JP7193018B2 - Handy printer, printing method and program - Google Patents

Description

The present invention relates to a handy printer , printing method and program.

Patent Document 1 describes a handy printer that prints an image on a recording paper with a recording head while manually moving the printer body on the recording paper.

Japanese Patent Application Laid-Open No. 2001-225512

The handy printer disclosed in Japanese Patent Application Laid-Open No. 2002-200301 prints while being held by the user's hand, so it can print on non-printing media of various locations, colors, and materials, not limited to printing paper. However, depending on the color of the print medium, the color of the image to be printed and the color of the print medium may be close to each other, and the printed image may blend into the color of the print medium, making it difficult to see. rice field.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a handy printer , a printing method, and a program that make it easy to visually recognize a printed image regardless of the color of the printing medium. .

In order to achieve the above object, in one aspect of the present invention, a handy printer has a facing surface facing the printing medium when printing an image on the printing medium, and a predetermined region of the facing surface facing the printing medium. A handy printer that ejects ink toward a print medium, wherein the color discriminating means discriminates the color of the print medium based on an output value from a sensor having a detection surface provided on the facing surface ; When the difference between the color of the print medium discriminated by the color discriminating means and the color of the print candidate image on the print medium is smaller than a predetermined standard, the print candidate image is the contour line of the print candidate image. and a contour image generated by the generating means in place of the print candidate image when printing on the printing medium whose color has been discriminated by the color discriminating means. wherein the outline image is an image in which the outline portion is set as a print area and the portion other than the outline is set as a non-print area. , characterized in that

Further, in order to achieve the above object, one aspect of the printing method according to the present invention has a surface facing the print medium when an image is printed on the print medium, and a predetermined area on the surface facing the print medium. A printing method executed by a handy printer in which ink is ejected toward the print medium from the above, wherein the color of the print medium is determined based on an output value from a sensor provided with a detection surface on the facing surface. and when the difference between the color of the print medium determined by the color determination process and the color of the print candidate image on the print medium is smaller than a predetermined standard, the print candidate image is a generation process for generating a contour image expressed by contour lines of the print candidate image; and the generation process instead of the print candidate image when printing on the print medium whose color has been discriminated by the color discrimination process. and a printing control process for controlling the contour image generated in step 1 to be printed, wherein the contour image is set such that the contour line portion is set as a print area and the portion other than the contour line is a non-print area. The image is set as

In order to achieve the above object, according to one aspect of the present invention, there is provided a program having a facing surface facing the printing medium when an image is printed on the printing medium, and from a predetermined area on the facing surface a computer of a handy printer that ejects ink toward the print medium; When the difference between the color of the print medium discriminated by the color discriminating means and the color of the print candidate image on the print medium is smaller than a predetermined standard, the print candidate image is the contour line of the print candidate image. generating means for generating a contour image represented by the following: when printing on the printing medium whose color has been discriminated by the color discriminating means, the contour image generated by the generating means is used in place of the print candidate image The contour image is an image in which the contour line portion is set as a print area and the portion other than the contour line is set as a non-print area. It is characterized by

According to the present invention, it is possible to facilitate visual recognition of a printed image regardless of the color of the printing medium.

1A and 1B are a side view and a bottom view of a printing apparatus according to Embodiment 1; FIG. 1 is a block diagram showing the configuration of a printing apparatus according to Embodiment 1; FIG. 3A and 3B are diagrams showing examples of (a) an image to be printed, (b) a print medium, and (c) an image to be printed printed on the print medium; FIG. 3A and 3B are diagrams showing (a) an image to be printed to which contour lines have been added, (b) a print medium, and (c) an image to be printed which has been printed on a print medium to which contour lines have been added, according to Embodiment 1; . 4 is a flowchart of print processing executed by the printing apparatus according to the first embodiment; 9 is a flowchart of print processing executed by a printing apparatus according to Embodiment 2; (a) an image to be printed, (b) a print medium, (c) an image to be printed whose colors have been changed, and (d) a print target whose colors have been changed and printed on the print medium FIG. 4 is a diagram showing an image; It is the (a) side view and (b) bottom view of the printing apparatus of a modification.

(Embodiment 1)
A printer 1 according to Embodiment 1 will be described with reference to the drawings. The same reference numerals are given to the same or corresponding parts in the drawings.

