JP2000190566A - Optical print head and optical printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To finish exposure through single relative movement of a head and a recording medium by emitting light from a light source while switching a mirror through rotation. SOLUTION: Based on a mirror position signal from a photosensor 23, the timing for locating a specific filter [red(R), green(G), blue(B)] at a position for reflecting the light from an equimagnification imaging element 14 at right angle is detected. A light source (fluorescent light emitting tube 2) is driven with an image signal corresponding to the reflecting color of the mirror (R, G, B and that light is reflected on the mirror (R, G, B) to enter into a recording medium (film 3). The operation is conducted in specified order for R, G, B and the film 3 is irradiated repeatedly. For example, each color filter is turned by 120 deg. for writing a line in the main scanning direction onto the film 3. The film 3 is moved intermittently, for example, every time when a line is written and moved in the sub-scanning direction at the timing of irradiating dot-like light of RBG thus recording an image on the entire surface of the film 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a print head used for an optical writing device such as a stationary or portable printer / copier. The present invention particularly relates to an optical print head configured to write on a recording medium by switching a plurality of types of filters.

[0002]

2. Description of the Related Art Generally, an optical print head has a light source in which a large number of minute light emitting dots are arranged in a line, and the light source is moved in a direction orthogonal to the direction in which the light emitting dots are arranged. This is an apparatus that irradiates light to form a desired image on a recording medium. As the type of the light source, an element based on various light emission principles, for example, a fluorescent light emitting tube or an LED is used.

FIG. 7 is a schematic cross-sectional view schematically showing the structure of a print head used in a conventional optical writing device, for example, a portable color printer or the like. FIG. It is the top view which omitted the part and was shown.

[0004] As shown in FIG.
Numeral 0 is capable of reciprocating in the sub-scanning direction with respect to the film 102 as a recording medium disposed at a predetermined position. That is, as shown in FIG.
00 is a pair of guide shafts 10 parallel to the sub-scanning direction.
4, 104, and further connected to a wire 108 driven by a motor 106 to be able to reciprocate in the sub-scanning direction. The optical writing head 100 has a light emitting element (light source) 110.
Reference numeral 10 has a plurality of light emitting dots arranged in the main scanning direction. The light from the light emitting element 110 passes through a filter (R, G, B), which will be described later, and passes through a reflective optical element 112, an equal-magnification optical system 114, and a reflective optical element 116 to form a film 1.
02.

As shown in FIG. 7, filters R, G, and B for red (R), green (G), and blue (B) are provided on the light irradiation side of the light emitting element 110 in a switchable manner. I have. FIG.
As shown in the figure, these three filters R, G, B have a shape in which the main scanning direction is a longitudinal direction, and are mounted on a common frame 118 side by side in the sub-scanning direction. On the frame 118, a projection 120 for frame operation is provided so as to protrude in the sub-scanning direction. This protrusion 120
It is held by a guide bearing 122 and a positioning bearing 124. The positioning bearing 124 includes the spring 1
26, and engages with any one of the three notches 128 formed in the protrusion 120. Frame 1
The spring 18 is urged by a spring 130 in a predetermined direction in the sub-scanning direction. An abutting portion 132 is provided at a predetermined position on the protruding portion 120 side with the optical writing head 100 interposed therebetween, and a reset plate 13 is provided at a predetermined position on the opposite side.
4 are provided. That is, when the projection 120 of the frame 118 hits the abutting portion 132 as the optical writing head 100 moves, the frame 118 moves and the filters (R, G, B) are switched. Also, the optical writing head 100 moves in the opposite direction to the reset plate 1.
When 34 moves the shaft 136 of the positioning bearing 124, the locking of the frame 118 by the positioning bearing 124 is released, and the frame 118 is moved by the spring 130 in the direction of the butting portion 132.

Next, the film 102 having the above structure is
An operation of writing data to the memory will be described with reference to FIG. FIG. 9 is a diagram showing the writing operation to the film in the print head continuously in the order shown by the arrow. In this figure, the arrangement of the vertical diagrams shown in (a) shows the filter reset operation, (b) shows the operation from the start to the end of the exposure, and (c) shows the filter (R,
G, B). Further, in the drawing, a mark “△” of the light source 110 indicates a position of a light emitting dot row.
In the optical writing head 100, a full-color image is formed by separating an image into three primary colors of RGB and writing the image of each color on one film in a superimposed manner.

