Printing device and method for controlling printing device

Abstract

To solve the problem that printing conditions cannot be changed easily.SOLUTION: A printer includes a printing unit for printing on a printing target object, a projection unit for projecting a printing image onto the printing target object, a detection unit for detecting an action of a user in a projection area where the projection unit is capable of projection, and a control unit for controlling the printing unit based on printing conditions. The control unit changes the printing conditions based on the user's action detected by the detection unit.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a printing device and a control method for a printing device. [Background technology]

[0002] 2. Description of the Related Art Conventionally, as disclosed in Patent Document 1, there is known an apparatus that detects a position detection mark provided on a printing jig, changes print data, and prints the data. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-177578 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the device described in Patent Document 1 does not allow the user to easily change the printing conditions of the print data. [Means for solving the problem]

[0005] The printing device comprises a printing unit that prints on a substrate, a projection unit that projects a print image onto the substrate, a detection unit for detecting user movements within a projection area into which the projection unit can project, and a control unit that controls the printing unit based on printing conditions, and the control unit changes the printing conditions based on the user movements detected by the detection unit.

[0006] A control method for a printing device that includes a printing unit that prints on a substrate based on printing conditions, a projection unit that projects a print image onto the substrate, and a detection unit that detects user movements within a projection area into which the projection unit can project, the control method changing the printing conditions based on the user movements detected by the detection unit. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a block diagram showing the configuration of a printing apparatus according to an embodiment. [Diagram 2] FIG. 1 is a schematic diagram showing the configuration of a printing apparatus according to an embodiment. [Diagram 3] 4 is a flowchart showing a control method of the printing apparatus. [Figure 4] A projected print image when the user's actions are detected and the printing conditions are changed. [Diagram 5] 13 is a diagram showing a print image and warning information projected when printing cannot be performed within a predetermined range. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, the embodiments will be described with reference to the drawings. The directions in the drawings will be described using a three-dimensional coordinate system. For convenience of explanation, the positive direction of the Z axis will be referred to as the upward direction or simply the upward direction, the negative direction will be referred to as the downward direction or simply the downward direction, the positive direction of the Y axis will be referred to as the rightward direction or simply the right direction, the negative direction will be referred to as the leftward direction or simply the left direction, and the negative direction of the X axis will be referred to as the forward direction or simply the forward direction, and the positive direction will be referred to as the rearward direction or simply the rearward direction.

[0009] 1. Printer configuration As shown in Fig. 1, the printing device 1 includes a control unit 10, a storage unit 11, a printing unit 12, a main scanning unit 13, a sub-scanning unit 14, and a projector 20. The projector 20 has a projection unit 21 and a detection unit 22. Each of these will be described in detail with reference to Fig. 2.

[0010] 1 includes a CPU (Central Processing Unit) that controls each part of the printer 1, a UART (Universal Asynchronous Receiver Transmitter) that manages input and output, and logic circuits such as an FPGA (Field Programmable Gate Array) and a PLD (Programmable Logic Device). The CPU is also simply called a processor. The storage unit 11 includes a flash ROM (Read Only Memory), which is a rewritable nonvolatile memory, an HDD (Hard Disk Drive), a RAM (Random Access Memory), which is a volatile memory, and the like. The CPU of the control unit 10 reads out programs such as firmware stored in the non-volatile memory of the storage unit 11, and executes them using the RAM of the storage unit 11 as a working area.

[0011] 2 may be, for example, a sheet-like object such as ordinary paper, synthetic paper, or film, or may be a three-dimensional object such as a resin such as plastic, a metal such as iron, or wood. The user places the object P on the table 30. The printing unit 12 has an inkjet head. For example, the ink ejected from the head of the printing unit 12 is so-called ultraviolet curing ink. The ink contains pigments such as CMYK (Cyan, Magenta, Yellow, Black). The printing unit 12 also includes a supply mechanism that supplies ink to the head. As shown in FIG. 2, the printing device 1 is a so-called flatbed type device that can print on a substrate P fixed to a table 30 by scanning the printing unit 12 back and forth and left and right using a main scanning unit 13 and a sub-scanning unit 14.

[0012] The main scanning unit 13 includes a carriage 13a and a carriage shaft 13b. The carriage 13a carries the printing unit 12. The carriage shaft 13b spans the front and rear directions of the table 30. The carriage shaft 13b supports the carriage 13a so that it can move. The carriage 13a carries the printing unit 12, and is movable in the front-rear direction along the carriage shaft 13b over the printing material P placed on the table 30 by a carriage motor.

