CN100351711C - Optical writing unit and image forming apparatus - Google Patents
Optical writing unit and image forming apparatus Download PDFInfo
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- CN100351711C CN100351711C CNB2005100814091A CN200510081409A CN100351711C CN 100351711 C CN100351711 C CN 100351711C CN B2005100814091 A CNB2005100814091 A CN B2005100814091A CN 200510081409 A CN200510081409 A CN 200510081409A CN 100351711 C CN100351711 C CN 100351711C
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Abstract
An optical writing unit for use in an image forming apparatus, wherein the optical writing unit includes an optical system which generates a light beam to write an electrostatic latent image on an image carrying member of the image forming apparatus, and a casing which encases the optical system. The casing includes an opening portion and a transparent member which externally seals the opening portion and has a top surface higher than a surface of the casing with a predetermined height and an optical writing area through which the light beam emits.
Description
Technical field
The present invention relates to make beam deflection scan, sub-image is write the optical writing device that looks like the mounting body by light-deflection apparatus, and the image processing system that uses this optical writing device.
Background technology
In optical writing device, according to the image signal modulation light beam, light beam passes through optical system, through the such inflector assembly of polygonal mirror to scanning as the face that is scanned as the photoreceptor of mounting body, carry out image recording, this optical writing device is widely used in digital copier, facsimile recorder, the write section of the image processing system that printer is such.
On the other hand, along with the miniaturization of image processing system, the configuration of the optical writing device in the image processing system presents variation, optical writing device can be configured to and the roughly same horizontal level of picture mounting body, or be configured in the below of picture mounting body.This occasion, the dust in the image processing system or can be attached on the dustproof glass as the toner of developer etc., above-mentioned dustproof glass are located on the exit wound of bullet of light beam of optical writing device, like this, can block light beam, and the low problem of picture quality easily takes place.Especially in the image processing system that uses polymerization toner, the toner that disperses can be attached on the interior component parts of device, is difficult to remove.
So; open among the 2002-267983 (following brief note is " patent documentation 1 ") for example spy; in the dustproof glass portion of the light beam exit wound of bullet of optical writing device, loading and unloading are provided with dust cap freely, so that make foreign matters such as the dust or the toner that disperses be not adhered on the dustproof glass.Even foreign matters such as the dust or the toner that disperses are attached to the dustproof glass occasion, unload dust cap, the cleaning dustproof glass perhaps is provided with cleaning mechanism in addition, takes out this cleaning mechanism, the cleaning dustproof glass.
But, in above-mentioned prior art, need be used to be provided with the space of dust cap, so that dust cap is arranged in the dustproof glass portion with loading and unloading easily, therefore, become hindering of miniaturization.Have, dust cap can not prevent dust fully or foreign matter such as the toner that disperses adheres to, and for being attached to the dust on the dustproof glass or the toner that disperses, needs operations such as wiping dustproof glass face again.
On the other hand, along with the increase of image formation number, and the development of high speed, in device, produce heat problem.That is,, can bring influence, form in the device, with the naked eye can observe defectives such as color shift at coloured image to optical system if built-in temperature rises.So, in order to weaken heat affecting, make fixing device be positioned at device top, make the heating of fixing device be difficult for influencing optical writing device or image-forming assembly.In this image processing system, light writes assembly and is positioned under the image-forming assembly, and the light that photoreceptor is carried out up writes.But if like this configuration, then dustproof glass becomes up, is attached to the dust on the dustproof glass or the toner that disperses can not be peeled off naturally, especially adheres to occasion when above-mentioned polymerization toner spherical in shape, is not easy cleaning.
Summary of the invention
The present invention puts forward for solving the existing problem of above-mentioned prior art; the objective of the invention is to; the optical writing device that can clean reliably attached to foreign matters such as the dust on the dustproof glass or the toners that disperses is provided, and the image processing system that uses this optical writing device.
In order to implement above-mentioned purpose, the present invention proposes a kind of optical writing device, by the feasible beam deflection of inflector assembly according to image signal modulation, light transmission dust proof member on being located at housing injects to outside the housing, write sub-image at the face that is scanned as the mounting body, wherein: be provided with guiding parts,, the cleaner of the face in the outside that is used to clean described light transmission dust proof member led along the length direction of described light transmission dust proof member; The support unit that described cleaner is provided with cleaning part and supports this cleaning part, the face in the outside of described cleaning part and described light transmission dust proof member slips, and cleaning is attached to foreign matters such as dust on the face in this outside or toners; Described cleaning part is installed in the front of described support unit, along the cleaning direction, is provided with bend at the upstream side of the described cleaning part installation portion of described support unit; The face in the outside of described light transmission dust proof member is outstanding laterally near the outside of the above-mentioned housing the installation portion of this light transmission dust proof member.
