CN106556997B - Detection method, equipment and the circuit and printing equipment of fixing heating failure in printing equipment - Google Patents
Detection method, equipment and the circuit and printing equipment of fixing heating failure in printing equipment Download PDFInfo
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- CN106556997B CN106556997B CN201510640842.8A CN201510640842A CN106556997B CN 106556997 B CN106556997 B CN 106556997B CN 201510640842 A CN201510640842 A CN 201510640842A CN 106556997 B CN106556997 B CN 106556997B
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- fixing
- heating element
- voltage
- temperature
- detection
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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
- G03G15/2039—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
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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
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
- G03G15/5045—Detecting the temperature
Abstract
The invention discloses the detection method of fixing heating failure and its equipment and circuits in a kind of printing equipment.Detection method includes the following steps: if it is judged that the fixing heating element of printing equipment is not warming up to fixing temperature within the first predetermined time and supply voltage is less than first voltage threshold value, then detecting the temperature of fixing heating element and judges whether the fixing heating element is warming up to fixing temperature within second scheduled time；If it is judged that fixing heating element is warming up to fixing temperature within second scheduled time, then Fisrt fault signal is exported；And if it is judged that fixing heating element be not warming up to fixing temperature within second scheduled time, then export the second fault-signal.The present invention can determine whether out that the concrete reason for being heated to fixing temperature time-out is that supply voltage is too low or working sensor is bad or fixing heating element goes wrong, and provides the user with correct fault cues information, avoids unnecessary maintenance work.The invention also discloses a kind of printing equipments.
Description
Technical field
The present invention relates to printing technique fields, more particularly, to a kind of detection of fixing heating failure in printing equipment
Method and its equipment and circuit.The invention further relates to the printing equipments of the detection device or circuit that contain fixing heating failure.
Background technique
Currently, in the printing equipments such as duplicator, printer and compounding machine, previously according to normal supply voltage model
It encloses, sets the required maximum time threshold value for being heated to fixing temperature, and when detection circuit detects to heat time-out, machine
It can stop then reporting an error to the heating of fixing heating element.It reports an error at this time and is shown as printing equipment and mortality mistake occur, need
After-sales service personnel repair.However, fixing heating time-out is worked not by machine sensor or fixing heating element
Caused by the mortality mistake such as good, machine power voltage reduction, which will also result in, is fixed heating time-out, but existing printing equipment
The concrete reason that can not detect fixing heating time-out, as the problem that this power supply lowly causes heating overtime, since printing fills
Setting itself, there is no problem, asks after-sale service personnel to will cause the wasting of resources to repair, brings inconvenience to user.
Summary of the invention
To solve the above-mentioned problems, the invention discloses in a kind of printing equipment fixing heating failure detection method and its
Equipment and circuit.It can effectively judge the concrete reason for being heated to fixing temperature time-out, provide the user with correct failure and mention
Show information.
In order to solve the above technical problems, embodiments of the present invention disclose fixing heating failure in a kind of printing equipment
Detection method, comprising the following steps:
First detection judgment step, the temperature of the fixing heating element of detection device and judge fixing heating element whether
Fixing temperature is warming up in first predetermined time；
Second detection judgment step, the supply voltage of detection device simultaneously judge whether supply voltage is less than first voltage threshold
Value；
Third detects judgment step, if it is judged that fixing heating element is not warming up to fixing temperature within the first predetermined time
It spends and supply voltage is less than first voltage threshold value, then further detection is fixed the temperature of heating element and judges the fixing heating part
Whether part is warming up to fixing temperature within second scheduled time, wherein determined by voltage-heating-up time corresponding relationship with it is described
First voltage threshold value corresponding time, the voltage-heating-up time corresponding relationship characterization supply voltage value and fixing heating element
The corresponding relationship being heated between fixing temperature required time；
First signal exports step, if it is judged that fixing heating element is warming up to fixing temperature within second scheduled time
Degree then exports the Fisrt fault signal for indicating that supply voltage is too low；And if it is judged that fixing heating element is not pre- second
Fixing temperature is warming up in fixing time, then exporting indicates that the component of the temperature of detection fixing heating element breaks down and/or fixed
The second fault-signal that shadow heating element breaks down；
Wherein, the first predetermined time is less than the second predetermined time.
This method can determine whether out that the concrete reason for being heated to fixing temperature time-out is electricity by detecting to supply voltage
Source brownout or working sensor it is bad or fixing heating element go wrong, mentioned to provide the user with correct failure
Show information, avoids unnecessary maintenance work, economize on resources.
In a preferred example, above-mentioned detection method is further comprising the steps of after above-mentioned second detection judgment step:
Voltage judgment step then judges whether supply voltage is small if it is judged that supply voltage is greater than first voltage threshold value
In second voltage threshold value；
4th detection judgment step, if it is judged that supply voltage is less than second voltage threshold value and fixing heating element does not exist
It is warming up to fixing temperature in first predetermined time, then detect the temperature of fixing heating element and whether judges the fixing heating element
Fixing temperature is warming up within the third predetermined time, wherein the third predetermined time is according to the voltage-heating-up time corresponding pass
It is preset supply voltage value and fixing heating element is heated to corresponding relationship between the time required to fixing temperature, is obtained
The time corresponding with current power voltage value taken；
Print processing step, if it is judged that fixing heating element is warming up to fixing temperature within the third predetermined time, then
Reduce the manuscript paper print speed of device；
Wherein, the third predetermined time less than the second predetermined time and was greater than for the first predetermined time, and second voltage threshold value is greater than
First voltage threshold value.
It is lower in supply voltage but in the case that printing equipment may continue to work, if it is determined that fixing heating element goes out not
The reason of fixing temperature capable of being warming up within the first predetermined time is can then to reduce printing equipment printing speed caused by voltage is lower
Degree, continues the working condition of holding meanss, increases operation rate.
In another preferred example, after above-mentioned 4th detection judgment step, above-mentioned detection method is further comprising the steps of:
Second signal exports step, if it is judged that fixing heating element is not warming up to fixing temperature within the third predetermined time
Degree, then export the second fault-signal.