As shown in FIG. 9A, the reset plate 134 moves the shaft 136 of the positioning bearing 124 as the optical writing head 100 moves to the left. The frame 118 is moved rightward by the spring 130 and reset to the initial position. Here, the filter R is set at the light irradiation position of the light emitting element 2 (indicated by a triangle).

As shown in FIG. 9B, the optical writing head 100 moves to the right in the drawing along the sub-scanning direction. In synchronization with this, the light emitting element 110 is driven by the R (red) image signal. An R (red) image is formed on the film.

[0009] As shown in FIG.
When the image of (red) is formed, the projection 120 of the frame 118 hits the abutment 132 at the right end in the figure, the frame 118 moves, and the filter changes from R (red) to G.
(Green).

After that, the optical writing head 100 moves to the exposure start position (a) on the left side in the figure. Here, since the reset plate 134 does not contact the shaft 136 of the positioning bearing 124, the filter is not reset. Then, similarly to the above (b), the optical writing head 10
0 moves to the right in the drawing along the sub-scanning direction, and in synchronization with this, the light emitting element 110 is driven by the G (green) image signal to form a G (green) image on the film. And
Similarly to (c), at the right end in the figure, the projection 120 of the frame 118 hits the abutment 132, and the frame 11
8, the filter is switched from G (green) to B (blue).

Thereafter, the optical writing head 100 moves to the exposure start position shown in FIG. Here, since the reset plate 134 does not contact the shaft 136 of the positioning bearing 124, the filter is not reset. Then, similarly to the above (b), the optical writing head 10
0 moves to the right in the drawing along the sub-scanning direction, and in synchronization with this, the light emitting element 110 is driven by the B (blue) image signal to form a B (blue) image on the film. And
Similarly to (c), the optical writing head 100 reaches the right end in the figure, but does not move to the left any more because the filter has been switched to the leftmost side.

Thereafter, the optical writing head 100 is moved to the exposure start position (a) on the left side in FIG.
4 and the shaft 136 of the positioning bearing 124 come into contact with each other to reset the filter. This sets the filter back to R (red).

[0013]

As described above, in the conventional optical print head described above, the optical write head 1 is used.
00 is for the film 102 arranged at a predetermined position.
It is movable in the sub-scanning direction. The optical writing head 100 is configured to switch a plurality of types of filters (R, G, B) provided movably in the sub-scanning direction in accordance with the moving operation.

Therefore, in the conventional optical print head, a large space for moving the optical write head 100 must be provided.

Further, in order to switch the filters, the scanning must be repeated by the number of filters (three of RGB in the above example), and an image cannot be formed by one exposure.

Further, this filter is switched by abutting against the abutting portion 132 in accordance with the movement of the optical writing head 100, and is reset by contacting the reset plate 134 on the opposite side. A spatial margin is required which is equal to the total width in the moving direction minus the width of one filter. That is, in the case of this example, three types of filters of RGB are required, so that a space of twice or more the width in the switching direction of one filter is necessary for switching and resetting.

Further, if the structure is such that the filter is slid and switched, fine dust is generated due to friction between the filter and other members such as a casing (frame 118) for accommodating the filter and guiding the movement of the filter. I do. There is a problem that this dust enters the optical path and is reflected on the film.

Further, such a slide type switching filter has to be disposed between the light source 110 and the reflection optical element 112, and there is a problem that the entire thickness of the optical writing head 100 becomes large. Was.

An object of the present invention is to solve the above-mentioned problems caused by a movable optical writing head and a slide switching filter.

[0020]

An optical print head (4) for irradiating light from a light source (fluorescent luminous tube 2) to form an image on a recording medium (film 3) is provided. In the head, a plurality of types of mirrors (R, G, B) whose reflectivity for light in a specific wavelength region is higher than the reflectivity for light in other wavelength regions are rotatably arranged circumferentially, and Light is selectively reflected and emitted to the recording medium.

According to a second aspect of the present invention, there is provided an optical print head according to the first aspect.
The mirrors (R, G, B) are arranged at positions constituting a surface of a polygonal cylinder having the rotation axis as a central axis.

An optical print head according to claim 3 is the optical print head according to claim 1, wherein:
The plurality of mirrors are a red mirror (R) having red as a peak wavelength in a reflection wavelength range, a green mirror (G) having green as a peak wavelength in a reflection wavelength range, and blue as a peak wavelength in a reflection wavelength range. And a blue mirror (B).

The optical print head according to claim 4 is the optical print head (4) according to claim 1,
The light source is a light emitting dot (anode 11) arranged at a predetermined interval.
(2).