In addition, the invention still further relates to following scheme:
(1) a kind of optical writing device makes that by inflector assembly the light transmission dust proof member on being located at housing injects to outside the housing, writes sub-image at the face that is scanned as the mounting body, it is characterized in that according to the beam deflection of image signal modulation:
The face in the outside of described light transmission dust proof member is outstanding laterally near the outside of the above-mentioned housing the installation portion of this light transmission dust proof member.
(2) in above-mentioned (1) described optical writing device, it is characterized in that, be provided with guiding parts,, the cleaner of the face in the outside that is used to clean described light transmission dust proof member is led along the length direction of described light transmission dust proof member.
(3) in above-mentioned (2) described optical writing device; it is characterized in that; the support unit that described cleaner is provided with cleaning part and supports this cleaning part; the face in the outside of described cleaning part and described light transmission dust proof member slips, and cleaning is attached to foreign matters such as dust on the face in this outside or toners.
(4) in above-mentioned (3) described optical writing device, it is characterized in that described cleaning part is made of scraper plate, it wipes foreign matters such as dust or toner with edge portion.
(5) in above-mentioned (3) or (4) described optical writing device, it is characterized in that described cleaning part is installed in the front of described support unit,, be provided with bend at the upstream side of the described cleaning part installation portion of described support unit along the cleaning direction.
(6) in above-mentioned (5) described optical writing device, it is characterized in that described bend is made as: from the described cleaning part of described support unit, institute's certain portions of rear side becomes convex.
In above-mentioned (6) described optical writing device, it is characterized in that (7) described protruding part forms as one as circular-arc bulge.
In above-mentioned (6) described optical writing device, it is characterized in that (8) described protruding part is made of the leaf spring of bending.
In any described optical writing device, it is characterized in that in above-mentioned (5)-(8) that (9) be directed to when mobile by described guiding parts, the leading section and the guiding parts of described support unit leave usually.
(10) in above-mentioned (1)-(9) in any described optical writing device, it is characterized in that, the overhang of the outside of the described relatively housing of face in the described light transmission dust proof member outside is made as X, and the thickness of described light transmission dust proof member is made as t, sets to have the following formula relation:
0＜X＜t。
In any described optical writing device, it is characterized in that in above-mentioned (1)-(9) that (11) described light transmission dust proof member installed surface is positioned at from outstanding position (t1＞0), the outside of described housing, and described light transmission dust proof member is installed on this installed surface.
(12) in above-mentioned (11) described optical writing device, it is characterized in that, described cleaning part is set in the outside occasion of described housing towards the starting position of cleaning direction when moving, the overhang of the face in the outside of the described light transmission dust proof member of described starting position side is made as X, sets to have the following formula relation: X≤0.
This scheme (12) is in above-mentioned (10) and (11) described optical writing device, the face in the outside of described light transmission dust proof member is outstanding from the housing outside, but, described cleaning part is towards the cleaning direction when moving, and the part of the outside of the described housing of starting position side also can be in same level with the face in the outside of described light transmission dust proof member.
(13) in above-mentioned (1)-(12) in any described optical writing device, it is characterized in that described cleaning part is set between the scanning starting position of the end of the peristome that described light transmission dust proof member is installed and described light beam towards the starting position of cleaning direction when moving.
(14) in above-mentioned (1)-(12) in any described optical writing device, it is characterized in that, size with length direction orthogonal direction described light transmission dust proof member described cleaning part is littler than the size with length direction orthogonal direction of described light transmission dust proof member, and is bigger than the equidirectional size of the peristome that described light transmission dust proof member is installed.
(15) in above-mentioned (1)-(14), in any described optical writing device, it is characterized in that the face in the outside of described light transmission dust proof member is made as up.
(16) a kind of image processing system comprises:
Any described optical writing device in above-mentioned (1)-(15);
Image forming part by described optical writing device, writes image on as the mounting body, this image recording is exported as visual image on recording medium.
(17) in above-mentioned (16) described image processing system, it is characterized in that:
Described image forming part is arranged on and height and position more than the same level of described optical writing device.
According to the present invention, make near the relative light transmission dust proof member of the face installation portion in the light transmission dust proof member outside the face in the outside of optical writing device housing outstanding, during cleaning, the face of hull outside can not become hindering of cleaning, can improve and clean effect.
