CN101063860B - Layer-thickness restriction member, developing device, method for manufacturing restriction blade, and blade-forming mold - Google Patents

Abstract

A layer-thickness restriction member, including: an abutting surface that is for abutting against a developer-bearing body in order to restrict a layer thickness of developer borne by the developer-bearing body; and a flash that is located on a side close to a non-abutting surface that is located on an opposite side from the abutting surface in a thickness direction of the layer-thickness restriction member.

Description

The manufacture method of layer-thickness restriction member, developing apparatus, limiting scraper and scraper plate form mould

Technical field

The manufacture method and the scraper plate that the present invention relates to layer-thickness restriction member, developing apparatus, limiting scraper form mould.

Background technology

Image processing systems such as laser printer have been known.This image processing system for example has the image carrier of carrying sub-image and makes the developing apparatus of the image development that image carrier carries by developer.When sending picture signal etc. from external device (ED)s such as main frames, the image development that image processing system carries image carrier by the developer in the developing apparatus forms the developer picture, and this developer is looked like to be transferred on the medium, finally forms image on medium.

In order to realize above-mentioned function that makes the image development that image carrier carries etc., described developing apparatus has: the developer carrier of bearing developer; And by bearing surface and this developer carrier butt and limit the layer-thickness restriction member (limiting scraper) of the bed thickness of the developer that this developer carrier carries with layer-thickness restriction member.This developing apparatus limits the bed thickness of the developer that developer carrier carries by layer-thickness restriction member, the image development that image carrier is carried by the developer that has been limited bed thickness.

Hope is uniform by the bed thickness of the developer that the bed thickness limiting part limits.Its reason is, when the bed thickness of developer is inhomogeneous, for example can produce striped etc. in the developer picture that is developed by developer carrier, thereby causes the quality of developer picture to descend.

Described layer-thickness restriction member is a formed products, can produce burr on layer-thickness restriction member sometimes when being shaped.Here, so-called burr such as is meant when (processing) resin that is shaped etc. at the edge of layer-thickness restriction member at the unnecessary part of locating to overflow.Also can consider to remove the burr of this generation, but, not remove this burr sometimes from the angle of the manufacturing process of simplifying layer-thickness restriction member.But, do not removing under the situation of deburring, when this burr is positioned near developer carrier, the bed thickness of the developer that layer-thickness restriction member may limit this developer carrier unevenly and carried.

In addition, limiting scraper for example has: the butt parts, by bearing surface and described developer carrier butt; And support unit, the adhesive surface bonding with these butt parts is used to support this butt parts, and described adhesive surface is positioned at a side opposite with described bearing surface on the thickness direction of these butt parts.

The known manufacture method that following limiting scraper is arranged: be formed separately butt parts and support unit, make the adhesive surface and the support unit bonding of the butt parts that are formed, thereby obtain limiting scraper.Sometimes adopt the method for following shaping butt parts: the matrix material that penetrates the butt parts to the mould with first mould and second mould comes these butt parts of injection molding.Described first mould has the bearing surface formation portion that is used to form described bearing surface, and described second mould has the adhesive surface formation portion that is used to form described adhesive surface and can move with respect to described first mould.

Under the situation of injection molding butt parts, when injection molding, on the boundary surface of first mould and second mould, be easy to generate burr.And when bonding had produced the adhesive surface of butt parts of burr and support unit, this adhesive surface failed to be bonded on the support unit rightly sometimes, thereby caused the precision of the limiting scraper made to reduce.

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Summary of the invention

The present invention finishes in view of above-mentioned problem, and its purpose is to provide a kind of layer-thickness restriction member of bed thickness of the developer that can limit developer carrier equably and carried.

The present invention mainly is following layer-thickness restriction member.

Layer-thickness restriction member has: bearing surface, with the developer carrier butt, to limit the bed thickness of the developer that this developer carrier carried; And burr, on the thickness direction of described layer-thickness restriction member, be positioned at non-bearing surface one side of an opposite side with described bearing surface.

In addition, the present invention finishes in view of above-mentioned problem, and its purpose is to provide a kind of manufacture method that can make the limiting scraper of high-precision limiting scraper.

The present invention mainly is the manufacture method of following limiting scraper.

The manufacture method of limiting scraper may further comprise the steps,

Step 1:

Penetrate thermoplastic elastomer to mould and come injection molding butt parts,

Described mould has first mould and second mould, described first mould has bearing surface formation portion, this bearing surface formation portion is used to form the bearing surface of the butt parts of limiting scraper, described limiting scraper and developer carrier butt are with the bed thickness of the developer that limits this developer carrier and carried, and described butt parts are formed by described thermoplastic elastomer; Described second mould has adhesive surface formation portion, and can move with respect to described first mould, described adhesive surface formation portion is used to form the adhesive surface of described butt parts, and described adhesive surface is positioned at a side opposite with described bearing surface on the thickness direction of described butt parts;

Described first mould overlaps under following situation with described second mould, that is, the boundary surface of described first mould and described second mould is being positioned between the two towards the direction of described adhesive surface formation portion from described bearing surface formation portion,

Step 2:

Bonding is by the support unit that adhesive surface and described limiting scraper had of the described butt parts of injection molding, and described support unit is used to support described butt parts.

Come clear and definite further feature of the present invention by accompanying drawing and following explanation.

Description of drawings

For a more complete understanding of the present invention and advantage, please be simultaneously with reference to the following description and accompanying drawing.

Fig. 1 is the figure that the main composition parts that constitute printer 10 are shown;

Fig. 2 is the block diagram that the control module of printer 10 is shown;

Fig. 3 is the synoptic diagram of developing apparatus;

Fig. 4 is the sectional view of main composition parts that the developing apparatus of first embodiment is shown;

Fig. 5 illustrates the limiting scraper 560 of first embodiment and the figure of the state of developer roll 510 butts;

Fig. 6 is the key diagram of structure that is used to illustrate the limiting scraper 560 of first embodiment;

Fig. 7 is the stereographic map of rubber section 561 that the limiting scraper 560 of first embodiment is shown;

Fig. 8 is the sectional view that the rubber section 561 of first embodiment is shown;

Fig. 9 is the process flow diagram of manufacturing process that the limiting scraper 560 of first embodiment is shown;

Figure 10 is the mode chart of an example that the emission forming machine 252 of first embodiment is shown;

Figure 11 illustrates the mode chart that the outward appearance of the metal die 202 of first embodiment constitutes;

Figure 12 is the mode chart of inner structure that the metal die 202 of first embodiment is shown;

Figure 13 is the mode chart that the X-X cross section of Figure 12 is shown;

Figure 14 is the mode chart that the Y-Y cross section of Figure 12 is shown;

Figure 15 is the mode chart that the Z-Z cross section of Figure 12 is shown;

Figure 16 is the figure that the rubber section that is formed 561 of first embodiment is shown;

Figure 17 illustrates the mode chart that cuts off, removes the state of remainder 565d, handle portion 565e etc. from the rubber section 561 of first embodiment;

Figure 18 is the figure of surface of contact 566a that the rubber bearing portion 566 of first embodiment is shown;

Figure 19 illustrates the mode chart of the bonding of first embodiment with anchor clamps 300;

Figure 20 A is the figure that is used to illustrate the hold mode of the rubber section 561 of first embodiment and rubber bearing portion 566;

Figure 20 B is the figure of the rubber section 561 that is used to illustrate first embodiment state when beginning to bond with rubber bearing portion 566;

Figure 20 C is the figure of the rubber section 561 that is used to illustrate first embodiment state when pressing with rubber bearing portion 566;

The figure of the state when Figure 20 D is the rubber section 561 that is used to illustrate first embodiment with the bonding EO of rubber bearing portion 566;

Figure 21 is the figure that is used to illustrate the comparative example of first embodiment;

Figure 22 is the sectional view of main composition parts that the developing apparatus of second embodiment is shown;

Figure 23 is the stereographic map of the limiting scraper 560 of second embodiment;

Figure 24 is elastic body Ea1, Ea2, the Ea3 that ether system is shown, elastic body Eb1, Eb2, the Eb3 of ester system, urethane rubber U1, U2, U3, U4, and the figure of the position of toner T in charged sequence of second embodiment;

Figure 25 is the key diagram that the outward appearance formation of image formation system is shown;

Figure 26 is the block diagram that the formation of image formation system shown in Figure 25 is shown.

Embodiment

According to the record of this instructions and accompanying drawing, at least can clear and definite following item.

Layer-thickness restriction member has:

Bearing surface is with the developer carrier butt, to limit the bed thickness of the developer that this developer carrier carried; And

Burr is positioned at non-bearing surface one side of an opposite side with described bearing surface on the thickness direction of described layer-thickness restriction member.

When the burr of layer-thickness restriction member is positioned at non-bearing surface one side of an opposite side with described bearing surface on described thickness direction,, therefore can limit the bed thickness of developer equably because this burr is difficult to the bed thickness of developer is exerted an influence.

In addition, also can be in the following ways, that is, the root of described burr on the described thickness direction between described bearing surface and described non-bearing surface, described burr is comprising on the described thickness direction: its top is positioned at the burr of described bearing surface one side when described root is observed; And its top is positioned at the burr of described non-bearing surface one side when described root is observed.

When described burr when comprising on the described thickness direction that when described root is observed its top is positioned at the burr of described bearing surface one side and its top is positioned at the burr of described non-bearing surface one side when described root is observed, burr arranges on thickness direction unevenly, thereby causes the bed thickness of the developer uneven possibility that becomes to increase.Therefore, make that burr is positioned at the effect of non-bearing surface one side on thickness direction, promptly limiting the effect of the bed thickness of developer equably can be more effective.

In addition, also can promptly, have in the following ways: first, have described bearing surface, be positioned at an end one side of described thickness direction; And second portion, have described non-bearing surface, be positioned at the other end one side of described thickness direction and be connected with this first; Described first in the length on the Width of this layer-thickness restriction member greater than the length of described second portion on this Width.

In addition, also can be in the following ways, that is, the root of described burr is positioned at the edge on the surface of described first, described surface is positioned at a side opposite with described bearing surface, described first in the length on the described thickness direction greater than the length of described second portion on described thickness direction.

When the root of burr is positioned at the edge on surface first, an opposite side with bearing surface, if make first in the length on the thickness direction greater than the length of second portion on thickness direction, then can make this burr be positioned at non-bearing surface one side by simple structure.

In addition, ten of described bearing surface mean roughness (ten-point average roughness) can be less than 10 mean roughness of described non-bearing surface.

At this moment, the concavo-convex of bearing surface diminishes, thus the bed thickness of the developer that can limit developer carrier more equably and carried.

In addition, also can promptly, be formed with first fillet at the edge of described bearing surface in the following ways, be formed with second fillet at the edge of described non-bearing surface, the radius-of-curvature of described first fillet is less than the radius-of-curvature of described second fillet.

When the radius-of-curvature of first fillet during less than the radius-of-curvature of second fillet, can make the edge of the bearing surface that is formed with first fillet sharp-pointed, can absorb developer between bearing surface and the developer carrier effectively this moment.

In addition, described layer-thickness restriction member can be formed by thermoplastic elastomer.

At this moment, be configured as the high layer-thickness restriction member of precision of thickness easily.

Layer-thickness restriction member has:

Bearing surface is with the developer carrier butt, to limit the bed thickness of the developer that this developer carrier carried; And

Burr is positioned at non-bearing surface one side of an opposite side with described bearing surface on the thickness direction of described layer-thickness restriction member;

Here, the root of described burr on the described thickness direction between described bearing surface and described non-bearing surface,

Described burr is comprising on the described thickness direction: its top is positioned at the burr of described bearing surface one side when described root is observed; And its top is positioned at the burr of described non-bearing surface one side when described root is observed;

Have:

First has described bearing surface, is positioned at an end one side of described thickness direction; And

Second portion has described non-bearing surface, is positioned at the other end one side of described thickness direction and is connected with this first;

Described first in the length on the Width of this layer-thickness restriction member greater than the length of described second portion on this Width,

The root of described burr is positioned at the edge on the surface of described first, and described surface is positioned at a side opposite with described bearing surface,

Described first in the length on the described thickness direction greater than the length of described second portion on described thickness direction,

10 mean roughness of described bearing surface are less than 10 mean roughness of described non-bearing surface,

Be formed with first fillet at the edge of described bearing surface,

Be formed with second fillet at the edge of described non-bearing surface,

The radius-of-curvature of described first fillet is less than the radius-of-curvature of described second fillet,

Form by thermoplastic elastomer.

