JP2008080519A - Printer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a printer which enables printing contents to be checked before printing. <P>SOLUTION: The printer 10 includes a printing unit 120 which prints out information to a body to be printed 14, a projecting unit 220 which projects an optical image to a position different from a position of the body 14 printed by the printing unit 120, and a control means 101 which makes the projecting unit 220 project the optical image of the information printed out by the printing unit 120 before the printing unit 120 starts printing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a printer.

  A printer that prints an image or the like on printing paper is known (see Patent Document 1).

JP 2006-192600 A

  When printing is performed with this type of printer, there is a problem that it is difficult to understand the printing range on the actual printing paper before printing.

(1) A printer according to the present invention includes a printing unit that prints information on a printing medium, a projection unit that projects an optical image on a position different from the position of the printing medium on which the printing unit is printing, and a printing unit that prints Control means for projecting an optical image of information to be printed by the printing unit onto the projection unit before starting the printing.
(2) A printer according to another invention includes a printing unit that prints information on a printing medium, a projection unit that projects an optical image toward a part of the housing, and printing before the printing unit starts printing. And a control unit that projects an optical image of information printed by the unit onto the projection unit.
(3) The printer according to claim 1 or 2 may further include an operation member that emits a signal instructing printing. The control means in this case preferably causes the printing unit to start printing when receiving a signal from the operation member during projection of an optical image of information to be printed by the projection unit.
(4) In the printer according to any one of claims 1 to 3, it is preferable that the control unit controls the projection unit so that the size of the optical image is smaller than a printing range by the printing unit.
(5) In the printer according to the fourth aspect, it is preferable that the control unit controls the projection unit so that information indicating the range of the printing medium and the printing range of the printing unit is included in the optical image.
(6) In the printer according to any one of claims 1 to 5, the control unit is configured to determine a print color of information to be printed by the print unit, a print density, a print magnification, a print position, and a size of a printing object. Of these, it is preferable to control the projection unit so that at least one item is reproduced as an optical image.
(7) The printer according to the first aspect may further include a printing medium holding unit that is arranged at a position different from the printing unit and holds a printing body before printing by the printing unit. In this case, it is preferable that the projection unit projects the optical image toward the printing surface of the printing body held by the printing body holding means.
(8) In the printer according to claim 2, a part of the housing may be a printing body holding unit that is disposed at a position different from the printing unit and holds a printing body before printing by the printing unit. . In this case, it is preferable that the projection unit projects the optical image toward the printing surface of the printing body held by the printing body holding means.
(9) The printer described in claim 1 may further include a scanner unit that reads a document, and a document cover that is disposed at a position different from the printing unit and covers the document. The projection unit in this case preferably projects an optical image toward the document cover.
(10) The printer according to the first aspect is further provided at a position different from the printing unit, and a scanner unit for reading a document, and a transparent surface placed on a surface on which the document is placed when the scanner unit is not used. And an optical screen. In this case, it is preferable that the projection unit projects the optical image back toward the translucent screen.

  With the printer according to the present invention, it is possible to confirm the print contents before printing.

The best mode for carrying out the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram illustrating a printer according to a first embodiment of the present invention. 1A and 1B, the printer 10 includes a main body 11, a cover 12, and an output paper tray 13. A printer unit 120 is disposed in the main body 11. The cover 12 also serves as a tray for the printing paper 14, and is configured to be rotatable about a rotation axis O between a use position shown in FIG. 1 (a) and a storage position shown in FIG. 1 (b).

  At the use position shown in FIG. 1A, the printing paper 14 set on the cover 12 is sent downward one by one by a paper feeding mechanism (not shown) and fed to the printer unit 120. The printer unit 120 prints on the printing paper 14 and discharges the printed printing paper 14 to the output paper tray 13.

  The main body 11 is also provided with a projector (projection unit 220). In the use position of FIG. 1A, the projection unit 220 is configured to project an optical image onto the printing paper 14 set on the cover 12. When the printing paper 14 is not set on the cover 12, the projection unit 220 projects an optical image on the cover 12, and thus the surface (projection surface) of the cover 12 is configured to be substantially white.

  An opening slightly smaller than the size of the printing paper 14 is formed on the surface 12 a of the cover 12 on which an image is projected from the projection unit 220. Therefore, the projection image emitted from the projection unit 220 is directly projected onto the printing paper 14. The normal cover 12 stores a plurality of printing papers 14. When printing is started, the printing paper 14 closest to the surface 12a of the printing papers 14 gradually becomes the main body according to the progress of printing. 11 is drawn. In addition, when the printing paper 14 runs out of the cover 12, a projection image is projected on the surface 12b facing the surface 12a of the cover 12. In addition, you may project a projection image on the surface 12a of the cover 12 without providing an opening.

  FIG. 2 is a block diagram illustrating the configuration of the printer 10 of FIG. 2, the printer 10 includes a printer unit 120, a projection unit 220, a CPU 101, a memory 102, an operation member 103, an external interface (I / F) circuit 104, a liquid crystal display 105, a hard disk drive ( HDD) 106 and a power supply circuit 107, and a removable memory card 150 is mounted.

  The CPU 101 performs a predetermined operation using signals input from each unit constituting the printer 10 based on the control program, and sends a control signal to each unit of the printer 10 to thereby perform a printing operation of the printer 10. And the projection operation, respectively. The control program is stored in a nonvolatile memory (not shown) in the CPU 101.

  The memory 102 is used as a working memory for the CPU 101. The operation member 103 sends an operation signal corresponding to the pressed button and the operated switch to the CPU 101. The memory card 150 is configured by a nonvolatile memory, and data can be written, stored, and read according to instructions from the CPU 101.

  The external interface circuit 104 transmits / receives commands and data to / from external devices (electronic camera 100, personal computer, etc.) via a cable (not shown) or a wireless communication unit according to instructions from the CPU 101.

  A hard disk drive (HDD) 106 can write, save, and read data according to instructions from the CPU 101. Since the recording capacity of the hard disk drive (HDD) 106 is larger than the recording capacity of the memory card 150, a large number of image files or the like for which printing is instructed to the printer 10 can be stored. The power supply circuit 107 is composed of, for example, an AC / DC conversion circuit, etc., converts a commercial power supply into a DC power supply necessary for each part in the printer 10, and supplies the converted voltage to each part in the printer.