In another preferred example, above-mentioned detection method is further comprising the steps of after above-mentioned voltage judgment step:
Third signal exports step, if it is judged that being greater than second voltage threshold value and fixing heating element for supply voltage
Fixing temperature is not warming up within the first predetermined time, then exports the second fault-signal.
In another preferred example, above-mentioned third detection judgment step includes following sub-step:
Heating extends sub-step, if to the heating for being fixed heating element because stopping more than the first predetermined time,
Extend the heating time of fixing heating element；
Heating detection judges sub-step, and the temperature of heating element is fixed after detection extension heating time and judges fixing heating
Whether component is warming up to fixing temperature within second scheduled time.
Embodiments of the present invention also disclose a kind of detection device of fixing heating failure in printing equipment, comprising:
First detection judging unit is configured as the temperature of the fixing heating element of detection device and judges to be fixed heating part
Whether part within the first predetermined time is warming up to fixing temperature；
Whether the second detection judging unit, be configured as the supply voltage of detection device and judge supply voltage less than first
Voltage threshold；
Third detects judging unit, is for the judging result in the second detection judging unit and the first detection judgement is single
When the judging result of member is no, further whether detection is fixed the temperature of heating element and judges the fixing heating element second
Fixing temperature is warming up in predetermined time, wherein the second predetermined time was according to preset voltage-heating-up time corresponding pass
Time corresponding with first voltage threshold value determined by being, the voltage-heating-up time corresponding relationship characterization supply voltage value and
Fixing heating element is heated to the corresponding relationship between fixing temperature required time；
First signal output unit, for when the judging result of third detection judging unit is to be, output to indicate power supply
The Fisrt fault signal of brownout, and, when the judging result of third detection judging unit is no, output indicates that detection is fixed
The second fault-signal that the component of the temperature of shadow heating element breaks down and/or fixing heating element breaks down；
Wherein, the first predetermined time is less than the second predetermined time.
In another preferred example, above-mentioned apparatus further includes with lower unit:
Voltage judging unit, for judging whether supply voltage is small when the judging result of the second detection judging unit is no
In second voltage threshold value；
4th detection judging unit, for the judging result of voltage judging unit be and first detection judging unit
When judging result is no, whether the temperature of detection fixing heating element simultaneously judges the fixing heating element within the third predetermined time
It is warming up to fixing temperature, wherein the third predetermined time is according to determined by the voltage-heating-up time corresponding relationship and current
The supply voltage value corresponding time；
Print process unit, for when the judging result of the 4th detection judging unit is to be, the manuscript paper for reducing device to be beaten
Print-out rate；
Wherein, the third predetermined time less than the second predetermined time and was greater than for the first predetermined time.
In another preferred example, above-mentioned apparatus further includes with lower unit:
Second signal output unit, for the judging result of voltage judging unit be and the 4th detection judging unit
When judging result is no, the second fault-signal is exported.
In another preferred example, above-mentioned apparatus further includes with lower unit:
Third signal output unit is all no for the judging result in voltage judging unit and the 4th detection judging unit
When, export the second fault-signal.
In another preferred example, above-mentioned third detection judging unit includes following subelement:
Heating extends subelement, in the heating to fixing heating element because stopping more than the first predetermined time
When, extend the heating time of fixing heating element；
Heating detection judgment sub-unit, for being fixed the temperature of heating element after detecting extension heating time and judging to be fixed
Whether heating element is warming up to fixing temperature within second scheduled time.
Embodiments of the present invention also disclose a kind of detection circuit of fixing heating failure in printing equipment, comprising: rise
Warm detector is configured as the temperature of the fixing heating element of detection device, the temperature signal of output characterization temperature；
Detection circuit further include:
Whether voltage detecting determining device, is configured as the supply voltage of detection device, and judge supply voltage less than first
Voltage threshold, output indicate the first level signal of judging result；
Controller is connect with heating detector and voltage detector, is configured to receive temperature signal and voltage
First level signal of detector output,
Controller judges to be fixed whether heating element within the first predetermined time is warming up to fixing temperature according to temperature signal,
It is that fixing heating element is not warming up to fixing temperature within the first predetermined time and the first level is believed in judging result
Number indicate that judging result is when being, which judges the fixing heating element whether the according to the temperature of fixing heating element
Fixing temperature is warming up in two predetermined times, wherein the second predetermined time was corresponding according to preset voltage-heating-up time
Time corresponding with the first voltage threshold value determined by relationship, voltage-heating-up time corresponding relationship characterize supply voltage value
It is heated to the corresponding relationship between fixing temperature required time with fixing heating element,
It is that fixing heating element exports Fisrt fault when being warming up to fixing temperature within second scheduled time in judging result
Signal is that fixing heating element exports the second failure letter when not being warming up to fixing temperature within second scheduled time in judging result
Number.
By increasing voltage detecting determining device and control on the basis of the circuit of the heating detector having in existing printer
Device processed, can effectively judge the concrete reason for being heated to fixing temperature time-out be that supply voltage is too low or working sensor not
Good or fixing heating element goes wrong, to provide the user with correct fault cues information, avoids unnecessary maintenance mans
Make, economizes on resources.
In another preferred example, above-mentioned voltage detecting determining device includes: first resistor, second resistance and determining device；
First resistor is connected with second resistance, and one end of first resistor connects the power supply of the printing equipment；
Second resistance is in parallel with determining device；
Determining device is connect with controller, is configured as judging the voltage swing at second resistance both ends, and judging result is made
Controller is sent to for the first level signal.
In another preferred example, above-mentioned voltage detecting determining device is additionally configured to judge whether supply voltage is greater than the first electricity
It presses threshold value and is less than second voltage threshold value, and export the second electrical level signal for indicating judging result；
Controller is additionally configured to receive second electrical level signal and temperature signal respectively,
It is that fixing heating element is not warming up to fixing temperature within the first predetermined time and second electrical level is believed in judging result
Number judging result indicated is when being, the controller according to the temperature of fixing heating element judge the fixing heating element whether
Third is warming up to fixing temperature in the predetermined time, wherein the third predetermined time is true according to voltage-heating-up time corresponding relationship institute
The fixed time corresponding with current power voltage value；
It is that control device reduces when fixing heating element is warming up to fixing temperature within the third predetermined time in judging result
Print speed is the second event of output when fixing heating element is not warming up to fixing temperature within the third predetermined time in judging result
Hinder signal.