According to this layer-thickness restriction member, the effect of bed thickness that limits developer equably is the most effective.

Developing apparatus has:

Developer carrier is used for bearing developer; And

Layer-thickness restriction member has: with the bearing surface of described developer carrier butt with the bed thickness of the developer that limits this developer carrier and carried; And the burr that on the thickness direction of this layer-thickness restriction member, is positioned at non-bearing surface one side of an opposite side with described bearing surface.

According to this developing apparatus, the bed thickness of the developer that developer carrier carried is limited equably by the bed thickness limiting part.

In addition, also can be in the following ways, promptly, described developer carrier is can be the developer carrying roller that the center is rotated with the central shaft, the length direction of described layer-thickness restriction member is axial along described developer carrier, the root of described burr on the described thickness direction between described bearing surface and described non-bearing surface, described burr is comprising on the described thickness direction: its top is positioned at the burr of described bearing surface one side when described root is observed; And its top is positioned at the burr of described non-bearing surface one side when described root is observed; Described burr is distributed in a end from the length direction of described layer-thickness restriction member to the scope of the other end of length direction.

When burr is distributed in a end from length direction to the scope of the other end of length direction the time, make that burr is positioned at the effect of non-bearing surface one side on thickness direction, promptly limiting the effect of the bed thickness of developer equably can be more effective.

In addition, also can promptly, have support unit in the following ways, be used for described non-bearing surface bonding supporting described layer-thickness restriction member,, all described burrs all do not contact with described support unit.

Jagged when all not contacting with support unit when institute, layer-thickness restriction member can be bearing on the support unit rightly, thus layer-thickness restriction member can with developer carrier butt rightly.

The manufacture method of limiting scraper may further comprise the steps,

Step 1:

Penetrate thermoplastic elastomer to mould and come injection molding butt parts,

Described mould has first mould and second mould, described first mould has bearing surface formation portion, this bearing surface formation portion is used to form the bearing surface of the butt parts of limiting scraper, described limiting scraper and developer carrier butt are with the bed thickness of the developer that limits this developer carrier and carried, and described butt parts are formed by described thermoplastic elastomer; Described second mould has adhesive surface formation portion, and can move with respect to described first mould, described adhesive surface formation portion is used to form the adhesive surface of described butt parts, and described adhesive surface is positioned at a side opposite with described bearing surface on the thickness direction of described butt parts;

Described first mould overlaps under following situation with described second mould, that is, the boundary surface of described first mould and described second mould is being positioned between the two towards the direction of described adhesive surface formation portion from described bearing surface formation portion,

Step 2:

Bonding is by the support unit that adhesive surface and described limiting scraper had of the described butt parts of injection molding, and described support unit is used to support described butt parts.

When penetrating described thermoplastic elastomer with bed die with the described butt parts of injection molding, even the part in boundary surface when injection molding has produced burr, because this burr is positioned at the position of leaving adhesive surface, therefore this adhesive surface of bonding during with support unit this burr be difficult to contact with support unit.Therefore, adhesive surface can be bonded on the support unit rightly, thereby produces the high limiting scraper of precision.Described first mould and described second mould of described mould overlap under following situation, that is, the boundary surface of described first mould and described second mould is being positioned between the two towards the direction of described adhesive surface formation portion from described bearing surface formation portion.

In addition, also can be in the following ways, promptly, described mould is a metal die, described first mould has first recess, the bottom surface of this first recess is a described bearing surface formation portion, described second mould has second recess, the bottom surface of this second recess is a described adhesive surface formation portion, when described first mould overlaps with described second mould, described boundary surface from described bearing surface formation portion on the direction of described adhesive surface formation portion between described first recess and described second recess, when the described butt parts of injection molding, penetrate described thermoplastic elastomer to described first recess and described second recess and come the described butt parts of injection molding.

In addition, described first concave depth can be greater than described second concave depth.

The bed thickness of the limiting scraper restriction developer that developer carrier carried, but when on thickness direction, being positioned at bearing surface one side, may limit the bed thickness of this developer unevenly by the burr of the butt parts of injection molding.Relative therewith, when first concave depth during greater than second concave depth, when injection molding, the burr that produces between first recess and second recess is arranged in adhesive surface one side of described bearing surface and described adhesive surface on described thickness direction, the bed thickness of the developer that therefore can suppress to limit developer carrier unevenly and carried.

In addition, the width of the Width of described first recess can be greater than the width of the Width of described second recess.

When described mould was closed, first mould and second mould overlapped under the situation of relative position dislocation sometimes.Under the width of the Width of first recess situation identical with the width of the Width of second recess, when first mould and the dislocation of second mould overlapped, the generation position of burr was at random easily when injection molding.Relative therewith, under the situation of width greater than the width of the Width of second recess of the Width of first recess, even first recess overlaps under the situation of relative position dislocation with second recess, the generation position of burr can be not at random yet.

In addition, also can be in the following ways, promptly, cut-out is by the both ends of the length direction of the described butt parts of injection molding, repair the shape of these butt parts, when bonding adhesive surface of described butt parts and described support unit, the adhesive surface and the described support unit of the butt parts of coherent shape through revising.

At this moment, because burr is not positioned on the Width of butt parts, therefore can bond more rightly by the adhesive surface and the support unit of the butt parts of injection molding.

In addition, also can be in the following ways, that is, when bonding adhesive surface of described butt parts and described support unit, by the burr of the described butt parts of injection molding not with situation that described support unit contact under the bond adhesive surface and the described support unit of these butt parts.

When by the burr of the described butt parts of injection molding not with situation that described support unit contacts under when the adhesive surface of these butt parts of bonding and described support unit, this adhesive surface and support unit more rightly can bond.

In addition, also can be in the following ways, promptly, when bonding adhesive surface of described butt parts and described support unit, keep described support unit by first anchor clamps, with under the situation that second anchor clamps contact do not kept this butt parts by the burr of the described butt parts of injection molding by these second anchor clamps, make described first anchor clamps that keep described support unit close, thereby make the adhesive surface of described butt parts contact bond described adhesive surface and described support unit with described support unit with described second anchor clamps that keep described butt parts.

When by the burr of the described butt parts of injection molding not with situation that second anchor clamps contact under when keeping these butt parts by these second anchor clamps, because this burr can not be clipped between the butt parts and second anchor clamps, so these butt parts can position rightly with respect to second anchor clamps.

Scraper plate forms mould to have:

First mould, has bearing surface formation portion, this bearing surface formation portion is used to form the bearing surface of the butt parts of limiting scraper, and described limiting scraper and developer carrier butt are with the bed thickness of the developer that limits this developer carrier and carried, and described butt parts are formed by thermoplastic elastomer; And

Second mould, has adhesive surface formation portion, and can move with respect to described first mould, described adhesive surface formation portion is used to form the adhesive surface of described butt parts, described adhesive surface is positioned at a side opposite with described bearing surface on the thickness direction of described butt parts, the support unit bonding that described adhesive surface and described limiting scraper had, described support unit is used to support described butt parts

Here, described first mould overlaps under following situation with described second mould, that is, the boundary surface of described first mould and described second mould is being positioned between the two towards the direction of described adhesive surface formation portion from described bearing surface formation portion.

Form mould according to this scraper plate, can produce adhesive surface and can be bonded in butt parts on the support unit rightly.

First embodiment

Limiting scraper about first embodiment

As previously mentioned, " limiting scraper " is arranged in " developing apparatus " that " image processing system " had, with as the developer roll butt of the example of " developer carrier " bed thickness with the toner that limits this developer roll and carried, described toner is an example of " developer ".

Here, at first for illustrating, example the briefing of image processing system successively developing apparatus, limiting scraper are described then with laser printer (below, be also referred to as printer).

The briefing of image processing system

At first, utilize Fig. 1 and Fig. 2, the formation example of printer 10 and the example of moving are described.Fig. 1 shows the main composition parts that constitute printer 10.Fig. 2 is the block diagram of control module that the printer 10 of Fig. 1 is shown.In Fig. 1, represent above-below direction with arrow, for example, sheet feed stacker 92 is configured in the bottom of printer 10, and fixation unit 90 is configured in the top of printer 10.

The formation example of printer 10

As shown in Figure 1, the printer 10 of present embodiment has along the sense of rotation of the photoreceptor 20 of an example of conduct " image carrier ": charged elements 30; Exposing unit 40; YMCK developing cell 50; Primary transfer unit 60; Intermediate transfer body 70; Cleaning unit 75; And have: secondary transfer printing unit 80; Fixation unit 90; As user oriented notice parts and the display unit 95 that constitutes by liquid crystal panel; And the control said units waits the control module 100 of the action of managing printing machine.

Photoreceptor 20 has conductive substrate material cylindraceous and is formed on photographic layer on the outer peripheral face of this conductive substrate material, this photoreceptor 20 can be that the center is rotated with the central shaft, in the present embodiment, shown in the arrow among Fig. 1, this photoreceptor 20 turns clockwise.

Charged elements 30 is the devices that are used to make photoreceptor 20 charged, and exposing unit 40 is the devices that form sub-image by irradiating laser on charged photoreceptor 20.This exposing unit 40 has semiconductor laser, polygonal mirror, F-θ lens etc., and shines modulated laser according to the image information (picture signal) of main frame inputs such as illustrated personal computer, word processor never to charged photoreceptor 20.

YMCK developing cell 50 is to utilize the toner that is contained in the developing apparatus, promptly, be contained in black (K) toner in the black developing device 51, be contained in magenta (M) toner in the magenta developing apparatus 52, be contained in cyan (C) toner in the cyan developing apparatus 53 and be contained in yellow (Y) toner in the yellow developing apparatus 54, make the device of the image development that on photoreceptor 20, forms.

This YMCK developing cell 50 can make described 4 developing apparatuss 51,52,53,54 shift positions by being rotated under the state that described 4 developing apparatuss 51,52,53,54 are installed.Promptly, this YMCK developing cell 50 keeps described 4 developing apparatuss 51,52,53,54 by 4 maintaining part 55a, 55b, 55c, 55d, and described 4 developing apparatuss 51,52,53,54 can be the center and be rotated under the state that keeps its relative position with central shaft 50a.And, optionally relative when the image formation of 1 page of amount is finished with photoreceptor 20, by the toner that is contained in each developing apparatus 51,52,53,54 sub-image that forms on photoreceptor 20 is developed successively.Described 4 developing apparatuss 51,52,53,54 can load and unload with respect to the described maintaining part of YMCK developing cell 50 respectively.In addition, the back will explain each developing apparatus.

Primary transfer unit 60 is the devices that are used for looking like to be transferred at the monotone toner that forms on the photoreceptor 20 on the intermediate transfer body 70, when the toner of 4 kinds of colors of overlapping transfer printing successively, can form the full-color toner picture on intermediate transfer body 70.

This intermediate transfer body 70 be by be provided with on the surface of PET film tin evaporation layer and and then on its top layer lamination form the endless belt that semi-conductive paint forms, this intermediate transfer body 70 is by to drive with the roughly the same peripheral speed rotation of photoreceptor 20.

Secondary transfer printing unit 80 is to be used for looking like to be transferred to device on the media such as paper, film, cloth with being formed on monotone toner picture on the intermediate transfer body 70 or full-color toner.

Fixation unit 90 is to be used for will being transferred to that monotone toner picture on the medium or full-color toner are fixed on the medium as fusion and the device that forms permanent image.

Cleaning unit 75 is arranged between primary transfer unit 60 and the charged elements 30, it has cleaning balde 76, this cleaning balde 76 is wiped the toner that remains on the photoreceptor 20 off with photoreceptor 20 butts, thereby photoreceptor 20 is cleaned, and cleaning unit 75 is to be used for wiping, remove the device that remains in the toner on the photoreceptor 20 off by cleaning balde 76 after toner being looked like be transferred on the intermediate transfer body 70 by primary transfer unit 60.

As shown in Figure 2, control module 100 is made of master controller 101 and cell controller 102, to master controller 101 received image signals and control signal, cell controller 102 is according to controlling described each unit etc. based on the instruction of this picture signal and control signal, thereby forms image.