  The liquid crystal display 105 displays information such as images and texts according to instructions from the CPU 101. The text information includes an operation state of the printer 10, an operation menu, a message, and the like.

  The printer unit 120 includes a motor group 121, a printer head 122, a print control circuit 123, and a sensor group 124. The motor group 121 includes a motor for feeding and discharging, a motor for driving the printer head 122, and the like. The printer head 122 includes ink nozzles that perform printing and printing on the fed printing paper 14. The print control circuit 123 sends a control signal to the motor group 121 and the printer head 122 in accordance with an instruction from the CPU 101. The sensor group 124 includes sensors for detecting the presence / absence of the printing paper 14, the feeding position of the printing paper 14, and the remaining amount of ink, and outputs each detection signal to the printing control circuit 123.

  The projection unit 220 includes a projection optical system 221, a liquid crystal panel 222, an LED light source 223, and a projection control circuit 224. The LED light source 223 illuminates the liquid crystal panel 222 with brightness according to the supply current. The liquid crystal panel 222 generates a light image according to the drive signal from the projection control circuit 224. The projection optical system 221 projects the light image emitted from the liquid crystal panel 222 toward the printing paper 14 or the cover 12. The projection control circuit 224 sends a control signal to the LED light source 223 and the liquid crystal panel 222 according to an instruction from the CPU 101. When the cover 12 is in the storage position shown in FIG. 1B, the CPU 101 does not project the projection unit 220.

  In this embodiment, a reflective liquid crystal panel is used as the liquid crystal panel 222 as shown in FIG. A transmissive liquid crystal panel may be used as the liquid crystal panel 222. Note that a DMD can be used instead of the liquid crystal panel 222.

  The CPU 101 also performs a trapezoidal distortion correction process for correcting the trapezoidal distortion of the projected image projected by the projection unit 220. At the time of projection by the projection unit 220, projection data subjected to trapezoidal correction processing is sent to the projection control circuit 224.

  The printer 10 prints images and text. The image is stored in the reproduction image of the image file recorded on the attached memory card 150, the reproduction image of the image file transmitted from the external device via the external interface circuit 104, and the hard disk drive (HDD) 106. The designated image is printed out of the reproduced images of the current image file. The text prints text information recorded on the memory card 150, text information transmitted from an external device, and the like.

  Details of the projection unit 220 will be described with reference to FIGS. 3 and 4. FIG. 3 is an enlarged view of the optical system of the projection unit 220. 4 is a view of the optical system of FIG. 3 as viewed from the left side, and the projection optical system 21 is omitted.

  The optical system of the projection unit 220 is configured as a quadrangular prism-shaped module (hereinafter referred to as a module) whose bottom surface is a substantially square having a side of about 10 mm. The module is disposed vertically (up and down) in the longitudinal direction, and the chassis 15 of the main body 11 (FIG. 1) made of a metal having high thermal conductivity and the bottom surface (lower surface) are joined. 3 and 4 show the size of the rectangular column in the longitudinal direction longer than the actual size for easy understanding of the internal configuration.

  The module includes a white LED 223 (LED substrate 230), a condensing optical system 224, a polarizing plate 225, a PBS (polarizing beam splitter) block 226, a liquid crystal panel 222, and a projection optical system 221. Of the above members, members other than the projection optical system 221 are integrally formed in the shell member 231. Specifically, the LED substrate 230 is disposed on the lower open surface of the member 231 obtained by bending an aluminum thin plate member. The LED substrate 230 is made of an aluminum substrate, and an LED 223 that is a light emitting element is mounted on a pattern formed on an insulating layer of the substrate.

  Further, the condensing optical system 224 and the PBS block 226 are bonded to the shell member 231. The PBS block 226 is a polarization beam splitter in which a polarization separation unit 226a that forms an angle of 45 degrees with respect to an incident optical axis is sandwiched between two triangular prisms. The surface 226b of the PBS block 226 is subjected to an antireflection process such as a black process, for example.

  A polarizing plate 225 is disposed on the lower surface of the PBS block 226 (the surface on the condensing optical system 224 side), and a liquid crystal panel 222 composed of a reflective liquid crystal element (LCOS) is disposed on the upper surface of the PBS block 226. Established.

  The chassis 15 constitutes a frame of the main body 11. The chassis 15 and the LED substrate 230 are surface-bonded so as to improve heat conduction from the heat generating member (the LED substrate 30 in this embodiment). Specifically, a filler having high thermal conductivity is filled between the surface of the chassis 15 and the LED substrate 30, or a thermally conductive sealing member is sandwiched. By forming an efficient heat conduction path, the temperature rise of the projection unit 220 is suppressed.

  In the module having the above configuration, a drive current is supplied to the LED 223 on the LED substrate 230 via a harness and a pattern (not shown). The LED 223 emits light with brightness according to the drive current toward the condensing optical system 224. The condensing optical system 224 converts the LED light into substantially parallel light and enters the polarizing plate 225. The polarizing plate 225 converts (or extracts) incident light into linearly polarized light, and emits the converted (or extracted) polarized light toward the PBS block 226.

  A polarized light beam (for example, P-polarized light) incident on the PBS block 226 passes through the PBS block 226 and illuminates the liquid crystal panel 222. The liquid crystal panel 222 includes a plurality of pixels on which red, green, and blue filters are formed, and is driven to generate a color image. When the light transmitted through the liquid crystal layer of the liquid crystal panel 222 is incident on the liquid crystal panel 222, the light travels upward in the liquid crystal layer, is reflected by the reflection surface of the liquid crystal panel 222, and then travels downward in the liquid crystal layer to liquid crystal. The light is emitted from the panel 222 and is incident on the PBS block 226 again. Since the liquid crystal layer to which a voltage is applied functions as a phase plate, the light incident on the PBS block 226 again is a mixed light of modulated light that is S-polarized light and unmodulated light that is P-polarized light. The PBS block 226 reflects (folds) only the modulated light, which is the S-polarized component, of the re-incident light beam by the polarization separation unit 226a, and emits the light toward the left projection optical system 221 as projection light.

<Main processing>
Hereinafter, the flow of the printing operation will be described with reference to the flowchart of FIG. FIG. 5 is a flowchart illustrating the main process performed by the CPU 101. 5 starts when the main switch of the printer 10 is turned on.

