to different values. After these N lasers have been used for a period of time, some lasers may have some faults, such as the output power of the laser decreasing, which causes the images of the corresponding rows exposed by this laser to also have defects. For example, assume that the power of the second laser decreases after being used for a period of time, resulting in the unqualified quality of the K2 rows of images exposed. However, since there is no relevant note information such as indicating that the K2 rows of images are exposed by the second laser on the photosensitive film 20, it is impossible to quickly find out through the photosensitive film 20 that the problematic K2 rows of images are the information exposed by the second laser. At the same time, other relevant information such as the exposure time and power of the second laser are not recorded on the photosensitive film 20, which is not conducive to quickly reverse-checking the faulty laser through the problematic images, greatly reducing the efficiency of troubleshooting. Summary of the Invention

[0003] The present invention provides an image exposure method for laser direct imaging, aiming to facilitate quickly reverse-finding the corresponding laser when the quality of the exposed images has problems by adding information content to the corresponding number of rows of images exposed by the laser.

[0004] The solution of the present invention is as follows:

[0005] An image exposure method for a laser direct imaging device, comprising the following steps:

[0006] N lasers of a laser direct imaging device expose a first image including N groups of image units on a photosensitive film, and each group of image units is composed of KN rows of images exposed by the corresponding laser;

[0007] Select the image unit with the fewest number of image rows as the first image unit;

[0008] Reserve an exposure area of the same size and specification on the side of each group of image units of the photosensitive film, and the height of the exposure area does not exceed the height of the first image unit;

[0009] The N lasers expose information content in the corresponding exposure area.

[0010] Further, the information content is stored in a computer in the form of a dot matrix diagram, and the computer controls the corresponding laser to expose the information content in the corresponding exposure area.

[0011] Further, the information content includes one or more of laser numbers, laser models, laser powers, and exposure times.

[0012] Further, each group of information content can be the same or different.

[0013] Further, the distance between every two adjacent rows of images in each group of image units is the same.

[0014] Further, the height of the first image is composed of the total image height included in N groups of image units.

[0015] Further, the side is located on the left or right of the image unit.

[0016] Further, the N groups of exposure areas are all located on the same side of the image.

[0017] Further, the format of the dot matrix diagram is one of bmp, dib, gif, png, rle, tif, ico, jpg, dds, and tga.

[0018] Advantages of the present invention: The technical solution of this patent application adds an exposure area on the same side of several rows of images exposed by each laser in the laser imaging device, and adds corresponding information content in the exposure area. This information content can be, for example: the serial number of the laser, the model of the laser, the exposure time, the number of image rows, and the exposure time. These contents are stored in the computer in the form of dot matrix images and are exposed and displayed on the photosensitive film by the corresponding laser as an information carrier for recording. After the laser imaging device has been used for a period of time, one or several of the N lasers may malfunction. For example, the output power decreases, and the exposure quality of the corresponding images exposed by it will also decrease. Since the information content of the corresponding laser is exposed on the photosensitive film, by observing the defective images, the malfunctioning laser or lasers can be traced back, which is beneficial for quickly repairing or replacing the malfunctioning laser or lasers. Description of the Drawings

[0019] Figure 1 Schematic diagram of N lasers arranged in a row on a crossbeam 10, which is one of the components on a laser imaging device (not shown);

[0020] Figure 2 Schematic diagram of the corresponding KN rows of images exposed by N lasers;

[0021] Figure 3 Schematic diagram of the exposure areas of the same size and specification selected on the side of several rows of images exposed by each laser;

[0022] Figure 4 Schematic diagram of the information content exposed in one of the exposure areas. Detailed Implementation Manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for description and distinction, and should not be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Reference Figure 2 , assume that the first laser of N lasers exposes K1 rows of images on the photosensitive film 20, the second laser exposes K2 rows of images on the photosensitive film 20, the third laser exposes K3 rows of images on the photosensitive film 20, the fourth laser exposes K4 rows of images on the photosensitive film 20... the Nth laser exposes KN rows of images on the photosensitive film 20. Define the KN rows of images exposed by each laser as an image unit. Therefore, there are a total of N groups of image units on the photosensitive film 20. The N numbers K1, K2, K3, K4... KN can have some values the same or be completely different. For example, among K1, K2, K3, and K4, the values of K1 and K3 can be the same or different. The values of K2 and K4 can be the same or different. Similarly, K1 and K2 can be the same or different. That is to say, among the N groups of image units exposed by N lasers, the number of image rows of the image units can be different from each other, or some can be the same and some different.

