CN101846894A - Electrophototgraphic photoreceptor and image forming device - Google Patents
Electrophototgraphic photoreceptor and image forming device Download PDFInfo
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- CN101846894A CN101846894A CN201010104280A CN201010104280A CN101846894A CN 101846894 A CN101846894 A CN 101846894A CN 201010104280 A CN201010104280 A CN 201010104280A CN 201010104280 A CN201010104280 A CN 201010104280A CN 101846894 A CN101846894 A CN 101846894A
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Abstract
The invention provides an electrophototgraphic photoreceptor capable of effectively preventing the generation of a white mark in the formed image and an image forming device with the same. The electrophototgraphic photoreceptor has a tubular body and a photosensitive layer arranged at the periphery of the body, characterized in that a contour line representing the surface shape of the photosensitive layer in the axis direction of the body has, compared with a first straight line for connecting the ends of both sides of the photosensitive layer, a recessed part recessed to the axis side.
Description
Technical field
The present invention relates to Electrophtography photosensor and image processing system.Particularly relate to the Electrophtography photosensor and the image processing system that can suppress to form the generation of turning white in the image effectively.
Background technology
At present, use in the image processing system of xerography at duplicating machine, printer etc., set Electrophtography photosensor cylindraceous abreast and be similarly developer roll cylindraceous, with the toner development of electrostatic latent image that is formed on the Electrophtography photosensor by supplying with by developer roll.
On the other hand, crimp force between Electrophtography photosensor and the developer roll (adopt and contact when developing) or spacing (when adopting noncontact to develop) easily change according to various factors, the problem at the interval that existence is difficult to keep constant.
Further, if above-mentioned crimp force or spacing are excessively inhomogeneous, then toner becomes inhomogeneous by developer roll to the mobile of Electrophtography photosensor, and the result easily produces the (Bai order け that turns white) etc. the bad problem of image.
Therefore, in order to address this is that, the Electrophtography photosensor (for example, patent documentation 1) that is provided with thick protuberance at two ora terminalis of matrix is disclosed.
That is, disclose by two ora terminalis at matrix thick protuberance is set, when inserting flange at the two ends of matrix, two ora terminalis that can suppress matrix expand laterally, are difficult for producing because the Electrophtography photosensor of the variation of the spacing that the expansion of this matrix causes.
In addition, disclose so that the contact pressure of Electrophtography photosensor and cleaning balde evenly is the Electrophtography photosensor of purpose, but near the Electrophtography photosensor (patent documentation 2) of the external diameter of Electrophtography photosensor from reducing gradually to the both ends of length direction the generatrix direction center.
Patent documentation 1: Japanese kokai publication hei 10-48904 communique
Patent documentation 2: TOHKEMY 2000-98642 communique
But,, have the crimp force that is difficult to stably keep between Electrophtography photosensor and the developer roll or the problem of spacing because disclosed Electrophtography photosensor reckons without the bending of developer roll fully in the patent documentation 1 and 2.
Promptly, in patent documentation 1 and 2, since do not consider fully developer roll central portion might because of extruder member to be expressed into the mode bending of Electrophtography photosensor side, be difficult to stably to keep crimp force or spacing between Electrophtography photosensor and the developer roll.
Specifically, in patent documentation 1, it is still smooth that the photographic layer of Electrophtography photosensor forms regional surface configuration, in patent documentation 2, has protuberance in the developer roll side on the contrary.
Therefore, because at the both ends of Electrophtography photosensor, it is excessive that the crimp force between Electrophtography photosensor and the developer roll becomes too small or spacing becomes, and exists toner to be difficult to develop to this part, form and easily produce the problem of turning white in the image.
Summary of the invention
That is, the objective of the invention is to, the Electrophtography photosensor and the image processing system that can suppress to form the generation of turning white in the image effectively are provided.
The invention provides a kind of Electrophtography photosensor, possess matrix cylindraceous and the photographic layer on every side that is configured in described matrix, it is characterized in that, the outline line of surface configuration of the described photographic layer of expression has with first straight line of two sides' that are connected described photographic layer end and compares in the axis direction cross section of described matrix, to the recess of axis side depression, thereby can address the above problem.
