CN106814561B - Image forming apparatus - Google Patents
Image forming apparatus Download PDFInfo
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- CN106814561B CN106814561B CN201510857601.9A CN201510857601A CN106814561B CN 106814561 B CN106814561 B CN 106814561B CN 201510857601 A CN201510857601 A CN 201510857601A CN 106814561 B CN106814561 B CN 106814561B
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- image forming
- test pattern
- control unit
- forming apparatus
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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
- G03G15/5025—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 original characteristics, e.g. contrast, density
-
- 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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
- Color Electrophotography (AREA)
Abstract
The image forming apparatus of image is capable of forming the present invention provides even if in position adjustment process and in the case that when concentration adjustment processing generates exception.The image forming apparatus of present embodiment includes transfer belt, image forming part, sensor and control unit.The image being formed on belt surface is transferred on sheet material by transfer belt.Image forming part forms test pattern when image quality is maintained and handled on belt surface.Sensor detects test pattern.Display unit shows picture.Control unit maintains to receive the state of the instruction of image formation in the case where test pattern is not detected in sensor.
Description
Technical field
Embodiments of the present invention are related to image forming apparatus.
Background technique
The image forming apparatus of tandem moor forms assorted figure by laser optical system in assorted photosensitive drums
Picture.Image forming apparatus overlaps the image in each photosensitive drums in transfer belt, forms a width color image.Image forming apparatus
Color image in transfer belt is transferred to sheet material (sheet).
In image forming apparatus, photosensitive drums change at any time sometimes or make to swash due to the rising of temperature in device
Each element of light optical system generates opposite position deviation.In image forming apparatus, if generating above situation, it is likely that
The assorted image of overlapping is set to generate position deviation or concentration deviation.
Therefore, at the position adjustment process and concentration adjustment that image forming apparatus carries out assorted image in preheating etc.
Reason.At this point, image forming apparatus forms assorted position adjustment pattern and concentration adjustment pattern in transfer belt.Hereinafter, having
When the position adjustment process of assorted image and concentration adjustment processing be recorded as image quality maintenance processing.In addition, sometimes by position
It sets adjustment pattern and concentration adjustment pattern is recorded as test pattern.
Image forming apparatus detects test pattern by sensor, corrects position and the concentration of assorted image.
If the mechanism for carrying out image formation occurs unfavorable condition and the concentration reduction of test pattern or sensor occurs
Failure, then image forming apparatus can not detect test pattern.Image forming apparatus does not detect survey when image quality is maintained and handled
In the case where attempting case, it is judged as that generation is abnormal.Then, image forming apparatus forbids the execution of presswork, copying operation, stops
Only operate.
However, there are the following problems for previous image forming apparatus: image lower for even quality is also intended to carry out
For the user of printing, convenience is poor.
Summary of the invention
The image forming apparatus of present embodiment includes transfer belt, image forming part, sensor and control unit.Transfer belt
The image being formed on belt surface is transferred on sheet material.Image forming part is formed on belt surface when image quality maintains to handle and is surveyed
Attempt case.Sensor detects test pattern.Display unit shows picture.Control unit is the case where test pattern is not detected in sensor
Lower maintenance receives the state of the instruction of image formation.
Detailed description of the invention
Fig. 1 is the cross-sectional view for indicating image forming apparatus.
Fig. 2 is the figure for indicating the positional relationship of first sensor, second sensor and test pattern.
Fig. 3 is the flow chart for illustrating position adjustment process.
Fig. 4 is the figure for the display picture for indicating abnormal when generating.
Fig. 5 is the flow chart for illustrating concentration adjustment processing.
Specific embodiment
(first embodiment)
Fig. 1 is the cross-sectional view for indicating image forming apparatus 200.
Image forming apparatus 200 is MFP (Multi Function Peripheral, all-in-one multifunctional machine), has print
Multiple functions such as brush, duplicating, FAX (fax).
Image forming apparatus 200 includes image reading unit R and image forming part Q.
Image reading unit R is by scanning optics 10 to being placed in original copy pallet Rt and pass through auto document feeder
The original copy on original copy and document board 91 that 9 (ADF:Auto Document Feeder) are conveyed automatically is read out.
