CN111077755A - Fixing device and printer thereof - Google Patents
Fixing device and printer thereof Download PDFInfo
- Publication number
- CN111077755A CN111077755A CN201811235625.0A CN201811235625A CN111077755A CN 111077755 A CN111077755 A CN 111077755A CN 201811235625 A CN201811235625 A CN 201811235625A CN 111077755 A CN111077755 A CN 111077755A
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- China
- Prior art keywords
- light
- fixing device
- light source
- pressure roller
- carbon powder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2053—Structural details of heat elements, e.g. structure of roller or belt, eddy current, induction heating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2039—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature
Abstract
The present invention provides a fixing device including: the pressure applying assembly fixes the melted carbon powder on the medium printing surface by applying pressure to the medium attached with the carbon powder; and the illumination heating unit is arranged outside the pressure applying assembly and is used for heating and melting the carbon powder attached to the medium printing surface by projecting light rays to the medium printing surface and/or projecting light rays to the pressure applying surface of the pressure applying assembly to heat the pressure applying surface to melt the carbon powder on the medium printing surface. The illumination heating unit can directly heat the carbon powder or directly heat the pressure applying surface, so that the energy loss in the middle heating process is reduced, and the energy utilization rate is effectively improved.
Description
Technical Field
The invention relates to the technical field of printers, in particular to a fixing device and a printer thereof.
Background
The printing of the laser printer needs to be performed with charge elimination, exposure and transfer printing, and finally the image is fixed on the medium, the current fixing technology generally adopts thermal fixing, generally a fixing device, also called a heating assembly, and the printing medium after the transfer printing passes through a slit between a heating roller and a pressing roller in the heating assembly, and the developer is melted and permeates into paper fibers under high temperature and high pressure, so that the fixing is realized.
In the conventional heating assembly, a halogen lamp is generally arranged in a heating roller, the temperature of the surface of the heating roller is increased by the halogen lamp to melt carbon powder, and the carbon powder is fixed on paper by combining the pressure of a pressure roller. Because the surface of the heating roller is indirectly heated, when the heat of the halogen lamp is transferred to the surface of the heating roller, the heat loss is large, therefore, when the surface of the heating roller reaches the required temperature, the heat released by the halogen lamp is required to be large, the consumed energy is large, and simultaneously, when the halogen lamp is used for heating, the whole surface of the heating roller is fully heated, therefore, the heat which runs out of the heating roller is also large, and the heat can be greatly dissipated into the printer in the conduction process, so that the heat preservation design of the fixing and the heat dissipation design of other units have high requirements, the structure is complex, the material consumption is large, and further the product cost is increased.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect of large energy consumption of the fixing unit in the prior art.
Thereby providing a fixing device including: the pressure applying assembly fixes the melted carbon powder on the medium printing surface by applying pressure to the medium attached with the carbon powder; and the illumination heating unit is arranged outside the pressure applying assembly and is used for heating and melting the carbon powder attached to the medium printing surface by projecting light rays to the medium printing surface and/or projecting light rays to the pressure applying surface of the pressure applying assembly to heat the pressure applying surface to melt the carbon powder on the medium printing surface.
Further, the illumination heating unit comprises a light source and a light condensing device covered on the light source, and the light condensing device is used for condensing and projecting light generated by the light source on the medium printing surface.
Further, the light condensing device condenses the light generated by the light source into a parallel light beam to be projected on the medium printing surface.
The light condensing device of the present invention comprises: a semi-enclosed reflective cavity having an opening disposed towards the media printing surface, the reflective cavity configured to reflect light emitted by the light source to the opening of the reflective cavity; and the lens is arranged at the opening of the reflecting cavity and used for closing the reflecting cavity and focusing the light emitted by the light source.
Further, the reflecting cavity is formed by connecting a plurality of reflecting mirrors.
Further, the light source is any one of a halogen lamp, an LED lamp, an infrared light source, or a laser emitter.
The pressing assembly is a pressing roller assembly at least provided with a pressing roller, and the pressing surface is a circumferential side wall of the pressing roller.
Further, the compression roller assembly comprises an upper compression roller and a lower compression roller tightly attached to the upper compression roller, and the pressing surface is a circumferential side wall of the upper compression roller.
