Laser printing equipment

Abstract

The invention provides laser printing equipment. The laser printing apparatus includes: an input interface for setting a printing pattern on a setting plane; a first selection unit for displaying a plurality of different types of materials on the display unit and selecting one of the materials; a second selection unit for displaying a plurality of different types of laser printing methods corresponding to the type of workpiece on a display unit based on the type of material selected by the first selection unit, and selecting any one of the methods; and a printing condition setting unit for setting a printing condition for printing the printing pattern on the workpiece of the material type by the laser printing method based on the printing pattern set by the input interface, the type of the material selected by the first selection unit, and the type of the laser printing method selected by the second selection unit.

Description

Technical Field

[0001] The present disclosure relates to a laser printing device. Background Art

[0002] Japanese Patent Laid-Open No. 2012-148307 discloses a laser marking device including a printing condition setting device as an example of a laser printing device. Specifically, the printing condition setting device disclosed in Japanese Patent Laid-Open No. 2012-148307 generates a plurality of printing conditions by changing two of the printing parameters constituting the printing conditions of the laser (such as the scanning speed of the laser and the laser output, etc.). The laser marking device according to Japanese Patent Laid-Open No. 2012-148307 performs a plurality of printings based on the respective printing conditions and enables a user to select a desired printing result.

[0003] According to Japanese Patent Laid-Open No. 2012-148307, printing parameters can be set to appropriate values ​​by determining a set of printing parameters corresponding to a desired printing result.

[0004] Incidentally, it is considered that appropriate printing conditions may vary depending on the type of material of a printing object and the type of laser printing method.

[0005] Therefore, a method is considered in which a user selects one candidate from a plurality of different candidates each having a set of the type of material and the type of laser printing method, and sets the printing condition according to the selection.

[0006] However, in the case of the method described above, it is assumed that the number of candidates increases excessively as the types of materials and laser printing methods increase. For example, in the case where there are 10 types of materials and there are 5 types of laser printing methods, the number of candidates is 10×5=50. If the number of candidates increases excessively, the usability of the laser printing apparatus is impaired, which is disadvantageous. Summary of the invention

[0007] The present disclosure has been made in view of such a point, and an object of the present disclosure is to appropriately set printing conditions without impairing the usability of the laser printing apparatus.

[0008] According to one embodiment of the present disclosure, a laser printing device includes: a laser output unit for generating laser light based on excitation light and outputting the laser light; and a laser scanning unit for irradiating a printing object with the laser light output from the laser output unit and performing a two-dimensional scan in a printing area on a surface of the printing object, wherein the laser printing device controls the laser output unit and the laser scanning unit to print a predetermined printing pattern in the printing area.

[0009] According to one embodiment, the laser printing device includes: a display unit for displaying a setting plane corresponding to the printing area; a print pattern setting unit for setting the print pattern on the setting plane displayed on the display unit; a first selection unit for displaying multiple different types of materials forming the print object on the display unit, and selecting any type based on user operation; a second selection unit for displaying multiple different types of laser printing methods corresponding to the type of print object on the display unit based on the type of material selected by the first selection unit, and selecting any laser printing method based on user operation; and a print condition setting unit for setting a print condition for printing the print pattern on a print object of the type of material by the laser printing method based on the print pattern set by the print pattern setting unit, the type of material selected by the first selection unit, and the type of laser printing method selected by the second selection unit.

[0010] According to one embodiment, the laser printing device causes a first selection unit to select a type of material, then displays a plurality of different laser printing methods corresponding to the type on a display unit, and causes a second selection unit to select one of the laser printing methods. As a result, options can be displayed in stages, and the number of options displayed on the display unit at the same time can be reduced. This is effective in ensuring the usability of the laser printing device. In addition, there is no change in selecting each of the material type and the laser printing method type, and thus the printing condition can be appropriately set. In this way, the printing condition can be appropriately set without impairing the usability of the laser printing device.

[0011] In addition, according to another embodiment of the present disclosure, the laser printing device may further include: a method storage unit for storing one or more of a black shaving method, a white shaving method, a gloss method 1, a gloss method 2, a deep engraving method, and a shallow engraving method in association with each other as the laser printing method selected by the second selection unit for each type of material selected by the first selection unit, and the second selection unit may display on the display unit multiple laser printing methods corresponding to the type of material selected by the first selection unit based on the content stored in the method storage unit.

[0012] Another embodiment facilitates appropriate setting of printing conditions.

[0013] In addition, according to another embodiment of the present disclosure, the laser printing device may further include: a third selection unit, used to display the print quality in the laser printing method selected by the second selection unit as multiple different quality levels on the display unit, and select any quality level based on user operation, and in addition to the print pattern set by the print pattern setting unit, the type of material selected by the first selection unit, and the type of laser printing method selected by the second selection unit, the print condition setting unit can also set the print condition based on the quality level selected by the third selection unit.

[0014] According to still another embodiment, the printing conditions may be more appropriately set by further considering the quality level in addition to the type of material and the type of laser printing method.

[0015] In addition, according to another embodiment of the present disclosure, the laser printing device may further include: a printing time calculation unit, which is used to calculate the printing time required to print the printing pattern set by the printing pattern setting unit on the printing object of the type selected by the first selection unit for each laser printing method that needs to be selected by the second selection unit, and the second selection unit can display a plurality of different laser printing methods on the display unit, and display the printing time calculated by the printing time calculation unit in association with each laser printing method displayed on the display unit.

[0016] According to another embodiment, since the printing time is displayed in association with each laser printing method, even a user who is not used to laser printing can set the printing conditions to fall within the desired printing time. As a result, the usability of the laser printing device can be improved.

[0017] In addition, according to another embodiment of the present disclosure, the laser printing device may further include: an image storage unit for storing at least one of a preview image and a diagram for showing each laser printing method that needs to be selected by the second selection unit, and the second selection unit can display a plurality of different laser printing methods on the display unit, and based on the content stored in the image storage unit, display at least one of the preview image and the diagram in association with each laser printing method displayed on the display unit.

[0018] According to another embodiment, since at least one of the preview image and the illustration is displayed in association with each laser printing method, even a user who is not used to laser printing can set printing conditions to achieve a desired appearance. As a result, the usability of the laser printing device can be improved.

[0019] In addition, according to another embodiment of the present disclosure, the printing condition setting unit can generate multiple different printing conditions by setting two parameters of the multiple different parameters constituting the printing conditions as variable parameters, setting the remaining parameters as fixed parameters and changing the variable parameters, and for each laser printing method that needs to be selected by the second selection unit, select the variable parameters corresponding to the laser printing method.

[0020] According to yet another embodiment, variable parameters can be automatically selected in association with each laser printing method. As a result, parameters can be searched more efficiently when further adjusting printing conditions. Thus, the usability of the laser printing device can be improved.