[0013] The sub-scanning unit 14 includes a slider 14b and a guide rail 14a at each end of the table 30 in the front and rear directions. The guide rail 14a is formed of a groove extending in the left-right direction of the table 30. One end of the slider 14b is fixed to the carriage shaft 13b, and the other end is movably fitted in the groove of the guide rail 14a. The slider 14b can move the carriage shaft 13b in the left-right direction along the guide rail 14a by a slider motor.

[0014] The control unit 10 is capable of moving the printing unit 12 in the front-to-rear direction by controlling the main scanning unit 13, and is capable of moving the printing unit 12 in the left-to-right direction via the carriage shaft 13b by controlling the sub-scanning unit 14. The scanning direction by the main scanning unit 13 and the scanning direction by the sub-scanning unit 14 intersect each other. The control unit 10 controls the main scanning unit 13 and the sub-scanning unit 14 to print on the substrate P fixed to the table 30, and ejects ink from the printing unit 12 while scanning the printing unit 12 back and forth and left and right.

[0015] The projector 20 is, for example, a so-called interactive type having a projection unit 21 and a detection unit 22. The projector 20 is supported on a table 30 by a support unit 23. The projection unit 21 and detection unit 22 of the projector 20 are located on the table 30. The projection unit 21 is capable of projecting toward the table 30, and the detection unit 22 is capable of detecting toward the table 30. The projection unit 21 and the detection unit 22 may be configured independently of each other. In this case, the projection unit 21 and the detection unit 22 are supported by the table 30 individually.

[0016] The projection unit 21 is configured to separate the light from the light source into the three primary color components of red, blue, and green light, modulate each color of light using a liquid crystal light valve for each color of light based on image data, recombine the light, enlarge it using a lens, and project it toward the table 30. The print image (described later), which is image data projected by the projection unit 21 onto the printing substrate P, has its position, size, and other factors adjusted to correspond to the print result printed on the printing substrate P by the printing unit 12 based on the printing conditions. By visually checking the print image projected onto the printing substrate P, the user can virtually recognize it as the print result printed on the printing substrate P.

[0017] The projection area on which the projection unit 21 can project onto the table 30 may be, for example, the size of the table 30. Alternatively, the projection area may be a range that is slightly smaller than the front-back and left-right dimensions of the table 30, with a predetermined margin secured. Furthermore, the control unit 10 can also cause the projection unit 21 to project an icon indicating a predetermined menu or the like onto a predetermined position in the projection area.

[0018] The detection unit 22 receives the light reflected from the table 30. The detection unit 22 is configured with, for example, a camera having a solid-state image sensor such as a CCD (Charge Coupled Device) image sensor. In addition, the detection unit 22 preferably includes an illumination device. When detecting a non-luminous object such as a user's finger, it is preferable that the detection unit 22 uses infrared light. In this case, it is preferable to provide an illumination device that irradiates infrared light toward the table 30, and to attach a filter that transmits the infrared light band to the camera. The detection unit 22 can detect, as detected image data, a projection area on which projection can be performed by the projection unit 21. Hereinafter, the detected image data will be simply referred to as a detected image.

[0019] The printing device 1 is capable of wired or wireless communication with the external device 2. The external device 2 is, for example, a computer or a server. The printing device 1 can receive print data and printing conditions from the external device 2 and store them in the storage unit 11. The print data and the print conditions may be stored in advance in the storage unit 11, or may be read from a storage medium by a reading device provided in the storage unit 11. In addition, the projection unit 21 projects icons showing menus, and the detection unit 22 detects user actions on the icons, allowing instructions such as changing printing conditions and executing printing to be accepted. Furthermore, the printing device 1 may be equipped with an input / output device such as a touch panel. The touch panel of the printing device 1 can display menus and accept instructions such as changing printing conditions and executing printing.

