CN100529992C - Photo fixation device, image forming device and heating control method of fixation device - Google Patents
Photo fixation device, image forming device and heating control method of fixation device Download PDFInfo
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- CN100529992C CN100529992C CNB2005100897465A CN200510089746A CN100529992C CN 100529992 C CN100529992 C CN 100529992C CN B2005100897465 A CNB2005100897465 A CN B2005100897465A CN 200510089746 A CN200510089746 A CN 200510089746A CN 100529992 C CN100529992 C CN 100529992C
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- heating source
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Abstract
The present invention provides a fixing device for an image forming apparatus, an image forming apparatus using the fixing device and a method for controlling heater of the fixing device. At the time of standby, a first heating heater is turned on after a pressure heater is turned on, a second heating heater is turned on when the first heating heater is turned off and the first and the second heating heaters are prohibited to simultaneously turn on. On the other hand, at the time of paper feeding, the first and the second heating heaters are turned on when the pressure heater is off, the pressure heater is turned on when both of the first and the second heating heaters are turned off and the second (or first) heating heater is turned on after the pressure heater is turned off. Anyway, control is performed so that the first and the second heating heaters are not simultaneously turned on. The invention can avoid a plurality of heating sources simultaneously becoming ON states, suppress the maximum power consumption and satisfy flicker regulation by simple control.
Description
Technical field
The present invention relates to a kind of fixing device, use the image processing system of this fixing device, and the method for heating and controlling of the heater of fixing device.
Background technology
In the fixing device of image processing system,, but must shorten time of the fixing temperature when reaching fixing device heats for the adjusting machine time that shortens equipment promptly arrives the time of starting working.For this reason, need the feasible well heater thermal capacity high capacity that is used to heat the 1st heating source (warm-up mill well heater) of the 1st solid of revolution (warm-up mill) and is used to heat the 2nd heating source (backer roll well heater) of the 2nd solid of revolution (backer roll).But, merely make well heater thermal capacity high capacity can cause maximum consumption electric power to increase, and be difficult to meet the flicker specification.
Here so-called " flicker specification " is meant the specification that the caused flicker of shiner that brightness or spectral distribution are changed is formulated, in well heater, and general inrush current and the value calculated of occurrence frequency when lighting according to well heater.
Therefore, fixing heater is formed the well heater of plurality of small-capacity by plural numberization, has some luminous intensity distributions and distributes.
As this fixing device that is provided with some well heaters, can open 2003-156966 number with reference to the spy, Jap.P. waits communique No. 3186906.
But, identical when whole well heaters are connected occasion simultaneously in the above-mentioned fixing device that is provided with some well heaters with the high capacity of well heater thermal capacity, can cause maximum consumption electric power to increase, and be difficult to meet the flicker specification.
Summary of the invention
The present invention puts forward for solving the existing problem of above-mentioned prior art, the objective of the invention is to, and some heating sources can not become on-state simultaneously in the feasible simple control, and suppressing maximum consumption electric power increases, satisfied flicker specification.
For achieving the above object, the present invention proposes following scheme:
(1) a kind of fixing device makes recording medium pass through between a pair of solid of revolution, and on recording medium, described a pair of solid of revolution is the 1st solid of revolution and the 2nd solid of revolution, it is characterized in that with image fixing:
This fixing device comprises:
The 1st heating source is used to heat described the 1st solid of revolution;
The 1st temperature-detecting device is used to detect the surface temperature of described the 1st solid of revolution;
The 2nd heating source is used to heat described the 2nd solid of revolution;
The 2nd temperature-detecting device is used to detect the surface temperature of described the 2nd solid of revolution;
Control device according to described the 1st temperature-detecting device and the detected temperature of the 2nd temperature-detecting device, is controlled the heat that adds that adds heat and the 2nd heating source of described the 1st heating source respectively;
Wherein, described control device is following to be controlled: when the photographic fixing standby, forbid that two thermals source that constitute described the 1st heating source connect simultaneously; When leading to paper, connect described the 2nd heating source in the moment that two thermals source that constitute described the 1st heating source all disconnect.
(2) in the fixing device of described (1), it is characterized in that:
Described the 1st heating source is made of 2 or 2 above thermals source;
When the photographic fixing standby, the on/off of described each thermal source of described control device control makes that the on-state of described each thermal source is not overlapping.