  In step S51 of FIG. 5, the CPU 101 performs mode selection and proceeds to step S52. The printer 10 has a still image printing mode and a moving image printing mode. The CPU 101 sets the still image mode when an operation signal instructing the still image mode is input from the operation member 103, and sets the moving image mode when the operation signal instructing the moving image mode is input.

<Still image mode>
A case where the still image mode is set will be described. In step S52, the CPU 101 is created in a folder (memory card 150, memory 102 storing data transmitted from an external device, or hard disk drive (HDD) 106 instructed by an operation signal from the operation member 103. The thumbnail image is projected on the projection unit 220 for the still image file (for example, the format indicated by “.JPG”) stored in the program, and the process proceeds to step S53. Specifically, the data of each thumbnail image is read out and developed in a predetermined area on the memory 102, and the developed data is sent to the projection control circuit 224 and the projection control circuit 224 is instructed to project.

  FIG. 7 is a diagram illustrating a projected image on the printing paper 14 set on the cover 12. In FIG. 7, a plurality of thumbnail images are projected side by side. When there are nine or more thumbnail images, the projection page is switched to project nine images at a time. The CPU 101 projects a cursor (a thick frame in FIG. 7) on the thumbnail image at the position designated by the operation signal from the operation member 103 (for example, a cross key). Note that the number of thumbnail images to be projected simultaneously is not limited to the nine images illustrated, and may be four images or 20 images.

  When an operation signal instructing projection for each image is input from the operation member 103, the CPU 101 switches to the projection image illustrated in FIG. According to FIG. 8, a thumbnail image corresponding to one of the still image files is projected while being greatly extended. The CPU 101 sequentially switches thumbnail images to be projected in response to an operation signal from the operation member 103 (for example, a cross key). When an operation signal instructing projection of 9 images per screen is input from the operation member 103, the CPU 101 switches to the projection image illustrated in FIG.

  In step S53, the CPU 101 determines whether a selection operation has been performed. When an operation signal from the operation member 103 (for example, an OK button) is input, the CPU 101 makes a positive determination in step S53 and proceeds to step S54. When an operation signal from the OK button is not input, the CPU 101 makes a negative determination in step S53. Then, the process proceeds to step S59.

  In step S54, the CPU 101 causes the projection unit 220 to project the selected image and proceeds to step S55. Specifically, when the projection image illustrated in FIG. 7 is being projected, the main image of the image file corresponding to the thumbnail image on which the cursor is superimposed when the operation signal from the OK button is input is selected as the selected image. To do. Further, when the projection image illustrated in FIG. 8 is being projected, the main image of the image file corresponding to the thumbnail image being projected at the time when the operation signal from the OK button is input is selected. The CPU 101 reads out the selected image, that is, the main image data to be printed, expands it in a predetermined area on the memory 102, sends the expanded data to the projection control circuit 224, and instructs the projection control circuit 224 to perform projection. To do.

  FIG. 9 is a diagram illustrating a projected image on the printing paper 14 set on the cover 12. In FIG. 9, a frame 91 indicating the size of the printing paper and a frame 92 indicating the print range are respectively included in the projection contents, and the size of the projected image is controlled to be smaller than the print size. The CPU 101 projects the projection conditions (for example, the paper size, the printing magnification, the printing position (printing paper margin), the color of the printing color, the density of the printing, etc.) used in the printer unit 120 in a projected image. To the projection control circuit 224. Note that the reproduction of the printing conditions by the projected image may reproduce only the instructed item among the above items.

  When the CPU 101 receives a signal from the print control circuit 123 indicating that the printing paper 14 is not set on the cover 12, an abnormal feeding of the printing paper 14, or a low ink remaining amount, the selected image is used instead of the selected image. Warning information about printing is projected on top of the other. The warning information included in the projected image may be a message or a mark.

  In step S55, the CPU 101 determines whether or not an operation for changing the printing condition has been performed. When an operation signal from the operation member 103 (for example, the MENU button) is input, the CPU 101 makes an affirmative determination in step S55 and proceeds to step S56. When an operation signal from the MENU button is not input, the CPU 101 makes a negative determination in step S55. Then, the process proceeds to step S57.

  In step S56, the CPU 101 transmits print condition change information to the print control circuit 123 in response to the MENU operation signal from the operation member 103, and the process proceeds to step S57. Note that if the determination in step S55 is negative, the print control circuit 123 uses default print conditions, so information transmission to the print control circuit 123 is not necessary.

  In step S57, the CPU 101 determines whether a print instruction operation has been performed. If an operation signal is input from the operation member 103 (for example, an OK button), the CPU 101 makes a positive determination in step S57 and proceeds to step S58. If an operation signal is not input from the OK button, the CPU 101 makes a negative determination in step S57. Return to S51.

  In step S58, the CPU 101 performs a printing process and proceeds to step S59. Details of the printing process will be described later. In step S59, the CPU 101 determines whether an end instruction has been issued. When the operation signal instructing the end is input from the operation member 103, the CPU 101 makes an affirmative determination in step S59 to end the processing in FIG. 5 and when the operation signal instructing the end is not input from the operation member 103. A negative determination is made in step S59, and the process returns to step S51.

<Print processing>
Details of the printing process in the still image mode will be described with reference to a flowchart illustrated in FIG. In step S61 in FIG. 6, the CPU 101 instructs the print control circuit 123 to start printing and proceeds to step 62. Specifically, the main image data expanded in a predetermined area on the memory 102 as a selected image is sent to the print control circuit 123.

  In step S62, the CPU 101 instructs the projection control circuit 224 to project a black image and proceeds to step S63. As a result, the projected image illustrated in FIG. 9 is once blacked out and does not include print information (selected image). A projection other than black (for example, blue) may be used. In step S63, the CPU 101 instructs the projection control circuit 224 to perform projection for the first line of the selected image, and the process proceeds to step S64. The projection width for one line is controlled to be substantially equal to the printing width for one line printed on the printing paper 14 by the printer unit 120.

  In step S64, the CPU 101 determines whether or not printing for one line has been completed. When the signal indicating the end of printing for one line is input from the print control circuit 123, the CPU 101 makes an affirmative determination in step S64 and proceeds to step S65. If the signal indicating the end of printing for one line is not input, the CPU 101 performs the step. A negative determination is made in S64, and the determination process is repeated.

  In step S65, the CPU 101 instructs the projection control circuit 224 to perform projection with the next one line added to the selected image being projected, and the process proceeds to step S66. Thereby, the print information (selected image) included in the projection image is widened by one line.

