CN1428666A - Imaging device and treating unit thereof - Google Patents

Imaging device and treating unit thereof Download PDF

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Publication number
CN1428666A
CN1428666A CN02160644A CN02160644A CN1428666A CN 1428666 A CN1428666 A CN 1428666A CN 02160644 A CN02160644 A CN 02160644A CN 02160644 A CN02160644 A CN 02160644A CN 1428666 A CN1428666 A CN 1428666A
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CN
China
Prior art keywords
developing cell
processing unit
guide rod
photosensitive
imaging device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN02160644A
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Chinese (zh)
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CN100451857C (en
Inventor
冈部靖
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Brother Industries Ltd
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Brother Industries Ltd
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Filing date
Publication date
Priority claimed from JP2001277605A external-priority patent/JP2003084645A/en
Priority claimed from JP2001277606A external-priority patent/JP2003084648A/en
Priority claimed from JP2001277604A external-priority patent/JP2003084647A/en
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Publication of CN1428666A publication Critical patent/CN1428666A/en
Application granted granted Critical
Publication of CN100451857C publication Critical patent/CN100451857C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1839—Means for handling the process cartridge in the apparatus body
    • G03G21/1842—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks
    • G03G21/1853—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks the process cartridge being mounted perpendicular to the axis of the photosensitive member
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1817—Arrangements or disposition of the complete process cartridge or parts thereof having a submodular arrangement
    • G03G21/1821—Arrangements or disposition of the complete process cartridge or parts thereof having a submodular arrangement means for connecting the different parts of the process cartridge, e.g. attachment, positioning of parts with each other, pressure/distance regulation
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1817—Arrangements or disposition of the complete process cartridge or parts thereof having a submodular arrangement
    • G03G21/1825—Pivotable subunit connection
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1839—Means for handling the process cartridge in the apparatus body
    • G03G21/1842—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks
    • G03G21/1846—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks using a handle for carrying or pulling out of the main machine, legs of casings
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1875—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit provided with identifying means or means for storing process- or use parameters, e.g. lifetime of the cartridge
    • G03G21/1896—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit provided with identifying means or means for storing process- or use parameters, e.g. lifetime of the cartridge mechanical or optical identification means, e.g. protrusions, bar codes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1606—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/163—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the developer unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1654—Locks and means for positioning or alignment
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1678—Frame structures
    • G03G2221/1684—Frame structures using extractable subframes, e.g. on rails or hinges
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/18—Cartridge systems
    • G03G2221/183—Process cartridge
    • G03G2221/1846—Process cartridge using a handle for carrying or pulling out of the main machine
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/18—Cartridge systems
    • G03G2221/183—Process cartridge
    • G03G2221/1853—Process cartridge having a submodular arrangement
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/18—Cartridge systems
    • G03G2221/183—Process cartridge
    • G03G2221/1884—Projections on process cartridge for guiding mounting thereof in main machine
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/18—Cartridge systems
    • G03G2221/183—Process cartridge
    • G03G2221/1892—Presence detection

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  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

A developing unit is detachably mounted on a photosensitive unit to form a combined unit called a process unit. In use, the process unit is loaded into an electrophotographic image forming device. A rotational shaft of the photosensitive drum projects out from a photosensitive unit. When the process unit is loaded into the image forming device from a top open space, both ends of the rotational shaft are engaged with a pair of guides formed in side walls of the image forming device and guided down along the guides. The process unit is accommodated in an accommodating section when both ends of the rotational shaft have been brought into abutment with stops at the ends of the guides and a trailing end of the process unit is rotated downward about the rotational shaft.

Description

Imaging device and used processing unit thereof
Technical field
The present invention relates to a kind of electrophotographic imaging forming apparatus such as laser printer, duplicating machine or facsimile recorder.More particularly, the present invention relates to the processing unit in a kind of this imaging device of removably packing into, and a kind of structure that is used to accept and hold the imaging device of this processing unit.
Background technology
Traditional imaging device such as laser printer use a processing unit.This processing unit for example is the assembled unit of a photosensitive unit and a developing cell.This photosensitive unit comprises a photosensitive drums and a charger.Developing cell comprises a developer roll and a powder box that wherein contains developer (ink powder).
During printing, developer roll is pulled on the photosensitive drums, and developer roll just is delivered to ink powder on the photosensitive drums like this.Photosensitive drums is pulled on the transfer roll too.
For the ease of safeguarding and be convenient to disintegration after the paperboard that processing unit is removably mounted on the imaging device.That is to say, for example when paperboard takes place, processing unit is pulled down and installed on the imaging device from imaging device.
Processing unit is installed in special permission publication publication number JP2000-250310 recommended levels ground by Japan.Horizontal mount type processing unit needs a latch mechanism, and the processing unit of being installed to prevent is unexpectedly dismantled.In order to bear the strong removal force that is applied on the processing unit, need the latch mechanism of a rigidity.Yet if adopt the rigidity latch mechanism, the structure of imaging device can not reduce with regard to cost not compact and imaging device with regard to remarkable, size.
For photoconductive drum unit and developing cell are combined, Japan special permission publication publication number JP8-185108 discloses and uses a connecting pin.Yet connecting pin is being inconvenient with developing cell when photosensitive drums is pulled down.Thereby, when no toner, spended time to change a new developing cell.
Shift onto on the transfer roll for developer roll is shifted onto on the photosensitive drums and with photosensitive drums, Japan special permission publication publication number JP8-185108 has disclosed and has been used for shifting developer roll onto on the photosensitive drums first push mechanism and is used for shifting photosensitive drums onto on the transfer roll second push mechanism.Yet, use two push mechanism to make the total complexity, and cause the increase of number of elements.Equally, the imaging device with two push mechanism can not be made compactly.
Summary of the invention
The present invention proposes for addressing the above problem, therefore an object of the present invention is to provide a kind of imaging device and a processing unit, wherein processing unit can be packed in the image-generating unit and processing unit can not easily disassemble from image-generating unit easily.
Another object of the present invention provides a kind of processing unit, and wherein developing cell can easily be installed on the photosensitive unit and from photosensitive unit and disassemble.
Another purpose of the present invention provides a kind of imaging device, and this imaging device has a simple structure to be held a processing unit and when processing unit is accepted and is contained in the processing unit holding portion developer roll is shifted onto on the photosensitive drums.
In order to realize above-mentioned and other purposes, according to an aspect of the present invention, a kind of imaging device is provided, and this device comprises a shell (2), a pair of first guide rail (55), a processing unit (17), a processing unit holding portion (57) and a pair of second guide rail (56).First guide rail (55) extends downwardly into end (55a).Processing unit (17) has a guide rod (27a), and when shell (2) that processing unit is packed into was middle, its two ends can engage with first guide rail (55), and (55a's guide rod (27a)) leads downwards towards the end along first guide rail (55).Second guide rail (56) is formed between first guide rail (55), is used for the head room clearance guiding end (55a) of processing unit (17) from shell (2).When the two ends of processing unit (17) guide rod (27a) begin and end (55a) adjacency, and the rear end of processing unit (17) is along guide rail (27a) when rotating, and processing unit (17) is contained in the processing unit holding portion (57).
The imaging device that such structure has been arranged, image-generating unit (17) can easily be contained in the processing unit holding portion (57).This can realize by guide rod (27a) being engaged with first guide rail and processing unit (17) being placed on second guide rail.When the beginning of the guide rail (27a) of processing unit and end (55a) in abutting connection with the time, the rear end of processing unit (17) since the weight of himself rotate automatically and be contained in the holding portion.Equally, by the rear end of lifting processing unit, and be placed on second guide rail, processing unit also can easily disassemble from imaging device.
When processing unit (17) is contained in the processing unit holding portion (57), a posture keeper (81) can be installed on processing unit to keep the posture of processing unit (17).
Preferably, each U-lag form that first guide rail (55) is right for prolonging, each end of guide rod (27a) all inserts in the U-lag, and right each of second guide rail (56) is the track form with a top plan, and processing unit (17) can slide along it and move.
Also can provide a retention mechanism (66) to be fastened on the shell (2) with rear end with processing unit (17).Wish that retention mechanism (66) is arranged in processing unit holding portion (57).Retention mechanism (66) can be configured to the rear end resilient engagement with processing unit (17).
