Sheet separating device
AssigneesMinolta Co., Ltd., Toyama Machineries Co., Ltd.
InventorsNaoki Mizuno, Toshio Sakata, Toshio Toyama
Life of this patent
Estimating the term…
Abstract
A separating pawl is attached to a fixed portion around a rotatable member, and a separating end of the separating pawl extends from a fixed end of the separating pawl onto a circumferential surface of the rotatable member. A portion between the separating end and the fixed end of the separating pawl forms a convex arch in the same direction as that of the rotatable member. A pressing plate is attached to the fixed portion around the rotatable member, and is brought in contact with the convex side of the separating pawl so that the separating end of the separating pawl comes in contact with the rotatable member to press the separating pawl for performing a sheet separating operation.
Claims25
A separating device for separating a sheet-like member from a surface of a rotatable member in an image forming apparatus, said device comprising a separating pawl having a separating tip in engaging contact with the surface of the rotatable member and a base end rigidly connected with a body of the separating device, said separating pawl being made up of a flexible, elastic material and having a preformed convex shape positioned facing in the same direction as that of a circumferential surface of the rotatable member.
A separating device for separating a sheet from a circumferential surface of a rotatable member, comprising:
- a base;
- a flexible elastic plate rigidly connected to said base and having a leading end facing a rotatable member, and being convexly preformed in a same direction as that of a circumferential surface of the rotatable member;
- and
- a pressing arm having a base end connected to the base, and a leading end of the pressing arm being in contact with a convex side of the flexible elastic plate, and being positioned so as to cause a leading tip of the flexible plate to be in contact with the rotatable member.
A separating device for separating a sheet from a circumferential surface of a rotatable member, comprising:
- a base frame;
- and
- an elastic plate having a length in a direction of width of a rotatable member and forming a plurality of pawls extruded toward the rotatable member with a predetermined space, each one of the pawls being deformed convexly in the same direction as that of a circumferential surface of the rotatable member.
A separating device for separating a sheet from a surface of a rotatable member, comprising:
- a base;
- a flexible, elastic plate rigidly connected to said base and having a leading end of the elastic plate facing the rotatable member, the leading end being convexly preformed in a same direction as that of the surface of the rotatable member;
- and
- a pressing arm having a base end connected to the base, and a leading end of the pressing arm being in contact with a convex side of the elastic plate, and being positioned so as to cause a leading tip of the elastic plate to be in contact with the surface of the rotatable member;
- said pressing arm extending substantially perpendicular to the surface of the rotatable member, and said arm includes a guide edge for guiding sheets that are separated from the rotatable member.
A separating device for separating a sheet-like member from a surface of a rotatable member in an image forming apparatus, said device comprising a separating pawl having a separating tip in engaging contact with the surface of the rotatable member and a base end connected with a body of the separating device, said separating pawl being made up of a flexible, metallic elastic plate and having a preformed convex shape positioned facing in the same direction as that of a circumferential surface of the rotatable member.
A separating device for separating a sheet-like member from a surface of a rotatable member in an image forming apparatus, said device comprising a separating pawl having a separating tip in engaging contact with the surface of the rotatable member and a base end connected with a body of the separating device, said separating pawl being made up of a flexible, elastic plate and having a preformed convex shape positioned facing in the same direction as that of a circumferential surface of the rotatable member so that the separating pawl is deformed along the circumferential surface of the rotatable member naturally sliding on the circumferential surface of the rotatable member.
A sheet separating device, comprising:
- a base;
- a flexible plate having a first end fixed to said base and a free second end arranged in engaging contact with a surface of a rotatable drum;
- and
- a rigid pressing arm having a first end arranged adjacent the free second end of the plate so as to form a gap between the rotatable drum and the pressing arm, said gap being sufficiently narrow so that the free second end of the flexible plate can only move in a direction tangential to the surface of the rotatable drum, said rigid pressing arm being secured to the base so as to prevent movement of the pressing arm during movement of the flexible plate.
Dependencies are inferred from the claim text.