  In step S <b> 66, the CPU 101 determines whether or not printing of one line has been completed. When the signal indicating the end of printing for the next line is input from the print control circuit 123, the CPU 101 makes an affirmative determination in step S66 and proceeds to step S67 when the signal indicating the end of printing for one line is not input. Makes a negative determination in step S66 and repeats the determination process.

  In step S <b> 67, the CPU 101 determines whether all lines are being projected for the selected image. If a signal indicating that all lines are being projected from the projection control circuit 224 (that is, the entire print information is included in the projection image) is input from the projection control circuit 224, the CPU 101 makes an affirmative decision in step S67 and proceeds to step S68. If a signal indicating that all lines are being projected is not input, a negative determination is made in step S67 and the process returns to step S65.

  FIG. 10 is a diagram illustrating a projected image that is expanded line by line. In synchronization with the printing speed in the printer unit 120, the selected image included in the projection image is added line by line from the first line, and the range of the selected image is gradually expanded. As the range of the selected image expands, the blackout area included in the projection image is gradually reduced.

  In step S68 of FIG. 6, the CPU 101 determines whether or not printing is finished. The CPU 101 prints all lines, and when a signal indicating the end of the discharge of the printing paper 14 is input from the print control circuit 123, the CPU 101 makes an affirmative decision in step S68 and ends the projection to the projection control circuit 224 (LED 223 is turned off). Is terminated, and the process shown in FIG. If the signals indicating the end of printing of all lines and the end of paper discharge are not input, the CPU 101 makes a negative determination in step S68 and repeats the determination process.

<Movie mode>
A case where the moving image mode is set will be described. In step S52 of FIG. 5, the CPU 101 designates the folder (in the memory card 150, the memory 102 storing the data transmitted from the external device, or the hard disk drive (HDD) 106 instructed by the operation signal from the operation member 103. (For example, the format indicating the extension “.MOV”), an image representative of a plurality of frames constituting each moving image (for example, the first image) is stored. Projection is performed on the projection unit 220.

  FIG. 11 is a diagram illustrating a projected image on the printing paper 14 set on the cover 12. In FIG. 11, representative images for a plurality of moving image files are projected side by side. When there are nine or more representative images (that is, moving image files), the projection page is switched and nine images are projected. The CPU 101 projects a cursor (a thick frame in FIG. 11) on the representative image at the position designated by the operation signal from the operation member 103 (for example, a cross key). The number of representative images to be projected simultaneously is not limited to the nine illustrated.

  Similarly to the still image mode, when an operation signal instructing projection of each image is input from the operation member 103, the projection image is switched to the same projection image as in FIG. That is, the representative image corresponding to any one moving image file is greatly extended and projected. In this case, the CPU 101 sequentially switches the representative images to be projected according to an operation signal from the operation member 103 (for example, a cross key). Further, when an operation signal instructing projection of 9 images per screen is input from the operation member 103, the CPU 101 switches to the projection image illustrated in FIG. 11 again.

  In the moving image mode, the printer unit 120 prints a representative image of the moving image file while the selected moving image file is operated and reproduced (projected) by the projection unit 220.

  FIG. 12 is a diagram illustrating a projected image on the printing paper 14 projected in step S54 of FIG. 5 in the moving image mode. In FIG. 12, a frame indicating the size of the printing paper and a frame indicating the print range are included in the projection content, and the size of the projected image is controlled to be smaller than the print size. The CPU 101 projects the print conditions (for example, paper size, print magnification, print position (print paper margin), print color tint, print color shade, etc.) used by the printer unit 120 in a projected image. The condition is instructed to the projection control circuit 224. Note that the reproduction of the printing conditions by the projected image may reproduce only the instructed item among the above items.

<Print processing>
Details of the printing process in the moving image mode will be described with reference to a flowchart illustrated in FIG. In step S71 of FIG. 13, the CPU 101 instructs the projection control circuit 224 to start moving image reproduction of the moving image file selected as a printing (projection) target, and proceeds to step S72. Specifically, the frame images constituting the moving image file are sequentially developed in a predetermined area on the memory 102, and the image data of the top frame is sequentially transmitted to the projection control circuit 224 (for example, the frame rate is 30 frames / second). Thereby, the projection unit 220 starts moving image reproduction in order from the top frame.

  In step S72, the CPU 101 instructs the print control circuit 123 to print a representative image, and the process proceeds to step S73. Specifically, representative image data developed in a predetermined area on the memory 102 is sent to the print control circuit 123.

  In step S73, the CPU 101 determines whether or not the moving image reproduction has been completed. If a signal indicating the end of projection of the last frame is input from the projection control circuit 224, the CPU 101 makes a positive determination in step S73 and proceeds to step S74. If a signal indicating the end of projection of the last frame is not input, step S73 is performed. A negative determination is made and the determination process is repeated.

  In step S74, the CPU 101 determines whether or not printing is finished. When the CPU 101 prints the representative image and a signal indicating the end of the discharge of the printing paper 14 is input from the print control circuit 123, the CPU 101 makes an affirmative determination in step S74 and ends the projection to the projection control circuit 224 (LED 223 is turned off). The process shown in FIG. If the signals indicating the end of printing and the end of paper discharge are not input, the CPU 101 makes a negative determination in step S74 and repeats the determination process.

According to the first embodiment described above, the following operational effects can be obtained.
(1) The printer 10 includes the printer unit 120 and the projection unit 220, and before the printer unit 120 starts printing the print target image, the print target image is projected onto the projection unit 220 (step S54). Thereby, the operator can determine whether or not to cause the printer 10 to print after confirming the details of the print image (print target image) in advance from the large projection image.

(2) The projection unit 220 projects the print target image on the cover 12 (or on the set printing paper 14), not on the printing paper 14 being printed. Since the surface to be projected is different from the surface to be printed, the projection by the projection unit 220 can be continued not only before printing by the printer unit 120 but also during printing and after printing. Further, since the printing paper 14 has a lot of white, it is easier to check the hue as compared with the case of projecting on a color background.

(3) Since the projected image is projected toward the cover 12 constituting a part of the housing of the printer 10, there is no need to provide a dedicated projection screen. Since the cover 12 is configured to rotate to the storage position (FIG. 1B) about the rotation axis O, it can be stored compactly.