Processing unit (17) comprises a photosensitive unit (26) and a developing cell (28).Developing cell (28) is removably mounted on the photosensitive unit (26).Photosensitive unit (26) comprises a photosensitive drums (27), and developing cell (28) comprises a developer roll (31).The rotation axis of photosensitive drums (27) can be used as guide rod (27a).
Also can provide a fixed mechanism (80,81) so that processing unit (17) is fixed on the processing unit holding portion (57).
When processing unit (17) when being partial in a predetermined direction, wish that processing unit (17) is contained in the processing unit holding portion (57).Given this, processing unit just is not easy to disassemble from holding portion (57).
Processing unit (17) can form with an auxiliary guide (31a), when packing processing unit (17) into shell (2) to determine the installation direction of processing unit.
Wish that developing cell (28) has a basal surface, a prime keeper is being installed to be installed in the posture that keeps developing cell (28) when photosensitive unit (26) is gone up when developing cell (28) on this surface, and photosensitive unit (26) has a basal surface, the posture of maintenance photosensitive unit (26) when second keeper of installation on this surface is gone up to be contained in processing unit holding portion (57) when photosensitive unit (26).Preferably, prime keeper and second keeper are installed in the position relative to each other.
According to another aspect of the present invention, provide a kind of imaging device, this device comprises a shell (2), a processing unit (17), a processing unit holding portion (57) and a pushing mechanism (70).Shell (2) has the wall (2b) of pair of upright, and each wall all is formed with one first guide rail (55), and extends to a first end (55a).Processing unit (17) is removably mounted on the shell (2).Processing unit (17) comprises a photosensitive unit (26) and a developing cell (28).Photosensitive unit (26) has at least one photosensitive drums (27) and first guide rod (27a) that can engage with first guide rail (55).When photosensitive unit was packed shell (2) into, first guide rod (27a) led along first guide rail (55) towards first end (55a) downwards.Developing cell (28) has at least one developer roll (31).Photosensitive drums (27) can be shifted to and move apart to developer roll (31).A processing unit holding portion (57) is set, is used for accepting and holding processing unit (17).When the end of processing unit (17) around first guide rod (27a) that is positioned at first end (55a) when rotating, processing unit just is contained in wherein.Pushing mechanism (70) promotes developing cell (28) like this, is about to developer roll (31) and shifts onto on the photosensitive drums (27).
The imaging device that such structure has been arranged, when developer roll (31) is pulled on the photosensitive drums (27) by pushing mechanism (70), photosensitive unit (26) also is pushed at the equidirectional that is pushed with developer roll, so just photosensitive unit (26) can be fixed to a precalculated position.
When photosensitive unit (26) when the head room clearance of shell (2) is packed into the shell (2), photosensitive unit (26) is removably mounted in the processing unit holding portion (57).Equally, developing cell (28) is removably mounted on the photosensitive unit (26) that is installed in the processing unit holding portion (57).Therefore, the replacing of developing cell can easily be finished.
Wish that developing cell (28) is formed with a copulational protuberance (71).When processing unit (17) rotated along first guide rod (27a) that is positioned at first end (55a), this copulational protuberance (71) beginning engaged with pushing mechanism (70).Developing cell (28) has one second guide rod (31a) and a pair of gathering sill (61) that is formed on the photosensitive unit (26).Gathering sill (61) extends near the second end (56a) the first end (55a), and with two terminal guide the second ends (56a) of second guide rod (31a).When developing cell (28) rotated along second guide rod (31a) that is positioned at the second end (56a), copulational protuberance (71) beginning engaged with pushing mechanism (70).
Also can provide a separating mechanism (77) to be used for leaving mobile developing cell (28) on the direction of photosensitive drums (27) at developer roll (31).A holder that is used for clamping copulational protuberance (71) equally, also can be provided.Pushing mechanism (70) and separating mechanism (77) can be used as holder.
Perhaps, holder can comprise that first holder (73) and with one first movable terminal has second holder (72) of one second movable terminal.When first movable terminal and second movable terminal were mobile mutually, copulational protuberance (71) was clamped.When first movable terminal and second movable terminal leave mutually, just has a space between first movable terminal and second movable terminal.Therefore, when developing cell moved down, holder can easily clamp copulational protuberance (71).Pushing mechanism (70) can comprise an impeller (76), and this impeller (76) is pushed first holder (73) to second impeller (72), thereby developer roll (31) is shifted onto on the photosensitive drums (27).Separating mechanism (77) can comprise a moving member (78,79), and this moving member makes second holder (72) shift to first holder (73), thereby makes developer roll (31) leave photosensitive drums (27).
Each sidewall of wishing developing cell (28) is formed with a copulational protuberance (71).In this case, pushing mechanism (70) and separating mechanism (77) are positioned at each side of pair of straight wall, so as be formed on a pair of developing cell (28) sidewall in copulational protuberance (71) on each engage.
Wish that also shell (2) forms a pair of second guide rail (56) between first guide rail (55), be used for the head room clearance guiding processing unit holding portion (57) of processing unit (17) from shell (2).
First guide rod (27a) can be the rotation axis of photosensitive drums (27), and second guide rod (31a) can be the rotation axis of developer roll (31).
According to further aim of the present invention, a kind of imaging device is provided, and this device comprises a shell (2), a photosensitive unit (26), a developing cell (28), a pair of first guide rail (55), a photo-sensitive cell holding portion (57) and a pair of gathering sill (61).Shell (2) is limited by one first antetheca (2a), the first side wall (2b) that is separated from each other a preset distance and one first rear wall (2c).Photo-sensitive cell (26) has one second antetheca, is separated from each other second sidewall (26e) of a preset distance shorter than first preset distance, one second rear wall and from outstanding first guide rod (27a) of second sidewall (26e).Photo-sensitive cell (26) comprises a photosensitive drums (27) at least.Developing cell (28) has a pair of first guide rail (55), one the 3rd antetheca, is separated from each other the 3rd sidewall (28e) of a preset distance shorter than second preset distance, one the 3rd rear wall and from the 3rd sidewall 28e) outstanding second guide rod (31a).Developing cell (28) is removably mounted on the photosensitive unit (26).Comprise at least one developer roll (31) in the developing cell (28).
Each first guide rail (55) is formed on each the first side wall (2b) and goes up and extend to a first end (55a).First guide rail (55) is provided, when photosensitive unit (26) when the head room clearance of shell (2) is packed shell (2) into, simultaneously second antetheca is orientated the front side and second rear wall is a rear side, be used for first guide rod (27a) guiding first end (55a).Provide a photo-sensitive cell holding portion (57), when when rotating, being used for accepting and holding photo-sensitive cell (26) along first guide rod (27a) that is positioned at first end (55a).Each gathering sill (61) is formed on each second sidewall (26e) and goes up and extend to the second end (56a).One gathering sill (61) is provided, is used for second guide rod (31a) guiding the second end (56a).Photosensitive unit (26) has a developing cell mounting portion, when developing cell (28) during along a pair of gathering sill (61) to the second end (56a), is used for installing developing cell (28) from the head room clearance of shell (2) thereon.First guide rail (55) is parallel to (61) with gathering sill basically.
According to the building mortion of such structure, developing cell can be installed on the photosensitive unit or from photosensitive unit and pull down, and no matter whether photosensitive unit packs into imaging device or pull down from imaging device.In addition, developing cell is installed in can easily once pack into imaging device or unload from imaging device of assembled unit on the photosensitive unit.
Wish that photosensitive unit (26) is provided with locking member (62), the developing cell (28) that is used for being installed on the developing cell mounting portion is locked to photosensitive unit (26).Therefore, when developing cell was locked on the photosensitive unit with locking member, photosensitive unit and developing cell can load and move by only catching photosensitive unit or developing cell.Developing cell can easily only unload from photosensitive unit by unclamping locking member.Wish that locking member (62) is arranged on the rear wall of photosensitive unit (26).
Locking member (62) has a locked position, be used for developing cell (28) is locked to the photosensitive unit (26) that is contained in photosensitive unit holding portion (57), and a release position, be used for developing cell (28) is unclamped from the photosensitive unit (26) that is contained in photosensitive unit holding portion (57).Similarly, developing cell can be easily mounted on the photosensitive unit and from photosensitive unit and unload, and simultaneously photosensitive unit is stayed the photosensitive unit holding portion.
