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Image-forming device

An image and paired technology, applied to the electrical recording process using charge graphics, equipment for the electrical recording process using charge graphics, electrical recording, etc., can solve the problem of image quality degradation

Active Publication Date: 2011-06-01
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the developer carried on the recording paper is detached from the paper due to the rubbing of the entry guide, resulting in a decrease in the quality of the image formed on the recording paper.

Method used

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Examples

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Embodiment Construction

[0027] Referring to Figure 1 to Figure 10 An image forming apparatus according to an embodiment of the present invention will be described. The image forming apparatus is a laser printer connected to a computer.

[0028] In FIG. 1, the image forming apparatus 1 of this embodiment is oriented such that the outline of the upper part is referred to as the upper side, and the right side is referred to as the "front side". The terms "upper", "lower", "front", "rear" are used throughout this specification to assume that the laser printer is oriented in the orientation in which it will be used.

[0029] The image forming apparatus 1 has a casing 3 forming the main body of the apparatus. A discharge tray 5 is provided on the top surface of the casing 3 for receiving and holding paper such as paper paper and O??HP paper (hereinafter referred to as "paper") discharged from the casing 3 after printing. . The casing 3 is formed with a discharge port 7 at a position immediately upstre...

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PUM

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Abstract

The image-forming device includes an image-forming unit, a fixing unit, a pair of first guides, and a pair of second guides. The recording sheet defines a width in a direction perpendicular to a sheet conveying direction. The image-forming unit forms a developing agent image on the recording sheet. The fixing unit includes a heating and a pressure roller. The heating roller heats the recording sheet discharged from the image-forming unit. The pressure roller presses the recording sheet against the heating roller. The heating roller and the pressure roller provide a nip point where the recording sheet is nipped therebetween. The nip point is offset in a thickness direction of the recording sheet from a plane along which the recording sheet is discharged from the image-forming unit. A sheet conveying path is provided from the image-forming unit to the fixing unit. The pair of first guides dispose on the conveying path and configure to contact with an image-forming side of the recording sheet at both widthwise edges thereof, for restraining the recording sheet from being displaced toward the image-forming side. The pair of second guides dispose on the conveying path and configure to contact with the image-forming side of the recording sheet at both widthwise edges thereof for restraining the recording sheet from being displaced toward the image-forming side, a distance between the pair of first guides in the widthwise direction being greater than a distance between the pair of second guides in the widthwise direction, and the pair of second guides being offset from the pair of first guides in the sheet conveying direction.

Description

technical field [0001] The present invention relates to an electrophotographic image forming apparatus. Background technique [0002] An electrophotographic image forming apparatus known in the art includes an image forming unit for transferring a developer image onto a recording sheet such as paper, and a fixing unit for heating the recording sheet to fix the developer image to the recording sheet. However, the developer is easily detached from the recording paper when the paper is conveyed from the image forming unit to the fixing unit along the conveying path. [0003] In addition, if the area (nip point) where the fixing unit pinches the recording paper is set at, for example, a position vertically shifted with respect to the direction in which the recording paper is discharged from the image forming unit, the direction in which the recording paper is conveyed when the recording paper is discharged from the image forming unit The rear edge is turned up sharply. [0004...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/01G03G15/20G03G15/00
CPCG03G15/2085G03G15/2028
Inventor 桥本洋平
Owner BROTHER KOGYO KK