(4) Since the size of the projection image by the projection unit 220 is controlled to be smaller than the printing range by the printer unit 120, there is no possibility that the projection image protrudes from the actual size of the printing paper 14.
(5) Since the optical image projected by the projection unit 220 includes a frame indicating the range of the printing paper 14 and a frame indicating the printing range by the printer unit 120, the print margin is confirmed in advance by the projection image. Can do.

(6) Since the projection condition of the projected image by the projection unit 220 is controlled so as to reproduce the printing conditions (paper size, printing magnification, printing position, printing color shade, printing shade) used in the printer unit 120, The printed image (printing status) can be confirmed in advance by the projected image.

(7) During printing by the printer unit 120, an optical image indicating the printing progress state (for example, a projected image in which the range of the print target image gradually widens) is projected from the projection unit 220 (steps S62 to S67). ). As a result, the operator can know the printing progress state from the projected image.

(8) The projected image projected from the projection unit 220 during printing by the printer unit 120 is once blacked out after printing is started, and then is projected from the projection unit 220 every time one line is printed as the printing of the printer unit 120 proceeds. Since the range of the print target image to be projected is controlled to be expanded by one line, it is possible to show in real time how far printing has progressed.

(9) When printing by the printer unit 120 is completed, the projection by the projection unit 220 is controlled to be terminated, so that it is possible to reliably notify the end of printing.
(10) Since warning information indicating an abnormality in feeding of the printing paper 14 or a decrease in the remaining amount of ink is included in the projection image projected from the projection unit 220 during printing by the printer unit 120, the fact that an abnormality has occurred immediately I can inform you.

(11) The printer 10 includes the printer unit 120 and the projection unit 220, and the projection unit 220 causes the printer unit 120 to print images instructed while projecting a plurality of thumbnail images (steps S52 to S58). . As a result, the operator can instruct a print target image while viewing a plurality of large projected images.

(12) Since the projection unit 220 projects a plurality of thumbnail images reproduced using a plurality of image data side by side, the operator views an image to be printed while viewing a plurality of large projected images at a time. I can tell you.

(13) Since the projection unit 220 enlarges a plurality of thumbnail images reproduced using a plurality of image data and projects the thumbnail images one by one in order, the operator confirms the images projected in order in order. The image to be printed can be instructed.

(14) Since the hard disk drive (HDD) 106 is provided in the printer 10 and a plurality of thumbnail images reproduced using the image data stored therein is projected, the operator can The image to be printed can be instructed from

(15) Since the image data printed by the printer 10 in the past is stored in the hard disk drive (HDD) 106, it is not necessary to read the image data from the outside to the printer 10 every time printing is performed, and reprinting can be easily performed. It can be carried out.

(16) Since the instruction of the print target image is received by the operation signal from the operation member 103, the operator operates the operation member 103 while sequentially checking the large projected images, and the printer 10 receives the print target image. Directly specify the image.

(17) Since the instruction of the image to be printed is received by the operation signal from the electronic camera 100, the operator operates the operation member of the electronic camera 100 while sequentially checking the large projected images, and the printer 10 The image to be printed can be instructed from a position away from.

(18) The printer 10 including the printer unit 120 and the projection unit 220 has a moving image print mode for printing or projecting an image of a moving image file, and a still image print mode for printing or projecting an image of a still image file, The printer unit 120 and the projection unit 220 are controlled according to the selected print mode. Thereby, an image can be appropriately output regardless of a still image or a moving image.

(19) The printer 10 selects the moving image print mode when the instructed print target image is included in the moving image file, and the still image print mode when the instructed print target image is included in the still image file. Added automatic selection. As a result, the operation of selecting the print mode according to the print target image can be eliminated.

(20) In the moving image printing mode, since the moving image instructed as the print target image by the projection unit 220 is reproduced and projected, the moving image can be output as a projected image. In addition, since the representative image of the moving image instructed as the print target image by the printer unit 120 is printed, one frame of the moving image can be output as the print image.

(21) Since the printer unit 120 starts printing after receiving the printing instruction (Yes in step S57), the printing process does not start while the operator is checking the projected image.

(Modification 1)
The flowchart of FIG. 5 illustrates the flow of processing when images to be printed are selected one by one and the selected images are printed one by one. Instead of this, a plurality of images to be printed may be selected collectively, and the selected plurality of images may be printed together.

(Modification 2)
In the still image mode, the following operation may be performed in addition to the above-described operation. When the CPU 101 sets the still image mode in the mode selection process in step S51, the CPU 101 further selects and sets any one of the still image mode 1 to the still image mode 3 according to the operation signal from the operation member 103. .

  The still image mode 1 is a mode for performing the operation of the aspect shown in FIGS. 5 and 6 described above. Still image mode 2 is a mode in which projection by the projection unit 220 is not performed during printing in the printer unit 120. Specifically, after instructing the print control circuit 123 to start printing in step S61 in FIG. 6, the processing from step S62 to step S67 is skipped, and the projection unit 220 is instructed until the end of printing is determined in step S68. Stop projection.

  Still image mode 3 is an operation mode in which so-called “slide show” projection is performed. The CPU 101 that has selected this mode causes the projection unit 220 to sequentially project the selected images one by one at a predetermined time, and printing by the printer unit 120 is not performed.

  Note that information indicating the operation mode to be applied may be recorded in the Exif information of the image file, and the operation mode for the image file may be determined according to the recorded information. In this case, an operation for selecting and setting an operation mode to be applied from among the still image modes 1 to 3 can be made unnecessary.

  According to the modified example 2, the still image printing mode is classified into three types, that is, the still image mode 1 to the still image mode 3, and any one of them can be selected. Can be output, and the mode of output can be selected.

  In the still image mode 3, since the selected images are projected one by one by the projection unit 220, only the image desired by the operator can be continuously output as a projection image.

(Modification 3)
Even in the moving image mode, the following operation may be performed in addition to the above-described operation. When the CPU 101 sets the moving image mode in the mode selection process of step S51, the CPU 101 further sets any one of the moving image mode 1 to the moving image mode 3 according to the operation signal from the operation member 103.

  The moving image mode 1 is a mode for performing the operation of the aspect shown in FIGS. 5 and 13 described above. The moving image mode 2 is an operation mode in which the selected moving image file is only operated and reproduced (projected) by the projection unit 220 and is not printed by the printer unit 120. Specifically, in FIG. 13, step S72 and step S74 are skipped, and only step S71 and step S73 are executed.