When second guide rod (31a) was positioned at the second end (56a), developing cell (28) can pivot along second guide rod (31a) and move.Therefore, by catching the rear end of developing cell that second guide rod is downward, and move second guide rod along the gathering sill that is formed in the photo-sensitive cell, developing cell just can be installed on the photo-sensitive cell and from photo-sensitive cell and unload.In the case, photo-sensitive cell can be contained in the outside that the photo-sensitive cell holding portion maybe can unload and be placed on imaging device from imaging device.
A pushing mechanism (70) that is used to promote developing cell (28) also can be provided.Developing cell (28) is pushed like this, that is, wherein included developer roll (31) is shifted onto on the photosensitive drums (27).By first guide rod of the mobile photosensitive unit that slides along the first rail, when first guide rod begin with first end in abutting connection with the time because himself weight, photosensitive unit is contained in the photosensitive unit holding portion automatically.In case photosensitive unit is contained in the holding portion, photosensitive unit does not just allow to move horizontally.Therefore, photosensitive unit must easily unload from the installation site.In the case, when photosensitive unit was installed on the photosensitive unit, pushing mechanism promoted developing cell like this, that is, developer roll is shifted onto on the photosensitive drums.This just means that photosensitive unit is also promoted by pushing mechanism, and is fixed to a precalculated position.
First guide rod (27a) can be the rotation axis of photosensitive drums (27), and second guide rod (31a) is the rotation axis of developer roll (31).In the case, on the imaginary line that is centered close to connection first guide rod (27a) of second guide rod (31a), and push mechanism (79) promotes on the point of developing cell (28).
Because first guide rail is basically parallel to gathering sill, and has above-mentioned geometric relationship, so the packing into and developing cell is installed is finished in an identical manner basically of photosensitive unit on installed photosensitive unit.
Developing cell (28) can be formed with a copulational protuberance (71).When photosensitive unit (26) and the developing cell that is installed in the developing cell mounting portion when first guide rod (27a) that is positioned at first end (55a) rotates, this copulational protuberance (71) beginning engages with pushing mechanism (70).
For such layout, the copulational protuberance that is formed on the developing cell only just begins to engage with pushing mechanism by the photosensitive unit that is contained in the photosensitive unit holding portion automatically.Similarly, the location of photosensitive unit and developer roll shifted onto on the light-sensitive roller also can realize with an operating of contacts.
Copulational protuberance (71) is preferably formed on each the 3rd sidewall (28e).Therefore, the expulsive force that passes on the photosensitive drums becomes consistent on its length direction.
According to further purpose of the present invention, provide a kind of photosensitive unit that can pack imaging device into and unload from imaging device.Imaging device comprise a shell (2) with pair of straight wall (2b), a pair of each all be formed in the pair of straight wall (2b) first guide rail (55) on each, be formed on a pair of second guide rail (56) and a photosensitive unit holding portion (57) between a pair of first guide rail (55).This photosensitive unit comprises a housing, photosensitive drums and a guide rod (27a).This housing has pair of sidewalls and a diapire.Diapire and a pair of second guide rail (56) sliding contact.When housing was loaded into shell (2), shell was along a pair of second guide rail end (55a) of leading downwards.Photosensitive drums (27) is placed in the housing rotationally.Guide rod (27a) is outstanding from pair of sidewalls.The two ends of guide rod (27a) can engage with a pair of first guide rail (55).Guide rod (27a) is along a pair of first guide rail (55) end (55a) of leading downwards.At last, when rotating, housing is contained in the photosensitive unit holding portion (57) along guide rod (27a) in the rear end that begins and housing adjacent with end (55a) when the two ends of guide rod (27a).
According to further purpose of the present invention, provide a kind of photosensitive unit, can pack into imaging device and unload of this photosensitive unit from imaging device.This imaging device has a shell (2) and the photosensitive unit holding portion (57) in shell (2).A pair of first guide rail (55) is formed in the shell (2) and extends to first end (55a).Photosensitive unit comprises a sensitization housing, a photosensitive drums (27), first guide rod (27a) and a developing cell mounting portion.A pair of gathering sill (61) is formed in the sensitization housing and extends to the second end (56).Photosensitive drums (27) is included in the sensitization housing.First guide rod (27a) is outstanding from the sensitization housing.When photosensitive unit when the head room clearance of shell (2) is packed shell (2) into, first guide rod (27a) is along a pair of first guide rail (55) guiding first end (55a).At last, when the sensitization housing along first guide rod (27a) that is positioned at first end (55a) when rotating, the sensitization housing is accepted and is contained in the photosensitive unit holding portion (57).Provide a developing cell mounting portion to be used for installing a developing cell (28) thereon.Developing cell has a developer roll (31) and one second guide rod (31a).When developing cell (28) from the head room clearance of shell (2) is packed shell (2) into, when simultaneously second guide rod (31a) had a pair of gathering sill (61) guiding to arrive the second end (56a), developing cell just was installed in the developing cell mounting portion.A pair of first guide rail (55) forms abreast with a pair of gathering sill (61) basically.
According to further purpose of the present invention, a kind of developing cell is provided, this developing cell can be loaded into imaging device and unload from imaging device.This imaging device comprises a shell (2), a photosensitive unit holding portion (57) and a pushing mechanism.Shell (2) has pair of straight wall (2b), all is formed with a guide rail (55) on each upstanding wall and extends to end (55a).Provide a photosensitive unit holding portion (57) to be used for accepting and holding photosensitive unit (26).Photosensitive unit (26) has a guide rod (27a) and a photosensitive drums (27).When photosensitive unit (26) was loaded in the shell (2), guide rod (27a) can engage with guide rail (55) and along guide rail (55) end (55a) of leading downwards.When rotating along the guide rod (27a) that is positioned at end (55a), photosensitive unit (26) is accommodated in the photosensitive unit holding portion (57).Developing cell comprises a housing, a developer roll (31) and a copulational protuberance (71).Developer roll (31) is placed in the housing rotationally.Copulational protuberance (71) is formed on each of pair of sidewalls of housing.Pushing mechanism (70) promotes housing like this, that is, developer roll (31) is shifted onto on the photosensitive drums (27).
It should be noted, be included in the corresponding component that reference number in the parenthesis is represented the embodiment that describes later.
Brief description of drawings
By the description below in conjunction with accompanying drawing, concrete feature and advantage of the present invention and other purposes will become more obvious.
Fig. 1 is a cross-sectional figure, shows a laser printer according to the embodiment of the invention;
Fig. 2 is the cross-sectional figure of an amplification, shows the major part of the unit of printer processes shown in Fig. 1;
Fig. 3 is a side view, shows developing cell is combined to process on the photosensitive unit;
Fig. 4 is a vertical view, shows a processing unit holding portion;
Fig. 5 is a side view, shows first guide rail, second guide rail and a pushing mechanism;
Fig. 6 is a side view, shows the latch mechanism that is used to lock processing unit;
Fig. 7 is a side view, shows the process that developing cell is combined to the photosensitive unit of the processing unit holding portion of packing into;
Fig. 8 is the side view of an amplification, shows to be used for developing cell is locked to latch mechanism on the photosensitive unit;
Fig. 9 is the skeleton view of photosensitive unit;
Figure 10 is the skeleton view of developing cell;
Figure 11 is a processing unit skeleton view, and developing cell shown in Figure 10 is installed and is combined on the photosensitive unit shown in Figure 9 in this processing unit.
Embodiment
The laser printer of the preferred embodiment of the present invention is described below with reference to accompanying drawings.In the following description, suppose that laser printer is placed on the predetermined direction of using, will use " downwards ", " preceding ", " back ", " ... on ", " ... following ", " ... under " etc. term.
Fig. 1 is the cross-sectional figure of a laser printer.As shown in the figure, laser printer 1 has a shell 2, and a paper-supply section 4 and an imaging moiety 5 wherein are installed.Imaging moiety 5 imaging on the paper that is provided by paper-supply section 4.
