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18results about "Printing processes" patented technology
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Image forming roll, charging roll, method for inspecting image forming roll, and method for inspecting charging roll
PendingEP4390551A4reduce adhesionShaftsElectrographic process apparatusImage formationStructural engineering
A charge roller includes a base and a surface layer formed on an outer peripheral surface of the base, with a contact angle between the surface layer and toluene being 6° or more, and a contact angle between the surface layer and tetradecane being 22° or more.
Owner:SYNZTEC
Conductive member for electrophotographic devices
Provided is a conductive member for electrophotographic devices in which adhesion of toner and paper dust is minimized. This conductive member 10 for electrophotographic devices comprises an elastic layer 14 and a surface layer 14 formed on the outer peripheral surface of the elastic layer 14. A plurality of protrusions 18 are formed on the outer peripheral surface of the surface layer 16, the tips of the protrusions 18 are configured as curved surfaces, the height h of the protrusions 18 is 1.0-10 nm inclusive, the width W of the protrusions 18 is 1.0-100 nm inclusive, and the width W of the protrusions 18 relative to the distance d between protrusions 18 is 0.5-1.5 inclusive.
Owner:SUMITOMO RIKO CO LTD
Conductive member for electrophotographic devices
Provided is a conductive member for electrophotographic devices in which adhesion of toner and paper dust is minimized. This conductive member 10 for electrophotographic devices comprises an elastic layer 14 and a surface layer 14 formed on the outer peripheral surface of the elastic layer 14. A plurality of protrusions 18 are formed on the outer peripheral surface of the surface layer 16, the tips of the protrusions 18 are configured as curved surfaces, the height h of the protrusions 18 is 1.0-10 nm inclusive, the width W of the protrusions 18 is 1.0-100 nm inclusive, and the width W of the protrusions 18 relative to the distance d between protrusions 18 is 0.5-1.5 inclusive.
Owner:SUMITOMO RIKO CO LTD
Sheet transport device and image forming apparatus
Owner:CANON KK
Roller device
ActiveCN114930038BRoll force/gap control deviceMetal rolling stand detailsTension stressMechanical engineering
Owner:MATTHEWS INTERNATIONAL CORP
Roller device
Owner:MATTHEWS INTERNATIONAL CORP
Drive Device for an Eccentric Bearing, and Corresponding Calender
The invention relates to a drive device for an eccentric bearing for radially deflecting a roller mounted therein, the eccentric bearing comprising a bore which is oriented in an axial direction and intended for accommodating a roller journal of a roller, and the eccentric bearing comprising an outer eccentric bushing and an inner eccentric bushing which is partially inserted into the outer eccentric bushing and has the bore, such that the eccentric bushings have an axial overlap region, characterized in that at least one of the eccentric bushings has a free end outside the overlap region, which free end is coupled to a drive unit via which the at least one eccentric bushing is rotatable about the axial direction in order to adjust a radial axial deflection of the bore with respect to the other eccentric bushing. The invention also relates to a corresponding calender.
Owner:MATTHEWS INTERNATIONAL GMBH +1
Conductive materials for electrophotographic equipment
Provided is a conductive member for electrophotographic devices in which adhesion of toner and paper dust is minimized. This conductive member 10 for electrophotographic devices comprises an elastic layer 14 and a surface layer 14 formed on the outer peripheral surface of the elastic layer 14. A plurality of protrusions 18 are formed on the outer peripheral surface of the surface layer 16, the tips of the protrusions 18 are configured as curved surfaces, the height h of the protrusions 18 is 1.0-10 nm inclusive, the width W of the protrusions 18 is 1.0-100 nm inclusive, and the width W of the protrusions 18 relative to the distance d between protrusions 18 is 0.5-1.5 inclusive.
Owner:SUMITOMO RIKO CO LTD
Drive device for an eccentric bearing, and corresponding calender
The invention relates to a drive device for an eccentric bearing for radially deflecting a roller mounted therein, the eccentric bearing comprising a bore which is oriented in an axial direction and intended for accommodating a roller journal of a roller, and the eccentric bearing comprising an outer eccentric bushing and an inner eccentric bushing which is partially inserted into the outer eccentric bushing and has the bore, such that the eccentric bushings have an axial overlap region, characterized in that at least one of the eccentric bushings has a free end outside the overlap region, which free end is coupled to a drive unit via which the at least one eccentric bushing is rotatable about the axial direction in order to adjust a radial axial deflection of the bore with respect to the other eccentric bushing. The invention also relates to a corresponding calender.