  In the moving image mode 3, while the selected moving image file is operated and reproduced (projected) by the projection unit 220, the generation timing of the operation signal is set according to the print instruction (operation signal from the operation member 103) during the reproduction of the moving image. This is an operation mode in which the printer unit 120 prints images of predetermined frames before and after the sandwiching.

  Details of the printing process in the moving image mode 3 will be described with reference to a flowchart illustrated in FIG. In step S81 in FIG. 14, the CPU 101 instructs the projection control circuit 224 to start moving image reproduction of the moving image file selected as the print (projection) target, and proceeds to step S82. Thereby, the projection unit 220 starts moving image reproduction in order from the top frame.

  In step S82, the CPU 101 determines whether or not a print frame is instructed during moving image reproduction. When an operation signal is input from the operation member 103, the CPU 101 makes an affirmative determination in step S82 and proceeds to step S83. If an operation signal is not input, the CPU 101 makes a negative determination in step S82 and proceeds to step S86.

  In step S83, the CPU 101 instructs the print control circuit 123 to print an image for a predetermined frame (for example, 8 frames), and proceeds to step S84. Specifically, print control is performed on the latest four frames (projected) image data expanded in a predetermined area on the memory 102 and four frames (pre-projection) image data expanded on the memory 102 immediately thereafter. The data is sequentially sent to the circuit 123. As a result, the printer unit 120 prints four frames before and after the print frame instruction (print start instruction) timing.

  In step S84, the CPU 101 determines whether or not the moving image reproduction has ended. When the signal indicating the end of projection of the last frame is input from the projection control circuit 224, the CPU 101 makes an affirmative determination in step S84 and proceeds to step S85. When the signal indicating the end of projection of the last frame is not input, the CPU 101 proceeds to step S84. A negative determination is made and the determination process is repeated.

  In step S85, the CPU 101 determines whether or not printing is finished. The CPU 101 prints an image for a total of 8 frames, and when a signal indicating the end of the discharge of the printing paper 14 is input from the print control circuit 123, the CPU 101 makes an affirmative determination in step S85 and ends the projection to the projection control circuit 224 (LED 223). 14 is terminated, and the process of FIG. 14 is terminated. If the signals indicating the end of printing and the end of paper discharge are not input, the CPU 101 makes a negative determination in step S85 and repeats the determination process.

  In step S <b> 86 which proceeds after making a negative determination in step S <b> 82, the CPU 101 determines whether or not the moving image reproduction has ended. When a signal indicating the end of projection of the last frame is input from the projection control circuit 224, the CPU 101 makes an affirmative decision in step S86, instructs the projection control circuit 224 to end projection (the LED 223 is turned off), and ends the process of FIG. To do. An affirmative decision is made in step S86 if no print frame is designated. If the signal indicating the end of projection of the last frame is not input, the CPU 101 makes a negative determination in step S86 and returns to step S82 to wait for a print frame instruction.

  According to the third modification, since the moving image printing mode is classified into three types of moving image mode 1 to moving image mode 3 and any one of them can be selected, it can be output as a projection image or output as a print image. Or select the output mode.

  In the moving image mode 3, since the printer unit 120 prints a total of eight frames immediately before and after the timing when the print frame is instructed during playback and projection of a moving image from the projection unit 220, the desired cut by the operator is performed. A plurality of print images can be output so as to include them.

  Note that information indicating the operation mode to be applied may be recorded in the Exif information of the image file, and the operation mode for the image file may be determined according to the recorded information. In this case, an operation for selecting and setting an operation mode to be applied from the moving image mode 1 to the moving image mode 3 can be made unnecessary.

(Modification 4)
In the still image mode 1, the print information (selected image) included in the projection image by the projection unit 220 is expanded line by line according to the printing status by the printer unit 120 (FIG. 10). On the contrary, the print information (selected image) included in the projection image by the projection unit 220 may be reduced line by line according to the printing status by the printer unit 120. In this case, the entire selected image is projected at the beginning of printing, and the print information (selected image) included in the projected image is shifted downward line by line in synchronization with the printing speed of the printer unit 120. Black out line by line from above the projected image. As the shift and the blackout area expand, the print information (selected image) included in the projection image gradually narrows. According to the fourth modification, the projected print information (selected image) appears to be sucked into the main body 11 together with the print paper 14, while the printed print paper 14 is gradually discharged to the output paper tray 13. Therefore, the operator can know in real time how far printing has progressed while feeling as if the selected image being projected has changed to print output.

(Modification 5)
In addition to changing the print information (selection image) included in the projection image by the projection unit 220 according to the printing progress state by the printer unit 120, the print information (selection image) included in the projection image is panned, tilted, or zoomed up. An effect of zooming down may be added. If the time required for printing is longer than the specified time, change the projected image by adding an effect to inform the operator that the required printing time is long, and then provide a modified projected image for operation. So as not to get bored.

(Modification 6)
The example in which the CPU 101 electronically corrects the trapezoidal distortion of the projection image by the projection unit 220 has been described. However, the shake of the projection image caused by the vibration generated during printing by the printer unit 120 may be corrected electronically. Generally, the printer 10 vibrates when the printer head 122 moves in the print line direction or when the printing paper 14 is fed. The CPU 101 corrects the projected image so as to suppress the shaking of the projected image on the printing paper 14 caused by this vibration. Specifically, coordinate information indicating the position of image data developed in a predetermined area on the memory 102 is synchronized with the moving speed, moving amount, moving direction of the printer head 122, and the feeding state of the printing paper 14. Shift a predetermined amount. As a result, the image data is electronically shifted in the memory space. The CPU 101 sends the projection data subjected to the shaking correction process during printing to the projection control circuit 224 in this way, and suppresses the unpleasant feeling given to the operator by the shaking of the projected image.

(Modification 7)
An electronic camera detects a selection operation for selecting a print target image from a plurality of thumbnail images (FIG. 7) or a representative image (FIG. 11) projected side by side using an operation signal from the operation member 103. The operation signal from 100 may be used. The electronic camera 100 in FIG. 2 has a function of wirelessly transmitting an operation signal of a cross key or menu switch to the printer 10. The CPU 101 of the printer 10 selects an image to be printed according to an operation signal received via the external interface (I / F) circuit 104. An operator carrying the electronic camera 100 can select an image to be printed from a position away from the printer 10. Note that the operation signal may be transmitted from the electronic 100 to the printer 10 by wired transmission.

