JPS6418059U

JPS6418059U -

Info

Publication number: JPS6418059U
Application number: JP11184887U
Authority: JP
Priority date: 1987-07-21
Filing date: 1987-07-21
Publication date: 1989-01-30

Description

[Brief explanation of drawings]

第１図ａ，ｂ，ｃは、本考案の一実施例として
のＦＤ排紙モードの用紙搬送路切換機構近傍の構
成図、第２図ａ，ｂは、上記用紙搬送路切換機構
でのＦＵ排紙モードを示す構成図、第３図は、上
記用紙搬送路切換機構での、用紙先端が既にＦＤ
搬送ロール対に挾持された後、ＦＤ排紙モードか
らＦＵ排紙モードに切り換えられた状態を示す構
成図、第４図は、上記用紙搬送路切換機構で、用
紙先端が未だＦＤ搬送ロール対に挾持されないま
ま、ＦＤ排紙モードがＦＵ排紙モードに切り換え
られた状態を示す構成図、第５図は、本考案の適
用される画像形成装置の一例としての液晶プリン
タの概略構成図である。１……液晶プリンタ、１ａ……上部機体、１ｂ
……下部機体、１ｃ……ヒンジ部、２……感光体
ドラム、３……帯電器、４……印字ヘツド、５…
…現像器、６……クリーナ、７……転写器、８…
…給紙カセツト、９……給紙コロ、１０……搬送
ロール対、１１……定着器、１２……加熱ロール
、１３……加圧ロール、１４……定着後搬送ロー
ル対、１５……振り分けロール、１５ａ……円筒
基体、１５ｂ……ブラシ毛、１６……ＦＤ搬送ロ
ール対、１７……排紙ロール対、１８……ＦＤ用
搬送ガイド板、１９……ＦＵ用搬送ガイド板、２
０……ＦＤ用トレイ、２１……ＦＵ用トレイ、Ｔ
……用紙、Ａ……定着排紙部、Ｂ……用紙搬送路
切換機構、Ｄｐ……ＦＤ搬送路、Ｕｐ……ＦＵ搬
送路。 Figures 1a, b, and c are block diagrams of the vicinity of the paper conveyance path switching mechanism in the FD paper discharge mode as an embodiment of the present invention, and Figures 2a and b are diagrams of the FU in the paper conveyance path switching mechanism described above. FIG. 3 is a configuration diagram showing the paper ejection mode.
FIG. 4 is a configuration diagram showing a state in which the FD paper discharge mode is switched to the FU paper discharge mode after being held between the pair of transport rolls. FIG. 5 is a block diagram showing a state in which the FD paper discharge mode is switched to the FU paper discharge mode without being clamped. FIG. 5 is a schematic diagram of the structure of a liquid crystal printer as an example of an image forming apparatus to which the present invention is applied. 1...Liquid crystal printer, 1a...Upper body, 1b
... lower body, 1c ... hinge section, 2 ... photosensitive drum, 3 ... charger, 4 ... print head, 5 ...
...Developer, 6...Cleaner, 7...Transfer device, 8...
... Paper feed cassette, 9 ... Paper feed roller, 10 ... Transport roll pair, 11 ... Fixing device, 12 ... Heat roll, 13 ... Pressure roll, 14 ... Post-fixing transport roll pair, 15 ... Sorting roll, 15a... Cylindrical base, 15b... Brush bristles, 16... FD transport roll pair, 17... Paper ejection roll pair, 18... FD transport guide plate, 19... FU transport guide plate, 2
0... FD tray, 21... FU tray, T
...Paper, A...Fixing paper discharge section, B...Paper transport path switching mechanism, Dp...FD transport path, Up...FU transport path.

Claims

[Claims for Utility Model Registration] (1) In a switching mechanism for a paper transport path that branches in two directions toward the downstream side, a paper transport means disposed upstream of the branch position, and a paper transport means disposed at the branch position. 1. A paper conveyance path switching mechanism, comprising a distribution roll arranged so that the rotation direction can be freely switched, and a paper conveyance path being switched by switching the rotation direction of the distribution roll. (2) The paper conveyance path switching mechanism according to claim 1, wherein the sorting roll is a fur brush having brush bristles planted on its circumferential surface.