Image data or external device (ED) of the image forming part Q based on the image reading unit R original copy read are formed to image
The image data that device 200 transmits, is formed in sheet material for the image based on toner.
Image forming part Q include toner cartridge 1Y~1K, pick-up roller 51~54, laser optical system 30, photosensitive drums 2Y~
2K, developer roll 3Y~3K, mixer 4Y~4K, transfer belt 60, fixation unit 20 and discharge tray 8.
Image forming apparatus 200 includes control unit 801, display unit 800, input unit 802, memory 803, (hard disk drives HDD
Dynamic device) 804 and communication interface 807.
Control unit 801 is CPU (Central Processing Unit, central processing unit), executes memory 803
The program of storage carries out the various processing of image forming apparatus 200.
HDD 804 saves the image data etc. read by image forming part Q.
Display unit 800 shows the set information of image forming apparatus 200, action state, log information and towards user
Notice.Display unit 800 is touch panel, doubles as input unit, receives the input of user.
Input unit 802 includes button, receives the input of user.
Communication interface 807 is the interface connecting with external device (ED).Communication interface 807 passes through wireless or wired and external dress
It is received between setting and sends data.
Hereinafter, by each of process and the image forming part Q of the duplicating processing duplicated to the original copy on original copy pallet Rt
The function of element is illustrated together.
Control unit 801 is read on original copy pallet Rt by auto document feeder 9 using scanning optics 10
Original copy.
Control unit 801 picks up sheet material using pick-up roller 51~54 from box, and sheet material is supplied into transport path.Control unit
801 are conveyed sheet material towards conveying direction downstream by multiple rollers, and sheet material is delivered to secondary transfer position U.
Image data of the control unit 801 based on the image reading unit R original copy read, using laser optical system 30 photosensitive
Electrostatic latent image is formed on drum 2Y, 2M, 2C, 2K.
The laser that laser optical system 30 is emitted using the polygonal mirror in 8 faces come reflective semiconductor laser diode, utilizes lens
To correct laser.Laser optical system 30 using polygonal mirror come reflection laser, thus by laser to the road of each color Y, M, C, K
Line guidance.Laser optical system 30 using reflecting mirror by laser to photosensitive drums 2Y, 2M, 2C, 2K guide, to photosensitive drums 2Y~2K into
Row exposure.The inclination of each reflecting mirror can be adjusted by pitching motor.
Toner cartridge 1Y~1K accommodate respectively yellow (Y), magenta (M), cyan (C), black (K) toner.Tone
The toner of Y, M, C, K are supplied the developing cell of each color Y, M, C, K by agent box 1Y~1K.Y, the developing cell of M, C, K point
Do not have the developer roll 3Y~3K and mixer 4Y~4K of Y, M, C, K.The developing cell of Y has developer roll 3Y and mixing
Device 4Y.M, the developing cell of C, K are also identical.
The toner that developer roll 3Y~3K stirs mixer 4Y~4K supplies photosensitive drums 2Y~2K.3Y~3K pairs of developer roll
Electrostatic latent image on photosensitive drums 2Y~2K develops, and assorted image is formed on photosensitive drums 2Y~2K.
Control unit 801 is in transfer belt 60 according to the colors on sequence overlapping transfer photosensitive drums 2Y~2K of Y, M, C, K
Image forms a width color image in transfer belt 60.Transfer belt 60 is annular in shape.Control unit 801 rotates transfer belt 60, will turn
The image on band 60 is printed to transfer at secondary transfer position U to sheet material.
Sheet material is delivered to fixation unit 20 by control unit 801, is heated the image on fixation unit 20 and is made its fixing in piece
Material.Sheet material is delivered to discharge tray 8 by control unit 801, and sheet material is discharged in discharge tray 8.
Image forming apparatus 200 includes first sensor 41, second sensor 42.Hereinafter, by the outer peripheral surface of transfer belt 60
It is recorded as belt surface.The direction of rotation of first sensor 41, second sensor 42 and belt surface (for counterclockwise in Fig. 1)
On photosensitive drums 2K it is opposed with the region between secondary transfer position U.
