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公开(公告)号：JP2005300861A
公开(公告)日：2005-10-27
申请号：JP2004116001
申请日：2004-04-09
Applicant: Sharp Corp , シャープ株式会社
Inventor： FUJITA SAYAKA , FUKUSHIMA KOUTARO , KADOI MIKIO , TORIYAMA KOICHI , ARIMURA TAKUYA
Abstract: PROBLEM TO BE SOLVED: To prevent the occurrence of a flaw and density unevenness in a formed image for a long period by regulating the surface properties of an electrophotographic photoreceptor of an image forming apparatus using an electrostatic charging process of a contactless type.
SOLUTION: In the electrophotographic photoreceptor 1 disposed in the image forming apparatus using the electrostatic charging process of the contactless type, the creep value (C
IT ) when the surface is loaded with an indentation maximum load 30 mN under the environment of a temperature 25°C and relative humidity 50% is specified to ≥2.70% and the Vickers hardness (HV)of the surface is specified to 20,000 to 25,000. Such electrophotographic photoreceptor 1 is highly flexible, is not excessively soft and has the plasticity not to exhibit brittleness and is therefore excellent in printing durability and cleanability and does not give rise to the flaw and density unevenness in the formed image.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：通过使用非接触式静电充电方法调节图像形成装置的电子照相感光体的表面性能，防止长时间形成的图像中的缺陷和密度不均匀的发生。 解决方案：在使用非接触式静电充电工艺的图像形成装置中设置的电子照相感光体1中，当表面装载有压痕最大载荷时的蠕变值（℃SB> 在25℃，相对湿度50％的环境下，将30mN规定为≥2.70％，将表面的维氏硬度（HV）规定为20,000〜25,000。 这种电子照相感光体1是高柔性的，不过分柔软并且具有不显示脆性的可塑性，因此印刷耐久性和清洁性优异，并且不会导致形成图像中的缺陷和浓度不均匀。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2004205542A
公开(公告)日：2004-07-22
申请号：JP2002370961
申请日：2002-12-20
Applicant: Sharp Corp , シャープ株式会社
Inventor： FUKUSHIMA KOUTARO , KADOI MIKIO , TORIYAMA KOICHI , UCHIUMI HISAYUKI
CPC classification number: G03G15/751
Abstract: PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor which makes formed images free of scuffing and lowering of density even in long-term use by controlling surface free energy. SOLUTION: The electrophotographic photoreceptor 1 which comprises a conductive support 3 and a photosensitive layer 7 disposed on the support 3 and on which an electrostatic latent image is formed by exposing the photosensitive layer 7 charged uniformly with light according to image information has a surface free energy (γ) set between 20 and 35 mN/m. By this setting, excess sticking of a toner to a surface of the photoreceptor 1 is suppressed, adhesion of foreign substances such as paper powder is suppressed, and release from the surface is facilitated; therefore cleanability of the photoreceptor 1 is improved. Since image formation is carried out using the photoreceptor 1 always having a clean surface, images are stable and free of scuffing and lowering of density over a prolonged period of time. COPYRIGHT: (C)2004,JPO&NCIPI
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公开(公告)号：JP2003066629A
公开(公告)日：2003-03-05
申请号：JP2001257594
申请日：2001-08-28
Applicant: Sharp Corp , シャープ株式会社
Inventor： SUGIMURA HIROSHI , KADOI MIKIO , TANAKA YUJI , HASHIMOTO MASAKI , TORIYAMA KOICHI , MATSUMOTO MASANORI
Abstract: PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having practically sufficient electric, chemical and mechanical performances and high durability of these performances.