[0020] 2. Printing device control method An example of a method for controlling the printing device 1 will be described with reference to the flowchart shown in FIG. 3 as well as to FIGS. The control unit 10 acquires print data from the external device 2, or acquires print data from the storage unit 11 (S101). Furthermore, the control unit 10 acquires print conditions from the external device 2, or acquires print conditions from the storage unit 11. As described above, a change in print conditions made by the user may be detected by the detection unit 22 or a touch panel of the projector 20. The control unit 10 generates a print image, which is image data that can be projected by the projection unit 21, based on the acquired print data and printing conditions. The control unit 10 causes the projection unit 21 of the projector 20 to project the generated print image toward the table 30 on which the printing substrate P is placed (S102). Figures 4 and 5 show the results of the projection unit 21 of the projector 20 projecting the generated print images, such as print image I1, print image I2, print image I3, and print image I4, onto a table 30 on which the printing material P is placed.

[0021] Here, the relationship between the print image and print data generated by the control unit 10 will be described in detail using the print image I1 in the left form of FIG. 4 as an example. The printing conditions acquired by the control unit 10 relate to, for example, the position of the print data when printed on the printing substrate P placed on the table 30, and the size when printed. The storage unit 11 stores information on coordinates in the X and Y directions based on the position of the table 30. The coordinates correspond to a storage area of ​​a first address where print data is stored in the storage unit 11. Moreover, the coordinates can be made to correspond to the X and Y axes of the table 30, as shown in Figs. 4 and 5. The control unit 10 stores the print data in the first address of the storage unit 11 in correspondence with the coordinates based on the position and size specified by the printing conditions. In the following description, the first address storage area, the second address storage area, and the third address storage area in the storage unit 11 will be simply referred to as the first address, the second address, and the third address, respectively. The second address and the third address also correspond to coordinates, just like the first address.

[0022] As described above, the first address of the storage unit 11 where the print data is stored corresponds to the coordinate position of the table 30. The control unit 10 reads out the printing data from the memory unit 11, and by using the main scanning unit 13 and the sub-scanning unit 14, scans the printing unit 12 to the coordinate position of the table 30 corresponding to the first address of the memory unit 11 where the printing data is stored, and ejects ink. As a result, the control unit 10 can print the print data on the printing substrate P placed on the table 30 by the printing unit 12 at a position and size based on the printing conditions.

[0023] The control unit 10 performs color conversion and the like based on the print data and printing conditions so as to correspond to the print result actually printed on the printing substrate P, and generates a print image I1. The generated print image I1 is stored in a second address of the storage unit 11. As described above, the second address also corresponds to the coordinates based on the position of the table 30, and corresponds to the first address for storing the print data.

[0024] The control unit 10 controls the projection unit 21 of the projector 20 to read the print image I1 from the second address of the memory unit 11 and project it toward the coordinate position of the table 30 corresponding to the second address where the print image I1 is stored. In this way, the control unit 10 can project the print image I1 that reflects the position, size, and the like based on the printing conditions onto the table 30 on which the printing substrate P is placed. As a result, the print image I1 projected by the control unit 10 onto the table 30 using the projection unit 21 of the projector 20 corresponds to the print result when printed by the printing unit 12, including the position, size, and the like. Before printing on the substrate P, the user can visually check the print image I1 projected by the projection unit 21 to confirm whether the print data will be printed on the substrate P under the intended printing conditions, etc.

[0025] At this time, for example, it is assumed that the user determines that the print image I1 projected by the projection unit 21 is not at the intended position or size. As shown in the left-hand form of Figure 4, the user can perform actions M on the print image I1 projected onto table 30, such as "tapping" by placing a finger on it, "drag" by tapping and sliding it, "swipe" by flicking the finger in a different direction from the tapped position, and "pinch in" or "pinch out" by touching with two fingers simultaneously to zoom in or out.

[0026] Here, detection of the user's action M by the detection unit 22 of the projector 20 will be described in detail. The detection unit 22 detects a detection image toward the table 30 at a predetermined interval. The control unit 10 stores the detection image detected by the detection unit 22 in a third address of the storage unit 11. Hereinafter, a detection image detected first by the detection unit 22 will be referred to as a first detection image, and a detection image detected later will be referred to as a later detection image.

[0027] As described above, the first address in memory unit 11 for storing print data, the second address for storing print image I1, and the third address for storing detected image each correspond to coordinates in table 30. Specifically, these coordinates correspond to the X-axis and Y-axis in table 30, as shown in Figures 4 and 5. As a result, the print data, print image, and detected image can be made to correspond to one another.