[0021] As described above, according to the present disclosure, it is possible to appropriately set printing conditions without impairing the usability of the laser printing apparatus. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a diagram showing the overall configuration of a laser printing system;

[0023] Figure 2 is a block diagram showing a schematic configuration of a laser printing apparatus;

[0024] Figure 3 is a flowchart showing processing related to setting of printing conditions;

[0025] Figure 4 is a table showing materials of workpieces and laser printing methods that can be selected according to the respective materials;

[0026] Figure 5 is a table showing printing conditions according to respective laser printing methods;

[0027] Fig. 6A is a diagram showing a screen displayed on a display unit;

[0028] Figure 6B is a diagram showing a screen displayed on a display unit;

[0029] Figure 6C is a diagram showing a screen displayed on a display unit;

[0030] Fig.6D is a diagram showing a screen displayed on a display unit;

[0031] Fig. 6E is a diagram showing a screen displayed on a display unit;

[0032] Fig. 6F is a diagram showing a screen displayed on a display unit;

[0033] Figure 6Gis a diagram showing a screen displayed on a display unit;

[0034] Figure 6H is a diagram showing a screen displayed on a display unit;

[0035] Fig.6I is a diagram showing a screen displayed on a display unit;

[0036] Figure 6J is a diagram showing a screen displayed on a display unit; and

[0037] Figure 7 is with Fig. 6E The following is a diagram showing a modified example of the display screen. DETAILED DESCRIPTION

[0038] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. Note that the following description is given as an example.

[0039] Although laser printing using laser will be described in this embodiment, the present disclosure can be applied to marks other than characters such as marks of graphics that are not related to the term "printing". In addition to marks of graphics such as ":" and "×", marks other than characters include marks of two-dimensional codes such as bar codes and QR codes (QR code, registered trademark).

[0040] In the following description, instead of the term "laser printing", this is sometimes referred to as "marking", "processing" or simply "printing".

[0041] <Overall Configuration>

[0042] Figure 1 is a diagram showing the overall configuration of a laser printing system S, and Figure 2 is a diagram showing a schematic configuration of a laser printing apparatus L in a laser printing system S. Figure 1 The laser printing system S shown includes a laser printing device L and an external apparatus 400 connected thereto.

[0043] in, Figure 1 and Figure 2 The illustrated laser printing apparatus L is configured to print a predetermined print pattern Pp in a print area R1 by controlling a laser output unit 2 and a laser scanning unit 4 which will be described later.

[0044] Note that here, Figure 1 As shown, the printing area R1 is an area provided on the surface of the workpiece W as an object to be printed, and is Figure 1 For example, in Figure 1In FIG. 3 , the print area R1 is configured as a rectangular area. In addition, the setting plane R2 herein corresponds to a virtual plane that can be displayed on the display unit 301 of the operation terminal 300 .

[0045] The laser printing device L is configured to perform printing by irradiating the workpiece W with the laser light generated in the print head 1 and performing three-dimensional scanning on the surface of the workpiece W. Note that here, "three-dimensional scanning" indicates a concept collectively referred to as a combination of a two-dimensional operation (so-called "two-dimensional scanning") of scanning the irradiation position of the laser light on the surface of the workpiece W and a one-dimensional operation of adjusting the focal position of the laser light. Note that three-dimensional scanning is not essential. It is sufficient that the laser printing device L is capable of at least two-dimensional scanning.

[0046] In particular, the laser printing device L according to the present embodiment can emit a laser having a wavelength included in the near infrared (NIR) wavelength range (for example, a wavelength of about 1064 nm) as a laser for printing on the workpiece W. This wavelength corresponds to the near infrared (NIR) wavelength range. Of course, lasers having other wavelengths can be used for printing on the workpiece W. In addition, in the following description, the laser used for printing on the workpiece W is sometimes referred to as a "printing laser" to distinguish it from other lasers.

[0047] like Figure 1 and Figure 2 As shown, the laser printing device L according to the present embodiment includes a print head 1 , a print controller 100 , a connection cable 200 , and an operation terminal 300 .

[0048] Among them, the print controller 100 may set settings related to the print pattern Pp (eg, print conditions for printing a desired print pattern Pp), and is configured as a controller configured to control the print head 1 .

[0049] In addition, the print head 1 may emit a laser beam for printing toward the print area R1 by being controlled by the print controller 100 .

[0050] In the present embodiment, the print head 1 and the print controller 100 are separated from each other, and are electrically and optically connected through a connection cable 200. The connection cable 200 is configured using, for example, at least one of an electric wiring and an optical fiber cable.

[0051] More generally, one of the print head 1 and the print controller 100 may be incorporated into the other to be integrated. In this case, the optical fiber cable or the like may be appropriately omitted.

[0052] In addition, the operation terminal 300 includes, for example, a central processing unit (CPU) and a memory, and is connected to the print controller 100 so as to be able to transmit and receive electric signals in a wired or wireless manner.

[0053] Note that in the present embodiment, the operation terminal 300 is configured using a personal computer such as a desktop computer or a laptop computer, but the present disclosure is not limited to such a configuration. For example, the operation terminal 300 may be configured using a dedicated terminal such as a touch panel console that can be connected to the laser printing device L. In addition, for example, the operation terminal 300 may also be incorporated into the print controller 100.

[0054] The operation terminal 300 is used as a terminal configured to set various printing conditions and indicate information related to laser printing to the user. The operation terminal 300 includes: a display unit 301, which is configured to display information to the user; an operation unit 302, which is used to receive an operation input from the user (hereinafter referred to as "user operation"); and a storage device 303, which is configured to store various types of information.

[0055] The display unit 301 can display the setting plane R2 corresponding to the printing area R1. Figure 1 As shown, an input interface Iu for receiving an input of a printing pattern Pp is arranged on the setting plane R2. The input interface Iu includes a user interface such as a frame for indicating the range of the setting plane R2 and a graphic for indicating the position of the printing pattern Pp on the setting plane R2. The input interface Iu can receive the input of the printing pattern Pp based on the user operation and display the content of the received printing pattern Pp on the setting plane R2.

[0056] The input interface Iu is an example of a “print pattern setting unit” in the present embodiment in terms of being able to set a print pattern Pp on the setting plane R2.

[0057] Specifically, the display unit 301 is configured using, for example, a liquid crystal display or an organic EL panel. When the operation terminal 300 is incorporated in the print controller 100 or a touch panel console is used, a display screen provided on the print controller 100 or the console may be used as the display unit.

[0058] The operation unit 302 may be configured using a keyboard and a pointing device. Here, the pointing device includes a mouse or a joystick, etc. When the operation terminal 300 is incorporated in the print controller 100 or a touch panel console is used, switches or buttons, etc. provided in the print controller 100 or the console may be used as the operation unit.

[0059] The operation terminal 300 configured as described above can set the print pattern Pp to be printed on the workpiece W and the printing conditions for printing the print pattern Pp based on the user operation on the input interface Iu.

[0060] The printing condition may be one or a combination of more than one of laser power, scanning speed, Q-switch frequency, defocus amount (spot variable value), number of prints, and scanning line interval.

[0061] Here, the laser power is the target output of the printing laser. The scanning speed is the scanning speed of the printing laser on the workpiece W. The defocus amount indicates the size of the deviation of the focal position of the printing laser from the surface of the workpiece W in the height direction. When the defocus amount is set to a non-zero value, the spot diameter of the printing laser can be changed. The number of prints indicates the number of times each line element is repeatedly scanned when the print pattern Pp is decomposed into a plurality of line elements. The scanning line interval indicates the interval between the scanning lines constituting each line element (particularly, the interval in a direction orthogonal to the scanning direction).

[0062] The print pattern Pp and print conditions set by the operation terminal 300 are output to the print controller 100 and stored in the storage unit 101 of the print controller 100. Hereinafter, the combination of the print pattern Pp and the print conditions is referred to as “print setting.” The storage device 303 of the operation terminal 300 can store print settings as needed.