Description of drawings
Fig. 1 is that the summary of the optical writing device that relates to of first embodiment of the invention constitutes and the longitudinal section of photoconductor drum;
The outward appearance oblique view of the optical writing device in Fig. 2 presentation graphs 1;
Fig. 3 represents to be provided with the summary pie graph of image processing system integral body of the optical writing device of Fig. 1;
Fig. 4 is the summary pie graph of the image processing system imaging portion of Fig. 3;
The major part amplification oblique drawing of the mounting structure of the relative upper body of the dustproof glass of the optical writing device of Fig. 5 presentation graphs 2;
The dustproof glass of the optical writing device of Fig. 6 A and Fig. 6 B presentation graphs 5, external shell, the front view (FV) that concerns between the cleaning part, wherein, Fig. 6 A is the width dimensions of the cleaning part example bigger than dustproof glass width dimensions, and Fig. 6 B is the width dimensions of the cleaning part example littler than dustproof glass width dimensions;
Cleaner when Fig. 7 A represents to clean, housing concerns between the dustproof glass, the 7B-7B line sectional view of Fig. 7 B presentation graphs 7A;
Cleaning part action diagram when Fig. 8 represents to clean;
Fig. 9 represents the key diagram that concerns between dustproof glass thickness of slab and the overhang;
Figure 10 represents dustproof glass, external shell, graph of a relation between the cleaning part;
Figure 11 represents the key diagram of other relation between dustproof glass thickness of slab and the overhang;
The example that Figure 12 represents to use the cleaning part beyond the scraper plate to clean;
The example that the cleaner that Figure 13 A represents to use second embodiment of the invention to relate to cleans, Figure 13 B represents the constitutional diagram of taking out slightly from Figure 13 A condition, Figure 13 C represents the constitutional diagram of taking out slightly from Figure 13 B state, the 13D-13D line sectional view of Figure 13 D presentation graphs 13C;
Figure 14 A represents the variation of the cleaner that second embodiment of the invention relates to;
Figure 14 B represents another variation of the cleaner that second embodiment of the invention relates to.
Embodiment
Below, present invention will be described in detail with reference to the accompanying embodiment.
First embodiment
Fig. 1 is that the summary of the optical writing device that relates to of first embodiment of the invention (following brief note is " light writes assembly ") constitutes and the longitudinal section of photoconductor drum, and the light in Fig. 2 presentation graphs 1 writes the outward appearance oblique view of assembly.
In this first embodiment, light writes assembly 300 and is used for the tandem image processing system, so that form coloured image.As some photoconductor drum 9a of picture mounting body, 9b, 9c, 9d is set up in parallel, and above-mentioned photoconductor drum is write image by look.In example shown in Figure 1, photoconductor drum 9a, 9b, 9c, among the 9d, photoconductor drum 9a goes up and forms and yellow (following brief note is " Y ") corresponding image, and photoconductor drum 9b goes up and forms and the corresponding image of magenta (following brief note is " M "), photoconductor drum 9c goes up and forms and the corresponding image of cyan (following brief note is " C "), and photoconductor drum 9d goes up and forms and the corresponding image of black (following brief note is " K ").Be not limited to above-mentioned look order, this is arbitrarily in proper order.At each photoconductor drum 9a, 9b, 9c, the peripheral part of 9d, configuration forms the known image-forming block of image necessity for the electrofax mode.
Light writes assembly 300 and is configured in above-mentioned four photoconductor drum 9a that are set up in parallel, 9b, 9c, the below of the formed imaging of 9d portion, it comprises: with the light source assembly 21a of four laser diodes formations, 21b, 21c, 21d (with reference to Fig. 2) is with two polygonal mirror 1a up and down, the light deflector of the conduct light deflection means that 1b constitutes, and transmit imaging optical system.From described light source assembly 21a, 21b, 21c, 21d sends light beam, and described light deflector with this light beam towards symmetrical 2 directions separately carries out deflection scanning.Described transmission imaging optical system is by f θ lens 3a, 3b, and imaging lens 5a, 5b, 5c, 5d, light path is turned back and is used reflective mirror 4a, 4b, 4c, 4d, 6a, 6b, 6c, 6d, 7a, 7b, 7c, optical elements such as 7d constitute.Described transmission imaging optical system is that the center is configured in 2 directions symmetrically with described light deflector, its pairing photoconductor drum 9a that will lead respectively by some light beams of light deflector deflection, and 9b, 9c, 9d is scanned on the face and imaging.Above-mentioned each component parts is accommodated in the housing 10.
