CN105573078B - Image forming apparatus and image formation system - Google Patents
Image forming apparatus and image formation system Download PDFInfo
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- CN105573078B CN105573078B CN201510717457.9A CN201510717457A CN105573078B CN 105573078 B CN105573078 B CN 105573078B CN 201510717457 A CN201510717457 A CN 201510717457A CN 105573078 B CN105573078 B CN 105573078B
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- 230000015572 biosynthetic process Effects 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 121
- 238000001514 detection method Methods 0.000 claims abstract description 102
- 238000007639 printing Methods 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 abstract description 10
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000004898 kneading Methods 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 description 53
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000003825 pressing Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 8
- 108091008695 photoreceptors Proteins 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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)
- Fixing For Electrophotography (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Abstract
Image forming apparatus and image formation system.Be configured to that pressure roller is manually carried out contact separation movement to fixing roller, eliminate cleaning caused by elevated temperature excursions occur when the plus-pressure applied to fixing kneading portion is set as variable or occur thus it is bad etc. caused by picture noise the problems such as.A rotary part in fixing device is configured to, relative to another rotary part, contact separation movement can be manually carried out on the thickness direction of the recording materials by being fixed kneading portion.Have：Operation display part carries out the receiving of display and the operation of various information；Detection part is detected the position of a rotary part；And control unit, differentiate that the detection information of detection part is appropriate for about the recording materials information of the recording materials in recording materials receiving portion and from the input information of operation display part.Control unit forbids the printing to recording materials in the case where the detection information of detection part is not suitable for recording materials information or input information.
Description
Technical Field
The present invention relates to an image forming apparatus including a fixing device for fixing a toner image on a recording material, and an image forming system including the image forming apparatus. Image forming apparatuses include various apparatuses such as copiers, printers, facsimiles, and multifunction machines having these functions in a combined manner.
Background
Conventionally, an image forming apparatus employing an electrophotographic method includes: the fixing device conveys the recording material to which the unfixed toner image is transferred to a fixing nip portion between a fixing roller heated by a heat source and a pressure roller in pressure contact therewith, and heats and pressurizes the recording material to fix the toner image on the recording material. In recent years, with the spread and expansion of image forming apparatuses, the types of recording materials (so-called paper types) used for printing have become diversified. In order to maintain image quality regardless of the type of recording material, it is necessary to set a fixing condition corresponding to the type of recording material in the fixing device, for example.
For example, patent document 1 discloses a configuration in which a pressure roller can be manually moved into contact with and away from a fixing roller to reduce the cost, and the pressure applied to a fixing nip portion can be varied. When printing an envelope, the pressure is reduced compared with printing plain paper, and wrinkles on the envelope are prevented from occurring. In the case of printing plain paper in a pressurized state at the time of envelope printing (in the case of printing on a recording material unsuitable for the pressurized state), the rotation speed of both rollers is reduced, but printing itself is still being performed.
Documents of the prior art
[ patent document 1] (Japanese patent application laid-open No. 5165972)
However, in the configuration of patent document 1, since it is possible to print plain paper, which is an unsuitable recording material, in a pressurized state at the time of envelope printing, there is a problem as follows: high-temperature offset occurs, or image noise due to poor cleaning or the like occurs.
Disclosure of Invention
The technical problem of the present invention is to provide an image forming apparatus and an image forming system, which are improved by discussing the above-mentioned current situation.
The invention according to claim 1 is an image forming apparatus including: a sheet feeding device that feeds out and conveys the recording materials in the recording material accommodating portion one by one; and a fixing device for fixing a toner image on a recording material by passing the recording material through a fixing nip portion between a pair of rotating members, wherein one of the rotating members is configured to be manually movable in contact with and separated from the other rotating member in a thickness direction of the recording material passing through the fixing nip portion, the image forming apparatus including: an operation display unit for displaying various information and receiving an operation; a detection member that detects a position of the one rotating member; and a control unit that determines whether or not the detection information of the detection member is suitable for recording material information related to the recording material in the recording material storage unit and input information from the operation display unit, and prohibits printing on the recording material when the detection information of the detection member is not suitable for the recording material information or the input information.
The invention according to claim 2 is the image forming apparatus according to claim 1, wherein, when the detection information of the detection member does not fit the recording material information or the input information, the control unit displays the fitting information indicating that the detection information does not fit the recording material information or the input information on the operation display unit, and invalidates the print instruction operation on the operation display unit.
An invention according to claim 3 is the image forming apparatus according to claim 1, wherein when the detection information of the detection means is suitable for both the recording material information and the input information, the control unit displays suitable information indicating that suitable information on the detection means on the operation display unit and allows the printing instruction operation on the operation display unit.
The invention according to claim 4 is the image forming apparatus according to claim 1, wherein, when the detection information of the detection member is intermediate information, the control unit displays unsuitable information indicating the intermediate information on the operation display unit and invalidates the print instruction operation on the operation display unit.
The invention according to claim 5 is the image forming apparatus according to claim 1, wherein when the detection information of the detection means is suitable for both the recording material information and the input information, the control unit changes the printing condition on the recording material based on the detection information of the detection means and the recording material information.
The invention according to claim 6 is the image forming apparatus according to claim 5, wherein the printing condition is a set temperature of a heating body that heats the other rotating member.
The invention according to claim 7 is the image forming apparatus according to claim 5, wherein the printing condition is an amount of toner adhering to a unit area of the recording material.