That is, the master controller 101 of control module 100 is connected with main frame by interface 112, and has the video memory 113 that is used to store from the picture signal of this main frame input.In addition, cell controller 102 is electrically connected with each unit (charged elements 30, exposing unit 40, YMCK developing cell 50, primary transfer unit 60, cleaning unit 75, secondary transfer printing unit 80, fixation unit 90, display unit 95) of apparatus main body, by receiving the state of each unit is detected from the signal of the sensor that above-mentioned each unit had, and according to controlling each unit from the signal of master controller 101 inputs.

The action example of printer 10

Below, the action of the printer 10 that as above constitutes is described.

At first, when being transfused to the master controller 101 of printer 10 by interface (I/F) 112 from the picture signal of not shown main frame and control signal, cell controller 102 is according to controlling from the instruction of this master controller 101, and photoreceptor 20, developer roll and intermediate transfer body 70 are rotated under this control.Photoreceptor 20 is in rotation, and is charged successively by charged elements 30 on charged position.

Along with the rotation of photoreceptor 20, the charging zone of photoreceptor 20 arrives exposure position, by exposing unit 40, corresponding to first color, for example the sub-image of the image information of yellow Y forms in this zone.In addition, for YMCK developing cell 50, the yellow developing apparatus 54 that holds yellow (Y) toner is positioned on relative with photoreceptor 20 developing location.

Along with the rotation of photoreceptor 20, the sub-image that forms on photoreceptor 20 arrives developing location, and is developed with Yellow toner by yellow developing apparatus 54.Thereby, on photoreceptor 20, form the Yellow toner picture.

Along with the rotation of photoreceptor 20, the Yellow toner picture that forms on photoreceptor 20 arrives the primary transfer position, and is transferred on the intermediate transfer body 70 by primary transfer unit 60.At this moment, primary transfer unit 60 is applied in the primary transfer voltage of the opposite polarity of polarity and toner.During this period, photoreceptor 20 contacts with intermediate transfer body 70, and secondary transfer printing unit 80 separates with intermediate transfer body 70 in addition.

For second color, the 3rd color and the 4th color, carry out above-mentioned processing successively by each developing apparatus, the toner corresponding to four kinds of colors of each picture signal is transferred on the intermediate transfer body 70 as overlapping thus.Thereby on intermediate transfer body 70, form the full-color toner picture.

Along with the rotation of intermediate transfer body 70, the full-color toner picture that is formed on the intermediate transfer body 70 arrives the secondary transfer printing position, and is transferred on the medium by secondary transfer printing unit 80.Transport medium from sheet feed stacker 92 to secondary transfer printing unit 80 by paper feed roller 94, registration rollers 96.In addition, when carrying out transfer operation, secondary transfer printing unit 80 is pressed against on the intermediate transfer body 70 and is applied in secondary transfer printing voltage.

Be transferred to full-color toner picture on the medium by fixation unit 90 heating and pressurizing, be fixed on the medium thereby be melted.

On the other hand, the cleaning balde 76 that photoreceptor 20 is set at after having passed through the primary transfer position in the cleaning unit 75 is wiped off attached to its lip-deep toner, thereby is charged preparing to form next sub-image.The toner T that is wiped off is recycled to the remaining toner recoverer that cleaning unit 75 is had.

The briefing of developing apparatus

Below, utilize Fig. 3 and Fig. 4, the formation example of developing apparatus and the example of moving are described.Fig. 3 is the synoptic diagram of developing apparatus.Fig. 4 is the sectional view that the main composition parts of developing apparatus are shown.Sectional view shown in Figure 4 shows the cross section that obtains with perpendicular to the face intercepting developing apparatus of length direction shown in Figure 3.In Fig. 4, identical with Fig. 1, represent above-below direction with arrow, for example, the central shaft of developer roll 510 is positioned at the below of the central shaft of photoreceptor 20.In addition, figure 4 illustrates the state that yellow developing apparatus 54 is positioned at the developing location relative with photoreceptor 20.

In YMCK developing cell 50, be provided with: hold black (K) toner black developing device 51, hold magenta (M) toner magenta developing apparatus 52, hold the cyan developing apparatus 53 of cyan (C) toner and the yellow developing apparatus 54 that holds yellow (Y) toner, because the structure of each developing apparatus is identical, therefore only yellow developing apparatus 54 is described below.

The formation example of developing apparatus

Yellow developing apparatus 54 has: developer roll 510, last seal member 520, toner accommodating body 530, housing 540, toner supplying roller 550, limiting scraper 560 etc.

Developer roll 510 carrying toner T also are transported to the developing location relative with photoreceptor 20 with it.This developer roll 510 is by manufacturings such as aluminium, stainless steel, iron, and carries out processing such as nickel plating, chromium plating as required.In addition, as shown in Figure 3, along the mode of the length direction of yellow developing apparatus 54 developer roll 510 is set according to length direction.In addition, developer roll 510 can be that the center is rotated with the central shaft, and as shown in Figure 4 to direction (counter clockwise direction in Fig. 4) rotation opposite with the sense of rotation (clockwise direction among Fig. 4) of photoreceptor 20.Its central shaft is positioned at the below of the central shaft of photoreceptor 20.

In addition, when yellow developing apparatus 54 is in relative status with photoreceptor 20, between developer roll 510 and photoreceptor 20, there is the space.That is, yellow developing apparatus 54 makes the image development that forms on photoreceptor 20 under contactless state.In addition, when making the image development that on photoreceptor 20, forms, between developer roll 510 and photoreceptor 20, form alternating electric field.

Last seal member 520 prevents that the toner T in the yellow developing apparatus 54 from leaking into outside the container, and will pass through toner T on the developer roll 510 of developing location to be recovered in the developing apparatus and it is not wiped off.Should go up seal member 520 and be the seal that forms by polyethylene film etc.Last seal member 520 is supported by last sealing supporting metal sheets 522, and is installed on the housing 540 by last sealing supporting metal sheets 522.In addition, last seal member 520, an opposite side with developer roll 510 1 sides be provided with wait by foaming ester (moltopren) forms on seal press member 524, last seal member 520 by the elastic force of last sealing press member 524 by being pressed on the developer roll 510.The butt position of last seal member 520 and developer roll 510 butts is positioned at the top of the central shaft of developer roll 510.

Housing 540 is deposited integrated a plurality of housing section, be upper casing body 542 and lower casing body 544 and manufacture, portion is formed with the toner accommodating body 530 that is used to hold toner T within it.Toner accommodating body 530 is divided into 2 toner accommodating portions, i.e. first 530a of toner accommodating portion and second 530b of toner accommodating portion by next door 545, described next door 545 from inwall to the inside (above-below direction Fig. 4) outstanding and be used to separate toner T.The top of first 530a of toner accommodating portion and second 530b of toner accommodating portion is communicated with, and limits moving of toner T by next door 545 under state shown in Figure 4.But, when YMCK developing cell 50 is rotated, be contained in toner T among first 530a of toner accommodating portion and second 530b of toner accommodating portion and can temporarily concentrate on position one side of connection of top one side of developing location, and when turning back to state shown in Figure 4, these toners T can turn back among first 530a of toner accommodating portion and second 530b of toner accommodating portion after mixing.That is, stirred the toner T in the developing apparatus rightly by the rotation of YMCK developing cell 50.

Therefore, in the present embodiment, mixing component is not set in toner accommodating body 530, but can be provided for stirring the mixing component of the toner T that is contained in the toner accommodating body 530 yet.In addition, as shown in Figure 4, (that is, first 530a of toner accommodating portion) bottom has opening 572 to housing 540, and developer roll 510 adjoins this opening 572 and is provided with.

Toner supplying roller 550 is arranged among aforementioned first 530a of toner accommodating portion, the toner T that this toner supplying roller 550 will be contained in this first toner accommodating 530a of portion supplies with developer roll 510, and peels off residual toner T from developer roll 510 after developing.This toner supplying roller 550 is made by urethane foam etc., and under the state of elastic deformation with developer roll 510 butts.Toner supplying roller 550 is configured in the bottom of first 530a of toner accommodating portion, and the toner T that is contained among first 530a of toner accommodating portion supplies with developer roll 510 in the bottom of this first toner accommodating 530a of portion by toner supplying roller 550.

Toner supplying roller 550 can be that the center is rotated with the central shaft, and its central shaft is positioned at the below of the rotary middle spindle of developer roll 510.In addition, toner supplying roller 550 is to direction (clockwise direction of Fig. 4) rotation opposite with the sense of rotation (counter clockwise direction of Fig. 4) of developer roll 510.

The bed thickness of the toner T that limiting scraper 560 restriction developer rolls 510 are carried, and give the toner T electric charge that developer roll 510 is carried.Limiting scraper 560 has: rubber section 561 is the examples of " layer-thickness restriction member " that are used to limit the bed thickness of the toner that developer roll 510 carried; Rubber bearing portion 566 is examples that are used to support " support unit " of this rubber section 561.The back will explain the structure of limiting scraper 560.

The action example of developing apparatus

In the yellow developing apparatus 54 that as above constitutes, the toner T that toner supplying roller 550 will be contained in the toner accommodating body 530 supplies with developer roll 510.Along with the rotation of developer roll 510, the toner T that supplies with developer roll 510 arrives the butt position of limiting scraper 560, is limited bed thickness and is endowed electric charge when by this butt position.Along with being further rotated of developer roll 510, be limited bed thickness and be endowed toner T on the developer roll 510 of electric charge to arrive the developing location relative with photoreceptor 20, at this developing location, this toner T is used to the development of the sub-image of formation on photoreceptor 20 under alternating electric field.Along with being further rotated of developer roll 510, having passed through toner T on the developer roll 510 of developing location by last seal member 520, and be recovered in the developing apparatus and do not wiped off by seal member on this 520.The toner T that still remains on the developer roll 510 can be divested by described toner supplying roller 550.

The topology example of limiting scraper

Below, utilize Fig. 4～Fig. 8, the topology example of limiting scraper 560 is described.Fig. 5 shows the butt state of limiting scraper 560 and developer roll 510.Fig. 6 is the key diagram that is used to illustrate the structure of limiting scraper 560.Fig. 7 is the stereographic map that the rubber section 561 of limiting scraper 560 is shown.Fig. 8 is the sectional view that rubber section 561 is shown, and shows the cross section that obtains with perpendicular to the face intercepting rubber section 561 of length direction shown in Figure 7.In Fig. 5, represent above-below direction with arrow, in Fig. 6 and Fig. 7, represent the length direction and the Width of rubber section 561 with arrow, in Fig. 8, represent the Width and the thickness direction of rubber section 561 with arrow.

Limiting scraper 560 has rubber section 561 and rubber bearing portion 566, the edge is from the direction setting of the axial end to end of developer roll 510, with the bed thickness of these developer roll 510 butts, give the toner T electric charge that developer roll 510 is carried in addition with the toner T that carried of restriction developer roll 510.

Rubber section 561 is the butt parts by bearing surface 562a and developer roll 510 butts, is used to limit the bed thickness of the toner that this developer roll 510 carried.This rubber section 561 length direction along under the axial situation of developer roll 510 with developer roll 510 butts.In addition, be bonded in the rubber bearing portion 566 by double sticky tape 568 (Figure 20 A) as adhesive surface 563a in the rubber section 561 of the example of " the non-bearing surface " that be positioned at a side opposite on the thickness direction with bearing surface 562a.

In the present embodiment, rubber section 561 is formed by thermoplastic elastomer (specifically, being ether based thermoplastic rubber) that (rubber section 561 is formed by thermoplastic elastomer, strictly speaking, this thermoplastic elastomer is different with rubber, here, for convenience, the parts with label 561 are called rubber section 561).

In addition, as shown in Figure 8, rubber section 561 has: the long leg 562 that the length of its Width is long; With and the short short leg 563 of the length of Width.Long leg 562 is " firsts " that have bearing surface 562a and be positioned at an end one side of thickness direction.Short leg 563 is to have adhesive surface 563a, be positioned at the other end one side of thickness direction and " second portion " that is connected with this long leg 562.

Here, long leg 562 has four faces along the length direction of rubber section 561, that is, and and described bearing surface 562a; Be positioned at the front end face 562b of the Width front end of limiting scraper 560; Be positioned at the rear end face 562c of a side opposite with this front end face 562b; And the end face 562d that is positioned at the opposite side of bearing surface 562a.In addition, short leg 563 has three faces along this length direction, that is, and and described adhesive surface 563a; Be positioned at the end face 563b of front end one side of the Width of limiting scraper 560; And the end face 563c that is positioned at a side opposite with this end face 563b.

