CN101650536B - Electronic photographic photoreceptor - Google Patents
Electronic photographic photoreceptor Download PDFInfo
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- CN101650536B CN101650536B CN2009101653606A CN200910165360A CN101650536B CN 101650536 B CN101650536 B CN 101650536B CN 2009101653606 A CN2009101653606 A CN 2009101653606A CN 200910165360 A CN200910165360 A CN 200910165360A CN 101650536 B CN101650536 B CN 101650536B
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Abstract
The present invention provides a photoreceptor which can restrain the raise of the friction coefficient between the sealing component and the photoreceptor from the initial stage of image formation, can stably uses a scraper to remove the remanet toner and the adhered exogenous impurity on the photoreceptor surface for a long time, and simultaneously can prevent the leakage of the removed toner and exogenous impurity from both terminal portions of the scraper, to form a high quality image after a long time. The electronic photographic photoreceptor at least has a photosensitive layer on the conductive substrate, which is characterized in that a grinding portion is provided in the image forming region portion of the photoreceptor surface, and a non grinding portion is provided in the non-image forming region portion at both terminals.
Description
Technical field
The present invention relates to Electrophtography photosensor, more particularly, the electrophotographic image that relates at duplicating machine, laser beam printer, facsimile recorder etc. forms the Electrophtography photosensor that uses in the device.
Background technology
In recent years, electrophotographic image forms device and utilizes the electrophotographic image forming method, and the development of having used this electrophotographic image to form the information handling system machine of device has conspicuousness.So-called electrophotographic image forms device, is to use the electrophotographic image forming method to go up the device that forms image at recording medium (for example recording chart, OHP sheet material etc.).Example as electrophotographic image formation device comprises for example electrophotographic copier, electrophotographic printer (for example laser printer, LED printer etc.), facsimile unit, word processor and their compounding machine (multi-function printer etc.).
As the photoreceptor that uses in the laser printer that forms device at these electrophotographic images, the digital duplicating machine etc.; The inorganic photoreceptor that once used has used mineral compounds such as selenium compound; But in recent years; Use easy exploitation can tackle the material of various wavelength light and, begun to be widely used to the Organophotoreceptor of the little organic compound of the influence of environment.
With regard to the electrophotographic image that has used the electrophotographic image forming method forms device (below be also referred to as image processing system); Outer peripheral face to the Electrophtography photosensor of the rotary drum shape of utilizing charged mechanism uniform charged (below be also referred to as photoreceptor); Carry out the selectivity exposure corresponding, form electrostatic latent image with image information.Then, utilize developing mechanism to make this latent electrostatic image developing, form toner image with toner (developer).Then, this toner image is transferred to recording medium and forms image.Then, the developer etc. that remains in the outer peripheral face of photoreceptor after utilizing cleaning mechanism with the toner image transfer printing is removed.Be cleaned the photoreceptor of mechanism cleaning of outer peripheral face is supplied with the image of next time and formed.That is, the surface for form the employed photoreceptor so far of image with image processing system has formed image through charged, exposure, development, transfer printing, the so a series of repetition operations of cleaning.
In the image processing system that has utilized the electrophotographic image forming method, in order to prevent adhering to of unnecessary toner, reduce the amount of the remaining toner after the transfer printing simultaneously, the research of having carried out making the friction factor of photosensitive surface to reduce.Being informed in thus with scraper or brush will not have transfer printing and remains in toner cleaning on the photoreceptor time to be difficult to take place cleaning bad etc.Also know owing to can reduce the amount of the remaining toner after the transfer printing, therefore also obtain to reduce the amount of used toner, maybe can reduce the moment of torsion that drives photoreceptor, can reduce the such effect of seeing from the environment aspect of consumes electric power of image processing system.
Usually, the cleaning of the transfer printing remaining toner on the photoreceptor is used following method: make the scraper that is formed by urethane rubber etc. along the opposite direction butt, utilize scraper that toner is removed.
On the other hand, follow the high image quality requirement in market in recent years, use the exploitation of the polymerization toner of manufacturings such as emulsion polymerization, suspension polymerization developing.But such polymerization toner is compared with unsetting toner and is caused that more easily cleaning is bad etc., becomes the main cause of the image deterioration that is caused by toner film forming, welding etc., and cleaning more and more requires high precision.
Photosensitive surface and scraper form by resin, therefore lack lubricity, because photosensitive surface is level and smooth, so the scraper counter-rotating, it is bad to be easy to generate cleaning.As the bad countermeasure of such cleaning, thus known to friction factor being reduced to photosensitive surface interpolation lubricant.As lubricant, known teflon etc. contain the powder of the resin (below be called fluororesin) of fluorine atom, spherical acryl resin, polyvinyl resin etc., metal oxide powders such as monox, aluminium oxide, lubricity liquid such as silicone oil etc.The fluororesin that particularly contains fluorine atom in a large number is because surface energy is significantly little, therefore big as the effect of lubricant.But when these methods of employing reduced friction factor, because the long-time butt of scraper, friction factor slowly rose sometimes, and the friction rising with scraper produces rough sledding such as scraper singing, crimping.
In addition, as other method, thus the known method that reduces through the contact area surperficial asperitiesization of photoreceptor is feasible and scraper.For example, known after the superiors that formed photoreceptor, grind the photoreceptor (with reference to patent documentation 1) that the surface of photoreceptor forms with membranaceous abrasive article.
Known to making polishing particles and have the surface collision of the photoreceptor of cylindric supporting mass, conductive layer, charge generating layer and charge transport layer, thus the photoreceptor (with reference to patent documentation 2) of asperities processing is carried out on the surface of photoreceptor.
As record in patent documentation 1, the patent documentation 2, milled processed is carried out and asperitiesization in the surface of photoreceptor, also can suppress the effective ways of the generation of scraper singing, crimping etc. even this is long-time use, but have following shortcoming.
Usually, scraper is provided in the cleaning device, cleaning device has peristome between cleaning framework and the scraper by the cleaning element that cleans the framework supporting.And cleaning device constitutes as follows: reclaim the remaining toner of removing from photoreceptor through scraper by peristome, be received in the cleaning framework.And, owing to prevent length direction at scraper, therefore have the structure that has disposed containment member according to mode with the both ends butt of photoreceptor from scraper end leakage remaining toner.
On the surface of photoreceptor, be attached with foreign matter (being designated hereinafter simply as foreign matter) that reactant that chemical change produced that the toner that remains in photosensitive surface, ozone etc. causes etc. adheres to etc.
Under situation with the surperficial asperitiesization of photoreceptor, the surface of the two end portions of the photoreceptor of containment member butt, the lubricant that oozes out reduces because of grinding; Therefore beginning friction factor from first printing rises; Raise with the friction of containment member, produce crimping, or take place damaged; Therefore judge the toner on the surface that remains in photoreceptor of removing and spill, break down attached to the foreign matter of photosensitive surface two end portions from scraper with scraper.
Because such situation; Hope the photoreceptor that exploitation is following: use the photoreceptor that on conductive base, has photographic layer at least; When forming image; Can begin to suppress the rising of the friction factor of containment member and photoreceptor from the initial stage that image forms; Can be long-term and stably remove, when removing, can prevent simultaneously the toner and the scraper two ends leakage of foreign matter removed from can form high quality images for a long time from cleaning device with the toner that remains in photosensitive surface with attached to the foreign matter on the surface of photoreceptor.
Patent documentation 1: the spy opens the 2003-307859 communique
Patent documentation 2: the spy opens the 2006-267856 communique
Summary of the invention
The present invention accomplishes in view of above-mentioned condition; Its purpose is, rising that the initial stage that forms from image begins to suppress the friction factor of containment member and photoreceptor is provided, can will remain in the toner of photosensitive surface with scraper long-term and stably and toner that the foreign matter that adheres to is removed, can be prevented simultaneously to have removed and foreign matter from the both ends leakage of scraper, can form the photoreceptor of high quality images for a long time.