(3) a kind of fixing device makes recording medium pass through between a pair of the 1st solid of revolution and the 2nd solid of revolution image fixing on recording medium, to be is characterized in that:
This fixing device comprises:
The 1st heating source is used to heat described the 1st solid of revolution;
The 1st temperature-detecting device is used to detect the surface temperature of described the 1st solid of revolution;
The 2nd heating source is used to heat described the 2nd solid of revolution;
The 2nd temperature-detecting device is used to detect the surface temperature of described the 2nd solid of revolution;
Control device according to described the 1st temperature-detecting device and the detected temperature of the 2nd temperature-detecting device, is controlled the heat that adds that adds heat and the 2nd heating source of described the 1st heating source respectively;
Wherein, when logical paper, described control device carries out on, makes that the on-state of the on-state of the 1st heating source and the 2nd heating source is not overlapping.
(4) in the fixing device of described (3), it is characterized in that:
Described the 1st heating source is made of 2 or 2 above thermals source;
When leading to paper, the on/off of described each thermal source of described control device control allows the on-state of described each thermal source overlapping.
In the fixing device of described (2) or (4), it is characterized in that (5) at least one of described each thermal source is the central portion well heater, and central portion is had light distribution characteristic, another is an end heater at least, and the end is had light distribution characteristic.
In the fixing device of any, it is characterized in that in described (1)-(5) that (6) described the 1st heating source is located in the 1st solid of revolution, the photographic fixing tape wrapping is on the 1st solid of revolution.
In the fixing device of any, it is characterized in that in described (1)-(6) that (7) described the 1st solid of revolution heats the image forming surface side that becomes the photographic fixing object of described recording medium.
(8) in described (1)-(7), in the fixing device of any, it is characterized in that:
The non-image formation face side of described the 2nd solid of revolution and described recording medium or do not become the image forming surface side contacts of photographic fixing object;
Described the 2nd heating source heats the non-image formation face side of described recording medium or does not become the image forming surface side of photographic fixing object.
In the fixing device of any, it is characterized in that in described (1)-(8) that (9) thermal capacity of setting described the 1st solid of revolution and the 2nd solid of revolution is following relation:
The 1st solid of revolution thermal capacity＜the 2nd solid of revolution thermal capacity
(10) a kind of image processing system is characterized in that, is provided with the fixing device of any record in aforesaid right requirement (1)-(9).
(11) a kind of method for heating and controlling of fixing device makes recording medium pass through between a pair of the 1st solid of revolution and the 2nd solid of revolution image fixing on recording medium, to be is characterized in that:
When judgement still is standby when leading to paper;
Logical paper occasion when the 1st heating source that is used to heat described the 1st solid of revolution is in off-state, makes the 2nd heating source that is used to heat described the 2nd solid of revolution be in on-state.
(12) a kind of method for heating and controlling of fixing device makes recording medium pass through between a pair of the 1st solid of revolution and the 2nd solid of revolution image fixing on recording medium, to be is characterized in that:
When judgement still is standby when leading to paper;
The standby occasion when the 2nd heating source that is used to heat described the 2nd solid of revolution is in on-state, makes described the 1st heating source be in the state of being switched on or switched off.
According to the present invention, control some heating sources, do not become on-state simultaneously, can suppress maximum consumption electric power, satisfy rules.
Description of drawings
Fig. 1 be the embodiment of the invention relate to form the summary pie graph of the color printer of device as coloured image.
Fig. 2 represents the detailed structure of fixing device shown in Figure 1.
Fig. 3 be in the control circuit of the color printer that relates to of the embodiment of the invention with the block scheme of fixing device relative section.
Fig. 4 is the control program process flow diagram that the embodiment of the invention is carried out.
Fig. 5 A and 5B are the time diagrams of control time one example of embodiment of the invention implementation.
Embodiment
Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 be the embodiment of the invention relate to form the summary pie graph of the color printer of device as coloured image.In Fig. 1, color printer is basically by imaging portion 100, sheet feed section 200, and photographic fixing portion 300, row's paper portion 400 constitutes.
In the color printer of this formation, be transported to the vertical path 10 5 that transports from the transfer paper of the 1st paper feeding cassette 210 or the 2nd paper feeding cassette 220 or 230 supplies of manual sheet feed stacker, on this transfer paper, transfer printing has the transfer paper of uncertain image to be sent to fixing device 300 to the superimposed color toner on transfer belt 102 surfaces that will form in imaging portion 100 by transfer roll 104 as transfer printing.