And, as shown in Figure 8, long leg 562 in the length L on the Width of rubber section 561 1 (being 6mm in the present embodiment) greater than the length L 2 of short leg 563 on this Width (being 5mm in the present embodiment).In addition, long leg 562 at the length h1 on the described thickness direction (being 1.5mm in the present embodiment) greater than the length h2 (0.5mm) of short leg 563 on described thickness direction.In addition, edge at the bearing surface 562a of long leg 562 is formed with fillet R1 (being also referred to as " first fillet "), edge at the adhesive surface 563a of short leg 563 is formed with fillet R2 (being also referred to as " second fillet "), and the radius-of-curvature of fillet R1 (being about 0.2mm in the present embodiment) is less than the radius-of-curvature (being about 1.0mm in the present embodiment) of fillet R2.And, 10 mean roughness Rz of this bearing surface 562a are less than 10 mean roughness Rz of adhesive surface 563a, in the present embodiment, this bearing surface 562a is shaped as its 10 mean roughness Rz more than or equal to 0.2 μ m and less than 5 μ m, and this adhesive surface 563a is shaped as its 10 mean roughness Rz more than or equal to 5 μ m and less than 15 μ m.The size of above-mentioned length L 1, L2, h1, h2, the size of fillet R1, R2, and the size of 10 mean roughness Rz only is an example, is not limited thereto.

Rubber section 561 is the formed products that are shaped by injection molding (back will be described in detail), can produce unnecessary part on by the rubber section 561 of injection molding, be burr at this.In the present embodiment, as shown in Figure 5 a part of burr 564 also can residually be arranged on the developing apparatus 51,52,53,54 that uses this rubber section 561 to be assembled into.

Here, this burr 564 is described in detail.As shown in Figure 8, the root 564a of burr 564 remains in the edge (this edge also is the edge of front end face 562b or rear end face 562c) of the end face 562d of long leg 562.And, as shown in Figure 7, root 564a end face 562d, be distributed in a end from the length direction of this rubber section 561 to the scope of the other end of length direction along the edge of the length direction of rubber section 561, burr 564 is comprising on the thickness direction: its top is positioned at the burr 564b of bearing surface 562a one side when root 564a observes; And its top is positioned at the burr 564c of adhesive surface 563a one side when root 564a observes.And, all these burr 564b, 564c on the described thickness direction all between bearing surface 562a and adhesive surface 563a, as shown in Figure 5, institute jagged 564 does not all contact with rubber bearing portion 566.In addition, as mentioned above, greater than the length h2 of short leg 563 on described thickness direction, so burr 564 is positioned at adhesive surface 563a one side to long leg 562 on described thickness direction at the length h1 on the described thickness direction.

Rubber bearing portion 566 is metal thin plates of rubber-like such as phosphor bronze, stainless steel, in this rubber bearing portion 566, by between the adhesive surface 563a of rubber section 561 and rubber bearing portion 566, and the adhesive surface 566a (Figure 18) that bonds of rubber section 561 between double sticky tape 568 be bonded with rubber section 561.In addition, rubber bearing portion 566 is installed in (Fig. 4) on the housing 540 by screed support sheet metal 567 under the state of one end by 567 supportings of screed support sheet metal.In addition, be provided with the scraper plate back part 570 that forms by foaming ester etc. in limiting scraper 560, an opposite side with developer roll 510 1 sides.

Here, utilize since the elastic force that deflection produced of rubber bearing portion 566 with rubber section 561 by being pressed on the developer roll 510.In addition, scraper plate back part 570 can prevent that toner T from entering between rubber bearing portion 566 and the housing 540, thereby can stablize because the elastic force that deflection produced of rubber bearing portion 566, and by from the positive back side of rubber section 561 to the direction of developer roll 510 rubber section 561 is exerted pressure and with rubber section 561 by being pressed on the developer roll 510.Therefore, scraper plate back part 570 is connected on the developer roll 510 rubber section 561 more equably.

As shown in Figure 5, limiting scraper 560, with end by the opposite side of screed support sheet metal 567 supporting one side, be that front end (end of bearing surface 562a on the Width of rubber section 561) does not contact with developer roll 510, but contact with developer roll 510 with certain width by part from this front end predetermined distance.That is, limiting scraper 560 (rubber section 561) is by belly rather than edge and developer roll 510 butts.In addition, limiting scraper 560 (rubber section 561) is configured to upstream one side of its front end (end of bearing surface 562a on the Width of rubber section 561) towards the sense of rotation of developer roll 510, promptly so-called reverse (counter) butt.In addition, confinement plate 560 (rubber section 561) is positioned at the below of the central shaft of developer roll 510 with the butt position of developer roll 510 butts, and is positioned at the below of the central shaft of toner supplying roller 550.

Manufacture method about the limiting scraper of first embodiment

Here, utilize Fig. 9～Figure 19, Figure 20 A～Figure 20 D, the manufacture method of the limiting scraper 560 of first embodiment is described.Fig. 9 is the process flow diagram that the manufacturing process of limiting scraper 560 is shown.Figure 10 is the mode chart that an example of emission forming machine 252 is shown.Figure 11 is the mode chart that the outward appearance formation of metal die 202 is shown.Figure 12 is the mode chart that the inner structure of metal die 202 is shown.Figure 13 is the mode chart that the X-X cross section of Figure 12 is shown.Figure 14 is the mode chart that the Y-Y cross section of Figure 12 is shown.Figure 15 is the mode chart that the Z-Z cross section of Figure 12 is shown.Figure 16 is the figure that the rubber section 561 that is formed is shown.Figure 17 illustrates the mode chart that cuts off, removes the state of remainder 565d, handle portion 565e etc. from rubber section 561.Figure 18 is the figure that the adhesive surface 566a of rubber bearing portion 566 is shown.Figure 19 illustrates the mode chart of bonding with anchor clamps 300.Figure 20 A is the figure that is used to illustrate the hold mode of rubber section 561 and rubber bearing portion 566.Figure 20 B is the figure that is used to illustrate the state when rubber section 561 and rubber bearing portion 566 begin to bond.Figure 20 C is the figure that is used to illustrate the state when rubber section 561 and rubber bearing portion 566 press.Figure 20 D is the figure of the bonding that is used to illustrate rubber section 561 and rubber bearing portion 566 state when finishing.

And, the state the when left side of Figure 12 illustrates with the left figure of direction observation Figure 11 of the white arrow shown in the symbol A among Figure 11.State when equally, the right side of Figure 12 illustrates and observes the right figure of Figure 11 with the direction of the white arrow shown in the symbol B among Figure 11.State when in addition, Figure 16 following illustrates and observe the last figure of Figure 16 with the direction of white arrow.In addition, Figure 11 shows the state that metal die 202 is opened, and Figure 13～Figure 15 shows metal die 202 closing state.In addition, in Figure 11～Figure 14, represent vertical with arrow.

At first, utilize emission forming device (in the present embodiment, the device that will have emission forming machine 252 and metal die 202 is called emission forming device, and described metal die 202 is examples scraping plate forming mold (also abbreviating mould as)) rubber section 561 of injection molding (step S102) limiting scraper 560.That is, inject to the metal die 202 from the thermoplastic elastomer of emission forming machine shown in Figure 10 252 with fusion, thus injection molding rubber section 561.

Thermoplastic elastomer is put among the loading hopper 252a of emission forming machine 252, the thermoplastic elastomer of input is heated fusion in penetrating tube 252b.Then, the thermoplastic elastomer that is heated fusion is radiated into the metal die 202 among the mould installation portion 252c that is installed in emission forming machine 252.The thermoplastic elastomer that injects to metal die 202 respectively by as the injection (sprue) 212 of the receiving port of the thermoplastic elastomer that penetrates from emission forming machine 252, as with thermoplastic elastomer from inlet lead cast gate (gate) path runner (runner) 214, as the inlet of cavity 218 water 216 after, be filled in the cavity 218 in the metal die 202.The temperature maintenance of metal die 202 is the temperature lower than the temperature of thermoplastic elastomer, and the thermoplastic elastomer in the metal die 202 is a rubber section 561 by mould 202 cooling postforming.

Here, utilize Figure 11～Figure 16, the shape of the rubber section 561 that is shaped to the structure of above-mentioned metal die 202 with by this metal die 202 describes.

Metal die 202 has fixing metal mold 204 and 206 these two metal die portions of movable metal die portion, described fixing metal mold 204 is examples with the bearing surface formation portion that is used to form described bearing surface 562a " first mould ", and described movable metal die portion 206 has the adhesive surface formation portion that is used to form described adhesive surface 563a and an example of " second mould " that can move with respect to this fixing metal mold 204.As shown in figure 11, fixing metal mold 204 has guide pin bushing (guide bush) 208, movable metal die portion 206 has pilot pin (guidepin) 210, when metal die 202 is closed, be embedded in this guide pin bushing 208 by this pilot pin 210, the relative position of fixing metal mold 204 and movable metal die portion 206 is by hi-Fix.

As previously mentioned, metal die 202 has inlet 212, runner 214, cast gate 216 and cavity 218.

As shown in figure 13, inlet 212 mainly is arranged in the movable metal die portion 206, and its inlet is positioned on the face of a side movable metal die portion 206, opposite with fixing metal mold 204.Inlet 212 runs through movable metal die portion 206 and arrives fixing metal mold 204 from this inlet, in this fixing metal mold 204 with runner 214 adjacency.

Runner 214 is arranged in the fixing metal mold 204, and it has: with the first path 214a of inlet 212 adjacency; Alternate path 214b with this first path 214a adjacency; And with this alternate path 214b in abutting connection with and arrive the 3rd path 214c of cast gate 216.Shown in the left figure of Figure 12, the first path 214a and the 3rd path 214c are along the vertical setting, and alternate path 214b is along the direction setting vertical with vertical.As shown in figure 14, on movable position metal die portion 206, relative with described the 3rd path 214c, be provided with the handle forming section 215 of the handle portion 565e that is used to be shaped.

As the left figure of Figure 12 and shown in Figure 14, on the top of the vertical of fixing metal mold 204, described the 3rd path 214c of cast gate 216 and runner 214 and cavity 218 are in abutting connection with being provided with.

As the left figure of Figure 12 and shown in Figure 14, when cast gate 216 was observed, in the bottom of vertical, cavity 218 and cast gate 216 were in abutting connection with being provided with, and its length direction is along vertical.As shown in figure 15, in fixing metal mold 204, be provided with fixing metal mold slots 205, this fixing metal mold slots 205 is that the bottom surface is the example of the bearing surface formation 205a of portion " first recess ", the described bearing surface formation 205a of portion is used to form the bearing surface 562a of long leg 562, in movable metal die portion 206, be provided with movable metal die groove 207, this movable metal die groove 207 is that the bottom surface is the example of the adhesive surface formation 207a of portion " second recess ", and the described adhesive surface formation 207a of portion is used to form the adhesive surface 563a of short leg 563.

As shown in figure 15, fixing metal mold slots 205 has: the described bearing surface formation 205a of portion; Be used to form the front end face formation 205b of portion of described front end face 562b; And the rear end face formation 205c of portion that is used to form described rear end face 562c.Movable metal die groove 207 has: the described adhesive surface formation 207a of portion; Be used to form the end face formation 207b of portion of the described end face 563b of short leg 563; Be used to form the end face formation 207c of portion of the described end face 563c of short leg 563; And the end face formation 207d of portion that is used to form the described end face 562d of long leg 562.And cavity 218 forms partly and constitutes by being arranged in fixing metal mold slots 205 and the movable metal die groove 207 these.

For the rubber section shown in Figure 8 561 that is shaped, fixing metal mold slots 205 and movable metal die groove 207 are following shape.That is, the degree of depth of fixing metal mold slots 205 is greater than the degree of depth of movable metal die groove 207, and the width of the Width of fixing metal mold slots 205 is greater than the width of the Width of movable metal die groove 207.In addition, be formed with fillet R3, R4 respectively in the bight of fixing metal mold slots 205 and movable metal die groove 207, the radius-of-curvature of the fillet R3 of fixing metal mold slots 205 is less than the radius-of-curvature of the fillet R4 of movable metal die groove 207.In addition, the size of 10 mean roughness of the 205a of bearing surface formation portion is less than the size of 10 mean roughness Rz of the adhesive surface formation 207a of portion.