[0028] The control unit 10 successively compares the preceding detection image and the following detection image detected by the detection unit 22. For example, when a user places a finger on table 30, control unit 10 can determine that the user has placed a finger on table 30 by comparing a front detection image that does not include the user's finger with a rear detection image that includes the user's finger. Furthermore, the control unit 10 can also determine the position of the user's finger with respect to the table 30 based on the coordinates of the table 30 corresponding to the third address of the storage unit 11 that stores the detected image.

[0029] Similarly, the control unit 10 can determine the motion M of another user based on a detected image including the motion M of the user detected by the detection unit 22. For example, suppose that the user “taps” the print image projected by the projection unit 21 with his / her finger. The control unit 10 compares a front detection image that does not include the user's finger and is detected by the detection unit 22 before the user places his / her finger on the print image with a back detection image that includes the user's finger and is detected after the user places his / her finger on the print image. The control unit 10 can also refer to the coordinates in the table 30 corresponding to the third address of the storage unit 11 and determine that the user has placed his / her finger on the position of the print image. As a result, the control unit 10 can determine that the user has "tapped" the print image.

[0030] Also, for example, suppose that the user "tap" on the print image projected by the projection unit 21 and then "drag" it by sliding it. The control unit 10 can compare a leading detection image containing the user's finger at the "tap" position before the "drag" and a trailing detection image containing the user's finger at the position after the "drag", and also refer to the coordinates in table 30 to determine the "drag" of the user's finger relative to the print image and the amount of movement.

[0031] Also, for example, suppose that the user places two fingers on the print image projected by the projection unit 21. The control unit 10 compares the front detection image, which does not include the user's two fingers in the print image, with the back detection image, which includes the user's two fingers in the print image, and also refers to the coordinates of the table 30, and can determine that the user's two fingers are present in the position of the print image. Furthermore, suppose that the user then "pinches in" or "pinches out" to enlarge or reduce the print image with two fingers. The control unit 10 compares the initial detection image when the user places two fingers on the print image with the post-detection image when the user places two fingers on the print image and then spreads or brings the two fingers closer together, and also refers to the coordinates of table 30 to determine whether the user's fingers are "pinched in" or "pinched out" on the print image, and the amount of movement.

[0032] When the user finishes the above-mentioned motion M and removes his / her finger from the table 30, the control unit 10 compares the front detection image including the user's finger performing motion M with the back detection image not including the user's finger. As a result, the control unit 10 can determine that the user's finger has disappeared from the table 30, and can determine that the user has finished motion M.

[0033] Furthermore, the control unit 10 may use the projection unit 21 to project an icon or the like indicating a menu for changing the position, size, etc. of the print image onto a predetermined position on the table 30. As described above, the detection unit 22 detects a user's action M on the icon, and the control unit 10 can determine the user's action M. The control unit 10 can change the position and size of the print image in accordance with the user's action M on the icon. The detection unit 22 may also have a part of the functions of the control unit 10 and directly determine the user's motion M and the amount of movement thereof.

[0034] Returning to Fig. 3, the explanation will be continued. The control unit 10 determines that the detection unit 22 has detected the user's action M (S103: YES). Specifically, the control unit 10 determines, by the detection unit 22, the user's action M, such as "tap," "drag," "pinch in," or "pinch out," and the amount of movement thereof, on the print image projected on the table 30. Based on the user's action M and the amount of movement, the control unit 10 changes printing conditions such as position and size from the print image I1 in the form on the left of Figure 4 (S104), generates a print image I2 in the form on the right of Figure 4, and projects it by the projection unit 21. It should be noted that, if the control unit 10 determines that the user's action M has not been detected (S103: NO), the printing conditions are not changed.

[0035] The control unit 10 changes the printing conditions stored in the storage unit 11 based on, for example, information about the position of the print image I1 moved by "dragging" or information about the size of the print image I1 enlarged by "pinch-in." The control unit 10 can change the print data based on the above-mentioned printing conditions changed based on the user's action M, store it in the storage unit 11, and print it by the printing unit 12. Note that the changed print data corresponds to the print image I2 changed from the print image I1, as shown in FIG. 4.

[0036] Here, the predetermined range information related to printing will be explained. Hereinafter, the predetermined range information will be simply referred to as the predetermined range. The predetermined range is, for example, information indicating the range of the printing substrate P placed on the table 30. The predetermined range may be changed by the user via the touch panel of the printing device 1. Alternatively, the user may change it based on the action M. The control unit 10 can change the predetermined range based on the action M of the user detected by the detection unit 22. Furthermore, when the control unit 10 sets the range of the printing substrate P to a predetermined range, it can also set it to the range of the printing substrate P extracted from the detection image, as described above. The control unit 10 stores the changed predetermined range in the storage unit 11 in association with the coordinates of the table 30.