The invention also comprises a driving device which drives the upper pressing roller or the lower pressing roller to rotate so as to drive the medium to be transmitted between the upper pressing roller and the lower pressing roller.
The illumination heating device further comprises a temperature sensor and a controller, wherein the temperature sensor is used for detecting the heating temperature of the illumination heating unit and feeding the heating temperature back to the controller, and the controller is used for controlling the luminous intensity of the light source to adjust the heating temperature.
A printer comprising the fixing device according to any one of the preceding claims.
The technical scheme of the invention has the following advantages:
1. the present invention provides a fixing device including: the pressure applying assembly fixes the melted carbon powder on the medium printing surface by applying pressure to the medium attached with the carbon powder; and the illumination heating unit is arranged outside the pressure applying assembly and is used for heating and melting the carbon powder attached to the medium printing surface by projecting light rays to the medium printing surface and/or projecting light rays to the pressure applying surface of the pressure applying assembly to heat the pressure applying surface to melt the carbon powder on the medium printing surface.
Compared with an indirect heating mode in the prior art that the halogen lamp is arranged in the heating roller, the illumination heating unit can directly heat the carbon powder or directly heat the pressure applying surface, so that the energy loss in the middle heating process is reduced, and the energy utilization rate is effectively improved.
2. The light heating unit in the fixing device provided by the invention comprises a light source and a light condensing device covered on the light source, wherein the light condensing device is used for condensing and projecting light generated by the light source on the medium printing surface, and the light condensing device can maximally condense the light generated by the light source on the medium printing surface, so that the utilization rate of the light source is improved, namely the utilization rate of heat generated by the light source is improved.
3. The light condensing device in the fixing device provided by the invention condenses the light generated by the light source into parallel light beams to be projected on the printing surface of the medium, so that the carbon powder attached to the medium can be uniformly heated.
4. The fixing device of the present invention is provided with the light condensing device including: the lens is arranged at the opening of the reflection cavity and used for sealing the reflection cavity and focusing light emitted by the light source, so that the illumination intensity projected on the carbon powder or the pressing surface can be effectively enhanced, and the heating speed and the heating effect are enhanced.
5. The fixing device provided by the invention comprises the temperature sensor and the controller, wherein the temperature sensor is used for detecting the heating temperature of the illumination heating unit and feeding the heating temperature back to the controller, the controller is used for controlling the luminous intensity of the light source to adjust the heating temperature, the stability of the carbon powder heating temperature is ensured by arranging the temperature sensor and the controller, and the fixing quality can be effectively ensured.
6. The invention also provides a printer which comprises the fixing device, and the fixing device has low energy consumption, and the heat dissipation amount is reduced by utilizing illumination to intensively heat, so that the heat dissipation design of the fixing part of the printer is simpler and the cost is lower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a front view of a fixing device provided in a first embodiment of the present invention;
description of reference numerals:
1-a press roll assembly; 11-upper press roll; 12-a lower press roll;
2-a light heating unit; 21-a light source; 22-a light-gathering device; 221-a mirror; 222-a reflective cavity; 223-lens.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1, the present embodiment provides a fixing device including: the pressure applying assembly fixes the melted carbon powder on the medium printing surface by applying pressure to the medium attached with the carbon powder; and the illumination heating unit 2 is arranged outside the pressure applying assembly, heats and melts the carbon powder attached to the medium printing surface by projecting light rays to the medium printing surface, and heats and melts the carbon powder on the medium printing surface by projecting light rays to the pressure applying surface of the pressure applying assembly.
Compared with an indirect heating mode in which the halogen lamp is arranged in the heating roller in the prior art, the embodiment has the advantages that the illumination heating unit directly heats the carbon powder and the pressing surface, so that the energy loss in the middle heating process is reduced, and the energy utilization rate is effectively improved.
In other embodiments, the illumination heating unit 2 is disposed at the front end of the pressing component in the advancing direction of the medium path, and only heats the carbon powder, and the heated carbon powder in a molten state is pressed into the medium by the pressing component.
In other embodiments, the illumination heating unit 2 is disposed above the pressing assembly, and directly projects light to the pressing surface to heat the pressing surface, and the heated pressing surface directly contacts with the carbon powder, thereby heating and pressing the carbon powder to complete fixing.