Light writes assembly will be from original document reading apparatus (not diagram), or personal computer, word processor, the view data of decomposing through look of image-data output devices such as the acceptance division of facsimile recorder input is transformed into light source driving signal, according to the laser beam of this signal output to described photoconductor drum 9a, 9b, 9c, 9d carries out photoscanning, carries out light and writes.At this moment, from each light source assembly 21a, 21b, 21c, the light beam that 21d penetrates arrives polygonal mirror 1a, 1b, each 2 light beam is symmetrically towards 2 direction deflection scannings.In structure shown in Figure 1, polygonal mirror 1a, 1b is used to write photoconductor drum 9a for being divided into, the light beam 14a of 9b, 14b usefulness, and be used to write photoconductor drum 9b, the light beam 14b of 9c, the two sections structure that 14c uses, but also can carry out deflection scanning with four light beams with a thick vertically polygonal mirror.
Fig. 3 represents to be provided with the summary pie graph of image processing system integral body of the optical writing device of Fig. 1 and Fig. 2, and Fig. 4 is the summary pie graph of the image processing system imaging portion of Fig. 3.
In Fig. 3, image processing system 100 is by paper supply assembly 200, and light writes assembly 300, image-forming assembly 400, and photographic fixing assembly 510, row's paper assembly 520 constitutes.Form from the bottom towards top order stack layer.Paper supply assembly 200 is provided with two-layer paper feeding cassette 210,211, separates paper by more than of paper feed rollers ground and sends, and this paper of sending transports passage 220 and is sent to image-forming assembly 400 along vertical.Image-forming assembly 400 is corresponding with described imaging portion.
Described light writes assembly 300 at photoconductor drum 9a, 9b, and 9c writes sub-image on the 9d, and image-forming assembly 400 makes that this sub-image is visual, and transfer printing is exported as visual image on paper.As shown in Figure 4, image-forming assembly 400 is by photoconductor drum 9a, 9b, and 9c, 9d and be configured in each photoconductor drum 9a, 9b, 9c, the described image-forming block of 9d peripheral part constitutes.Described image-forming block is to handle the parts that form image by electrofax, and it comprises charging part, exposure portion 410, and development section 420, primary transfer portion, cleaning section, electric portion disappears.Described charging part is made of charging roller or charging brush or charger etc.Described exposure portion 410 exposes by the light beam that writes assembly 300 from light and penetrate.Development section 420 is by Y, M, and C, K developing apparatus of all kinds constitutes.Transfer printing is distinguished on intermediate transfer belt 430 with the four colour toners images that described development section 420 develops by primary transfer portion.Cleaning section is removed and is remained in each photoconductor drum 9a, 9b, 9c, the toner on the 9d.The electric portion electricity that disappears that disappears forms the preceding operation of charging when handling as image after this.In the present embodiment, charging part, cleaning section, disappear electric portion and photoconductor drum are as light sensitive body assembly 440, and development section 420 can be changed respectively as developing device.
Described transfer printing on the intermediate transfer belt 430, the superimposed coloured image of four-color image transporting from described sheet feed section 200 in 450 transfer printings of secondary transfer printing portion on the paper that comes, photographic fixing assembly 510 photographic fixing are up arranged paper to row's paper platform 540 from the ejection port 530 of row's paper assembly 520.Also be provided with cleaning section (not diagram) in image-forming assembly 400, after 450 transfer printings of described secondary transfer printing portion, the toner that remains on the described intermediate transfer belt 430 is removed by this cleaning section.The above-mentioned known configurations that constitutes describes in detail and omits.In Fig. 4, except photoreceptor, symbol of all kinds omits.
Fig. 5 represents the major part amplification oblique drawing of the mounting structure of the relative upper body 10a of dustproof glass 8a, the dustproof glass of the optical writing device of Fig. 6 A and Fig. 6 B presentation graphs 5, external shell, the front view (FV) that concerns between the cleaning part, wherein, Fig. 6 A is the width dimensions of the cleaning part example bigger than dustproof glass width dimensions, and Fig. 6 B is the width dimensions of the cleaning part example littler than dustproof glass width dimensions.
In Fig. 5, only represent dustproof glass 8a, but other dustproof glass 8b shown in Figure 2,8c, 8d are too.
Shown in Figure 6 as Fig. 5 cross-sectional view, dustproof glass 8a installs outside housing, is used to stop up the opening 31a that passes through the hole as light beam 14a that is formed on the above-mentioned housing 10a.The installation of dustproof glass 8a can stick on the outer rim of above-mentioned opening 31a by for example two sides adhesive tape.The lateral surface 8a1 of dustproof glass 8a is being held, outstanding from the lateral surface (installed surface) of upper body 10a, not harmed by the installed surface of upper body 10a, cleaner 32 contacts with the lateral surface 8a1 of dustproof glass 8a, wipes the dirty dirty of this face by this cleaner 32.
