Sheet, sheet conveying apparatus and sheet conveying method

Patent metadata

Field	Value
Publication number	US-9914614-B2
Application number	US-201514644675-A
Country	US
Kind code	B2
Filing date	Mar 11, 2015
Priority date	Sep 26, 2014
Publication date	Mar 13, 2018
Grant date	Mar 13, 2018

Abstract

An embodiment of the invention is directed to a sheet, wherein a conveying direction of the sheet relative to a sheet conveying apparatus is determined; the sheet is formed with a crease along which to fold the sheet and that is smaller than or equal to 90 μM in depth and extends in a direction that crosses the conveying direction; and a grammage of the sheet is in a range of 200 to 370 g/m 2 .

First claim

What is claimed is:

1. A sheet, wherein
a conveying direction of the sheet relative to a sheet conveying apparatus is determined;
the sheet is formed with a crease along which to fold the sheet and that is smaller than or equal to 90 μm in depth and extends in a direction that crosses the conveying direction; and
a grammage of the sheet is in a range of 200 to 370 g/m 2 .

2. The sheet according to claim 1 , wherein the depth of the crease is larger than or equal to 40 μm.

3. The sheet according to claim 1 , wherein a coefficient of static friction that occurs in conveying a topmost one of a plurality of the sheets stacked is smaller than or equal to 0.8.

4. The sheet according to claim 1 , wherein a predetermined shape of the sheet is formed when the sheet is folded along the crease.

5. The sheet according to claim 1 , which is formed into a flat file folder when folded along the crease.

6. A sheet wherein:
a conveying direction of the sheet relative to a sheet conveying apparatus is determined; and
the sheet is formed with a crease that has a predetermined depth and extends in a direction that crosses the conveying direction, the predetermined depth being larger than a value below which a break-at-crease occurs when the sheet is folded at the crease and smaller than a depth above which a conveyance failure occurs due to hooking between the crease of a topmost one of a plurality of the sheets stacked on a sheet bearing unit of the sheet conveying apparatus and the crease of a sheet immediately underlying the topmost sheet in conveying the topmost sheet.

7. A sheet conveying apparatus comprising a conveying unit that conveys a sheet, and a sheet bearing unit on which the sheet to be conveyed is placed, wherein:
a conveying direction relative to the sheet conveying apparatus is determined for the sheet to be placed on the sheet bearing unit;
the sheet is formed with a crease that is smaller than or equal to 90 μm in depth and extends in a direction that crosses the conveying direction; and
a grammage of the sheet is in a range of 200 to 370 g/m 2 .

8. The sheet conveying apparatus according to claim 7 , the depth of the crease is larger than or equal to 40 μm.

9. A sheet conveying method, which comprises: conveying a sheet for which a conveying direction relative to a sheet conveying apparatus is determined, wherein a grammage of the sheet is in a range of 200 to 370 g/m 2 and is formed with a crease that is smaller than or equal to 90 μm in depth and extends in a direction that crosses the conveying direction.

10. The sheet conveying method according to claim 9 , wherein the depth of the crease is larger than or equal to 40 μm.

11. A sheet, wherein
a conveying direction of the sheet relative to a sheet conveying apparatus is determined;
the sheet is formed with a crease along which to fold the sheet and that extends in a direction that crosses the conveying direction;
in case the crease is convex upward in a state that the sheet is placed on a sheet bearing unit of the sheet conveying apparatus, an upstream-side rising portion, in the conveying direction, of the crease is inclined more gently than a downstream-side rising portion of the crease; and
in case the crease is concave upward in a state that the sheet is placed on the sheet bearing unit of the sheet conveying apparatus, a downstream-side falling portion, in the conveying direction, of the crease is inclined more gently than an upstream-side falling portion of the crease.

12. The sheet according to claim 11 , wherein the sheet is formed with a convex crease in which the upstream-side rising portion is inclined more gently than the downstream-side rising portion and a concave crease in which the downstream-side falling portion is inclined more gently than the upstream-side falling portion.

13. The sheet according to claim 11 , wherein in the convex crease an upstream-side rising bent portion that connects the upstream-side rising portion and an upstream-side flat portion that is located upstream of the upstream-side rising portion is smaller in curvature than a downstream-side rising bent portion that connects the downstream-side rising portion and a downstream-side flat portion that is located downstream of the downstream-side rising portion.

14. The sheet according to any claim 11 , wherein in the concave crease a downstream-side falling bent portion that connects the downstream-side falling portion and a downstream-side flat portion that is located downstream of the downstream-side falling portion is smaller in curvature than an upstream-side falling bent portion that connects the upstream-side falling portion and an upstream-side flat portion that is located upstream of the upstream-side falling portion.

15. The sheet according to claim 11 , wherein the sheet is used for formation of a flat file folder.

16. A sheet, wherein
a conveying direction of the sheet relative to a sheet conveying apparatus is determined;
the sheet is formed with a crease along which to fold the sheet and that extends in a direction that crosses the conveying direction;
in case the crease is convex upward in a state that the sheet is placed on a sheet bearing unit of the sheet conveying apparatus, an upstream-side rising bent portion that connects an upstream-side rising portion in the conveying direction and an upstream-side flat portion that is located upstream of the upstream-side rising portion is smaller in curvature than a downstream-side rising bent portion that connects a downstream-side rising portion in the conveying direction and a downstream-side flat portion that is located downstream of the downstream-side rising portion; and
in case the crease is concave upward in a state that the sheet is placed on the sheet bearing unit of the sheet conveying apparatus, a downstream-side falling bent portion that connects a downstream-side falling portion in the conveying direction and a downstream-side flat portion that is located downstream of the downstream-side falling portion is smaller in curvature than an upstream-side falling bent portion that connects an upstream-side falling portion in the conveying direction and an upstream-side flat portion that is located upstream of the upstream-side falling portion.

17. The sheet according to claim 16 , wherein the sheet is formed with a convex crease in which the upstream-side rising bent portion is smaller in curvature than the downstream-side rising bent portion and a concave crease in which the downstream-side falling bent portion is smaller in curvature than the upstream-side bent falling portion.

Assignees

• Fuji Xerox Co Ltd

Inventors

• Tsutsumi Kojiro
• Yukawa Toshiyasu
• Harada Katsumi
• Takeda Kunishirou

Classifications

• B42P2241/22

  Sheets or cards with additional means allowing easy feeding through printers · CPC title

• B65H37/06 Primary

  for folding · CPC title

• B42D15/008

  Foldable or folded sheets · CPC title

• B65H2301/5126

  Embossing, crimping or similar processes · CPC title

• B65H2701/122

  Projecting portions · CPC title