[0037] The control unit 10 judges whether the print data can be printed within a predetermined range (S105). This process executed by the control unit 10 will be described in detail. The print image projected by the projection unit 21 onto the printing substrate P corresponds to the print data printed by the printing unit 12 onto the printing substrate P. Therefore, for example, when the control unit 10 determines whether the print data can be printed within a predetermined range, it can make the determination using the print image instead of the print data. When the control unit 10 makes the determination using the print image, it can appropriately project warning information W by superimposing it onto the print image using the projection unit 21 in accordance with this determination, as described below.

[0038] A description will be given by taking as an example the print image I3 and the print image I4 shown in FIG. 5, which are projected by the projection unit 21. The control unit 10 refers to the second address of the storage unit 11 and acquires the position and size of the print image I3 on ​​the coordinates corresponding to the table 30. The control unit 10 also reads out from the storage unit 11 a predetermined range on the coordinates corresponding to the table 30. The control unit 10 determines whether the position and size of the print image I3 are within a predetermined range at the coordinates corresponding to the table 30. As a result, the control unit 10 can also determine whether the print data can be printed within the predetermined range. The control unit 10 can make a similar determination for the print image I4.

[0039] 5, the print image I3 projected by the projection unit 21 is within the range of the print substrate P. Therefore, the control unit 10 can determine that the print image I3 stored in the storage unit 11 is within the range of the print substrate P, and can determine that the print data corresponding to the print image I3 can be printed within the range of the print substrate P.

[0040] 5, at least a portion of the print image I4 projected by the projection unit 21 does not fall within the range of the printing substrate P, but extends beyond it. Therefore, the control unit 10 can determine that at least a portion of the print image I4 stored in the storage unit 11 does not fall within the range of the printing substrate P, but extends beyond it. As a result, the control unit 10 can determine that the print data corresponding to the print image I4 cannot be printed within the range of the printing substrate P.

[0041] In addition, the control unit 10 may refer to the first address of the memory unit 11, obtain the position and size of the print data on the coordinates corresponding to the table 30, and directly determine whether or not the print data is within a specified range on the coordinates corresponding to the table 30.

[0042] When the control unit 10 determines that the print data corresponding to the print image I4 cannot be printed within the range of the printing substrate P, which is a predetermined range (S105: NO), the control unit 10 superimposes and projects warning information W by the projection unit 21 (S107), as shown in Fig. 5. The warning information W is, for example, information that the print image I4 cannot be printed within the range of the printing substrate P. The warning information W is stored in the storage unit 11. 5, the control unit 10 projects warning information W by using an arrow to indicate the portion of the print image I4 that is not within the range of the printing substrate P and is protruding beyond the range. The warning information W also includes the arrow information shown in FIG. 5, which is information indicating the portion of the print image I4 that is not within the range of the printing substrate P. Note that the control unit 10 does not project warning information W onto the print image I3 that is within the range of the printing substrate P and is not protruding beyond the range. Then, the control unit 10 returns to the process of determining whether the detection unit 22 has detected the user's motion M (S103).

[0043] 5 and the print image I4 indicated by the arrow, the user can know that the print data corresponding to the print image I4 cannot be printed within the range of the print substrate P. On the other hand, the user can know that the print data corresponding to the print image I3 can be printed within the range of the print substrate P. Therefore, the user attempts to move the print image I4, which is outside the range of the printing substrate P, to a position within the range of the printing substrate P. The user performs an action M of "dragging" the projected print image I4 to a position within the range of the printing substrate P.

[0044] The control unit 10 determines that the detection unit 22 has detected the user's "drag" motion M (S103: YES). Based on the user's "drag" action M detected by the detection unit 22, the control unit 10 generates a print image I4 that was outside the range of the printing substrate P, but has been repositioned to within the range of the printing substrate P, and projects it by the projection unit 21.

[0045] There may also be cases where the user attempts to change the size of the print image I4 so that it fits within the range of the print substrate P. In this case, the user performs a "pinch out" motion M with two fingers to reduce the print image I4, which is outside the range of the print substrate P, so that it fits within the range of the print substrate P. The control unit 10 determines that the detection unit 22 has detected the "pinch out" motion M (S103: YES). Based on the detected "pinch out" action M of the user, the control unit 10 reduces the print image I4 that was outside the range of the printing substrate P to within the range of the printing substrate P, and projects it by the projection unit 21.

