JPH0286955U

JPH0286955U -

Info

Publication number: JPH0286955U
Application number: JP16534288U
Authority: JP
Priority date: 1988-12-21
Filing date: 1988-12-21
Publication date: 1990-07-10

Description

[Brief explanation of drawings]

第１図は本考案の用紙先端部位置決め装置の下
部の構成を示す斜視図、第２図は用紙先端部位置
決め装置の用紙搬送路の断面図、第３図はその側
面図、第４図は本考案の別の実施例の斜視図、第
５図はコルゲーシヨンローラ装置の構成を示す正
面図、第５ａ図および第５ｂ図はそれぞれ本考案
のコルゲーシヨンローラ装置の別の実施例の正面
図、第６図は本考案の他の実施例の側面図、第７
図は従来の用紙先端部位置決め装置の側面図、第
８図ａとｂとはそれぞれ腰の弱い用紙と腰の強い
用紙との場合の用紙の湾曲状態の説明図であり、
第９図ａとｂとはそれぞれ第８図に対応した用紙
の突出状態の説明図である。図中の符号、１……用紙先端部位置決め装置、
２……上ガイド板、３……下ガイド板、５……ゲ
ート部材、７……スリツプローラ装置、８……搬
送ローラ装置、１０……湾曲板、１２……シート
状部材、１５……コルゲーシヨンローラ装置、１
６……上ローラ、１７……下ローラ、１８……フ
ランジ、２０……ウエイト部材。 FIG. 1 is a perspective view showing the structure of the lower part of the paper leading edge positioning device of the present invention, FIG. 2 is a sectional view of the paper conveyance path of the paper leading edge positioning device, FIG. 3 is a side view thereof, and FIG. FIG. 5 is a front view showing the configuration of a corrugation roller device, and FIGS. 5a and 5b are respectively a perspective view of another embodiment of the corrugation roller device of the present invention. A front view, FIG. 6 is a side view of another embodiment of the present invention, and FIG.
The figure is a side view of a conventional paper leading edge positioning device, and FIGS. 8a and 8b are explanatory diagrams of the curved state of paper in the case of weak paper and stiff paper, respectively.
FIGS. 9a and 9b are explanatory views of the protruding state of the paper corresponding to FIG. 8, respectively. Symbols in the figure: 1... Paper leading edge positioning device;
2... Upper guide plate, 3... Lower guide plate, 5... Gate member, 7... Slipper roller device, 8... Conveyance roller device, 10... Curved plate, 12... Sheet member, 15... Corrugation roller device, 1
6... Upper roller, 17... Lower roller, 18... Flange, 20... Weight member.

Claims

[Claims for Utility Model Registration] A gate member is disposed upstream of a recording section of an image forming apparatus, and a slip roller device is disposed upstream of a paper conveyance path with respect to the gate member.
In an apparatus configured to include a conveyance roller device disposed in a downstream portion to position and send out a leading end of a sheet of paper toward a recording section, upstream of a portion where the sheet is stopped by the gate member,
A paper deflection prevention means is arranged to prevent the paper from waving in the transport direction, and the length of the paper between the slit roller device and the gate member can be maintained constant by the deflection prevention means. A paper feed timing setting device characterized in that it is configured as follows.