In fixing device 300, fixing roller 310 and warm-up mill 320 are setting up photographic fixing band 330 from the inboard, by thermal source heat fixer band 330 surfaces such as well heaters, photographic fixing band and backer roll 340 form clamping part, transfer printing has the transfer paper of uncertain image by described photographic fixing clamping part, on this transfer paper surface, transfer paper is discharged on the paper platform 420 color toner as photographic fixing.
Fig. 2 represents the detailed structure of fixing device 300 shown in Figure 1.330 framves of photographic fixing band also are provided with band and open frame parts (jockey pulley) 331 on fixing roller 310 and warm-up mill 320, by pressue device or the elasticity for example spring (not diagram) of device of energizing, to being with 330 pressurizations, make it keep suitable tension force.Fixing roller 310 is positioned at photographic fixing band 330 private sides, forms with elastic body, applies suitable pressure between fixing roller 310 and backer roll 320, like this, forms the photographic fixing clamping part between photographic fixing band 330 and backer roll 340.
Be provided with the 1st well heater 321 and the 2nd well heater 322 in warm-up mill 320 inside, heat described warm-up mill 320 internally by described the 1st well heater 321, the 2 well heaters 322, and then heat fixer band 330.In the present embodiment, two well heaters are set, still, not limited to by this, also a plurality of well heaters can be set.
Peripheral part at warm-up mill 320 is provided with temperature detection sensor 350, detect the surface temperature of photographic fixing band 330 by contact or noncontact mode, surface temperature according to detected photographic fixing band 330, control the energising of the 1st well heater 321, with the surface temperature control of photographic fixing band 330 in suitable temperature range.
The inside of backer roll 340 be provided with heater (following for the difference for the purpose of, be called " backer roll well heater ") 341.Peripheral part at backer roll 340 is provided with temperature detection sensor 351, detect the surface temperature of backer roll 340 by this sensor 351, surface temperature according to detected backer roll 340, the energising of control backer roll well heater 341, with the surface temperature control of backer roll 340 in suitable temperature range.
Peripheral part at backer roll 340 is provided with cleaning member 360, and removing is dirty dirty attached to backer roll 340 surfaces.
In the present embodiment, photographic fixing side solid of revolution (photographic fixing band 330) side is the image surface side of transfer paper P, pressure side solid of revolution (backer roll 340) side is non-image surface side, when be formed on uncertain image 610 on the transfer paper 212 by heated photographic fixing clamping part during, photographic fixing is on transfer paper 212, that is, toner adheres to photographic fixing on transfer paper 212 surfaces as 620.
Fig. 3 is the formation block scheme of the control circuit of the image processing system that relates to of the embodiment of the invention, and only expression relates to the fixing device part.Control circuit 700 comprises control part (CPU) 701, and this control part 701 is provided with ROM, RAM (not diagram).Control circuit 700 also comprises the 1st temperature detection sensor 350 that is used to detect photographic fixing band 330 surface temperatures, be used to detect the 2nd temperature detection sensor 351 of backer roll 340 surface temperatures, the 1st well heater 321, the 2nd well heater 322, backer roll well heater 341 is used to drive fixing roller 310 and backer roll 340 rotating CD-ROM drive motor 365.Described the 1st temperature detection sensor 350, the 2 temperature detection sensors 351, the 1 well heaters 321, the 2 well heaters 322, backer roll well heater 341, CD-ROM drive motor 365 is connected with described control part 701 respectively.Control part 701 uses RAM as the workspace, the processing that the implementation program sets according to the program that is stored among the ROM.
Fig. 4 is the control program process flow diagram of carrying out by described control part 701, in the control program of Fig. 4, at step S1, whether judgement obtains transfer paper at fixing device 300, promptly whether be in logical paper state, if during logical paper ("Yes" of step S1), then enter step S2, judge whether to require to connect the backer roll well heater, so that heating and pressurizing roller 340.If do not require to connect backer roll well heater ("No" of step S2), then get back to step S1, if require to connect backer roll well heater ("Yes" of step S2), then enter step S3, judge whether to require to connect the 1st well heater 321 and the 2nd well heater 322, if require to connect the 1st well heater 321 and the 2nd well heater 322 ("Yes" of step S3), then get back to step S2, if do not require to connect the 1st well heater 321 and the 2nd well heater 322 ("No" of step S3), then enter step S4, forbid connecting the 1st well heater 321 and the 2nd well heater 322.Then, at step S5, connect backer roll well heater 341, then, at step S6, judge whether the backer roll well heater disconnects, if according to the temperature detection of the 2nd temperature detection sensor 351, the "on" position of the backer roll well heater of controlling 341 is in off-state ("Yes" of step S6), then enters step S7, releasing forbids connecting the 1st well heater 321 and the 2nd well heater 322, gets back to step S1.