Paper-supply section 4 comprises that a sheet feed stacker 6, one push away cardboard 7, paper feed roller 8, paper supply pad 9, a pair of paper cleaning roller 10, a pair of paper feed roller 11 and a pair of registration rollers 12.Sheet feed stacker 6 is detachably mounted on the bottom of shell 2.Paper feed roller 6 is arranged in the top of sheet feed stacker 6 one ends rotationally.Paper cleaning roller 10 is disposed in the downstream of paper feed roller 8 with respect to the defeated paper direction of conveyance of sheets.Alignment roller 12 is disposed in the downstream of paper feed roller 11.
Pushing away cardboard 7 is disposed in the sheet feed stacker 6.Push away cardboard 7 around it away from the supporting movably that can be pivoted of end of paper feed roller 8, and by being provided at the spring (not shown) that the pushes away cardboard 7 downsides bias voltage that makes progress.One stacker 3 is suitable for being placed on and pushes away on the cardboard 7.The biasing force that the free end that pushes away cardboard 7 overcomes spring is moved down into a degree, and this degree depends on and is stacked on the number of paper that pushes away on the cardboard 7.
Paper feed roller 8 and paper supply pad 9 are opposed mutually.Paper supply pad 9 is pressed on the paper feed roller 8 by the spring 13 that is arranged in paper supply pad 9 rear surfaces.Paper feed roller 8 is pushed down by the spring that the bias voltage that makes progress pushes away cardboard 7 in the top that is stacked on sheet feed stacker 6 uppermost paper 3, and is clamped by paper feed roller 8 and paper supply pad 9, and the rotation by paper feed roller 8 is transferred then.By the slit between the paper process paper cleaning roller 10 of paper feed roller 8 supplies, here paper cleaning roller 10 is eliminated the dust on the paper to a certain degree.Subsequently, paper is further transported to alignment roller 12 by paper feed roller 11, and here paper is aligned, and is supplied to imaging moiety 5 then.
Paper-supply section 4 also comprises a multi-usage pallet 14, a multi-usage paper feed roller 15 and a multi-usage paper supply pad 25.Multi-usage paper feed roller 15 and 25 supplies of multi-usage paper supply pad are stacked on the paper on the multi-usage pallet 14.Multi-usage paper feed roller 15 and multi-usage paper supply pad 25 are opposed mutually.A spring that is arranged in multi-usage paper supply pad 25 lower surfaces is pressed to multi-usage paper feed roller 15 with multi-usage paper supply pad 25.The paper 4 that the rotation of multi-usage paper feed roller 15 will be stacked on the multi-usage pallet 14 is clipped between multi-usage paper feed roller 15 and the multi-usage paper supply pad 25, and a ground is supplied to alignment roller 12 with paper 3 then.
Imaging moiety 5 comprises a scanning element 16, a processing unit 17 and a fixation unit 18.Scanning element 16 is on the top of shell 2, and comprises a polygonal mirror 19, lens 20 and 22 and catoptrons 21.The laser beam that the lasing light emitter emission is modulated according to view data.Shown in dot-and-dash line among Fig. 1, polygonal mirror 19 reflections that laser beam is rotated, through lens 20, by catoptron 21 reflections, scioptics 22 then.The surface of photosensitive drums 27 in the laser beam flying processing unit 17 of scioptics 22.The following describes the assembled unit that term used in the book " processing unit " is meant a developing cell 28 and photosensitive unit 26.
Processing unit 17 be disposed in scanning element 16 below.As shown in Figure 2, processing unit 17 comprises photosensitive drums 27, scorotron charhing unit 29, transfer roll 30, clearer 51, a help roll 52 and a sliding part 53.These parts of processing unit 17 all are contained in the photosensitive unit 26 that can be installed in the shell with freely dismantling.
Laser printer 1 at first utilizes developer roll 31 to collect photosensitive drums 27 lip-deep residual toner.That is to say that developer roll 31 is collected in ink powder and transfers to the ink powder that remains in afterwards on the paper 3 on the photosensitive drums 27.So, just need not provide a cleaning blade and parts that are used to keep useless ink powder.Therefore, printer can be made into to construct simpler, compacter, more cheap.
Preferably as shown in Figure 2, the rotation axis 27a that photosensitive drums 27 has a rotation axis with developer roll 31 to extend in parallel, and photosensitive drums 27 contacts with developer roll 31.Photosensitive drums 27 can be rotated in the counterclockwise direction, and developer roll 31 can be that clockwise direction is rotated in opposite direction, shown in arrow among Fig. 2.Photosensitive drums 27 comprises drum and photographic layer that covers this drum outside surface of a ground connection.Photographic layer is to be made by following material, from the amorphous silicon group, select as α-Si:H, from the cadmium sulfide group, select as CdS, from the zinc paste group, select as ZnO, making of from the selenium group, selecting as selenium or by organic photo material such as polycarbonate.These photosensitive materials have the characteristic that can fill positive charge.
Shown in Fig. 3 and 4, the rotation axis 27a of photosensitive drums 27 stretches out from photosensitive unit 26, and by an initiatively motor (not shown) rotation.
Scorotron charhing unit 29 is disposed in the top of photosensitive drums 27, and separates a predetermined distance with photosensitive drums 27, so just so as not to contacting with photosensitive drums 27.Scorotron charhing unit 29 can fill the positive charge type, and it can produce corona discharge from the charging wire made from for example tungsten.Scorotron charhing unit 29 fills the electric charge of positive polarity with for the surface of photosensitive drums 27 equably.Scorotron charhing unit 29 is by a charge power supply (not shown) conversion ON (opening) and OFF (pass).
Combine with the rotation of photosensitive drums 27, the surface of photosensitive drums 27 is charged as positive polarity by Scorotron charhing unit 29 equably, exposes under laser beam light then.Laser beam is sent from scanning element 16, simultaneously by the view data modulation, and in the Width high-velocity scanning of photosensitive drums 27.Because laser beam lithography, electrostatic latent image just is formed on the surface of photosensitive drums 27.
Transfer roll 30 be disposed in photosensitive drums 27 below, contact simultaneously with photosensitive drums 27.Transfer roll 30 is supported on the photosensitive unit 26, so that can rotate along the clockwise direction shown in the arrow among Fig. 2.Transfer roll 30 is made of a metallic roll and a kind of ionic conduction elastomeric material that covers this metallic roll.When ink powder when photosensitive drums 27 shifts, transfer bias applies power supply and applies a forward bias and give transfer roll 30.In the time of between paper 3 is by photosensitive drums 27 and transfer roll 30, photosensitive drums 27 lip-deep visible ink powder images just are transferred on the paper 3.
Developing cell 28 is detachably mounted on the photosensitive unit 26.Developing cell 28 comprises that a developer roll 31, layer thickness regulate blade 32, a feed rolls 33 and a powder box 34.
Powder box 34 is full of the non magnetic single component ink powder with positive charging characteristic matter.In this example, the ink powder of filling powder box 34 is a kind of by the resulting polymkeric substance ink powder of the monomer copolymerization with polymerization property.Copolymerization can be finished by known polymerization such as suspension polymerization.The example of available monomer comprises a kind of styrene monomer such as styrene or a kind of acrylic monomers such as acrylic acid, alkyl (C1-C4) acrylate and alkyl (C1-C4) methacrylate.The polymkeric substance toner particles is spherical, and ink powder just has very high flowability like this.Equally, colorant such as carbon black and wax are dispersed in the ink powder.Equally, add a kind of outside condiment such as silicon dioxide to increase the flowability of polymkeric substance ink powder.The particle size of toner particles is between about 6 to 10 microns.
Rotation axis 35 is at the center of powder box 34.A stirrer 36 is supported on the rotation axis 35.Stirrer 36 rotates along the counter clockwise direction shown in the arrow among Fig. 2.Stirrer has stirred the ink powder in the powder box 34, also opens at the ink powder supply opening 37 of powder box 34 sides by one ink powder is released.Window 38 is formed on the sidewall of powder box 34.Window 38 is used for detecting the amount of toner that remains in powder box 34.Equally, a clearer 39 also is supported in and is used for clean window 38 on the rotation axis 35.
Feed rolls 33 is disposed in a side of ink powder supply opening 37.Feed rolls 33 can be rotated along the clockwise direction shown in the arrow among Fig. 2.Developer roll 31 is arranged face-to-face with feed rolls 33, and can be rotated along the clockwise direction shown in the arrow among Fig. 2.Feed rolls 33 and developer roll 31 are adjacent to each other like this, that is, each roller all is compressed to a certain degree.