In another preferred example, above-mentioned voltage detecting determining device further includes 3rd resistor and switch element；
3rd resistor and switch element series connection, second resistance and the 3rd resistor being cascaded and switch element are in parallel；
Determining device is additionally configured to export second electrical level signal in the open state to controller in switch element, is opening
It closes and exports third level signal when element is in close state to controller；
Controller is additionally configured to be transformed into opening from closed state according to the third level signal control switch received
State.
It can be on the basis of not changing former printer circuitry, by increasing comprising determining device and switch element and corresponding resistor
Voltage judge detector, realize and fixing heating failure accurately identified, and but printing equipment lower in supply voltage still may be used
In the case where working on, according to the specific failure cause judged, taking reduces printing equipment print speed or control dress
The measure to stop working is set, to improve the utilization rate and safety in utilization of device.
In another preferred example, above-mentioned determining device includes optocoupler, and switch element includes triode.
Embodiments of the present invention also disclose a kind of printing equipment, the inspection including as above documented fixing heating failure
Measurement equipment, or the detection circuit of the fixing heating failure as documented by as above.
Detailed description of the invention
Fig. 1 is the process signal of the detection method of fixing heating failure in the printing equipment of first embodiment of the invention
Figure.
Fig. 2 is the process signal of the detection method of fixing heating failure in the printing equipment of second embodiment of the invention
Figure.
Fig. 3 is the structural representation of the detection device of fixing heating failure in the printing equipment of third embodiment of the invention
Figure.
Fig. 4 is the structural representation of the detection device of fixing heating failure in the printing equipment of third embodiment of the invention
Figure.
Fig. 5 is the structural schematic diagram of the detection circuit of fifth embodiment of the invention.
Fig. 6 shows the circuit diagram of a specific example of fifth embodiment of the invention.
Fig. 7 shows the example of a physical circuit of sixth embodiment of the invention.
Specific embodiment
In the following description, many technical details are proposed in order to make reader more fully understand the present invention.But this
The those of ordinary skill in field is appreciated that even if without these technical details and many variations based on the following respective embodiments
And modification, each claim technical solution claimed of the present invention also may be implemented.
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to implementation of the invention
Mode is described in further detail.In the record of the following drawings, same or similar appended drawing reference instruction it is identical or
Similar component and component, and be possible to omit the description.
The first embodiment of the present invention is related to a kind of detection methods of fixing heating failure in printing equipment.Fig. 1 is this
The flow diagram of the detection method of fixing heating failure in the printing equipment of invention first embodiment.
Specifically, as shown in Figure 1, should detection method includes the following steps:
In the first detection judgment step 101, the temperature of the fixing heating element of detection device simultaneously judges to be fixed heating part
Whether part within the first predetermined time is warming up to fixing temperature.
If a determination be made that then illustrating to be fixed heating element heating normally, terminate this process；Otherwise, into the second inspection
Survey judgment step 102.
In the second detection judgment step 102, whether the supply voltage of detection device simultaneously judges supply voltage less than first
Voltage threshold.
If it is judged that be it is yes, then enter third detect judgment step 103；Otherwise, step is exported into second signal
105。
Judgment step 103 is detected in third, whether the temperature of detection fixing heating element simultaneously judges the fixing heating element
It is warming up to fixing temperature within second scheduled time, wherein the second predetermined time was according to preset voltage-heating-up time
Time corresponding with the first voltage threshold value determined by corresponding relationship, the voltage-heating-up time corresponding relationship characterize power supply
Voltage value and fixing heating element are heated to the corresponding relationship between fixing temperature required time.Such corresponding relationship can be
It is built in the form of list in the device for implementing to determine, however, the present invention is not limited thereto, as long as can symbolize in this way
Corresponding relationship so as to which the corresponding heating-up time can be retrieved according to scheduled voltage value, in the form of other are any exist
?.
If it is judged that be it is yes, then enter the first signal export step 104；Otherwise enter second signal and export step
105.
In the first signal output step 104, output indicates the too low Fisrt fault signal of supply voltage.Hereafter terminate this
Process.
In second signal output step 105, output indicates that the component of the temperature of detection fixing heating element breaks down
And/or the second fault-signal that fixing heating element breaks down, while controlling described device and stopping working.Wherein, above-mentioned
One predetermined time is less than the second predetermined time.Hereafter terminate this process.
It is worth noting that, in each embodiment of the present invention, the sequencing of above-mentioned steps 101 and step 102 can be with
It exchanges, can also carry out simultaneously, herein with no restrictions.
It should, furthermore, be noted that generally when heated between be more than the first predetermined time after, device can stop to fixing
The heating of heating element, therefore to judge whether be that sensor or fixing heating element work bad (or under supply voltage)
Caused failure needs to continue to start the heating to fixing heating element.For example, in a preferred example, above-mentioned third detection is sentenced
Disconnected step 103 includes following sub-step:
Heating extends sub-step, if to the heating for being fixed heating element because stopping more than the first predetermined time,
Extend the heating time of fixing heating element；
Heating detection judges sub-step, and the temperature of heating element is fixed after detection extension heating time and judges fixing heating
Whether component is warming up to fixing temperature within second scheduled time.
Whether within the third predetermined time fixing temperature is warming up to fixing heating element, this method can also be taken.
Furthermore, it is to be understood that in each embodiment of the present invention, it is fixed judging whether to be warming up within second scheduled time
When shadow temperature, the heating-up time is the entire heating-up time to fixing heating element, that is, includes the first predetermined time and rising above
Time used after first predetermined time.Printing equipment includes duplicator, printer, compounding machine comprising reprographic printing function etc.
Device with printing function.
This method can determine whether out that the concrete reason for being heated to fixing temperature time-out is electricity by detecting to supply voltage
Source brownout or working sensor it is bad or fixing heating element go wrong, mentioned to provide the user with correct failure
Show information, avoids unnecessary maintenance work, economize on resources.