Under the state (metal die 202 closing state) of fixing metal mold 204 that as above constitutes and 206 coincidences of movable metal die portion, penetrate thermoplastic elastomer to fixing metal mold slots 205 and movable metal die groove 207, thus injection molding rubber section 561.Here, when fixing metal mold 204 and movable metal die portion 206 overlap, this fixing metal mold 204 and should be movable metal die portion 206 boundary surface 221 from the described bearing surface formation 205a of portion towards the direction (above-below direction shown in Figure 15) of the described adhesive surface formation 207a of portion upward in (fixing metal mold slots 205 and movably between the metal die groove 207) between this bearing surface formation 205a of portion and this adhesive surface formation 207a of portion.And, when carrying out injection molding, along on the direction of the length direction of cavity 218, in other words, penetrate thermoplastic elastomer going up along the described direction (in Figure 12, representing this direction) that forms the length direction of part with arrow d.

The rubber section 561 that is shaped by above metal die 202 has shape shown in Figure 16.Different with the rubber section 561 of the limiting scraper 560 (Fig. 6) that developing apparatus had after manufacturing is finished, the rubber section 561 that is formed comprises: the part that is shaped by described injection 212 (in the present embodiment, this part is called inject oral area 565a); Part (in the present embodiment, this part being called flow path portion 565b) by described runner 214 shapings; And by described 216 parts (in the present embodiment, this part being called gate part 565c) that are shaped of watering.

In addition, in this rubber section 561, the length of the length direction of the part that is shaped by cavity 218 be longer than make finish after the length of length direction of rubber section 561 of the limiting scraper 560 (Fig. 6) that developing apparatus had.Promptly, determine the shape of described metal die 202 according to the mode that has remainder 565d when being shaped rubber section 561 at the both ends of the length direction of rubber section 561, this remainder 565d that is formed cuts off, removes from rubber section 561 with injecting oral area 565a, flow path portion 565b and gate part 565c in step described later (step S104).

In the end of the length direction of the rubber section 561 that is formed, with described flow path portion 565b adjoining position on have handle portion 565e.When the rubber section 561 that will be formed was taken out from metal die 202, this handle portion 565e was as the thing of controlling.This handle portion 565e is outstanding from the end of described length direction, and the length direction of its projected direction and rubber section 561 intersects.And this handle portion 565e also cuts off, removes from rubber section 561 with injecting oral area 565a, flow path portion 565b, gate part 565c and remainder 565d in step described later (step S104).

Can produce burr on by the rubber section 561 of injection molding, its reason is as follows.That is, if the pressure when thermoplastic elastomer is radiated into metal die 202 is excessive, fixing metal mold 204 and movable metal die portion 206 can produce distortion.Produce the space thereby cause around cavity 218, (specifically, being described boundary surface 221).Owing to when the thermoplastic elastomer that is penetrated is filled in the cavity 218, also be filled in this space, therefore produced burr.

Here, get back to the process flow diagram of Fig. 9, continue the manufacture method of limiting scraper 560 is described.Thermoplastic elastomer is by the abundant cooling back (step S102) of metal die 202, removes movable metal die portion 206 and opens metal die 202.Then, from metal die 202, take out the rubber section 561 be formed, more particularly, control described handle portion 565e and from the metal die of opening 202, take out rubber section 561.

Then, as shown in figure 17, from the rubber section 561 of taking out, with described remainder 565d with injecting oral area 565a, flow path portion 565b, gate part 565c and handle portion 565e, cut off the shape (step S104) of finishing rubber section 561 at cut-out portion 565f place as the both ends of the length direction of this rubber section 561.Then, preparation is used to support the rubber bearing portion 566 by the rubber section 561 of injection molding, goes up at the described adhesive surface 566a of this rubber bearing portion 566 (oblique line part shown in Figure 180) and pastes double sticky tape 568 (step S106).

Then, prepare the bonding usefulness anchor clamps 300 that use when time on the desired position that rubber section 561 is bonded in rubber bearing portion 566.As shown in figure 19, this bonding with anchor clamps 300 by constituting as the mounting table 310 of an example of first anchor clamps with as the rotatable parts 320 of an example of second anchor clamps, for sticking rubber portion 561 and rubber bearing portion 566, at first, shown in Figure 20 A, the rubber bearing portion 566 that is pasted with double sticky tape 568 is remained on the mounting table 310, and will be remained on (step S108) on the rotatable parts 320 by injection molding and the rubber section 561 of having repaired shape.

Here, the structure of bonding with anchor clamps 300 described.

Shown in Figure 20 A, rubber bearing portion 566 is embedded in in it roughly becomes the recess 311 of identical shaped mounting table 310, thereby by mounting table 310 mountings, maintenance.In rubber bearing portion 566 is embedded into recess 311 and under by the state of mounting, this rubber bearing portion 566 is positioned and can't moves by along continuous straight runs.In addition, mounting table 310 keeps this rubber bearing portion 566 making under the double sticky tape 568 that sticks in the rubber bearing portion 566 state outstanding from recess 311.

Rotatable parts 320 are being located rubber section 561, remain under the state in the recess 321 and can rotate.Shown in Figure 20 A, rubber section 561 is located with respect to rotatable parts 320 under following state, promptly, having long leg 562 only in long leg 562 and the short leg 563 contacts (more particularly with recess 321, the bearing surface 562a of long leg 562 contacts with recess 321 with front end face 562b), and short leg 563 is outstanding from recess 321.In addition, be provided with through hole 322 on position rotatable parts 320, relative with bearing surface 562a that keeps rubber section 561 and on the position relative with front end face 562b, rubber section 561 is passed through through hole 322 by not shown attractions such as vacuum pump.

So, because rubber section 561 is attracted, this rubber section 561 is held and can come off from rotatable parts 320, and has kept the location of rubber section 561 with respect to rotatable parts 320.In the rotatable parts 320 of present embodiment, under rubber section 561 is maintained at state in the recess 321, front end face 562b, contact with recess 321 near the part of bearing surface 562a one side, and burr 564 does not contact with recess 321.

In addition, rotatable parts 320 can be linked rotationally by not shown mechanism and are bearing on the mounting table 310.When rotatable parts 320 rotated, owing to rubber section 561 is attracted, so rubber section 561 was kept also can keeping the location by these rotatable parts 320.

Make the bonding anchor clamps 300 following maintenance rubber section 561 and the rubber bearing portions 566 of said structure.That is, make be pasted with double sticky tape 568 rubber bearing portion 566 on the above-below direction shown in Figure 20 A on mounting table 310 direction recess 311 move and be embedded into this recess 311 and be held.In addition, make by the rubber section 561 of injection molding following direction recess 321 from rotatable parts 320 on described above-below direction and move, it is contacted with this recess 321.Here, when rubber section 561 is contacted with recess 321, owing to attract air in the recess 321 by through hole 322 by described vacuum pump, so the rubber section 561 that contacts with recess 321 is also attracted.Under the state that rubber section 561 is attracted, bearing surface 562a contacts with recess 321 with front end face 562b, locatees, keeps rubber section 561 thus.As mentioned above, since rubber section 561 front end face 562b, keep near being rotated parts 320 under the part of bearing surface 562a one side and recess 321 state of contact, so can with under the situation that rotatable parts 320 contact do not kept this rubber section 561 by the burr 564 of the rubber section 561 of injection molding by rotatable parts 320.

Then, make the rotatable parts 320 that keep rubber section 561 close, thereby make the adhesive surface 563a of rubber section 561 contact bond adhesive surface 563a and rubber bearing portion 566 (step S110) with rubber bearing portion 566 with the mounting table 310 that keeps rubber bearing portion 566.

Specifically, bond in such a way adhesive surface 563a and rubber bearing portion 566.Promptly, the position shown in Figure 20 A (below, be also referred to as " primary importance "), in order to make the rotatable parts 320 that keep rubber section 561 rotatable parts 320 be rotated at leisure near the mounting table 310 that keeps rubber bearing portion 566, so shown in Figure 20 B, an end one side of the Width of adhesive surface 563a at first contacts with double sticky tape 568.Then, by the further rotation of rotatable parts 320, area that adhesive surface 563a contacts with double sticky tape 568 increases, and when rotatable parts 320 turn to precalculated position (below, be also referred to as " second place "), becomes the state shown in Figure 20 C.Under the state shown in Figure 20 C, rubber section 561 and rubber bearing portion 566 become the state of pressing, so rubber section 561 and rubber bearing portion 566 are bonded together effectively by double sticky tape 568.In the present embodiment, shown in Figure 20 B and Figure 20 C, the adhesive surface 563a of rubber section 561 and rubber bearing portion 566 are not bonded under the situation of rubber bearing portion 566 bondings at burr 564.

After rubber section 561 and rubber bearing portion 566 are bonded in together, stop the attraction of described vacuum pump, make the rotatable parts 320 that are positioned at the second place turn to primary importance then.Because described attraction finishes, rubber section 561 no longer is rotated parts 320 and keeps, and therefore shown in Figure 20 D, becomes the rubber bearing portion 566 that is bonded with this rubber section 561 and is positioned in state on the mounting table 310.When rotatable parts 320 were positioned at primary importance, the rubber bearing portion 566 that will bond together with the adhesive surface 563a of rubber section 561 took out from mounting table 310.Thus, can obtain the limiting scraper 560 that adhesive surface 563a is kept rightly by rubber bearing portion 566.Assemble with developer roll 510 grades by the limiting scraper 560 that will so make, can obtain developing apparatus shown in Figure 4.

Validity about limiting scraper 560 grades of first embodiment

As mentioned above, in the limiting scraper 560 of present embodiment, the burr 564 of " layer-thickness restriction member " (rubber section 561) is positioned at " non-bearing surface " (adhesive surface 563a) side of a side opposite with bearing surface 562a on the thickness direction of rubber section 561.Thus, can limit the bed thickness of the toner that developer roll 510 carried equably.Below be described in detail.

As mentioned above, the bed thickness of wishing the toner that limited by rubber section 561 is uniform.Its reason is, under the uneven situation of the bed thickness of toner, for example can produce striped etc. in the toner picture that develops by developer roll 510, thereby cause the quality of toner picture to descend.

Rubber section 561 is a formed products, for example produces burr when carrying out above-mentioned injection molding on rubber section 561 sometimes.Also can consider to remove the burr of this generation, but, not remove this burr sometimes from the angle of the manufacturing process of simplifying rubber section 561.But, do not removing under the situation of deburring, when this burr was positioned near developer roll 510, rubber section 561 may limit the bed thickness of the toner that developer roll 510 carried unevenly.

Utilize Fig. 5 to carry out more specific description.The bed thickness of the toner of butt position in the rubber section 561 restriction space of getting between this rubber section 561 and the developer roll 510 (space A shown in Figure 5) being shot and along with the rotation of developer roll 510 by this rubber section 561.The bed thickness of known this toner depend on the amount of absorbing the toner among the A of space (below, be also referred to as " intake of toner "), for example, when the intake of the toner among the A of space goes up when inhomogeneous in axial (direction identical with the length direction of rubber section 561) of developer roll 510, the amount of the toner that is carried by developer roll 510 at A place, this space also can become inhomogeneous on this is axial, thereby causes the bed thickness of the toner on the developer roll 510 also to become inhomogeneous on this is axial.

At this moment, if burr 564 (for example is positioned at bearing surface 562a one side on the thickness direction of rubber section 561, this burr 564 is positioned on the bearing surface 562a or is positioned at bearing surface 562a one side on front end face 562b), hinder the barrier that toner moves when then this burr 564 can become in the A of space the picked-up toner, thus cause developer roll 510 axially on the intake of toner become inhomogeneous easily.And when the intake of toner was inhomogeneous, the bed thickness of the toner that is limited by rubber section 561 in described butt position also can become inhomogeneous.

Relative therewith, present embodiment as shown in Figure 8 is such, when the burr 564 of rubber section 561 is positioned at adhesive surface 563a one side of an opposite side with bearing surface 562a on described thickness direction, because this burr 564 is difficult to become the barrier that described obstruction toner moves, so can not exert an adverse impact by the interior picked-up of subtend space A toner.Therefore, according to the limiting scraper 560 of present embodiment, can prevent developer roll 510 axially on the intake of toner become inhomogeneous, thereby can limit the bed thickness of the toner that developer roll 510 carried equably.