Feed rolls 33 is conductive foam rollers that cover metal roller shaft.Developer roll 31 is conducting rubber rollers that cover metal roller shaft.More particularly, the foam roller of developer roll 31 partly comprises a cated roll body of surface coverage.Roll body is made by conductive silicon rubber that comprises carbon granule or urethane rubber.Coating is silicon rubber or the urethane rubber that comprises fluoride.Developer roll 31 applies the power supply (not shown) by a development bias voltage and applies a development bias voltage.
Bed thickness regulate blade 32 be disposed in developer roll 31 near.Bed thickness is regulated blade 32 and is comprised a cutter hub and a press portion 40.Cutter hub is made by a metal leaf springs.Press portion 40 is positioned at the free end of cutter hub.The transverse section of press portion 40 is dome-shaped, and is made by the silicon rubber with electrical insulation characteristics.Bed thickness is regulated blade 32 and is supported on the developing cell 28 a position near developer roll 31.The elastic force of cutter hub is pressed to press portion 40 on the surface of developer roll 31.
The ink powder of releasing from ink supply port 37 is supplied to developer roll 31 by the rotation of feed rolls 33.By the friction between feed rolls 33 and the developer roll 31, ink powder is filled with the electric charge of positive polarity.When developer roll 31 rotated, the ink powder on the developer roll 31 enters developer roll 31 and bed thickness is regulated between the press portion 40 of blade 32.By the friction between developer roll 31 and the bed thickness adjusting blade 32, ink powder is further charged, and is adjusted to the thin layer of a consistency of thickness on developer roll 31.
Developer roll 31 makes that positive electricity ink powder and photosensitive drums 27 on the developer roll 31 is face-to-face and when contacting, ink powder optionally sticks on the electrostatic latent image on photosensitive drums 27 surfaces, thereby latent electrostatic image developing is become a kind of visible ink powder image when rotating.As a result, oppositely development has just been finished.
As shown in Figure 1, fixation unit 18 is disposed in the downstream of processing unit 17.Fixation unit 18 comprises a hot-rolling 41, a press roller 42 and an a pair of transfer roller 43.Press roller 42 is pressed on the hot-rolling 41.Transfer roller 43 is disposed in the downstream of hot-rolling 41 and press roller 42.Hot-rolling 41 is made of metal, and comprises a Halogen lamp LED that is used to heat.After processing unit 17 China and Mexico's pruinescences were transferred on the paper 3, paper 3 passed through between hot-rolling 41 and press roller 42.Be fixed on the paper 3 from the heat melts ink powder of hot-rolling 41 and with ink powder.Then, transfer roller 43 is with paper 3 row's of being sent to paper passages 44.The paper 3 of the row's of being sent to paper passage 44 is transmitted to exit roller 45, and is discharged on the discharge tray 46.
Below with reference to Fig. 3,4 and 9-11 the situation that developing cell 28 loads and unloads on photosensitive unit 26 is described.
Fig. 9 shows photosensitive unit 26, and Figure 10 shows developing cell 28.Developing cell 28 is installed on the photosensitive unit 26 to form processing unit 17 as shown in figure 11.
Photosensitive unit 26 has the sidewall 26a of a preset distance separated from each other.Two ends of the rotation axis 27a of photosensitive drums 27 are outstanding from sidewall 26a.Guide plate 60 is also outstanding from the sidewall 26a near rotation axis 27a.When unit 26 or 17 was loaded in the shell 2, guide plate 60 synergic rotation axle 27a determined the installation direction of photosensitive unit 26 or processing unit 17.Photosensitive unit 26 has one and holds the drum unit holding portion that the bow member 26b of side cross-over connection sidewall 26a is limited by sidewall 26a and one at developing cell.The upper surface of developing cell mounting portion opens wide to allow developing cell 28 is mounted thereto.Developing cell gathering sill 61 is formed on each sidewall 26a, and uses when developing cell 28 loads and unloads on photosensitive unit 26.When developing cell 28 was installed, it was to place like this, that is, its developer roll one side is to photosensitive unit 26, and developing cell 28 is shifted to photosensitive unit 26 then.At this moment, the roll shaft 31a of developing cell gathering sill 61 guiding developer rolls 31 is until developer roll 31 beginnings and photosensitive drums 27 adjacency.When developer roll 31 and photosensitive drums 27 in abutting connection with the time, the axle 31a of developer roll 31 is positioned at end 61a, just the terminal position of gathering sill 61.
As shown in Figure 3, developing cell 28 is positioned at axle 31a can pivot around roll shaft 31a on the position of end 61 and moves.Rotate by the end with developing cell 28, developing cell 28 is loaded into the developing cell mounting portion.Bearing 28c who forms in developing cell 28 bottom surfaces begins the surface adjacency with the developing cell mounting portion, and the roll shaft 31a on being bearing in end 61a supports developing cell 28.Equally, bearing 26d is formed on the position at upper bracket 28c place, photosensitive unit 26 bottom surface.Bearing 26d is outwards outstanding, and its inside surface just is configured to hold the concave surface of bearing 28c like this.Thereby, when bearing 28c when the back side and bearing 26d closely cooperate, developing cell 28 just is positioned on the suitable position, developing cell mounting portion.
The outside surface of bow member 26b is provided with a latch mechanism 60.Latch mechanism 60 comprises a check lock lever 62a, and as shown in Figure 8, this check lock lever can pivot around axle 62b and move.Check lock lever 62a by a torsion spring 63 be pushed into be formed on developing cell 28 rear ends in projection 64 engage.Check lock lever 62a locks with the developing cell 28 of the developing cell holding portion that engaging of projection 64 will be installed in photosensitive unit 26.
As shown in Figure 4, convenient for the ease of operator's clamping, retained part 65 is positioned at the side of check lock lever 62a, and on the outside surface of bow member 26b.When the upper surface of catching developing cell 28 and retained part 65, the operator can mention the developing cell 28 and the photosensitive unit 26 of combination.In the case, because when mentioning developing cell 28, the roll shaft 31a of developer roll 31 keeps engaging with locking slot 61a, and photosensitive unit 26 does not just separate with developing cell 28.Like this, the laser printer 1 or unload no matter whether photosensitive unit 26 and developing cell 28 pack into from laser printer 1, developing cell 28 can engage with photosensitive unit 26 and throw off.
Shown in Fig. 1,2 and 4, handle box inserts upper surface discharge tray 46 position forward that opening is formed on shell 2.This opening is limited by header board 2a, a left side and right side wall 2b.One can cover these openings around the lid 54 that axle 54a pivot moves.
Shown in Figure 4 and 5, first guide rail 55 is formed on the inside surface of a left side and right plate 2b.First guide rail 55 tilts towards its stop position or end 55a downwards.When observing from the side, first guide rail 55 is U-lags of a prolongation, and the rotation axis 27a of photosensitive drums 27 inserts wherein.The rotation axis 27a of photosensitive drums 27 moves towards the least significant end position 55a slip of first guide rail 55, and photosensitive drums 27 is rotated supporting on this position.
A pair of second guide rail 56 is between first guide rail 55.The same with first guide rail 55, second guide rail 56 is also downward-sloping towards the rear end of shell 2.Different with first guide rail 55 is that the plane of opening wide is as second guide rail 56.Between second guide rail 56, form a photosensitive unit holding portion 57 that is used to hold photosensitive unit 26.In laser printer 1 that processing unit 17 is packed into, the rotation axis 27a of photosensitive drums 27 moves to lower slider along first guide rail 55.When rotation axis 27a had arrived the end 55a of first guide rail 55, the rear end of the photosensitive unit 26 of the installation moving axis 27a that rotates rotated.So, photosensitive unit 26 is located on the photosensitive unit holding portion 57.
As shown in Figure 6, supporting part 58 is positioned at the following with supporting photosensitive unit 26 of photosensitive unit holding portion 57.When photosensitive unit 26 is positioned on the photosensitive unit holding portion 57, be formed on seat part 26 beginnings and supporting part 58 adjacency of photosensitive unit diapire.