The invention according to claim 8 is an image forming apparatus including: a sheet feeding device that feeds out and conveys the recording materials in the recording material accommodating portion one by one; and a fixing device that fixes a toner image on a recording material by passing the recording material through a fixing nip portion between a pair of rotating members, the image forming apparatus being communicably connected to an external terminal via a network and being remotely operable by an operation display portion of the external terminal, wherein one of the rotating members is configured to be manually movable in contact with and separated from the other rotating member in a thickness direction of the recording material passing through the fixing nip portion, the image forming apparatus including: a detection member that detects a position of the one rotating member; and a control unit that determines whether or not the detection information of the detection member is suitable for recording material information related to the recording material in the recording material storage unit and input information from the operation display unit of the external terminal, wherein the control unit prohibits printing of the recording material when the detection information of the detection member is not suitable for the recording material information or the input information.
The invention according to claim 9 is the image forming apparatus according to claim 8, wherein, when the detection information of the detection means does not fit the recording material information or the input information, the control portion displays the unsuitable information indicating that the detection information does not fit the recording material information or the input information on the operation display portion of the external terminal, and invalidates the print instruction operation on the operation display portion of the external terminal.
The invention according to claim 10 is the image forming apparatus according to claim 8, wherein when the detection information of the detection means is suitable for both the recording material information and the input information, the control unit displays suitable information indicating that on the operation display unit of the external terminal, and allows a print instruction operation on the operation display unit of the external terminal.
The invention according to claim 11 is the image forming apparatus according to claim 8, wherein, when the detection information of the detection member is intermediate information, the control unit displays unsuitable information indicating that the detection information is intermediate information on the operation display unit of the external terminal, and invalidates a print instruction operation on the operation display unit of the external terminal.
The invention according to claim 12 is an image forming system in which the image forming apparatus according to claim 1 is communicably connected to another image forming apparatus via a network, wherein, in a case where the detection information of the detecting means is not appropriate for the recording material information or the input information, the control unit determines whether or not the detection information of the detection means on the other image forming apparatus side is suitable for both the recording material information on the other image forming apparatus side and the input information from the operation display unit on the image forming apparatus side, when the image forming apparatus is suitable, the control unit displays suitable information indicating that the image forming apparatus is suitable on the operation display unit, and allows a print instruction operation from the operation display portion on the image forming apparatus side to the other image forming apparatus.
The invention according to claim 13 is an image forming system in which the image forming apparatus according to claim 8 is communicably connected to another image forming apparatus via a network, wherein the control section, in a case where the detection information of the detection member is not suitable for the recording material information or the input information, the control unit determines whether or not the detection information of the detection means of the other image forming apparatus is suitable for both the recording material information of the other image forming apparatus and the input information from the operation display unit of the external terminal, when the terminal is suitable, the control unit displays suitable information indicating that the terminal is suitable on the operation display unit of the external terminal, and allows a print instruction operation from the operation display section of the external terminal to the other image forming apparatus.
According to the invention of the present application, if the pressing force applied to the fixing nip is not suitable for the recording material, printing cannot be performed at all, and therefore, occurrence of erroneous printing can be reliably prevented. Further, it is possible to suppress the occurrence of high-temperature offset and the occurrence of image noise due to cleaning failure or the like caused thereby.
Drawings
Fig. 1 is a schematic explanatory view of a printer.
Fig. 2 is a side sectional view of the fixing device.
Fig. 3 is a schematic perspective view of the fixing device.
Fig. 4 is a graph showing a relationship between the pressing state and the corresponding paper type.
Fig. 5 is a functional block diagram of a controller.
Fig. 6 is a flowchart of the pressurized state determination control according to embodiment 1.
Fig. 7 is an explanatory view of the operation panel before the paper feed cassette is set.
Fig. 8(a) to 8(c) are explanatory views of the operation panel showing the size indicator and the paper type indicator.
Fig. 9(a) to 9(c) are explanatory views of the operation panel in the case where the detection information and the paper type information are appropriate.
Fig. 10(a) to 10(c) are explanatory views of the operation panel in the case where the operation panel does not match the print command.
Fig. 11(a) to 11(c) are explanatory views of the operation panel in the case where the print command is matched.
Fig. 12 is a graph showing the relationship between the paper type information, the processing speed, and the set temperature of the heating body.
Fig. 13 is a functional block diagram of the controller of embodiment 2.
Fig. 14 is a flowchart of the pressurized state determination control according to embodiment 2.
Fig. 15 is a graph showing the relationship between the paper type information, the processing speed, and the set temperature of the heating body.
Fig. 16 is an explanatory diagram showing a configuration example of the image forming system according to embodiment 3.
Fig. 17 is a flowchart of the pressurized state determination control according to embodiment 3.
Fig. 18 is a flowchart of the pressurized state determination control according to embodiment 4.
Description of the reference symbols
P recording material
1 Printer (image forming apparatus)
5 fixing device
28 control part
50 controller
57 operating panel
58 paper feed sensor
59 paper feeding width detecting sensor
60 paper thickness sensor
61-roller position sensor
70 external terminal
100 other printers (other image forming apparatuses)
Detailed Description
Hereinafter, an embodiment of the present invention will be described with reference to the drawings in a case where the present invention is applied to a tandem color digital printer (hereinafter, referred to as a printer) as an example of an image forming apparatus. In the following description, when a term indicating a specific direction or position (for example, "left and right", "up and down", etc.) is used as necessary, reference is made to a front view in a direction perpendicular to the paper surface in fig. 1. These terms are used for convenience of description and are not intended to limit the technical scope of the invention of the present application.