Promptly, the outline line of surface configuration of expression photographic layer has compares the recess that caves in the axis side with first straight line of the two square end portions that are connected photographic layer, even thus since extruding and developer roll produce under the situation such as bending, with contact development, noncontact is developed irrespectively, can stably suppress crimp force between the end of the end of Electrophtography photosensor and developer roll and become too small or spacing becomes excessive.
Thus, can be suppressed at the position corresponding to the end of Electrophtography photosensor that forms in the image effectively produces and turns white.
In addition, another way of the present invention is a kind of image processing system, possesses: described Electrophtography photosensor; Developing parts, described developing parts develops to the electrostatic latent image that is formed on the described Electrophtography photosensor with developer, thereby forms the developer image on described Electrophtography photosensor; And transfer member, the described developer image that described transfer member will utilize described developing parts to be formed on the described Electrophtography photosensor arrives the recording medium of stipulating.
Promptly, owing to possess the Electrophtography photosensor of recess with regulation, even when developer roll produces bending owing to push etc., also can stably suppress crimp force between the end of the end of Electrophtography photosensor and developer roll and become too small or spacing becomes excessive, can suppress the generation of turning white of the formation image that causes thus effectively.
Description of drawings
The figure that Fig. 1 describes for the structure to Electrophtography photosensor of the present invention;
The figure that Fig. 2 describes for the mechanism of production to the bending of developer roll;
The figure that (a)～(b) of Fig. 3 describes for the effect to Electrophtography photosensor of the present invention;
Another figure that (a)～(b) of Fig. 4 describes for the structure to Electrophtography photosensor of the present invention;
The another figure that Fig. 5 describes for the structure to Electrophtography photosensor of the present invention;
The figure of Fig. 6 for image processing system of the present invention is described;
Fig. 7 is the figure to having used the spacing restriction to describe with the mode of roller bearing;
Fig. 8 is the figure of the surface configuration of the Electrophtography photosensor among the expression embodiment.
Embodiment
[first embodiment]
Below, for Electrophtography photosensor, carry out specific description respectively by each constitutive requirements as first embodiment of the present invention.
1, shape
As shown in Figure 1, Electrophtography photosensor of the present invention is the Electrophtography photosensor 41 that possesses matrix 22 cylindraceous and be configured in the photographic layer 14 on every side of matrix 22, it is characterized in that, in the axis direction cross section of matrix 22, be that the outline line 4 of surface configuration of the expression photographic layer 14 in the cross section of containing axis shown in Figure 1 is (among the figure, represent with thick line) have and two square end portions 6 that are connected photographic layer 14 (among the figure, represent with open circles) imaginary line 10 (first straight line) compare, to the recess 12 of axis 2 lateral bending songs.
Its reason is, because having with the imaginary line 10 of the two square end portions 6 that are connected photographic layer 14, the outline line 4 of the surface configuration of expression photographic layer 14 compares, recess 12 to axis lateral bending song, when therefore even developer roll produces bending owing to push, with contact development, noncontact is developed irrespectively, can stably suppress crimp force between the end of the end of Electrophtography photosensor and developer roll and become too small or spacing becomes excessive.
So, can be suppressed at the position that forms image thus effectively and produce and turn white corresponding to the end 6 of Electrophtography photosensor 41.
And " the two square end portions of photographic layer " among the present invention refer to two sides' the end 6 of the axis direction of the photographic layer 14 that is formed on the matrix 22.
On the other hand, when the top of flange be press-fit into matrix 22 be equivalent to be formed with the part in zone of photographic layer 14 time, will utilize this flange to avoid the position of the dilation of matrix 22 and photographic layer 14 to be called " two square end portions of photographic layer ".
That is, Ci Shi " two square end portions of photographic layer " refer to top from this flange towards the axis direction center, the assigned position for example in 5～20mm scope, stipulated.
More particularly, sketch as Electrophtography photosensor 41 and developing parts 44 is shown in Figure 2, usually on developer roll 40, the thin layer plate 49 of thin layerization etc. when many extruding are used for developer roll 40 supplied with donor rollers 48a, the 48b of toners and be used to make toner frictional electrification on the developer roll 40.
