Manufacturing container or tube from paper; or other manufacturi – Container making – Pliable container
Reexamination Certificate
2002-08-14
2004-05-04
Durand, Paul (Department: 3721)
Manufacturing container or tube from paper; or other manufacturi
Container making
Pliable container
C493S424000, C493S442000
Reexamination Certificate
active
06730010
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a sheet folding method for folding the sheet, sheet folding apparatus, and sheet finisher by which the sheet on which an image is formed is folded after the image formation, and image forming apparatus.
In Japanese Tokkaihei No. 10-194586, or Tokkai No. 2002-060127, as the sheet folding apparatus, the apparatus by which the folding is conducted by using a knife-like folding member, or an apparatus by which, by pressing the sheet leading edge to the stopper and conveying the sheet, the sheet is bent and folded, is proposed.
In the former folding apparatus, the apparatus becomes large because the knife-like folding member is reciprocally moved, and there is a problem when it is used for the sheet finisher used as an auxiliary device of the image forming apparatus, and in the latter folding apparatus, there is a problem that it is difficult to fold the sheet at the accurate position.
SUMMARY OF THE INVENTION
An object of the present invention is to solve the above problem in the conventional sheet folding apparatus.
The object of the present invention is attained by any one of the following Structures (1) to (20).
(1) A sheet folding method which is characterized in that: it has the first introduction process to introduce a sheet between the first rotary folding body and the first rotary pressure-contact body, and between the second rotary folding body and the second rotary pressure-contact body, by using the first conveying means composed of the first rotary folding body and the first rotary pressure-contact body and the second conveying means which is composed of the second rotary folding body and the second rotary pressure-contact body and arranged upstream of the first conveying means; the first folding process in which, under the condition that the first rotary folding body is in contact with the first rotary pressure-contact body, the second rotary folding body is in contact with the second rotary pressure-contact body, and the first rotary folding body is in contact with the second rotary folding body, when the first and second rotary folding bodies are rotated in the reversal direction to each other, the conveying force of reversal directions to each other is acted by the first conveying means and the second conveying means and the sheet is bent and a fold is formed, and the fold of the sheet is conveyed between the first rotary folding body and the second rotary folding body and the sheet is folded; the second introduction process to introduce the sheet folded by the first folding process between the third rotary folding body and the third rotary pressure-contact body, and between the fourth rotary folding body and the fourth rotary pressure-contact body, by using the third conveying means composed of the third rotary folding body and the third rotary pressure-contact body, and the fourth conveying means which is composed of the fourth rotary folding body and the fourth rotary pressure-contact body and arranged upstream the third conveying means; and the second folding process in which, under the condition that the third rotary folding body is in contact with the third rotary pressure-contact body, the fourth rotary folding body is in contact with the fourth rotary pressure-contact body, and the third rotary folding body is in contact with the fourth rotary folding body, when the third and fourth rotary folding bodies are rotated in the reversal direction to each other, the conveying force of reversal directions to each other is acted by the third conveying means and the fourth conveying means and the sheet is bent and a fold is formed, and the fold of the sheet is conveyed between the third rotary folding body and the fourth rotary folding body and the sheet is folded.
(2) A sheet folding method according to Structure (1), wherein, in the first introduction process, the first rotary pressure-contact body is brought into contact with the first rotary folding body, and the second rotary folding body and the second rotary pressure-contact body are separated from each other, and the sheet is conveyed and introduced by the first conveying means.
(3) A sheet folding method according to Structure (1), wherein, in the first introduction process, the second rotary pressure-contact body is brought into contact with the second rotary folding body, and the first rotary folding body and the first rotary pressure-contact body are separated from each other, and the sheet is conveyed and introduced by the second conveying means.
(4) A sheet folding method according to Structure (1), wherein, in the second introduction process, the third rotary pressure-contact body is brought into contact with the third rotary folding body, and the fourth rotary folding body and the fourth rotary pressure-contact body are separated from each other, and the sheet is conveyed and introduced by the third conveying means.
(5) A sheet folding method according to Structure (1), wherein, in the second introduction process, the fourth rotary pressure-contact body is brought into contact with the fourth rotary folding body, and the third rotary folding body and the third rotary pressure-contact body are separated from each other, and the sheet is conveyed and introduced by the fourth conveying means.
(6) A sheet folding method according to Structure (1), wherein, in the first introduction process, the first rotary pressure-contact body is brought into contact with the first rotary folding body, and the second rotary folding body is separated from the first rotary folding body and the second rotary pressure-contact body from each other, and by driving the first rotary folding body, the sheet is conveyed and introduced by the first conveying means.
(7) A sheet folding method according to Structure (1), wherein, in the first introduction process, the second rotary pressure-contact body is brought into contact with the second rotary folding body, and the first rotary folding body is separated from the second rotary folding body and the first rotary pressure-contact body from each other, and by driving the second rotary folding body, the sheet is conveyed and introduced by the second conveying means.
(8) A sheet folding method according to Structure (1), wherein, in the second introduction process, the third rotary folding body is brought into contact with the third rotary pressure-contact body, and the fourth rotary folding body is separated from the third rotary folding body and the fourth rotary pressure-contact body from each other, and by driving the third rotary folding body, the sheet is conveyed and introduced by the third conveying means.
(9) A sheet folding method according to Structure (1), wherein, in the second introduction process, the fourth rotary folding body is brought into contact with the fourth rotary pressure-contact body, and the third rotary folding body is separated from the fourth rotary folding body and the third rotary pressure-contact body from each other, and by driving the forth rotary folding body, the sheet is conveyed and introduced by the fourth conveying means.
(10) A sheet folding method according to Structure (1), wherein, in the first introduction process, under the condition that the first rotary pressure-contact body is separated from the first rotary folding body, and the second rotary pressure-contact body is separated from the second rotary folding body, the sheet is introduced by the introduction means.
(11) A sheet folding method according to Structure (1), wherein, in the second introduction process, under the condition that the third rotary pressure-contact body is separated from the third rotary folding body, and the fourth rotary pressure-contact body is separated from the fourth rotary folding body, the sheet is introduced by the introduction means.
(12) A sheet folding method according to Structure (1), wherein, in the first introduction process, the first rotary folding body and the second rotary folding body are separated from each other, and under the condition that the first rotary pressure-contact b
Shida Toshio
Tsuchiya Tsuyoshi
Wakabayashi Hiroyuki
Yamakawa Mikihiro
Durand Paul
Konica Corporation
Muserlian Lucas and Mercanti
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