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Image forming apparatus

An image and discharge roller technology, applied in the directions of transportation and packaging, sending objects, function instructions, etc., can solve the problems of high cost and complicated mechanical structure of the image forming device, and achieve the effect of increasing the separation width

Active Publication Date: 2012-02-08
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, in the above-mentioned conventional configuration, although the separation width of the discharged sheets can be increased without increasing the width of the image forming apparatus in the axial direction of the discharge roller, it is necessary to change the existing mechanism of the discharge roller. structure, there is a problem of complicating and increasing the cost of the mechanical structure of the image forming apparatus.

Method used

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Experimental program
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Embodiment

[0140] Next, since the relationship between the separation width Sb of the paper P and the discharge timing of the paper P was investigated, it will be described below.

[0141] In this embodiment, in the image forming apparatus 100, the third peripheral speed Vr3 of the discharge roller 31 is set to 186 mm / s, and the maximum speed Vsmax of the displacement movement speed Vs of the discharge roller 31 is set to 140 mm / s, so that The discharge roller 31 is decelerated from a position 4.5 mm in front of the displacement ends α, β, and the displacement L of the discharge roller displacement unit 30 toward the displacement direction X is set to 30 mm (from the central position of the displacement direction X to 30 mm). Each side is 15 mm), using color standard paper as the paper P, and measuring the separation width Sb of the paper P discharged to the discharge tray 91 by changing the discharge timing of the paper P.

[0142] The measurement results are shown in Table 1 and Figu...

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Abstract

An image forming apparatus (100) includes a rotation driving portion (40) configured to drive rotation of a discharge roller (31), a shift driving portion (50) configured to drive shift of the discharge roller (31), thereby causing shift, and a control portion (200) configured to control driving of rotation of the rotation driving portion (40) and driving of shift of the shift driving portion (50). The control portion (200) controls a discharge timing for sheet (P) that is being discharged such that a trailing edge (P2) of the sheet (P) moves past the discharge roller (31) during the shift of the discharge roller (31).

Description

[0001] This application claims priority based on Japanese Patent Application No. 2010-166100 filed on July 23, 2010 in Japan. The entire content thereof is incorporated by reference in this application by stating here. technical field [0002] The present invention relates to image forming devices such as printers, copiers, and compound machines. Background technique [0003] As a conventional image forming apparatus, there is known a device capable of separating the sheets discharged by the discharge rollers by displacing the discharge rollers that discharge sheets such as recording paper to the outside in the axial direction of the discharge rollers (see, for example, Japanese Patent Application Laid-Open No. 3-42460). [0004] In such an image forming apparatus, depending on the type of sheets, especially when using sheets other than specified standard sheets, for example, due to differences in surface smoothness and unit weight, the number of sheets discharged to the sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H29/20
CPCB65H2513/40B65H2557/242B65H2404/1424B65H2801/06B65H2513/50B65H2513/10B65H2511/20B65H33/08B65H2220/01B65H2220/02B65H2220/11
Inventor 木村正治藤田正彦青木浩司小林祥志
Owner SHARP KK