At this moment, shown in Fig. 3 (a)～(b), on developer roll 40, can apply the power F that above-mentioned extruding produces, with its central portion to Electrophtography photosensor 41 ', the mode extruded of 41 sides, easily produce crooked.And, (a) of Fig. 3 illustrate photographic layer 14 ' the smooth common Electrophtography photosensor 41 of surface configuration ', the outline line 4 that (b) of Fig. 3 illustrates the surface configuration of expression photographic layer 14 has the Electrophtography photosensor of the present invention 41 of recess 12.
Confirmed when the material by weak strength constitutes the core of developer roll 40 or spindle unit or its diameter of axle hour is easy to generate above-mentioned bending especially.
On the other hand, the Electrophtography photosensor 41 that sets abreast with developer roll 40 ', 41 at strict inhomogeneity precise part aspect each characteristic such as charged characteristic, light sensitivity characteristic.
Therefore, use parts that aluminum pipe base etc. has a prescribed strength as matrix 22 ', 22 can not produce bending basically.
Its result, shown in Fig. 3 (a), when adopting noncontact to develop, Electrophtography photosensor 41 ' and developer roll 40 between spacing Electrophtography photosensor 41 ' central portion become smaller, on the other hand Electrophtography photosensor 41 ' the end become bigger.
So, the bigger Electrophtography photosensor 41 of gap ratio ' the end, become insufficient from the mobile of toner of developer roll 40, the result easily produces the bad problem of image such as turn white.
In addition, though not shown, when adopting contact to develop, the crimp force between Electrophtography photosensor and the developer roll becomes bigger at the central portion of Electrophtography photosensor, becomes smaller in the end of Electrophtography photosensor on the other hand.
Its result, developing with noncontact similarly produces the bad problem of image such as turn white easily in the end of Electrophtography photosensor.
In addition, below for illustrated convenience, be that example describes mainly with the noncontact development.
Problem hereto, Electrophtography photosensor 41 of the present invention is owing to have the shape of afore mentioned rules, shown in Fig. 3 (b), even because the power F that extruding produces and developer roll 40 produce when crooked, also can control so that no excessive difference in the central portion of Electrophtography photosensor 41 and the end 6 spacing between Electrophtography photosensor 41 and the developer roll 40.
Therefore, Electrophtography photosensor 41 of the present invention can be suppressed at the position corresponding to the end of Electrophtography photosensor that forms image effectively and produces and turn white.
In addition, shown in Fig. 4 (a), near near the slope of the outline line 4 of the slope ratio recess 12 of the outline line 4 of preferred end 6 (descend most point 8) is mild.And slope is defined as the degree of tilt of the tangent line at this position.
Its reason is, by such formation, can more stably keep crimp force or spacing between Electrophtography photosensor 41 and the developer roll 40.
Promptly, shown in Fig. 4 (b), because two square end portions 6 of developer roll 40 position by bearing, the bend ratio end 6 of central portion is big, when near the slope near the end 6 of descending most slope and photographic layer 14 point 8 of recess 12 is identical, there is the developer roll 40 of two square end portions, 6 sides of photographic layer 14 and the crimp force between the Electrophtography photosensor 41 possibility excessive or that spacing becomes too small that becomes.
In addition, when the gentle slope of steep slope is set as mentioned above, shown in Fig. 4 (a), the slope that connects the straight line (second straight line) of mid point 16 and end 6, slope than the straight line (the 3rd straight line) that connects mid point 16 and recess 12 (descend most point 8) is mild, wherein, mid point 16 (is represented with open circles among the figure for end 6.Recess 12 descend point 8 and mid point 16 most too) and recess 12 (descend most point 8) between mid point.And in (a) of Fig. 4, length L 1 is corresponding to the distance of axial recess 12 (descend most point 8) and mid point 16 and end 6 distance with mid point 16.
Its reason is, by such formation, can further stably keep crimp force or spacing between Electrophtography photosensor 41 and the developer roll 40.
That is, as mentioned above, because two sides' of developer roll 40 end 6 positions by bearing, the bend ratio end 6 of central portion becomes big, by formation like this, can make the shape of the shape of Electrophtography photosensor 41 and crooked developer roll 40 more corresponding.