The light heating unit 2 in this embodiment includes a light source 21 and a light condensing device 22 covering the light source 21, and the light condensing device 22 is configured to condense and project light generated by the light source 21 onto the medium printing surface. The light condensing device can condense the light generated by the light source on the printing surface of the medium to the maximum extent, so that the utilization rate of the light source is improved, namely the utilization rate of the heat generated by the light source is improved.
The light gathering device 22 gathers the light generated by the light source 21 into parallel light beams to be projected on the medium printing surface, so that the carbon powder attached to the medium can be uniformly heated.
Further, the light condensing device 22 includes: a semi-enclosed reflective cavity 222 with an opening facing the media printing surface, the reflective cavity 222 configured to reflect light emitted by the light source 21 to the opening of the reflective cavity 222; and a lens 223 disposed at the opening of the reflective cavity 222 for sealing the reflective cavity and focusing the light emitted from the light source 21.
Further, the reflective cavity 222 is formed by connecting a plurality of reflectors 221, and a sealant is disposed between the reflectors 221 to ensure the sealing property and maximize the utilization of the light source 21.
In other embodiments, the reflector cavity 222 may be formed by an integrally formed reflector 221, which may provide better hermeticity.
The light source 21 in this embodiment is a halogen lamp.
In other embodiments, the light source may be an LED lamp, an infrared light source, or a laser emitter.
In this embodiment, the pressing component is a pressing roller component 1 having a pressing roller, and the pressing surface is a circumferential side wall of the pressing roller. The pressing roller assembly 1 comprises an upper pressing roller 11 and a lower pressing roller 12 tightly attached to the upper pressing roller 11, and the pressing surface is a circumferential side wall of the upper pressing roller 11.
Further, the upper press roll 11 and the lower press roll 12 are both composed of a central mandrel and a rubber layer coated on the cylindrical periphery of the central mandrel. And a PFA film is arranged on the peripheral surface of the rubber layer and used for preventing the heated carbon powder from being adhered to the rubber layer.
In other embodiments, either the upper press roll 11 or the lower press roll 12 may be a metal or injection molded press roll.
The embodiment further comprises a driving device, wherein the driving device drives the upper pressing roller 11 or the lower pressing roller 12 to rotate so as to drive the medium to be transmitted between the upper pressing roller 11 and the lower pressing roller 12.
Wherein the driving device can be a motor gear driving device or a motor belt driving device which is commonly used in the prior art.
This embodiment still includes temperature sensor and controller, temperature sensor is used for detecting the heating temperature of illumination heating element 2 and will the heating temperature feeds back to the controller, the controller is used for controlling the luminous intensity of light source 21 is in order to adjust heating temperature. Further, the temperature sensor is a thermistor.
Example 2
This embodiment provides a printer including the fixing device described in embodiment 1 above, and having all the technical advantages of the fixing device, which will not be described herein again.
In the printer described in this embodiment, after the printing medium passes through the photosensitive drum and the transfer roller, the carbon powder is adsorbed on the printing medium through electrostatic action, enters into the fixing device action range, the fixing device in this embodiment directly heats the carbon powder attached on the medium through illumination, the heat dissipation capacity to the outside of the whole fixing device is reduced, and then the requirement of the whole printer on the heat dissipation device is reduced, the printer in this embodiment is compared with the heat preservation design and the corresponding heat dissipation design that the fixing device is not required to be designed in the existing printer, and the cost of the whole machine is significantly reduced.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (11)
1. A fixing device, characterized by comprising:
the pressure applying assembly fixes the melted carbon powder on the medium printing surface by applying pressure to the medium attached with the carbon powder;
and the illumination heating unit (2) is arranged outside the pressure applying assembly and is used for heating and melting the carbon powder attached to the medium printing surface by projecting light rays onto the medium printing surface and/or is used for heating the pressure applying surface by projecting light rays onto the pressure applying surface of the pressure applying assembly to melt the carbon powder on the medium printing surface.
2. A fixing device according to claim 1, wherein said light heating unit (2) includes a light source (21) and a light condensing device (22) provided over said light source (21), said light condensing device (22) being configured to condense and project light generated by said light source (21) onto said medium printing surface.
3. A fixing device according to claim 2, wherein said light condensing means (22) condenses light generated by said light source (21) into a parallel beam to be projected on said medium printing surface.