Said structure has been arranged, and when the photosensitive drums side was decided to be the front side, photosensitive unit 26 was loaded in the laser printer 1.The rotation axis 27a outwards outstanding from photosensitive drums 27 is inserted into first guide rail 55.The guide plate 60 that forms adjacent to rotation axis 27a is also along with rotation axis 27a slides along first guide rail 55.Under the left and right sides of photosensitive unit 26 and situation that second guide rail 56 contacts, processing unit 17 is oblique to be moved down.
When rotation axis 27a had arrived the end position of first guide rail 55, the photosensitive unit 26 and second guide rail 56 were thrown off.Therefore, the rear end part of photosensitive unit 26 moves down and is positioned on the photosensitive unit holding portion 57, here seat part 26d on photosensitive unit 26 bottom surfaces and supporting part 58 adjacency.So, photosensitive unit 26 is by 3 stable support, the just left and right sides of rotation axis 27a and supporting part 58, and can not make photosensitive unit 26 distortion.
As mentioned above, because rotating rear side (counter clockwise direction among Fig. 6) by the moving axis 27a that rotates, installs photosensitive unit 26, so photosensitive unit 26 is not easy to extract out from holding portion 57.Step part 59 is carved with near first guide rail, 55 least significant end 55a position.When the rear end of photosensitive unit 26 rotates moving axis 27a when rotating, tabular guide rail 60 beginnings engage with step part 59.
As shown in Figure 6 and Figure 7, torsion spring 66 is fixed to the position under second guide rail 56.Torsion spring 66 has a round end 66c and a pair of leg that extends from round end 66c. Annular foot section 66a, 66b are positioned at the end of leg, and it is respectively by pin 67,68 supportings.When photosensitive drums 26 was completely enclosed in the laser printer 1, the round end 66c of torsion spring 66 engaged with dimple 26c on being formed on photosensitive unit 26 rear walls, and photosensitive unit 26 is pushed to the end 55a of the image space or first guide rail 55.Because the biasing force of torsion spring 66, photosensitive unit 26 is firmly kept and is bearing on above-mentioned 3.
In order to unload photosensitive unit 26 from holding portion 57, the operator catches handle 65 and mentions box 26.Mention round end 66c and dimple 26c disengagement that box 26 causes torsion spring.For photosensitive unit 26 is unloaded fully, further mention photosensitive unit 26, upwards guide the rear end and photosensitive unit 26 slided along second guide rail 56 simultaneously to retreat.No matter whether developing cell 28 is combined on the photosensitive unit 26, the installation of photosensitive unit 26 and unloading can both be finished.That is to say that photosensitive unit 26 laser printer 1 neutralization of can packing into is individually unloaded from laser printer 1.
Next with reference to Fig. 4,5 and 7 pushing mechanism 70 is described.When photosensitive unit 26 and developing cell 28 were assembled in the laser printer 1, pushing mechanism 70 was just operated, because pushing mechanism is used to the developer roll 31 that is included in the developing cell 28 is shifted onto on the photosensitive drums 27 that is included in the photosensitive unit 26.
Pushing mechanism 70 is set between first guide rail 55 and second guide rail 56, comprises 72,73 and travel mechanisms 77 of a pair of clamping bar, and this travel mechanism 77 is used for another clamping bar 72 is shifted to and moved apart to a clamping bar 73.A teardrop shape copulational protuberance 71 that is formed on developing cell 28 each left side and right side wall rear portion is disposed between the clamping bar 72,73.Copulational protuberance 71 is by clamping bar 72,73 clampings, and such bias voltage, and promptly developer roll 31 is pulled on the photosensitive drums 27.
Clamping bar 72,73 is supported by pin 74,75 respectively, and pivots mobile around pin 74,75 respectively.One one end is fixed on the shell 2 and the other end is fixed to spring 76 applied thrust on clamping bar 73 of clamping bar 73 removable ends.Thereby clamping bar 73 is being pushed mobile counterclockwise and is clamping copulational protuberance 71 with another clamping bar 72.
Travel mechanism 77 comprises that a cam 78 and one are fixed with the cam lever 79 of this cam 78 on it.Thereby cam lever 79 is connected on the motor (not shown) and rotates.One end in contact of cam 78 and clamping bar 72, the movable terminal of pairing clamping bar 73 is shifted to and is moved apart in the rotation of cam 72 with regard to the opposite end that makes clamping bar 72 like this.Can will change manual translating cam bar 79 into by motor translating cam bar 79.
Processing unit 17 with the developing cell 28 that is combined on the photosensitive unit 26 can be packed in the laser printer 1.Equally, if photosensitive unit 26 has been contained in the laser printer 1, developing cell 28 also can be packed into separately in the laser printer 1.In the previous case, be installed in the end 55a of first guide rail 55 along with rotation axis 27a, when the rear end of photosensitive unit 26 rotates moving axis 27a when rotating, copulational protuberance 71 moves down and overcomes and pushes to match clamping bar 73 propelling power of spring 76 of clamping bar 72 to and be inserted between a pair of clamping bar 72,73.At this moment, the upper end of clamping bar 72 has moved on to the free end of clamping bar 73.In the case, when the developing cell 28 that inserts when the roll shaft 31a that is positioned at box gathering sill 61 end developer rolls 31 rotates, copulational protuberance 71 moves down and enters between a pair of clamping bar 72,73.
As shown in Figure 5, when photosensitive unit 26 was contained in the holding portion 57, the roll shaft 31a of developer roll 31 was positioned at the end that is formed on the gathering sill 61 on photosensitive unit 26 sidewalls.At this moment, roll shaft 31a is positioned on the line of the rotation axis 27a that connects photosensitive drums 27 and copulational protuberance 71 or along this line.Therefore, copulational protuberance 71 identical track when the assembled unit with photosensitive unit 26 and developing cell 28 moves down and only developing cell 28 moves down basically.So, shown in double dot dash line among Fig. 7, assembled unit just can be packed into and unloads from holding portion 57.Equally, shown in solid line among Fig. 7, when photosensitive unit 26 remains in the holding portion 57, have only developing cell 28 to pack into and unload from holding portion 57.
In printing, thereby motor drives rotating cam 78 by a controller (not shown).Along with the small diameter portion of cam 78 and the abut lower of clamping bar 72, photosensitive drums 27 is shifted on the top of clamping bar 72.Simultaneously, because the biasing force of spring 76, clamping bar 73 is pushed copulational protuberance 71 to photosensitive drums 27.As a result, developer roll 31 just is pulled on the outside surface of photosensitive drums 27.
When not printing operation, the large-diameter portion of cam 78 is divided the abut lower of beginning with clamping bar 72, thereby makes the top of hack lever 72 move apart photosensitive drums 27.Therefore, copulational protuberance 71 and developing cell 28 can be shunk back, and the developer roll 31 of developing cell 28 can separate with photosensitive drums 27.
Above-mentioned layout has been arranged, and by being installed on the developing cell holding portion of photosensitive unit 26 in the groove that developing cell 28 is inserted photosensitive unit 26 and with it, developing cell 28 and photosensitive unit 26 can be in the synthetic single unit of printer outer set.In addition, assembled unit laser printer 1 neutralization of easily packing into is unloaded from it.In addition, only developing cell 28 can be packed in the laser printer 1, is installed in laser printer on the photosensitive unit 26 of fix in position, and unloads from photosensitive unit 26 when photosensitive unit 26 is stayed laser printer 1 inside.
The roll shaft 31a of developer roll 31 and the rotation axis 27a of photosensitive drums 27 are 26 and 28 outstanding from the unit respectively, and are rotated by shaft coupling and a drive gear mechanism by a CD-ROM drive motor (not shown) that is arranged in shell 2.Make photosensitive unit 26 and developing cell 28 shift to its holding portion if rotational motion is passed to rotation axis 31a and rotation axis 27a (among Fig. 2 counterclockwise or towards the direction of holding portion 57 bottoms) thereby goes up, moving direction is just consistent with the motion that weight produced of each unit 26,28.Therefore, unit 26,28 just stably is fixed in its holding portion.