In addition, in the above description, the straight line that second liner is decided to be the mid point 16 that connects between end 6 and the recess 12 (descend most point 8) and end 6 the 3rd liner is decided to be the straight line that connects mid point 16 and recess 12 (descend most point 8), but the regulation of second straight line and the 3rd straight line is not limited thereto.For example, replace mid point 16 with near the points (hereinafter referred to as near point) the mid point 16, thereby the liner of near point connecting and end 6 can also be decided to be second straight line, near the liner of point and recess 12 connecting (descend most point 8) is decided to be the 3rd straight line.For near point this, more particularly, be in the scope of 0～50mm preferably, more preferably in 0～30mm distance range at distance mid point 16.
In addition, as shown in Figure 1, the outline line 4 of preferably representing the surface configuration of photographic layer 14 all is positioned at axis 2 sides of imaginary line 10 of two sides' that connect photographic layer 14 end 6.
Its reason is that by such formation, the bending of developer roll 40 is followed on the surface of Electrophtography photosensor 41 effectively, can stably keep crimp force or spacing between Electrophtography photosensor 41 and the developer roll 40.
In addition, as shown in Figure 5, the outer diameter A (mm) of the Electrophtography photosensor 41 of the end 6 of preferred photographic layer 14 satisfies following relational expression (1) with the external diameter B (mm) of the Electrophtography photosensor that descends point 8 most 41 of recess 12.
2(μm)＜A-B＜50(μm) (1)
Its reason is, the difference of the outer diameter A of the end 6 by making photographic layer 14 and the external diameter B that descends point 8 most of recess 12 is in such scope, the bending of developer roll 40 is followed on the surface of Electrophtography photosensor 41 effectively, therefore can stably keep crimp force or spacing between Electrophtography photosensor 41 and the developer roll 40.
Promptly, if value (A-B) is the value less than 2 μ m, then recess 12 became shallow, the crimp force of Electrophtography photosensor 41 and developer roll 40 that exists in the end 6 of Electrophtography photosensor 41 possibility that spacing too small or in the end 6 of Electrophtography photosensor 41 becomes excessive that becomes.On the other hand, if value (A-B) is for surpassing the value of 50 μ m, then recess 12 became dark, and the crimp force of Electrophtography photosensor 41 and developer roll 40 that exists in the end 6 of Electrophtography photosensor 41 becomes excessive or in the spacing of the central portion of the Electrophtography photosensor 41 too small possibility that becomes.
Therefore, Electrophtography photosensor 41 more preferably satisfies following relational expression (1 ') at the outer diameter A and the Electrophtography photosensor 41 of the end 6 of photographic layer 14 at the external diameter B that descends most point 8 of recess 12, further preferably satisfies following relational expression (1 ").
3(μm)＜A-B＜40(μm) (1′)
4(μm)＜A-B＜15(μm) (1″)
In addition, preferably make outer diameter A in the scope of 20～40mm.
Its reason is, by making outer diameter A at the Electrophtography photosensor 41 of the end 6 of photographic layer 14 in such scope, can be formed uniformly recess 12.
Therefore, more preferably make outer diameter A in the scope of 23～35mm.
In addition, though the length L 2 of the part of the formation photographic layer 14 of the Electrophtography photosensor 41 among Fig. 5 on axially depends on the length of matrix 22, usually preferably in the scope of 200～350mm, more preferably in the scope of 210～300mm.
In addition, as shown in Figure 5, Electrophtography photosensor 41 is at the external diameter C (mm) at the end 6 of photographic layer 14 and the mid point that descends point 8 most 16 places of recess 12, preferably satisfy following relational expression (2) with external diameter B.
2(μm)＜C-B＜40(μm) (2)
Its reason is, external diameter C by making at the end 6 of photographic layer 14 and the mid point that descends point 8 most 16 of recess 12, with the difference of the external diameter B that descends most point 8 of recess 12 in such scope, the bending of developer roll 40 can be more effectively followed on the surface of Electrophtography photosensor 41, can further stably keep crimp force or spacing between Electrophtography photosensor 41 and the developer roll 40.
That is, if (C-B) less than 2 μ m, then near point 8 slopes that descend most of recess 12 became slow, might be difficult to follow the bending of developer roll 40.On the other hand, if (C-B) surpass 40 μ m, then near the slopes the point 8 that descend most of recess 12 became steep, might be difficult to make the surface of Electrophtography photosensor 41 to follow the bending of developer roll 40.