[0026] Select the smallest one from the above N numbers K1, K2, K3, K4... KN, that is, select the group of image units with the least number of image rows exposed by a single laser as the first image unit. Reference Figure 3 , assume that the third laser exposes the least number of image rows, and the total height of the image rows exposed by the third laser is h1. Select an exposure area 210 of the same size and specification on the side of each group of image units on the photosensitive film 20. The height of the exposure area 210 does not exceed the height of the first image unit, that is, does not exceed h1. The computer of the laser direct imaging device controls N lasers to expose corresponding information content in the corresponding exposure area of each group. Reference Figure 4The information content of the laser exposure in the exposure area includes but is not limited to: the laser number, the laser model, the laser power, the number of image rows of the group of image units and the exposure time, and may also include other content. In addition, the exposure information in each exposure area can be the same or different after being set by the computer. For example, the exposure information displayed in the exposure area corresponding to some lasers includes the laser power and the number of image rows exposed. Figure 4 For example, the content displayed in the exposure area 210 corresponding to the first laser may be: laser number: No. 1; exposure power: 10mj; exposure time: 2022.3.11.15:00; exposure line number: 20 lines. The exposure area 210 corresponding to the first laser may also be marked with other content. Similarly, the content marked in the exposure area 210 corresponding to the second laser may be, for example: laser number: No. 2; exposure power: 12mj; exposure time: 2022.3.11.15:10; exposure line number: 18 lines. In addition to these contents, other contents may also be included. It can be understood that the marked content in each exposure area 210 is equivalent to a memo, which can record various contents. It should be noted that the contents marked in the exposure area 210 are all pre-stored in the computer in the form of a dot matrix, and the content of the dot matrix is ​​transmitted to the corresponding laser, and the laser exposes the content of the dot matrix in the exposure area on the photosensitive film.

[0027] It should be noted that Figure 3 The N exposure areas 210 in the image can be located on the left side of the image or on the right side of the image. Each exposure area 210 records the relevant information of the corresponding image exposed by the corresponding laser. The relevant information is obtained by the corresponding laser exposing and displaying on the photosensitive resin. The format of the dot matrix is ​​one of bmp, dib, gif, png, rle, tif, ico, jpg, dds, and tga.

[0028] It should be noted that Figure 3 The N exposure areas 210 in the image need to be arranged on the same side of the image, so as to ensure the neatness and beauty of the exposed image.

[0029] Understandably, Figure 3 The spacing between each two adjacent rows of images in each group of image units is the same, thereby ensuring that the pixel values ​​at each location of the first image composed of N groups of image units are the same. This is because the pixel values ​​of each group of image units are the same, which ensures that the pixel values ​​at each location of the first image composed of all image units are the same.

[0030] When each laser exposes the content in the corresponding exposure area 210 and the corresponding number of rows of images, it can first expose the content in the exposure area 210 and then expose the corresponding number of rows of images. Or first expose the number of rows of images and then expose the content in the exposure area 210. The sequence is determined by computer programming.

[0031] In the technical solution of this patent application, by adding an exposure area to one side of the image exposed by each laser in the laser imaging device and adding corresponding content in the exposure area, such as: the number of the exposed laser, the model of the laser, the exposure time, the number of image exposure rows, and the image exposure time. This content is stored in the computer in the form of a dot matrix image and is exposed by the corresponding laser and displayed on the photosensitive film as an information carrier for recording. After the laser imaging device has been used for a period of time, one or several of the N lasers may malfunction. For example, the light output power decreases. Then the exposure quality of the corresponding image exposed by it will also decrease. Due to the recording of the exposure information of the corresponding laser, by observing the defective image, the malfunctioning laser or lasers can be traced back, which is beneficial for quickly repairing or replacing the malfunctioning laser or lasers.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An image exposure method for a laser direct imaging device, characterized in that, The steps include the following: N lasers of a laser direct imaging device expose a first image including N groups of image units on a photosensitive film, and each group of the N groups of image units is composed of KN rows of images exposed by a corresponding laser; Select the image unit with the least number of image rows as the first image unit; Reserve an exposure area of the same size specification on the side of each group of image units on the photosensitive film, and the height of the exposure area does not exceed the height of the first image unit; The N lasers expose information content in the corresponding exposure area.

2. The image exposure method according to claim 1, wherein The information content is stored in the computer of the laser direct imaging device in the form of a dot matrix diagram, and the computer controls the corresponding laser to expose the information content in the corresponding exposure area.

3. The image exposure method according to claim 1, wherein, The information content includes one or more of the laser number, laser model, light output power, and exposure time.

4. The image exposure method according to claim 2, wherein Each group of the information content is the same or different.

5. The image exposure method according to claim 1, wherein The spacing between every two adjacent rows of images in each group of the image units is the same.

6. The image exposure method according to claim 1, characterized in that The height of the first image is composed of the total image height included in the N groups of image units.

7. The image exposure method according to claim 1, characterized in that, The side is located on the left or right side of the image unit.

8. The image exposure method according to claim 1, wherein The N groups of exposure areas are all located on the same side of the image.

9. The image exposure method according to claim 2, wherein The format of the dot matrix diagram is one of bmp, dib, gif, png, rle, tif, ico, jpg, dds, and tga.

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