(1) Outline of printer
First, an outline of the printer 1 will be described with reference to fig. 1. As shown in fig. 1, the printer 1 includes, in its housing 2: a transfer device 3 (may also be referred to as an image processing device), a paper feeding device 4, a fixing device 5, and the like. The printer 1 is configured to be connected to a network such as a LAN, for example, and when receiving a print command from an operation panel 57 (see fig. 5) or an external terminal 70 (see fig. 16) serving as an operation display unit, performs printing based on the command. The printer 1 is a so-called A3 supporting apparatus, and in the paper feeding device 4, a recording material P of a maximum A3 size can be accommodated in a posture of being fed in the longitudinal direction of entering the transfer device 3 from the short side. At this time, the long side dimension (the transport direction dimension) of the recording material P having a length of a3 was 420mm, and the short side dimension (the width dimension) was 297 mm.
The sheet feeding device 4 located at the lower portion in the housing 2 includes: a paper feed cassette 21 as a recording material accommodating portion for accommodating a recording material P; a paper feed roller 22 that rolls out the recording material P in the paper feed cassette 21 from the uppermost layer; a separation roller 23 that separates the fed-out recording materials P one by one; and a pair of timing rollers 24 that convey the recording material P separated into one sheet to the transfer device 3 at a predetermined timing. The paper feed cassette 21 is detachably disposed at a lower portion of the housing 2. The recording materials P in the paper feed cassette 21 are fed out one by one from the uppermost recording material P to the conveyance path 30 by the rotation of the paper feed roller 22 and the separation roller 23. The conveyance path 30 extends from the paper feed cassette 21 of the paper feed device 4 to the paper discharge tray 27 on the upper surface of the housing 2 via the nip portion of the pair of timing rollers 24, the secondary transfer nip portion 11 of the transfer device 3, the fixing nip portion 35 of the fixing device 5, and the pair of discharge rollers 26 positioned on the upper portion of the housing 2.
The recording material P in the paper feed cassette 21 is set to be conveyed toward the conveyance path 30 in the conveyance direction S with reference to the center of the paper width (width orthogonal to the conveyance direction S). The paper feed cassette 21 includes: the pair of side regulating plates 25 are configured to laterally position the recording material P before being fed to the center reference. The pair of side regulating plates 25 are configured to move in the paper feed width direction (the direction orthogonal to the conveyance direction S) in a distance direction in conjunction with each other. The recording material P in the paper feed cassette 21 is sandwiched from both sides in the paper feed width direction by the pair of side regulating plates 25, and the recording material P in the paper feed cassette 21 is set to the center reference regardless of the specification. Therefore, the transfer process in the transfer device 3 and the fixing process in the fixing device 5 are also performed on a central basis.
In the paper feed cassette 21, disposed are: a paper feed sensor 58 (see fig. 5) for detecting the presence or absence of the recording medium P inside. Further, in at least one side restriction plate 25, mounted are: a paper width detection sensor 59 for detecting the position thereof. The paper width of the recording material P is detected based on the detection information of the paper width detection sensor 59, that is, the positional information of the side regulating plate 25. A paper thickness sensor 60 for detecting the thickness of the recording material P nipped by the paper feed roller 22 and the separation roller 23 is disposed at a position facing the paper feed roller 22. The paper thickness sensor 60 is configured to detect the thickness of the recording material P based on the displacement amount of the paper feed roller 22 before and after nipping of the recording material P.
The transfer device 3 located above the sheet feeding device 4 performs the following functions: a toner image formed on a photosensitive drum 13 as an example of an image carrier is transferred onto the recording material P. The transfer device 3 includes: an intermediate transfer belt 6, a total of 4 image forming portions 7 corresponding to each of yellow (Y), magenta (M), cyan (C), and black (K), and the like.
The intermediate transfer belt 6 is an endless transfer belt made of a conductive material. The intermediate transfer belt 6 is wound around a driving roller 8 located on the right side of the central portion in the housing 2 and a driven roller 9 located on the left side of the central portion in the housing 2. The driving roller 8 is rotated counterclockwise in fig. 1 by a main motor (not shown), and the intermediate transfer belt 6 is rotated counterclockwise in fig. 1. A secondary transfer roller 10 is disposed on the outer peripheral side of the portion of the intermediate transfer belt 6 wound around the drive roller 8. The secondary transfer roller 10 is in contact with the intermediate transfer belt 6, and a secondary transfer nip 11, which is a secondary transfer region, is formed between the intermediate transfer belt 6 and the secondary transfer roller 10(a contact portion). The secondary transfer roller 10 rotates in the clockwise direction in fig. 1 in accordance with the rotation of the intermediate transfer belt 6 or the movement of the recording material P conveyed while being nipped by the secondary transfer nip 11. On the outer peripheral side of the portion of the intermediate transfer belt 6 wound around the driven roller 9, there are disposed: a transfer belt cleaning portion 12 for removing the untransferred toner on the intermediate transfer belt 6. The transfer belt cleaning portion 12 abuts against the intermediate transfer belt 6.
Below the intermediate transfer belt 6, 4 image forming portions 7 are arranged in the order of yellow (Y), magenta (M), cyan (C), and black (K) along the intermediate transfer belt 6 from the left in fig. 1. In fig. 1, for convenience of explanation, reference numeral Y, M, C, K is added to each image forming unit 7 in accordance with the reproduction color. Each image forming section 7 includes: a photosensitive drum 13 rotating in the clockwise direction in fig. 1. Around the photosensitive drum 13, arranged in order along the clockwise rotation direction in fig. 1 are: a charging device 14, a developing device 15, a primary transfer roller 16, and a photoreceptor cleaning section 17.
The photosensitive drum 13 is a negatively chargeable photosensitive drum, and is configured to be rotationally driven clockwise in fig. 1 by a main motor (not shown). The charger 14 is of a roller charging type for uniformly charging the surface of the photosensitive drum 13. The charger 14 is supplied with a voltage for charging the photoreceptor from a charging power supply (not shown) at a predetermined timing. The developing device 15 visualizes the electrostatic latent image formed on the photosensitive drum 13 by reverse development using toner exhibiting a negative polarity.