1A and 1B are a side view and a bottom view of a printing apparatus 1 according to Embodiment 1. FIG. The printing device 1 is a manual scanning printing device that prints an image (image data) to be printed on the printing medium 2 by being gripped by a user and slidably moved on the printing medium 2 . . Such manual scanning printing devices are also called handy printers or direct printers.

The print medium 2 may include, but is not limited to, printing paper, printing labels, and cardboard. The print medium 2 is also called a recording medium or a print target. The print medium 2 is typically made of paper or resin, but is not limited to these. Any material to which ink can be adhered may be used as long as it has a surface state to which ink can be adhered.

The image 3 to be printed may include characters, symbols, graphics, patterns, pictures, and photographs, but is not limited to these. The image 3 to be printed is also called a print image or a print pattern.

FIG. 2 is a block diagram showing the configuration of the printer 1. As shown in FIG. As shown in FIGS. 1A and 2, the printing apparatus 1 includes a housing 10, a printing unit 20, a movement measurement unit 30, a color discrimination unit 40, an interface unit 50, and a control unit 60. , and a storage unit 70 .

The housing 10 accommodates the printing unit 20 , the movement amount measuring unit 30 , the color discrimination unit 40 , the interface unit 50 , the control unit 60 , and the storage unit 70 , which are components of the printing apparatus 1 . As shown in FIGS. 1A and 1B, the printing section 20, the movement amount measuring section 30, the color discrimination section 40, and the interface section 50 are exposed from the housing 10. FIG. The housing 10 is made of resin or metal, but is not limited to this. The housing 10 has a marker 11 on a surface adjacent to the surface on which the printing unit 20 is arranged. The housing 10 is also called an apparatus main body 10 . The housing 10 includes a substrate, a battery, etc. inside, but illustration thereof is omitted.

The marker 11 is an indicator that indicates to the user the width of the print head 22 of the printing unit 20, which will be described later, and the print start position. The width of the marker 11 is equal to the width of the print portion 20. FIG.

The printing unit 20 is arranged on the surface of the housing 10 that contacts the print medium 2 and prints the image 3 to be printed on the print medium 2 . The printing unit 20 includes an ink tank 21 filled with ink, and a print head 22 for ejecting fine droplets of the ink filled in the ink tank 21, and performs printing by an inkjet method. The ink tank 21 supplies ink to the print head 22 . A plurality of nozzles 23 are arranged in the print head 22 along the main scanning direction and the sub-scanning direction. The print head 22 heats the ink in the nozzles 23 with a heater to generate bubbles in the ink, and the generated bubbles eject the ink from the nozzles 23 onto the print medium 2 .

The movement amount measuring unit 30 is a sensor that measures the amount of relative movement of the printing device 1 and the printing unit 20 included in the printing device 1 with respect to the printing medium 2 . As shown in FIG. 2, the movement amount measurement unit 30 includes an LED (Light Emitting Diode) 31 and an image sensor 32. The image sensor 32 reads the light emitted by the LED 31 and reflected by the print medium 2. By comparing the reflected light before and after the movement, the amount and direction of movement of the printing device 1 are measured. The movement amount measurement unit 30 provides data including the measured amount and direction of movement to the control unit 60 .

The color discrimination section 40 discriminates the color of the printing medium 2 . The color discrimination unit 40 discriminates three colors of reflected light of R (red, first component), G (green, second component), and B (blue, third component) from the discrimination target. It is a color sensor that discriminates the color of The color discrimination section 40 provides the control section 60 with data including the discriminated color of the printing medium 2 .

The interface unit 50 accepts input from the user including instructions to start decoration printing and finish decoration printing, and presents information to the user. The interface unit 50 provides the control unit 60 with the accepted instructions to start printing, stop printing, and whether or not to add contour lines, and presents the information acquired from the control unit 60 to the user. The interface unit 50 may include buttons, keys, or a touch pad for receiving input from the user, a liquid crystal display or speaker for presenting information to the user, or a touch panel serving as both of them. It is not limited to this.

The control unit 60 is a processing device that controls the printing device 1 by executing programs. The control unit 60 includes a print control unit 61 , a color comparison unit 62 and an image change unit 63 . The control unit 60 may include a CPU (Central Processing Unit), but is not limited to this.

When the interface unit 50 receives an instruction to start printing, the print control unit 61 controls the printing unit 20 to start printing the image 3 to be printed. At this time, the housing 10 is held by the user to move the printer 1 . The print control unit 61 acquires the movement amount measured by the movement amount measurement unit 30, and controls the printing unit 20 to print a portion of the image 3 to be printed corresponding to the position of the printing unit 20. FIG. When the image 3 to be printed is completely printed, the print control unit 61 controls the printing unit 20 to stop printing.