If be judged as ("No" of step S1) when not being that logical paper state is standby at step S1, then enter step S8, judge whether to carry out the waste heat photographic fixing.If do not carry out waste heat photographic fixing ("No" of step S8), then end process.If carry out waste heat photographic fixing ("Yes" of step S8), then enter step S9, judge whether to require to connect backer roll well heater 341.If require to connect backer roll well heater 341 ("Yes" of step S9), then enter step S10, forbid connecting simultaneously the 1st well heater 321, the 2 well heaters 322, then,, connect backer roll well heater 341 at step S11.Then, at step S12, judge whether the backer roll well heater disconnects, if according to described temperature detection control, ("Yes" of step S12) then entered step S13 when backer roll well heater 341 became off-state, remove the illegal state of described step S10, promptly remove and forbid connecting simultaneously the 1st well heater 321, the 2 well heaters 322, get back to step S1.
If in step S9, judge not require to connect backer roll well heater ("No" of step S9), then get back to step S1.
By above-mentioned such control, can not become the 1st well heater 321, the 2 well heaters 322, backer roll well heater 341 threes are on-state simultaneously, can realize the desired heat control that adds.
At this moment control time figure is illustrated among Fig. 5, and Fig. 5 is control time one example that the embodiment of the invention is carried out.Wherein, Fig. 5 A is illustrated in the 1st well heater 321, the 2 well heaters 322 that step S1 is judged as (during standby) when not being to lead to paper, the on/off time diagram of backer roll well heater 341.After backer roll well heater 341 was connected, the 1st well heater 321 became connection, and when the 1st well heater 321 disconnected, the 2nd well heater 322 became connection.This is the cause of forbidding connecting simultaneously the 1st well heater 321, the 2 well heaters 322 owing at step S10.In the present embodiment, dispose each well heater, make the 1st well heater 321 heat the central portion of described warm-up mill 320, the end of the described warm-up mill 320 of the 2nd well heater 322 heating.In this time diagram, certain all is in on-state sometimes in backer roll well heater 341 and the 1st well heater 321, the 2 well heaters 322, but the 1st well heater 321 and the 2nd well heater 322 are not in on-state simultaneously.
The 1st well heater 321, the 2 well heaters 322 when Fig. 5 B represents to lead to paper, the on/off time diagram of backer roll well heater 341.In the "No" occasion of step S2, when backer roll well heater 341 disconnected, the 1st well heater 321 and the 2nd well heater 322 were connected.In step S4 occasion, when the 1st well heater 321 and the 2nd well heater 322 disconnect simultaneously,, connect backer roll well heater 341 at step S5, at step S6, be judged as after backer roll well heater 341 disconnects, at step S7, the 2nd well heater 322 is connected.In this time diagram, the 1st well heater 321 and the 2nd well heater 322 all are in on-state sometimes, but backer roll well heater 341 and the 1st well heater 321 or the 2nd well heater 322 are not in on-state simultaneously.
In the above-described embodiments,, this image is carried out photographic fixing, but the present invention is not limited thereto, also be applicable to each single face is formed image respectively, finally in two-sided formation image occasion at the single face formation image of transfer paper.This occasion, the image forming surface of non-photographic fixing side contacts with backer roll 340.
According to the foregoing description, can obtain following effect.
When device standby, irrelevant with the on/off of the 1st well heater 321, the 2 well heaters 322, the on/off of control backer roll well heater 341, therefore, can make the control of backer roll well heater 341 become and disobey the simple control that is stored in the 1st well heater 321 or the 2nd well heater 322 states.
When equipment leads to paper, the on/off of control backer roll well heater 341, feasible not superimposed with the connection of the 1st well heater 321, the 2 well heaters 322, therefore, can reduce maximum consumption electric power, can satisfy the flicker specification.