[0063] like Figure 2 As shown, a print condition setting unit 104 configured to define print conditions in print settings is interposed between the operation terminal 300 and the storage unit 101. The print condition setting unit 104 performs processing related to setting of print conditions. Details of the print condition setting unit 104 will be described later.

[0064] The external device 400 is connected to the print controller 100 as needed. Figure 1 In the illustrated example, a conveying speed sensor 401 and a programmable logic controller (PLC) 402 are provided as the external device 400 .

[0065] The conveying speed sensor 401 is configured using, for example, a rotary encoder, and can detect the conveying speed of the workpiece W. The conveying speed sensor 401 outputs a signal (detection signal) indicating the detection result to the print controller 100. The print controller 100 controls two-dimensional scanning of the printing laser and the like based on the detection signal input from the conveying speed sensor 401.

[0066] The PLC 402 is configured using, for example, a microprocessor, and can input a control signal to the print controller 100. The PLC 402 is used to control the laser printing system S according to a predetermined sequence.

[0067] In addition to the above-mentioned devices and apparatuses, devices configured to perform operation and control, computers configured to perform various other processes, storage devices, peripheral devices, and the like may be connected to the laser printing apparatus L in a wired or wireless manner.

[0068] Hereinafter, the hardware configuration of each of the print controller 100 and the print head 1 and the configuration related to the control of the print head 1 by the print controller 100 will be described in sequence.

[0069] <Print Controller 100>

[0070] like Figure 2 As shown, the print controller 100 includes a storage unit 101 for storing the above-mentioned print settings, a control unit 102 for controlling the print head 1 based on the print settings, and an excitation light generating unit 103 for generating laser excitation light (excitation light).

[0071] (Storage unit 101)

[0072] The storage unit 101 is configured to store print settings defined via the operation terminal 300 , and output the stored contents to the control unit 102 as necessary.

[0073] Specifically, the storage unit 101 is configured using a volatile memory, a nonvolatile memory, a hard disk drive (HDD), a solid state drive (SSD), etc., and the storage unit 101 can temporarily or always store information for indicating print settings. Note that when the operation terminal 300 is incorporated in the print controller 100, the storage device 303 can also be used as the storage unit 101.

[0074] (Control Unit 102)

[0075] The control unit 102 performs printing on the workpiece W and the like by controlling at least the excitation light generating unit 103 of the print controller 100 and the laser output unit 2 and the laser scanning unit 4 of the print head 1 based on the print settings stored in the storage unit 101 .

[0076] Specifically, the control unit 102 has a CPU, a memory, and an input / output bus, and generates a control signal based on a signal indicating information input via the operation terminal 300 and a signal indicating a printing condition read from the storage unit 101. The control unit 102 controls printing on the workpiece W by outputting the control signal generated in this manner to each unit of the laser printing apparatus L.

[0077] For example, when the printing process of the workpiece W is started, the control unit 102 reads the laser power stored in the storage unit 101 and outputs a control signal generated based on the laser power to the excitation light generating unit 103 to control the generation of laser excitation light.

[0078] In addition, when actually printing on the workpiece W, the control unit 102 reads, for example, the print pattern Pp stored in the storage unit 101, and outputs a control signal generated based on the print pattern Pp to the laser scanning unit 4 to two-dimensionally scan the printing laser. In this way, the control unit 102 can control the laser scanning unit 4 so as to achieve two-dimensional scanning of the printing laser.

[0079] (Excitation light generating unit 103)

[0080] The excitation light generating unit 103 oscillates the laser corresponding to the driving current, focuses the oscillated laser and outputs it as laser excitation light (excitation light). Specifically, the excitation light generating unit 103 according to the present embodiment includes an excitation light source for oscillating the laser and a light focusing unit for focusing the laser. For example, a laser diode (LD) can be used to configure the excitation light source. For example, a focusing lens can be used to configure the light focusing unit.

[0081] The excitation light output from the excitation light generating unit 103 is input to the print head 1 via an optical fiber cable, etc. Note that the excitation light generating unit 103 does not necessarily have to be provided in the print controller 100 , and may be provided in the print head 1 .

[0082] (Other components)

[0083] The print controller 100 further includes a first selection unit 105, a second selection unit 106, a third selection unit 107, and a print time calculation unit 108. Although the details will be described later, the first selection unit 105, the second selection unit 106, the third selection unit 107, and the print time calculation unit 108 perform processing related to the print condition similarly to the above-mentioned print condition setting unit 104. Note that these elements may be installed on the operation terminal 300 instead of the print controller 100.

[0084] <Print Head 1>

[0085] The print head 1 includes a laser output unit 2 and a laser scanning unit 4. The laser output unit 2 generates laser light (printing laser light) based on the excitation light and outputs the laser light. The laser scanning unit 4 irradiates the workpiece W with the laser light output from the laser output unit 2 and performs two-dimensional scanning in a printing area R1 on the surface of the workpiece.

[0086] In addition, the print head 1 further includes a focus adjustment unit 3 interposed between the laser output unit 2 and the laser scanning unit 4. The focus adjustment unit 3 is configured to adjust the focus position of the printing laser light. Note that the focus adjustment unit 3 is not essential.

[0087] (Laser output unit 2)

[0088] The laser output unit 2 is configured to generate near-infrared laser light for printing based on the excitation light generated by the excitation light generating unit 103 , and output the near-infrared laser light to the laser scanning unit 4 via the focus adjusting unit 3 .

[0089] Specifically, the laser output unit 2 includes a so-called laser oscillator. The laser oscillator generates laser light having a predetermined wavelength based on laser excitation light, and amplifies the laser light to emit near-infrared laser light.

[0090] Although details are omitted, the laser oscillator includes: a laser medium 21 for performing stimulated emission corresponding to laser excitation light to emit laser light; a Q switch 22, which is configured to pulse the laser light emitted from the laser medium 21; and a reflection mirror (not shown) for resonating the laser light pulsed by the Q switch 22.

[0091] In particular, in the present embodiment, rod-shaped Nd:YVO4 (yttrium vanadate) is used as the laser medium 21. As a result, the laser output unit 2 can output laser light having a wavelength near 1064 nm (the above-mentioned near-infrared laser light) as a printing laser. However, for example, rare earth-doped YAG, YLF, and GdVO4, etc., can be used as other laser media without being limited to this example. Various laser media 21 can be used depending on the application of the laser printing device L.

[0092] In addition, the laser medium 21 can also be combined with a wavelength conversion element to convert the wavelength of the laser light to be output into an arbitrary wavelength. The wavelength change element can be configured using one or more nonlinear optical crystals. In addition, a so-called fiber laser using an optical fiber can be used as a laser oscillator.

[0093] (Focus adjustment unit 3)

[0094] The focus adjustment unit 3 allows the printing laser beam output from the laser output unit 2 to pass through and adjusts the focus position of the printing laser beam. The printing laser beam that has passed through the focus adjustment unit 3 is incident on the laser scanning unit 4.

[0095] Although details are omitted, the focus adjustment unit 3 includes, for example, an input lens for transmitting the printing laser output from the laser output unit 2, a collimating lens for passing the printing laser that has passed through the input lens, an output lens for passing the printing laser that has passed through the input lens and the collimating lens, and a lens driving unit for moving the input lens.