Cleaner when Fig. 7 A represents to clean, housing concerns between the dustproof glass, shown in Fig. 7 A, cleaner 32 is by cleaning part 32A, support unit 32B, handgrip 32C constitutes.Described support unit 32B is tabular in a narrow margin, and its leading section is installed with described cleaning part 32A, and described handgrip 32C is located at the base end part side of this support unit 32B.Can use scraper plate such shown in Fig. 7 A, perhaps such brush shown in the embodiment of back, felt, sponges etc. are as described cleaning part 32A.Wherein,, use the 32Ae of its edge portion (with reference to Fig. 8), can obtain the best cleaning effect of efficient if use by synthetic resin material (it also is used for photoreceptor and the intermediate transfer body) scraper plate that constitutes of Desmocoll sheet material for example.The following describes the configuration example that constitutes cleaning part 32A with scraper plate.
The width of the scraper plate 32A of described cleaner 32 as shown in Figure 6A, can be made as the width dimensions H that can clean whole of dustproof glass 8a, and is still, shown in Fig. 6 B, if can guarantee width H3, even then the width dimensions H1 than dustproof glass 8a is little, also enough.Above-mentioned width H3 is meant error is taken into account, only can see through the width of laser.
As mentioned above, can be set at:
H1≥H≥H3
In addition, under described size relationship, during cleaning dustproof glass 8a, side 8aE and the scraper plate 32A of dustproof glass 8a can not interfere, and can avoid scraping dash-board injury.
From Fig. 5 and Fig. 7 A as can be known, on the upper body 10a of dustproof glass 8a sidepiece, uniformly-spaced or unequal interval be provided with guide 11, be used for described cleaner 32 being led along the length direction of dustproof glass 8a.11 one-tenth opposition of this guide are established, and the face 8a1 of the relative dustproof glass 8a of leading section 11a separately subtend parallel to each other is extended.Like this, (the 7B-7B line cross section of Fig. 7 A is shown in Figure 1 as Fig. 7 B, described support unit 32B is provided with the installed surface of scraper plate 32A, and this installed surface is in the face 32f (following brief note for " back side ") of rear side relatively, described leading section 11a and face 11b dustproof glass 8a subtend join with the back side 32f of the support unit 32B of described cleaner 32, during the cleaning action, keep support unit 32B, the function of the guide when playing the action of support unit 32B forward-reverse.
The cleaning occasion, among the guide 11 among Fig. 5, the guide 11f from device front face side (Figure 5 shows that upper left) presses direction shown in the arrow FD, inserts the leading section of described cleaner 32.As shown in Figure 8; position P ' is in the inboard of the most inboard rib 8a3 of dustproof glass 8a; and be in some outsides than writing range P1-P2; after described cleaner 32 arrives described position P '; from this position P '; pull out along arrow B K direction, scrape with scraper plate 32A and get attached to foreign matters such as the dust on the lateral surface 8a1 of dustproof glass 8a or the toners that disperses.In this process, when scraper plate 32A surmounts the rib 8a2 of described dustproof glass 8a, slip on the rear side 32Af of scraper plate 32A and dustproof glass 8a surface, elastic deformation takes place, can not bring into play the strong especially function of peeling off, therefore, when scraper plate 32A surmounts the rib 8a2 of described dustproof glass 8a, the damage of scraper plate 32A is not almost had.
In contrast; when make scraper plate 32A reply occasion along arrow B K direction; the 32Ae of edge portion of the front end of scraper plate 32A plays the scraper plate function; the lateral surface 8a1 of described edge 32Ae of portion and dustproof glass 8a slips; scrape foreign matters such as the dust of getting on the described lateral surface 8a1 or the toner that disperses, can bring into play good cleaning function.Therefore, on function, arrow B K direction is the cleaning direction.At this moment, as shown in Figure 8, guide 11f restriction shift position by described front side, make and not surmount the diagram left end 8a3 of dustproof glass 8a and move to upper body 10a side, therefore, even move along arrow B K direction, the 32Ae of edge portion can begin to move from P ' position, the 32Ae of edge portion part can not met described rib 8a3 and be caused the 32Ae of edge portion damage, can steady in a long-termly guarantee usability.Described operation is carried out by the 32C of handgrip portion of cleaner 32.
When inserting along arrow FD direction; cleaning is attached to foreign matter occasions such as the dust on the dustproof glass 8a or the toners that disperses; foreign matters such as the dust or the toner that disperses be swept into the cleaning starting position towards outside housing 10a side, can not enter the scanning area of light beam, also have the cleaning effect.