As shown in Figure 4, in processing unit 17 and holding portion 57, be provided with attachment.Specifically, projection 80 is formed on the precalculated position of holding portion 57.A projection holding portion 81 is formed on the bottom surface of processing unit 17, so that projection 80 is contacted with projection holding portion 81.Owing in processing unit 17, be provided with projection holding portion 81, do not have projection holding portion or projection holding portion just can not suitably be contained in the holding portion 57 from the unsuitable processing unit of tram skew.Projection 80 can be formed on the bottom surface of processing unit 17, and projection holding portion 81 can be formed on the holding portion 57.
Though describe the present invention in detail with reference to its specific embodiment, but for a person skilled in the art, can find out significantly that can carry out various variations and remodeling and not break away from spirit of the present invention it, scope of the present invention be limited by additional claims.
For example, replace the rotation axis of photosensitive drums the axis of guide as printer that photosensitive unit is packed into, a pair of projection be formed on sidewall outside surface and can be used as the axis of guide.In this case, the rotation axis of wishing this projection and photosensitive drums on the longitudinal axis direction of axle in line.Also is correct with a pair of projection as the axis of guide that developing cell is installed on photosensitive unit.

Claims (45)

1, a kind of imaging device comprises:
A shell (2);
A pair of first guide rail (55) that extends downwardly into end (55a);
Processing unit (17) with a guide rod (27a), the two ends of this guide rod (27a) can engage first guide rail (55) with this, when shell (2) that this processing unit (17) is packed into was middle, guide rod (27a) was along leading towards this end (55a) downwards to first guide rail (55);
A processing unit holding portion (57) is used for accepting and holding this processing unit (17);
A pair of second guide rail (56), be formed on this between first guide rail (55), be used for the head room clearance guiding end (55a) of this processing unit (17) from shell (2), it is characterized in that, when the two ends of the guide rod (27a) of this processing unit (17) with end (55a) adjacency, and when rotating, processing unit (17) is contained in the processing unit holding portion (57) around guide rail (27a) in the rear end of processing unit (17).
2, imaging device according to claim 1, also comprise a posture keeper (26d), this posture keeper is formed on the processing unit (17), is used for keeping when processing unit (17) is contained in processing unit holding portion (57) posture of processing unit (17).
3, imaging device according to claim 1 and 2, it is characterized in that, should be to each U-lag shape of first guide rail (55) for prolonging, each end of guide rod (27a) inserts wherein, each of being somebody's turn to do second guide rail (56) is the trade shape with last plane, and processing unit (17) can slide along it and move.
4, imaging device according to claim 1 comprises also being used for processing unit (17) is locked to locking member (66) on the shell (2) that this locking member (66) is arranged in processing unit holding portion (57).
5, imaging device according to claim 4 is characterized in that, the rear end resilient engagement of this locking member (66) and processing unit (17).
6, imaging device according to claim 1, it is characterized in that, this processing unit (17) comprises a photosensitive unit (26) and a developing cell (28) that detachably is installed on this photosensitive unit (26), this photosensitive unit (26) comprises a photosensitive drums (27), and this developing cell (28) comprises a developer roll (31).
7, imaging device according to claim 6 is characterized in that, this guide rod (27a) is set on this photosensitive unit (26).
8, imaging device according to claim 7 is characterized in that, this photosensitive drums (27) has a rotation axis, and this rotation axis is as guide rod (27a).
9, imaging device according to claim 1 is characterized in that, also comprises closed block (80,81), is used for processing unit (17) is locked to processing unit holding portion (57).
10, imaging device according to claim 1 is characterized in that, when a predetermined direction promotes, this processing unit (17) is accommodated in the processing unit holding portion (57).
11, imaging device according to claim 1, it is characterized in that, this processing unit (17) is formed with an auxiliary guide (60), when processing unit (17) being packed into shell (2) or from shell (2) when unloading, is used for determining the installation or the uninstall direction of processing unit (17).
12, imaging device according to claim 6, it is characterized in that, this developing cell (28) has a bottom surface, a prime keeper (28c) forms thereon, be used for being installed in the posture that keeps developing cell (28) when photosensitive unit (26) is gone up when developing cell (28), this photosensitive unit (26) has a bottom surface, a second keeper (26d) forms thereon, be used for keeping when photosensitive unit (26) is contained in processing unit holding portion (57) posture of photosensitive unit (26), wherein prime keeper (28c) and second keeper (26d) closely cooperate mutually.
13, a kind of imaging device comprises:
A shell (2) has pair of straight wall (2b), and each upstanding wall is formed with one first guide rail (55) and extends to a first end (55a);
A processing unit (17) that detachably is installed on the shell (2), this processing unit (17) comprises a photosensitive unit (26) and a developing cell (28), this photosensitive unit (26) has a photosensitive drums (27) and one first guide rod (27a), two ends of this first guide rod (27a) can engage with first guide rail (55), when processing unit (17) is packed in the shell (2), first guide rod (27a) is along first guide rail (55) first end (55a) that leads downwards, and developing cell (28) has a developer roll (31);
A processing unit holding portion (57) is when the rear end of processing unit (17) is used for accepting and holding processing unit (17) around first guide rod (27a) that is positioned at first end (55a) when rotating;
Developer roll moving member (70) is used for developer roll (31) is shifted to photosensitive drums (27), so that developer roll (31) is shifted onto on the photosensitive drums (27).
14, imaging device according to claim 13, it is characterized in that, when this photosensitive unit (26) when the head room clearance of shell (2) is packed into the shell (2), photosensitive unit (26) is detachably mounted on the processing unit holding portion (57), and this developing cell (28) is detachably mounted on the photosensitive unit (26) of processing unit holding portion (57).
15, imaging device according to claim 14, it is characterized in that, this developing cell (28) is formed with a copulational protuberance (71), and when this processing unit (17) was accommodated in the processing unit holding portion (57), copulational protuberance (71) beginning engaged with developer roll moving member (70).
16, imaging device according to claim 15, it is characterized in that, this developing cell (28) has one second guide rod (31a) and a pair of gathering sill (61) that is formed in the photosensitive unit (26), this extends near the second end (56a) the first end (55a) and the two ends of second guide rod (31a) is directed to the second end (56a) gathering sill (61), wherein, when the rear end of developing cell (28) around second guide rod (31a) that is positioned at the second end (56a) when rotating, copulational protuberance (71) beginning engages with developer roll moving member (70).
17, imaging device according to claim 15 also comprises a developer roll separation member (72,77), is used for developer roll (31) is moved apart photosensitive drums (27).
18, imaging device according to claim 17 also comprises the holder that is used for clamping copulational protuberance (71), and this holder comprises developer roll moving member (70) and developer roll separation member (72,77).
19, imaging device according to claim 17, also comprise the holder that is used for clamping copulational protuberance (71), this holder comprises that one has first holder (73) of one first movable terminal, with second holder (72) with one second movable terminal, when this first movable terminal and second movable terminal are mobile in opposite directions, copulational protuberance (71) is held, when this first movable terminal and second movable terminal when mobile, form a space between first movable terminal and second movable terminal.
20, imaging device according to claim 19, it is characterized in that, this developer roll moving member (70) comprises an impeller (76), this impeller is pushed first holder (73) to second holder (72), thereby developer roll (31) is shifted onto on the photosensitive drums (27), and developer roll separation member (72,77) comprises a moving member (78,79), and it makes second holder (72) move to first holder (73), thereby makes developer roll (31) move apart photosensitive drums (27).
21, imaging device according to claim 20, it is characterized in that, this developing cell (28) has pair of sidewalls, be formed with copulational protuberance (71) on each sidewall, be provided with developer roll moving member (70) and developer roll separation member (72,77) in this each side, so that engage with the copulational protuberance (71) that forms in each sidewall that is formed on this oppose side wall of developing cell (28) to upstanding wall.
22, imaging device according to claim 13, it is characterized in that, this shell (2) is formed with a pair of second guide rail (56) between first guide rail (55), be used for the head room clearance guiding processing unit holding portion (57) of processing unit (17) from shell (2).
23, imaging device according to claim 13 is characterized in that, this first guide rod (27a) is a rotation axis of photosensitive drums (27), and the rotation axis that this second guide rod (31a) is a developer roll (31).