The primary transfer roller 16 is located on the inner peripheral side of the intermediate transfer belt 6 and faces the photoreceptor drum 13 of the corresponding image forming unit 7 with the intermediate transfer belt 6 interposed therebetween. The primary transfer roller 16 also rotates counterclockwise in fig. 1 with the rotation of the intermediate transfer belt 6. A primary transfer nip 18 as a primary transfer region is formed between the intermediate transfer belt 6 and the primary transfer roller 16 (an abutting portion). The photoreceptor cleaning section 17 is for removing the untransferred toner remaining on the photoreceptor drum 13, and is in contact with the photoreceptor drum 13. An exposure device 19 is disposed below the 4 image forming units 7. The exposure device 19 forms an electrostatic latent image on each photosensitive drum 13 with laser light based on image information from an external terminal or the like. Above the intermediate transfer belt 6 are disposed: a hopper 20 for accommodating the toner supplied to each developing device 15. Note that, in fig. 1, reference numeral Y, M, C, K is added to each hopper 20 for convenience according to the reproduction color.
In each image forming unit 7, when the photosensitive drum 13 charged by the charging device 14 is irradiated with laser light corresponding to an image signal from the exposure device 19, an electrostatic latent image is formed. The electrostatic latent image is formed into a toner image of each color by reverse development with toner supplied from the developing device 15. The toner images on the photosensitive drums 13 are primarily transferred from the photosensitive drums 13 in the order of yellow, magenta, cyan, and black in the corresponding primary transfer nip portions 18, and are superimposed on the outer peripheral surface of the intermediate transfer belt 6. The untransferred toner remaining on the photosensitive drum 13 is scraped off from the photosensitive drum 13 by the photosensitive body cleaning portion 17. Then, when the recording material P passes through the secondary transfer nip portion 11, the superimposed 4-color toner image is secondarily transferred onto the recording material P at one time. The untransferred toner remaining on the intermediate transfer belt 6 is scraped off from the intermediate transfer belt 6 by a transfer belt cleaning portion 12.
The fixing device 5 located above the secondary transfer roller 10 includes: a fixing roller 31, a heat roller 32, and a fixing belt 33 wound around the rollers 31 and 32. A pressure roller 34 is disposed on the outer peripheral side of the portion of the fixing belt 33 wound around the fixing roller 31. The fixing roller 31 and the pressure roller 34 constitute a pair of rotating members.
The pressure roller 34 is in contact with the fixing belt 33, and a fixing nip 35, which is a fixing region, is formed between the fixing belt 33 and the pressure roller 34 (a contact portion). The pressure roller 34 is rotationally driven in the clockwise direction in fig. 1 by a sub-motor (not shown), and the fixing roller 31 rotates in the counterclockwise direction in fig. 1 (rotates in the direction opposite to the rotational direction of the pressure roller 34) together with the fixing belt 33. A heating body 36 such as a halogen lamp for heating the fixing belt 33 is accommodated inside the heat roller 32. The control unit 28 described later controls energization of the heating body 36, and the heating body 36 and the fixing belt 33 are maintained at a temperature necessary for fixing. The recording material P on which the unfixed toner image is carried by the secondary transfer nip portion 11 is heated and pressurized when passing through the fixing nip portion 35, and the toner image is fixed on the recording material P. Thereafter, the recording material P is discharged onto the discharge tray 27 by the rotation of the discharge roller pair 26.
Inside the housing 2 are disposed: a control unit 28 (see fig. 5) that controls all the controls of the printer 1. The control unit 28 incorporates: and a controller 50 (see fig. 5) for executing various arithmetic processing, storage, and control.
(2) Construction of the fixing device
Next, referring to fig. 2 and 3, the detailed structure of the fixing device 5 and its surroundings will be described. As described above, the fixing device 5 includes: a fixing roller 31 and a pressure roller 34 that extend in the sheet width direction and are rotatable in a pressure-contact state with the fixing belt 33 interposed therebetween. A heating roller 32 is disposed on the inner peripheral side of the fixing belt 33 in addition to the fixing roller 31. The fixing roller 31 and the heat roller 32 are each a cylindrical roller long in the paper width direction. Both ends of each of the rollers 31 and 32 in the paper feeding width direction are rotatably supported by a frame in the housing 2. Further, a heating body 36 such as a halogen lamp for heating the fixing belt 33 is accommodated on the inner peripheral side of the heat roller 32. The fixing belt 33 pressed against the pressure roller 34 is a cylindrical fixing belt elongated in the paper width direction, and is held in a cylindrical shape by a tensile force applied by the fixing roller 31 and the heat roller 32 and a self-tension.
The pressure roller 34 is located on the opposite side of the heat roller 32 with the fixing roller 31 interposed therebetween. The pressure roller 34 is in pressure contact with the fixing roller 31 via the fixing belt 33 (the fixing belt 33 is sandwiched between the pressure roller 34 and the fixing roller 31). The pressure roller 34 is configured to be manually movable in contact with and away from the fixing roller 31 and the fixing belt 33 in the thickness direction of the recording material P passing through the fixing nip portion 35. At this time, a kneading adjustment shaft 40 extending parallel to the axes of the rollers 31, 32, and 34 is disposed near the pressure roller 34. Both ends of the kneading adjustment shaft 40 in the paper feeding width direction are rotatably supported by a frame in the housing 2. Shaft support plates 41 for supporting the respective ends of the pressure roller 34 in the paper feeding width direction are fixed to both ends of the kneading adjustment shaft 40 in the paper feeding width direction. The leading end sides of the pair of shaft support plates 41 project in the same direction, and the respective end portions of the pressure roller 34 in the paper feeding width direction are fitted into U-shaped groove portions 41a formed on the leading end sides of the shaft support plates 41. One end of an extension spring 43 is connected to a connecting arm 42 fixed to a longitudinal middle portion of the pinch adjusting shaft 40. The other end portion of the tension spring 43 is connected to a plurality of lock pin portions 44a to 44d (four in the embodiment) provided on a frame in the housing 2 in a replaceable manner.