SOLUTION: In the electrophotographic photoreceptor, a polymer compound (A) having the structural unit expressed by general formula (1) and a polymer compound (B) having the structural unit expressed by general formula (2) are incorporated into the photosensitive layer on the conductive base body. In formula (1), each of R
1 , R
2 , R
3 , R
4 , R
5 , R
6 , R
7 and R
8 represents a hydrogen atom, halogen atom, 1-6C alkyl group which may have substituents, 4-10C cyclic hydrocarbon group which may have substituents or aryl group which may have substituents. In formula (2), each of R
9 , R
10 , R
11 , R
12 , R
13 , R
14 , R
15 and R
16 represents a hydrogen atom, halogen atom, 1-6C alkyl group which may have substituents, 4-10C cyclic hydrocarbon group which may have substituents or aryl group which may have substituents, and Z is a group of atoms necessary to form a carbon ring which may have substituents or heterocyclic ring which may have substituents.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供具有足够的电，化学和机械性能以及这些性能的高耐久性的电子照相感光体。 解决方案：在电子照相感光体中，将具有由通式（1）表示的结构单元的高分子化合物（A）和具有由通式（2）表示的结构单元的高分子化合物（B））并入到感光层上 导电基体。 在式（1）中，R 1，R 2，R 3，R 4，R 5，R 6，R 7和R 8各自表示氢 原子，卤素原子，可具有取代基的1-6C烷基，可具有取代基的4-10C环状烃基或可具有取代基的芳基。 在式（2）中，R 9，R 10，R 11，R 12，R 13，R 14，R 15和R 16各自表示氢 原子，卤素原子，可具有取代基的1-6C烷基，可具有取代基的4-10C环状烃基或可具有取代基的芳基，Z是形成可具有取代基的碳环所必需的原子基团 或可具有取代基的杂环。
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公开(公告)号：JP2003066627A
公开(公告)日：2003-03-05
申请号：JP2001257595
申请日：2001-08-28
Applicant: Sharp Corp , シャープ株式会社
Inventor： MATSUMOTO MASANORI , SUGIMURA HIROSHI , KADOI MIKIO , HASHIMOTO MASAKI , KATAYAMA SATOSHI , TANAKA YUJI
IPC: G03G5/05
Abstract: PROBLEM TO BE SOLVED: To provide an image forming device having practically sufficient electric and mechanical performances and high durability in these performances and to provide a method for forming an image.
SOLUTION: An electrophotographic photoreceptor having a surface photosensitive layer into which a polymer compound having the structural unit expressed by general formula (1) is incorporated as a binder resin is used for the method for forming an image. The method includes at least one process in the processes of bringing an electrifying member into contact with the photosensitive layer to electrify the surface of the photoreceptor, of bringing a transfer member into contact with the photosensitive layer to transfer a developer used for the development on the photoreceptor, and of bringing a cleaning member into contact with the photosensitive layer to remove the developer not transferred but remaining on the photoreceptor. In formula (1), each of R
1 , R
2 , R
3 , R
4 , R
5 , R
6 , R
7 and R
8 represents a hydrogen atom, halogen atom, 1-6C alkyl group which may have substituents, 4-10C cyclic hydrocarbon group which may have substituents or aryl group which may have substituents.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供一种在这些性能中具有足够的电气和机械性能以及高耐久性的图像形成装置，并提供一种用于形成图像的方法。 解决方案：用于形成图像的方法使用具有表面感光层的电子照相感光体，其中具有由通式（1）表示的结构单元的聚合物化合物作为粘合剂树脂。 该方法包括使带电构件与感光层接触以使感光体的表面带电的过程中的至少一个过程，使转印构件与感光层接触以将用于显影的显影剂转印到 感光体，以及将清洁部件与感光层接触以除去未转印但保留在感光体上的显影剂。 在式（1）中，R 1，R 2，R 3，R 4，R 5，R 6，R 7和R 8各自表示氢 原子，卤素原子，可具有取代基的1-6C烷基，可具有取代基的4-10C环状烃基或可具有取代基的芳基。
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公开(公告)号：JP2006337687A
公开(公告)日：2006-12-14
申请号：JP2005161842
申请日：2005-06-01
Applicant: Sharp Corp , シャープ株式会社
Inventor： KANAZAWA TOMOKO , MORITA TATSUHIRO , KADOI MIKIO
Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method by which an electrophotographic photoreceptor which enhances the image quality of a formed image and has high durability is efficiently produced at a low cost with a more space-saving apparatus. SOLUTION: The electrophotographic photoreceptor has at least a charge transport layer containing a charge transport material and a protective layer stacked on a charge generating layer formed on a cylindrical substrate 5, wherein the charge transport layer is formed by applying a coating liquid for a charge transport layer on the charge generating layer formed on a surface of the cylindrical substrate 5 with a roll coat type applying device 22, and the protective layer is formed by applying a coating liquid for a protective layer on the charge transport layer with an ink-jet applying device 21. COPYRIGHT: (C)2007,JPO&INPIT
Abstract translation: 解决的问题：提供一种以更节省空间的设备以低成本有效地生产提高形成图像的图像质量并具有高耐久性的电子照相感光体的制造方法。 解决方案：电子照相感光体至少具有电荷输送层和层叠在形成于圆筒状基板5上的电荷产生层上的保护层的电荷输送层，其中，电荷输送层通过在 在辊筒涂敷装置22上形成在圆筒形基片5的表面上的电荷产生层上的电荷输送层，保护层通过在墨水的电荷输送层上涂敷保护层用涂布液而形成 喷墨装置21.版权所有（C）2007，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2005215336A
