Mita Industrial Co., Ltd.

Takeo Yoshihiro

Masayuki Mizuno

Kazuo Nakamura

Shuichi Akedo

Yoshiki Aoyama

Shinji Kameyama

Osamu Yoshimura

Hiroyoshi Ohmura

In one of aspects of the invention, an automatic sheet conveying mechanism comprises upper and lower casings mutually coupling sheet conveying paths in a releasable state, and a sheet guide plate for partitioning the sheet conveying paths together with the lower casing, guiding the lower surface of the sheet being conveyed, and defining the projecting extent of the functional parts supported by the lower casing into the sheet conveying path, in which the sheet guide plate is formed integrally with the lower casing.

Automatic sheet conveying mechanism

Plate sheet conveying mechanism having integrally formed sheet guide

A conveying roller conveying a paper has a stepped structure with the diameter of portion positioned at the middle in the axial direction of the conveying roller slightly larger than that on opposite sides or ends of the conveying roller. The center in the axial direction of such middle portion almost coincides with the center in the axial direction of a paper-supplying roller positioned upstream of the conveying roller. The promotion of the inclined conveyance of paper resulting from inclined supplying to the conveying roller is prevented, particularly in the case of a one-end standard paper-supplying mode wherein one side end in the direction of the width of paper is regulated by a paper-supplying guide. The middle roller portion is displaced axially toward the side of the paper-supplying guide. The forces of two springs for urging an image-read out device toward the conveying roller to be almost equal to each other. The distance in the axial direction from the center of the middle portion of the conveying roller to the spring disposed on the side opposite to the paper-supplying guide is slightly larger than the distance from such center to the spring disposed on the side of the paper-supplying guide.

Paper-supplying device for an image-forming apparatus

Growing community of inventors

Osaka, Japan

Takeo Yoshihiro