Owner:MATTHEWS INTERNATIONAL GMBH +1
Image-forming roller, charge roller, method for inspecting image-forming roller, and method for inspecting charge roller
A charge roller includes a base and a surface layer formed on an outer peripheral surface of the base, with a contact angle between the surface layer and toluene being 6° or more, and a contact angle between the surface layer and tetradecane being 22° or more.
Owner:SYNZTEC
Sending mail
This invention provides a paper feed roller that can suppress poor paper feeding over a long period of time. The paper feed roller 10 includes a shaft 12 and an elastomer layer 14 formed on the outer peripheral surface of the shaft 12. The portion having the elastomer layer 14 has a first outer diameter portion 10a with an outer diameter one size smaller and a second outer diameter portion 10b with an outer diameter larger than the first outer diameter portion 10a. An inclined portion 10c is provided between the first outer diameter portion 10a and the second outer diameter portion 10b to connect the first outer diameter portion 10a and the second outer diameter portion 10b, so that the outer diameter changes in the axial direction. The inclined portion 10c accounts for more than 3% and less than 80% of the portion having the elastomer layer 14. The difference in outer diameter between the first outer diameter portion 10a and the second outer diameter portion 10b is more than 50 μm and less than 1000 μm. A plurality of protrusions 14a forming surface irregularities are formed on the outer peripheral surface of the elastomer layer 14. The surface roughness Rz in the first outer diameter portion 10a is more than 50% and less than 200% of the height difference between the first outer diameter portion 10a and the second outer diameter portion 10b.
Owner:SUMITOMO RIKO CO LTD
Sheet conveying device and image forming apparatus
A sheet conveying device includes a frame; a conveying roller unit that includes a rotation shaft that is rotatable, a roller that contacts a sheet, and a bearing that is electrically conductive and that rotatably supports the rotation shaft; and a bearing holder that, by being attached to the bearing, fixes the conveying roller unit to the frame. In the sheet conveying device, the bearing holder includes a first member that is made of an electrically nonconductive resin and a second member that is made of an electrically conductive resin, and the second member contacts the bearing and the frame.
Owner:CANON KK
Sheet conveying device and image forming apparatus
The invention discloses a sheet conveying device and an image forming apparatus. The sheet conveying device includes a frame; a transfer roller unit including a rotatable rotating shaft, a roller contacting the sheet, and a bearing electrically conductive and rotatably supporting the rotating shaft; and a bearing block which fixes the transfer roller unit to the frame by being attached to the bearing. In a sheet conveying device, a bearing seat includes a first member made of a non-conductive resin and a second member made of a conductive resin, and the second member contacts a bearing and a frame.
Owner:CANON KK
Roller device
Owner:MATTHEWS INTERNATIONAL CORP
Roller device
Owner:MATTHEWS INTERNATIONAL CORP
Device for producing a releasable clearance-free position of a rolling bearing and a corresponding method
Owner:MATTHEWS INTERNATIONAL CORP
Electrophotographic member, method for manufacturing the same, process cartridge, and electrophotographic image forming apparatus
An electrophotographic member including a core shaft and an elastic layer on an outer circumference of the core shaft, the elastic layer containing a polyurethane elastomer, the polyurethane elastomer containing a matrix and domains dispersed in the matrix, a parameter A and a parameter B satisfying a relationship of A < B, wherein the parameter A represents a viscoelastic term of each of the domains and the parameter B represents a viscoelastic term of the matrix. The micro rubber hardness of the elastic layer at a temperature of 23°C is 20 or more and 50 or less, and in an indentation test of the elastic layer at 23°C using a nanoindenter, wherein the test includes pressing into the elastic layer with a Vickers indenter at a loading rate of 10 mN / 30 sec, holding at a load of 10 mN for 60 seconds, and then unloading, the strain after unloading for 5 seconds is 1 µm or less.
Owner:CANON KK
Roller arrangement
Owner:MATTHEWS INTERNATIONAL GMBH