In addition, as mentioned above, as shown in Figure 9, the manufacture method of the limiting scraper 560 of first embodiment may further comprise the steps: penetrate thermoplastic elastomer to metal die 202 and come injection molding rubber section 561, wherein, metal die 202 is " moulds " with " first mould " (fixing metal mold 204) and " second mould " (movable metal die portion 206), described first mould has the bearing surface formation 205a of portion, this bearing surface formation 205a of portion is used to form the bearing surface 562a of rubber section 561, described second mould has the adhesive surface formation 207a of portion and can move with respect to fixing metal mold 204, the described adhesive surface formation 207a of portion is used to form adhesive surface, fixing metal mold 204 and movable metal die portion 206 overlap under following situation, that is, fixing metal mold 204 is being positioned between the two towards the direction of the adhesive surface formation 207a of portion from the bearing surface formation 205a of portion with the boundary surface 221 of movable metal die portion 206; Bonding is by the adhesive surface 563a of the rubber section 561 of injection molding and " support unit " (rubber bearing portion 566).Thus, the limiting scraper 560 that produces can have high precision.Below, be described in detail.

As mentioned above, the known manufacture method that following limiting scraper 560 is arranged: be formed separately rubber section 561 and rubber bearing portion 566, make the adhesive surface 563a and rubber bearing portion 566 bondings of the rubber section 561 that is formed, thereby obtain limiting scraper 560.Sometimes adopt the method for following shaping rubber section 561: the matrix material (thermoplastic elastomer) that penetrates rubber section 561 to the mould with first mould and second mould comes this rubber section 561 of injection molding.Described first mould has the bearing surface formation portion that is used to form bearing surface 562a, and described second mould has the adhesive surface formation portion that is used to form adhesive surface 563a and can move with respect to first mould.

Under the situation of injection molding rubber section 561, when carrying out injection molding, on the part of the boundary surface of first mould and second mould, be easy to generate burr 564.When bonding had produced the adhesive surface 563a of rubber section 561 of burr 564 and rubber bearing portion 566, this adhesive surface 563a may be bonded in the rubber bearing portion 566 irrelevantly.

Utilize comparative example shown in Figure 21 to be described in detail.As shown in figure 21, in the fixing metal mold 204 of comparative example, be provided with: the bearing surface formation 205a of portion; The front end face formation 205b of portion; The rear end face formation 205c of portion; Be used to form the end face formation 205d of portion of the end face 563b of short leg 563; Be used to form the end face formation 205e of portion of the end face 563c of short leg 563; And the end face formation 205f of portion that is used to form the end face 562d of long leg 562.In movable metal die portion 206, only be provided with the adhesive surface formation 207a of portion.At this moment, when fixing metal mold 204 and 206 coincidences of movable metal die portion, because the boundary surface 221 of this fixing metal mold 204 and movable metal die portion 206 is being positioned at same position with the adhesive surface formation 207a of portion from the bearing surface formation 205a of portion on the direction of the adhesive surface formation 207a of portion, therefore the burr 564 that produces when injection molding is positioned on the adhesive surface 563a (in more detail, for adhesive surface 563a edge).So, when bonding this adhesive surface 563a and rubber bearing portion 566, the burr 564 that produces on adhesive surface 563a contacts with rubber bearing portion 566, thereby between adhesive surface 563a and rubber bearing portion 566, produce the space, so the part of this adhesive surface 563a can't be bonded in the rubber bearing portion 566.The possibility of result can cause the precision of the limiting scraper 560 made to reduce.

Relative therewith, in the present embodiment, in the step of injection molding rubber section 561, as shown in figure 15, the thermoplastic elastomer that penetrates rubber section 561 to metal die 202 comes injection molding rubber section 561, the fixing metal mold 204 of described metal die 202 and movable metal die portion 206 overlap under following situation, that is, boundary surface 221 is being positioned between the two towards the direction (above-below direction shown in Figure 15) of the adhesive surface formation 207a of portion from the bearing surface formation 205a of portion.

In this case, even when carrying out injection molding, on the part of boundary surface 221, produced burr 564, because this burr 564 is positioned at the position of leaving adhesive surface 563a on thickness direction, therefore this adhesive surface of bonding 563a during with rubber bearing portion 566 this burr 564 be difficult to contact with rubber bearing portion 566.Therefore, adhesive surface 563a can be bonded in the rubber bearing portion 566 rightly, thereby produces high-precision limiting scraper 560.

Other embodiments that first embodiment relates to

More than, according to first embodiment image processing system of the present invention etc. being illustrated, the embodiment of foregoing invention is used to make easy to understand of the present invention and non-limiting the present invention.Beyond any doubt, can under the situation that does not break away from its purport, change, improve, and the present invention includes its equivalent the present invention.

In the above-described first embodiment, illustrated on outer peripheral face the structure of photographic layer is set, but be not limited thereto as the cylindric conductive substrate material of the photoreceptor of image carrier.For example, also can be on the surface of strip-shaped conductive matrix material, photographic layer to be set and the so-called sensitization band that constitutes.

And, in the above-described first embodiment,, but be not limited thereto by the injection molding rubber section 561 that is shaped.For example, also can wait the rubber section 561 that is shaped by extrusion molding or flospinning.

But, when being shaped rubber section 561 by injection molding, therefore on by the rubber section 561 of injection molding, be easy to generate burr, make that this burr 564 is positioned at the effect of adhesive surface 563a one side on described thickness direction, promptly limiting the effect of the bed thickness of the toner that developer roll 510 carried equably can be more effective.Therefore, be more preferably above-mentioned first embodiment.

And, in the above-described first embodiment, as shown in Figure 8, the root 564a of burr 564 on the described thickness direction between bearing surface 562a and adhesive surface 563a.And burr 564 is comprising on the described thickness direction: its top is positioned at the burr 564b of bearing surface 562a one side when root 564a observes; And its top is positioned at the burr 564c of adhesive surface 563a one side when root 564a observes.But, be not limited thereto.For example, burr 564 can only comprise that also when root 564a observes its top is positioned at the burr 564c of adhesive surface 563a one side.

But, when burr 564 also comprises burr 564b except this burr 564c, the situation that only comprises burr 564c with burr 564 is compared, and burr 564 arranges on thickness direction unevenly, thus cause developer roll 510 axially on the uneven possibility of bed thickness of toner is increased.Therefore, make that burr 564 is positioned at the effect of adhesive surface 563a one side on described thickness direction, promptly limiting the effect of the bed thickness of the toner that developer roll 510 carried equably can be more effective.Therefore, be more preferably above-mentioned first embodiment.

And in the above-described first embodiment, as shown in Figure 8, rubber section 561 has: " first " (long leg 562), have bearing surface 562a, and be positioned at an end one side of described thickness direction; And " second portion " (short leg 563), have adhesive surface 563a, be positioned at the other end one side of described thickness direction and be connected with this long leg 562.Long leg 562 in the length on the Width of this rubber section 561 (length L 1 shown in Figure 8) greater than the length (shown in Figure 8 length L 2) of short leg 563 on this Width.But, be not limited thereto.For example, long leg 562 also can be less than the length L 2 of short leg 563 on Width in the length L on the Width 1.

And in the above-described first embodiment, as shown in Figure 8, the root 564a of burr 564 is positioned at the edge of face long leg 562, an opposite side with bearing surface 562a (end face 562d).Long leg 562 in the length on the described thickness direction (length h1 shown in Figure 8) greater than the length (shown in Figure 8 length h2) of short leg 563 on described thickness direction.But, be not limited thereto.For example, the root 564a of burr 564 also can be positioned at the edge on end face 562d surface in addition.

But, be positioned at the root 564a of burr 564 under the situation at edge of end face 562d, if make long leg 562 at the length h1 on the thickness direction greater than the length h2 of short leg 563 on thickness direction, then can make this burr 564 on described thickness direction, be positioned at adhesive surface 563a one side by simple structure.Therefore, be more preferably above-mentioned first embodiment.

And in the above-described first embodiment, 10 mean roughness Rz of bearing surface 562a still are not limited thereto less than 10 mean roughness Rz of adhesive surface 563a.For example, ten of bearing surface 562a mean roughness Rz also can be greater than 10 mean roughness Rz of adhesive surface 563a.

But as 10 mean roughness Rz of bearing surface 562a during less than 10 mean roughness Rz of adhesive surface 563a, the concavo-convex of bearing surface 562a diminishes, thereby can limit the bed thickness of the toner that developer roll 510 carried more equably.Therefore, be more preferably above-mentioned first embodiment.

And, in the above-described first embodiment, as shown in Figure 8, be formed with " first fillet " (fillet R1) at the edge of bearing surface 562a, be formed with " second fillet " (fillet R2) at the edge of adhesive surface 563a.The radius-of-curvature of fillet R1 is less than the radius-of-curvature of fillet R2.But, be not limited thereto.For example, the radius-of-curvature of fillet R1 also can be identical with the radius-of-curvature of fillet R2.

But, when the radius-of-curvature of fillet R1 during less than the radius-of-curvature of fillet R2, can make the edge of the bearing surface 562a that is formed with fillet R1 sharp-pointed, the edge toner that will arrive this edge easily of this bearing surface 562a was divided into to the space and moved the flow direction of A and the mobile flow direction beyond the A of this space this moment.Therefore, can in the A of space, absorb toner effectively.Therefore, be more preferably above-mentioned first embodiment.

And in the above-described first embodiment, rubber section 561 is formed by thermoplastic elastomer, but is not limited thereto.For example, rubber section 561 also can be formed by the thermosetting polyurethane.

But, when rubber section 561 is formed by thermoplastic elastomer, this rubber section 561 of injection molding easily.Here, when carrying out injection molding, the thickness of the rubber section 561 that can be shaped accurately (on thickness direction, the length between bearing surface 562a and the adhesive surface 563a).Therefore, when rubber section 561 is formed by thermoplastic elastomer, the rubber section 561 that the precision of the thickness that can be shaped is high.Therefore, be more preferably above-mentioned first embodiment.

And in the above-described first embodiment, described developer carrier is can be " developer carrying roller " (developer roll 510) that the center is rotated with the central shaft, and the length direction of rubber section 561 is axial along developer roll 510.In addition, the root 564a of burr 564 on the described thickness direction between bearing surface 562a and adhesive surface 563a, burr 564 is comprising on the described thickness direction: its top is positioned at the burr 564b of bearing surface 562a one side when root 564a observes; And its top is positioned at the burr 564c of adhesive surface 563a one side when root 564a observes.And as shown in Figure 7, burr 564 is distributed in a end from the length direction of rubber section 561 to the scope of the other end of length direction.But, be not limited thereto.For example, burr 564 also can only be positioned on the part of length direction of rubber section 561, for example on the central portion of this length direction.

When burr 564 comprises burr 564b and burr 564c, as mentioned above, developer roll 510 axially on the uneven possibility of bed thickness of toner is increased.And, when burr 564 is distributed in the scope of the other end from an end of described length direction to described length direction, developer roll 510 axially on the easier bed thickness of toner that makes inhomogeneous.At this moment, make that burr 564 is positioned at the effect of adhesive surface 563a one side on described thickness direction, promptly limiting the effect of the bed thickness of the toner that developer roll 510 carried equably can be more effective.Therefore, be more preferably above-mentioned first embodiment.

And, in the above-described first embodiment, as shown in Figure 5, developing apparatus 51,52,53,54 have be used for and adhesive surface 563a bonding with " support unit " (rubber bearing portion 566) of support rubber portion 561.And institute jagged 564 does not all contact with rubber bearing portion 566.But, be not limited thereto.For example, the part of burr 564 also can contact with rubber bearing portion 566.

Under the part of burr 564 and situation that rubber bearing portion 566 contacts, when bonding adhesive surface 563a and rubber bearing portion 566, for example, burr 564 may contact with rubber bearing portion 566, thereby between adhesive surface 563a and rubber bearing portion 566, produce the space, cause the part of adhesive surface 563a not to be bonded in the rubber bearing portion 566.At this moment, the possibility that rubber section 561 is bearing in the rubber bearing portion 566 irrelevantly increases, thus may cause rubber section 561 irrelevantly with developer roll 510 butts.Relative therewith, when institute jagged 564 when all contact, owing to adhesive surface 563a and rubber bearing portion 566 bond rightly, so rubber section 561 can be bearing in the rubber bearing portion 566 rightly with rubber bearing portion 566.Therefore, be more preferably above-mentioned first embodiment.

And in the above-described first embodiment, as shown in Figure 4, the butt position of rubber section 561 and developer roll 510 butts is positioned at the below of the central shaft of developer roll 510.Rubber section 561 is according to an end of its Width mode and this developer roll 510 butts towards the upstream of the sense of rotation of developer roll 510 side, and a described end is left in described butt position on described Width.But, be not limited thereto.For example, described butt position also can be the described end on the described Width.