An optical print head according to claim 5 is the optical print head (4) according to claim 1,
The recording medium (film 3) is movable with respect to the light source (fluorescent light emitting tube 2) fixed at a predetermined position, and is prepared according to the type of the plurality of mirrors (R, G, B). The plurality of types of image signals cause the light source to emit light, the plurality of mirrors are rotated in synchronization with the light source, and the recording medium is moved in response to irradiation of light selectively reflected by the plurality of mirrors. Thus, an image is formed on the recording medium.

An optical print head according to claim 6 is the optical print head (4) according to claim 1,
The light source (fluorescent light emitting tube 2) is movable with respect to the recording medium (film 3) fixed at a predetermined position, and is prepared according to the type of the plurality of mirrors (R, G, B). By causing the light source to emit light according to a plurality of types of image signals, rotating the plurality of mirrors in synchronization with the light source, and moving the light source while irradiating light selectively reflected by the plurality of mirrors. An image is formed on the recording medium.

An optical printer (1) according to claim 7.
Has a light source (fluorescent luminous tube 2) provided with luminescent dots (anode 11) for irradiating dot-like light. Further, a red mirror (R) provided near the light source and having red as a peak wavelength in a reflection wavelength region, a green mirror (G) having green as a peak wavelength in a reflection wavelength region, and a blue mirror (G) having blue in a reflection wavelength region. A blue mirror (B) having a peak wavelength is disposed at a position constituting a surface of a polygonal cylinder (rotating body 17) having a rotation axis as a central axis so as to selectively reflect light from the light source. And a rotatable rotating mirror (15). Further, a moving means for moving a recording medium (film 3) with respect to the rotating mirror unit and the light source provided at a predetermined position is provided. Furthermore, the driving of the light source performed by the image signal of each color of red, green, and blue, and the rotation of the rotating mirror unit are performed in synchronization, and the light is selectively reflected by the red, green, and blue mirrors. A control unit (30) for forming an image on the recording medium by moving the recording medium in response to irradiation of dot-shaped light is provided.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. The optical printer 1 of the first example has an optical print head 4 including a fluorescent light emitting tube 2 as a light source and three mirrors R, G, and B arranged and rotated in a substantially triangular cylindrical shape. I have. The optical print head 4 is arranged at a predetermined position. On the other hand, by moving the color film 3 as a recording medium once in the sub-scanning direction indicated by an arrow, a full-color image can be formed. it can. For example, this optical printer 1
It is driven by a digital color image signal obtained from the image generating apparatus, and can be used as a color printer for printing an image on the color film 3.

The optical print head 4 has a motor 5 as moving means for moving the film 3 as a recording medium in a direction (sub-scanning direction) parallel to the paper surface indicated by the right arrow in FIG. . The drive of the motor 5 causes the film 3 to move with respect to the fluorescent tube 2 and the like provided at a predetermined position.
Can be moved.

The optical print head 4 has a base 6 set at a predetermined position. The fluorescent tube 2 as a light source is attached to the base 6. The fluorescent light emitting tube 2 includes an envelope formed by sealing a box-shaped container portion 8 to an anode substrate 7 made of glass. On the anode substrate 7 in the envelope, a light-transmitting anode conductor 9 and an anode 11 composed of a phosphor layer 10 applied on the anode conductor 9 are formed. Anode 11
Are a large number of light emitting dots arranged in a line or in a staggered manner at predetermined intervals along a direction (main scanning direction) perpendicular to the paper surface in FIG. In contrast to the fluorescent tube 2, the film 3 is shown in FIG.
It moves along a direction (sub-scanning direction) parallel to the paper surface indicated by the middle right arrow. The fluorescent tube 2 is driven by a driver IC 12 mounted on a circuit board.

The phosphor layer 10 of the luminescent dots of the fluorescent tube 2
Is a ZnO: Zn phosphor. Since the emission spectrum of the ZnO: Zn phosphor has a very wide range, only the light of each color of red (R), green (G), and blue (B) is reflected.
The three primary colors of R, G, and B can be extracted by different kinds of mirrors.

In the base 6, a reflecting element 13, an equal-magnification imaging element 14, and a rotating mirror section 15 are provided along the sub-scanning direction next to the fluorescent tube 2. Is provided.

Light emitted from the anode 11 (light emitting dot) of the fluorescent arc tube 2 passes through the anode conductor 9 and the anode substrate 7 and exits in a direction perpendicular to the film 3. Further, the light is reflected at a right angle by the reflection element 13, becomes a direction parallel to the sub-scanning direction, and enters the rotating mirror unit 15 via the equal-magnification imaging element 14.