Fig. 2 is the figure for indicating the positional relationship of first sensor 41, second sensor 42 and test pattern.It is formed in image
In device 200, the main scanning direction orthogonal with the moving direction of belt surface 61 (left direction of Fig. 2) (up and down direction of Fig. 2:
The width direction of transfer belt 60) on, maximum image formation width is A3-Wide width (331mm).In transfer belt 60, master is swept
The region for retouching the center in direction is the first area A1 to form the image transferred to sheet material.First area A1 is A3 width
(297mm).On the main scanning direction of belt surface 61, the inside of maximum image formation width and be image forming area A1
The region in two outsides is the second area A2 to form position adjustment pattern 72Y, 72M, 72C, 72K (test pattern) of wedge type.
Second sensor 42 has photodiode etc., and in a pair.Second sensor 42 detects second area A2 respectively
The position of the line segment of interior position adjustment pattern 72Y, 72M, 72C, 72K, shape.
In the A1 of first area, concentration adjust pattern 71Y, 71M, 71C, 71K (test pattern) along main scanning direction across
It is spaced and is formed as a column.There are four the tools of first sensor 41, and is in and adjusts pattern 71Y, 71M, 71C, 71K shape with each concentration
At the corresponding position in position.Concentration adjustment pattern 71Y, 71M, 71C, 71K are spots made of being smeared as each color Y, M, C, K
Block.Concentration adjustment pattern 71Y, 71M, 71C, 71K can also be as by patch and passing through made of each color Y, M, C, K smearing
The halftoning patch that the site of defined pattern is constituted is constituted.
First sensor 41 has photodiode etc., is reflection-type.Each first sensor 41 adjusts pattern to concentration
The area illumination light that 71Y, 71M, 71C, 71K are formed, output and the reflected light from concentration adjustment pattern 71Y, 71M, 71C, 71K
Measure corresponding voltage.Reflection light quantity is corresponding with the concentration adjustment toner adhesion amount of pattern 71Y, 71M, 71C, 71K.Control unit
801 output voltages based on first sensor 41 and calculate concentration adjustment pattern 71Y, 71M, 71C, 71K concentration (gray value).
Hereinafter, referring to Fig. 3 flow chart and position adjustment process is illustrated.
Control unit 801 for example preheat when (when starting), reach duplicate regulation number of pages when, receive operation (job) to
The accumulated time of machine (Ready) mode carries out position adjustment process when reaching the stipulated time.
Control unit 801 is when the execution condition of position adjustment process is satisfied, along subscan in each second area A2
Direction forming position adjusts pattern 72Y, 72M, 72C, 72K (step 1).Position adjustment pattern 72Y, 72M, 72C, 72K make Y, M,
C, the pattern of this 4 color of K becomes one group.Position adjusts pattern 72Y, 72M, 72C, 72K for example corresponding with a width printed data
It is one group of self-forming for example each in each second area A2 in region.
In the case that position adjustment pattern 72Y, 72M, 72C, 72K are formed in the image for being only for forming A3-Wide width
Second area A2.Control unit 801, can be in its two sides while the image for being needed on sheet material is formed in first area A1
Second area A2 in forming position adjust pattern 72Y, 72M, 72C, 72K.Thus, control unit 801 can be formed not executing
In the case where the presswork of the image of sufficient A3-Wide, position adjustment process is carried out in the execution of presswork.
Control unit 801 detects position adjustment pattern 72Y, 72M, 72C, 72K (step 2) by second sensor 42.
In the concentration of position adjustment pattern 72Y, 72M, 72C, 72K, enough and control unit 801 detects position and adjusts pattern
Under the case where 72Y, 72M, 72C, 72K (step 3: yes), control unit 801 is based on position adjustment pattern 72Y, 72M, 72C, 72K
Testing result corrects the position deviation (step 4) of the image of each color Y, M, C, K.
The calculating position in each second area A2 of control unit 801 adjusts the flat of the offset of pattern 72Y, 72M, 72C, 72K
Mean value.In the case where present embodiment, in each second area A2, the offset of the position adjustment pattern 72Y in two groups is calculated
Average value.Also it is identical for other positions adjust pattern 72M, 72C, 72K.