Therefore, Electrophtography photosensor 41 further preferably satisfies following relational expression (2 ") at the external diameter C at the end 6 of photographic layer 14 and the mid point that descends point 8 most 16 places of recess 12, more preferably satisfy following relational expression (2 ') with Electrophtography photosensor 41 at the external diameter B that descends most point 8 of recess 12.
3(μm)＜C-B＜30(μm) (2′)
3(μm)＜C-B＜10(μm) (2″)
2, matrix
Constituent material as matrix 22 of the present invention can use various materials.
Can enumerate for example matrix of metals formation such as iron, copper, tin, platinum, silver, vanadium, molybdenum, chromium, cadmium, titanium, nickel, palladium, indium, stainless steel and brass; Evaporation or lamination the matrix that forms of the plastic material of above-mentioned metal; The perhaps matrix of the glass that covers with silver iodide, alumite, tin oxide and indium oxide etc. etc.
That is, can be that matrix itself has electric conductivity, perhaps the surface of matrix has electric conductivity, in addition, has sufficient mechanicalness intensity in use and gets final product.
In addition, as shown in Figure 5, the external diameter b (mm) corresponding to the position of descending most point 8 of recess 12 corresponding to the external diameter a (mm) of the position of the end 6 of photographic layer 14 and matrix 22 of matrix 22 preferably satisfies following relational expression (3).
2(μm)＜a-b＜50(μm) (3)
Its reason is, by make matrix 22 corresponding to the external diameter a of the position of the end 6 of photographic layer 14 and matrix 22 corresponding to the difference of the external diameter b of the position of descending point 8 most of recess 12 in such scope, the thickness of not regulating photographic layer 14 just can form recess 12.
That is, shown in Fig. 1 waits, make the shape that is shaped as regulation of matrix 22, only on matrix 22, form the photographic layer 14 of homogeneous film thickness thus, can obtain having the Electrophtography photosensor 41 of the recess 12 of regulation.
Therefore, the external diameter b corresponding to the position of descending most point 8 of recess 12 corresponding to the external diameter a of the position of the end 6 of photographic layer 14 and matrix 22 of matrix 22 more preferably satisfies following relational expression (3 '), further preferably satisfies following relational expression (3 ").
5(μm)＜a-b＜40(μm) (3′)
5(μm)＜a-b＜30(μm) (3″)
In addition, consider from same viewpoint, as shown in Figure 5, the external diameter c (mm) that descends mid point 16 positions between the point 8 most corresponding to the end 6 of photographic layer 14 and recess 12 of matrix 22, preferably satisfy following relational expression (4), more preferably satisfy following relational expression (4 ') with external diameter b.
3(μm)＜c-b＜25(μm) (4)
5(μm)＜c-b＜20(μm) (4′)
And the thickness L3 of matrix 22 is preferably in the scope of 0.1～5mm, further preferably in the scope of 0.3～2mm.
In addition, the axial length L 4 of matrix 22 is preferred in the scope of 230～500mm, more preferably in the scope of 240～380mm.
In addition, preferred substrate 22 obtains by cutting.
Its reason is, if cut, then can evenly and easily form the recess of stipulating 12 to matrix 22.
As the cutting process of this matrix 22, preferred at first to behind the lathe fixing base 22 that is fixed with diamond bit, in the time of rotation suitably to matrix 22 axially and circumferencial direction move, and contact, thereby cut with diamond bit.
3, photographic layer
Do not limit especially as photographic layer 14, can perhaps in resin, be dispersed with the single-layer type of organic photo material or the organic photosensitive layer of laminated-type for the inorganic photographic layer of amorphous silicon photographic layer etc.
In addition, do not limit especially, can be known composition in the past for the composition of photographic layer 14.
And, do not limit especially for the thickness of photographic layer 14, but consider, if amorphous silicon photographic layer for example is then preferred in the scope of 15～50 μ m, more preferably in the scope of 20～35 μ m from the viewpoint of the electrical characteristics guaranteeing to stipulate.
In addition, if the organic photosensitive layer of single-layer type is then preferred in the scope of 20～50 μ m, more preferably in the scope of 25～40 μ m.
Further, if the organic photosensitive layer of laminated-type is then preferred in the scope of 15～50 μ m, more preferably in the scope of 20～40 μ m.
