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An image forming apparatus, rotating body positioning device and method for positioning the rotating body

A technology of rotating bodies and images, which is applied to the equipment of the electric recording process using the charge pattern, the electric recording process using the charge pattern, and the electric recording technique, etc., and can solve problems such as difficulties, complicated operation methods, and poor operability

Active Publication Date: 2007-01-10
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, in each of the above technologies, there are many problems such as complicated and difficult operation methods such as attachment and detachment of positioning components, poor operability and high cost.

Method used

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  • An image forming apparatus, rotating body positioning device and method for positioning the rotating body
  • An image forming apparatus, rotating body positioning device and method for positioning the rotating body
  • An image forming apparatus, rotating body positioning device and method for positioning the rotating body

Examples

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Effect test

Deformed example 1

[0280] Figure 27 to Figure 29 Modification 1 of the first embodiment is shown. Compared with the first embodiment, the modification 1 is mainly different in that it has a structure capable of improving the holding and sliding performance of the pressing member with the wedge portion 53 . That is, it is the same as the first embodiment except that the pressing member 44B is used instead of the pressing member 44A constituting the pressing means.

[0281] As in the first embodiment, with respect to Figure 27 to Figure 29 The positioning holding member 32A, not shown, is provided with a sliding member 41A that slides laterally. A notched curved shape 41a serving as a first locking portion is formed on this slide member 41A. In the pressing member 44B having the conical wedge portion 53 , a notched curved shape 44 a serving as a second locking portion and a long hole 44 b are formed opposite to the notched curved shape 41 a of the slide member 41A. Also, the sliding member 4...

Deformed example 2

[0286] Figure 30 with Figure 31 Modification 2 of Modification 1 is shown. Compared with Modification 1, this Modification 2 is mainly different in that a pressing member 44C is used instead of the pressing member 44B, and the rest is the same as Modification 1.

[0287] The contact portion between the sliding member 41A of the pressing member 44C and the guide surface 60 is in contact with both ends of the upper surface of the pressing member 44C. Accordingly, since the contact area between the pressing member 44C and the sliding member 41A becomes small, friction when the pressing member 44C moves laterally can be reduced.

[0288] Additionally, if Figure 30 As shown, the shape of both ends of the upper surface of the pressing member 44C is not arc-shaped, but a substantially linear contact with a straight line 44c. So, for example Figure 29 As shown, when the sliding member 41A slides laterally and the pressing member 44C pushes the bearing 17 of the photoreceptor ...

Deformed example 3

[0293] Fig. 34 shows Modification 3 of the first embodiment. The Modification 3 and Figure 8 to Figure 26 , Figure 32 and Figure 33 Compared with the first embodiment shown, its main difference lies in that the pushing means 88 is arranged on one side of the positioning holding member 32A, and when the bearings 17 of the carrier supporting members 15 in the process cartridges 1Y to 1BK are held When each surface 78, 79 of each mounting hole 77 is positioned, the pushing means 88 can push each bearing 17 directly below (approximately vertically below) in close contact with each surface 78, 79. Others are the same as the first embodiment.

[0294] Here, when the bearing 17 of each carrier supporting member 15 is held on each surface 78, 79 of each mounting hole 77, in other words, the so-called "carrier supporting member is held on the holding member" which expresses it as a superordinate concept. The expression “when the opening holding portion of the slider 41A is on th...

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Abstract

The invention provides an image forming apparatus in which a position of an image carrier unit can be properly determined to the image forming apparatus body by a simple position determining composition and the cost is brought down by improving operability. The position determining unit determines the position for each supporting shaft 16 by holding a bearing 17 attached to the supporting shaft 16 supporting a photoreceptor drum by self-weight to two surfaces of an attaching hole 77 formed on a position determining holding member 32A which is attached by having its position determined to the image forming apparatus main body. Furthermore, the unit is provided with a wedge section 53 between each bearing 17 and a guide surface 50 and each pressurizing member 44A which is energized by a U shaped spring 71 is forced into the wedge section 53.

Description

technical field [0001] The present invention relates to an image forming apparatus such as a copying machine, a facsimile machine, a printer, a plotter, or a multifunctional machine having the above multiple functions, a positioning device for a rotating body, and a positioning method for a rotating body. Background technique [0002] Image forming apparatuses of the above-mentioned type configured as electrophotographic copiers, facsimile machines, printers, plotters, etc., and multifunctional machines having the above-mentioned multiple functions are conventionally known. [0003] In this type of image forming apparatus, especially in a multi-color image forming apparatus having a plurality of image carriers, for example, a drum-shaped photoreceptor (hereinafter referred to as "photoreceptor drum") will be provided. A plurality of image carrier units (process cartridges) that are detachable from the main body of the image forming apparatus, such as the image carrier, are c...

Claims

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Application Information

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IPC IPC(8): G03G15/00
Inventor 村野顺一松本和悦
Owner RICOH KK
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