Control unit 801 adjusts pattern 72Y, 72M, 72C, 72K in the inclined situation of benchmark in such as position, laser optics
The driving for being tilted through pitching motor of the mirror of system 30 adjusts.
Control unit 801 such as position adjust pattern 72Y, 72M, 72C, 72K to sub-scanning direction deviate in the case where, with
Deviate the output opportunity (timing) for the laser that is correspondingly staggered.
The case where the concentration of position adjustment pattern 72Y, 72M, 72C, 72K are lower than threshold value or second sensor 42 is sent out
In the case where raw failure, control unit 801 does not detect that position adjusts pattern 72Y, 72M, 72C, 72K.Control unit 801 is not having
It detects in the case where position adjustment any one of pattern 72Y, 72M, 72C, 72K (step 3: no), by what is do not detected
Color Y, M, C, K of position adjustment pattern 72Y, 72M, 72C, 72K are stored in 803 (step 5) of memory.
At this point, control unit 801 maintain do not make image forming apparatus 200 operating stopping and be able to carry out the receiving of operation with
And the Ready state (state for receiving the instruction of image formation) executed.
Control unit 801 is under situation connected to the network (step 6: yes) to preset sending object notice exception
Generate (step 7).As sending object, can be the server for carrying out the company of maintenance management of image forming apparatus 200 or
Person carries out the address of the maintenance person of the maintenance management of image forming apparatus 200.Content of announcement for example indicates by error code, can be with
It indicates to generate in position adjustment process abnormal or indicates that the position not detected adjusts pattern 72Y, 72M, 72C, 72K
Color Y, M, C, K.
Fig. 4 is the figure for the display picture for indicating abnormal when generating.
Control unit 801 is after step 7 and under no situation connected to the network (step 6: no), in display unit 800
In, abnormal generation (step 8) is shown in a manner of keeping user elusive.For example, control unit 801 can in display unit 800
So as to indicate the label flashing of Fig. 4 of abnormal generation, can also show abnormal for indicating to generate in position adjustment process
Deng error code.
Hereinafter, the flow chart referring to Fig. 5 is illustrated concentration adjustment processing.
Control unit 801 for example preheat when, reach duplicate regulation number of pages when, Ready mode accumulated time reach rule
Concentration adjustment processing is carried out when fixing time.Control unit 801 is when the execution condition of concentration adjustment processing is satisfied, in first area
Concentration, which is formed, along main scanning direction in A1 adjusts pattern 71Y, 71M, 71C, 71K (step 11).
Control unit 801 adjusts pattern 71Y, 71M, 71C, 71K (step 12) by first sensor 41 come detectable concentration.
In concentration 801 detectable concentration of the control unit adjustment pattern enough of concentration adjustment pattern 71Y, 71M, 71C, 71K
Under the case where 71Y, 71M, 71C, 71K (step 13: yes), control unit 801 detects each concentration adjustment pattern 71Y, 71M, 71C, 71K
Multiple points concentration, and calculate the average value of detected value.In the concentration and target of concentration adjustment pattern 71Y, 71M, 71C, 71K
Value difference be under the situation outside prescribed limit (step 14: no), control unit 801 be based on concentration adjust pattern 71Y, 71M, 71C,
The testing result of 71K and (step 15) is modified to the concentration deviation of the image of multiple color Y, M, C, K.
Control unit 801 in a manner of making the image color of each color Y, M, C, K converge on prescribed limit, adjustment amount of laser light,
To photosensitive drums 2Y~2K apply developing bias (developing bias change when, adhesion amount of the toner relative to photosensitive drums 2Y~2K
Changed), correct image color.
Control unit 801 executes the processing of step 11~step 14 again, in concentration adjustment pattern 71Y, 71M, 71C, 71K
The difference of concentration and target value converges under the situation in prescribed limit (step 14: yes), terminates concentration adjustment processing.
The case where the concentration of concentration adjustment pattern 71Y, 71M, 71C, 71K are lower than threshold value and first sensor 41 is sent out
In the case where raw failure, control unit 801 does not detect that concentration adjusts pattern 71Y, 71M, 71C, 71K.Control unit 801 is not having
Under detecting the case where concentration adjusts any one of pattern 71Y, 71M, 71C, 71K (step 13: no), adjust with position
The identical processing of step 5~step 8 in processing.
