JPH11198434A - Optical writing head, printer and image processing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a head, a printer and a system of printer and image processor in which a board and an aperture can be cooled. SOLUTION: In order to prevent deterioration of image quality due to decrease of emission caused by heat generated through flickering of LEDs 12b, 12c and 12d and to prevent a board 12a from being heated up to the melting pint of plastic composing a carriage 9, the board 12a is made of a metal plate having high thermal conductivity and means for dissipating heat of the board 12a is provided. The heat dissipating means for the board 12a has vents 31 on the opposite sides of the box type board supporting section 9a of the carriage 9 in the traveling direction thereof. Heat of an aperture 29 is dissipated through the heat dissipating means for the board 12a by making the aperture 29 of a metal plate having high thermal conductivity and supporting the aperture 29 on the carriage 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image output head device capable of cooling a substrate and an aperture forming a head, a printing device having the head device, and an image processing system having the printing device.

[0002]

2. Description of the Related Art In a conventional head device of a printing apparatus, a light emitting diode constituting a head formed on a substrate provided on a carriage guided by a carriage guide and reciprocated by a motor blinks and emits light, and a pinhole of an aperture is provided. And irradiates the print paper with a reduced light diameter. In the conventional head device, the light quantity of the light emitting diode decreases due to the heat generated by the blinking light emission of the light emitting diode, and the image quality changes. Also, the substrate and the aperture are heated at the plastic melting temperature of the carriage (for example, about 130 ° C.). )
The above-mentioned high temperature may cause the substrate supporting portion of the carriage to melt or lose its shape to change the substrate supporting state, and furthermore, the heat radiation of the aperture may cause discoloration or coloration of the printing paper.

[0003]

The present invention relates to a head device for image output capable of cooling a substrate and an aperture forming a head, a printing device having the head device, and an image processing system having the printing device. .

[0004]

According to the present invention, a light emitting element constituting a head formed on a substrate provided on a carriage guided by a carriage guide and reciprocated by a motor is emitted, and light is emitted through a pinhole of an aperture. A head device for irradiating print paper with a reduced diameter, characterized by comprising a heat radiating means for releasing heat generated by the light emitting element.

According to the present invention, a light-emitting element constituting a head formed on a substrate provided on a carriage provided on a carriage guided by a carriage guide and reciprocated by a motor emits light, and the light diameter is reduced by a pinhole of an aperture. In a head device for irradiating, the substrate and the aperture are formed from a metal plate having high thermal conductivity,
It is another object of the present invention to provide a head device including a heat radiating means for radiating heat of the substrate and the aperture.

Preferably, the present invention is characterized in that the heat radiating means for radiating the heat generated by the light emitting element is an air hole opened on both sides of the box-shaped substrate support portion of the carriage in the carriage traveling direction. A head device is provided. Preferably, the present invention provides a head device, wherein the heat radiating means for radiating heat generated by the light emitting element is a metal radiating fin having high thermal conductivity attached to the back surface of the substrate. is there.

Preferably, according to the present invention, the heat radiating means for radiating heat generated by the light emitting element has a high thermal conductivity made of a metal having a high thermal conductivity, one end of which is attached to the back surface of the substrate and the other end of which slidably contacts a carriage guide. It is intended to provide a head device characterized by being a body. Preferably, the present invention provides a head device wherein the heat transfer body is a leaf spring.

Preferably, the present invention provides a head device, wherein the heat radiating means for releasing the heat generated by the light emitting element supports the aperture formed of the metal plate having high thermal conductivity on the carriage. Is what you do.
Preferably, in the present invention, the heat radiating means for releasing heat generated by the light emitting element supports the aperture formed of the metal plate having high thermal conductivity on the carriage via a heat insulating material, and slides on the carriage guide. It is intended to provide a head device characterized by doing the above.