The pressure roller 34 rotates around the kneading adjustment shaft 40 according to the coupling position of the other end portion of the tension spring 43 to the lock pin portions 44a to 44d, and moves in the direction of contact and separation with respect to the outer peripheral surface of the fixing belt 33. As a result, the pressure roller 34 gradually changes the pressure state of the fixing roller 31 and the fixing belt 33 (four stages of light pressure contact, medium pressure contact, strong pressure contact, and separation state in this case). At least one end of the pressure roller 34 in the paper width direction is disposed at a position facing: a roller position sensor 61 as an example of a detecting member that detects the position of the pressure roller 34. The pressing state of the pressure roller 34 with respect to the fixing roller 31 and the fixing belt 33 is detected based on the detection information of the roller position sensor 61.
As described above, the pressure roller 34 is gradually changed in the pressure state with respect to the fixing roller 31 and the fixing belt 33 by the lock pins 44a to 44d coupled to the other end of the tension spring 43. When the other end portion of the tension spring 43 is coupled to the 1 st lock pin portion 44a, the fixing belt 33 and the pressure roller 34 are separated from each other. When the other end portion of the tension spring 43 is coupled to the 2 nd lock pin portion 44b, the fixing belt 33 and the pressure roller 34 are in a light pressure contact state. The paper suitable for the light pressure bonding state is envelope or ultra-thin paper (such as 40g/m gram weight)2Left and right) (see fig. 4). When the other end of the tension spring 43 is coupled to the 3 rd lock pin portion 44c, the fixing belt 33 and the pressure roller 34 are in a medium-pressure contact state. The type of paper suitable for the medium crimp state is thin paper (e.g. grammage 50 g/m)2Left and right), plain paper, and thick paper (see fig. 4). When the other end portion of the tension spring 43 is coupled to the 4 th lock pin portion 44d, the fixing belt 33 and the pressure roller 34 are in a strong pressure contact state. The type of paper suitable for the strongly pressed state is a three-dimensional copy such as a laminated paper or a braille file (see fig. 4).
(3) The structure of the control section and the pressurized state determination control of embodiment 1
Next, with reference to fig. 5 to 12, the structure of the control unit 28 and the 1 st embodiment of the pressurized state determination control by the control unit 28 will be described. The control section 28 is basically the following components: the image signal transmitted from the operation panel 57, the external terminal 70, or the like is received and converted into digitized image data for Y-K colors, and the transfer device 3, the paper feed device 4, or the like is controlled to perform printing.
As shown in fig. 5, the controller 50 of the control unit 28 includes, in addition to the CPU51 that executes various kinds of arithmetic processing and control: a communication interface (I/F) section 52 for connecting to an external terminal 70 or the like, a storage means 53 such as an EEPROM or a flash memory, a RAM54 for temporarily storing control programs or data, a counter 55 for measuring the number of sheets of recording material P to be conveyed, a timer 56 for measuring time, and the like.
The following components are electrically connected to the controller 50: a heating body 36 such as a halogen lamp for heating the fixing belt 33, an operation panel 57 attached to the outer surface side of the housing 2, a paper feed sensor 58 for detecting the presence or absence of the recording material P in the paper feed cassette 21, a paper feed width detection sensor 59 for detecting the position of the side regulating plate 25, a paper thickness sensor 60 for detecting the thickness of the recording material P held between the paper feed roller 22 and the separation roller 23, a roller position sensor 61 as an example of a detection member for detecting the position of the pressure roller 34, and a temperature sensor 62 for measuring the temperature of the fixing belt 33.
Fig. 6 shows embodiment 1 of the pressurized state determination control by the control unit 28. The algorithm shown in the following flowchart is stored in advance as a program in the storage unit 53 of the controller 50, read out to the RAM54, and executed by the CPU 51. Before the paper feed cassette 21 is set in the housing 2, character data 63 of "please set paper" is displayed on the operation panel 57, the execution button 64 with light of the operation panel 57 is turned on (displayed) to the 1 st color (for example, red), and the printing instruction operation by the execution button 64 with light is invalidated. Fig. 7 illustrates the operation panel 57 and the execution button 64 with a lamp before the paper supply cassette 21 is set.
Note that, although not shown, when the external terminal 70 is communicably connected to the printer 1 and a print instruction is issued from the external terminal 70, character data of "please set paper" is displayed on the screen of the external terminal 70, and an operation instruction mark indicating the same function as the execution button 64 with a lamp is displayed in the 1 st color (for example, red). At this time, the print command operation by the operation instruction mark is also invalidated.
In the pressurized state determination control shown in fig. 6, the paper feed cassette 21 is set in the housing 2, and when the paper feed sensor 58 detects the presence of the recording material P in the paper feed cassette 21 (S01: yes), the size information of the recording material P by the paper feed width detection sensor 59, the paper type information of the recording material P by the paper thickness sensor 60, and the detection information (pressurized state information) of the roller position sensor 61 are acquired (S02), and it is determined whether or not the detection information of the roller position sensor 61 is suitable for the paper type information of the recording material P (S03).