The color comparison section 62 compares the color of the printing medium 2 transmitted from the color discrimination section 40 with the color of the portion (boundary portion) of the image 3 to be printed that is in contact with the non-printing portion. Specifically, the color comparison unit 62 calculates the difference between the color coordinates of the printing medium 2 transmitted from the color discrimination unit 40 and the color coordinates of the portion of the image 3 to be printed that is in contact with the non-printing portion, in terms of RGB. When the obtained difference values are below the threshold values for all of RGB, it is determined that the color of the print medium 2 and the color of the boundary portion of the image 3 to be printed match. When it is determined that the colors match, the color comparison unit 62 controls the interface unit 50 to notify the user that the colors match.

When the color comparison unit 62 determines that the color of the print medium 2 matches the color of the boundary of the image 3 to be printed, the image changing unit 63 controls the interface unit 50 to change the image to be printed. Ask the user whether to add an outline to 3. When the user inputs to the interface unit 50 to select the addition of the outline, the image changing unit 63 edits the image 3 to be printed and adds the outline 4 to the border of the image 3 to be printed. . The color of the outline 4 is preferably black, but any color can be used as long as it does not match the color of the printing medium 2 and the color of the border of the image 3 to be printed.

3A and 3B are diagrams showing examples of (a) an image 3 to be printed, (b) a print medium 2, and (c) an image 3 to be printed printed on the print medium 2. FIG. As shown in FIG. 3(a), the image 3 to be printed is composed of three 1-color images arranged side by side. As shown in FIG. 3B, the color of the print medium 2 matches one color of the image included in the image 3 to be printed. When the image 3 to be printed is printed on the printing medium 2 without adding the outline 4, as shown in FIG. It becomes difficult.

FIG. 4 shows (a) an image 3 to be printed to which a contour line 4 has been added, (b) a print medium 2, and (c) an image 3 to be printed printed on the print medium 2 with a contour line 4 added. It is a figure which shows. By adding the contour line 4 as shown in FIG. 4(a), the color of the print medium 2 matches the color of one of the images included in the image 3 to be printed, as shown in FIG. 4(b). Even in the case where the colors match, as shown in FIG.

The storage unit 70 stores programs and data for the control unit 60 to execute processing, and functions as a work area when the control unit 60 executes processing. The storage unit 70 stores a program for controlling the printing unit 20 to print, a program for controlling the movement amount measuring unit 30 to measure the movement amount, and a color discrimination unit 40 for discriminating and printing the color of the printing medium 2. program, a program for comparing the color of the print medium 2 and the color of the image 3 to be printed, a program to add the outline 4 to the image 3 to be printed, the coordinates of the printing unit 20, and the data of the image 3 to be printed. Although it can be stored, the object to be stored is not limited to this. The storage unit 70 may include a ROM (Read Only Memory) and a RAM (Random Access Memory), but the elements of the storage unit 70 are not limited to these.

A print process executed by the printing apparatus 1 according to the first embodiment will be described. FIG. 5 is a flowchart of print processing executed by the printer 1 . The print processing will be described with reference to the flowchart of FIG.

When the comparison process is started, the color discrimination section 40 discriminates the color of the printing medium 2 (step S101).

After determining the color of the print medium 2, the color comparison unit 62 determines whether the absolute value of the difference between the R value of the boundary portion of the image 3 to be printed and the R value of the print medium 2 is equal to or less than a threshold value ( step S102). If it is determined that it is larger than the threshold (step S102: NO), the process proceeds to step S108.

If it is determined to be equal to or less than the threshold (step S102: YES), the color comparison unit 62 determines whether the absolute value of the difference between the G value of the boundary portion of the image 3 to be printed and the G value of the print medium 2 is equal to or less than the threshold. It is determined whether or not (step S103). If it is determined that it is larger than the threshold (step S103: NO), the process proceeds to step S108.

If it is determined to be equal to or less than the threshold (step S103: YES), the color comparison unit 62 determines whether the absolute value of the difference between the B value of the boundary portion of the image 3 to be printed and the B value of the print medium 2 is equal to or less than the threshold. It is determined whether or not (step S104). If it is determined that it is larger than the threshold (step S104: NO), the process proceeds to step S108.