Further, the present invention provides a printing apparatus which emits light from a light-emitting element of a head device, irradiates the printing paper with a light beam having a reduced diameter with a pinhole of an aperture, and produces an image on the printing paper. Things. Further, according to the present invention, there is provided an image processing system wherein a printing apparatus and an image processing apparatus are connected, an image signal is transmitted and received between the image processing apparatus and the printing apparatus, and an image is generated on the print sheet. Is provided.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a schematic configuration of an image processing system having a printing apparatus and an image processing apparatus according to a first embodiment of the present invention will be described with reference to the drawings. FIG.
As shown in FIG. 3 to FIG. 3, in this system, when a power switch (not shown) is turned on to select image data stored in the image processing apparatus B and a print image output switch (not shown) is turned on, the printing apparatus A I do.

When the power switch is turned on, the motor 1 rotates at a constant speed in a direction opposite to the rotation of the clock hand. The rotation of the motor 1 is transmitted to a belt winding mechanism 8 provided on a carriage guide 7 via a gear train 2 on the motor side and a gear train 3 on the non-motor side, and the carriage is guided to engage with the carriage guide 7. 9, the carriage 9 moves to the origin position. When the carriage 9 returns to the home position, the motor 1 stops rotating.

At this time, the sensor mounting bracket 3
The barcode sensor 11 provided for the cassette C reads the barcode C1 attached to the cassette C, and specifies the type of the print paper P stored in the cassette C. At the time of printing, the light intensity or irradiation time of the light emitting diodes 12b, 12c, and 12d constituting the head provided on the carriage 9 is controlled in accordance with the type of print paper read here.

Next, when a print image output switch (not shown) is turned on, the motor 1 first rotates in the clockwise direction, and the pickup roll 4 and the feed rolls 5 and 13 rotate through the gear trains 2 and 3. Print paper P
To pay out. Paper feed check sensor 14 provided on carriage 9 and located on the downstream side of feed roll 5
Detects the leading edge of the print paper P.

When the print paper P is detected, the motor 1
Stops once and immediately rotates in the opposite direction of the clock hand. By this rotation in the opposite direction, the carriage 9 reciprocates via the belt winding mechanism 8. At the same time, the linear sensor 10 provided on the sensor mounting bracket 30 of the carriage 9 reads the scale of the linear scale 23 to detect the traveling position.

Simultaneously with the reciprocation of the carriage 9, the light emitting diodes 12b, 12c, and 12d constituting the head formed on the substrate 12a provided on the carriage 9 blink in accordance with image data input from the image processing apparatus B. Then, this light is applied to the print paper P after the light diameter is reduced by the pinhole of the aperture 29, and makes the microcapsules irradiated with light of a specific wavelength uncrushable.

While the circulating pin 15 makes a U-turn from the position b to the position c and a U-turn from the position d to the origin position a, the cam 16 pushes down the cam follower 17 by a very small size. The print paper P is fed out by about 0.2 mm in cooperation with 6, 24. On the other hand, when the circulation pin 15 linearly moves from the origin position a to the position b and linearly moves from the position c to the position d, the cam 16 releases the depression of the cam follower 17, so that the platen 19 is moved by the spring 18. The rolling roller 20 is lifted up and effectively presses the printing paper P as if drawing a straight line, and selectively crushes only the microcapsules which have not been cured by the light of a specific wavelength. By repeating this, the microcapsules on the entire surface of the print paper P are selectively crushed.

The printing paper P includes a heater 21 and a leaf spring 2.
In this case, the microcapsules are crushed and slidably contact with the color-forming substance in contact with the image-receiving layer, thereby heating and instantaneously promoting color formation to produce an image. The carriage guide 7 is formed in a channel shape with high precision linearity, and ribs on both sides are held by channel portions on both sides of the carriage 9. The substrate 12a is precisely positioned by being fitted to the carriage 9, and the light emitting diodes 12b,
12c and 12d are insulating layers 12e formed on the substrate 12a.
Is formed together with a circuit line, and is connected to the circuit line by bonding, and the circuit line is connected to a flexible printed wiring.