At this time, the character data 65 of "please select the size and the paper type" is displayed on the operation panel 57 or the screen of the external terminal 70, and the size indicator 66 for the size information acquired in step S02 and the paper type indicator 67 for the paper type information are displayed (see fig. 8(a) to (c)). At this stage, the lighted execution button 64 or the operation instruction mark is also displayed in the 1 st color, and the printing instruction operation by the lighted execution button 64 or the operation instruction mark is invalidated. Further, when the detection information (the pressurized state information) of the roller position sensor 61 is intermediate information that is not accurate information (signal) due to dirt, mounting abnormality, or the like of the roller position sensor 61, the display of the 1 st color by the lighted execution button 64 or the operation instruction mark is continued, and the printing instruction operation by the lighted execution button 64 or the operation instruction mark is still invalidated. The intermediate information that is not accurate information includes incomplete information (signal) such as noise, for example.
Whether or not the detection information of the roller position sensor 61 is suitable for the paper type information means, specifically, whether or not the relationship between the pressing state and the corresponding paper type shown in fig. 4 is established. If the detection information of the roller position sensor 61 is not suitable for the paper type information (S03: no), the display of the 1 st color by the lighted execution button 64 or the operation indicator is continued, and the printing instruction operation by the lighted execution button 64 or the operation indicator is still disabled (S04). When the detection information of the roller position sensor 61 is suitable for the paper type information (S03: yes), switching is made so that the lighted execution button 64 or the operation indicator is displayed in the 2 nd color (for example, green), and the printing instruction operation in the lighted execution button 64 or the operation indicator is permitted (S05, refer to fig. 9(a) to (c)).
When a print command is received from the operation panel 57 or the external terminal 70, such as by pressing the size indicator 66 and the paper type indicator 67 on the screen of the operation panel 57 or the external terminal 70 (yes at S06), input size information and input paper type information of the recording material P included in the print command from the operation panel 57 or the external terminal 70 are acquired (S07), and it is determined whether the input size information and the input paper type information match the size information and the paper type information acquired at step S02 (S08).
When the input size information does not match the size information or the input paper type information does not match the paper type information (S08: no), the execution button 64 with a lamp or the operation indicator is displayed in the 1 st color, and printing based on the previous printing instruction is not executed by invalidating the printing instruction operation in the execution button 64 with a lamp or the operation indicator (S09, see fig. 10(a) to (c)). For example, when a size or a paper type different from the previously displayed marks 66 and 67 is selected on the operation panel 57 or the external terminal 70, the operation panel and the external terminal determine that they do not match in step S06.
When the input size information and the input paper type information match the size information and the paper type information (yes in S08), the processing speed of the printer 1 (including the rotation speed of the pressure roller 34) is set based on the paper type information acquired in step S02 (S10), and the temperature of the heating body 36 is set based on the paper type information acquired in step S02 (S11). At this time, the size indicator 66 of the size information acquired in step S02 and the paper type indicator 67 of the paper type information are displayed in the 2 nd color on the screen of the operation panel 57 or the external terminal 70 (see fig. 11(a) to (c)). Fig. 12 shows the relationship between the paper type information and the detection information (pressing state information) of the roller position sensor 61, the processing speed, and the set temperature of the heating body 36.
Then, after the setting in step S11, printing based on the previous print instruction is executed (S12).
(4) Embodiment 2 of the pressurized state determination control
Next, embodiment 2 of the pressurized state determination control by the control unit 28 will be described with reference to fig. 13 to 15. In the flowchart of embodiment 2 shown in fig. 14, steps T01 to T10 are the same as steps S01 to S10 of embodiment 1 shown in fig. 6, and therefore, detailed description thereof is omitted.
As shown in fig. 13, the present embodiment is different from embodiment 1 in that: a toner adhesion amount sensor 71 such as an optical sensor for detecting the amount of toner adhering to the intermediate transfer belt 6 is electrically connected to the controller 50 of embodiment 2.
In embodiment 2 of the pressurized state determination control shown in fig. 14, in step T11, the total amount of toner from the developing device 15 group is set based on the paper type information acquired in step S02, and then printing is executed based on the previous print command (T12). Fig. 15 shows the relationship between the paper type information and the detection information of the roller position sensor 61, the processing speed, and the total amount of toner from the developing device 15 group. When printing is performed, both the temperature setting of the heating body 36 in step S11 in embodiment 1 and the setting of the total toner amount in step T11 in embodiment 2 may be performed.
(5) Embodiment 3 of the pressurized state determination control
Next, embodiment 3 of the pressurized state determination control by the control unit 28 will be described with reference to fig. 16 and 17. In embodiment 3, the printer 1 and another printer 100 are communicably connected to the external terminal 70 via a network 200 such as a LAN, for example. The other printer 100 has the same configuration as the printer 1 described above.
In embodiment 3, an example in which various operations are performed on the operation panel 57 on the printer 1 side will be described. In the flowchart of embodiment 3 shown in fig. 17, steps E01 to E12 are substantially the same as steps S01 to S12 of embodiment 1 shown in fig. 6.
The point different from embodiment 1 is that, in the case where the detection information of the roller position sensor 61 is not suitable for the paper type information in step E03 (E03: no), the display of color 1 of the lighted execution button 64 is continued, and the operation by the print instruction in the lighted execution button 64 is still invalidated (E04). Thereafter, the control unit 28 on the printer 1 side acquires the detection information of the roller position sensor 61 and the paper type information of the recording material P in the other printer 100 (E13), and determines whether or not the detection information of the roller position sensor 61 is suitable for the paper type information in the other printer 100 (E14). In the case where the detection information of the roller position sensor 61 is suitable for the paper type information in the other printer 100 (E14: yes), switching is performed so that the lighted execution button 64 on the printer 1 side is displayed in the 2 nd color (for example, green), and the printing instruction operation in the lighted execution button 64 is permitted (E16). In the case where the detection information of the roller position sensor 61 is not suitable for the paper type information in the other printer 100 (E14: "no"), the display of the 1 st color by the lighted execution button 64 is continued, and the operation by the print instruction in the lighted execution button 64 is still disabled (E15).