[0046] In this way, the print image I4 changed based on the user's action M is within the range of the printing substrate P. The control unit 10 changes the printing conditions stored in the storage unit 11 based on information regarding the position of the print image I4 moved by "dragging" and information regarding the size to which the print image I4 is reduced by "pinch out" (S104).

[0047] The control unit 10 can determine that the changed print image I4 is within the range of the printing substrate P, and can determine that the print data corresponding to the print image I4 can be printed within the range of the printing substrate P. Therefore, the control unit 10 can determine that the print data corresponding to the print image I3 and the print image I4 can be printed within the predetermined range of the printing substrate P (S105: YES).

[0048] Based on the changed printing conditions, the control unit 10 changes the position, size, and other aspects of the print data corresponding to the print image I4 at the first address in the storage unit 11. Based on the changed printing conditions, the control unit 10 controls the printing unit 12, the main scanning unit 13, and the sub-scanning unit 14 to print the print data corresponding to the print image I3 and the print image I4 within the range of the printing substrate P (S106). In addition, if the printing conditions have not been changed, the control unit 10 controls the printing unit 12, etc., based on the original printing conditions stored in the memory unit 11, and prints the printing data corresponding to the original print image I3 and print image I4.

[0049] As described above, the control unit 10 projects a printing image onto the substrate P using the projection unit 21, detects the user's action M using the detection unit 22, changes printing conditions such as position and size, and prints on the substrate P using the printing unit 12. The user can visually check the print image projected onto the printing substrate P and recognize the print result to be printed on the printing substrate P in advance, and by performing an operation M, the user can easily change the printing conditions and perform the intended printing.

[0050] Although these embodiments have been described above in detail with reference to the drawings, the specific configurations are not limited to these embodiments, and may be changed, substituted, deleted, etc. without departing from the gist of the present invention. For example, in the above example, the ink ejected by the printing unit 12 of the printing device 1 is an ultraviolet curable ink, but it does not have to be an ultraviolet curable ink. In addition, the ink color may include light and dark colors of CMYK, or may include colors other than CMYK. [Explanation of symbols]

[0051] 1...printing device, 2...external device, 10...control unit, 11...memory unit, 12...printing unit, 13...main scanning unit, 14...sub-scanning unit, 20...projector, 21...projection unit, 22...detection unit, 23...support unit, 30...table, I1, I2, I3, I4...printed image, P...printed material, W...warning information.

Claims

1. A printing unit that prints on a substrate; A projection unit that projects a print image onto the printing substrate; a detection unit for detecting a user's movement within a projection area where the projection unit can project; A control unit that controls the printing unit based on printing conditions, The control unit sets the printing conditions based on the user's action detected by the detection unit. Change, The projection unit projects a projection image corresponding to print data when the print unit prints the projection image on the printing medium. The printed image is projectable; When the print image is included in the detected image detected by the detection unit, the control unit In the detection image, at least a part of the print image is included in the range of the printing substrate. if not, the projection unit projects warning information.

2. The printing conditions relate to a position or a size of printing on the printing medium by the printing unit.

2. The printing device according to claim 1, wherein:

3. The warning information includes a portion of the printing substrate where the print image is not included. The printing device of claim 1 or claim 2, further comprising information indicating the

4. A table on which the printing material can be placed; a scanning unit that scans the printing unit with respect to the table, The projection unit can project the print image onto the printing material placed on the table. and the detection unit is capable of detecting the detected image including the print image. The printing apparatus according to any one of claims 1 to 3.

5. Equipped with a projector, The projector according to claim 1 , further comprising: the projection unit and the detection unit.

13. The printing device according to claim 1 .

6. A printing unit that prints on a substrate based on printing conditions and projects a print image onto the substrate. and a projection unit for detecting a user's movement within a projection area where the projection unit can project. A method for controlling a printing device including a detection unit, changing the printing conditions based on the user's action detected by the detection unit; The projection unit projects a projection image corresponding to print data when the print unit prints the projection image on the printing medium. The printed image is projectable; When the print image is included in the detected image detected by the detection unit, In the case where at least a part of the print image is not included in the range of the printing substrate, and projecting warning information using the projection unit.

Images