In addition, in the above-described first embodiment, as shown in figure 15, the degree of depth of " first recess " (fixing metal mold slots 205) still is not limited thereto greater than the degree of depth of " second recess " (movable metal die groove 207).For example, the degree of depth of fixing metal mold slots 205 also can be less than the degree of depth of movable metal die groove 207.

As mentioned above, the bed thickness of the toner that limiting scraper 560 restriction developer rolls 510 are carried, but when on thickness direction, being positioned at bearing surface 562a one side, may limit the bed thickness of this toner unevenly by the burr of the rubber section 561 of injection molding.Relative therewith, under the situation of the degree of depth greater than the degree of depth of movable metal die groove 207 of fixing metal mold slots 205, the burr 564 that produces between this fixing metal mold slots 205 and this movable metal die groove 207 when carrying out injection molding is arranged in adhesive surface 563a one side of bearing surface 562a and adhesive surface 563a on described thickness direction, therefore can suppress to limit unevenly the bed thickness of the toner that developer roll 510 carried.

And in the above-described first embodiment, as shown in figure 15, the width of the Width of fixing metal mold slots 205 still is not limited thereto greater than the width of the Width of movable metal die groove 207.For example, the width of the Width of fixing metal mold slots 205 also can be identical with the width of the Width of movable metal die groove 207.

When metal die 202 was closed, fixing metal mold 204 and movable metal die portion 206 overlapped under the situation of relative position dislocation sometimes.At this moment, under the width of the Width of fixing metal mold slots 205 situation identical with the width of the Width of movable metal die groove 207, if fixing metal mold 204 misplaces with movable metal die portion 206 and overlaps, then when carrying out injection molding the generation position of burr at random easily (, burr is positioned at long leg 562 sometimes, is positioned at short leg 563 sometimes).Under the situation at random easily of the generation position of burr, need consider design rubber section 561 on the basis at random, thereby may produce too much restriction design.Relative therewith, when the width of the Width of fixing metal mold slots 205 during greater than the width of the Width of movable metal die groove 207, even fixing metal mold 204 and movable metal die portion 206 overlap under the situation of relative position dislocation, the generation position of burr 564 can (that is, burr only can not be positioned on the long leg 562) at random yet.Therefore, be more preferably above-mentioned first embodiment.

And in the above-described first embodiment, as shown in Figure 9, the manufacture method of limiting scraper 560 is further comprising the steps of: cut off by " both ends " of the length direction of the rubber section 561 of injection molding (565f of cut-out portion), repair the shape of this rubber section 561.In the step of the adhesive surface 563a of sticking rubber portion 561 and rubber bearing portion 566, the adhesive surface 563a and the rubber bearing portion 566 of the rubber section 561 of having repaired shape bondd.But, be not limited thereto.For example, the manufacture method of limiting scraper 560 also can not comprise both ends that cut off rubber section 561 and the step of repairing the shape of this rubber section 561.

But, cutting off by the 565f of cut-out portion of the rubber section 561 of injection molding and repairing under the situation of shape of this rubber section 561, because burr can not be positioned on the Width of rubber section 561, so the adhesive surface 563a of sticking rubber portion 561 and rubber bearing portion 566 more rightly.Therefore, be more preferably above-mentioned first embodiment.

And, in the above-described first embodiment, shown in Figure 20 B and Figure 20 C, in the step of the adhesive surface 563a of sticking rubber portion 561 and rubber bearing portion 566, by the burr 564 of the rubber section 561 of injection molding not with situation that rubber bearing portion 566 contacts under the adhesive surface 563a and the rubber bearing portion 566 of this rubber section 561 of bonding, but be not limited thereto.For example, also can be by bonding adhesive surface 563a and rubber bearing portion 566 under the part of the burr 564 of the rubber section 561 of injection molding and the situation that rubber bearing portion 566 contacts.

But, when by the burr 564 of the rubber section 561 of injection molding not with situation that rubber bearing portion 566 contacts under when bonding adhesive surface 563a and rubber bearing portion 566, adhesive surface 563a and rubber bearing portion 566 more rightly can bond.Therefore, be more preferably above-mentioned first embodiment.

And in the above-described first embodiment, shown in Figure 20 A and Figure 20 D, the adhesive surface 563a of sticking rubber portion 561 and the step of rubber bearing portion 566 may further comprise the steps: keep rubber bearing portion 566 by " first anchor clamps " (mounting table 310); By the burr 564 of the rubber section 561 of injection molding not with situation that " second anchor clamps " (rotatable parts 320) contact under, keep rubber section 561 by rotatable parts 320; Make the mounting table 310 that keeps rubber bearing portion 566 close, thereby make the adhesive surface 563a of rubber section 561 contact bond adhesive surface 563a and rubber bearing portion 566 with rubber bearing portion 566 with the rotatable parts 320 that keep rubber section 561.But, be not limited thereto.For example, also can kept rubber section 561 by rotatable parts 320 by under the part of the burr 564 of the rubber section 561 of injection molding and the situation that rotatable parts 320 contact.

If under the part of burr 564 and situation that rotatable parts 320 contact, keep rubber section 561 by rotatable parts 320, then burr 564 may be clipped between rubber section 561 and the rotatable parts 320 when keeping when rubber section 561 by rotatable parts 320, and this moment, rubber section 561 failed accurately to position with respect to rotatable parts 320.Relative therewith, when by the burr 564 of the rubber section 561 of injection molding not with situation that rotatable parts 320 contact under when keeping rubber section 561 by rotatable parts 320, because burr 564 can not be clipped between rubber section 561 and the rotatable parts 320, so rubber section 561 can appropriately position with respect to rotatable parts 320.Therefore, be more preferably above-mentioned first embodiment.

Second embodiment

Limiting scraper about second embodiment

Here, other embodiments (limiting scraper of second embodiment) to limiting scraper describe." limiting scraper " is arranged in " developing apparatus " that " image processing system " had, with the bed thickness of developer roll butt with the toner that limits this developer roll and carried, because the content of image processing system and developing apparatus and the explanation of first embodiment is roughly the same, therefore in this description will be omitted.

Limiting scraper 1560 has the function of the charged charged plates of toner T that developer roll 510 is carried concurrently and limits the function of the bed thickness of this toner T.As Figure 22 and shown in Figure 23, this limiting scraper 1560 has live part 1562 and support unit 1564.

Live part 1562 with the state of developer roll 510 butts under give this toner T electric charge that developer roll 510 is carried, make this toner T charged.In the present embodiment, described toner T can be by these live part 1562 frictions when the position by live part 1562 and described developer roll 510 butts and electron gain, thereby electronegative.Then, this toner T is in the development of the sub-image that is used under the electronegative state form on photoreceptor 20.That is it is electronegative that, the live part 1562 of present embodiment makes described toner T.

And this live part 1562 is formed by thermoplastic elastomer, this thermoplastic elastomer in charged sequence than more close opposite polarity polarity one side charged of urethane rubber (that is positive polarity one side) with making toner.The back will explain the material of this live part 1562.

In addition, as shown in figure 22, live part 1562, be short and small shape to the cross sectional shape of length direction, this live part 1562 (is thin plate 1564a described later) along the state support of the length direction of support unit 1564 described later with described length direction more precisely, on this support unit 1564.

And the manufacturing process as the live part 1562 with above-mentioned cross sectional shape for example has flospinning, extrusion molding, injection molding etc., can adopt above-mentioned any method without restriction.In the present embodiment, because live part 1562 forms by thermoplastic elastomer, therefore when employing ejection forming method in above-mentioned manufacturing process, can high precision, the live part 1562 that is shaped and to have intended shape easily.

Support unit 1564 is made of thin plate 1564a and the 1564b of thin-plate supporting portion, is supported with described live part 1562 at an end 1564d (that is the end of thin plate 1564a one side) of its Width.Thin plate 1564a is the metal parts of rubber-like such as phosphor bronze, stainless steel, and exerting pressure by it makes the described live part 1562 and developer roll 510 butts that is supported by this thin plate 1564a.The 1564b of thin-plate supporting portion is the sheet metal of the other end 1564e that is configured in the Width of support unit 1564, with support described thin plate 1564a, be installed on this thin plate 1564a with the state of the end of the opposite side of a side of supporting live part 1562.And the material of thin plate 1564a is not limited to above-mentioned metal, as other materials, can use macromolecular materials such as plastics.In addition, in the present embodiment, by double sticky tape etc. with described live part 1562 bondings, be fixed on the described thin plate 1564a, but be not limited thereto.For example, also can handle the live part 1562 that is shaped by dropping into to inside to be cured after the metal die that thin plate 1564a is arranged penetrates the thermoplastic elastomer that dissolves.

And limiting scraper 1560 is installed on this fixator under the state of the both ends 1564c of the length direction of the 1564b of thin-plate supporting portion by not shown fixator supporting.

The material of live part 1562

As the material of live part 1562, can adopt macromolecular materials such as urethane rubber or thermoplastic elastomer.Here, the definition to urethane rubber in the present embodiment and thermoplastic elastomer describes.

Macromolecular material comprises elastic body (elastic body of broad sense (elastomer)) with caoutchouc elasticity and the inelastic body (plastomer (plastomer)) that does not have caoutchouc elasticity.The variation of the material during according to heating, described elastic body is divided into rubber and thermoplastic elastomer, and described inelastic body is divided into plastics and thermoset resin.In the present embodiment, in described elastic body, the elastic body (that is, showing heat cured elastic body) that will solidify from flow state owing to heating is defined as rubber, to be defined as thermoplastic elastomer from the elastic body of solid state liquidation (that is, showing the thermoplastic elastomer body) owing to heating.Urethane rubber belongs to described rubber, and is defined as the material that is formed by Polyurethane resins.

Thermoplastic elastomer is easy to processing owing to having thermoplasticity, when this material is used as the material of described live part 1562, can be shaped as the live part 1562 of intended shape accurately.And, when thermoplastic elastomer during as the material of live part 1562, is compared with the situation that adopts described urethane rubber, the installation accuracy height when described live part 1562 is installed, thereby can make this live part 1562 more appropriate with developer roll 510 butts.

But,, be inferior to described urethane rubber at aspects such as wearing qualities though thermoplastic elastomer has above-mentioned advantage.Therefore, when adopting the live part 1562 that is formed by described thermoplastic elastomer, the butt pressure when being difficult to this live part 1562 with described developer roll 510 butts is brought up to and identical degree when adopting the live part 1562 that is formed by urethane rubber.Therefore, be difficult to make described toner T charged rightly, thereby might cause finally being formed on the deterioration of the image on the medium.

Therefore, in the present embodiment, employing can address the above problem and be suitable for use as the thermoplastic elastomer of the material of live part 1562.Here, utilize Figure 24 that the thermoplastic elastomer of present embodiment is described.Figure 24 shows elastic body Ea1, Ea2, the Ea3 of ether system, elastic body Eb1, Eb2, the Eb3 of ester system, urethane rubber U1, U2, U3, U4, and the position of toner T in charged sequence of present embodiment.In Figure 24, represent the positive negative direction of charged polarity with arrow, easy more positively charged material is the closer to positive polarity one side, and easy more electronegative material is the closer to negative polarity one side.For example, urethane rubber U1 is easier to be more positively charged than urethane rubber U2, and when making described urethane rubber U1 and described urethane rubber U2 mutually during mutual friction, urethane rubber U1 can be positively charged, and urethane rubber U2 can be electronegative.

Thermoplastic elastomer by show soft section of significant caoutchouc elasticity with constitute as mutually hard section of molecule constraint, elastic body Ea1, Ea2, the Ea3 of so-called ether system is as described soft section and comprise the elastic body of polyethers, and elastic body Eb1, Eb2, the Eb3 of so-called ester system are as described soft section and comprise the elastic body of polyester.In the developing apparatus of present embodiment, has the live part 1562 that the elastic body Ea1 by the system of the described ether in the thermoplastic elastomer forms.

When and when adopting thermoplastic elastomer Ea1 as the material of live part 1562, as mentioned above, therefore the live part 1562 that can high precision is shaped and to have intended shape is compared with the situation that adopts urethane rubber U1, U2, U3, U4, can obtain the high live part of installation accuracy 1562.