When a print command is received from the operation panel 57 (E17: "yes") by, for example, pressing the size indicator 66 and the paper type indicator 67 of the operation panel 57, input size information and input paper type information of the recording material P included in the print command from the operation panel 57 are acquired (E18), and it is determined whether or not the input size information and the input paper type information match the size information and the paper type information of the other printer 100 acquired in step E13 (E19).
When the input size information does not match the size information of the other printer 100 or the input paper type information does not match the paper type information of the other printer 100 (E19: "no"), the execution button 64 with the lamp is displayed in the 1 st color, the printing instruction operation by the execution button 64 with the lamp is invalidated, and the printing by the printing instruction by the operation panel 57 on the printer 1 side is not executed in the other printer 100 (E20). When the input size information and the input paper type information match the size information and the paper type information of the other printer 100 (E19: "yes"), the other printer 100 executes printing based on the print command by the operation panel 57 on the printer 1 side (E21).
(6) The 4 th embodiment of the pressurized state discrimination control
Next, referring to fig. 16 and 18, embodiment 4 of the pressurization state determination control by the control unit 28 will be described. Embodiment 4 is a different example from embodiment 3, and an example in which various operations are performed by the external terminal 70 will be described. In the flowchart of embodiment 3 shown in fig. 18, steps P01 to P12 are substantially the same as steps S01 to S12 of embodiment 1 shown in fig. 6.
The difference from embodiment 1 is that, when the detection information of the roller position sensor 61 is not suitable for the paper type information in step P03 (P03: no), the display of color 1 of the operation indicator on the screen of the external terminal 70 is continued, and the print instruction operation in the operation indicator on the screen of the external terminal 70 is still disabled (P04). Thereafter, the control unit 28 on the printer 1 side acquires the detection information of the roller position sensor 61 and the paper type information of the recording material P in the other printer 100 (P13), and determines whether or not the detection information of the roller position sensor 61 is suitable for the paper type information in the other printer 100 (P14). In the other printer 100, when the detection information of the roller position sensor 61 is suitable for the paper type information (P14: "yes"), switching is performed so that the operation instruction indicator on the screen of the external terminal 70 is displayed in the 2 nd color (for example, green), and the printing instruction operation on the operation instruction indicator on the screen of the external terminal 70 is permitted (P16). In the other printer 100, when the detection information of the roller position sensor 61 is not suitable for the paper type information (P14: "no"), the display of the 1 st color of the operation indicator on the screen of the external terminal 70 is continued, and the printing instruction operation by the operation indicator on the screen of the external terminal 70 is disabled (P15).
When a print command is received from the external terminal 70 (P17: "YES") by, for example, pressing the size indicator 66 and the paper type indicator 67 on the screen of the external terminal 70, input size information and input paper type information of the recording material P included in the print command from the external terminal 70 are acquired (P18), and it is determined whether or not the input size information and the input paper type information match the size information and the paper type information of the other printer 100 acquired in step P13 (P19).
When the input size information does not match the size information of the other printer 100 or the input paper type information does not match the paper type information of the other printer 100 (P19: "NO"), the operation instruction indicator on the screen of the external terminal 70 is displayed in the 1 st color, the printing instruction operation by the printing instruction indicator on the screen of the external terminal 70 is invalidated, and the printing based on the printing instruction performed on the external terminal 70 side is not performed in the other printer 100 (P20). When the input size information and the input paper type information match the size information and the paper type information of the other printer 100 (P19: "yes"), the other printer 100 executes printing based on the print command performed on the external terminal 70 side (P21). In embodiments 3 and 4, it is obvious that a plurality of other printers 100 may be provided.
(7) Summary of the invention
As is clear from the above description, according to the embodiment, if the pressing force applied to the fixing nip portion 35 is not suitable for the recording material P, printing cannot be performed at all, and therefore, occurrence of erroneous printing can be reliably prevented. Further, it is possible to suppress the occurrence of high-temperature offset and the occurrence of image noise due to cleaning failure or the like caused thereby.
(8) Other than
The present invention is not limited to the above-described embodiments, and can be embodied in various forms. For example, although a printer is described as an example of the image forming apparatus, the present invention is not limited to this, and a copying machine, a facsimile machine, a multifunction peripheral having these functions in a combined manner, or the like may be used. The configuration of each part is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.
Claims (11)
1. An image forming apparatus includes:
a sheet feeding device that feeds out and conveys the recording materials in the recording material accommodating portion one by one; and
a fixing device for fixing the toner image on the recording material by passing the recording material through a fixing nip between a pair of rotating members,
wherein,
one of the rotating members is configured to be manually movable in contact with and away from the other rotating member in a thickness direction of the recording material passing through the fixing nip,
the image forming apparatus includes:
an operation display unit for displaying various information and receiving an operation;
a detection member that detects a position of the one rotating member; and
a control section for determining whether or not the detection information of the detection means is suitable for the recording material information on the recording material in the recording material containing section and the input information from the operation display section,
when the detection information of the detection means is not suitable for the recording material information or when the detection information is not suitable for the input information, the control unit prohibits printing on the recording material, and the control unit displays unsuitable information indicating the unsuitable information on the recording material on the operation display unit and invalidates the print instruction operation on the operation display unit.
2. The image forming apparatus as claimed in claim 1,
when the detection information of the detection means is suitable for both of the recording material information and the input information, the control unit displays suitable information indicating that on the operation display unit, and allows the printing instruction operation on the operation display unit.