[0096] When adjusting the focal position, for example, the lens driving unit is operated based on a control signal from the control unit 102. With this operation, while the optical axes of the input lens, the collimating lens, and the output lens are kept coaxial with respect to the printing laser, the relative distance between the input lens and the output lens is changed. With this change, the focal position of the printing laser used to irradiate the workpiece W is changed.

[0097] (Laser scanning unit 4)

[0098] The laser scanning unit 4 is configured to irradiate the workpiece W with the laser light (laser light for printing) that has been emitted from the laser output unit 2 and passed through the focus adjustment unit 3 , and to perform two-dimensional scanning on the surface of the workpiece W.

[0099] In the present embodiment, a so-called dual-axis (X-axis and Y-axis) galvano scanner is used to configure the laser scanning unit 4. That is, the laser scanning unit 4 includes: a first scanner 41 configured to scan the near-infrared laser light incident from the focus adjustment unit 3 in a first direction; and a second scanner 42 configured to scan the near-infrared laser light scanned by the first scanner 41 in a second direction.

[0100] Here, the second direction indicates a direction substantially orthogonal to the first direction. Therefore, the second scanner 42 may scan the near-infrared laser light in a direction substantially orthogonal to the first scanner 41.

[0101] The laser scanning unit 4 operates the first scanner 41 and the second scanner 42 according to the pre-created print setting, thereby deflecting the printing laser toward the printing area R. The printing laser deflected in this manner is transmitted through the exit window 6 provided in the housing of the print head 1 and emitted into the printing area R1. A desired print pattern Pp can be printed in the printing area R1 by the printing laser.

[0102] It is necessary to create a print setting suitable for the material of the workpiece W in order to print the desired print pattern Pp. The laser printing apparatus L according to the present embodiment has a configuration designed to create such a print setting.

[0103] <Print Settings Creation Process>

[0104] In the following, reference will be made to Figure 3 , Figure 4 , Figure 5 and FIG. 6A to FIG. 6J Describes the print settings creation process. Figure 3 is a flowchart showing processing related to setting of printing conditions. Figure 4 : is a table showing materials of the workpiece W and laser printing methods that can be selected according to the respective materials. Figure 5is a table showing printing conditions according to respective laser printing methods. FIG. 6A to FIG. 6J 301 is a diagram showing a screen displayed on the display unit 301 .

[0105] First, in step S11 , the print controller 100 sets a print pattern Pp on the setting plane R2 based on a user operation on the input interface Iu. The print pattern Pp may be pre-stored in the storage unit 101 , or may be input each time via the operation terminal 300 or changed via the operation terminal 300 .

[0106] More specifically, the content set in step S11 includes the content, size, rotation posture, and layout of the character string and / or graphics constituting the print pattern Pp. Note that, although details are omitted, multiple workpieces W or only one workpiece W may be displayed on the setting plane R2. In addition, multiple print patterns Pp may be set on one workpiece W.

[0107] Subsequently, in step S12 , the first selection unit 105 displays a plurality of different types of materials forming the workpiece W on the display unit 301 , and any one type is selected based on a user operation.

[0108] Here, a plurality of different types of materials include metal, resin (synthetic resin) and other materials. According to the first selection unit 105 of this embodiment, at least a material belonging to metal or resin (synthetic resin) can be selected. Each of metal and resin is subdivided into one or more than one selection items. Other materials include, for example, ceramics.

[0109] For example, Figure 4 As shown, in this embodiment, items corresponding to iron or SUS, items corresponding to the casting surface of cast iron, items corresponding to aluminum, items corresponding to copper, items corresponding to heat-resistant aluminum, items corresponding to nickel plating, items corresponding to tin plating, items corresponding to gold plating, items corresponding to silver plating, items corresponding to super steel, items corresponding to high-speed steel, and items corresponding to brass are displayed on the display unit 301 as selection items belonging to metal. For example, in the case where a workpiece W made of aluminum is a printing object, an item corresponding to aluminum is selected. Similarly, in the case where a gold-plated workpiece W is set as a printing object, an item corresponding to gold plating is selected.

[0110] In addition, although not shown, an item corresponding to cationic coating, an item corresponding to alumina, an item corresponding to zirconia, and an item corresponding to ferrite may be included in the selection items belonging to metal.

[0111] In addition, if Figure 4As shown, in this embodiment, items corresponding to ABS and items corresponding to other resins are displayed as selection items belonging to resins on the display unit 301. For example, in the case where a workpiece W made of ABS is a printing target, an item corresponding to ABS is selected.

[0112] In addition, although details are omitted, the items corresponding to other resins can be further subdivided into items corresponding to polypropylene and items corresponding to polybutylene terephthalate, and the like.

[0113] Each selection item will be described using a specific example. For example, when the control process proceeds from step S11 to step S12, the display unit 301 displays Fig. 6A The first screen SC1 shown in FIG. 1 can be displayed by controlling the display unit 301 by the first selection unit 105. Fig. 6A In the example of FIG. 1 , the first screen SC1 is a dialog box that can be superimposed on other displays.

[0114] like Fig. 6A As shown, the first interface I1, the second interface I2, the third interface I3, the fourth interface I4 and the fifth interface I5 are displayed on the first screen SC1.

[0115] The first interface I1 is a user interface for selecting a material type. The second interface I2 is a user interface for selecting a laser printing method. The third interface I3 is a user interface for selecting a quality level. The fourth interface I4 is a user interface for starting a process related to sample printing. The fifth interface I5 is a user interface for completing a process related to setting of printing conditions.

[0116] Here, when the first interface I1 receives a click operation, etc., the display content of the display unit 301 changes from the first screen SC1 to the second screen SC2. The details of the second screen SC2 are as follows: Figure 6B shown.

[0117] like Figure 6B As shown, in addition to the above-mentioned first interface I1 and the like, a sixth interface I6, a seventh interface I7 and an eighth interface I8 are also displayed on the second screen SC2.

[0118] The sixth interface I6 is a user interface for the first selection unit 105 to select an item belonging to metal. The seventh interface I7 is a user interface for the first selection unit 105 to select an item belonging to resin. The eighth interface I8 is a user interface for the first selection unit 105 to select an item belonging to other materials.

[0119] Here, when the sixth interface I6 receives a click operation, etc., the display content of the display unit 301 changes from the second screen SC2 to the third screen SC3. The details of the third screen SC3 are as follows: Figure 6C shown.

[0120] like Figure 6C As shown, on the third screen SC3, the display content of the sixth interface I6 is expanded into a plurality of tree items. Each expanded item is used as a selection item belonging to metal. When the sixth interface I6 repeatedly receives a click operation, etc., it can be displayed in the following manner: Figure 6C The tree shown is shown as Figure 6B In the case where there are a large number of material types constituting the selection items, such a tree display is effective for classification.

[0121] In addition, for example, when printing is performed on a workpiece W made of metal, Figure 6C As shown, the items of resin are displayed in a folded state. In this way, the usability of the laser printing apparatus L can be improved by selectively using whether to perform tree display according to the large classification of materials.

[0122] Here, for example, by clicking the item "iron", the first selection unit 105 can select "iron" as the material type of the workpiece W. Thereafter, when the first interface I1 receives a click operation again, the display content of the display unit 301 changes from the third screen SC3 to the fourth screen SC4. The details of the fourth screen SC4 are as follows: Fig.6D shown.