That is, control unit 801 does not make the operating of image forming apparatus 200 stop and maintain Ready state.
Color Y, M, C, K of the concentration not detected adjustment pattern 71Y, 71M, 71C, 71K are stored in by control unit 801
803 (step 16) of memory.
Control unit 801 notifies under situation connected to the network (step 17: yes) to preset sending object abnormal
Generation (step 18).Control unit 801 is shown as making to indicate label flashing of abnormal generation etc. on display unit 800, uses
Family understands abnormal generation (step 19).
(second embodiment)
In the first embodiment, do not detect that position adjusts in position adjustment process and when concentration adjustment processing
In the case where any one of pattern 72Y, 72M, 72C, 72K and concentration adjustment pattern 71Y, 71M, 71C, 71K, control unit
801 show abnormal generation on display unit 800.
In this second embodiment, control unit 801 is not shown on display unit 800 abnormal in aftermentioned mode standard
It generates.
The control model of image forming apparatus 200 has mode standard and service mode.
Mode standard is that the mode for the operations such as image is formed is carried out for the operation based on user.First embodiment pair
The processing of image forming apparatus 200 under mode standard is illustrated.
Service mode be with it is defined operation or input in the case where from mode standard switch mode, be dimension
The mode for carrying out maintenance management such as shield person.
Control unit 801 in position adjustment process and concentration adjustment processing when do not detect position adjustment pattern 72Y,
In the case that 72M, 72C, 72K and concentration adjust pattern 71Y, 71M, 71C, 71K, the operating of image forming apparatus 200 is not made
Stop and maintains Ready state.
Maintenance person is when being notified abnormal generation from image forming apparatus 200 or being connected to contact from user, as image
It forms the maintenance management of device 200 and defined operation or input is carried out to image forming apparatus 200.Then, image is formed
Device 200 is switched to service mode from mode standard.In this case, abnormal generation is shown in display by control unit 801
Portion 800.
Control unit 801 shows such as error code on display unit 800.Error code is indicated in position adjustment process, dense
Position adjustment pattern 72Y, 72M, 72C, 72K and concentration that abnormal or expression does not detect are generated in degree adjustment processing
Adjust color Y, M, C, K of pattern 71Y, 71M, 71C, 71K.
According to first embodiment, second embodiment, even if in position adjustment process and when concentration adjustment processing
In the case where generating exception, control unit 801 can not also make the operating of image forming apparatus 200 stop and maintain Ready state.
For this purpose, in first embodiment, second embodiment, even if generating the dense of abnormal color Y, M, C, K ingredient
Degree reduces, and also can form image using image forming apparatus 200, for the user for wanting formation image at once is equal,
It can be improved the convenience of image forming apparatus 200.
(variation)
In first embodiment, second embodiment, control unit 801 is in position adjustment process and at concentration adjustment
It is not detected when reason in position adjustment pattern 72Y, 72M, 72C, 72K and concentration adjustment pattern 71Y, 71M, 71C, 71K
In the case where any one, abnormal generation is shown in display unit 800.
However, control unit 801 can also not detect position adjustment pattern 72Y, 72M, 72C, 72K and concentration tune
In the case where any one of whole pattern 71Y, 71M, 71C, 71K, be repeatedly formed again position adjustment pattern 72Y, 72M, 72C,
72K or concentration adjustment pattern 71Y, 71M, 71C, 71K simultaneously detects step 1~step 3 of the pattern, step 11~step 13.
Then, control unit 801 still can not detect position adjustment pattern 72Y, 72M, 72C, 72K and concentration
In the case where adjusting any one of pattern 71Y, 71M, 71C, 71K, abnormal generation is shown in display unit 800.Alternatively, control
Abnormal generation can also be shown in display unit 800 in the case where being switched to service mode from mode standard by portion 801 processed.