If it is determined to be less than or equal to the threshold value (step S104: YES), that is, if it is determined that the absolute value of the color coordinate difference between the boundary portion of the image 3 to be printed and the printing medium 2 is less than or equal to the threshold value for RGB, the color The comparison unit 62 controls the interface unit 50 to notify the user that the colors match (step S105).

When the color comparison unit 62 notifies the user, the image change unit 63 controls the interface unit 50 to display a question asking the user whether to add the outline 4 to the image 3 to be printed. 50 accepts input by the user to select whether to add contour 4 (step S106). If the user inputs through the interface unit 50 that the addition is not to be made (step S106: NO), the process proceeds to step S108.

If the user inputs through the interface unit 50 to add (step S106: YES), the image changing unit 63 edits the image 3 to be printed and adds the outline 4 to the boundary (step S107).

After adding the contour line 4 to the boundary, the print control unit 61 controls the print unit 20 to print the image 3 to be printed on the print medium 2 (step S108), and the print process ends.

By executing the printing process with the configuration as described above, the printing apparatus 1 according to the first embodiment can perform printing when the color of the image 3 to be printed matches the color of the printing medium 2. A contour line 4 may be added to the target image 3 to facilitate the user's viewing of the printed image regardless of the color of the receiving medium 2 .

The manual scanning type printing apparatus has the advantage that printing can be performed regardless of the location and size of the printing medium 2, but according to the printing apparatus according to the first embodiment, in addition to the above, It becomes possible to print without selecting the color of the print medium 2.例文帳に追加

(Embodiment 2)
A printing apparatus 1 according to Embodiment 2 will be described with reference to the drawings. The configuration of the printing device 1 according to the second embodiment is the same as the configuration of the printing device 1 according to the first embodiment shown in FIGS.

The image changing unit 63 included in the printing apparatus 1 according to the second embodiment asks the user whether or not to add a contour line to the image 3 to be printed, and when the user selects to add the contour line 4, an interface A display prompting the user to select the color of the outline 4 to be added by controlling the unit 50 is performed.

When the user selects the color of the contour line 4, the color comparison section 62 compares the color of the printing medium 2 transmitted from the color discrimination section 40 and the color of the contour line 4 transmitted from the interface section 50. . Specifically, the color comparison unit 62 acquires the difference between the color coordinates of the printing medium 2 transmitted from the color discrimination unit 40 and the color coordinates of the outline 4 in terms of RGB. is below the threshold value, it is determined that the color of the printing medium 2 and the color of the outline 4 match. When it is determined that the colors match, the color comparison unit 62 controls the interface unit 50 to notify the user that the colors match.

When the color comparison unit 62 determines that the color of the printing medium 2 and the color of the outline 4 match, the image change unit 63 controls the interface unit 50 to change the color of the outline 4. Ask the user how. When the user changes the color of the contour line 4 , the color comparison section 62 compares the color of the printing medium 2 with the changed color of the contour line 4 . If not changed, or if the color of the printed medium 2 and the color of the outline 4 do not match, edit the image 3 to be printed to add the outline 4 to the border of the image 3 to be printed. do.

A print process executed by the printing apparatus 1 according to the second embodiment will be described. FIG. 6 is a flowchart of print processing executed by the printer 1 . The print processing will be described with reference to the flowchart of FIG. Steps S201-S206 are the same as steps S101-S106 shown in FIG. 6, except that the process proceeds to step S214 instead of step S108, and the description thereof is omitted.

In step S206, when the user inputs through the interface unit 50 to add a contour line (step S206: YES), the image changing unit 63 controls the interface unit 50 to select the color of the contour line 4 to be added. A display prompting the user is displayed, and the interface unit 50 receives an input from the user for selecting the color of the outline 4 (step S207).

Upon receiving an input for selecting the color of the contour line 4, the color comparison unit 62 determines whether the absolute value of the difference between the R value of the contour line 4 and the R value of the print medium 2 is equal to or less than a threshold value (step S208). ). If it is determined that it is larger than the threshold (step S208: NO), the process proceeds to step S213.

If it is determined that it is equal to or less than the threshold (step S208: YES), the color comparison unit 62 determines whether the absolute value of the difference between the G value of the outline 4 and the G value of the print medium 2 is equal to or less than the threshold ( step S209). If it is determined that it is larger than the threshold (step S209: NO), the process proceeds to step S213.