[0123] like Fig.6D As shown, in addition to the display content of the first interface I1, the fourth screen SC4 has Fig. 6A The same configuration as in the first screen SC1. Fig.6D The first interface I1 shows that the material type of the workpiece W is "iron".

[0124] Subsequently, from step S13 to step S16, the second selection unit 106 displays a plurality of different types of laser printing methods corresponding to the type of workpiece W on the display unit 301 based on the material type selected by the first selection unit 105, and selects any laser printing method based on a user operation.

[0125] Note that the “plurality of different laser printing methods” here refers to methods that are selectively used according to the hue of printing performed on the workpiece W, the surface state of the workpiece W, or the hue of the workpiece W as a printing target.

[0126] Here, the laser printing method selectively used according to the color of the print performed on the workpiece W or the surface state of the workpiece W is related to, for example, a workpiece W made of metal. On the other hand, the laser printing method selectively used according to the color of the workpiece W as the printing object is related to, for example, a workpiece W made of resin.

[0127] In addition, in the present embodiment, the concept of "print quality" is also used as a concept different from the "laser printing method." Here, "print quality" is not a classification based on the hue of printing performed on the workpiece W, the surface state of the workpiece W, or the hue of the workpiece W as a printing object, but refers to parameter settings related to the trade-off between printing time and printing contrast.

[0128] Here, among the various laser printing methods, such as Figure 4 and Figure 5 As shown, the laser printing method selectively used according to the hue of the printing performed on the workpiece W or the surface state of the workpiece W includes, for example, a black carving method (black carving method), a white carving method (white carving), a gloss method 1 (gloss 1), a gloss method 2 (gloss 2), a deep engraving method (deep engraving method), a shallow engraving method (engraving) and black carving only for a two-dimensional code (code: black).

[0129] Here, the black shaving method is the so-called black printing. Black printing is a method in which the workpiece W is shaving deeply with a laser and the shaving marks are visualized in black as a result. The white shaving method is the so-called white printing. White printing is a method in which visible light is irregularly reflected on the surface of the workpiece W as a result of shallow shaving of the workpiece W, so that white appears.

[0130] Both gloss method 1 and gloss method 2 are examples of black printing without unevenness. These methods are techniques for forming an oxide film on the metal surface constituting the workpiece W and using the film for visualization in black. Since this technique is a method of not shaving the surface of the workpiece W, the surface of the workpiece W is smooth even after printing. For example, in materials such as iron and SUS, the printing conditions suitable for imparting gloss differ depending on the composition and thickness of the workpiece W, and thus gloss printing corresponding to many workpieces W can be performed by selectively using these two printing methods.

[0131] The deep engraving method is a method of performing chipping more deeply than the black chipping method. The shallow engraving method is a method of scraping off the plated surface of the workpiece W to perform printing using the color contrast between the plated surface and the base material exposed by scraping off the plating layer.

[0132] Black clipping only for two-dimensional codes means a method of using a black clipping method for two-dimensional codes such as bar codes or QR codes (registered trademark) and using a white clipping method for other characters and logos, etc. Generally speaking, since the white clipping method can be performed in a shorter time than the black clipping method, the efficiency of printing time can be improved by combining the white clipping method with the black clipping method.

[0133] On the other hand, in a number of different laser printing methods, such as Figure 4 and Figure 5 As shown, the laser printing method selectively used according to the hue of the workpiece W as the printing object includes, for example: color printing on the workpiece W based on cold colors (cold colors), color printing on the workpiece W based on warm colors (warm colors), and color printing on the workpiece W based on black colors (black colors). Note that the "cold colors" here include at least white and blue. In addition, the "warm colors" here include at least red and yellow.

[0134] Compared with the workpiece W based on a cold color and the workpiece W based on a black color, the workpiece W based on a warm color is less likely to develop color. Therefore, the color printing on the workpiece W based on a warm color corresponds to the method performed when the focus is positive. On the other hand, compared with the workpiece W based on a warm color, the workpiece W based on a cold color and the workpiece W based on a black color are more likely to develop color, but there is a possibility that the print is burned when the focus is positive. Therefore, the color printing on the workpiece W based on a cold color and the workpiece W based on a black color corresponds to the method performed in a defocused state.

[0135] From these methods, it is necessary to select an appropriate method according to the material of the workpiece W. For such selection, in the present embodiment, the storage unit 101 includes a method storage unit 101 a.

[0136] For each material type selected by the first selection unit 105, the method storage unit 101a stores one or more of the black shaved method, the white shaved method, the gloss method 1, the gloss method 2, the deep engraving method, and the shallow engraving method in association with each other as the laser printing method selected by the second selection unit 106. Then, the second selection unit 106 displays a plurality of laser printing methods corresponding to the material type selected by the first selection unit 105 on the display unit 301 based on the content stored in the method storage unit 101a. A specific example of the displayed content will be described later.

[0137] The details of the association using the method storage unit 101a are as follows Figure 4 shown.

[0138] For example, iron or SUS is associated with black shaving method, white shaving method, gloss method 1, gloss method 2, deep engraving method, and black shaving only for QR codes. In addition, the cast surface of cast iron is associated with black shaving method and white shaving method. In addition, aluminum is associated with black shaving method, white shaving method, deep engraving method, and black shaving only for QR codes. In addition, copper is associated with black shaving method, white shaving method, and deep engraving method. In addition, heat-resistant aluminum, gold plating, and silver plating are associated with shallow engraving method. In addition, nickel plating and tin plating are associated with gloss method 1 and shallow engraving method. In addition, super steel, high-speed steel, and brass are associated with black shaving method and white shaving method.

[0139] In addition, ABS and other resins are associated with color printing for a workpiece W based on a cold color, color printing for a workpiece W based on a warm color, and color printing for a workpiece W based on a black color.

[0140] Note that the meaning of "a plurality of different laser printing methods" is not limited to the above-mentioned use. For example, the use of parameters unrelated to the printing time can be regarded as the use of the laser printing method, and the use of parameters related to the printing time can be regarded as the use of the printing quality.

[0141] The selection items of the laser printing method corresponding to the material type will be described with reference to a specific example. For example, when the control process proceeds from step S12 to step S13, the second selection unit 106 determines the selection candidate of the laser printing method corresponding to the material type selected by the first selection unit 105 based on the content stored in the method storage unit 101a.

[0142] Subsequently, when the control process proceeds from step S13 to step S14, the print time calculation unit 108 calculates the print time required to print the print pattern Pp set in the input interface Iu for the workpiece W of the type selected by the first selection unit 105, for each laser printing method (selection candidate of the laser printing method) to be selected by the second selection unit 106. Then, the second selection unit 106 displays a plurality of laser printing methods corresponding to the material type selected by the first selection unit 105 on the display unit 301 based on the contents stored in the method storage unit 101a.

[0143] When calculating the printing time, the printing time calculation unit 108 performs element decomposition of the printing pattern Pp in units of line segments. Thereafter, the printing time is calculated by adding the time required to scan each element. Here, in the case of a method of repeatedly scanning each line segment (a method with a large number of prints), the printing time becomes relatively long. In addition, in the case of a method using a high scanning speed, the printing time becomes relatively short. In addition, in the case of a method using a wide scanning line interval, the printing time becomes relatively long.