4. A fixing device according to claim 3, wherein said light condensing device (22) comprises:
a semi-enclosed reflective cavity (222) having an opening disposed toward the media print side, the reflective cavity (222) to reflect light emitted by the light source (21) to the opening of the reflective cavity (222);
and a lens (223) disposed at an opening of the reflective cavity (222) for sealing the reflective cavity and focusing the light emitted from the light source (21).
5. A fixing device according to claim 4, wherein said reflection chamber (222) is formed by connecting a plurality of mirrors (221).
6. The fixing device according to any one of claims 2 to 5, wherein the light source (21) is any one of a halogen lamp, an LED lamp, an infrared light source, or a laser emitter.
7. A fixing device according to any one of claims 1 to 5, wherein said pressing member is a pressure roller member (1) having at least a pressure roller, and said pressing surface is a circumferential side wall of said pressure roller.
8. A fixing device according to claim 7, wherein said pressure roller assembly (1) includes an upper pressure roller (11) and a lower pressure roller (12) disposed in close proximity to said upper pressure roller (11), said pressure applying surface being a circumferential side wall of said upper pressure roller (11).
9. A fixing device according to claim 8, further comprising a driving means for rotating said upper pressure roller (11) or said lower pressure roller (12) to drive said medium to be transmitted between said upper pressure roller (11) and said lower pressure roller (12).
10. A fixing device according to any one of claims 1 to 9, further comprising a temperature sensor for detecting a heating temperature of said light irradiation heating unit (2) and feeding back said heating temperature to said controller, and a controller for controlling a light emission intensity of said light source (21) to adjust said heating temperature.
11. A printer characterized by comprising the fixing device according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811235625.0A CN111077755A (en) | 2018-10-22 | 2018-10-22 | Fixing device and printer thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811235625.0A CN111077755A (en) | 2018-10-22 | 2018-10-22 | Fixing device and printer thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111077755A true CN111077755A (en) | 2020-04-28 |
Family
ID=70310138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811235625.0A Pending CN111077755A (en) | 2018-10-22 | 2018-10-22 | Fixing device and printer thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111077755A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5459561A (en) * | 1993-10-06 | 1995-10-17 | Hewlett-Packard Company | Method and apparatus for fusing toner into a print medium |
| CN1920698A (en) * | 2005-08-25 | 2007-02-28 | 优志旺电机株式会社 | Heating device for fixing |
| CN101551628A (en) * | 2008-04-01 | 2009-10-07 | 株式会社理光 | Image forming apparatus |
| CN101995796A (en) * | 2009-08-20 | 2011-03-30 | 富士施乐株式会社 | Laser fixing apparatus and image forming apparatus |
| CN104007643A (en) * | 2013-02-22 | 2014-08-27 | 富士施乐株式会社 | Fixing device |
-
2018
- 2018-10-22 CN CN201811235625.0A patent/CN111077755A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5459561A (en) * | 1993-10-06 | 1995-10-17 | Hewlett-Packard Company | Method and apparatus for fusing toner into a print medium |
| CN1920698A (en) * | 2005-08-25 | 2007-02-28 | 优志旺电机株式会社 | Heating device for fixing |
| CN101551628A (en) * | 2008-04-01 | 2009-10-07 | 株式会社理光 | Image forming apparatus |
| CN101995796A (en) * | 2009-08-20 | 2011-03-30 | 富士施乐株式会社 | Laser fixing apparatus and image forming apparatus |
| CN104007643A (en) * | 2013-02-22 | 2014-08-27 | 富士施乐株式会社 | Fixing device |
Non-Patent Citations (1)
| Title |
|---|
| 林华海等编: "《静电复印机（原理、结构、使用和维护）》", 31 July 1987 * |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 300450 room 310, No.1 Second Street, airport international logistics zone, pilot free trade zone (Airport Economic Zone), Dongli District, Tianjin Applicant after: Zhixiang Technology Co.,Ltd. Address before: 300450 room 310, No.1 Second Street, airport international logistics zone, pilot free trade zone (Airport Economic Zone), Dongli District, Tianjin Applicant before: LENOVO IMAGE (TIANJIN) TECHNOLOGY Co.,Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200428 |