[second embodiment]
The image processing system that second embodiment forms for the Electrophtography photosensor that carries first embodiment.
Below, be the center with the point different with the content put down in writing in first embodiment, second embodiment is carried out specific description.
Image processing system of the present invention for example can preferably use the image processing system 30 of series system shown in Figure 6.Image processing system 30 possesses intermediate transfer belt 51.In addition, the upside of intermediate transfer belt 51 along the moving direction of intermediate transfer belt 51 dispose respectively magenta with developing cell 37M, cyan with developing cell 37C, yellow with developing cell 37Y and black developing cell 37Bk.
In addition, dispose Electrophtography photosensor 41 respectively towards developer roll 40.In addition, around these Electrophtography photosensors 41, dispose the live part 75 of the surface charging that makes Electrophtography photosensor 41 and form the exposure components 76 etc. of electrostatic latent images on Electrophtography photosensor 41 surface respectively.
Therefore, be formed on corresponding to the electrostatic latent image on the Electrophtography photosensor 41 of each color by developing respectively corresponding to the developer roll 40 of each color.
In addition, the primary transfer parts 56 that will be used for each color developers image of transfer printing on intermediate transfer belt 51 successively are configured in the opposition side of each Electrophtography photosensor 41 by intermediate transfer belt 51.
In addition, the downstream portion at the moving direction of intermediate transfer belt 51 disposes the secondary transfer printing parts 52 of developer image on recording medium that are used for being formed on the intermediate transfer belt 51.
Further, the lower left disposes and is used for the fixing member 34 of the developer image fixing of transfer printing on recording medium at recording medium in the drawings.
At this, be described more specifically the development of being undertaken by developer roll 40 that is formed on the electrostatic latent image on the Electrophtography photosensor 41.
Promptly, as shown in Figure 2, based on the electrostatic latent image that is formed on the Electrophtography photosensor 41, the toner that the developer roll 40 of the peristome by being provided in developing parts 44 adheres to as developer develops, and forms toner image on the surface of Electrophtography photosensor 41 thus.
At this moment, the developer roll 40 to the peristome that is provided in developing parts 44 applies power (Fb, Fc, Fa) by the extruding by the first donor rollers 48a and the second donor rollers 48b and thin layer plate 49 etc.
Its result because developer roll 40 to be to be expressed into the mode bending of Electrophtography photosensor 41 sides, in common Electrophtography photosensor, is difficult to stably to keep crimp force or spacing between Electrophtography photosensor 41 and the developer roll 40.
Problem hereto, owing to carry Electrophtography photosensor in image processing system of the present invention and be the Electrophtography photosensor of the recess of the regulation with the explanation of first embodiment, the crimp force or the spacing that therefore can stably suppress in this case between the end of the end of Electrophtography photosensor and developer roll become excessive.Thereby, can suppress to form the generation of turning white of image effectively.
And the distance of the spacing between Electrophtography photosensor and the developer roll can be with known distance be identical in the past.
In addition, in order more stably to keep this spacing, as shown in Figure 7, preferably between Electrophtography photosensor 41 and developer roll 40, clip the spacing restriction roller bearing 50 that can rotate.
[embodiment]
Below enumerate embodiment and comparative example the present invention is carried out specific description.
[embodiment 1]
1, the manufacturing of Electrophtography photosensor
(1) cutting of matrix
At first, prepare the matrix that forms by aluminium alloy of external diameter 30mm, axial length 254mm, thickness 0.75mm.
Then, behind the lathe fixing base that is fixed with diamond bit, in the time of rotation suitably to matrix axially and circumferencial direction move, and contact, thereby cut with diamond bit.
(2) mensuration of the external diameter of matrix
Then, the external diameter of matrix is measured.
Promptly, use KEYENCE (strain) system, LS-5040R, respectively external diameter a1 (mm), external diameter c1 (mm), the external diameter b (mm) of 125mm position of 72.5mm position, the external diameter c2 (mm) of 177.5mm position, the external diameter a2 (mm) of 230mm position apart from a square end portion 20mm position of matrix that obtains by cutting measured.In addition, calculate a1-b (μ m), c1-b (μ m), c2-b (μ m), a2-b (μ m) by the value of measuring.The result who obtains is as shown in table 1.