Second embodiment of the present invention is related to a kind of detection method of fixing heating failure in printing equipment.Second implements
Mode is the improvement carried out in first embodiment, is mainly theed improvement is that:
It is lower in supply voltage but in the case that printing equipment may continue to work, if it is determined that fixing heating element goes out not
The reason of fixing temperature capable of being warming up within the first predetermined time is can then to reduce printing equipment printing speed caused by voltage is lower
Degree, continues the working condition of holding meanss, increases operation rate.
Fig. 2 is the process signal of the detection method of fixing heating failure in the printing equipment of second embodiment of the invention
Figure.Specifically, as shown in Fig. 2, should detection method includes the following steps:
In the first detection judgment step 201, the temperature of the fixing heating element of detection device simultaneously judges to be fixed heating part
Whether part within the first predetermined time is warming up to fixing temperature.
If a determination be made that then illustrating to be fixed heating element heating normally, terminate this process；Otherwise, into the second inspection
Survey judgment step 202.
In the second detection judgment step 202, whether the supply voltage of detection device simultaneously judges supply voltage less than first
Voltage threshold.
If it is judged that be it is yes, then enter third detect judgment step 203；Otherwise, into voltage judgment step 206.
Judgment step 203 is detected in third, whether the temperature of detection fixing heating element simultaneously judges the fixing heating element
Be warming up to fixing temperature within second scheduled time, wherein the second predetermined time be according to preset supply voltage value with
Fixing heating element is heated to the corresponding relationship between fixing temperature required time, acquired corresponding with first voltage threshold value
Time.
If it is judged that be it is yes, then enter the first signal export step 204；Otherwise enter second signal and export step
205.
In the first signal output step 204, output indicates the too low Fisrt fault signal of supply voltage.Hereafter terminate this
Process.
In second signal output step 205, output indicates that the component of the temperature of detection fixing heating element breaks down
And/or the second fault-signal that fixing heating element breaks down, while controlling described device and stopping working.Wherein, above-mentioned
One predetermined time is less than the second predetermined time.Hereafter terminate this process.
In voltage judgment step 206, judge whether supply voltage is less than second voltage threshold value.
If it is judged that be it is yes, then enter the 4th detection judgment step 207；Otherwise, step is exported into third signal
209。
In the 4th detection judgment step 207, the temperature of detection fixing heating element simultaneously judges that the fixing heating element is
It is no to be warming up to fixing temperature within the third predetermined time, wherein the third predetermined time is according to preset supply voltage value
The corresponding relationship between fixing temperature required time, i.e. voltage-heating-up time corresponding relationship, institute are heated to fixing heating element
The determining time corresponding with current power voltage value.
If it is judged that be it is yes, then enter print processing step 208；Otherwise, step is exported into above-mentioned second signal
205。
The manuscript paper print speed of device is reduced in print processing step 208.Wherein, the above-mentioned third predetermined time is less than
Two predetermined times were simultaneously greater than for the first predetermined time, and second voltage threshold value is greater than first voltage threshold value.
Furthermore, it is to be understood that above-mentioned first predetermined time be supply voltage within the scope of normal working voltage when, will be fixed
Time needed for heating element is warming up to fixing temperature.Correspondingly, can test under each supply voltage value will determine by experiment
Time needed for shadow heating element is warming up to fixing temperature, such as the second predetermined time correspond to first voltage threshold value, the pre- timing of third
Between correspond to some or certain part continuous voltage value between first voltage threshold value and second voltage threshold value.For example, certain printing equipment
Normal voltage operation range be 190V~220V, the corresponding heating-up time, operating on low voltage range was 138V in 1min~2min
~190V, the corresponding heating-up time, the heating-up time was greater than 3min in 2min~3min, and when voltage is lower than 138V, indicated electricity
Press through it is low, should control device stop working, the signal of concurrent power transmission source brownout prompts user to detect power supply to user.
It should be noted that these voltages and time value can be set as needed in a particular application in order to which presenting a demonstration property illustrates and provides
Corresponding value, herein with no restrictions.
Present embodiment is the improvement embodiment of first embodiment, and present embodiment can be mutual with first embodiment
Cooperation is implemented.The relevant technical details mentioned in first embodiment are still effective in the present embodiment, in order to reduce repetition,
Which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in first embodiment.
Each method embodiment of the invention can be realized in a manner of software, hardware, firmware etc..Regardless of the present invention be with
Software, hardware or firmware mode realize that instruction code may be stored in any kind of computer-accessible memory
In (such as permanent perhaps revisable volatibility is perhaps non-volatile solid or non-solid, it is fixed or
The replaceable medium etc. of person).Equally, memory may, for example, be programmable logic array (Programmable Array
Logic, referred to as " PAL "), random access memory (Random Access Memory, referred to as " RAM "), it may be programmed read-only deposit
Reservoir (Programmable Read Only Memory, referred to as " PROM "), read-only memory (Read-Only Memory, letter
Claim " ROM "), electrically erasable programmable read-only memory (Electrically Erasable Programmable ROM, referred to as
" EEPROM "), disk, CD, digital versatile disc (Digital Versatile Disc, referred to as " DVD ") etc..
Third embodiment of the present invention discloses a kind of detection device of fixing heating failure in printing equipment.Fig. 3 is
The structural schematic diagram of the detection device of fixing heating failure in the printing equipment of third embodiment of the invention.
Specifically, as shown in figure 3, the detection device includes:
Whether the second detection judging unit, be configured as the supply voltage of detection device and judge supply voltage less than first
Voltage threshold.
First detection judging unit is configured as the temperature of the fixing heating element of detection device and judges to be fixed heating part
Whether part within the first predetermined time is warming up to fixing temperature.
Third detects judging unit, is for the judging result in the second detection judging unit and the first detection judgement is single
When the judging result of member is no, whether the temperature of detection fixing heating element simultaneously judges the fixing heating element in the second pre- timing
It is interior to be warming up to fixing temperature, wherein the second predetermined time was true according to preset voltage-heating-up time corresponding relationship institute
Fixed time corresponding with the first voltage threshold value, the voltage-heating-up time corresponding relationship characterization supply voltage value and fixing
Heating element is heated to the corresponding relationship between fixing temperature required time.