[0144] In addition, when selecting a laser printing method, the user can be assisted by not only listing the respective methods but also displaying an image that evokes the contents of the respective methods. In order to perform such assistance, in the present embodiment, the storage unit 101 includes an image storage unit 101b.

[0145] The image storage unit 101b stores at least one of a preview image and a diagram for showing each laser printing method for each laser printing method to be selected by the second selection unit 106. Then, the second selection unit 106 displays a plurality of different laser printing methods on the display unit 301, and based on the content stored in the image storage unit 101b, displays at least one of the preview image and the diagram in association with each laser printing method displayed on the display unit 301. A specific example of the display content will be described later.

[0146] For example, at the second interface I2 Fig.6D When a click operation or the like is received on the fourth screen SC4 shown, the control process proceeds from step S14 to step S15.

[0147] Then, when the control process proceeds to step S15, the display content of the display unit 301 changes from the fourth screen SC4 to the fifth screen SC5. The details of the fifth screen SC5 are as follows: Fig. 6E The fifth screen SC5 is a screen for displaying selection candidates of the laser printing method, preview images and diagrams showing the respective laser printing methods, and the printing time in the respective laser printing methods.

[0148] like Fig. 6E As shown, in addition to the above-mentioned first interface I1, etc., the name Pm of each laser printing method, the preview image Im1 corresponding to the laser printing method, the illustration Im2 corresponding to the laser printing method, and the printing time Ti required for the laser printing method are also displayed on the fifth screen SC5. The preview image Im1 is an image corresponding to a plan view showing the presence or absence of color development and gloss of the print pattern Pp. The illustration Im2 is an image corresponding to a cross-sectional view showing the focal position and cutting depth of the printing laser. The preview image Im1 and the illustration Im2 can be called "printing images" that conceptualize the laser printing method.

[0149] For example, in the case of the black clipping method, a preview image Im1 indicating that the character string has a black color is displayed. On the other hand, in the case of the white clipping method, a preview image indicating that the character string has a white color is displayed.

[0150] Since the print image and the print time are displayed side by side, even a user who is not accustomed to laser printing can select a laser printing method that is likely to achieve a desired appearance and that can complete printing within a desired time.

[0151] On the fifth screen SC5, only methods corresponding to the selected material type (iron in the example of the drawing) are displayed. For example, printing methods such as color printing on a workpiece W based on cold colors that cannot be performed on a workpiece W made of iron are not displayed.

[0152] Then, the second selection unit 106 can be caused to select the laser printing method by performing a click operation or the like on any name Pm displayed on the display unit 301. As a result, the control process completes step S16 after step S15.

[0153] For example, by clicking the name Pm of the "black trimming method", the second selection unit 106 can select the "black trimming method" as the type of laser printing method. Thereafter, when the second interface 12 receives a click operation again, the display content of the display unit 301 changes from the fifth screen SC5 to the sixth screen SC6. The details of the sixth screen SC6 are as follows: Fig. 6F shown.

[0154] like Fig. 6F As shown, in addition to the display content related to the second interface I2, the sixth screen SC6 also has Fig.6D The same configuration as the fourth screen SC4 in FIG. As a difference from the fourth screen SC4, Fig. 6F The second interface I2 displays that the type of the laser printing method is "black shaving method", and displays a preview image Im1 and an illustration Im2 corresponding to the black shaving method and a printing time Ti required for the black shaving method.

[0155] Note that, as described above, there is an element called print quality as a concept independent of the laser printing method. Print quality affects the length of printing time. There may also be users who wish to adjust such print quality.

[0156] The print quality can be selected by the above-mentioned third selection unit 107. The third selection unit 107 displays the print quality in the laser printing method selected by the second selection unit 106 as a plurality of different quality levels on the display unit 301, and one of these quality levels is selected based on the user operation. Note that the selection by the third selection unit 107 is not essential.

[0157] In addition, the selection of the quality level can be performed individually for each print pattern Pm, rather than simultaneously for all print contents of the workpiece W. As a result, for some print patterns (e.g., two-dimensional codes) Pm for which the user attaches importance to quality, it is possible to print with high quality in sufficient time, and for print patterns Pm for which the user does not attach such importance to quality, it is possible to print in a shorter time. As a result, the usability of the laser printing device L can be improved.

[0158] For example, at the third interface I3 Fig. 6F When a click operation or the like is received on the sixth screen SC6 shown, the control process proceeds from step S16 to step S17.

[0159] Then, when the control process proceeds to step S17, the display content of the display unit 301 changes from the sixth screen SC6 to the seventh screen SC7. The details of the seventh screen SC7 are as follows: Figure 6G The seventh screen SC7 is a screen for receiving an operation of selecting a quality level.

[0160] like Figure 6G As shown, in addition to the above-mentioned first interface I1, etc., the seventh screen SC7 also displays a ninth interface I9 and a tenth interface I10. Each of these interfaces corresponds to a selection item of a quality level. Specifically, the ninth interface I9 is ​​an interface for selecting the quality level of a character string or logo in the print pattern Pp. The tenth interface I10 is an interface for selecting the quality level of a two-dimensional code (2D code) in the print pattern Pp.

[0161] For example, when the ninth interface I9 receives a click operation, the display content of the display unit 301 changes from the seventh screen SC7 to the eighth screen SC8. The details of the eighth screen SC8 are as follows: Figure 6H shown.

[0162] like Figure 6H As shown, on the eighth screen SC8, the display content of the ninth interface I9 is ​​expanded so that selection items of the quality level are displayed. The selection items include: "Quality Priority" selected when print quality is prioritized, "Speed ​​Priority" selected when print speed is prioritized, and "Recommendation" obtained by balancing print quality and print speed. "Recommendation" can be used for the initial setting of the quality level. In addition, next to each item, the print time calculated by the print time calculation unit 108 is displayed together for each quality level. In the case where the tenth interface I10 receives a click operation, etc., such a display mode is also similar. In addition, the display content of the ninth interface I9 is ​​an example, and the selection items can also be displayed in other expressions. For example, the selection item selected when print quality is prioritized may be "Quality Priority", and the selection item selected when print speed is prioritized may be "Speed ​​Priority".

[0163] For example, consider the case where the ninth interface I9 is ​​changed to "speed priority" and the tenth interface I10 is kept "recommended". Fig.6I As shown, by changing the ninth interface I9 to "speed priority", the printing time Ti displayed on the second interface I2 is changed to a shorter time.

[0164] In addition, the print controller 100 according to the present embodiment may also provide an interface for changing parameters not related to the printing time among parameters similar to the printing quality. An example of such an interface is Figure 6JThe eleventh interface I11 in FIG. The eleventh interface I11 can adjust the level of laser power as an example of a parameter not related to printing time.

[0165] In addition, an interface for changing the defocus amount and the Q switch frequency as parameters not related to the printing time may be provided. The presence or absence of such an interface may be selected according to the material type of the workpiece W. For example, Fig.6I As shown, in the case where the material type of the workpiece W is resin, an interface for changing parameters not related to printing time may be provided.

[0166] Finally, when the fifth interface I5 receives a click operation or the like in a state where the material type, the laser printing method type, and the quality level as required are selected, the control process proceeds to step S18.

[0167] In step S18, the printing condition setting unit 104 sets the printing condition. Specifically, the printing condition setting unit 104 sets the printing condition for printing the printing pattern Pm on the workpiece W of the material type by the laser printing method based on the printing pattern Pm set by the input interface Iu, the material type selected by the first selection unit 105, and the laser printing method type selected by the second selection unit 106.