3. The image forming apparatus as claimed in claim 1,
when the detection information of the detection means is intermediate information, the control unit displays unsuitable information indicating that the detection information is intermediate information on the operation display unit, and invalidates a print instruction operation on the operation display unit.
4. The image forming apparatus as claimed in claim 1,
when the detection information of the detection means is suitable for both the recording material information and the input information, the control unit changes the printing condition on the recording material based on the detection information of the detection means and the recording material information.
5. The image forming apparatus according to claim 4,
the printing condition is a set temperature of a heating body that heats the other rotating member.
6. The image forming apparatus according to claim 4,
the printing condition is the amount of toner adhering to a unit area of the recording material.
7. An image forming apparatus includes: a sheet feeding device that feeds out and conveys the recording materials in the recording material accommodating portion one by one; and a fixing device for fixing the toner image on the recording material by passing the recording material through a fixing nip portion between a pair of rotary members, wherein the image forming device is connected to an external terminal via a network so as to be able to communicate with the external terminal and is remotely operable through an operation display portion of the external terminal,
wherein,
one of the rotating members is configured to be manually movable in contact with and away from the other rotating member in a thickness direction of the recording material passing through the fixing nip,
the image forming apparatus includes:
a detection member that detects a position of the one rotating member; and
a control section for determining whether or not the detection information of the detection means is suitable for recording material information on the recording material in the recording material containing section and input information from the operation display section of the external terminal,
when the detection information of the detection means is not suitable for the recording material information or when the detection information is not suitable for the input information, the control unit prohibits printing on the recording material, and the control unit displays unsuitable information indicating the unsuitable information on the recording material on the operation display unit and invalidates the print instruction operation on the operation display unit.
8. The image forming apparatus as claimed in claim 7,
when the detection information of the detection means is suitable for both of the recording material information and the input information, the control unit displays suitable information indicating that on the operation display unit of the external terminal, and allows the printing instruction operation on the operation display unit of the external terminal.
9. The image forming apparatus as claimed in claim 7,
when the detection information of the detection means is intermediate information, the control unit displays unsuitable information indicating the detection information on the operation display unit of the external terminal, and invalidates a print instruction operation on the operation display unit of the external terminal.
10. An image forming system in which the image forming apparatus according to claim 1 is communicably connected to another image forming apparatus via a network,
in a case where the detection information of the detection means is not suitable for the recording material information or the input information, the control section determines whether or not the detection information of the detection means on the other image forming apparatus side is suitable for both the recording material information on the other image forming apparatus side and the input information from the operation display section on the image forming apparatus side,
when the print instruction is appropriate, the control unit displays the appropriate information indicating the appropriate information on the operation display unit on the image forming apparatus side, and allows the print instruction operation from the operation display unit on the image forming apparatus side to the other image forming apparatus.
11. An image forming system in which the image forming apparatus according to claim 7 is communicably connected to another image forming apparatus via a network,
in a case where the detection information of the detection means is not suitable for the recording material information or the input information, the control section determines whether or not the detection information of the detection means on the other image forming apparatus side is suitable for both the recording material information on the other image forming apparatus side and the input information from the operation display section of the external terminal,
when the print instruction is received, the control unit displays the information indicating the received print instruction on the operation display unit of the external terminal, and allows the operation of the print instruction from the operation display unit of the external terminal to the other image forming apparatus.
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| JP2014-221528 | 2014-10-30 | ||
| JP2014221528A JP6201958B2 (en) | 2014-10-30 | 2014-10-30 | Image forming apparatus and image forming system |
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| JP6603262B2 (en) * | 2017-04-28 | 2019-11-06 | シャープ株式会社 | Image forming apparatus and image forming method |
| US10558410B2 (en) | 2017-09-21 | 2020-02-11 | Canon Kabushiki Kaisha | Image forming apparatus |
| JP7363330B2 (en) * | 2019-10-09 | 2023-10-18 | 富士フイルムビジネスイノベーション株式会社 | Recording material transport device and image forming device |
Citations (2)
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| US5899598A (en) * | 1997-03-31 | 1999-05-04 | Kabushiki Kaisha Toshiba | Fixing device having a fixing temperature switching mechanism, method for controlling temperature of the fixing device and image forming apparatus having the fixing device |
| CN1621955A (en) * | 2003-11-28 | 2005-06-01 | 株式会社东芝 | Image forming apparatus and image forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01206383A (en) * | 1987-09-22 | 1989-08-18 | Ricoh Co Ltd | Image forming device |
| JP2005122649A (en) * | 2003-10-20 | 2005-05-12 | Kyocera Corp | Input control device |
| JP5165972B2 (en) * | 2007-09-04 | 2013-03-21 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| JP5343451B2 (en) * | 2007-09-14 | 2013-11-13 | 株式会社リコー | Image forming apparatus |
| JP2010021616A (en) * | 2008-07-08 | 2010-01-28 | Sharp Corp | Display device |
| JP5556829B2 (en) * | 2012-02-09 | 2014-07-23 | コニカミノルタ株式会社 | Remote operation system, image forming apparatus, remote operation apparatus, and program |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5899598A (en) * | 1997-03-31 | 1999-05-04 | Kabushiki Kaisha Toshiba | Fixing device having a fixing temperature switching mechanism, method for controlling temperature of the fixing device and image forming apparatus having the fixing device |
| CN1621955A (en) * | 2003-11-28 | 2005-06-01 | 株式会社东芝 | Image forming apparatus and image forming method |
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| JP2016090654A (en) | 2016-05-23 |
| CN105573078A (en) | 2016-05-11 |
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