First sensor 41 can also be only one, can use a sensor come detectable concentration adjustment pattern 71Y,
71M、71C、71K。
First embodiment of the invention, second embodiment are all to illustrate.The range of invention not by first embodiment,
Second embodiment limits.The present invention can be carried out real by the various forms other than first embodiment, second embodiment
It applies.First embodiment, second embodiment can carry out without departing from the spirit of the invention it is various omit, displacement,
Change.The deformation of first embodiment, second embodiment or first embodiment, second embodiment is contained in invention
Purport.First embodiment, second embodiment are contained in invention and claims documented by claims and are remembered
The impartial range of the invention of load.
Claims (8)
1. a kind of image forming apparatus characterized by comprising
The image being formed on belt surface is transferred on sheet material by transfer belt；
Image forming part forms test pattern on the belt surface when image quality maintains to handle；
Sensor detects the test pattern；
Show the display unit of picture；And
Control unit maintains the instruction for receiving image formation in the case where the test pattern is not detected in the sensor
State,
In the control unit, as described image formed device control model and including the standard for carrying out image formation
Mode and service mode for carrying out maintenance management, in the case where the test pattern is not detected in the sensor and
In the case where the mode standard, abnormal generation is not made to be shown in the display unit, is not detected in the sensor
In the case where the test pattern and in the case where being in the service mode, abnormal generation is shown in the display unit.
2. image forming apparatus according to claim 1, which is characterized in that
The control unit flashes the label for indicating to generate extremely.
3. image forming apparatus according to claim 1, which is characterized in that
The control unit is in the case where the test pattern is not detected in the sensor, by the test after increase concentration
Pattern is formed in again on the belt surface, will in the case where the sensor can not detect the test pattern again
Abnormal generation is shown in the display unit.
4. image forming apparatus according to claim 1, which is characterized in that
On the belt surface, on the main scanning direction orthogonal with the moving direction of the belt surface, central region is shape
At the first area of the image of oriented sheet material transfer, the region in two outsides of the first area is the institute for being formed with multiple colors
The second area of test pattern is stated,
Described image forming portion is when it is the position adjustment process of image that the image quality of progress, which maintains processing, based on each described the
The testing result of each color of the test pattern formed in two regions corrects the position of each image of the multiple color.
5. image forming apparatus according to claim 4, which is characterized in that
It includes memory that described image, which forms device,
The color of the undetected test pattern of the sensor is stored in the memory by the control unit.
6. image forming apparatus according to claim 5, which is characterized in that
Described image forming portion is when the image quality of progress maintains the concentration that processing is image to adjust processing, based in the belt surface
The testing result of each color of the test pattern of multiple colors of upper formation, corrects the dense of the image of the multiple color
Degree.
7. image forming apparatus according to claim 6, which is characterized in that
The test pattern of undetected color is stored in the memory by the control unit.
8. image forming apparatus according to any one of claim 1 to 7, which is characterized in that
It includes the communication interface with PERCOM peripheral communication that described image, which forms device,
The control unit is logical to preset sending object in the case where the test pattern is not detected in the sensor
Know abnormal generation.
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| CN201510857601.9A CN106814561B (en) | 2015-11-30 | 2015-11-30 | Image forming apparatus |
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| CN201510857601.9A CN106814561B (en) | 2015-11-30 | 2015-11-30 | Image forming apparatus |
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| CN106814561B true CN106814561B (en) | 2019-11-05 |
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| US10241436B1 (en) * | 2017-09-22 | 2019-03-26 | Kabushiki Kaisha Toshiba | Image forming apparatus and laser light detecting method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165609A (en) * | 2006-10-18 | 2008-04-23 | 夏普株式会社 | Image forming device |
| CN103019067A (en) * | 2011-09-26 | 2013-04-03 | 富士施乐株式会社 | Image forming apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005003830A (en) * | 2003-06-11 | 2005-01-06 | Minolta Co Ltd | Image forming device |
| JP2008191495A (en) * | 2007-02-06 | 2008-08-21 | Canon Inc | Image forming apparatus |
| JP2009298106A (en) * | 2008-06-17 | 2009-12-24 | Konica Minolta Business Technologies Inc | Image forming apparatus and ticket management system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165609A (en) * | 2006-10-18 | 2008-04-23 | 夏普株式会社 | Image forming device |
| CN103019067A (en) * | 2011-09-26 | 2013-04-03 | 富士施乐株式会社 | Image forming apparatus |
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