公开(公告)日：2005-08-11
申请号：JP2004022033
申请日：2004-01-29
Applicant: Sharp Corp , シャープ株式会社
Inventor： FUJII ICHIRO , OBATA TAKATSUGU , KADOI MIKIO
CPC classification number: G03G15/75 , G03G5/0605 , G03G5/0609 , G03G5/0612 , G03G5/0614 , G03G5/0616 , G03G5/0618 , G03G5/0666 , G03G5/0672 , G03G2215/00957
Abstract: PROBLEM TO BE SOLVED: To provide an image forming apparatus which excels in the electrostatic propensity, sensitivity and optical responsiveness of an electrophotographic photoreceptor, and can form images of high quality and high resolution at a high speed under various environments. SOLUTION: The electrophotographic photoreceptor 2, containing an enamine compound expressed by a specific formula, for example, as a charge transfer material, is mounted on the image forming apparatus 1, and the volume average particle size of the toner included in a developer 50 housed in a developing device 33 is set at 4 to 7 μm. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：提供一种在电子照相感光体的静电倾向，灵敏度和光学响应性方面优异的图像形成装置，并且可以在各种环境下以高速度形成高质量和高分辨率的图像。 解决方案：包含特定配方的烯胺化合物例如电荷转移材料的电子照相感光体2安装在图像形成装置1上，并且包含在图像形成装置1中的调色剂的体积平均粒径 容纳在显影装置33中的显影剂50设定为4〜7μm。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004264359A
公开(公告)日：2004-09-24
申请号：JP2003036890
申请日：2003-02-14
Applicant: Sharp Corp , シャープ株式会社
Inventor： KADOI MIKIO , FUKUSHIMA KOUTARO , TORIYAMA KOICHI , UCHIUMI HISAYUKI
Abstract: PROBLEM TO BE SOLVED: To provide an image forming apparatus which excels in cleanability of an electrophotographic photoreceptor and can form an image of high quality and high resolution. SOLUTION: The photoreceptor 2 to be formed with an electrostatic latent image by exposure with the light meeting image information relating to the image forming apparatus 1 is set at 20 to 35 mN/m in its surface free energy (γ) and a toner which is included in a developer housed in a developing device 29 and forms the toner image by developing the electrostatic latent image is set at 4 to 7 μm in its volume average particle size. The γ of the photoreceptor 2 is set at the small range in response with the reduction in the grain size of the toner as described above, as a result of which the specific surface area is increased and the adhesion to the surface of the photoreceptor 2 is suppressed and the good cleanability can be obtained even with small-grain size toner having the greater effect of the intermolecular force. An improvement in the cleanability and the formation of the high-quality image can be both achieved. COPYRIGHT: (C)2004,JPO&NCIPI
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公开(公告)号：JP2004085919A
公开(公告)日：2004-03-18
申请号：JP2002247160
申请日：2002-08-27
Applicant: Sharp Corp , シャープ株式会社
Inventor： MATSUO RIKIYA , TORIYAMA KOICHI , KADOI MIKIO , SUGIMURA HIROSHI , SAKAMOTO MASAYUKI , MATSUMOTO MASANORI
Abstract: PROBLEM TO BE SOLVED: To enhance convenience particularly in recovering a vibration isolating sheet member which is fitted to the inner wall face of an electrophotographic photoreceptor drum having a photosensitive layer on the surface of a hollow cylindrical substrate. SOLUTION: The device for recovering the vibration isolating member 2 is structured in a manner that a sheet-like isolating member 2 is fitted to the inner wall face of the hollow cylindrical substrate (substrate) 13 of the photoreceptor drum 1 and that a shaft 3 with an air sucking part can be inserted inside the member 2. Also, the member 2 is sucked to and held on the shaft 3 by starting air suction and separated from the inner wall face of the substrate 13 of the photoreceptor drum 1. In addition, the member 2 after the separation is designed to be taken out from inside the substrate 13 while being sucked to and held on the shaft 3. As a result, the sheet-like member 2 fitted to the inner wall face of the substrate 13 can be recovered in a reusable condition without being stained. COPYRIGHT: (C)2004,JPO
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公开(公告)号：JP2003076049A
公开(公告)日：2003-03-14
申请号：JP2001271529
申请日：2001-09-07
Applicant: Sharp Corp , シャープ株式会社
Inventor： KADOI MIKIO , TANAKA YUJI , HASHIMOTO MASAKI , SUGIMURA HIROSHI , KATAYAMA SATOSHI
Abstract: PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having high resolution, high sensitivity and practically sufficient characteristics with excellent stability for repeated use.