(3) formation of photographic layer
Then, coating contains the single-layer type photographic layer coating fluid of charge generating, cavity conveying agent, electron transporting agent, binding resin and organic solvent on the matrix that obtains, and is the single-layer type photographic layer of 30 μ m thereby form thickness.
And it all is 5.5mm at two ends that photographic layer forms from the uncoated width of matrix end.
(4) flange is pressed into
Then, be pressed at the two ends of the matrix that is formed with photographic layer flange until respectively apart from the degree of depth of the both ends 10mm of matrix, thereby obtain Electrophtography photosensor.
(5) mensuration of the external diameter of Electrophtography photosensor
Then, the external diameter of Electrophtography photosensor is measured.
That is, with the external diameter of matrix similarly, outer diameter A 1 (mm), C1 (mm), B (mm), C2 (mm) and the A2 (mm) of the Electrophtography photosensor of each position of external diameter a1, the c1, b, c2 and the a2 that have measured matrix measured.In addition, calculate A1-B (μ m), C1-B (μ m), C2-B (μ m), A2-B (μ m) by the value of measuring.The result who obtains is as shown in table 1.
2, the evaluation of turning white and producing
Then, use resulting Electrophtography photosensor, the generation of turning white during to the formation image is estimated.
That is, carry under the state of printer (Kyocera Mita (strain) system, FS-C5016N transformation apparatus) at the Electrophtography photosensor that will obtain, developing by contact forms gray image.Then, after the generation of turning white of the gray image that Visual Confirmation obtains, estimate according to following benchmark.The result who obtains is as shown in table 1.
And the spindle unit of the developer roll that use this moment uses the parts of SUS system.
Its result as can be known, the central portion of developer roll is at the bent 50 μ m of Electrophtography photosensor lateral bending.
◎: do not see fully and turning white.
Zero: have slightly in the position at the both ends that are equivalent to Electrophtography photosensor and to turn white, but be not in-problem scope in the practicality.
*: significantly turn white in the generation of the position at the both ends that are equivalent to Electrophtography photosensor.
[embodiment 2～6 and comparative example 1～3]
In embodiment 2～6 and the comparative example 1～3,, change the surface configuration of photographic layer thus, in addition make Electrophtography photosensor similarly to Example 1 and estimate by changing the surface configuration that machining condition changes matrix during matrix in cutting.The result who obtains is as shown in table 1.
In addition, the surface state of in Fig. 8, representing the Electrophtography photosensor of manufacturing in embodiment 2,5 and the comparative example 1 respectively with characteristic curve A～C.
[table 1]
So, according to Electrophtography photosensor of the present invention and image processing system, make the shape of the surface configuration of Electrophtography photosensor for regulation, even when developer roll produces bending owing to push thus, also can stably keep crimp force or spacing between Electrophtography photosensor and the developer roll.
Thus, can suppress to form the generation of turning white of image effectively.
Therefore, the expectation of Electrophtography photosensor of the present invention and image processing system is made remarkable contribution to high-qualityization of various image processing systems such as duplicating machine, printer.
Claims (10)
1. an Electrophtography photosensor possesses matrix cylindraceous and is configured in described matrix photographic layer on every side, it is characterized in that,
The outline line of surface configuration of the described photographic layer of expression has with first straight line of two sides' that are connected described photographic layer end and compares in the axis direction cross section of described matrix, the recess that caves in to described axis side.
2. Electrophtography photosensor according to claim 1 is characterized in that, near the slope of the described outline line near the described recess of slope ratio of the described outline line the described end is mild.
3. Electrophtography photosensor according to claim 2 is characterized in that, connects the slope of second straight line of mid point between described end and the described recess and described end, and is milder than the slope of the 3rd straight line that connects described mid point and described recess.
4. Electrophtography photosensor according to claim 1 is characterized in that described outline line all is positioned at the below of described first straight line.
5. Electrophtography photosensor according to claim 1 is characterized in that, described Electrophtography photosensor satisfies following relational expression (1) at the outer diameter A and the described Electrophtography photosensor of described end at the external diameter B of described recess,
2(μm)＜A-B＜50(μm) (1)。
6. Electrophtography photosensor according to claim 5 is characterized in that, the external diameter C and the described external diameter B of the midpoint of described Electrophtography photosensor between described end and described recess satisfy following relational expression (2),
2(μm)＜C-B＜40(μm) (2)。
7. Electrophtography photosensor according to claim 5 is characterized in that described outer diameter A is in the scope of 20～40mm.