[0168] More specifically, in step S18, in addition to the printing pattern Pm set by the input interface Iu, the material type selected by the first selection unit 105 and the laser printing method type selected by the second selection unit 106, the printing condition setting unit 104 also sets the printing conditions based on the quality level selected by the third selection unit 107.

[0169] The setting details of the print condition setting unit 104 are as follows: Figure 5 shown.

[0170] First, the case of the black chipping method (black chipping) will be described. In this case, the scanning speed is set to be relatively slow so that sufficient heat is applied to the same position. The scanning speed is set to, for example, about 100 to 300 mm / s. In addition, the defocus amount is set to zero (i.e., positive focusing). In addition, the number of prints is set to be relatively small. The number of prints is set to, for example, about twice. In addition, the laser power is set to be relatively high so as to deeply chip the workpiece W. The laser power is set to, for example, about 80%. The scanning line interval is set to be substantially equal to the spot diameter of the printing laser. The scanning line interval is set to, for example, about 0.05 mm. Note that in the example of the accompanying drawings, the output parameter using % is set as the laser power, but the output parameter of the laser power is not limited to a relative parameter of %. For example, an absolute parameter such as the amount of current can be used.

[0171] Next, the case of the white clipping method (white clipping) will be described. In this case, the scanning speed is set to be relatively fast so that the same position is not overheated. The scanning speed is set to be above 1000mm / s, for example. In addition, the defocus amount is set to zero (i.e., positive focus). In addition, the number of prints is set to be relatively small. The number of prints is set to be about twice, for example. In addition, as in the black clipping method, the laser power is set to be relatively high. The laser power is set to be about 80%, for example. The scanning line interval is set to be slightly larger than the spot diameter of the printing laser. The scanning line interval is set to be about 0.06mm, for example.

[0172] Next, the case of gloss method 1 will be described. In this case, the scanning speed is set to be relatively fast. The scanning speed is set to, for example, 1000 mm / s or more. In addition, the defocus amount is set to a non-zero value so that the workpiece W is not cut by the printing laser. In addition, the number of prints is set to be relatively large. The number of prints is set to, for example, about five times. In addition, the laser power is set to be relatively high. The laser power is set to, for example, about 80%. The scanning line interval is set to be approximately the same as or slightly smaller than the spot diameter of the printing laser. The scanning line interval is set to, for example, about 0.04 to 0.05 mm.

[0173] Next, the case of gloss method 2 will be described. In this case, the scanning speed is set to be relatively slow. The scanning speed is set to, for example, about 100 to 300 mm / s. In addition, the defocus amount is set to a non-zero value so that the workpiece W is not cut by the printing laser. In addition, the number of prints is set to be relatively small. The number of prints is set to, for example, about two times. In addition, the laser power is set to be relatively high. The laser power is set to, for example, about 80%. The scanning line interval is set to be approximately the same as or slightly smaller than the spot diameter of the printing laser. The scanning line interval is set to, for example, about 0.04 to 0.05 mm.

[0174] Next, the case of deep engraving will be described. In this case, the scanning speed is set to be relatively slow. The scanning speed is set to, for example, about 100 to 300 mm / s. In addition, the defocus amount is set to zero (i.e., positive focus). In addition, the number of prints is set to be relatively large. The number of prints is set to, for example, about five times. In addition, the laser power is set to be relatively high. The laser power is set to, for example, about 80%. The scanning line interval is set to be substantially equal to the spot diameter of the printing laser. The scanning line interval is set to, for example, about 0.05 mm.

[0175] Next, the case of only black for the code will be described. In this case, the scanning speed can be set to fast or slow. The scanning speed can be set to about 100 to 300 mm / s, for example, or can be set to more than 1000 mm / s. In addition, the defocus amount is set to zero (i.e., positive focus). In addition, the number of prints is set to be relatively small. The number of prints is set to about twice, for example. In addition, the laser power is set to be relatively high. The laser power is set to about 80%, for example. The scanning line interval is set to be approximately the same as or slightly larger than the spot diameter of the printing laser. The scanning line interval is set to about 0.05 to 0.06 mm, for example.

[0176] Next, the case of chipping will be described. In this case, the scanning speed is set to be relatively fast. The scanning speed is set to be, for example, above 1000 mm / s. In addition, the defocus amount is set to zero (i.e., positive focus). In addition, the number of prints is set to be relatively small. The number of prints is set to be, for example, about two times. In addition, the laser power is set to be relatively high. The laser power is set to be, for example, about 80%. The scanning line interval is set to be substantially equal to the spot diameter of the printing laser. The scanning line interval is set to be, for example, about 0.05 mm.

[0177] Next, the case of color printing (cold color) on the workpiece W based on cold colors will be described. In this case, the scanning speed is set to be relatively fast. The scanning speed is set to be, for example, above 1000 mm / s. In addition, the defocus amount is set to a non-zero value so that the workpiece W is not burned by the printing laser. In addition, the number of prints is set to be relatively small so that the workpiece W is not burned. The number of prints is set to be, for example, about two times. In addition, the laser power is set to be relatively low so that the workpiece W is not burned. The laser power is set to be, for example, about 30%. The scanning line interval is set to be slightly larger than the spot diameter of the printing laser. The scanning line interval is set to be, for example, about 0.06 mm.

[0178] Next, the case of color printing (warm color) on a workpiece W based on warm colors will be described. In this case, the scanning speed is set to be relatively fast. The scanning speed is set to, for example, 1000 mm / s or more. In addition, the defocus amount is set to a non-zero value so that the workpiece W is not burned by the printing laser. In addition, the number of prints is set to be relatively small so that the workpiece W is not burned. The number of prints is set to, for example, about two times. In addition, since resins based on warm colors are less likely to develop colors than resins based on cold colors, the laser power is set to be relatively high. Since the defocus amount is set to a non-zero value and the laser power is set to be relatively high, it is possible to more reliably develop colors while suppressing the burning of the workpiece W. The scanning line interval is set to be slightly larger than the spot diameter of the printing laser. The scanning line interval is set to, for example, about 0.06 mm. Note that in color printing (warm color), printing that suppresses burning can be performed by providing a defocus amount set to a non-zero value, but it is not necessary to set the defocus amount to a non-zero value. Printing with a defocus amount of 0 can also be performed.

[0179] Next, the case of color printing (black color) on a workpiece W based on black color will be described. In this case, the scanning speed is set to be relatively fast. The scanning speed is set to, for example, above 1000 mm / s. In addition, the workpiece W is not burned by the printing laser. In this case, the scanning speed is set to be relatively fast. The scanning speed is set to, for example, above 1000 mm / s. In addition, the defocus amount is set to a non-zero value so that the workpiece W is not burned by the printing laser. In addition, the number of prints is set to be relatively small so that the workpiece W is not burned. The number of prints is set to, for example, about two times. In addition, the laser power is set to be lower than the laser power in the color printing on the workpiece W based on the cold color, so that the workpiece W is not burned. The scanning line interval is set to be slightly larger than the spot diameter of the printing laser. The scanning line interval is set to, for example, about 0.06 mm.

[0180] Here, return to FIG. 6A to FIG. 6J When the fourth interface 14 receives a click operation or the like, the print condition setting unit 104 according to the present embodiment executes processing related to so-called sample printing.