In order to guarantee the reliability of scraper plate 32A, can also make the face 8a1 in the outside of the face in the outside of upper body 10a and dustproof glass 8a be in same plane, perhaps make dustproof glass 8a side retreat from the face in the described upper body 10a outside.But, if the face 8a1 in the outside of dustproof glass 8a all retreats from the face in the outside of external shell 10a, though then pass through the cleaning of the elastic energy assurance of scraper plate 32A towards the side-prominent part of dustproof glass 8a, but can not guarantee to require the part of cleaning all to contact reliably with dustproof glass 8a, low as the cleaning function of original purpose.Because above-mentioned reason, in the present embodiment, as Fig. 8 and shown in Figure 9, make the face 8a1 in the outside of dustproof glass 8a from the face in the outside of upper body 10a outstanding (overhang X), the face 8a1 in the outside of cleaning part 32A front end and dustproof glass 8a slips fully, can give full play to cleaning function.
At this moment, if overhang is big, the face in the following outside from upper body 10a of dustproof glass 8a is outstanding, makes that then described guide 11 is more outstanding, causes the thickness direction size big, perhaps teat and other parts interfere, therefore, as shown in Figure 9, when the described overhang with dustproof glass 8a is made as X, when the thickness of dustproof glass 8a is made as t, make to have the following formula relation:
0＜X＜t
In an embodiment of the present invention, for example, the thickness t of dustproof glass 8a is made as 1-3mm, preferred 2mm, and overhang X is made as about 0.5mm.
At this moment, if set cleaning starting position P3, this cleaning starting position P3 is positioned at the left side of the left end incline 8a3 of dustproof glass 8a, and then as mentioned above, the 32Ae of edge portion of scraper plate 32A and the end face of described rib 8a3 join, and damaged possibility is big.So, as shown in figure 10, can be so that the face 8a1 in the outside of the relative dustproof glass 8a of face 10a in the outside of the upper body of cleaning starting position P3 side (diagram left side) be in same plane or has some outstanding.That is, the face 10a in the outside of the face 8a1 in the outside of the dustproof glass 8a of described rib 8a3 side and upper body can be set at following relation:
X≤0 (wherein, X is the overhang of face 10a in the outside of the relative upper body of face 8a1 in the outside of dustproof glass 8a).
Like this, scraper plate 32A is in order to clean, and when the rib 8a2 on Figure 10 right side partly contacted the face 8a1 in the outside of dustproof glass 8a, the rear side of scraper plate 32A was joined, and elastic deformation takes place, and does not worry that scraper plate 32A sustains damage.In addition, when scraper plate 32A from cleaning position P3 when arrow B K direction is cleaned, rib 8a3 or its side in the 32Ae of edge portion of scraper plate 32A and the left side of dustproof glass 8a join, and can not damage the 32Ae of edge portion of scraper plate 32A.During cleaning, the face 8a1 that scrapes the outside of getting dustproof glass 8a can bring into play good cleaning function from the outstanding part of the face 10a in the outside of upper body.
As shown in figure 11, the installation portion of expression dustproof glass 8a is from the outstanding occasion of the face 10a of housing.In this occasion, when the thickness with dustproof glass 8a is made as t, when being made as t1 from the height of the installed surface of face 10a to dustproof glass 8a toward housing of housing, this occasion has the following formula relation:
X＝t+t1
At this moment, above-mentioned t1 is outstanding state, therefore, and t1＞0.
Like this; according to present embodiment; make that the surface (the face 8a1 in the outside) of dustproof glass 8a is outstanding from the surface (the face 10a in the outside of upper body) of housing 10, scrape foreign matters such as the dust of getting or the toner that disperses by cleaner 32 and can not remain in dustproof glass 8a surface, can clean reliably.Even, also can bring into play the cleaning effect reliably up in the present embodiment occasion that dustproof glass 8a installs.
In the t1 part as the erecting bed height in above-mentioned Figure 11,, promptly among the recessed face 10a, then have the following formula relation if its base end part is lower than face 10a:
X＜t+t1
By cleaning part 32A is made as blade structure, can prevent to make distortion or the damage of the 32Ae of edge portion (top ends) of scraper plate 32A when dustproof glass 8a is outstanding.
In addition,, when the thickness of dustproof glass 8a is made as t, be made as 0＜X＜t relation, depart from because of dustproof glass 8a takes place cleaning part 32A in the time of preventing to clean when the face 8a1 in the outside of dustproof glass 8a is made as X from the overhang of the face 10a in the outside of external shell.