(Second embodiment)
The printer may have an imaging function, and an operation detection for selecting a print target image using an image captured by the printer may be performed. FIG. 15 is a block diagram illustrating the configuration of the printer 10A in which the camera unit 320 is mounted. The same components as those in the block diagram illustrated in FIG. The CPU 101A also controls the camera unit 320 in addition to the control of the printer unit 120 and the projection unit 220.

  The camera unit 320 includes an imaging optical system 331, an imaging element 322, and an imaging control circuit 323, and captures a projection image by the projection unit 220 in accordance with an instruction from the CPU 101A. The image pickup optical system 321 and the image pickup element 322 are arranged side by side in the vicinity of the projection unit 220 in FIGS. 1A and 1B, for example.

  The imaging optical system 321 forms a subject image (a projection image on the printing paper 14 set on the cover 12 in this example) on the imaging surface of the imaging element 322. As the image sensor 322, a CCD or CMOS image sensor is used. The imaging control circuit 323 drives and controls the imaging element 322 according to an instruction from the CPU 101A, and detects a change in the captured image with a built-in image change detection circuit (not shown). Specifically, with respect to the captured image output from the image sensor 322 at predetermined intervals (for example, 15 frames / second), it is determined whether there is a difference in image data between temporally continuous frame images.

  The operator of the printer 10 </ b> A holds his hand in the space between the printing paper 14 and the projection unit 220 while projecting the thumbnail image (representative image) and blocks a part of the projected light beam. Thereby, since the operator's hand is included in the newly captured frame image, there is a difference from the previous frame image (the image changes).

  The imaging control circuit 323 divides the captured image into a plurality of regions (preferably corresponding to the thumbnail image being projected), and the difference between the latest frame image and the previous frame image is determined for each divided region (referred to as a block). It is determined whether or not a predetermined value is exceeded. When the imaging control circuit 323 detects a block in which a difference between frames exceeds a predetermined value, the imaging control circuit 323 checks whether or not the state continues for, for example, 0.5 seconds or more. When the imaging control circuit 323 determines that a change has continuously occurred in the same block with respect to the detected image of at least 8 consecutive frames thereafter (that is, 0.5 for the same block). If the hand has been imaged continuously for more than a second), it is determined that the image to be printed has been instructed, and a signal indicating the block is sent to the CPU 101A.

  The CPU 101A that has received the signal indicating the block detects the print target image by comparing the projection image (a plurality of images illustrated in FIG. 7) instructed to the projection control circuit 224 with the signal transmitted from the imaging control circuit 323. To do. For example, when the signal from the imaging control circuit 323 indicates the lower left block of the projection screen, the CPU 101A uses the lower left thumbnail image (representative image) projected on the projection unit 220 as the selected image.

  On the other hand, for the block detected by the imaging control circuit 323, when it is determined that the change does not occur in the same block during the subsequent seven frames (that is, the same block before 0.5 seconds elapses). If the hand is no longer imaged, it is determined that the image to be printed is not instructed, and no signal is sent to the CPU 101A.

According to the second embodiment described above, the following operational effects can be obtained.
(1) The printer 10 </ b> A having the projection unit 220 includes the camera unit 320, and images projected by the projection unit 220 are captured at predetermined intervals by the camera unit 320. The printer 10 </ b> A detects a change in the image that occurs when a hand is included in the captured frame image, and determines that an image selection operation has been performed. As a result, the operator can send an instruction to the printer 10A by holding his / her hand so as to block the projected light beam (shown on the camera unit 320) while viewing the projected image.

(2) The printer 10A projects an optical image in which a plurality of thumbnail images are arranged from the projection unit 220, compares the block in which the change of the image is detected and the projection image as in (1), and corresponds to the detection block. A thumbnail image projected at the position is set as a print target image. The operator can use the image to be printed among the plurality of projected thumbnail images as a target, and can use it as a guide for the space where the hand is held up. Furthermore, since the change of the image is detected in units of blocks, the amount of calculation can be reduced as compared with the case where the entire area of the image is detected.

(3) Since it is determined that the image to be printed has been instructed when a hand or the like is captured in the detection block for 0.5 seconds or longer, even if the hand is accidentally placed in front of the camera unit 320, an error is immediately detected. It will not be judged.

(Modification 8)
The printer 10 that does not include the camera unit 320 and the electronic camera 100 may be combined to perform a selection operation detection similar to that of the second embodiment. FIG. 16 is a block diagram illustrating the configuration of the printer system in this case. The printer 10 and the electronic camera 100 are connected by wire through an external interface circuit 104.

  The electronic camera 100 is set in a direction for capturing a projection image by the projection unit 220. Further, the electronic camera 100 sequentially transmits image data captured at predetermined intervals (for example, 15 frames / second) to the printer 10.

  As in the second embodiment, the CPU 101 of the printer 10 determines whether there is a difference in image data between frame images that are temporally continuous with respect to the image transmitted from the electronic camera 100. Detects selection operations.

  According to the modified example 8, by combining the printer 10 that does not include the camera unit 320 and the electronic camera 100, it is possible to provide a printer system that detects the position of the hand held by the operator and selects an image to be printed.

(Modification 9)
The present invention can also be applied to a printer having a scanner function. FIG. 17 is a diagram illustrating a printer 10B according to the ninth modification. The printer 10B includes a main body 11B, a cover 12B, an output paper tray 13B, and a paper feed tray 15B. A printer unit 120B and a scanner unit 400B are disposed in the main body 11B. The cover 12B also serves as a screen, and is configured to be rotatable about a rotation axis O between an open position shown in FIG. 17 and a storage position where the cover 12B is closed.

  In FIG. 17, the printing paper 14 set on the paper feed tray 15B is fed one by one to the printer unit 120B by a paper feed mechanism (not shown). The printer unit 120B prints on the printing paper 14, and discharges the printed printing paper 14 to the output paper tray 13B.

  The scanner unit 400B includes a line sensor unit 401. The line sensor unit 401 includes a lamp that illuminates a document (not shown) placed on the document placement surface 16B made of glass, and a lens array (both not shown), and moves the document while moving in the direction of the arrow. Read. The cover 12B is closed to the storage position so as to cover the document (not shown) when reading the document.