If it is determined that it is equal to or less than the threshold (step S209: YES), the color comparison unit 62 determines whether the absolute value of the difference between the B value of the outline 4 and the B value of the print medium 2 is equal to or less than the threshold ( step S210). If it is determined that it is larger than the threshold (step S210: NO), the process proceeds to step S213.

If it is determined to be less than or equal to the threshold value (step S210: YES), that is, if it is determined that the absolute value of the difference in color coordinates between the contour line 4 and the printing medium 2 is less than or equal to the threshold value for RGB, the color comparison unit 62 Then, the user notifies the user that the colors match by controlling the interface unit 50 (step S211).

When the notification that the colors match is given, the image changing unit 63 displays a question asking the user whether to change the color of the outline 4, and the interface unit 50 responds to the user's request for the color of the outline 4. is received (step S212). If the user selects to change the color of the outline 4 (step S212: YES), the process returns to step S208.

If the user does not select to change the color of the contour line 4 (step S212: NO), the image changing unit 63 edits the image 3 to be printed and adds the contour line 4 to the boundary (step S212: NO). S213).

After adding the outline 4 to the boundary, the print control unit 61 controls the print unit 20 to print the image 3 to be printed on the print medium 2 (step S214), and the print process ends.

By executing the printing process with the configuration as described above, the printing apparatus 1 according to the second embodiment has the effect of the printing apparatus 1 according to the first embodiment, and the color of the added outline 4 is It is possible to prevent the printed image from becoming difficult to see due to matching the color of the printing medium 2 .

According to the printing apparatus 1 according to the second embodiment, the user selects the color of the contour line 4 to be added, thereby allowing the user to select the overall color tone including the print medium 2 , the image 3 to be printed, and the contour line 4 . can be changed as desired.

(Embodiment 3)
A printing apparatus 1 according to Embodiment 3 will be described with reference to the drawings. The configuration of the printer 1 according to the third embodiment is the same as the configuration of the printer 1 according to the first embodiment shown in FIGS.

When the color comparison unit 62 determines that the color of the printing medium 2 matches the color of the boundary of the image 3 to be printed, the image changing unit 63 included in the printing apparatus 1 according to the second embodiment changes the interface Control the unit 50 to ask the user whether to change the color of the image 3 to be printed. When the user inputs through the interface unit 50 to select the color to be changed and determines the color to be changed, the image changing unit 63 changes the color of the portion of the image 3 to be printed that matches the color of the medium 2 to be printed. change the color of

The color comparison unit 62 further compares the color of the print medium 2 with the image 3 to be printed changed by the image change unit 63, and notifies when it is determined that the colors match.

FIG. 7 shows (a) an image 3 to be printed, (b) a print medium 2, (c) an image 3 to be printed whose colors have been changed, and (d) an image printed on the print medium 2 with its colors changed. FIG. 3 is a diagram showing an image 3 to be printed; Even if the colors of the image 3 to be printed and the color of the printing medium 2 match as shown in FIGS. 7A and 7B, the image changing unit 63 By changing the color of the image to be printed, it is possible to easily recognize the image whose colors match as shown in FIG. 7(d).

By having the above-described configuration and executing the printing process, the printing apparatus 1 according to the second embodiment achieves the effects of the printing apparatus 1 according to the first embodiment, as well as the printing medium 2 and the printing target. It is possible to change the color tone of the entire image including the image 3 as desired by the user.

(Modification)
Although the embodiment of the present invention has been described above, this embodiment is an example, and the scope of application of the present invention is not limited to this. That is, the embodiments of the present invention can be applied in various ways, and all embodiments are included in the scope of the present invention.

Although the printing unit 20 includes the ink tank 21 and the print head 22 and performs printing by an inkjet method, it is not limited to this. Any printing method including a thermal method and a thermal transfer method may be used for printing.

Although the movement amount measuring unit 30 includes the LED 31 and the image sensor 32, and the image sensor 32 reads the light emitted by the LED 31 and reflected by the print medium 2, the movement amount is measured. is not. The movement amount measuring unit 30 may include a roller or a ball arranged on the bottom surface of the housing 10 and measure the movement amount by measuring the rotation thereof. Alternatively, a laser light source may be included, and the image sensor 32 may read the laser light emitted by the laser light source and reflected by the print medium 2 to measure the movement amount.