[0181] Generally, there are many parameters for characterizing the laser for printing, as in the above-mentioned printing conditions, and it is inconvenient to adjust such parameters one by one because it requires labor.

[0182] Therefore, according to the present embodiment, the printing condition setting unit 104 sets two parameters of the multiple different parameters constituting the printing conditions as variable parameters, sets the remaining parameters as fixed parameters, and changes the variable parameters, thereby generating multiple different printing conditions. At this time, for each laser printing method to be selected by the second selection unit 106, the printing condition setting unit 104 selects the variable parameter corresponding to the laser printing method.

[0183] That is, only two parameters among a plurality of different parameters constituting the printing condition are set as variable parameters. As a result, appropriate parameters can be searched in a two-dimensional matrix. Thus, the user's time and effort can be saved. In addition, by selecting parameters corresponding to the laser printing method as variable parameters, the variable parameters can be selected more appropriately.

[0184] <Conclusion>

[0185] As mentioned above, Figure 3 Steps S12 to S16 and Figure 4 , Figure 6C and Fig. 6E As shown in the figure, the laser printing device L according to the present embodiment causes the first selection unit 105 to select the type of material, then causes the display unit 301 to display a plurality of different laser printing methods corresponding to the type, and causes the second selection unit 106 to select one of the plurality of different laser printing methods. As a result, the options can be displayed in stages, and the number of options displayed on the display unit 301 at the same time can be reduced. This is effective in ensuring the usability of the laser printing device L. In addition, there is no change in selecting each of the material type and the laser printing method type, and thus the printing condition can be appropriately set. In this way, the printing condition can be appropriately set without impairing the usability of the laser printing device L according to the present embodiment.

[0186] In addition, if Figure 3 Step S17 and Figure 6G , Figure 6J and Fig.6I As shown in FIG. 1 , the laser printing apparatus L according to the present embodiment considers the quality level in addition to the material type and the laser printing method type. As a result, the printing conditions can be set more appropriately.

[0187] In addition, if Figure 3 Steps S14 to S15 and Fig. 6E As shown in FIG. 1 , the laser printing device L according to the present embodiment displays the printing time in association with each laser printing method. As a result, even a user who is not used to laser printing can set the printing conditions to fall within the desired printing time. Thus, the usability of the laser printing device L can be improved.

[0188] In addition, if Figure 3 Step S15 and Fig. 6E As shown in FIG. 1 and FIG. 2 , the laser printing apparatus L according to the present embodiment displays the preview image Im1 and the illustration Im2 in association with each laser printing method. As a result, even a user who is not accustomed to laser printing can set the printing conditions to achieve a desired appearance. Thus, the usability of the laser printing apparatus L can be improved.

[0189] In addition, as described with respect to the fourth interface I4, variable parameters can be automatically selected in association with each laser printing method. As a result, parameters can be searched more efficiently when further adjusting the printing conditions. Thus, the usability of the laser printing device L can be improved.

[0190] <Other embodiments>

[0191] In the above embodiment, if Fig. 6E As shown, for each laser printing method, the printing time Ti for printing by the method is displayed, but the present disclosure is not limited to such a configuration. Instead of or in addition to the configuration of displaying the printing time Ti, the display order of the laser printing methods on the fifth screen SC5 may be arranged in order from the method with the shorter printing time Ti. Fig. 6E In the example of FIG5 , the respective methods are displayed in the order of the white shaved method, the black shaved method, and the glossy method from the top of the fifth screen SC5 .

[0192] Figure 7 is with Fig. 6E The corresponding figure shows a modified example of the display screen. Figure 7 As shown in the display screen SC5', a twelfth interface I12 for receiving an input of a desired printing time can be provided in the display screen SC5'. For example, when printing within 5.0 seconds is desired, the user inputs "5.0" to the twelfth interface I12. Then, as shown in the right half of the display screen SC5', laser printing methods whose printing time Ti exceeds the desired printing time (=5.0 seconds) are hidden, and only laser printing methods whose printing time Ti is equal to or less than the desired printing time are displayed. At this time, the value of the printing time Ti can be hidden.

[0193] Alternatively, instead of Figure 7 In the example in the right half of , the laser printing methods whose printing time Ti is equal to or less than the expected printing time can be emphasized (e.g., highlighted), and the laser printing methods whose printing time Ti exceeds the expected printing time can be maintained without hiding.

Claims

1. A laser printing device, for controlling a laser output unit and a laser scanning unit to print a predetermined printing pattern in a printing area, the laser printing device comprising: The laser output unit is used to generate laser light based on the excitation light and output the laser light; The laser scanning unit is used to irradiate a printing object with the laser light output from the laser output unit and perform two-dimensional scanning in a printing area on a surface of the printing object; A display unit, used for displaying a setting plane corresponding to the printing area; a printing pattern setting unit, used for setting the printing pattern on the setting plane displayed on the display unit; a first selection unit, configured to display a plurality of different types of materials forming the printing object on the display unit, and select any type based on a user operation; a second selection unit, configured to display, on the display unit, a plurality of different types of laser printing methods corresponding to the type of printing object based on the type of the material selected by the first selection unit, and select any laser printing method based on a user operation; as well as A printing condition setting unit is used to set printing conditions for printing the printing pattern on a printing object of the type of material by the laser printing method based on the printing pattern set by the printing pattern setting unit, the type of material selected by the first selection unit, and the type of laser printing method selected by the second selection unit.

2. The laser printing device according to claim 1, further comprising: a method storage unit for storing one or more of a black shaving method, a white shaving method, a gloss method, a deep engraving method, and a shallow engraving method in association with each other as the laser printing method selected by the second selection unit for each type of material selected by the first selection unit, The second selection unit displays a plurality of laser printing methods corresponding to the type of material selected by the first selection unit on the display unit based on the content stored in the method storage unit.

3. The laser printing device according to claim 1, further comprising: a third selection unit for displaying the print quality in the laser printing method selected by the second selection unit on the display unit as a plurality of different quality levels, and selecting any one of the quality levels based on a user operation, Among them, in addition to the printing pattern set by the printing pattern setting unit, the type of material selected by the first selection unit and the type of laser printing method selected by the second selection unit, the printing condition setting unit also sets the printing condition based on the quality level selected by the third selection unit.

4. The laser printing device according to claim 1, further comprising: a printing time calculation unit, for calculating, for each laser printing method to be selected by the second selection unit, a printing time required for printing the printing pattern set by the printing pattern setting unit on the printing object of the type selected by the first selection unit, The second selection unit displays a plurality of different laser printing methods on the display unit, and displays the printing time calculated by the printing time calculation unit in association with each laser printing method displayed on the display unit.

5. The laser printing device according to claim 1, further comprising: an image storage unit, for storing at least one of a preview image and a diagram for showing each laser printing method to be selected by the second selection unit, The second selection unit displays a plurality of different laser printing methods on the display unit, and based on the content stored in the image storage unit, displays at least one of the preview image and the illustration in association with each laser printing method displayed on the display unit.

6. The laser printing device according to claim 1, wherein: The printing condition setting unit: setting two parameters among a plurality of different parameters constituting the printing condition as variable parameters, setting the remaining parameters as fixed parameters, and changing the variable parameters to generate a plurality of different printing conditions, and For each laser printing method to be selected by the second selection unit, a variable parameter corresponding to the laser printing method is selected.

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