First signal output unit, for when the judging result of third detection judging unit is to be, output to indicate power supply
The Fisrt fault signal of brownout, and, when the judging result of third detection judging unit is no, output indicates that detection is fixed
The second fault-signal that the component of the temperature of shadow heating element breaks down and/or fixing heating element breaks down, same to time control
Printing equipment processed stops working.Wherein, above-mentioned first predetermined time is less than the second predetermined time.
In another preferred example, above-mentioned third detection judging unit includes following subelement:
Heating extends subelement, in the heating to fixing heating element because stopping more than the first predetermined time
When, extend the heating time of fixing heating element；
Heating detection judgment sub-unit, for being fixed the temperature of heating element after detecting extension heating time and judging to be fixed
Whether heating element is warming up to fixing temperature within second scheduled time.
First embodiment is method implementation corresponding with present embodiment, and present embodiment can be implemented with first
Mode is worked in coordination implementation.The relevant technical details mentioned in first embodiment are still effective in the present embodiment, in order to
It reduces and repeats, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in the first implementation
In mode.
4th embodiment of the invention is related to a kind of detection device of fixing heating failure in printing equipment.4th implements
Mode is the improvement carried out in third embodiment, is mainly theed improvement is that:
It is lower in supply voltage but in the case that printing equipment may continue to work, if it is determined that fixing heating element goes out not
The reason of fixing temperature capable of being warming up within the first predetermined time is can then to reduce printing equipment printing speed caused by voltage is lower
Degree, continues the working condition of holding meanss, increases operation rate.
Fig. 4 is the structural representation of the detection device of fixing heating failure in the printing equipment of third embodiment of the invention
Figure.Specifically, as shown in figure 4, improved detection device is compared with third embodiment, further includes:
Voltage judging unit, for judging whether supply voltage is small when the judging result of the second detection judging unit is no
In second voltage threshold value.
4th detection judging unit, for the judging result of voltage judging unit be and first detection judging unit
When judging result is no, whether the temperature of detection fixing heating element simultaneously judges the fixing heating element within the third predetermined time
It is warming up to fixing temperature, wherein the third predetermined time is according to preset supply voltage value and fixing heating element heating
Corresponding relationship to fixing temperature required time, i.e., it is electric with current power determined by voltage-heating-up time corresponding relationship
Pressure is worth the corresponding time.
Print process unit, for when the judging result of the 4th detection judging unit is to be, the manuscript paper for reducing device to be beaten
Print-out rate.Wherein, the above-mentioned third predetermined time less than the second predetermined time and was greater than for the first predetermined time.
Second signal output unit, for the judging result of voltage judging unit be and the 4th detection judging unit
When judging result is no, the second fault-signal is exported, while controlling printing equipment and stopping working.
Third signal output unit is all no for the judging result in voltage judging unit and the 4th detection judging unit
When, the second fault-signal is exported, while controlling printing equipment and stopping working.
Present embodiment is the improvement embodiment of third embodiment, and present embodiment can be mutual with third embodiment
Cooperation is implemented.The relevant technical details mentioned in third embodiment are still effective in the present embodiment, in order to reduce repetition,
Which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in third embodiment.
It should be noted that each unit mentioned in each equipment embodiment of the present invention is all logic unit, physically,
One logic unit can be a physical unit, be also possible to a part of a physical unit, can also be with multiple physics
The combination of unit realizes that the Physical realization of these logic units itself is not most important, these logic units institute reality
The combination of existing function is only the key for solving technical problem proposed by the invention.In addition, in order to protrude innovation of the invention
Part, there is no the technical problem relationship proposed by the invention with solution is less close for the above-mentioned each equipment embodiment of the present invention
Unit introduce, this does not indicate above equipment embodiment and there is no other units.
5th embodiment of the invention discloses a kind of detection circuit of fixing heating failure in printing equipment.Fig. 5 is
The structural schematic diagram of the detection circuit of fifth embodiment of the invention.
Specifically, the fixing for being configured as detection device adds as shown in figure 5, the detection circuit includes: heating detector
The temperature of thermal part, the temperature signal of output characterization temperature.
Whether voltage detecting determining device, is configured as the supply voltage of detection device, and judge supply voltage less than first
Voltage threshold, output indicate the first level signal of judging result.
Controller is connect with heating detector and voltage detector, is configured to receive temperature signal and voltage
First level signal of detector output, controller judge whether fixing heating element is predetermined first according to above-mentioned temperature signal
It is warming up to fixing temperature in time, is that fixing heating element is not warming up to fixing temperature within the first predetermined time in judging result
Degree and the first level signal indicate that judging result is when being, which judges that the fixing adds according to the temperature of fixing heating element
Whether thermal part is warming up to fixing temperature within second scheduled time, wherein the second predetermined time was according to preset electricity
Time corresponding with first voltage threshold value determined by pressure-heating-up time corresponding relationship, voltage-heating-up time corresponding relationship characterization
Supply voltage value and fixing heating element are heated to the corresponding relationship between fixing temperature required time；It is fixing in judging result
Heating element exports Fisrt fault signal when being warming up to fixing temperature within second scheduled time, is fixing heating in judging result
Component exports the second fault-signal when not being warming up to fixing temperature within second scheduled time.
It is worth noting that, above controller can be a controller in actual circuit, it is also possible to multiple controls
Device completes corresponding function, and controller can be the control devices such as central processing unit, single-chip microcontroller, digital signal processor.Control
Device processed can be located in printing equipment, be also possible to the controller having in the server or computer that connect with printing equipment
Part.Herein with no restrictions.
