Substrate for photosensitive drum

A photosensitive drum and substrate technology, applied in optics, thin material processing, instruments, etc., can solve problems such as adverse effects on image quality, and achieve the effect of reducing driving force

Inactive Publication Date: 2014-04-23
RESONAC HOLDINGS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] On the other hand, when the surface state of the outer surface of the substrate is too close to a mirror surface, interference fringes occur due to multiple reflections of the laser light emitted from the exposure source at the interface in the photoreceptor layer and / or the outer surface of the substrate. Can sometimes adversely affect image quality

Method used

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  • Substrate for photosensitive drum
  • Substrate for photosensitive drum
  • Substrate for photosensitive drum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～13、 comparative example 1～3）

[0163] Used in Examples 1-7 and Comparative Examples 1-3 Figures 4A-4C The drawing apparatus 10 of the above-mentioned embodiment shown was used in Examples 8-13 Figure 5A and Figure 5B The drawing processing apparatus 110 shown performs a drawing process on the extruded aluminum tube 40 to obtain an extruded-drawn tube which is a non-cutting aluminum tube. Then, the extruded-drawn tube is sequentially cut to a predetermined length, chamfered at the cut end, and cleaned, thereby producing a base 41 for a photosensitive drum. The length of the base body 41 is 260 mm.

[0164] Next, if figure 1 The image forming surface 41aa of the outer surface 41a of the substrate 41 was evaluated as shown.

[0165] Next, if figure 2 As shown, a functionally separated organic photoreceptor layer 45 (that is, a charge generating layer 43 and a charge transporting layer 44 ) is coated on an image forming surface 41 aa of a substrate 41 via an overcoat layer 42 , thereby producing a pho...

Embodiment 1～13）

[0197] As shown in Table 1, when the area is greater than or equal to 1 μm 2 The first point that the total area ratio of the pits relative to the observation field area is greater than 2% and each area is greater than or equal to 1 μm 2 The average area of ​​the pits is less than 8μm 2 In the case where both of the second points are greater (that is, Examples 1 to 13), the occurrence of interference fringes can be prevented.

[0198] Furthermore, when the area is greater than or equal to 1 μm in all 2 The third point is that the total occupied area ratio of pits relative to the viewing field area is less than or equal to 15%, and each area is greater than or equal to 1 μm 2 The average area of ​​the pits is 20 μm or less 2 This fourth point and no area greater than or equal to 300μm 2 In the case of the fifth point (that is, Examples 1 to 7), which is a coarse pit, the generation of black spots can also be prevented.

[0199] Therefore, it can be confirmed that these poi...

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Abstract

A substrate (41) for a photosensitive drum is formed from an uncut metal pipe. In an observation visual field (52) in which an image-forming surface (41aa) of a surface (41a) of the substrate (41) is observed in a visual field having an arbitrary size, the total occupancy area ratio of pits having an area of 1 [mu]m2 or more with respect to the area of the observation visual field is greater than 2%, and the average area per pit having an area of 1 [mu]m2 or more is greater than 8 [mu]m2.

Description

technical field [0001] The present invention relates to, for example, a substrate for a photosensitive drum of an electrophotographic device (copier, printer, facsimile machine, etc.), and a method for manufacturing the substrate for a photosensitive drum. [0002] In this specification and claims, the term "aluminum" is used in the sense of including both pure aluminum and aluminum alloys unless otherwise specified. In addition, "upstream" and "downstream" mean upstream and downstream in the direction in which the metal pipe is drawn, respectively. Background technique [0003] A substrate used in photosensitive drums of electrophotographic devices such as copiers, printers, and facsimile machines is usually coated with an OPC (organic photoconductor) layer uniformly in thickness as an organic photoreceptor layer on its outer surface. The current mainstream function-separated organic photoreceptor has a charge generation layer (CGL) and a charge transport layer (CTL) seque...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G5/10G03G5/00
CPCG03G5/102B21C23/217G03G5/10Y10T428/12389
Inventor 青谷繁大出雅章
Owner RESONAC HOLDINGS CORPORATION
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