24, a kind of imaging device comprises:
Shell (2) with the first side wall (2b);
A photosensitive unit (26) has second sidewall (26e), a photosensitive drums (27) and one from outstanding first guide rod (27a) of this second sidewall (26e);
A developing cell (28) has the 3rd sidewall (28e), a developer roll (31) and one from outstanding second guide rod (31a) of the 3rd sidewall (28e), and this developing cell (28) is removably mounted on the photosensitive unit (26);
A pair of first guide rail (55), each first guide rail is formed in each the first side wall (2b) and extends to first end (55a), be used for when with photosensitive unit (26) when the head room clearance of shell (2) is packed shell (2) into, with first guide rod (27a) guiding first end (55a);
A photosensitive unit holding portion (57) is used for rear end when photosensitive unit (26) around first guide rod (27a) that is positioned at first end (55a) when rotating, and accepts and holds photosensitive unit (26); With
A pair of gathering sill (61), each gathering sill is formed in each second sidewall (26e) and extends to the second end (56a), be used for second guide rod (31a) guiding the second end (56a), photosensitive unit (26) has a developing cell mounting portion, when developing cell (28) arrives the second end (56a) and packs into the shell (2) to gathering sill (61) along this from the head room clearance of shell (2), developing cell (28) is installed thereon, and this forms gathering sill (61) with this basically abreast to first guide rail (55).
25, imaging device according to claim 24 is characterized in that, photosensitive unit (26) is provided with locking member (62), and the developing cell (28) that is used for being installed in the developing cell mounting portion is locked to photosensitive unit (26).
26, imaging device according to claim 25 is characterized in that, is provided with described locking member (62) on the rear wall of photosensitive unit (26), and this rear wall is away from photosensitive drums (27).
27, imaging device according to claim 26, it is characterized in that, this locking member (62) has a locked position, be used for developing cell (28) is locked to the photosensitive unit (26) that is contained in photosensitive unit holding portion (57), with a lockset position of coupler, be used for developing cell (28) is unlocked from the photosensitive unit (26) that is contained in photosensitive unit holding portion (57).
According to each described imaging device in the claim 24 to 27, it is characterized in that 28, when two ends of second guide rod (31a) were arranged in the second end (56a), developing cell (28) can pivot around second guide rod (31a) and move.
29,, also comprise being used for shifting developer roll (31) onto on the photosensitive drums (27) developer roll moving member (70,71) according to each described imaging device in the claim 24 to 27.
30, imaging device according to claim 29, it is characterized in that, first guide rod (27a) is a rotation axis of photosensitive drums (27), and second guide rod (31a) is a rotation axis of developer roll (31), and wherein the center of second guide rod (31a) is located substantially on the imaginary line of the center of connection first guide rod (27a) and the point that developer roll moving member (70,71) promotes developing cell (28).
31, imaging device according to claim 30, it is characterized in that, developing cell (28) is formed with a copulational protuberance (71), when the rear end of the photosensitive unit (26) that has the developing cell (28) that is installed in the developing cell mounting portion when first guide rod (27a) that is positioned at first end (55a) rotates, this copulational protuberance (71) beginning engages with developer roll moving member (70).
32, imaging device according to claim 31 is characterized in that, this copulational protuberance (71) is formed in each the 3rd sidewall (28e).
33, a kind of photosensitive unit, its can pack into imaging device and pull down from imaging device, this imaging device comprises a shell (2) with pair of straight wall (2b), pair of guide rails (55), each guide rail (55) is formed on this on each of upstanding wall (2b), guide rail (55) extends downwardly into an end (55a) and a photosensitive unit holding portion (57), and this photosensitive unit comprises:
Housing with pair of sidewalls;
A rotatable photosensitive drums (27) that is arranged in this housing; With
A guide rod (27a), have two ends, each end is outstanding from each of this oppose side wall, two ends of this guide rod (27a) can engage guide rail (55) with this, two ends of this guide rod (27a) along this to guide rail (55) end (55a) of leading downwards, it is characterized in that, when two ends of this guide rod (27a) contacted with end (55a) and the rear end of this housing around guide rod (27a) when rotating, this housing is contained in the photosensitive unit holding portion (57).
34, photosensitive unit according to claim 33 is characterized in that, this photosensitive drums (27) has a rotation axis, and this rotation axis is used as guide rod (27a).
35, according to claim 33 or 34 described photosensitive units, also comprise auxiliary guide, each auxiliary guide is outstanding from each of this oppose side wall, be used for when described photosensitive unit being packed into housing and when housing unloads, (27a) cooperates with guide rod, determines the installation direction and the disassembly direction of housing.
36, photosensitive unit according to claim 35 is characterized in that, this housing has a developing cell mounting portion between this oppose side wall.
37, photosensitive unit according to claim 36 is characterized in that, each of this oppose side wall is formed with a gathering sill, is used for a developing cell guiding is installed in this developing cell mounting portion.
38, a kind of developing cell, can be contained in photosensitive unit (26) goes up and pulls down from photosensitive unit (26), this photosensitive unit (26) has a photosensitive drums (27), a pair of guide rail (61) and developing cell mounting portion that extends downwardly into end (56a), and this developing cell comprises:
Housing with pair of sidewalls;
A rotatable developer roll (31) that is arranged in the housing;
A guide rod (31a), have two ends, each end is outstanding from each of this oppose side wall, two ends of this guide rod (31a) can engage guide rail (61) with this, two ends of this guide rod (31a) along this to guide rail (61) end (56a) of leading downwards, it is characterized in that, when two ends of guide rod (31a) with end (56a) in abutting connection with and the rear end of housing around guide rod (31a) when rotating, this housing is installed in the developing cell mounting portion.
According to the described developing cell of claim 38, it is characterized in that 39, when this housing was installed in the developing cell mounting portion, photosensitive drums (27) can be shifted to and move apart to developer roll (31).
According to the described developing cell of claim 38, it is characterized in that 40, when photosensitive unit (26) was contained in the imaging device, this housing can be installed on the developing cell mounting portion.
41, according to the described developing cell of claim 40, also comprise one from the outstanding copulational protuberance (71) of this housing, wherein when this housing is installed in the developing cell mounting portion, copulational protuberance (71) engages with a pushing mechanism (70) in being arranged on imaging device, and this pushing mechanism (70) is pushed this housing to photosensitive unit (26).
According to each described developing cell in the claim 38 to 41, it is characterized in that 42, developer roll (31) has a roll shaft, this roll shaft (31a) is used as guide rod (31a).
43, a kind of processing unit, it comprises:
A sensitization housing, this housing has pair of sidewalls, is formed with a gathering sill that extends downwardly into an end (56a) on each sidewall of this oppose side wall;
A photosensitive drums (27) that is arranged in rotationally in this sensitization housing;
A developing cell mounting portion is formed between this oppose side wall of sensitization housing;
A development housing, this housing have pair of sidewalls and a diapire;
A developer roll (31) is arranged in the development housing rotationally;
A guide rod (31a) has two ends, and each end is outstanding from each sidewall of this oppose side wall of development housing, two ends of guide rod (31a) can with end (56a) rotational engagement, the housing that wherein develops is installed on the developing cell mounting portion.
44, according to the described processing unit of claim 43, also comprise the difference part that is used for the differentiated treatment cell type, this difference part is used to determine the processing unit imaging device of whether correctly packing into by imaging device.
45, according to the described processing unit of claim 43, it is characterized in that,, the development housing can be disassembled from the developing cell mounting portion by mentioning guide rod along gathering sill.
CNB021606447A 2001-09-13 2002-09-13 Imaging device and treating unit thereof Expired - Lifetime CN100451857C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2001277605A JP2003084645A (en) 2001-09-13 2001-09-13 Image forming apparatus and photoreceptor unit
JP2001277606A JP2003084648A (en) 2001-09-13 2001-09-13 Apparatus for forming image and photoreceptor unit
JP2001277604 2001-09-13
JP2001277604A JP2003084647A (en) 2001-09-13 2001-09-13 Image forming apparatus and development unit
JP2001277606 2001-09-13
JP2001277605 2001-09-13

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CN100451857C CN100451857C (en) 2009-01-14

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CN2627544Y (en) 2004-07-21
CN100451857C (en) 2009-01-14
HK1055803A1 (en) 2004-01-21
EP1293848B1 (en) 2019-11-06
EP1293848A2 (en) 2003-03-19

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