SHEET CONVEYANCE MECHANISM

• Main Authors: IWATA KAZUYUKI, KONDO SATOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 08.03.2018
• Subjects: CONVEYING; CORRECTION OF TYPOGRAPHICAL ERRORS; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PACKING; PERFORMING OPERATIONS; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; STORING; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To provide a sheet conveyance mechanism contrived to suppress reduction of correction force imparted to a sheet portion even when sagging occurs in a portion before correction.SOLUTION: A sheet conveyance mechanism 10 includes: a platen roller 7 which conveys a sheet portion P drawn from roll sheet R wound into a roll shape with an internal surface Pi of the long sheet turned to the inside; a correction member 3 which is arranged on an upstream side in a conveyance direction of the sheet portion P of the platen roller 7, has the conveying sheet portion P having a circumferential surface 31 wound with an external surface Po turned to the inside, and corrects a curl of the sheet portion P; and a floating prevention section 51 which prevents an upstream end P11 in the conveyance direction of a wind-hook portion P1 in the sheet portion P from being separated from an upstream end contact position 31a with which the upstream end should be in contact in the circumferential surface 31.SELECTED DRAWING: Figure 2 【課題】矯正前部分に弛みが生じた場合であっても、用紙部分に付与される矯正力の減少を抑える工夫がなされた用紙搬送機構を提供する。【解決手段】長尺の用紙の内面Ｐｉを内側にしてロール状に巻かれたロール紙Ｒから引き出された用紙部分Ｐを搬送するプラテンローラ７と、プラテンローラ７よりも用紙部分Ｐの搬送方向の上流側に配置され、搬送中の用紙部分Ｐが、外面Ｐｏを内側にして巻き掛けられる円周面３１を有し、用紙部分Ｐの巻き癖を矯正する矯正部材３と、用紙部分Ｐにおける巻掛部分Ｐ１のうちの搬送方向の上流端Ｐ１１が、円周面３１における、本来なら接するはずの上流端接触位置３１ａから離れることを防止する浮き上がり防止部５１とを備えた用紙搬送機構１０である。【選択図】図２