The 1st well heater 321, the 2 well heaters 322 are set at least, during standby, control above-mentioned the 1st well heater 321 and the 2nd well heater 322, it is not superimposed to make them connect, and can reduce maximum consumption electric power, can satisfy the flicker specification.
The 1st well heater 321, the 2 well heaters 322 are set at least, when leading to paper, can control above-mentioned the 1st well heater 321 and the 2nd well heater 322 yet, it is not superimposed to make their connect mutually, can reduce maximum consumption electric power, can satisfy the flicker specification.Control backer roll well heater 341 on the one hand, it is become and the irrelevant simple control of the 1st well heater 321, the 2 well heaters 322 states.
With at least one is configured in central portion in some well heaters 321,322, with at least one is configured in the end in some well heaters 321,322, carry out plural numberization by function, therefore, can reduce maximum consumption electric power, can satisfy the flicker specification.
The 1st well heater 321, the 2 well heaters 322 are arranged in the warm-up mill 320, and photographic fixing band 330 is wound on this warm-up mill 320, and therefore, the 1st well heater 321, the 2 well heaters 322 are simple in structure, and can improve the thermal efficiency.
Backer roll well heater 341 heating and pressurizing rollers 340, therefore the image dorsal part of heating transfer paper 212, can carry out hot photographic fixing effectively.
Warm-up mill 320, photographic fixing band 330, fixing roller 310 constitutes the heated side parts, makes that the ratio of heat capacities pressure side parts thermal capacity of these heated side parts is little, therefore, there is no need to make backer roll well heater 341 plural numberizations.
In the above-described embodiments, the 1st solid of revolution is corresponding to fixing roller, warm-up mill and photographic fixing band, and the 1st heating source is corresponding to well heater 321,322, the 1st temperature-detecting device corresponding to the 1st temperature detection sensor 350, the 2 solid of revolution corresponding to backer roll 340, the 2 heating sources corresponding to backer roll well heater 341, the 2nd temperature-detecting device is corresponding to the 2nd temperature detection sensor 351, control device is corresponding to control part 701, and thermal source is corresponding to the 1st well heater 321, the 2 well heaters 322.
Above with reference to description of drawings embodiments of the invention, but the present invention is not limited to the foregoing description.Can do all changes in the technology of the present invention thought range, they all belong to protection scope of the present invention.
Claims (1)
1. a fixing device makes recording medium pass through between a pair of solid of revolution, and on recording medium, described a pair of solid of revolution is the 1st solid of revolution and the 2nd solid of revolution, it is characterized in that with image fixing:
This fixing device comprises:
The 1st heating source is used to heat described the 1st solid of revolution, comprises two thermals source: the 1st well heater and the 2nd well heater;
The 1st temperature-detecting device is used to detect the surface temperature of described the 1st solid of revolution;
The 2nd heating source is used to heat described the 2nd solid of revolution;
The 2nd temperature-detecting device is used to detect the surface temperature of described the 2nd solid of revolution;
Control device according to described the 1st temperature-detecting device and the detected temperature of the 2nd temperature-detecting device, is controlled the heat that adds that adds heat and the 2nd heating source of described the 1st heating source respectively;
Wherein, described control device is following to be controlled: when the photographic fixing standby, forbid that the 1st well heater and the 2nd well heater that constitute described the 1st heating source connect simultaneously, thereby connect the 2nd heating source, the 1st well heater successively, when the 1st well heater disconnects, connect the 2nd well heater; When logical paper, connect the 1st well heater, the 2nd well heater successively, when disconnecting simultaneously, the 1st well heater that constitutes described the 1st heating source and the 2nd well heater connect described the 2nd heating source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP233367/04 | 2004-08-10 | ||
| JP2004233367 | 2004-08-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1737698A CN1737698A (en) | 2006-02-22 |
| CN100529992C true CN100529992C (en) | 2009-08-19 |
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ID=36080517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100897465A Expired - Fee Related CN100529992C (en) | 2004-08-10 | 2005-08-05 | Photo fixation device, image forming device and heating control method of fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100529992C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008096912A (en) * | 2006-10-16 | 2008-04-24 | Kyocera Mita Corp | Image forming apparatus |
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2005
- 2005-08-05 CN CNB2005100897465A patent/CN100529992C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1737698A (en) | 2006-02-22 |
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