Reference numeral 25 denotes a controller, and reference numeral 26 denotes a controller.
Is a battery, reference numeral 27 is a chassis, and reference numeral 28 is a case. In particular, in the printing apparatus of the present invention, the heat generated by the flashing of the light emitting diodes 12b, 12c, and 12d reduces the amount of light of the light emitting diodes and changes the image quality.
2a is heated to a high plastic melting temperature (for example, about 130 ° C.) constituting the carriage 9, and if not cooled, the substrate 12a and the substrate support and the aperture of the carriage 9 melt and lose their shape. In order to avoid the situation, the substrate 12a is formed of a metal plate having high thermal conductivity, and a radiating means for releasing heat of the substrate 12d is provided.

FIG. 4 is an enlarged sectional view of a main part showing the carriage 9 guided by the carriage guide 7 and the head device 12 supported by the carriage 9. In this embodiment, the substrate 12a is formed of an aluminum plate, a stainless steel plate, a nickel plate, or another metal plate having high thermal conductivity. Means for radiating heat of the substrate 12a are air holes 31 opened on both sides of the box-shaped substrate support portion 9a of the carriage 9 in the carriage traveling direction. The air can be cooled by flowing through the inner space of the substrate supporting portion 9a of the shape and touching the rear surface of the substrate.

The means for radiating the heat of the aperture 29 includes:
The aperture 29 is formed of an aluminum plate, a stainless plate, a nickel plate, or another metal plate having a high thermal conductivity, and is supported by the carriage 9 to transfer the heat of the aperture 29 to the substrate 12.
The heat is radiated by the heat radiating means. Therefore, it is possible to air-cool so that the light amount of the light emitting diode does not decrease and the substrate supporting portion 9a and the aperture 29 are not melted or softened.

FIG. 5 is an enlarged sectional view of a main part of an image processing system having a printing apparatus and an image processing apparatus according to a second embodiment of the present invention, and corresponds to FIG. The same reference numerals are given to constituent elements. In this embodiment, the substrate 12a is formed of an aluminum plate, a stainless steel plate, a nickel plate, or another metal plate having high thermal conductivity.

The heat radiating means for the substrate 12a is provided as a composite of two heat radiating means. The first heat radiating means are air holes 31 opened on both sides of the carriage 9 in the carriage traveling direction in the box-shaped substrate supporting portion 9a of the carriage 9, and the second heat radiating means is an aluminum plate, a stainless steel plate attached to the back surface of the substrate. Fins 32 made of a metal, a nickel plate, or another metal having high thermal conductivity.

The means for radiating the heat of the aperture 29 includes:
The aperture 29 is formed of an aluminum plate, a stainless plate, a nickel plate, or another metal plate having a high thermal conductivity, and is supported by the carriage 9 to transfer the heat of the aperture 29 to the substrate 12.
The heat is radiated by the heat radiating means. Accordingly, when the carriage 9 travels, the air in the printing apparatus flows through the air holes 31 through the inner space of the box-shaped substrate supporting portion 9a to cool the radiation fins 32. The air can be cooled to a temperature at which the portion 9a and the aperture 29 do not melt or become soft.

As a modification of this embodiment, the substrate supporting portion 9a of the carriage 9 may be formed in a rib shape instead of a box shape, and the radiation fins 32 may be located outside the substrate supporting portion 9a. FIG. 6 is an enlarged sectional view of a main part of an image processing system having a printing apparatus and an image processing apparatus according to a third embodiment of the present invention, and corresponds to FIG. The same reference numerals are given.