In the present embodiment, be that representative is described with dustproof glass 8a, other three dustproof glass 8b, 8c, 8d are too.
At the framework inner face of image processing system shown in Figure 3, door inboard or frame side wall for example forms the maintaining part same with described guide part 11, when non-use, cleaner 32 itself remained on this maintaining part.Like this, only where necessary, the user can take out this cleaner 32 from this maintaining part, carries out aforesaid cleaning.
Second embodiment
Figure 13 A-13D is that the cleaner that second embodiment of the invention relates to cleans the key diagram of action.Except cleaner, other is identical with first embodiment, and equal part adopts prosign, and repeat specification is omitted.
In the present embodiment, cleaner 32 is made of scraper plate (cleaning part) 32A and supporting part 32B.This support unit 32B is at the pull-out direction (arrow B K direction) along scraper plate 32, and the part that is in upstream side forms bending.In illustrated example, bend 32R forms convex.This bend 32R is used to prevent that support unit 32B from takeofing because of elasticity.Promptly, if the back side of the support unit 32B of scraper plate 32 is installed all to join with guide 11, when then cleaning, the leading section of support unit 32B (end of scraper plate 32A installation side) 32E takeoffs when leaving guide 11, the crimp force of the face 8a1 in the outside of 32 couples of dustproof glass 8a of scraper plate changes, and it is bad that cleaning easily takes place.
So, shown in Figure 13 A-13D, set the position of bend 32R, flexibility, and the interval of the guide 11 of adjacency are when along arrow B K direction, when pulling out cleaner 32, only make the back side of guide 11 and support unit 32B of the pull-out direction upstream side be usually located at scraper plate 32A join.Like this, shown in Figure 13 D (the 13D-13D line sectional view of Figure 13 C), have clearance G usually between the leading section 32E of support unit 32B and the guide part, because the retroaction of the pushing effect of guide 11, the leading section 32E of support unit 32B can not takeoff.Like this, if at support unit 32B bend 32R is set, make its leading section 32E not join with guide 11, even then insert cleaner 32 occasions, because clearance G, described leading section 32E and guide 11 can not interfere yet, and operability is good.Have again,, can adjust the crimp force of face 8a1 in the outside of 32 couples of dustproof glass 8a of scraper plate by setting described flexibility.
Figure 14 A and Figure 14 B represent the variation of support unit 32B, and Figure 14 A represents to constitute bend 32R by leaf spring 32S, and Figure 14 B represents protuberance 32R and support unit 32B are made as one.In Figure 14 B example, as shown in the figure, can constitute cleaning part 32A with brush or felt or sponge etc.
Above-mentioned leaf spring 32S is formed on the linearity support unit 32B of first embodiment shown in above-mentioned Fig. 7 A, and it is corresponding with the bend (with reference to Figure 13 A) at the support unit back side to form the position, is set at the flexibility equal with this bend.Like this, can obtain equal function with the support unit 32B of above-mentioned bending.
Equally, in Figure 14 B example, protuberance 32T surface forms circular-arc, when protuberance 32T produce when the guide part 11 fixed crimp force, clean action.
It is identical that other does not have each several part and first embodiment of explanation to constitute, and has same function.
In above embodiment, deflection means and polygonal mirror 1a, 1b is corresponding, light transmission dust proof member and dustproof glass 8a, 8b, 8c, 8d is corresponding, as mounting body and photoconductor drum 9a, 9b, 9c, 9d is corresponding.
Above with reference to description of drawings embodiments of the invention, but the present invention is not limited to the foregoing description.Can do all changes in the technology of the present invention thought range, they all belong to protection scope of the present invention.
Claims (13)
1. optical writing device makes that by inflector assembly the light transmission dust proof member on being located at housing injects to outside the housing, writes sub-image at the face that is scanned as the mounting body, it is characterized in that according to the beam deflection of image signal modulation:
Be provided with guiding parts,, the cleaner of the face in the outside that is used to clean described light transmission dust proof member led along the length direction of described light transmission dust proof member;
The support unit that described cleaner is provided with cleaning part and supports this cleaning part, the face in the outside of described cleaning part and described light transmission dust proof member slips, and cleaning is attached to foreign matters such as dust on the face in this outside or toners;
Described cleaning part is installed in the front of described support unit, along the cleaning direction, is provided with bend at the upstream side of the described cleaning part installation portion of described support unit;
The face in the outside of described light transmission dust proof member is outstanding laterally near the outside of the above-mentioned housing the installation portion of this light transmission dust proof member.
