Sheet separating/conveying mechanism and sheet conveying apparatus therewith

Abstract

A paper separating / conveying mechanism (30) has an upper unit (30a) and a lower unit (30b). In the upper unit (30a), paper feeding rollers (31) and other components are provided. In the lower unit (30b) ), a separation roller (32), an arm (36), and other parts are provided. The arm part (36) is L-shaped in the plan view, and it is made of two movable levers (36a) on the left and right, and the two movable levers are parallel to each other, and are connected with the two ends of the central shaft (23b) and the pivot (36b). contact, the pivot of which supports the movable lever (36a) so that it can be turned in the direction indicated by the arrow (BB'). The end of the movable lever (36a) is formed with locking holes (39), and the lower end of the extension spring (38) is locked in these locking holes (39). The lower unit (30b) is provided with a force regulating member (45), which is formed with locking parts (42a) and (42b), which are made to protrude left and right, and can adjust the extension spring (38 ) in the locked position at the upper end.

Description

technical field [0001] The present invention relates to a sheet conveying apparatus used in an image forming apparatus such as a digital copier or a laser printer, for conveying sheets of copy paper or sheets of an original. More particularly, the present invention relates to a paper separating / conveying mechanism that separates paper from a stack of paper one by one and then conveys the paper. Background technique [0002] Figure 9 The configuration of a conventional image forming apparatus is shown. In this image forming apparatus (such as a printer) 1, in order to form an image, a photoconductor drum 5 that rotates clockwise in the figure is uniformly charged by a charging unit 4, and then, is charged with light emitted from an exposure unit (such as a laser scanning unit) 7. A laser beam according to original image data forms an electrostatic latent image on the photoconductor drum 5, after which developer (hereinafter referred to as "toner") is attached to the electro...

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Problems solved by technology

[0017] But the inconvenience is that: for Figure 12 In the shown configuration, since the tension spring 38 is coupled at a position in the axially middle portion of the separation roller 32, it is impossible to independently adjust the forces on the left and right sides.

By the way, although the above description is directed to the paper feeding cassette provided in the image forming apparatus as a paper feeding source, an original feeding device (ADF-Automatic Document Feeder) that automatically feeds original sheets may be used The same problem will be encountered with the paper feeding device used as the feeding source of the interleaved paper

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