The configuration of the rotating mirror unit 15 will be described with reference to FIGS. The rotating mirror unit 15 includes a red mirror R that sets red to a peak wavelength (for example, 600 nm) in a reflection wavelength range.
And green to the peak wavelength in the reflection wavelength range (for example, 530 n
m) and one blue mirror B with blue as the peak wavelength (for example, 450 nm or more) in the reflection wavelength range. The relationship between the reflectance and the wavelength of each of these mirrors is shown in the graph of FIG.

These mirrors are dichroic mirrors formed by forming a dichroic filter on a glass substrate. The non-metallic multilayer film in the visible region shows a remarkable interference color, and the reflected light and the transmitted light have different spectral characteristics.
This is called a dichroic filter and is used as a special purpose half mirror.
As described above, if the visible region is divided into three colors of RGB and the three colors are close to the optimal color, each mirror of this example can be configured.

Each mirror is attached in a predetermined order to openings provided on three surfaces of a rotating body 17 which is a hollow regular triangular cylinder. The rotating body 17 is connected to a motor 18 and rotates at an appropriate speed in synchronization with the driving of the fluorescent tube 2. Light coming from the equal-magnification imaging element 14 is reflected by a mirror (R,
G, B) and is incident on the film 3 vertically. Light components outside the reflection wavelength range of each mirror pass through the mirror and do not reach the film.

As shown in FIGS. 1 and 3, an encoder 21 is attached to the rotating shaft of the rotating body 17. The encoder 21 has three mirrors (R, G,
At positions corresponding to B), radial slits 22 are respectively provided.
Are formed. A photo sensor 23 is provided near the encoder 21. The photo sensor 23 is
It comprises a light projecting part and a light receiving part provided with the encoder 21 interposed therebetween, and detects the slit 22 of the encoder 21 to output a mirror position signal.

The optical printer 1 of this embodiment has a motor 5 as a means for moving the film 3, a motor 18 of the rotating mirror 15, and a fluorescent luminous tube 2 connected via a connector 12.
And a control circuit 30 for controlling the entire driving circuit (driver IC 50). The control unit 30 drives the motor 18 to rotate the rotary mirror unit 15 and uses the mirror position signal from the photosensor 23 to emit light from the fluorescent light emitting tube 2. The motor 5 is driven.

In this embodiment, the image is separated into red (R), green (G) and blue (B) colors, and the data constituting the image is used as image data for each color. Control means 30
Is determined by the mirror position signal from the photo sensor 23.
A position where a specific mirror (R, G, B) can reflect the light from the equal-magnification imaging element 14 at a right angle is detected. That is, at this position, the light from the equal-magnification imaging element 14 enters the mirror at an incident angle of 45 °, and the optical path 16 bends upward at right angles to reach the film. The control means 30 detects the timing at which a particular type of mirror (R, G, B) comes to such a position, and uses an image signal of a color corresponding to the reflection color of the mirror (R, G, B). The fluorescent tube 2 is driven at the above timing. The dot-like light emitted from the fluorescent light emitting tube 2 passes through the equal-magnification imaging element 14, is reflected at right angles by mirrors (R, G, B), and vertically enters the film 3. This operation is
The irradiation is performed in a predetermined order for each GB, and the irradiation is performed on the film 3. In this example, in order to write one line in the main scanning direction on the film 3, the mirror of each color rotates by 120 °.
The film 3 moves in the sub-scanning direction in synchronization with the timing of the irradiation of the RGB dot light, such that the film 3 moves intermittently each time one-line writing progresses.
The image is recorded on the entire surface of. In addition, 1 in the main scanning direction
It is preferable that the film is intermittently fed one line at a time in the sub-scanning direction every time the RGB exposure is completed for the line. However, if the rotation speed of the rotary filter unit is high and the RGB exposure can be performed sufficiently quickly, The film may be fed continuously.

Specifically, for example, when an image is formed at a speed of 10 mm / sec with a line head having a resolution of 200 dpi, the time required for one rotation of the rotary filter is 12.7 msec, and each filter of RGB is one sheet. In this case, the time per filter (per color) is 4.23 msec. The number of rotations is 78.74.
rps.