In a preferred example, Fig. 6 shows the circuit diagram of a specific example of the embodiment, as shown in fig. 6, above-mentioned
Voltage detecting determining device includes: first resistor 8, second resistance 9 and determining device；First resistor 8 is connected with second resistance 9, and the
The power supply of one end connection printing equipment of one resistance 8；Second resistance 9 is in parallel with determining device；Determining device and controller (not shown)
Connection, is configured as judging the voltage swing at second resistance both ends, and be sent to control for judging result as the first level signal
Device processed.Other devices are the device in printer in the prior art in Fig. 6, therein 1 for printing equipment direct-current input power supplying,
2 rectification bridge heaps, 3 be rectification capacitor, 4 be the pulse-width controller of Switching Power Supply, 5 transformation coils, 6 bit switch fields
Effect transistor, 7 secondary side DC loops.Preferably, above-mentioned determining device includes optocoupler 13 and the 4th resistance 15, and 14 be optocoupler
Voltage detecting as a result, i.e. the first level signal.The workflow of the circuit is as follows:
Direct current power source voltage is divided by first resistor 8 and second resistance 9, the voltage being added on optocoupler 13 and
Pressure drop on two resistance 19 is identical, and the first voltage threshold value as an example is 138V, when the pressure drop in second resistance 19 is greater than
Optocoupler is connected when 80V.If supply voltage is greater than 138V, the pressure drop in second resistance 19 is greater than 80V, optocoupler conducting, judgement
Device output indicates that supply voltage is greater than the first level signal of first voltage threshold value, if supply voltage is less than 138V, optocoupler
It is not turned on, output indicates that supply voltage is less than the second electrical level signal of first voltage threshold value.
Furthermore, it is to be understood that above-mentioned first predetermined time be supply voltage within the scope of normal working voltage when, will be fixed
Time needed for heating element is warming up to fixing temperature.Correspondingly, can test under each supply voltage value will determine by experiment
Time needed for shadow heating element is warming up to fixing temperature, such as the second predetermined time correspond to first voltage threshold value, the pre- timing of third
Between correspond to some or certain part continuous voltage value between first voltage threshold value and second voltage threshold value.For example, certain printing equipment
Normal voltage operation range be 190V~220V, the corresponding heating-up time, operating on low voltage range was 138V in 1min~2min
~190V, the corresponding heating-up time, the heating-up time was greater than 3min in 2min~3min, and when voltage is lower than 138V, indicated electricity
Press through it is low, should control device stop working, the signal of concurrent power transmission source brownout prompts user to detect power supply to user.
It should be noted that these voltages and time value can be set as needed in a particular application in order to which presenting a demonstration property illustrates and provides
Corresponding value, herein with no restrictions.
By increasing voltage detecting determining device and control on the basis of the circuit of the heating detector having in existing printer
Device processed can effectively judge that the concrete reason for being heated to fixing temperature time-out is that supply voltage is too low or working sensor is bad
Or fixing heating element goes wrong, to provide the user with correct fault cues information, avoids unnecessary maintenance work,
It economizes on resources.
Present embodiment is the hardware circuit embodiment of method described in first embodiment, institute in first embodiment
The correlative detail that can be used in hardware circuit being related to can be used for present embodiment, and details are not described herein.
Sixth embodiment of the invention discloses a kind of detection circuit of fixing heating failure in printing equipment.6th is real
Apply mode to be improved in the 5th embodiment, the improvement is that: can on the basis of not changing former printer circuitry,
Detector is judged by increasing the voltage comprising determining device and switch element and corresponding resistor, realizes the standard to fixing heating failure
Really identification, and it is lower in supply voltage but in the case that printing equipment may continue to work, according to the specific failure judged
Reason, the measure for taking reduction printing equipment print speed or control device to stop working, to improve the utilization rate of device and make
Use safety.
Specifically, in this embodiment, above-mentioned voltage detecting determining device is additionally configured to whether judge supply voltage
Greater than first voltage threshold value and it is less than second voltage threshold value, and exports the second electrical level signal for indicating judging result；
Controller is additionally configured to receive second electrical level signal and temperature signal respectively, is fixing heating part in judging result
The judging result that part is not warming up to fixing temperature and second electrical level signal within the first predetermined time and indicates is controller when being
Judge whether the fixing heating element within the third predetermined time is warming up to fixing temperature according to the temperature of fixing heating element,
In, the third predetermined time is the current voltage value corresponding time according to determined by voltage-heating-up time corresponding relationship；Judging
Control device reduces print speed when being as a result warming up to fixing temperature within the third predetermined time for fixing heating element, is judging
The second fault-signal is exported when not as a result being warming up to fixing temperature within the third predetermined time for fixing heating element.
In a preferred example, Fig. 7 shows the example of a physical circuit of present embodiment, and the example is shown in Fig. 6
Circuit base on, increase following device, i.e. voltage detecting determining device further includes 3rd resistor and switch element；3rd resistor
It connects with switch element, second resistance and the 3rd resistor being cascaded and switch element are in parallel；Determining device is additionally configured to
Second electrical level signal is exported in the open state to controller in switch element, the output when switch element is in close state
Third level signal is to controller；Controller is additionally configured to according to the third level signal control switch that receives from closing shape
State is transformed into opening state.Preferably, determining device includes optocoupler and the 4th resistance, and switch element includes triode and third electricity
Resistance.The workflow of the circuit is as follows:
Under original state, the triode in switch element is in the conductive state, i.e., 3rd resistor 10 and second resistance 9 be simultaneously
Connection.Direct current power source voltage is added in 3rd resistor 10 and second resistance 9, after the partial pressure of first resistor 8 at this point, if power supply is electric
Pressure is greater than second voltage threshold value, then optocoupler 13 is connected, and illustrates that supply voltage value is normal.If it is less than second voltage threshold value, then light
Coupling 13 is not turned on, outputs level signals to controller, and controller is according to the signal output voltage switching signal received to switch
Element 12, the triode in switch element are changed into closing situation by state (opening state), the pressure drop in second resistance 9
Increase, at this time if optocoupler 13 is connected, exports second electrical level signal to controller, second electrical level signal at this time indicates power supply
Voltage is greater than first voltage threshold value and is less than second voltage threshold value；If optocoupler 13 is still not turned on, the first level signal is exported
To controller, indicate that supply voltage is less than first voltage threshold value.
Present embodiment is the improvement embodiment of the 5th embodiment, and present embodiment can be mutual with the 5th embodiment
Cooperation is implemented.The relevant technical details mentioned in 5th embodiment are still effective in the present embodiment, in order to reduce repetition,
Which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment are also applicable in the 5th embodiment.