The object of the invention is realized by following constituting.
1. Electrophtography photosensor has photographic layer at least on conductive base, it is characterized in that, the surperficial outermost layer of above-mentioned photoreceptor has grind section in its surperficial image forming area portion, and the regional portion of non-image formation at two ends has not grind section.
2. above-mentioned 1 described Electrophtography photosensor is characterized in that, the axial length of above-mentioned not grind section is 0.5mm～20mm from the end of photoreceptor.
3. above-mentioned 1 described Electrophtography photosensor is characterized in that, the amount of grinding of above-mentioned grind section is 0.01 μ m～0.3 μ m on the outermost thickness direction in surface.
4. above-mentioned 1 described Electrophtography photosensor; It is characterized in that; The abrasive surface of above-mentioned grind section; The average length (RSm) of the surfaceness curve element of this photoreceptor on the direction vertical with the photoreceptor driving direction is 1.21 μ m～16.0 μ m, and the degree of bias (Rsk) of the surfaceness curve of this photoreceptor on the direction vertical with the photoreceptor driving direction is-3.0～0.0.
5. above-mentioned 1 or 2 described Electrophtography photosensors is characterized in that, above-mentioned photographic layer is made up of the charge transport layer of charge generating layer and setting above that, and the surperficial outermost layer of above-mentioned Electrophtography photosensor is a charge transport layer.
6. above-mentioned 1 or 2 described Electrophtography photosensors is characterized in that, the surperficial outermost layer of above-mentioned Electrophtography photosensor is a protective seam.
7. above-mentioned 6 described Electrophtography photosensors is characterized in that above-mentioned protective seam contains particulate.
8. above-mentioned 7 described Electrophtography photosensors is characterized in that, above-mentioned particulate is at least a kind of inorganic particles that is selected from silicon dioxide, aluminium oxide, titanium dioxide and strontium titanates.
7. wantonly 1 described Electrophtography photosensor is characterized in that in above-mentioned 1～6, and the surperficial outermost layer of above-mentioned Electrophtography photosensor contains silicone oil.
8. above-mentioned 7 described Electrophtography photosensors is characterized in that, above-mentioned particulate is at least a kind of inorganic particles that is selected from silicon dioxide, aluminium oxide, titanium dioxide and strontium titanates.
9. above-mentioned 1 described Electrophtography photosensor is characterized in that, the surperficial outermost layer of above-mentioned Electrophtography photosensor contains silicone oil.
10. above-mentioned 1 described Electrophtography photosensor is characterized in that, on above-mentioned electric conductivity supporting mass, sets gradually middle layer, charge generating layer, charge transport layer, protective seam and forms.
11. above-mentioned 1 described Electrophtography photosensor is characterized in that, above-mentioned electric conductivity supporting mass is banded or cylindric electric conductivity supporting mass.
The photoreceptor that is described below can be provided; The initial stage that promptly forms from image begins to suppress the rising of the friction factor of containment member and photoreceptor; The foreign matter that can will remain in the toner of photosensitive surface with scraper long-term and stably and adhere to is removed; Can prevent simultaneously that toner and the foreign matter removed from leaking from the both ends of scraper, can form high quality images for a long time.
Description of drawings
Fig. 1 is the skeleton diagram of the formation of the expression electrophotographic image image forming part that forms device.
Fig. 2 is the skeleton diagram of the manufacturing installation of residual both ends of the present invention and the photoreceptor that the part that will contact with scraper component grinds away.
Fig. 3 is that expression uses manufacturing installation shown in Figure 2 to grind the general flowchart of step on the surface of photoreceptor.
Fig. 4 is to use the skeleton diagram of the photoreceptor of manufacturing installation manufacturing shown in Figure 2.
Symbol description
The 1-image forming part, 2-photoreceptor, 201-photographic layer, 8-cleaning device, 801-supporting frame, 802-axle; The 803-cleaning doctor, 804-containment member, 9-manufacturing installation, 9a-lapping device, 9a1-main body; 9a2,9b1-pallet, 9a3,9b2-base station, 9a4-abrasive article, 9b-holding device, 9b11-retaining member; The 9b13-maintaining body, the O-image forming area, P1, the non-image formation of P2-zone, Q-width, M-be the length of grind section not.
Embodiment
The photoreceptor that the present invention relates to; The initial stage that forms from image begins to suppress the rising of the friction factor of containment member and photoreceptor; The foreign matter that can will remain in the toner of photosensitive surface with scraper long-term and stably and adhere to is removed; Simultaneously can prevent that these foreign matters from spilling from the both ends of scraper, can form high quality images for a long time.
Remove easily and to carrying out abrasive method in the surface of photoreceptor in order to make at the surperficial remaining toner of photoreceptor and the foreign matter that adheres to; In patent documentation 1, patent documentation 2, all have openly, but leak not open as for the foreign matter that prevents simultaneously to have removed from the scraper two ends.
The width of the face of the photoreceptor that the inventor is conceived to grind has considered only to grind the scheme at both ends of photoreceptor of face and not grinding-in member institute butt of the photoreceptor of scraper institute crimping.
In the present invention; Use has the photoreceptor of photographic layer at least on conductive base; When the foreign matter that the reactant that chemical change produced that causes at the surperficial remaining toner of photoreceptor, by ozone etc. with scraper accompanying image being formed etc. adheres to is removed, prevent that foreign matter from leaking from the scraper two ends.
And; Have the photoreceptor of the abrasive surface of this scheme through use, can provide and can be long-term and stably the foreign matter attached to photosensitive surface be removed, can prevent when the removing of foreign matter simultaneously that the foreign matter of having removed from leaking from the scraper both ends of cleaning device and can form the photoreceptor of high quality images for a long time.
The scheme of through becoming that such face to the crimping of scraper institute grinds and not the face of containment member institute butt not being ground; Form on the surface of photoreceptor and countless image to be formed the little groove of the degree that does not constitute obstacle, infer when image forms, will to remain in this sulculus by additive, the lubricant of toner supply.Accompany therewith, the rising of the friction factor of scraper is inhibited, and can stably remove foreign matter, prevents the crimping of scraper, and the moment of torsion of photoreceptor is stable.
On the other hand; The face of containment member institute butt is not supplied to toner; Therefore do not have the supply of additive, lubricant, but the lubricity material (for example silicone oil etc.) that is present in the photographic layer surface when under situation about peelling off because of grinding not, making the photoreceptor coating exists, infer that the rising of the friction factor of containment member is inhibited; Prevent the crimping (Burr) of containment member, prevent that foreign matter from leaking from the scraper both ends.
That is, under the situation that grind on the whole surface of the photoreceptor that in to prior art, uses, owing to grind in the part of containment member butt; Therefore the lubricity material of surface existence is few; And owing to also there is not the supply of toner, so the friction factor of containment member rises, and therefore produces the crimping of containment member; The defunctionalization of containment member can not prevent that foreign matter from leaking from the scraper both ends.
Like this; In the present invention through only the surface of the photoreceptor of scraper crimping being ground, form beginning from image after, at surface and the scraper and the containment member of photoreceptor; Can keep stable friction factor for a long time; Stably remove foreign matter, and prevent that foreign matter from leaking from the scraper two ends, can form high quality images for a long time.
Below according to Fig. 1～Fig. 4 to the detailed description of the invention.
Fig. 1 is the skeleton diagram of the formation of the image forming part of expression electrophotographic image formation device.Fig. 1 (a) is the summary sectional view of the formation of the expression electrophotographic image image forming part that forms device.Fig. 1 (b) is the general view of the photoreceptor shown in Fig. 1 (a).Fig. 1 (c) is at the cleaning doctor of the framework installation of the cleaning device shown in Fig. 1 (a) and the general view of containment member.
In the drawings, 1 presentation video formation portion.Image forming part 1 dispose photoreceptor 2, the side face of photoreceptor 2 to photoreceptor 2 give the charged device 3 of electric charge, the exposure device 4 that produces image light, developing apparatus 5, as the toner image that will form at the periphery of photoreceptor 2 from photoreceptor 2 be transferred to the transfer means on the recording chart charged device 6, with the electric charge of recording chart remove and from photoreceptor 2 separate recording charts remove electrical equipment 7 and as the cleaning device 8 of cleaning mechanism.
Developing apparatus 5 has: accommodate the developer D that contains toner and carrier and through the rotation of the direction shown in the arrow transport developer development sleeve 501, form development usefulness developer the tip fixedly magnetite 502, developer that restriction is transported quantitative limitation member 503 and mix toner and carrier and make the charged developer agitating member 504 of toner.
According to the rotation of photoreceptor 2 along the direction of arrow, give uniform electric charge through charged device 3 to photoreceptor 2, through exposure device 4 the image light exposure is formed electrostatic latent image on photoreceptor 2.With the latent electrostatic image developing that forms, on photoreceptor 2, form toner image T1 through developing apparatus 5.Electrostatic force with the charged generation of charged device 6 is transferred to toner image T1 on the recording chart P., be transported to fuser (not shown) and carry out the photographic fixing processing through removing the recording chart P that electrical equipment 7 removes electricity from photoreceptor 2 separation.
Remaining toner T2 on the photoreceptor after the transfer printing 2, but through cleaning device 8 remaining toner T2 is removed from photoreceptor 2.
In cleaning device 8, the long supporting frame 801 as supporting member on the turning axle direction of photoreceptor 2 is configured to the rotating shaft parallel with photoreceptor 2, is supported with free rotation mode by axle 802 at the axial two ends of the rotation of photoreceptor 2.At an end of supporting frame 801, will be bonding and fixing by its base portion to the cleaning doctor that elastomeric plate constituted 803 that forms by urethane rubber that photoreceptor 2 cleans.In addition, at the two ends of cleaning doctor 803, with preventing that the containment member 804 that toner leaks from the two ends of cleaning doctor 803 is installed on the supporting frame 801.In addition, the hammer 805 as compression joint mechanism is set, makes the cleaning edge of the front end of cleaning doctor 803 compress into row crimping often with certain contact with respect to photoreceptor 2 at the other end of supporting frame 801.
At the upstream side (with respect to the sense of rotation of photoreceptor 2) of cleaning doctor 803, dispose and contact gently with photoreceptor 2 and accept roller 806 according to the toner that the mode that its surface of contact and photoreceptor 2 move along same direction is rotated.Toner is accepted roller 806 and is had the rotation axial length identical with photoreceptor 2.In addition, scrape and get plate 807 and accept roller 806 with toner and contact, be set to the toner that toner is accepted on the roller 806 is wiped off.
Use rubber elastomer as cleaning doctor; As its material; Known have urethane rubber, silicon rubber, fluororubber, neoprene (Network ロ ロ ピ レ Application go system), BR etc., but wherein urethane rubber and other rubber phase specific wear excellents are preferred especially in this respect.
Remain in the toner T2 on the photoreceptor 2 after the transfer printing; Be removed from photoreceptor 2 through cleaning doctor 803; Accept roller 806 through toner and get the bottom that plate 807 is transported to cleaning device 8, be transported to the outside of cleaning device 8 through toner conveying structure (not shown) with scraping.
O representes to be developed and on photoreceptor 2, formed the image forming area of toner image T1 by developing apparatus 5.Forming toner image T1 at image forming area O, also is to be transferred to the zone that has remaining toner T2 behind the recording chart P.
P1 representes the non-image formation zone that does not form toner image T1 of the end of photoreceptor 2.P2 representes the non-image formation zone that does not form toner image T1 of the other end of photoreceptor 2.
As containment member; Do not have special qualification, for example can enumerate and on elastic substrate (for example elastomeric plates such as PET (polyethylene terephthalate), phosphor bronze, stainless steel), be bonded with the porous matter elastic component (member of モ Le ト プ レ one Application (trade name), felt, nylon loop etc. for example.
1) on the electric conductivity supporting mass successively layer close as the charge generating layer of photographic layer layer formation with charge transport layer and protective seam,
2) on the electric conductivity supporting mass successively layer close layer formation as the individual layer that contains charge transport materials and electric charge generating material of photographic layer and protective seam,
3) on the electric conductivity supporting mass successively layer close the middle layer, as the charge generating layer of photographic layer layer formation with charge transport layer and protective seam,
4) on the electric conductivity supporting mass successively layer close the middle layer, as the layer formation of the individual layer that contains charge transport materials and electric charge generating material of photographic layer and protective seam.
Photoreceptor of the present invention can be above-mentioned any layer of formation, middle layer, charge generating layer, charge transport layer, protective seam wherein preferably is set and the photoreceptor made on the electric conductivity supporting mass.
The present invention relates to following photoreceptor; Promptly form the friction factor of the cleaning doctor 803 that is crimped on image forming area O when finishing image is formed and the friction factor of the containment member that contact with the regional P1 of non-image formation (P2) rises to image when image forms beginning, can carry out the two ends leakage of toner that stable image forms and prevent to remove from cleaning doctor 803.
Fig. 2 is the skeleton diagram of the manufacturing installation of residual both ends of the present invention and photoreceptor that the part that contacts with scraper component is ground.Fig. 2 (a) is the approximate three-dimensional map of the manufacturing installation of residual both ends of the present invention and photoreceptor that the part that contacts with scraper component is ground.Fig. 2 (b) is the summary sectional view along the A-A ' of Fig. 2 (a).Having, the method for grinding photoreceptor is not had special qualification, can be that known method such as abrasive method are carried out in method, the jet grinding agent of for example using the lapping sheet that is coated with abrasive particle.Originally illustrate the method for using lapping sheet.
Among the figure, 9 expression manufacturing installations.Manufacturing installation 9 has the holding device 9b of lapping device 9a and photoreceptor 2.
Lapping device 9a has main body 9a1, pallet 9a2 and base station 9a3.Main body 9a1 has the tension-adjusting gear (not shown) that spins device (not shown), take-up mechanism (not shown) and abrasive article of abrasive article 9a4.Have again, have drive division, have tension-adjusting gear spinning device (not shown) side in take-up mechanism (not shown) side.
9a41 representes to be arranged at the roller shape abrasive article that spins device (not shown).9a42 representes to batch the abrasive article that uses on the roller through take-up mechanism (not shown).9a11～9a13 representes deflector roll.Deflector roll 9a11,9a13 are preferably disposed on main body 9a1 so that can regulate the tension force of abrasive article 9a4.9a14 representes take up roll.Batched on the roller by take-up mechanism (not shown) through take up roll from spinning the spun abrasive article 9a4 of device (not shown).Have again; Abrasive article 9a4 when grinding photoreceptor 2 surperficial in identical position since the wearing and tearing of the abrasive surface of abrasive article, the obstruction of abrasive surface etc. sometimes can not be stable grinding, therefore preferably will batch the abrasive surface renewal through take-up mechanism (not shown) as required.
Main body 9a1 is fixed in and has the mobile pallet 9a2 with axle 9a21 that is connected with travel mechanism's (for example stepping motor), and pallet 9a2 can move (direction of arrow Y direction among the figure) along the shifting chute 9a31 that base station 9a3 has.
About moving of pallet 9a2; Can regulate travel mechanism so that the surface of the face of the abrasive article 9a4 on the take up roll and photoreceptor 2 butt abreast, the kind that the contact pressure during butt can be through the abrasive article that uses, the skin hardness of photoreceptor 2, amount of grinding etc. are suitably regulated.
9b14 representes to be equipped on the motor on the pallet 9b1, and the turning axle of motor 9b14 is connected with the maintaining body 9b13 of retaining member 9b11, through making motor 9b14 work, can make photoreceptor 2 rotations that kept by retaining member.
Rotating speed can suitably be set according to the contact pressure of kind, abrasive article 9a4 and the photoreceptor 2 of abrasive article 9a4, amount of grinding etc.
What 9b15 represented to be connected with travel mechanism's (for example stepping motor) is mobile with axle, is provided in the opposition side of the pallet 4b1 that is equipped with motor 9b14.The work of pallet 9b1 through travel mechanism's (for example stepping motor), the shifting chute that can have on the base station 9b2 moves (direction of arrow X-direction among the figure).The translational speed of pallet 9b1 can be according to suitably settings such as the contact pressure of kind, abrasive article 9a4 and the photoreceptor 2 of the abrasive article 9a4 that uses, amount of grinding.In addition, amount of movement can suitably be regulated according to the width of the abrasive areas of photoreceptor 2.
Manufacturing installation 9 expression lapping device 9a shown in this figure carry out the situation that quadrature moves to Y direction, holding device 9b to X-direction, but also can be that lapping device 9a carries out quadrature to X-direction, holding device 9b to Y direction and moves.
Abrasive article to using does not have special qualification, can suitably select according to lapping device.The situation of the banded abrasive article that on banding substrate, has abrasive particle has been used in this figure expression.Abrasive particle as using can use SiC, Al
2O
3, Fe
2O
3, adamas etc.The size of abrasive particle, shape can suitably be selected according to the surfaceness after grinding.
In addition, the grinding chip that produces in order to prevent to grind adheres to abrasive surface again, preferably the face that will grind is carried out air and sprays and attract.More preferably after grinding end, carry out the cleaning (the for example injection of air, scratch brushing etc.) of abrasive surface.
The amount of grinding of grind section is preferably 0.01 μ m～0.3 μ m at the thickness direction of superficial layer.If less than 0.01 μ m, the effect of the generation of the inhibition scraper singing that asperitiesization produced by milled processed, crimping etc. becomes not enough.If greater than 0.3 μ m, the tendency that exists surfaceness to become superfluous, the edge abrasion of scraper increases the weight of, and becomes the bad reason of cleaning.
The abrasive surface of grind section; Preferably the average length RSm of the surfaceness curve element of this photoreceptor is 1.2 μ m～16.0 μ m on the direction vertical with the photoreceptor driving direction, and the degree of bias (Skewness) Rsk of the surfaceness curve of this photoreceptor on the direction vertical with the photoreceptor driving direction is-3.0～0.0.
Surface through making grind section is above-mentioned scope, and toner particle can not get into the roughness on surface during printing, and only captures lubricant, keeps for a long time, obtains can a certain amount of lubricant be anchored at the effect on the surface of photoreceptor thus.
The degree of bias Rsk of the average length RSm of surfaceness curve element and surfaceness curve defines according to " JIS B0601:2001 ".
Fig. 3 is that expression uses manufacturing installation shown in Figure 2 to grind the general flowchart of step on the surface of photoreceptor.
In step 1, prepare to be applied in the abrasive article 9a4 of the required tension force of the take up roll 9a14 of lapping device 4a (with reference to Fig. 2).In addition, photoreceptor 2 is remained on holding device 9b (with reference to Fig. 2), move the pallet of holding device 9b (with reference to Fig. 2), make take up roll 9a14 consistent with the grinding starting position.
In step 2, lapping device 4a (with reference to Fig. 2) move so that the abrasive article 9a4 on the take up roll 9a14 avoid photoreceptor 2 end (non-image formation zone) and with surperficial butt.Have, contact pressure is suitably regulated according to the skin hardness of the kind of the abrasive article that uses, photoreceptor 2, amount of grinding etc. again.Behind the butt, photoreceptor 2 rotations begin to grind.The part of being represented by oblique line among the figure is meant the zone through grinding.Rotating speed is suitably set according to the contact pressure of kind, abrasive article 9a4 and the photoreceptor 2 of abrasive article 9a4, amount of grinding etc.
In step 3, abrasive article 9a4 and photoreceptor 2 butts, the pallet of mobile holding device 9b (with reference to Fig. 2) under the state of photoreceptor 2 rotations changes the abrasion site of photoreceptor 2.The part of being represented by oblique line among the figure is meant the zone through grinding.
In step 4, abrasive article 9a4 and photoreceptor 2 butts, the pallet of mobile holding device 4b (with reference to Fig. 2) under the state of photoreceptor 2 rotation, the abrasion site that makes photoreceptor 2 is further changed by the position of step 2.The part of being represented by oblique line among the figure is meant the zone through grinding.
In step 5; Abrasive article 9a4 and photoreceptor 2 butts; The pallet of mobile holding device 9b (with reference to Fig. 2), moves lapping device 9a (with reference to Fig. 2) and also finishes after having ground required amount of grinding to the position of the end (non-image formation zone) of residual photoreceptor 2 under the state of photoreceptor 2 rotations; The butt on the abrasive article on the releasing take up roll 9a14 and the surface of photoreceptor 2 finishes to grind.The part of being represented by oblique line among the figure is meant the zone through grinding.After finishing to grind, cleaning (for example injection air) is attached to the grinding chip of abrasive surface.
Make both ends shown in Figure 4 (non-image formation zone) through step 1～step 4 and have the not photoreceptor of grind section.
Fig. 4 is the skeleton diagram with the photoreceptor of manufacturing installation manufacturing shown in Figure 2.
Among the figure, 2 ' expression photoreceptor, the conductive base of 201 ' expression photoreceptor 2 '.202 ' is illustrated in and is used for that photoreceptor 2 ' is installed on electrophotographic image with revolvable mode and forms the bolster that the end of the conductive base 201 ' of device (not shown) is provided with.Also be provided with identical bolster in the other end.The not grind section of the end of 203 ' expression photoreceptor 2 ', 204 ' expression grind section.Have again, equally also have not grind section in opposed end.Grind section 204 ' is equivalent to image forming area, and the not grind section 203 ' at two ends is equivalent to non-image formation zone.
M representes from the length of the axial not grind section 203 ' of the end of the photographic layer that forms at conductive base 201 '.With regard to the length M of grind section not, consider the length of end seal material and cleaning doctor etc., be preferably 0.5mm～20mm.
Through such shown in this figure, the image forming area that is formed on photoreceptor is provided with grind section and makes non-image the formations zone at two ends is the photoreceptor of the shape of grind section not, can enumerate following effect.
1. form device and carry out long image when forming when photoreceptor being installed to electrophotographic image; Begin to end from image formation; The moment of torsion change of the photoreceptor that does not accompany with the rising of the friction factor of crimping, scraper and the containment member of the scraper of cleaning device can be carried out stable image and form.
2. form device and carry out long image when forming when photoreceptor being installed to electrophotographic image; Begin to end from image formation; Leak the electrophotographic image accompany from the scraper two ends with the toner of removing with scraper and form pollution in the device, toner and on image, adhere to disappearance, can carry out stable image and form.
Below the formation of the preferred concrete photoreceptor that uses among the present invention is described.
< electric conductivity supporting mass >
As the electric conductivity supporting mass that uses in the present invention, use banded or cylindric supporting mass, from the easy property of the design of image processing system, preferably drum shape supporting mass.So-called cylindric electric conductivity supporting mass is meant and can ring-type forms the required supporting mass cylindraceous of image, preferred 5～40 μ m of cylindricity, more preferably 7～30 μ m through rotation.
As the material of electric conductivity supporting mass, can use the metal rotary drum of aluminium, nickel etc., perhaps vapor deposition the plastics rotary drum of aluminium, tin oxide, indium oxide etc., perhaps be coated with the paper/plastics rotary drum of conductive material.As the electric conductivity supporting mass, the resistivity under the preferred normal temperature is 10
3Below the Ω cm.
As the matrix of banded photoreceptor, for example can enumerate and carry out the matrix that aluminium-vapour deposition, indium/tin-oxide form on the surface of polyimide resin, vibrin, polycarbonate resin etc.
< middle layer >
The middle layer is applied on the conductive base and dry formation through being formed by the middle layer that bonding agent, dispersion solvent etc. constitutes with coating fluid.As the bonding agent in middle layer, can enumerate polyamide, vestolit, vinyl acetate resin and contain the copolymer resin more than 2 in the repetitive of these resins.In these resins, polyamide reduces owing to making with using residual electric potential increase together repeatedly, therefore preferably.In addition, be purpose to improve potential property, minimizing black spot defect, minimizing ripple etc., also can in the middle layer, add adjuvants such as fillers such as titanium dioxide, zinc paste, antioxidant as required.
Form solvent as making the middle layer, preferably with the inorganic particulate fine dispersion of adding as required and with the fat-solvent solvent of polyamide resin with coating fluid.Particularly, the alcohols of carbon numbers 2～4 such as methyl alcohol, ethanol, n-propanol, isopropyl alcohol, normal butyl alcohol, the tert-butyl alcohol, sec-butyl alcohol, excellent aspect the dissolubility of polyamide and coating performance, therefore preferred.These solvents all are being preferably 30 quality %～100 quality % in the solvent, and more preferably 40 quality %～100 quality % further are preferably 50 quality %～100 quality %.Obtain the cosolvent of preferred effect as also using, can enumerate benzylalcohol, toluene, methylene chloride, cyclohexanone, tetrahydrofuran etc. with above-mentioned solvent.The preferred 0.2 μ m of the thickness in middle layer～40 μ m, more preferably 0.3 μ m～20 μ m.
(photographic layer)
Photographic layer can be to make 1 layer have the single layer structure of electric charge generation function and charge transfer function, but more preferably takes the function of photographic layer is separated into the layer structure of charge generating layer (CGL) and charge transport layer (CTL).Through the formation of taking function is separated, can be with to use residual electric potential increase together to be controlled at repeatedly low-level, easily according to other electrofax characteristics of purpose control.For the photoreceptor of electronegative usefulness, take the structure that charge generating layer (CGL) is arranged on the middle layer, charge transport layer (CTL) arranged above that.For the photoreceptor that positively charged is used, take order that above-mentioned layer constitutes with electronegative with the opposite formation of the situation of photoreceptor.It is the electronegative photoreceptor with above-mentioned functions isolating construction that the layer of preferred photographic layer constitutes.
Below each layer of the photographic layer of function separating belt negative electricity photoreceptor described.
< charge generating layer (CGL) >
Contain electric charge generation material (CGM) in the charge generating layer (CGL).As other materials, can contain adhesive resin, other adjuvants as required.As electric charge generation material (CGM); Known electric charge generation material (CGM) promptly has the maximum diffraction peak 27.2 ° of Bragg angles (2 θ ± 0.2) in the X-ray diffraction that utilizes CuK α line TiOPc, this 2 θ are at 12.4 ° of CGM such as benzimidazole perylene with maximum peak; Existence and use deterioration together hardly repeatedly can make the residual electric potential increase reduce.
When in charge generating layer (CGL), using bonding agent as the dispersion medium of electric charge generation material (CGM); Can use known resin as bonding agent; But, can enumerate methylal resin, butyral resin, organic siliconresin, organic-silicon-modified butyral resin, phenoxy resin etc. as most preferred resin.About the ratio of adhesive resin and electric charge generation material (CGM), with respect to adhesive resin 100 mass parts, preferred electric charge generation material (CGM) is 20 mass parts～600 mass parts.Through using these resins, can make with using residual electric potential increase together repeatedly and reduce to minimum.Preferred 0.01～2 μ m of the thickness of charge generating layer (CGL).
< charge transport layer (CTL) >
In charge transport layer (CTL), contain charge transport materials (CTM) and adhesive resin.As other materials, can add adjuvants such as antioxidant as required and form.
As charge transport materials (CTM), can use known charge transport materials (CTM).Can use for example triphenylamine derivative, hydrazone compound, compound of styryl, benzidine compound, adiene cpd etc.These charge transport materials are dissolved in usually and carry out layer formation in the suitable adhesive resin.
As the resin that in charge transport layer (CTL), uses, for example can enumerate polystyrene, acryl resin, methacrylic resin, vestolit, vinyl acetate resin, polyvinyl butyral resin, epoxy resin, urethane resin, phenolics, vibrin, alkyd resin, polycarbonate resin, organic siliconresin, melamine resin and contain the copolymer resin more than 2 in the repetitive of these resins.In addition, except these insulative resin, can also enumerate macromolecule organic semiconductors such as poly-N-vinyl carbazole.
As the bonding agent of these charge transport layers (CTL), most preferably polycarbonate resin.Polycarbonate resin the dispersiveness that makes charge transport materials (CTM), electrofax characteristic good aspect most preferably.About the ratio of adhesive resin and charge transport materials (CTM), with respect to adhesive resin 100 mass parts, preferred charge transport materials (CTM) 10 mass parts～200 mass parts.
[antioxidant]
If in the layer of photoreceptor constitutes, use antioxidant, can reduce by NO
XTherefore the influence that the attack of isoreactivity gas produces can control the generation that the hot and humid environment hypograph flows.
The antioxidant that uses among so-called the present invention, its typical example be in photoreceptor and even the autoxidation property material of photosensitive surface existence, the material with character of the effect that under conditions such as light, heat, discharge, prevents and even suppress oxygen.Specifically can enumerate following compound group.
(1) the chain inhibitor of free radical
Can enumerate phenol is that antioxidant, hindered phenol are that antioxidant, amine are that antioxidant, hindered amine are that antioxidant, diallyl diamines are that antioxidant, diallylamine are that antioxidant, quinhydrones are antioxidant etc.
(2) peroxide decomposer
Can enumerate sulphur and be antioxidant, thioether class, phosphoric acid is antioxidant, phosphorous acid esters etc.
Have again; So-called hindered phenol is antioxidant (antioxidant with hindered phenol structure); It is the compound that has bulky organic group at the ortho position of the alkoxide base of phenol property OH and even phenol property OH; So-called hindered amine is antioxidant (antioxidant with the structure of hindered amine), is near the compound that the N atom, has bulky organic group.As bulky organic group, the branch-like alkyl is arranged, the preference such as the tert-butyl group.
In above-mentioned antioxidant; With the chain inhibitor of the free radical of (1) for well; Wherein, has the antioxidant of hindered phenol structure, the structure of hindered amine, owing to prevent from the generation free radical activity kind of polymerization initiator and the reaction of oxygen; Therefore can make generation free radical activity kind help reaction effectively, therefore preferred.
In addition, can for example also can be the antioxidant and the usefulness of the thioether class of antioxidant and (2) with the hindered phenol of (1) with antioxidant more than 2 kinds and usefulness.
With regard to the antioxidant that uses in the present invention; As preferred antioxidant; The antioxidant that has above-mentioned the structure of hindered amine in the molecule; Help preventing image quality improvings such as image blurring, stain countermeasure, the antioxidant that contains hindered phenol structural unit and the structure of hindered amine unit as the molecule of another program is preferred too.
< protective seam >
Protective seam is that the coating fluid that in adhesive resin, adds inorganic particles at least and prepare is applied on the charge transport layer and forms.Have, protective seam preferably contains antioxidant, lubricant property material etc. again.
As inorganic particles, can preferably use the particulate of the tin oxide, zirconia etc. of the indium oxide of silicon dioxide, aluminium oxide, strontium titanates, zinc paste, titanium dioxide, tin oxide, antimony oxide, indium oxide, bismuth oxide, the tin that mixed, the antimony that mixed, tantalum.Preferred especially silicon dioxide, aluminium oxide, titanium dioxide, strontium titanates etc.
The number average primary particle size of inorganic particles is preferably 1～300nm, preferred especially 5～100nm.The number average primary particle size of inorganic particles is through the transmission electron microscope observation and is amplified to 10000 times; Randomly 300 particles are observed as primary particle, calculated the value that measured value obtains as the number average diameter of Fei Laite diameter (Off エ レ footpath) through image analysis.
As the adhesive resin that in protective seam, uses, can enumerate any resin of thermoplastic resin, thermoset resin.For example can enumerate polyvinyl butyral resin, epoxy resin, urethane resin, phenolics, vibrin, alkyd resin, polycarbonate resin, organic siliconresin, melamine resin etc.
As the lubricity material that in protective seam, uses, can enumerate resin micropowder (for example fluorine resin, polyolefin-based resins, organic siliconresin, melamine resin, Lauxite, acryl resin, styrene resin etc.), metal oxide micropowder (for example titanium dioxide, aluminium oxide, tin oxide etc.), kollag (for example teflon, polychlorotrifluoroethylene, Kynoar, zinc stearate, aluminium stearate etc.), silicone oil (for example dimethyl silicon oil, methyl phenyl silicone oil, methylhydrogenpolysi,oxane, cyclic dimethyl polysiloxane, alkyl modified silicon oil, polyether modified silicon oil, pure modified silicon oil, fluorine modified silicon oil, amino-modified silicone oil, sulfhydryl modified silicone oil, epoxide modified silicone oil, carboxy-modified silicone oil, higher fatty acid modified silicon oil etc.), fluorine resin powder (for example TFE powder, trifluorochlorethylene resin powder, hexafluoroethylene acrylic resin powder, fluoroethylene resin powder, pvdf resin powder, fluorine polyvinylidene chloride resin powder and their multipolymer etc.), polyolefin-based resins powder (for example such polyolefin-based resins powder of terpolymer of copolymer resin powders such as homopolymer resin powder, ethylene-propylene copolymer, ethylene-butene copolymer such as polyvinyl resin powder, acrylic resin powder, polybutene resin powder, polyhexene resin powder, they and hexene etc. and their heat modification thing etc.) etc.Because it is big that the friction factor of silicone oil alleviates effect, therefore preferred silicone oil.
The molecular weight of each resin that uses in the above-mentioned lubricant, the particle diameter of powder can suitably be selected.In addition, under the situation that is particle-like substance, about its particle diameter, preferred especially 0.1 μ m～10 μ m.For these lubricants are evenly disperseed, can in adhesive resin, add spreading agent.In addition, above-mentioned lubricity material, also can add in the charge transport layer during for surface at charge transport layer.
(making of photoreceptor)
The making of each layer that relates in the photoreceptor of the present invention (middle layer, photographic layer, charge generating layer, charge transport layer, protective seam); Can adopt dip coated, or the coating of circular amount control type, or dip coated and circular amount control type coating combination be provided with film and make, but be not limited to this.Have, for the coating of circle amount control type, for example write up is opened in the clear 58-189061 communique in the spy again.
Embodiment
Below enumerate embodiment and specify the present invention, but the present invention is not limited to these embodiment.Have again, hereinafter " part " expression " mass parts ".
(preparation of electric conductivity supporting mass)
Cut is carried out on surface to cylindrical shape aluminium supporting mass, prepares the electric conductivity supporting mass of 10 surfaceness RzJIS=1.5 (μ m), diameter 30mm, long 360mm.Have, 10 surfaceness Rz JIS represent the value according to JIS B 0601-2001 mensuration again.
(formation in middle layer)
With 2 times of the dispersion liquid of following composition dilutions, filter (filtrator: use Japanese Port one Le corporate system リ ジ メ Star シ ユ 5 μ m filtrators) after leaving standstill a night with identical mixed solvent, make the middle layer coating fluid.
1 part of polyamide CM8000 (eastern beautiful corporate system)
3 parts of titanium dioxide SMT500SAS (テ イ カ corporate system)
8 parts of methyl alcohol
2 parts in 1-butanols
Use sand mill as dispersion machine, carry out 10 hours dispersion with batch (-type).Use above-mentioned coating fluid, on above-mentioned supporting mass, adopting the dip coated method to be coated with and making dry film thickness is 2 μ m.
(formation of charge generating layer)
Following substances is mixed, use sand mill to disperse 10 hours, preparation charge generating layer coating fluid.Adopt the dip coated method that this coating fluid is applied on the above-mentioned middle layer, form the charge generating layer of dry film thickness 0.3 μ m.
Electric charge generation material: 20 parts of TiOPc pigment (in Cu-K α characteristic X-ray diffraction spectrum is measured, having the TiOPc pigment at maximum diffraction peak at least 27.3 ± 0.2 ° position)
Polyvinyl butyral resin (#6000-C: Denki Kagaku Kogyo kabushiki's system) 10 parts
700 parts of tert-butyl acetates
300 parts of 4-methoxyl-4-methyl-2 pentanones
(formation of charge transport layer)
Following substances is mixed, dissolve and preparation charge transport layer coating fluid.Adopt the dip coated method that this coating fluid is applied on the above-mentioned charge generating layer, form the charge transport layer of dry film thickness 25 μ m.
25 parts of charge transport materials (4,4 '-dimethyl-4 "-(beta-phenyl styryl) triphenylamine)
Bonding agent: polycarbonate (Z300: gas chemical company of Mitsubishi system) 300 parts
Antioxidant (Irganox1010: this チ バ ガ イ ギ one corporate system) 6 parts
1600 parts of THF
400 parts of toluene
Silicone oil (KF-50: chemical company of SHIN-ETSU HANTOTAI system) 0.001 part
(formation of protective seam)
Following substances is mixed, carry out 1 hour dispersion treatment with the US homogenizer.Then; 1.5 parts of the free-radical polymerised compounds and the polymerization initiator " Irgacure184 (vapour crust Japan (strain) system) " that are made up of acrylic acid series compd A with following structural formula and B (mass ratio 1/1) are dissolved in the above-mentioned dispersion liquid for 0.07 part, prepare protective layer used coating fluid.
Titanium particles (SMT100SAS: テ イ カ corporate system) 0.6 part
5 parts of 2-propyl alcohol
Silicone oil (X-22-160AS: chemical company of SHIN-ETSU HANTOTAI system) 0.002 part
The acrylic acid series compd A
The acrylic acid series compd B
Adopt the dip coated method on charge transport layer whole, to be coated with above-mentioned protective layer coating solution so that the thickness behind the curing reaction is 2.0 μ m.After the coating; Use mercury vapor lamp irradiation unit " ECS-401GX (ア イ グ ラ Off イ Star Network ス corporate system) "; Carry out the ultraviolet ray irradiation with ultraviolet ray accumulative total illuminometer " UVPF-A1 (PD-365) (ア イ グ ラ Off イ Star Network ス corporate system) ", the accumulative total light quantity is equivalent to 25J/cm
2After ultraviolet treatment with irradiation, under 120 ℃, carry out 60 minutes heated dryings and handle, thereby form protective seam.According to above step, make Electrophtography photosensor with the protective seam that contains Titanium particles.
(grinding)
Use manufacturing installation shown in Figure 2, change as shown in table 1 is from the distance of the axial not grind section at the both ends of photographic layer, is shape shown in Figure 4 with the surface grinding of the protective seam of ready photoreceptor, as sample No.101～109.
The material of cleaning doctor: urethane rubber
The material of the containment member of cleaning doctor: モ Le ト プ レ one Application
The axial length of the photoreceptor of containment member: 20mm
(evaluation)
Ready each sample No.101～109 are carried on the system compounding machine bizhubC352 of the commercial scientific & technical corporation of the Konica Minolta transformation apparatus; Carry out down the image formation (below be called printing) of half tone image and pixel rate 5% line chart and the pixel rate 25% of 20,000 continuous images concentration 0.4 with the A4 paper size at ambient temperature and moisture environment (20 ℃, 50%RH); Image quality when adopting following method that printing and making is begun the image quality at initial stage, long-time printing and making and the foreign matter of removing are estimated from the leakage at scraper two ends, will be shown in table 1 according to the result that the opinion rating shown in following is estimated.
Have, the position relation of each member of this moment is described below and sets again.
The photoreceptor axial length of charged member: 320mm
The photoreceptor axial length of developing member: 312mm
The photoreceptor axial length of cleaning element: 340mm
The image forming area minister degree of photoreceptor: 312mm
More than each length all be to be benchmark with the axial center of photoreceptor, the width when uniformly-spaced cutting apart at two ends.
< printing and making begins the evaluation method of the image quality at initial stage >
For from printing 100 printing of beginning, adopt the visual picture appraisal of carrying out.
(printing and making begins the opinion rating of the image quality at initial stage)
Zero: the rotation of no photoreceptor is inhomogeneous etc., obtains preferable image
△: follow a spot of rotation of photoreceptor inhomogeneous, obtain the slightly poor image of clarity
*: obtain and the low image of the inhomogeneous sharpness that accompanies of the rotation of photoreceptor
< evaluation method of the image quality in the long-time printing and making >
Extract 100 from having printed 20,000 the 19900th, the situation occurred of the image deflects of the informal voucher shape that accompanies through visual valuation and film forming.
(opinion rating of the image quality in the long-time printing and making)
Zero: the generation of the image deflects of informal voucher shape is less than 5
△: the image deflects of informal voucher shape occur as more than 5 and less than 8
*: the occuring as more than 8 of the image deflects of informal voucher shape
< evaluation method that the foreign matter of removing leaks from the scraper two ends >
After having printed 20,000, the image forming part of visualization bizhubC352 transformation apparatus is estimated the toner of periphery and the state of dispersing of foreign matter.
(opinion rating that the foreign matter of removing leaks from the scraper two ends)
Zero: do not find dispersing of toner and foreign matter
△: find dispersing of toner and foreign matter on a small quantity
*: compare with toner and dispersing of foreign matter, the dirt of image forming part is obvious
[table 1]
| Sample No. | The length of grind section (mm) not | Printing and making begins the image quality at initial stage | The image quality of long-time printing and making | Toner and foreign matter are from the leakage at scraper two ends | Remarks |
| 101 | 0.4 | ○ | ○ | △ | The present invention |
| 102 | 0.5 | ○ | ○ | ○ | The present invention |
| 103 | 1.0 | ○ | ○ | ○ | The present invention |
| 104 | 5.0 | ○ | ○ | ○ | The present invention |
| 105 | 10.0 | ○ | ○ | ○ | The present invention |
| 106 | 15.0 | ○ | ○ | ○ | The present invention |
| 107 | 20.0 | ○ | ○ | ○ | The present invention |
| 108 | 22.0 | ○ | ○ | △ | The present invention |
| 109 | 0.0 | △ | × | × | Relatively |
Have grind section and have not sample No.101～108 of grind section in the end of the photoreceptor of non-image formation portion at image forming area, the image quality of image quality and long-time printing and making that the printing and making of confirming all samples begins the initial stage is stable.In addition, even long-time printing and making, about the leakage from the scraper two ends of the toner removed and foreign matter, it is no problem and stable also to confirm.
Protective seam to photoreceptor has carried out the sample No.109 that grinds comprehensively, and is just poor from printing the image quality of printing at once after the beginning, and in long-time the printing, toner of having removed and foreign matter leak the dirt that is produced from the scraper two ends obvious.Confirmed validity of the present invention.
Except that kind as shown in table 2 is added the particulate that has changed the number average primary particle size in protective seam; Adopt with embodiment 1 same method and make photoreceptor; Grind to form the shape as shown in Figure 4 that has from the both ends of the photographic layer of photoreceptor axially for the not grind section of 5mm, as sample No.201～208.
Estimate
Sample N0.201～208 that make are carried on the system compounding machine bizhubC352 of the commercial scientific & technical corporation of the Konica Minolta transformation apparatus; Carry out down the image formation (below be called printing) of half tone image and pixel rate 5% line chart and the pixel rate 25% of 20,000 continuous images concentration 0.4 with the A4 paper size at ambient temperature and moisture environment (20 ℃, 50%RH); Adopt the method identical, identical opinion rating with embodiment 1; Image quality when printing and making is begun the image quality at initial stage, long-time printing and making and the foreign matter of having removed are estimated from the leakage at scraper two ends, and the result is shown in table 2.
[table 2]
| Sample No. | The kind of particulate | The equal particle diameter of particle number (nm) | Printing and making begins the image quality at initial stage | The image quality of long-time printing and making | Toner and foreign matter are from the leakage at scraper two | Remarks | |
| 201 | Silicon dioxide | 25 | ○ | ○ | ○ | The |
|
| 202 | Aluminium oxide | 35 | ○ | ○ | ○ | The |
|
| 203 | Titanium dioxide | 70 | ○ | ○ | ○ | The |
|
| 204 | Strontium titanates | 100 | ○ | △ | △ | The present invention | |
| 205 | Silicon dioxide | 5 | ○ | △ | ○ | The present invention | |
| 206 | Silicon dioxide | 50 | ○ | ○ | ○ | The present invention | |
| 207 | Silicon dioxide | 80 | ○ | ○ | ○ | The present invention | |
| 208 | Silicon dioxide | 120 | △ | ○ | △ | The present invention |
About protective seam have various types of and particle diameter particulate, have grind section and have not sample No.201～208 of grind section at image forming area in the end of the photoreceptor of non-image formation portion, the image quality that the printing and making of confirming all samples begins initial stage and long-time printing and making is stable.In addition, even long-time printing and making, about the leakage from the scraper two ends of the toner removed and foreign matter, it is no problem and stable also to confirm.
Except not being coated with the protective seam, adopt with embodiment 1 identical method and make photoreceptor, the distance of change as shown in table 3 axial not grind section from the both ends of photographic layer is made the photoreceptor that grinds to form shape shown in Figure 4, as sample No.301～309.In addition, be not coated with protective seam, in charge transport layer, do not add silicone oil (KF-50: chemical company of SHIN-ETSU HANTOTAI system); The distance that makes the not grind section axial from the both ends of photographic layer is 10.0mm; In addition, adopt identical method to make photoreceptor, as sample No.310.
Estimate
Sample No.301～310 that make are carried on the system compounding machine bizhubC352 of the commercial scientific & technical corporation of the Konica Minolta transformation apparatus; Carry out down the image formation (below be called printing) of half tone image and pixel rate 5% line chart and the pixel rate 25% of 20,000 continuous images concentration 0.4 with the A4 paper size at ambient temperature and moisture environment (20 ℃, 50%RH); Adopt the method identical, identical opinion rating with embodiment 1; Image quality when printing and making is begun the image quality at initial stage, long-time printing and making and the foreign matter of removing are estimated from the leakage at scraper two ends, and the result is shown in table 3.
[table 3]
| Sample No. | The length of grind section (mm) not | Printing and making begins the image quality at initial stage | The image quality of long-time printing and making | Toner and foreign matter are from the leakage at scraper two ends | Remarks |
| 301 | 0.4 | ○ | ○ | △ | The present invention |
| 302 | 0.5 | ○ | ○ | ○ | The present invention |
| 303 | 1.0 | ○ | ○ | ○ | The present invention |
| 304 | 5.0 | ○ | ○ | ○ | The present invention |
| 305 | 10.0 | ○ | ○ | ○ | The present invention |
| 306 | 15.0 | ○ | ○ | ○ | The present invention |
| 307 | 20.0 | ○ | ○ | ○ | The present invention |
| 308 | 22.0 | ○ | ○ | △ | The present invention |
| 309 | 0.0 | × | × | × | Relatively |
| 310 | 10.0 | △ | △ | △ | The present invention |
About having grind section at image forming area and having not sample No.301～308 of grind section in the end of the photoreceptor of non-image formation portion, it is all stable to confirm that printing and making begins the image quality of the image quality at initial stage, long-time printing and making.In addition, about the leakage from the scraper two ends of the foreign matter removed behind the long-time printing and making, it is no problem and stable also to confirm.
Charge transport layer to photoreceptor has carried out the sample No.309 that grinds comprehensively, and it is poor that printing and making begins the image quality at initial stage, and the foreign matter of having removed behind the long-time printing and making is obvious from the dirt that leakage produced at scraper two ends.The sample No.310 that does not use silicone oil in the charge transport layer and make confirms that printing and making begins the image quality at initial stage, the image quality of printing and making is slightly poor for a long time, and the foreign matter of having removed behind the long-time printing and making is also slightly poor from the leakage at scraper two ends.
Claims (10)
1. Electrophtography photosensor, this Electrophtography photosensor has photographic layer at least on conductive base,
The surperficial outermost layer of said photoreceptor has grind section in its surperficial image forming area portion, and the regional portion of non-image formation at two ends has not grind section, and
The axial length of said not grind section is 0.5mm～20mm from the end of photoreceptor.
2. Electrophtography photosensor according to claim 1 is characterized in that,
The amount of grinding of said grind section is 0.01 μ m～0.3 μ m at the surperficial outermost thickness direction of said photoreceptor.
3. Electrophtography photosensor according to claim 1 is characterized in that,
The average length of the surfaceness curve element of the abrasive surface of the grind section of this photoreceptor is that RSm is 1.2 μ m～16.0 μ m on the direction vertical with the photoreceptor driving direction, and the degree of bias of the surfaceness curve of the abrasive surface of the grind section of this photoreceptor on the direction vertical with the photoreceptor driving direction is that Rsk is-3.0～0.0.
4. Electrophtography photosensor according to claim 1 is characterized in that,
Said photographic layer is made up of the charge transport layer of charge generating layer and setting above that, and the surperficial outermost layer of said Electrophtography photosensor is a charge transport layer.
5. Electrophtography photosensor according to claim 1 is characterized in that,
The surperficial outermost layer of said Electrophtography photosensor is a protective seam.
6. Electrophtography photosensor according to claim 5 is characterized in that,
Said protective seam contains inorganic particles.
7. Electrophtography photosensor according to claim 6 is characterized in that,
Said inorganic particles is at least a kind of inorganic particles from silicon dioxide, aluminium oxide, titanium dioxide and strontium titanates, selecting.
8. Electrophtography photosensor according to claim 1 is characterized in that,
The surperficial outermost layer of said Electrophtography photosensor contains silicone oil.
9. Electrophtography photosensor according to claim 1 is characterized in that,
Said Electrophtography photosensor sets gradually middle layer, charge generating layer, charge transport layer and protective seam and forms on the electric conductivity supporting mass.
10. Electrophtography photosensor according to claim 9 is characterized in that,
Said electric conductivity supporting mass is banded or cylindric electric conductivity supporting mass.
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| JP2008-207727 | 2008-08-12 | ||
| JP2008207727A JP5343443B2 (en) | 2008-08-12 | 2008-08-12 | Electrophotographic photoreceptor |
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| CN101650536B true CN101650536B (en) | 2012-08-22 |
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| JP2013029812A (en) * | 2011-06-23 | 2013-02-07 | Canon Inc | Electrophotographic photoreceptor, intermediate transfer member, process cartridge, and electrophotographing apparatus |
| JP6065872B2 (en) * | 2013-06-21 | 2017-01-25 | コニカミノルタ株式会社 | Electrophotographic photosensitive member, electrophotographic image forming apparatus and process cartridge |
| KR101804383B1 (en) | 2014-01-14 | 2017-12-04 | 한화테크윈 주식회사 | System and method for browsing summary image |
| JP7075288B2 (en) * | 2018-06-05 | 2022-05-25 | キヤノン株式会社 | Electrophotographic photosensitive members, process cartridges and electrophotographic equipment |
| JP7205115B2 (en) * | 2018-08-31 | 2023-01-17 | 富士電機株式会社 | Electrophotographic photoreceptor and process cartridge using the same |
| JP7036065B2 (en) * | 2019-03-07 | 2022-03-15 | コニカミノルタ株式会社 | Image formation method |
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| JP2007187814A (en) * | 2006-01-12 | 2007-07-26 | Canon Inc | Image forming apparatus |
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| JPS5778068U (en) * | 1980-10-30 | 1982-05-14 | ||
| JPH03249781A (en) * | 1990-02-28 | 1991-11-07 | Canon Inc | Developer leakage preventing device and process cartridge provided therewith |
| JP2877570B2 (en) * | 1991-08-01 | 1999-03-31 | キヤノン株式会社 | Electrophotographic photoreceptor |
| JP3129614B2 (en) * | 1994-11-09 | 2001-01-31 | キヤノン株式会社 | Image forming device |
| JPH1165150A (en) * | 1997-03-18 | 1999-03-05 | Konica Corp | Photoreceptor, its production and image forming device |
| JP2006267856A (en) * | 2005-03-25 | 2006-10-05 | Canon Inc | Electrophotographic photoreceptor, its manufacturing method, and electrophotographic system using the electrophotographic photoreceptor |
| JP2008076656A (en) * | 2006-09-20 | 2008-04-03 | Fuji Xerox Co Ltd | Electrophotographic photoreceptor, process cartridge and image forming apparatus |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003307859A (en) * | 2002-04-17 | 2003-10-31 | Canon Inc | Electrophotographic photoreceptor, its manufacturing method and electrophotographic device |
| CN1490683A (en) * | 2002-09-24 | 2004-04-21 | 株式会社理光 | Cleaner, topping case, imager and toner |
| CN1950756A (en) * | 2004-03-26 | 2007-04-18 | 佳能株式会社 | Electrophotographic photoreceptor, method of manufacturing electrophotographic photoreceptor, process cartridge, and electrophotographic device |
| JP2007187814A (en) * | 2006-01-12 | 2007-07-26 | Canon Inc | Image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2010044186A (en) | 2010-02-25 |
| JP5343443B2 (en) | 2013-11-13 |
| CN101650536A (en) | 2010-02-17 |
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