8. Electrophtography photosensor according to claim 1 is characterized in that, described matrix satisfies following relational expression (3) at the external diameter a and the described matrix of described end at the external diameter b of described recess,
2(μm)＜a-b＜50(μm) (3)。
9. Electrophtography photosensor according to claim 1 is characterized in that described matrix obtains by cutting.
10. image processing system is characterized in that possessing:
Any described Electrophtography photosensor of claim 1～9;
Developing parts, described developing parts develops to the electrostatic latent image that is formed on the described Electrophtography photosensor with developer, thereby forms the developer image on described Electrophtography photosensor; With
The described developer image that transfer member, described transfer member will utilize described developing parts to be formed on the described Electrophtography photosensor arrives the recording medium of stipulating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-045399 | 2009-02-27 | ||
| JP2009045399A JP5197437B2 (en) | 2009-02-27 | 2009-02-27 | Electrophotographic photosensitive member and image forming apparatus |
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| Publication Number | Publication Date |
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| CN101846894A true CN101846894A (en) | 2010-09-29 |
| CN101846894B CN101846894B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101042802A Active CN101846894B (en) | 2009-02-27 | 2010-01-27 | Electrophototgraphic photoreceptor and image forming device |
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| Country | Link |
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| JP (1) | JP5197437B2 (en) |
| CN (1) | CN101846894B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109634072A (en) * | 2017-10-06 | 2019-04-16 | 富士施乐株式会社 | Photo-conductor unit and its manufacturing method, handle box and image forming apparatus |
| CN110874027A (en) * | 2018-08-31 | 2020-03-10 | 富士电机株式会社 | Electrophotographic photoreceptor and process cartridge using the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019061073A (en) * | 2017-09-27 | 2019-04-18 | 富士ゼロックス株式会社 | Image forming apparatus and image forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60247245A (en) * | 1984-05-22 | 1985-12-06 | Canon Inc | Electrophotographic supporting member |
| JPH08160809A (en) * | 1994-12-06 | 1996-06-21 | Yamanashi Electron Co Ltd | Electrophotographic photosensitive drum |
| JP3762100B2 (en) * | 1998-05-29 | 2006-03-29 | 京セラ株式会社 | Tubular heating element and fixing heat roller using the same |
| JPH11352835A (en) * | 1998-06-03 | 1999-12-24 | Seiko Epson Corp | Base body for image carrier |
| DE60032069T2 (en) * | 1999-08-02 | 2007-07-05 | Ricoh Co., Ltd. | Apparatus for imaging with the ability to effectively display a uniform charge potential |
| US6889015B2 (en) * | 2002-07-29 | 2005-05-03 | Seiko Epson Corporation | Apparatus and method of forming patch image for optimizing density control factor |
| JP4242890B2 (en) * | 2005-11-29 | 2009-03-25 | 京セラ株式会社 | Electrophotographic photosensitive member, method for producing the same, and image forming apparatus |
-
2009
- 2009-02-27 JP JP2009045399A patent/JP5197437B2/en active Active
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2010
- 2010-01-27 CN CN2010101042802A patent/CN101846894B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109634072A (en) * | 2017-10-06 | 2019-04-16 | 富士施乐株式会社 | Photo-conductor unit and its manufacturing method, handle box and image forming apparatus |
| CN109634072B (en) * | 2017-10-06 | 2024-01-12 | 富士胶片商业创新有限公司 | Photosensitive body unit, method of manufacturing the same, process cartridge, and image forming apparatus |
| CN110874027A (en) * | 2018-08-31 | 2020-03-10 | 富士电机株式会社 | Electrophotographic photoreceptor and process cartridge using the same |
| CN110874027B (en) * | 2018-08-31 | 2024-02-23 | 富士电机株式会社 | Electrophotographic photoreceptor and process cartridge using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101846894B (en) | 2012-10-03 |
| JP5197437B2 (en) | 2013-05-15 |
| JP2010197934A (en) | 2010-09-09 |
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