Seventh embodiment according to the present invention provides a kind of printing equipment, which includes according to third or
The detection device of documented fixing heating failure in four embodiments, alternatively, including being remembered according in the 5th or sixth embodiment
The detection circuit of the fixing heating failure of load.
It should be noted that in the claim and specification of this patent, such as first and second or the like relationship
Term is only used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying
There are any actual relationship or orders between these entities or operation.Moreover, the terms "include", "comprise" or its
Any other variant is intended to non-exclusive inclusion so that include the process, methods of a series of elements, article or
Equipment not only includes those elements, but also including other elements that are not explicitly listed, or further include for this process,
Method, article or the intrinsic element of equipment.In the absence of more restrictions, being wanted by what sentence " including one " limited
Element, it is not excluded that there is also other identical elements in the process, method, article or apparatus that includes the element.Although
By referring to some of the preferred embodiment of the invention, the present invention is shown and described, but this field is common
Technical staff should be understood that can to it, various changes can be made in the form and details, without departing from spirit and model of the invention
It encloses.
Claims (16)
1. the detection method of fixing heating failure in a kind of printing equipment, which comprises the following steps:
First detection judgment step, detects the temperature of the fixing heating element of described device and judges that the fixing heating element is
It is no to be warming up to fixing temperature within the first predetermined time；
Second detection judgment step, detects the supply voltage of described device and judges whether the supply voltage is less than first voltage
Threshold value；
Third detect judgment step, if it is judged that the fixing heating element be not warming up within the first predetermined time it is described fixed
Shadow temperature and the supply voltage are less than first voltage threshold value, then further detect the temperature of the fixing heating element and judgement
Whether the fixing heating element is warming up to fixing temperature within second scheduled time, wherein second predetermined time is basis
Time corresponding with the first voltage threshold value determined by preset voltage-heating-up time corresponding relationship, the voltage-
Heating-up time corresponding relationship characterizes corresponding between the time required to supply voltage value is heated to fixing temperature with fixing heating element
Relationship；
First signal exports step, if it is judged that the fixing heating element is warming up to fixing temperature within second scheduled time
Degree then exports the Fisrt fault signal for indicating that supply voltage is too low；And if it is judged that the fixing heating element not
Fixing temperature is warming up in two predetermined times, then export indicate detection fixing heating element temperature component break down and/
Or the second fault-signal that the fixing heating element breaks down；
Wherein, first predetermined time is less than second predetermined time.
2. detection method as described in claim 1, which is characterized in that it is described second detection judgment step after further include with
Lower step:
Voltage judgment step then judges that the supply voltage is if it is judged that the supply voltage is greater than first voltage threshold value
It is no to be less than second voltage threshold value；
4th detection judgment step, if it is judged that the supply voltage is less than second voltage threshold value and the fixing heating element
Fixing temperature is not warming up within the first predetermined time, then detect the temperature of the fixing heating element and judges that the fixing is heated
Whether component within the third predetermined time is warming up to fixing temperature, wherein when the third predetermined time is according to the voltage-heating
Between the time corresponding with current power voltage value determined by corresponding relationship；
Print processing step then reduces if it is judged that fixing heating element is warming up to fixing temperature within the third predetermined time
The manuscript paper print speed of described device；
Wherein, the third predetermined time is less than second predetermined time and is greater than first predetermined time, and described second
Voltage threshold is greater than the first voltage threshold value.
3. method according to claim 2, which is characterized in that further include following after the 4th detection judgment step
Step:
Second signal exports step, if it is judged that the fixing heating element is not warming up to fixing temperature within the third predetermined time
Degree, then export second fault-signal.
4. method according to claim 2, which is characterized in that further comprising the steps of after the voltage judgment step:
Third signal exports step, if the judging result is that supply voltage is greater than second voltage threshold value and the fixing is heated
Component is not warming up to fixing temperature within the first predetermined time, then exports second fault-signal.
5. method according to any one of claims 1 to 4, which is characterized in that third detection judgment step include with
Lower sub-step:
Heating extends sub-step, if extended to the heating for being fixed heating element because stopping more than the first predetermined time
The heating time of the fixing heating element；
Heating detection judges sub-step, detects the temperature of the fixing heating element after extending heating time and judges fixing heating
Whether component within second predetermined time is warming up to fixing temperature.
6. the detection device of fixing heating failure in a kind of printing equipment characterized by comprising
First detection judging unit is configured as the temperature of the fixing heating element of detection described device and judges that the fixing adds
Whether thermal part within the first predetermined time is warming up to fixing temperature；
Second detection judging unit is configured as the supply voltage of detection described device and judges whether the supply voltage is less than
First voltage threshold value；
Third detects judging unit, is for the judging result in the second detection judging unit and first detection is sentenced
When the judging result of disconnected unit is no, further detects the temperature of the fixing heating element and judge that the fixing heating element is
It is no to be warming up to fixing temperature within second scheduled time, wherein when the second predetermined time was according to preset voltage-heating
Between the time corresponding with the first voltage threshold value determined by corresponding relationship, the voltage-heating-up time corresponding relationship characterizes
Supply voltage value and fixing heating element are heated to the corresponding relationship between fixing temperature required time；
First signal output unit, for when the judging result of third detection judging unit is to be, output to indicate power supply
The Fisrt fault signal of brownout, and, when the judging result of third detection judging unit is no, output indicates inspection
The second failure letter that the component for measuring the temperature of shadow heating element breaks down and/or the fixing heating element breaks down
Number；
Wherein, first predetermined time is less than second predetermined time.
7. detection device as claimed in claim 6, which is characterized in that further include with lower unit:
Voltage judging unit, for judging whether supply voltage is small when the judging result of the second detection judging unit is no
In second voltage threshold value；
4th detection judging unit is and the first detection judgement is single for the judging result in the voltage judging unit
When the judging result of member is no, detects the temperature of the fixing heating element and judge whether the fixing heating element is pre- in third
Fixing temperature is warming up in fixing time, wherein the third predetermined time is determined according to the voltage-heating-up time corresponding relationship
Time corresponding with current power voltage value；
Print process unit, for reducing the original text of described device when the judging result of the 4th detection judging unit is to be
Paper print speed；
Wherein, the third predetermined time is less than second predetermined time and is greater than first predetermined time.