SOLUTION: The electrophotographic photoreceptor has a base coating layer containing acicular and/or dendritic titanium oxide particles, a charge generating layer containing a charge generating material and a charge transfer layer containing a charge transfer material all stacked on a conductive supporting body. The charge generating material consists of a crystalline titanyl phthalocyanine composition showing peaks at 7.5°, 9.0°, 12.6°, 18.1°, 22.5°, 24.3°, 25.4°, 27.3° and 28.7° Bragg angles (2θ±0.20) in the X-ray diffraction spectrum for CuKα characteristic X-rays (1.5418 Å wavelength). The characteristic of the photoreceptor are further improved by combining the above charge generating layer and a specified styryl, aromatic amine or aminostilbene-based charge transfer material.
COPYRIGHT: (C)2003,JPOAbstract translation: 要解决的问题：提供具有高分辨率，高灵敏度和实际上足够的特性的电子照相感光体，其重复使用具有优异的稳定性。 解决方案：电子照相感光体具有包含针状和/或树枝状氧化钛颗粒的基底涂层，含有电荷产生材料的电荷产生层和包含电荷转移材料的电荷转移层，其全部堆叠在导电支撑体上。 电荷产生材料由结晶钛酞菁组合物组成，其显示出在7.5度，9.0度，12.6度，18.1度，22.5度，24.3度，25.4度，27.3度， 和28.7度 CuKα特征X射线（1.5418A）的X射线衍射光谱中的布拉格角（2θ±0.20）。 通过组合上述电荷产生层和特定的苯乙烯基，芳族胺或氨基茋基电荷转移材料，进一步提高感光体的特性。
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10.发明专利
公开(公告)号：JP2003043716A
公开(公告)日：2003-02-14
申请号：JP2001231898
申请日：2001-07-31
Applicant: Sharp Corp , シャープ株式会社
Inventor： KATAYAMA SATOSHI , KADOI MIKIO , TANAKA YUJI , HASHIMOTO MASAKI , SUGIMURA HIROSHI
Abstract: PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor having high resolution, high sensitivity and high durability and to provide an image forming device which uses the photoreceptor. SOLUTION: The photosensitive layer of the electrophotographic photoreceptor contains a crystalline phthalocyanine compound as a charge generating material showing peaks at 7.5 deg., 9.0 deg., 12.6 deg., 18.1 deg., 22.5 deg., 24.3 deg., 25.4 deg., 27.3 deg. and 28.7 deg.. Bragg angles (2θ±0.2 deg.) in the X-ray diffraction spectrum by using the CuKα characteristic X rays (at 1.5418 Å wavelength) and contains a polymer compound essentially comprising the structural unit expressed by general formula [1] (not shown) as a binder resin. The photoreceptor is used for the image forming device. Moreover, by using the combination of titanium oxide in a specified form with a specified charge transfer material for the baser layer, more excellent characteristics can be obtained.
Abstract translation: 要解决的问题：提供具有高分辨率，高灵敏度和高耐久性的电子照相感光体，并提供使用感光体的图像形成装置。 解决方案：电子照相感光体的感光层含有作为电荷产生材料的结晶酞菁化合物，在7.5度，9.0度，12.6度，18.1度，22.5度，24.3度，25.4度， 27.3度 通过使用CuKα特征X射线（在波长为1.5418）的X射线衍射光谱中的28.7度布拉格角（2θ±0.2度），并且包含基本上包含由通式[1]表示的结构单元的聚合物化合物 ]（未示出）作为粘合剂树脂。 感光体用于图像形成装置。 此外，通过使用规定形式的氧化钛与用于底层的规定的电荷转移材料的组合，可以获得更优异的特性。
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