In addition, as shown in figure 24, the elastic body Ea1 of described ether system in charged sequence than urethane rubber U1, U2, U3, U4 near positive polarity one side.Here, in the present embodiment,, therefore in charged sequence,, make the charged ability of described toner T high more the closer to positive polarity one side because toner T is used for the development of sub-image under electronegative state.When adopting the live part 1562 that forms by the high material of charged ability, can set this live part 1562 and the butt pressure of developer roll 510 less.Here, the elastic body Ea1 of ether system makes the charged ability of toner T be higher than urethane rubber U1, U2, U3, U4, therefore when the live part 1562 that adopts the elastic body Ea1 that is by this ether to form, the size when not needing that described butt pressure brought up to the live part 1562 that employing forms by urethane rubber U1, U2, U3, U4 respectively.That is, the live part 1562 that is formed by thermoplastic elastomer Ea1 can be at the electric charge of giving the toner T abundance on the developer roll 510 under the situation that does not produce wearing and tearing.Thus, when thermoplastic elastomer Ea1 was used as the material of live part 1562, forming accuracy was higher than urethane rubber.Can when bringing into play this original advantage of thermoplastic elastomer effectively, obtain to make the charged rightly live part of toner T 1562.

In addition, in the present embodiment, adopt the elastic body Ea1 of ether system as the material of live part 1562, but be not limited thereto.For example, also can adopt the elastic body Eb1 of ester system.But when the elastic body (for example, the elastic body Eb1 that the ester among Figure 24 is) of relatively elastic body of ether system (for example, the elastic body Ea1 of the ether system among Figure 24) and ester system, the former is more superior aspect insulativity, is suitable for use as the material of live part 1562.And, because polyethers is different with polyester, hydrolysis can not take place, therefore the live part 1562 that forms of the elastic body that is by ether can suppress the timeliness deterioration that causes owing to hydrolysis.Based on above each point, as the material of live part 1562 and the elastic body of preferred ether system.

In addition, in the present embodiment, live part 1562 still is not limited thereto by making toner T electronegative and forms near the thermoplastic elastomer of positive polarity one side than urethane rubber in charged sequence.For example, also can use in charged sequence than urethane rubber or thermoplastic elastomer developer near positive polarity one side, make this developer positively charged (that is, in image processing system, this developer is used for the development of sub-image under positively charged state) by described live part 1562.At this moment, can use the live part 1562 that forms near the thermoplastic elastomer of negative polarity one side (for example, the elastic body Eb3 of the elastic body Ea3 of ether system shown in Figure 24 or ester system) than urethane rubber by in described charged sequence.

The formation of image formation system etc.

Below, with reference to accompanying drawing embodiment as " image formation system " of an example of embodiment of the present invention is described.

Figure 25 is the key diagram that the outward appearance formation of image formation system is shown.Image formation system 700 comprises: computing machine 702, display device 704, printer 10, input media 708 and reading device 710.

In the present embodiment, computing machine 702 is contained in mini tower (mini tower) the type cabinet, but is not limited thereto.Cathode-ray tube (CRT)), plasma display or liquid crystal indicator etc. display device 704 is general to adopt CRT (Cathode Ray Tube:, but be not limited thereto.Printer 10 adopts the printer of above-mentioned explanation.In the present embodiment, input media 708 adopts keyboard 708A and mouse 708B, but is not limited thereto.In the present embodiment, reading device 710 adopts floppy disk drive unit 710A and CD-ROM drive unit 710B, but is not limited thereto.For example, also can adopt MO (Magneto Optical) disk drive or DVD (Digital VersatileDisk) to wait other devices.

Figure 26 is the block diagram that the formation of image formation system shown in Figure 25 is shown.In the cabinet that accommodates computing machine 702, also be provided with the external memory storage of internal storages 802 such as RAM and hard disk drive 804 etc.

In the above description, printer 10 is connected with computing machine 702, display device 704, input media 708 and reading device 710 and composing images forms the example of system and describes, but is not limited thereto.For example, image formation system also can be made of computing machine 702 and printer 10, and image formation system also can not comprise any one in display device 704, input media 708 and the reading device 710.

In addition, printer 10 for example also can have the function separately of computing machine 702, display device 704, input media 708 and reading device 710 or the part of mechanism.As an example, printer 10 can have: carry out the image processing part of Flame Image Process, the recording medium handling part etc. of carrying out the display part of various demonstrations and being used to load and unload recording medium, described recording medium recording is by the view data of photographies such as digital camera.

As entire system, as above the image formation system of Shi Xianing is better than existing system.

Claims (17)

1. a layer-thickness restriction member is characterized in that,

Have:

Bearing surface is with the developer carrier butt, to limit the bed thickness of the developer that this developer carrier carried; And

Burr is positioned at non-bearing surface one side of an opposite side with described bearing surface on the thickness direction of described layer-thickness restriction member;

The root of described burr on the described thickness direction between described bearing surface and described non-bearing surface,

Described burr comprises on described thickness direction:

Its top is positioned at the burr of described bearing surface one side when described root is observed; And its top is positioned at the burr of described non-bearing surface one side when described root is observed.

2. layer-thickness restriction member as claimed in claim 1 is characterized in that,

Have:

First possesses described bearing surface, is positioned at an end one side of described thickness direction; And

Second portion possesses described non-bearing surface, is positioned at the other end one side of described thickness direction and is connected with described first;

Described first in the length on the Width of described layer-thickness restriction member greater than the length of described second portion on this Width.

3. layer-thickness restriction member as claimed in claim 2 is characterized in that,

The root of described burr is positioned at the edge on the surface of described first, and described surface is positioned at a side opposite with described bearing surface,

Described first in the length on the described thickness direction greater than the length of described second portion on described thickness direction.

4. layer-thickness restriction member as claimed in claim 1 is characterized in that,

10 mean roughness of described bearing surface are less than 10 mean roughness of described non-bearing surface.

5. layer-thickness restriction member as claimed in claim 1 is characterized in that,

Be formed with first fillet at the edge of described bearing surface,

Be formed with second fillet at the edge of described non-bearing surface,

The radius-of-curvature of described first fillet is less than the radius-of-curvature of described second fillet.

6. layer-thickness restriction member as claimed in claim 1 is characterized in that,

Described layer-thickness restriction member is formed by thermoplastic elastomer.

7. a layer-thickness restriction member is characterized in that,

Have:

Bearing surface is with the developer carrier butt, to limit the bed thickness of the developer that this developer carrier carried; And

Burr is positioned at non-bearing surface one side of an opposite side with described bearing surface on the thickness direction of described layer-thickness restriction member;

Here,

The root of described burr on the described thickness direction between described bearing surface and described non-bearing surface,

Described burr comprises on described thickness direction:

Its top is positioned at the burr of described bearing surface one side when described root is observed; And its top is positioned at the burr of described non-bearing surface one side when described root is observed;

Have:

First possesses described bearing surface, is positioned at an end one side of described thickness direction; And

Second portion possesses described non-bearing surface, is positioned at the other end one side of described thickness direction and is connected with described first;

Described first in the length on the Width of described layer-thickness restriction member greater than the length of described second portion on this Width,

The root of described burr is positioned at the edge on the surface of described first, and described surface is positioned at a side opposite with described bearing surface,

Described first in the length on the described thickness direction greater than the length of described second portion on described thickness direction,

10 mean roughness of described bearing surface are less than 10 mean roughness of described non-bearing surface,

Be formed with first fillet at the edge of described bearing surface,

Be formed with second fillet at the edge of described non-bearing surface,

The radius-of-curvature of described first fillet is less than the radius-of-curvature of described second fillet,

Form by thermoplastic elastomer.

8. a developing apparatus is characterized in that,

Have:

Developer carrier is used for bearing developer; And

Layer-thickness restriction member has: with the bearing surface of described developer carrier butt with the bed thickness of the developer that limits this developer carrier and carried; And the burr that on the thickness direction of described layer-thickness restriction member, is positioned at non-bearing surface one side of an opposite side with described bearing surface;

Described developer carrier is can be the developer carrying roller that the center is rotated with the central shaft,

The length direction of described layer-thickness restriction member is axial along described developer carrier,

The root of described burr on the described thickness direction between described bearing surface and described non-bearing surface,

Described burr comprises on described thickness direction:

Its top is positioned at the burr of described bearing surface one side when described root is observed; And its top is positioned at the burr of described non-bearing surface one side when described root is observed;

Described burr is distributed in a end from the length direction of described layer-thickness restriction member to the scope of the other end of length direction.

9. developing apparatus as claimed in claim 8 is characterized in that,

Have support unit, be used for described non-bearing surface bonding supporting described layer-thickness restriction member,

All described burrs all do not contact with described support unit.

10. the manufacture method of a limiting scraper is characterized in that,

May further comprise the steps,

Step 1:

Penetrate thermoplastic elastomer to mould and come injection molding butt parts,

Described mould has first mould and second mould, described first mould has bearing surface formation portion, this bearing surface formation portion is used to form the bearing surface of the butt parts of limiting scraper, described limiting scraper and developer carrier butt are with the bed thickness of the developer that limits this developer carrier and carried, and described butt parts are formed by described thermoplastic elastomer; Described second mould has adhesive surface formation portion, and can move with respect to described first mould, described adhesive surface formation portion is used to form the adhesive surface of described butt parts, and described adhesive surface is positioned at a side opposite with described bearing surface on the thickness direction of described butt parts;

Described first mould overlaps under following situation with described second mould, that is, the boundary surface of described first mould and described second mould is being positioned between the two towards the direction of described adhesive surface formation portion from described bearing surface formation portion,

Step 2:

Bonding is by the support unit that adhesive surface and described limiting scraper had of the described butt parts of injection molding, and described support unit is used to support described butt parts.

11. the manufacture method of limiting scraper as claimed in claim 10 is characterized in that,

Described mould is a metal die,

Described first mould has first recess, and the bottom surface of this first recess is a described bearing surface formation portion,

Described second mould has second recess, and the bottom surface of this second recess is a described adhesive surface formation portion,

When described first mould overlaps with described second mould, described boundary surface from described bearing surface formation portion on the direction of described adhesive surface formation portion between described first recess and described second recess,

When the described butt parts of injection molding, penetrate described thermoplastic elastomer to described first recess and described second recess and come the described butt parts of injection molding.

12. the manufacture method of limiting scraper as claimed in claim 11 is characterized in that,

Described first concave depth is greater than described second concave depth.

13. the manufacture method as claim 11 or 12 described limiting scrapers is characterized in that,

The width of the Width of described first recess is greater than the width of the Width of described second recess.

14. the manufacture method as claim 11 or 12 described limiting scrapers is characterized in that,

Cut-out is by the both ends of the length direction of the described butt parts of injection molding, the shape of repairing these butt parts,

When bonding adhesive surface of described butt parts and described support unit, the adhesive surface and the described support unit of the butt parts of coherent shape through revising.

15. the manufacture method as claim 11 or 12 described limiting scrapers is characterized in that,

When bonding adhesive surface of described butt parts and described support unit,

By the burr of the described butt parts of injection molding not with situation that described support unit contacts under the adhesive surface and the described support unit of the described butt parts of bonding.

16. the manufacture method of limiting scraper as claimed in claim 15 is characterized in that,

When bonding adhesive surface of described butt parts and described support unit,

Keep described support unit by first anchor clamps,

By the burr of the described butt parts of injection molding not with situation that second anchor clamps contact under, keep this butt parts by these second anchor clamps,

Make described first anchor clamps that keep described support unit close, thereby make the adhesive surface of described butt parts contact bond described adhesive surface and described support unit with described support unit with described second anchor clamps that keep described butt parts.

17. a scraper plate forms mould, it is characterized in that,

Have:

First mould, has bearing surface formation portion, this bearing surface formation portion is used to form the bearing surface of the butt parts of limiting scraper, and described limiting scraper and developer carrier butt are with the bed thickness of the developer that limits this developer carrier and carried, and described butt parts are formed by thermoplastic elastomer; And

Second mould, has adhesive surface formation portion, and can move with respect to described first mould, described adhesive surface formation portion is used to form the adhesive surface of described butt parts, described adhesive surface is positioned at a side opposite with described bearing surface on the thickness direction of described butt parts, the support unit bonding that described adhesive surface and described limiting scraper had, described support unit is used to support described butt parts

Here, described first mould overlaps under following situation with described second mould, that is, the boundary surface of described first mould and described second mould is being positioned between the two towards the direction of described adhesive surface formation portion from described bearing surface formation portion.

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