摘要:
An image forming device includes a sheet container, an image former that forms an image on a surface of a sheet conveyed from the sheet container, and a re-conveyor that re-conveys the sheet to the image former which forms another image on an opposite surface of the sheet. The re-conveyor includes a first conveyance roller set and a second conveyance roller set that convey the sheet therebetween. The first conveyance roller set includes a first driving roller that receives a driving force and a first pinch roller that contacts the surface. The second conveyance roller set includes a second driving roller that receives the driving force and a second pinch roller that contacts the surface. The first driving roller has a greater coefficient of friction than the first pinch roller. The second pinch roller has a greater coefficient of friction than the first pinch roller.
摘要:
PROBLEM TO BE SOLVED: To provide a device wherein a paper sheet is corrected with respect to inclination position and distortion, especially creasing in the paper sheet is avoided while the paper sheet is supplied to a machine for processing the paper sheet. SOLUTION: In a structure, a holding force of conveyance belts 27, 28 in outside edge areas 27.1, 28.1 facing the paper sheet is greater than a holding force in inside areas 27.2, 28.2 arranged between the outside edge areas 27.1, 28.1 and facing the paper sheet. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a tissue paper winding and cutting device having a pre-winding roller. SOLUTION: This tissue paper winding and cutting device 100 includes a first winding roller 12, a core support plate 14 arranged near the first winding roller and forming a channel 3 between them, and the pre-winding roller 12 arranged near the first winding roller, having a peripheral directional surface opposed to the first winding roller and forming a narrowed passage 33 in the channel by projecting in the channel. The pre-winding roller rotates around a shaft 131 at a rotating speed slower than a rotating speed of the first winding roller in the opposite direction of the predetermined moving direction of thin paper 4 wound around a core. The core moved in the channel is temporarily held in the narrowed passage by a rotating speed difference between the pre-winding roller and the first winding roller, and the tissue paper 4 sent into the channel is wound around the core, and then, is pulled and broken. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To securely feed paper sheets P till the last paper sheet when the paper sheet P is loaded by letting a recording face face downward and is recorded by ink jet on the recording face facing upward through a U turn path while special surface processing is applied on one face (recording face) of the paper sheet P and the paper sheet is in a loading condition in which the face on which special surface processing is applied faces a surface of a base pad 79 and adheres to it closely and easily. SOLUTION: The base pad 79 having high coefficient of friction on a base spring 83 like a cantilever beam whose basic part is fixed on a lower face of a bottom plate 3b of a paper feeding cassette faces upward from a through hole 82. On the other hand, a base plate 80 having low coefficient of friction is fixed to an upper face of the bottom plate 3b on both sides of the through hole 82. A condition in which the surface of the base pad 79 protrudes from a surface of the base plate 80 and a condition in which the surface of the base pad 79 does not protrude from the surface of the base plate 80 can be selected depending on large or small pressing force of a paper feeding roller 6b. COPYRIGHT: (C)2006,JPO&NCIPI
摘要:
PROBLEM TO BE SOLVED: To separate various types of printing paper sheets one by one without causing a picking error or multi-feed and transport the same. SOLUTION: This paper separation guide 50 is provided on the side in the advancing direction of a printing paper sheet in a cassette body 10 of a paper feed cassette in contact with the printing paper sheets 1 stacked in the cassette body 10, and adapted to separate the paper sheets one by one. The coefficient of friction of a face where the printing paper sheet 1 comes into contact varies with the position where the stacked paper sheets 1 come into contact. The coefficient of friction of the paper sheet separation guide 50 varies with the position where the printing paper sheet 1 comes into contact linearly or by stages. The maximum value is set at the base of the paper feed cassette where the lowermost printing paper sheet 3 comes into contact, and the minimum value is set smaller than the force required for transporting the uppermost printing paper sheet 2 when the cassette body 10 is fully loaded with the printing paper sheets 1. COPYRIGHT: (C)2004,JPO