2. according to the optical writing device described in the claim 1, it is characterized in that described cleaning part is made of scraper plate, it wipes foreign matters such as dust or toner with edge portion.
3. according to the optical writing device described in the claim 1, it is characterized in that described bend is made as: from the described cleaning part of described support unit, institute's certain portions of rear side becomes convex.
4. according to the optical writing device described in the claim 3, it is characterized in that described protruding part forms as one as circular-arc bulge.
5. according to the optical writing device described in the claim 3, it is characterized in that described protruding part is made of the leaf spring of bending.
6. according to the optical writing device described in the claim 1, it is characterized in that be directed to when mobile by described guiding parts, the leading section and the guiding parts of described support unit leave usually.
7. according to the optical writing device described in the claim 1, it is characterized in that the overhang of the outside of the described relatively housing of face in the described light transmission dust proof member outside is made as X, the thickness of described light transmission dust proof member is made as t, sets to have the following formula relation:
0＜X＜t。
8. according to the optical writing device described in the claim 1, it is characterized in that described light transmission dust proof member installed surface is positioned at from outstanding position, the outside of described housing, and described light transmission dust proof member is installed on this installed surface.
9. according to the optical writing device described in the claim 1, it is characterized in that described cleaning part is set between the scanning starting position of the end of the peristome that described light transmission dust proof member is installed and described light beam towards the starting position of cleaning direction when moving.
10. according to the optical writing device described in the claim 1, it is characterized in that, size with length direction orthogonal direction described light transmission dust proof member described cleaning part is littler than the size with length direction orthogonal direction of described light transmission dust proof member, and is bigger than the equidirectional size of the peristome that described light transmission dust proof member is installed.
11. the optical writing device according to described in the claim 1 is characterized in that, the face in the outside of described light transmission dust proof member is made as up.
12. an image processing system comprises:
Aforesaid right requires any described optical writing device among the 1-11;
Image forming part by described optical writing device, writes image on as the mounting body, this image recording is exported as visual image on recording medium.
13. the image processing system according to described in the claim 12 is characterized in that:
Described image forming part is arranged on and height and position more than the same level of described optical writing device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP194635/04 | 2004-06-30 | ||
| JP2004194635 | 2004-06-30 | ||
| JP140987/05 | 2005-05-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715991A CN1715991A (en) | 2006-01-04 |
| CN100351711C true CN100351711C (en) | 2007-11-28 |
Family
ID=35821978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100814091A Active CN100351711C (en) | 2004-06-30 | 2005-06-30 | Optical writing unit and image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100351711C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5597675B2 (en) * | 2012-05-31 | 2014-10-01 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| WO2014102958A1 (en) | 2012-12-27 | 2014-07-03 | キヤノン株式会社 | Image forming device |
| JP6136841B2 (en) * | 2013-10-11 | 2017-05-31 | 富士ゼロックス株式会社 | Cleaning device and image forming apparatus |
| JP6919171B2 (en) * | 2016-10-12 | 2021-08-18 | 富士フイルムビジネスイノベーション株式会社 | Exposure window parts and exposure equipment and image forming equipment using them |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375764A (en) * | 1986-09-19 | 1988-04-06 | Fujitsu Ltd | Window cleaning mechanism for optical device |
| US5073795A (en) * | 1989-06-30 | 1991-12-17 | Ricoh Company, Ltd. | Electrophotography type image forming apparatus having improved exchanging kit |
| US5089850A (en) * | 1986-05-16 | 1992-02-18 | Sharp Kabushiki Kaisha | Image forming unit with a charger wire and optics cleaning mechanism |
| JP2002267983A (en) * | 2001-03-08 | 2002-09-18 | Ricoh Co Ltd | Image forming apparatus equipped with optical writing unit |
-
2005
- 2005-06-30 CN CNB2005100814091A patent/CN100351711C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5089850A (en) * | 1986-05-16 | 1992-02-18 | Sharp Kabushiki Kaisha | Image forming unit with a charger wire and optics cleaning mechanism |
| JPS6375764A (en) * | 1986-09-19 | 1988-04-06 | Fujitsu Ltd | Window cleaning mechanism for optical device |
| US5073795A (en) * | 1989-06-30 | 1991-12-17 | Ricoh Company, Ltd. | Electrophotography type image forming apparatus having improved exchanging kit |
| JP2002267983A (en) * | 2001-03-08 | 2002-09-18 | Ricoh Co Ltd | Image forming apparatus equipped with optical writing unit |
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| Publication number | Publication date |
|---|---|
| CN1715991A (en) | 2006-01-04 |
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