  The scanner unit 400B is further provided with a projector (projection unit 220B) and a reflection mirror 403. The projection unit 220B is configured to project an optical image toward the cover 12B in the open state when the scanner unit 400B is not used (a state in which the line sensor unit 401 is located at the standby position shown in FIG. 17). The projected light beam is bent by the reflection mirror 403 and then proceeds in the direction of the cover 12B. The cover 12B is opened at the open position during projection.

  According to the modified example 9, since the projection unit 220B projects an optical image onto the document cover 12B, the projected surface is different from the printed surface, and before printing by the printer unit 120B, both during printing and after printing. The projection by the projection unit 220B can be continued. Furthermore, there is no need to provide a dedicated projection screen, and the cover 12B can be compactly stored by rotating the cover 12B about the rotation axis O.

(Modification 10)
FIG. 18 is a diagram illustrating a printer 10C according to the tenth modification. The printer 10C includes a main body 11C, a cover 12C, a cover 12D, an output paper tray 13B, and a paper feed tray 15B. A printer unit 120B and a scanner unit 400C are disposed in the main body 11C. The cover 12C is configured to be rotatable about a rotation axis O between an open position shown in FIG. 18 and a storage position where the cover 12C is closed. The cover 12D is a translucent screen for rear projection, and is configured to be rotatable about a rotation axis O between the cover 12C and the document placement surface 16C.

  In FIG. 18, the printing paper 14 set on the paper feed tray 15B is fed one by one to the printer unit 120B by a paper feed mechanism (not shown). The printer unit 120B prints on the printing paper 14, and discharges the printed printing paper 14 to the output paper tray 13B.

  The scanner unit 400C includes a line sensor unit 401. The line sensor unit 401 is the same as that in FIG. Covers 12C and 12D are closed so as to cover a document (not shown) when the document is read.

  The scanner unit 400C is further provided with a projector (projection unit 220C). When the scanner unit 400C is not used (when the line sensor unit 401 is located at the standby position shown in FIG. 18), the projection unit 220C is an optical image toward the closed cover 12D located on the document placement surface 16C. Is configured to project rearward. The cover 12C is opened at the open position during projection. The projected image can be viewed from the opposite side (upper surface) of the projection unit 220C of the cover 12D.

  According to the modified example 10, since the projection unit 220C projects the optical image from the back onto the cover 12D positioned on the document placement surface 16, the projected surface is different from the printed surface, and printing by the printer unit 120B is performed. Of course, projection by the projection unit 220C can be continued during printing and after printing. Further, the rear projection image is easy to confirm even if the surroundings are bright.

  The above description is merely an example, and the present invention is not limited to the configuration of the above embodiment. The configurations of the first embodiment, the second embodiment, and the first to tenth modifications may be combined as appropriate.

2A and 2B are diagrams illustrating the printer according to the first embodiment, where FIG. 2A is a diagram illustrating a use position of the cover, and FIG. 2B is a diagram illustrating a storage position of the cover; FIG. 2 is a block diagram illustrating a configuration of a printer. It is the figure which expanded the optical system of the projection unit. It is the figure which looked at the optical system of FIG. 3 from the left side. It is a flowchart which illustrates the main process performed with CPU. 6 is a flowchart illustrating details of print processing in a still image mode. It is a figure which illustrates the projection image on the printing paper in still image mode. It is a figure which illustrates the projection image on the printing paper in still image mode. It is a figure which illustrates the projection image on the printing paper in still image mode. It is a figure which illustrates the projection image expanded one line at a time. It is a figure which illustrates the projection image on the printing paper in moving image mode. It is a figure which illustrates the projection image on the printing paper in moving image mode. 6 is a flowchart illustrating details of printing processing in a moving image mode. 6 is a flowchart illustrating details of printing processing in a moving image mode. It is a block diagram explaining the structure of the printer carrying a camera unit. 2 is a block diagram illustrating a configuration of a printer system. FIG. FIG. 10 is a diagram illustrating a printer according to a modification example 9. FIG. 10 is a diagram illustrating a printer according to a tenth modification.

Explanation of symbols

10, 10A, 10B, 10C ... Printer 11, 11B, 11C ... Main body 12, 12B, 12C, 12D ... Cover 14 ... Printing paper 100, 101A ... Electronic camera 101, 101A ... CPU
120, 120B ... Printer unit 220, 220B, 220C ... Projection unit 320 ... Camera unit 400B, 400C ... Scanner unit

Claims (10)

A printing unit for printing information on the substrate;
A projection unit that projects an optical image onto a position different from the position of the substrate to be printed by the printing unit;
A printer comprising: control means for projecting an optical image of information printed by the printing unit onto the projection unit before the printing unit starts the printing. A printing unit for printing information on the substrate;
A projection unit that projects an optical image toward a part of the housing;
A printer comprising: control means for projecting an optical image of information printed by the printing unit onto the projection unit before the printing unit starts the printing. The printer according to claim 1 or 2,
An operation member that emits a signal for instructing printing;
The control unit causes the printing unit to start printing when the projection unit receives the signal from the operation member during projection of the optical image of the information to be printed. In the printer as described in any one of Claims 1-3,
The printer according to claim 1, wherein the control unit controls the projection unit to make the size of the optical image smaller than a printing range of the printing unit. The printer according to claim 4.
The printer, wherein the control unit controls the projection unit so that information indicating a range of the printing medium and a range where the printing unit prints is included in the optical image. In the printer as described in any one of Claims 1-5,
The projection unit is configured to reproduce at least one of the printing color of information printed by the printing unit, the density of printing, the printing magnification, the printing position, and the size of the printing object with an optical image. A printer characterized by controlling. The printer according to claim 1.
A printing medium holding unit disposed at a position different from the printing unit and holding the printing body before printing by the printing unit;
The printer, wherein the projection unit projects the optical image toward a printing surface of the printing body held by the printing body holding means. The printer according to claim 2.
A part of the casing is disposed at a position different from the printing unit, and is a printing body holding unit that holds the printing body before printing by the printing unit,
The printer, wherein the projection unit projects the optical image toward a printing surface of the printing body held by the printing body holding means. The printer according to claim 1.
A scanner unit that scans the document;
A document cover that is disposed at a different position from the printing unit and covers the document;
The printer, wherein the projection unit projects the optical image toward the document cover. The printer according to claim 1.
A scanner unit disposed at a different position from the printing unit and reading a document;
A translucent screen placed on a surface on which the document is placed when the scanner unit is not used;
The printer, wherein the projection unit projects the optical image back toward the translucent screen.

Images