In this embodiment, the substrate 12a is formed of an aluminum plate, a stainless plate, a nickel plate, or another metal plate having high thermal conductivity. And
The heat radiating means of the substrate 12a is provided as a composite of three heat radiating means. The first heat radiating means are air holes 31 opened on both sides of the carriage 9 in the carriage traveling direction in the box-shaped substrate supporting portion 9a of the carriage 9, and the second heat radiating means is an aluminum plate, a stainless steel plate attached to the back surface of the substrate. Fins 33 made of a metal, a nickel plate, or another metal having high thermal conductivity. The third radiating means is a heat radiating fin 33 that slides in a biased state on a carriage guide to form a heat transfer body having a spring function. Also serves as.

Therefore, when the carriage 9 travels, the air in the printing apparatus flows through the air holes 31 in the inner space of the box-shaped substrate support portion 9a to cool the radiation fins 33, and the radiation fins 33 transfer the heat of the substrate 12a to the carriage. Since the heat is transferred to the guide 7, the light amount of the light emitting diode does not decrease, and the substrate supporting portion 9 a and the aperture 29 can be air-cooled to a temperature that does not melt or become soft. It plays the role of absorbing the rattling of nine.

[0027]

As described above, according to the head device, the printing device, and the image processing system of the present invention, the substrate and the aperture can be cooled, so that the light amount of the light emitting diode is not reduced and the carriage is controlled. The substrate supporting part and the aperture can be cooled to a temperature that does not melt or become soft, and abnormal heating of the head can be avoided. .

[Brief description of the drawings]

FIG. 1 is a plan view showing an image processing system having a substantially full-size printing apparatus and an image processing apparatus according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of the printing apparatus of FIG. 1 as viewed from a side.

FIG. 3 is a cross-sectional view of the printing apparatus of FIG. 1 as viewed from a side where print paper is discharged.

FIG. 4 shows a carriage guided by a carriage guide;
FIG. 3 is an enlarged sectional view of a main part showing a head device supported by the carriage.

FIG. 5 is an enlarged sectional view of a main part of an image processing system having a printing apparatus and an image processing apparatus according to a second embodiment of the present invention.

FIG. 6 is an enlarged sectional view of a main part of an image processing system having a printing apparatus and an image processing apparatus according to a third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 1 motor 2 gear train on motor side 3 gear train 4 pickup roll C cassette C1 barcode P print paper 5 feed roll 6 pinch roll 7 carriage guide 8 belt winding mechanism 9 carriage 9a carriage substrate support 10 linear sensor 11 barcode Sensor 12a Substrate 12b, 12c, 12d Light emitting diode 12e Insulating layer 13 Feed roll 14 Paper feeding confirmation sensor 15 Circulation pin 16 Cam 17 Cam follower 18 Spring 19 Platen 20 Rolling roll 21 Heater 22 Plate spring 23 Linear scale 24 Pinch roll 25 Controller 26 Battery 27 Chassis 28 Case 29 Aperture 30 Sensor mounting bracket 31 Air hole 32 Radiation fin 33 Radiation fin

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[Procedure amendment]

[Submission date] January 19, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

Patent application title: Optical writing head device, printing device, and image processing system

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

SUMMARY OF THE INVENTION The present invention relates to a printing method.
A carriage reciprocating on paper, and a carriage provided on the carriage
Light emitting element for exposing the print paper
And a pixel for limiting the exposure dot size of the light emitting element.
The aperture having an aperture and the light emitting element generate heat.
Characterized by having heat radiating means for radiating the heat
A writing printer head is provided.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005] The invention of the present application is also directed to reciprocating printing paper.
And a heat transfer device attached to the carriage.
Provided on a substrate formed of a highly conductive metal plate,
A light emitting element for exposing the print paper,
Exposure of the light emitting element formed of a metal having high conductivity
Aperture with pinhole to limit dot size
And a radiator for radiating heat generated by the light emitting element.
The present invention provides an optical writing printer head comprising a step.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006] Preferably, the present invention, the heat radiating means for releasing the heat which the light emitting element generates heat, and having a air hole both sides opened in the carriage traveling direction of the substrate support portion of the box-shaped of the carriage Optical writing printer
A head is provided. Preferably, the present invention provides an optical writing printer head , wherein the heat radiating means for radiating the heat generated by the light emitting element has a metal radiating fin having high thermal conductivity attached to the back surface of the substrate. > To provide.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