For example, one pulse is applied to the photo sensor 23
The image data of R is converted into fluorescent light in accordance with the rising position of this pulse (the output of the photosensor 23, that is, the mirror position signal) and the timing at which the light incident on the red mirror R is vertically incident on the film 3. The light is output to the anode 11 of the arc tube 2 to emit light. For the G and B images to be subsequently emitted, a pulse generated in the slit 22 of the encoder 21 is detected by the photo sensor 23 for each of the mirrors G and B, and the fluorescent light emitting tube 2 is emitted at a predetermined timing as in the case of red.
May be driven by G and B image data, respectively.

The slit 22 provided in the encoder 21 is
To generate the origin signal of the mirror position,
The position of each mirror may be detected from the elapsed time after the origin signal is generated, and image data of a corresponding color may be provided to the fluorescent light emitting tube 2 at a necessary timing.

According to the present embodiment, the fluorescent light emitting tube 2 emits light in response to image signals for each color of red, green, and blue. Are selectively reflected by the mirrors (R, G, B) and reach the film 3. Since exposure of three colors of RGB is performed for each line, a full-color image can be formed by moving the film 3 once over the entire length in the sub-scanning direction. Since the film 3 moves, there is no need to provide a space for the optical print head 4 to move. Although this example has a plurality of mirrors, the switching is not a sliding type like a conventional filter but a rotary type, so that there is no need to provide a space for sliding the mirrors. Also,
If the mirror is switched, the dust may occur due to the friction between the sliding mirror and the case. However, such a problem does not occur in the present example because the mirror is a rotary type. If the filter is a slide switching filter, it must be disposed between the optical system (reflection element 13 and imaging element 14 at the same magnification) and the fluorescent light-emitting tube 2. It can be provided in an arrangement space of a conventional optical system, such as an adjacent portion on the optical axis of the equal-magnification imaging element 14.

In the first example described above, the rotating mirror section 15 is provided behind the imaging element 14 at the same magnification in the light irradiation direction (the film 3 side). May be provided at any position on the optical path 16. For example, as in the second example of the embodiment of the present invention shown in FIG. 4, it may be provided between the fluorescent light emitting tube 2 and the imaging element 14 at the same magnification. Note that the second example shown in FIG.
The configuration other than the position is the same as that of the first example.

FIG. 5 is a diagram showing an example of the structure of the rotating mirror unit according to the present invention, and is a side view seen from a direction parallel to the rotation axis. The arrangement of the plurality of types of mirrors may be a regular polyhedron (regular polygonal prism). The width of each mirror may be as large as the size of a light emitting dot (anode) of a fluorescent tube (for example, about 80 μm). (A) is the rotating mirror unit 15 of the first example described above, which is composed of three mirrors RGB arranged in a regular triangular prism shape. As in the case of the rotating mirror section 32 in (b), they may be arranged in a regular quadrangular prism shape. In this case, there are two red mirrors R, one green mirror G and one blue mirror B, for a total of four.
This is to make up for the lack of red light. In general, the ZnO: Zn phosphor used in the fluorescent arc tube 2 has a broad spectrum, but the intensity of the red region is often slightly insufficient. In such a case, the number of the red mirrors R is increased in this case. By increasing the red exposure time in one line exposure, a color image with good color balance can be obtained.
It may be arranged in a regular hexagonal prism shape like the rotating mirror part 33 of (c). In this case, two RGB mirrors are arranged in a predetermined order.

FIG. 6 shows an optical print head in which light from the fluorescent arc tube 2 is reflected at right angles by a regular octagonal prism-shaped rotating mirror section 34, and the light reaches the film 3 directly via the imaging element 14 of equal magnification. Is shown. This example is a case where the reflection element 13 is removed from the optical print head shown in FIG. 4, and the film 3 is arranged in a posture orthogonal to the optical axis of the equal-magnification imaging element 14.

In each of the embodiments described above, the optical print head is fixed and the film moves. However, the optical print head may move with respect to the film. In such a case, there is no advantage such as a space margin by fixing the optical print head,
The advantage of using a rotating mirror instead of a slide switching filter is obtained.

In the example described above, the light source is a fluorescent light emitting tube. However, a light source based on another light emitting principle such as an FED, LED, EL, PDP, PLZT shutter + light source, LCD shutter + light source may be used.

[0048]

According to the present invention, in an optical print head for forming an image on a recording medium by radiating dot-like light from a light source, the optical print head is arranged to selectively reflect the light from the light source and rotates. Since the plurality of dichroic mirrors are provided, the above-described conventional problems are solved, and the above-described object is achieved.

That is, the light source emits light while the mirror is switched by rotation, so that one of the head and the recording medium is switched.
Exposure can be completed by the relative movement of times.

Further, by moving the recording medium while fixing the head, the space for moving the head, which has been conventionally required, is not required. Further, unlike a conventional filter of a slide switching type, a spatial margin in a direction required when a mirror is slid is not required. Due to these structural features, according to the present invention, the entire apparatus can be made smaller than before.

Further, since the head is fixed, uneven printing is less likely to occur due to an external impact.

Further, since the switching of the mirror is performed by a smooth rotation operation, dust is less likely to be generated in the sliding portion as compared with the slide switching structure applied to the conventional filter. For this reason, the problem that dust enters the optical path and appears on the film has been solved.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a first example of an embodiment of the present invention.

FIG. 2 is a reflection characteristic diagram of each mirror of the rotating mirror unit in the first example.

FIG. 3 is a perspective view showing a driving mechanism of a rotating mirror unit in the first example.

FIG. 4 is a schematic sectional view showing a second example of the embodiment of the present invention.

FIG. 5 is a side view showing a structural example of a rotating mirror section according to the present invention.

FIG. 6 is a perspective view showing a third example of the embodiment of the present invention.

FIG. 7 is a schematic sectional view schematically showing the structure of an optical print head used in a conventional optical writing device.

FIG. 8 is a plan view in which a part of the configuration of the optical print head shown in FIG. 7 is omitted.

FIG. 9 is an explanatory diagram showing a writing operation to a film in a conventional optical print head in a continuous manner in the order shown by arrows.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Optical printer 2 Fluorescent luminous tube as a light source 3 Film as a recording medium 4 Optical print head 11 Anode as a luminescent dot 15, 32, 33, 34 Rotating mirror part R, G, B mirror

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C162 AE23 AE77 FA19 FA34 FA49 5C051 AA02 CA10 DB02 DB04 DB23 DB24 DC02 DC04 DC07 DE02 DE27 EA01

Claims (7)

[Claims] 1. An optical print head for irradiating light from a light source to form an image on a recording medium, wherein a plurality of types of mirrors have higher reflectivity to light in a specific wavelength region than to light in other wavelength regions. An optical print head, which is rotatably disposed circumferentially, and selectively reflects light from the light source to irradiate the recording medium. 2. The mirror according to claim 1, wherein the plurality of types of mirrors are arranged at positions forming a surface of a polygonal cylinder about a rotation axis.
An optical printhead as described. 3. The plurality of types of mirrors include a red mirror having red as a peak wavelength in a reflection wavelength range, a green mirror having green as a peak wavelength in a reflection wavelength range, and blue as a peak wavelength in a reflection wavelength range. The optical printhead of claim 1, further comprising a blue mirror. 4. The optical printhead according to claim 1, wherein the light source is a fluorescent light emitting tube having light emitting dots arranged at predetermined intervals. 5. The recording medium is movable with respect to the light source fixed at a predetermined position, and the light source emits light by a plurality of types of image signals prepared according to the types of the plurality of mirrors. Along with this, rotating the plurality of mirrors, and forming an image on the recording medium by moving the recording medium in response to irradiation of light selectively reflected by the plurality of mirrors. The optical print head according to claim 1, wherein 6. The light source is movable with respect to the recording medium fixed at a predetermined position, and the light source emits light according to a plurality of types of image signals prepared according to the types of the plurality of mirrors. Along with this, rotating the plurality of mirrors, forming an image on the recording medium by moving the light source while irradiating light selectively reflected by the plurality of mirrors, The optical print head according to claim 1. 7. A light source provided with light-emitting dots for irradiating dot-shaped light; a red mirror provided near the light source and having red as a peak wavelength in a reflection wavelength range; and green as a peak wavelength in a reflection wavelength range. A green mirror and a blue mirror having blue as a peak wavelength in a reflection wavelength range, so that the light from the light source is selectively reflected so as to form a surface of a polygonal cylinder having a rotation axis as a central axis. A rotatable rotating mirror unit disposed at a predetermined position, a moving unit for moving a recording medium with respect to the rotating mirror unit and the light source provided at a predetermined position, and an image signal for each color of red, green, and blue. The driving of the light source to be performed and the rotation of the rotating mirror unit are performed in synchronization with each other,
An optical printer comprising: a control unit that forms an image on the recording medium by moving the recording medium in response to irradiation of dot-shaped light selectively reflected by each of the red, green, and blue mirrors.