Although it has been described that the color discrimination section 40 discriminates the three RGB color components of the printing medium 2 and the color comparison section 62 compares the three RGB colors, the present invention is not limited to this. The combination of the components of the colors discriminated by the color discrimination section 40 and the color components compared by the color comparison section 62 is arbitrary, and the number of components is not limited to three and is arbitrary.

Further, when the color comparison unit 62 determines that the color of the printing medium 2 and the color of the outline 4 match, the image changing unit 63 edits the image 3 to be printed to change the boundary of the image 3 to be printed. Although the outline 4 is added to the part, it is not limited to this. When the contour line 4 is added, only this contour line 4 may be changed to be the new image 3 to be printed. As a result, ink consumption can be suppressed by not printing on areas with the same color.

The printing apparatus 1 may include a plurality of movement amount measuring units 30 . FIG. 8(a) is a side view of the printing apparatus 1 of this modification, and FIG. 8(b) is a bottom view thereof. As shown in FIGS. 8(a) and 8(b), the printing apparatus 1 of this modification includes two movement amount measuring units 30. FIG. If there is only one movement amount measuring unit 30, it is not possible to detect a change in orientation of the printing apparatus 1, that is, rotation. By providing a plurality of movement amount measuring units 30, it is possible to detect changes in the orientation of the printing apparatus 1, and more accurate printing becomes possible.

In addition to being able to provide a printing apparatus having a configuration for realizing the functions according to the present invention, it is also possible to make an existing printing apparatus or the like function as a printing apparatus according to the present invention by applying a program. That is, by applying the program for realizing the functions of the printing apparatus exemplified in the embodiment and the modified example so that the CPU or the like that controls the existing printing apparatus can be executed, the printing apparatus according to the present invention can be obtained. can function. Also, the printing method according to the present invention can be implemented using a printing apparatus.

Moreover, the application method of such a program is arbitrary. The program can be applied by storing it in a computer-readable storage medium such as a flexible disk, CD (Compact Disc)-ROM, DVD (Digital Versatile Disc)-ROM, memory card, or the like. Furthermore, a program can be superimposed on a carrier wave and applied via a communication medium such as the Internet. For example, the program may be posted and distributed on a bulletin board (BBS: Bulletin Board System) on a communication network. Then, the above processing may be executed by starting this program and executing it in the same manner as other application programs under the control of an OS (Operating System).

Although preferred embodiments of the present invention have been described above, the present invention is not limited to such specific embodiments, and the present invention includes the invention described in the claims and the scope of equivalents thereof. and are included. The invention described in the original claims of the present application is appended below.

(Appendix 1)
a color discrimination unit that discriminates the color of the printing medium;
The color of the print medium discriminated by the color discriminating unit is compared with the color of the boundary portion between the non-printing portion of the image to be printed, and the color of the print medium and the color of the border portion are the same. a color comparison unit that determines whether or not they match;
an image changing unit that changes the image to be printed when the color comparison unit determines that the color of the printing medium and the color of the boundary portion match;
a printing unit that prints the image to be printed, which has been changed by the image changing unit, on the print medium;
A printing device characterized by:

(Appendix 2)
The image changing unit adds a contour line to the boundary of the image to be printed when the color comparison unit determines that the color of the print medium and the color of the boundary match. ,
The printing apparatus according to appendix 1, characterized by:

(Appendix 3)
The image changing unit adds a contour line to the boundary of the image to be printed when the color comparison unit determines that the color of the print medium and the color of the boundary match. , changing the outline as a new image to be printed;
The printing apparatus according to appendix 1, characterized by:

(Appendix 4)
The color comparison unit compares the color of the print medium discriminated by the color discrimination unit and the color of the outline added by the image change unit, and compares the color of the print medium and the outline. determine if the colors match,
The image changing unit changes the color of the outline when the color comparison unit determines that the color of the print medium and the color of the outline match.
The printing apparatus according to appendix 2 or 3, characterized by:

(Appendix 5)
The image changing unit changes the color of the image to be printed when the color comparing unit determines that the color of the print medium and the color of the boundary match.
The printing apparatus according to appendix 1, characterized by:

(Appendix 6)
The color comparison unit determines that an absolute value of a difference between a first component of the color of the print medium and a first component of the color of the boundary portion is equal to or less than a threshold, and a second color of the print medium. an absolute value of a difference between the component and the second component of the border color is equal to or less than a threshold, and an absolute value of a difference between the third component of the color of the printing medium and the third component of the border color is Determining that the color of the print medium and the color of the border match when the absolute value is equal to or less than a threshold;
The printing apparatus according to any one of appendices 1 to 5, characterized by:

(Appendix 7)
a movement amount measurement unit that measures a movement amount and a movement direction of the printing unit with respect to the printing medium;
A print control unit that acquires the movement amount and the movement direction measured by the movement amount measurement unit, controls the printing unit according to the position of the printing unit with respect to the printing medium, and causes the image to be printed to be printed. and
7. The printing apparatus according to any one of appendices 1 to 6, characterized by:

(Appendix 8)
An interface unit that notifies a user when the color comparison unit determines that the color of the print medium and the color of the boundary match,
8. The printing apparatus according to any one of appendices 1 to 7, characterized by:

(Appendix 9)
determining the color of the printed medium,
comparing the determined color of the print medium with the color of the boundary between the non-printing portion of the image to be printed and determining whether the color of the print medium matches the color of the boundary; judge,
changing the image to be printed when it is determined that the color of the print medium and the color of the boundary portion match;
printing the modified image to be printed on the print medium;
A printing method characterized by:

(Appendix 10)
to the computer,
distinguishing the color of the printing medium,
comparing the discriminated color of the print medium with the color of the boundary between the non-printing portion of the image to be printed and determining whether the color of the print medium matches the color of the boundary; let
changing the image to be printed when it is determined that the color of the print medium and the color of the boundary portion match;
causing the changed print target image to be printed on the print medium;
A program characterized by

REFERENCE SIGNS LIST 1 printing device 2 printing medium 3 image to be printed 4 outline 10 housing (apparatus main body) 11 marker 20 printing unit 21 ink tank 22 print head , 23... nozzle, 30... movement amount measurement unit, 31... LED, 32... image sensor, 40... color discrimination unit, 50... interface unit, 60... control unit, 61... print control unit, 62... color comparison unit, 63 ... image changing unit, 70 ... storage unit

Claims (4)

A handy printer having a facing surface facing the printing medium when printing an image on the printing medium, wherein ink is ejected from a predetermined area of the facing surface toward the printing medium,
color discrimination means for discriminating the color of the print medium based on the output value from a sensor having a detection surface provided on the facing surface ;
When the difference between the color of the print medium discriminated by the color discriminating means and the color of the print candidate image on the print medium is smaller than a predetermined standard, the print candidate image is an outline of the print candidate image. generating means for generating a contour image represented by lines;
print control means for controlling such that when printing is performed on the printing medium whose color has been discriminated by the color discriminating means, the contour image generated by the generating means is printed instead of the print candidate image;
with
The contour image is an image in which the contour line portion is set as a print area and the portion other than the contour line is set as a non-print area.
A handy printer characterized by: A setting means for setting the color of the outline according to a user operation,
2. The handy printer according to claim 1, wherein: A printing method executed by a hand-held printer that has a facing surface that faces the printing medium and ejects ink from a predetermined area on the facing surface toward the printing medium when printing an image on the printing medium. and
a color discrimination process for discriminating the color of the print medium based on an output value from a sensor having a detection surface provided on the facing surface ;
When the difference between the color of the print medium discriminated in the color discrimination process and the color of the print candidate image on the print medium is smaller than a predetermined standard, the print candidate image is an outline of the print candidate image. generation processing for generating a contour image represented by lines;
print control processing for controlling so that the outline image generated in the generation processing is printed instead of the print candidate image when printing on the printing medium whose color has been determined in the color determination processing;
including
The contour image is an image in which the contour line portion is set as a print area and the portion other than the contour line is set as a non-print area.
A printing method characterized by: A computer of a handy printer having a facing surface facing the printing medium and ejecting ink from a predetermined area of the facing surface toward the printing medium when printing an image on the printing medium ,
color discrimination means for discriminating the color of the print medium based on an output value from a sensor having a detection surface provided on the facing surface ;
When the difference between the color of the print medium discriminated by the color discriminating means and the color of the print candidate image on the print medium is smaller than a predetermined standard, the print candidate image is an outline of the print candidate image. generating means for generating a contour image represented by lines;
print control means for controlling to print the contour image generated by the generation means instead of the print candidate image when printing on the printing medium whose color has been determined by the color determination means;
function as
The contour image is an image in which the contour line portion is set as a print area and the portion other than the contour line is set as a non-print area.
A program characterized by

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