Preferably, according to the present invention, the heat radiating means for radiating heat generated by the light emitting element has a high thermal conductivity made of a metal having a high thermal conductivity, one end of which is attached to the back surface of the substrate and the other end of which slidably contacts a carriage guide. Light characterized by having a body
A writing printer head is provided. Preferably, the present invention provides an optical writing printer head , wherein the heat transfer body is a leaf spring.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

Preferably, in the present invention, an optical writing printer head is characterized in that the radiating means for radiating heat generated by the light emitting element supports the aperture formed of the metal plate having high thermal conductivity on the carriage. Is provided. Preferably, in the present invention, the heat radiating means for releasing heat generated by the light emitting element supports the aperture formed of the metal plate having high thermal conductivity on the carriage via a heat insulating material and slides on the carriage guide. An optical writing printer head is provided.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

Further, the invention of the present application is characterized in that the light emitting element of the optical writing printer head emits light, and the light diameter is narrowed down by a pinhole of the aperture to irradiate the print paper to produce an image on the print paper. To provide a printing apparatus. Further, according to the present invention, there is provided an image processing system wherein a printing apparatus and an image processing apparatus are connected, an image signal is transmitted and received between the image processing apparatus and the printing apparatus, and an image is generated on the print sheet. Is provided.

Claims (10)

[Claims] 1. A light emitting element constituting a head formed on a substrate provided on a carriage provided on a carriage guided by a carriage guide and reciprocated by a motor, emits light, and irradiates print paper with a light diameter narrowed by a pinhole of an aperture. A head device comprising: a heat radiating unit for radiating heat generated by the light emitting element. 2. A light emitting element constituting a head formed on a substrate provided on a carriage provided on a carriage guided by a carriage guide and reciprocated by a motor, emits light, and irradiates a print sheet with a light diameter narrowed by a pinhole of an aperture. In the head device, the substrate and the aperture are formed of a metal plate having high thermal conductivity, and a radiating unit that releases heat of the substrate and the aperture is provided, and the heat generated by the light emitting element is radiated. A head device characterized in that: 3. The radiating means for radiating heat generated by the light emitting element is an air hole opened on both sides of the box-shaped substrate supporting portion of the carriage in the carriage traveling direction. Item 3. The head device according to Item 2. 4. The heat radiation means for releasing heat generated by the light emitting element is a metal heat radiation fin having a high thermal conductivity attached to a back surface of the substrate. The head device according to the above. 5. A heat dissipating means for dissipating heat generated by the light emitting element is a metallic heat conductor having a high thermal conductivity, one end of which is attached to the rear surface of the substrate and the other end of which is in sliding contact with a carriage guide. Claims 1 to 4 characterized by the following:
The head device according to item 1. 6. The head device according to claim 5, wherein the heat transfer body is a leaf spring. 7. The carriage according to claim 2, wherein the radiator for releasing heat generated by the light emitting element supports an aperture formed of a metal plate having high thermal conductivity on the carriage. Head device. 8. A heat radiating means for radiating heat generated by the light emitting element supports an aperture formed of a metal plate having high thermal conductivity on the carriage via a heat insulating material and slides on the carriage guide. 7. The head device according to claim 2, wherein: 9. A light emitting element of the head device according to claim 1, wherein the light emitting element emits light, the light diameter is reduced by a pinhole of an aperture, and the light is irradiated on the print paper to produce an image on the print paper. Printing device. 10. A printing apparatus according to claim 9, wherein the printing apparatus is connected to an image processing apparatus, an image signal is transmitted and received between the image processing apparatus and the printing apparatus, and an image is generated on the printing paper. An image processing system, comprising: