JP2002311621A - Substrate for photosensitive drum and photosensitive drum - Google Patents
Substrate for photosensitive drum and photosensitive drumInfo
- Publication number
- JP2002311621A JP2002311621A JP2001113779A JP2001113779A JP2002311621A JP 2002311621 A JP2002311621 A JP 2002311621A JP 2001113779 A JP2001113779 A JP 2001113779A JP 2001113779 A JP2001113779 A JP 2001113779A JP 2002311621 A JP2002311621 A JP 2002311621A
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- resin
- substrate
- roundness
- photosensitive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 32
- 229920005989 resin Polymers 0.000 claims abstract description 40
- 239000011347 resin Substances 0.000 claims abstract description 40
- 239000011256 inorganic filler Substances 0.000 claims abstract description 9
- 229910003475 inorganic filler Inorganic materials 0.000 claims abstract description 9
- 239000004953 Aliphatic polyamide Substances 0.000 claims abstract description 7
- 229920003231 aliphatic polyamide Polymers 0.000 claims abstract description 7
- 229920006122 polyamide resin Polymers 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 9
- 239000006258 conductive agent Substances 0.000 description 7
- 150000001875 compounds Chemical class 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 229920001778 nylon Polymers 0.000 description 6
- 239000004677 Nylon Substances 0.000 description 5
- 239000011342 resin composition Substances 0.000 description 5
- 229920002292 Nylon 6 Polymers 0.000 description 4
- 229920002302 Nylon 6,6 Polymers 0.000 description 4
- 239000006229 carbon black Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920003235 aromatic polyamide Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229920000571 Nylon 11 Polymers 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 229920003189 Nylon 4,6 Polymers 0.000 description 1
- 229920000305 Nylon 6,10 Polymers 0.000 description 1
- 229920000572 Nylon 6/12 Polymers 0.000 description 1
- 229920000007 Nylon MXD6 Polymers 0.000 description 1
- 229920006883 PAMXD6 Polymers 0.000 description 1
- 241000282320 Panthera leo Species 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920006121 Polyxylylene adipamide Polymers 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Photoreceptors In Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子写真装置や静
電記録装置に用いられる感光ドラム及び該感光ドラムに
好適な感光ドラム用基体に関する。[0001] 1. Field of the Invention [0002] The present invention relates to a photosensitive drum used in an electrophotographic apparatus or an electrostatic recording apparatus, and a photosensitive drum base suitable for the photosensitive drum.
【０００２】[0002]
【従来の技術】複写機、ファクシミリ、プリンター等に
おける静電記録プロセスにおいては、先ず、感光ドラム
の表面を一様に帯電させ、該感光ドラム表面に光学系か
ら映像を投射し光の当たった部分の帯電を消去すること
によって静電潜像を形成し、次いで、この静電潜像にト
ナーを供給してトナーの静電的付着によりトナー像を形
成し、これを紙、ＯＨＰ、印画紙等の記録媒体へ転写し
て画像を形成する方法が採られている。2. Description of the Related Art In an electrostatic recording process in a copying machine, a facsimile, a printer, or the like, first, the surface of a photosensitive drum is uniformly charged, and an image is projected from an optical system onto the surface of the photosensitive drum and light is applied to the portion. Forming an electrostatic latent image by erasing the charge of the toner, and then supplying toner to the electrostatic latent image to form a toner image by electrostatic adhesion of the toner, and forming the toner image on paper, OHP, photographic paper, etc. The image is transferred to a recording medium to form an image.
【０００３】このような静電記録プロセスに用いられる
感光ドラムにおいて、ドラム基体としては、従来、比較
的軽量で機械加工性にも優れ、かつ良好な導電性を有す
ることから、アルミニウム合金を円筒状・円柱状に加工
したドラム基体が用いられている。また近年、このアル
ミニウム合金製のドラム基体に代替するものとして、熱
可塑性樹脂等の樹脂や、該樹脂をベースとした複合材料
を加工したドラム基体等が用いられている。[0003] In a photosensitive drum used in such an electrostatic recording process, a drum base is conventionally made of an aluminum alloy in a cylindrical shape because of its relatively light weight, excellent machinability, and good conductivity. -A drum base processed into a cylindrical shape is used. In recent years, as an alternative to the aluminum alloy drum base, a resin such as a thermoplastic resin, a drum base processed from a composite material based on the resin, and the like have been used.
【０００４】ここで、前記静電記録プロセスにおいて
は、円筒状・円柱状のドラム基体が回転することにより
記録媒体に画像が形成されるため、前記ドラム基体に
は、優れた寸法精度等が要求されている。Here, in the electrostatic recording process, since an image is formed on a recording medium by rotating a cylindrical / columnar drum base, the drum base is required to have excellent dimensional accuracy and the like. Have been.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、前記従来に
おける諸要求に応え、以下の目的を達成することを課題
とする。即ち、本発明は、寸法精度に優れ、ムラが無く
画質に優れた画像を形成可能な感光ドラム及び該感光ド
ラムに好適な感光ドラム用基体を提供することを目的と
する。SUMMARY OF THE INVENTION An object of the present invention is to meet the above-mentioned various demands in the prior art and achieve the following objects. That is, an object of the present invention is to provide a photosensitive drum which is capable of forming an image having excellent dimensional accuracy and excellent image quality without unevenness, and a photosensitive drum base suitable for the photosensitive drum.
【０００６】[0006]
【課題を解決するための手段】前記課題を解決するため
の手段としては、以下の通りである。即ち、 ＜１＞ 樹脂を含有し、回転可能であって、真円度が５
０μｍ以下であることを特徴とする感光ドラム用基体で
ある。 ＜２＞ 真円度が２０μｍ以下である前記＜１＞に記載
の感光ドラム用基体である。 ＜３＞ 樹脂がポリアミド系樹脂を含有する前記＜１＞
又は＜２＞に記載の感光ドラム用基体である。Means for solving the above problems are as follows. That is, <1> contains a resin, is rotatable, and has a roundness of 5
A photosensitive drum base having a thickness of 0 μm or less. <2> The photosensitive drum substrate according to <1>, wherein the circularity is 20 μm or less. <3> The above <1>, wherein the resin contains a polyamide resin.
Or the photosensitive drum substrate according to <2>.
【０００７】＜４＞ 樹脂が、脂肪族ポリアミド系樹脂
を含有する前記＜１＞から＜３＞のいずれかに記載の感
光ドラム用基体である。 ＜５＞ 無機充填材を含有する前記＜１＞から＜４＞の
いずれかに記載の感光ドラム用基体である。 ＜６＞ 前記＜１＞から＜５＞のいずれかに記載の感光
ドラム用基体上に、少なくとも感光層を有することを特
徴とする感光ドラムである。<4> The photosensitive drum substrate according to any one of <1> to <3>, wherein the resin contains an aliphatic polyamide resin. <5> The photosensitive drum substrate according to any one of <1> to <4>, further including an inorganic filler. <6> A photosensitive drum having at least a photosensitive layer on the photosensitive drum substrate according to any one of <1> to <5>.
【０００８】[0008]
【発明の実施の形態】以下、本発明を詳細に説明する。
本発明の感光ドラム用基体は、樹脂を含有し、必要に応
じてその他の成分を含有する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
The photosensitive drum substrate of the present invention contains a resin and, if necessary, other components.
【０００９】前記感光ドラム用基体としては、回転可能
であって、真円度が５０μｍ以下であることが必要であ
り、２０μｍ以下であることが好ましい。前記真円度
が、５０μｍを超えると、寸法精度が悪く、画質に優れ
ムラのない画像を形成することができない。The photosensitive drum substrate must be rotatable and have a roundness of 50 μm or less, preferably 20 μm or less. When the roundness exceeds 50 μm, the dimensional accuracy is poor, the image quality is excellent, and an image without unevenness cannot be formed.
【００１０】前記感光ドラム用基体の真円度は、該感光
ドラム用基体の円筒体としての精度を決定するものであ
り、帯電ローラ等の各部材との位置的精度や感光ドラム
の表面電位の均一性、画像印刷性能に対し大きな影響を
与える。本発明においては、前記感光ドラム用基体に含
有させる樹脂の種類、量の調節、充填材の使用等によ
り、樹脂溶融時の樹脂の充填性、成形時の金型等の転写
性を向上させ、真円度を前記数値範囲内に制御すること
によって、寸法精度が良く、画質に優れ、ムラのない画
像を形成可能な感光ドラムが提供される。The roundness of the photosensitive drum substrate determines the accuracy of the photosensitive drum substrate as a cylinder, and the positional accuracy of each member such as a charging roller and the surface potential of the photosensitive drum. It has a significant effect on uniformity and image printing performance. In the present invention, the type of the resin to be contained in the photosensitive drum substrate, adjustment of the amount, the use of a filler, etc., to improve the filling properties of the resin at the time of melting the resin, the transferability of the mold at the time of molding, By controlling the roundness within the above numerical range, a photosensitive drum having good dimensional accuracy, excellent image quality, and capable of forming an image without unevenness is provided.
【００１１】尚、前記真円度は、以下のように測定・算
出した。ラウンドテスト（（株）ミツトヨ製）を用い、
感光ドラム用基体の円周の形状から、内接円及び外接円
を求め、その直径差を真円度とした。The roundness was measured and calculated as follows. Using a round test (manufactured by Mitutoyo Corporation),
The inscribed circle and the circumscribed circle were determined from the shape of the circumference of the photosensitive drum base, and the difference in diameter was defined as the roundness.
【００１２】前記感光ドラム用基体としては、軽量化、
駆動電力の低減化等の点で、樹脂を含有する必要があ
る。該樹脂としては、導電性樹脂組成物が好ましく、該
導電性樹脂組成物を構成する樹脂基材としては、特に制
限はないが、熱可塑性樹脂が好ましい。該熱可塑性樹脂
としては、従来から感光ドラム用の基体に用いられてい
る公知の樹脂材料が総て好適に挙げられるが、特に、感
光層を形成するに良好な表面平滑性を有し、かつ耐薬品
性及び機械的強度に優れる点で、各種ナイロン等のポリ
アミド系樹脂が好ましい。該ポリアミド系樹脂として
は、芳香族ポリアミド系樹脂、脂肪族ポリアミド系樹脂
が挙げられ、特に脂肪族ポリアミド系樹脂が好ましい。
該脂肪族ポリアミド系樹脂としては、例えば、ナイロン
１１、ナイロン１２、ナイロン４６、ナイロン６、ナイ
ロン６６、ナイロンＭＸＤ６、ナイロン６１０、ナイロ
ン６１２、ナイロン１２１２、及び、これらの共重合物
等が挙げられる。これらは、１種単独で使用してもよく
２種以上を併用してもよい。これらの中でも、より寸法
安定性及び成形性に優れる点で、脂肪族ポリアミド系樹
脂としては、ナイロン６及びナイロン６６等が好まし
く、芳香族ポリアミド系樹脂としては、ナイロンＭＸＤ
６等が好ましい。The photosensitive drum substrate may be lighter,
It is necessary to contain a resin in terms of reduction in driving power and the like. The resin is preferably a conductive resin composition, and the resin substrate constituting the conductive resin composition is not particularly limited, but is preferably a thermoplastic resin. As the thermoplastic resin, all known resin materials conventionally used for a substrate for a photosensitive drum are suitably mentioned, and in particular, the resin has good surface smoothness for forming a photosensitive layer, and Polyamide-based resins such as various nylons are preferable in terms of excellent chemical resistance and mechanical strength. Examples of the polyamide resin include an aromatic polyamide resin and an aliphatic polyamide resin, and an aliphatic polyamide resin is particularly preferable.
Examples of the aliphatic polyamide-based resin include nylon 11, nylon 12, nylon 46, nylon 6, nylon 66, nylon MXD6, nylon 610, nylon 612, nylon 1212, and copolymers thereof. These may be used alone or in combination of two or more. Among these, nylon 6 and nylon 66 are preferable as the aliphatic polyamide-based resin in view of more excellent dimensional stability and moldability, and nylon MXD is preferred as the aromatic polyamide-based resin.
6 and the like are preferable.
【００１３】前記感光ドラム用基体には、吸湿による寸
法変化等を抑制するため、非吸湿性の樹脂を、前記ポリ
アミド系樹脂等と併用するのが好ましい。該非吸湿性の
樹脂としては、例えば、ポリプロピレン、ポリフェニレ
ンエーテル、ポリフェニレンサルファイド等が挙げられ
る。これらの非吸湿性の樹脂は、前記ポリアミド系樹脂
との相溶性等を考慮して適宜選択するのが好ましい。It is preferable that a non-hygroscopic resin is used in combination with the polyamide resin or the like in the photosensitive drum substrate in order to suppress a dimensional change or the like due to moisture absorption. Examples of the non-hygroscopic resin include polypropylene, polyphenylene ether, polyphenylene sulfide, and the like. It is preferable that these non-hygroscopic resins are appropriately selected in consideration of the compatibility with the polyamide resin and the like.
【００１４】前記導電性樹脂組成物は、一般に、前記樹
脂基材に、導電剤を添加して導電性を付与したものであ
る。該導電剤としては、前記樹脂基材に均一に好適に分
散可能であれば特に制限はなく、例えば、カーボンブラ
ック、グラファイト、アルミニウム、銅、ニッケル等の
金属粉、導電性ガラス粉等が挙げられ、特にカーボンブ
ラックが好ましい。前記導電剤の前記導電性樹脂組成物
における含有量としては、特に制限はないが、５〜３０
重量％が好ましく、５〜２０重量％がより好ましい。ま
た、該導電剤を含有させることにより、基体の表面抵抗
値を、１０4Ω／□（オーム／スクエア）以下とするの
が好ましく、１０2Ω／□以下とするのがより好まし
い。In general, the conductive resin composition is obtained by adding a conductive agent to the resin base material to impart conductivity. The conductive agent is not particularly limited as long as it can be uniformly and suitably dispersed in the resin substrate, and examples thereof include carbon black, graphite, aluminum, copper, metal powder such as nickel, and conductive glass powder. Particularly, carbon black is preferable. The content of the conductive agent in the conductive resin composition is not particularly limited;
% By weight, more preferably 5 to 20% by weight. Further, by including the conductive agent, the surface resistance of the substrate is preferably set to 10 4 Ω / □ (ohm / square) or less, more preferably 10 2 Ω / □ or less.
【００１５】前記感光ドラム用基体には、補強・増量の
目的で、所望により、各種繊維等の無機充填材を含有さ
せることができる。該無機充填材としては、例えば、カ
ーボン繊維、導電性ウィスカ、導電性ガラス繊維等の導
電性繊維やウィスカ、ガラス繊維等の非導電性繊維等が
挙げられる。該導電性繊維は、導電剤としても作用し得
るため、該導電性繊維を用いることにより、前記カーボ
ンブラック等の導電剤の使用量を減らすことができる。The base for the photosensitive drum may contain an inorganic filler such as various fibers, if desired, for the purpose of reinforcing and increasing the amount. Examples of the inorganic filler include conductive fibers such as carbon fibers, conductive whiskers, and conductive glass fibers, and non-conductive fibers such as whiskers and glass fibers. Since the conductive fiber can also act as a conductive agent, the amount of the conductive agent such as the carbon black can be reduced by using the conductive fiber.
【００１６】前記無機充填材の配合量としては、特に制
限はなく、無機充填材の種類、繊維の長さ及び径等に応
じて適宜選択されるが、通常は、前記導電性樹脂組成物
の１〜３０重量％が好ましく、５〜２５重量％がより好
ましく、１０〜２５重量％が更に好ましい。The amount of the inorganic filler is not particularly limited, and is appropriately selected depending on the kind of the inorganic filler, the length and the diameter of the fiber, and the like. 1 to 30% by weight is preferable, 5 to 25% by weight is more preferable, and 10 to 25% by weight is further preferable.
【００１７】尚、前記導電性樹脂組成物には、所望によ
り、前記無機充填材のほか、ポリテトラフルオロエチレ
ン（ＰＴＦＥ）、シリコーン、二硫化モリブデン（Ｍｏ
Ｓ2）、各種金属石鹸等の公知の添加剤を適量添加する
ことができる。また、通常用いられるシランカップリン
グ剤やチタネートカップリング剤等を用い、前記導電
剤、無機充填材等に表面処理を施してもよい。The conductive resin composition may include, if desired, polytetrafluoroethylene (PTFE), silicone, molybdenum disulfide (Mo), in addition to the inorganic filler.
S 2 ), known additives such as various metal soaps can be added in appropriate amounts. The conductive agent, the inorganic filler, and the like may be subjected to a surface treatment using a silane coupling agent, a titanate coupling agent, or the like that is generally used.
【００１８】前記感光ドラム用基体の形状としては、回
転により、容易に記録媒体に画像を形成し得る点で、円
筒状・円柱状等が好ましい。該感光ドラム用基体の成形
方法としては、特に制限はなく、例えば、射出成形法、
押出成形法等が挙げられるが、射出成形法が特に好まし
い。成形温度や射出圧力等の成形条件は、基体を構成す
る樹脂成分の種類等に応じて適宜選択される。The shape of the photosensitive drum substrate is preferably a cylindrical shape, a cylindrical shape, or the like, since an image can be easily formed on a recording medium by rotation. The method for molding the photosensitive drum substrate is not particularly limited, and examples thereof include an injection molding method,
Although an extrusion molding method is mentioned, an injection molding method is particularly preferable. Molding conditions such as molding temperature and injection pressure are appropriately selected according to the type of the resin component constituting the base.
【００１９】［感光ドラム］本発明の感光ドラムは、前
記本発明の感光ドラム用基体上に、感光層を有し、必要
に応じてその他の層を有する。[Photosensitive Drum] The photosensitive drum of the present invention has a photosensitive layer on the substrate for a photosensitive drum of the present invention, and has other layers as necessary.
【００２０】−感光層− 前記感光層としては、電荷発生層及び電荷輸送層を少な
くとも有するのが好ましい。-Photosensitive Layer- The photosensitive layer preferably has at least a charge generation layer and a charge transport layer.
【００２１】−−電荷発生層−− 前記電荷発生層は、電荷発生化合物及び結着樹脂を含む
のが好ましい。--Charge Generating Layer-- The charge generating layer preferably contains a charge generating compound and a binder resin.
【００２２】前記電荷発生化合物としては、特に制限は
なく、従来、感光体の電荷発生層に用いられる公知の化
合物の中から適宜選択され、各種無機系導電性化合物、
有機系導電性化合物等が挙げられる。これらの中でも、
電荷発生能の高い化合物等が好ましい。前記結着樹脂と
しては、特に制限はなく、従来、感光体の電荷発生層等
に用いられる公知の樹脂の中から適宜選択される。前記
電荷発生層は、公知の塗布、蒸着等の方法によって形成
することができる。The charge generating compound is not particularly limited, and may be appropriately selected from known compounds used in the charge generating layer of a photoreceptor.
Organic conductive compounds and the like can be mentioned. Among these,
Compounds and the like having high charge generating ability are preferred. The binder resin is not particularly limited, and is appropriately selected from known resins conventionally used for a charge generation layer of a photoconductor. The charge generation layer can be formed by a known method such as coating and vapor deposition.
【００２３】−−電荷輸送層−− 前記電荷輸送層は、不均一電荷輸送層及び均一電荷輸送
層を有するのが好ましい。--Charge Transport Layer-- The charge transport layer preferably has a non-uniform charge transport layer and a uniform charge transport layer.
【００２４】前記不均一電荷輸送層としては、特に制限
はないが、粒子分散型不均一電荷輸送層や、相分離型不
均一電荷輸送層等が好ましい。該不均一電荷輸送層は、
高分子材料等の、前記不均一電荷輸送層に含有させる材
料を、溶剤に分散させ、公知の塗布等の方法によって形
成することができる。The heterogeneous charge transport layer is not particularly limited, but is preferably a particle-dispersion type heterogeneous charge transport layer, a phase separation type heterogeneous charge transport layer, or the like. The heterogeneous charge transport layer,
The material to be contained in the heterogeneous charge transport layer, such as a polymer material, can be dispersed in a solvent and formed by a known method such as coating.
【００２５】前記均一電荷輸送層としては、特に制限は
ないが、電荷輸送能が高く、成膜性に優れる高分子化合
物を含有するのが好ましい。該均一電荷輸送層は、前記
高分子材料等の、前記均一電荷輸送層に含有させる材料
を、溶剤に分散させ、公知の塗布等の方法によって形成
することができる。The uniform charge transport layer is not particularly limited, but preferably contains a polymer compound having high charge transport ability and excellent film formability. The uniform charge transport layer can be formed by dispersing a material to be contained in the uniform charge transport layer, such as the polymer material, in a solvent, and by a known method such as coating.
【００２６】−その他の層−前記その他の層としては、
下引き層、保護層等が挙げられる。-Other layers-As the other layers,
Examples include an undercoat layer and a protective layer.
【００２７】[0027]
【実施例】以下、実施例、比較例を示し、本発明をより
具体的に説明するが、本発明は下記実施例に何ら制限さ
れるものではない。The present invention will be described in more detail with reference to the following examples and comparative examples. However, the present invention is not limited to the following examples.
【００２８】（実施例１〜３及び比較例１〜３）表１に
示す成分配合比の感光ドラム用基体を作製した（円筒
状、寸法：２４ｍｍ（φ）×２６０ｍｍ）後、下記評価
方法により、該感光ドラム用基体の真円度を測定・評価
した。結果を表１に示す。(Examples 1 to 3 and Comparative Examples 1 to 3) Substrates for photosensitive drums having the composition ratios shown in Table 1 were prepared (cylindrical, dimensions: 24 mm (φ) × 260 mm), and then evaluated by the following evaluation methods. The roundness of the photosensitive drum substrate was measured and evaluated. Table 1 shows the results.
【００２９】＜真円度の評価方法＞ラウンドテスト
（（株）ミツトヨ製）を用い、感光ドラム用基体の円周
の形状から、内接円及び外接円を求め、その直径差を真
円度とした。<Evaluation Method of Roundness> Using a round test (manufactured by Mitutoyo Corporation), an inscribed circle and a circumscribed circle are obtained from the shape of the circumference of the photosensitive drum base, and the difference in diameter is determined by the roundness. And
【００３０】その後、前記感光ドラム用基体に、厚み３
０μｍの感光層を形成して感光ドラムを作製し、下記評
価方法により画像特性の評価を行なった。 ＜画像特性（印字性能）の評価方法＞前記感光ドラムを
レーザーショットプリンタに装着し、画像を形成して目
視により画質を評価した。結果を表１に示す。Thereafter, a thickness of 3 mm is applied to the photosensitive drum substrate.
A photosensitive layer having a thickness of 0 μm was formed to produce a photosensitive drum, and image characteristics were evaluated by the following evaluation methods. <Method of evaluating image characteristics (printing performance)> The photosensitive drum was mounted on a laser shot printer, an image was formed, and the image quality was visually evaluated. Table 1 shows the results.
【００３１】[0031]
【表１】 [Table 1]
【００３２】尚、表１において、「ＰＡ６６」は、ナイ
ロン６６（宇部興産（株）製「ＵＢＥナイロン」）、
「ＰＡ６」は、ナイロン６（宇部興産（株）製「ＵＢＥ
ナイロン」）、「ＰＡＭＸＤ６」は、ポリアミドＭＸＤ
６（東洋紡(株)製「東洋紡ナイロンＴ６００」）、「Ｃ
／Ｂ」は、カーボンブラック（ライオン（株）製「ケッ
チェンブラック」）、「ウィスカ」はチタン酸カリウム
ウィスカ（大塚化学（株）製「ティスモ」）である。In Table 1, "PA66" is nylon 66 ("UBE nylon" manufactured by Ube Industries, Ltd.),
"PA6" is made of nylon 6 ("UBE" manufactured by Ube Industries, Ltd.)
Nylon ") and" PAMXD6 "are polyamide MXD
6 (“Toyobo Nylon T600” manufactured by Toyobo Co., Ltd.), “C
/ B "is carbon black (" Ketjen Black "manufactured by Lion Corporation), and" Whisker "is potassium titanate whisker (" Tismo "manufactured by Otsuka Chemical Co., Ltd.).
【００３３】実施例・比較例より、実施例１〜３では、
真円度の値が小さく、画像特性が良好であることがわか
る。From Examples and Comparative Examples, in Examples 1 to 3,
It can be seen that the value of the roundness is small and the image characteristics are good.
【００３４】[0034]
【発明の効果】本発明によれば、寸法精度に優れ、ムラ
が無く画質に優れた画像を形成可能な感光ドラム及び該
感光ドラムに好適な感光ドラム用基体を提供することが
できる。According to the present invention, it is possible to provide a photosensitive drum capable of forming an image having excellent dimensional accuracy and excellent image quality without unevenness, and a photosensitive drum base suitable for the photosensitive drum.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2H068 AA52 AA54 AA58 BB28 ──────────────────────────────────────────────────続 き The continuation of the front page F term (reference) 2H068 AA52 AA54 AA58 BB28
Claims (6)
度が５０μｍ以下であることを特徴とする感光ドラム用
基体。1. A photosensitive drum substrate comprising a resin, rotatable and having a roundness of 50 μm or less.
記載の感光ドラム用基体。2. The photosensitive drum substrate according to claim 1, wherein the circularity is 20 μm or less.
項１又は２に記載の感光ドラム用基体。3. The photosensitive drum substrate according to claim 1, wherein the resin contains a polyamide resin.
する請求項１から３のいずれかに記載の感光ドラム用基
体。4. The substrate for a photosensitive drum according to claim 1, wherein the resin contains an aliphatic polyamide-based resin.
いずれかに記載の感光ドラム用基体。5. The substrate for a photosensitive drum according to claim 1, further comprising an inorganic filler.
ドラム用基体上に、少なくとも感光層を有することを特
徴とする感光ドラム。6. A photosensitive drum having at least a photosensitive layer on the photosensitive drum substrate according to claim 1. Description:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001113779A JP2002311621A (en) | 2001-04-12 | 2001-04-12 | Substrate for photosensitive drum and photosensitive drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001113779A JP2002311621A (en) | 2001-04-12 | 2001-04-12 | Substrate for photosensitive drum and photosensitive drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002311621A true JP2002311621A (en) | 2002-10-23 |
Family
ID=18964958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001113779A Pending JP2002311621A (en) | 2001-04-12 | 2001-04-12 | Substrate for photosensitive drum and photosensitive drum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002311621A (en) |
-
2001
- 2001-04-12 JP JP2001113779A patent/JP2002311621A/en active Pending
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