8. detection device as claimed in claim 7, which is characterized in that further include with lower unit:
Second signal output unit is and the 4th detection judgement is single for the judging result in the voltage judging unit
When the judging result of member is no, second fault-signal is exported.
9. detection device as claimed in claim 7, which is characterized in that further include with lower unit:
Third signal output unit, for detecting the judging result of judging unit all in the voltage judging unit and the described 4th
When being no, second fault-signal is exported.
10. the detection device as described in any one of claim 6 to 9, which is characterized in that the third detects judging unit packet
Include following subelement:
Heating extends subelement, for, because of the when of stopping more than the first predetermined time, prolonging in the heating to fixing heating element
The heating time of the long fixing heating element；
Heating detection judgment sub-unit, for detect extend heating time after it is described be fixed heating element temperature and judge to be fixed
Whether heating element within second predetermined time is warming up to fixing temperature.
11. the detection circuit of fixing heating failure in a kind of printing equipment, comprising: heating detector is configured as described in detection
The temperature of the fixing heating element of device, output characterize the temperature signal of the temperature；
It is characterized in that, the detection circuit further include:
Voltage detecting determining device, is configured as the supply voltage of detection described device, and judges whether the supply voltage is less than
First voltage threshold value, output indicate the first level signal of judging result；
Controller is connect with the heating detector and voltage detector, is configured to receive the temperature signal, and
First level signal of the voltage detector output,
The controller judges whether the fixing heating element is warming up within the first predetermined time according to the temperature signal
Fixing temperature,
It is that fixing heating element is not warming up to fixing temperature within the first predetermined time and first level is believed in judging result
Number indicate that judging result is when being, which judges the fixing heating element whether the according to the temperature of fixing heating element
Fixing temperature is warming up in two predetermined times, wherein the second predetermined time was corresponding according to preset voltage-heating-up time
Time corresponding with the first voltage threshold value determined by relationship, the voltage-heating-up time corresponding relationship characterization power supply electricity
Pressure value and fixing heating element are heated to the corresponding relationship between fixing temperature required time；
It is that output indicates the power supply when fixing heating element is warming up to fixing temperature within second scheduled time in judging result
The Fisrt fault signal of brownout is that fixing heating element is not warming up to fixing temperature within second scheduled time in judging result
Output indicates that the component of the temperature of the detection fixing heating element breaks down and/or the fixing heating element occurs when spending
Second fault-signal of failure.
12. detection circuit as claimed in claim 11, which is characterized in that the voltage detecting determining device include: first resistor,
Second resistance and determining device；
First resistor is connected with second resistance, and one end of the first resistor connects the power supply of the printing equipment；
Second resistance is in parallel with the determining device；
The determining device is connect with the controller, is configured as judging the voltage swing at second resistance both ends, and judgement is tied
Fruit is sent to the controller as first level signal.
13. detection circuit as claimed in claim 12, which is characterized in that the voltage detecting determining device is additionally configured to judge
Whether the supply voltage is greater than first voltage threshold value and is less than second voltage threshold value, and exports the second electricity for indicating judging result
Ordinary mail number；
The controller is additionally configured to receive the second electrical level signal and the temperature signal respectively,
It is that fixing heating element is not warming up to fixing temperature within the first predetermined time and the second electrical level is believed in judging result
Number judging result indicated is when being, the controller according to the temperature of fixing heating element judge the fixing heating element whether
Third is warming up to fixing temperature in the predetermined time, wherein the third predetermined time is according to the voltage-heating-up time corresponding relationship
The identified time corresponding with current power voltage value；
It is that control described device reduces when fixing heating element is warming up to fixing temperature within the third predetermined time in judging result
Print speed is the second event of output when fixing heating element is not warming up to fixing temperature within the third predetermined time in judging result
Hinder signal.
14. detection circuit as claimed in claim 13, which is characterized in that the voltage detecting determining device further includes 3rd resistor
And switch element；
The 3rd resistor and switch element series connection, second resistance and the 3rd resistor being cascaded and switch element are in parallel；
The determining device is additionally configured to export second electrical level signal in the open state to the control in the switch element
Device processed exports third level signal when the switch element is in close state to the controller；
The controller is additionally configured to be turned according to the third level signal control switch received from closed state
Change to opening state.
15. detection circuit as claimed in claim 14, which is characterized in that the determining device includes optocoupler, the switch element
Including triode.
16. a kind of printing equipment, which is characterized in that the detection including the fixing heating failure as described in claim 6-10 is set
It is standby, or the detection circuit of the fixing heating failure as described in claim 11-14.
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| CN103698052A (en) * | 2012-09-27 | 2014-04-02 | 株式会社理光 | Temperature sensor abnormality judgment method and imaging device employing same |
| CN103885311A (en) * | 2012-12-21 | 2014-06-25 | 株式会社理光 | Detection device for fixing apparatus state and image formation device |
| CN104570666A (en) * | 2013-10-16 | 2015-04-29 | 株式会社理光 | Fixing device and image forming device |
| JP2015152637A (en) * | 2014-02-10 | 2015-08-24 | キヤノンファインテック株式会社 | Image forming apparatus and method of confirming mounting of fixing film thereof |
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2015
- 2015-09-30 CN CN201510640842.8A patent/CN106556997B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698052A (en) * | 2012-09-27 | 2014-04-02 | 株式会社理光 | Temperature sensor abnormality judgment method and imaging device employing same |
| CN103885311A (en) * | 2012-12-21 | 2014-06-25 | 株式会社理光 | Detection device for fixing apparatus state and image formation device |
| CN104570666A (en) * | 2013-10-16 | 2015-04-29 | 株式会社理光 | Fixing device and image forming device |
| JP2015152637A (en) * | 2014-02-10 | 2015-08-24 | キヤノンファインテック株式会社 | Image forming apparatus and method of confirming mounting of fixing film thereof |
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