Method for manufacturing toner supply roller

Patent metadata

Field	Value
Publication number	US-9645523-B2
Application number	US-201314403257-A
Country	US
Kind code	B2
Filing date	May 27, 2013
Priority date	May 29, 2012
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

Provided is a technique for manufacturing a toner supply roller in which the toner conveying performance and the scraping performance of unneeded toner are excellent as well as the above-mentioned problems in molding can be resolved. Also provided is a method for manufacturing a toner supply roller including: an insertion process in which a roller member 10 comprising a shaft 11 and an elastic layer 12 composed of a foam having a columnar shape supported on the outer periphery of the shaft is inserted into a cylindrical forming tool m having on the inner peripheral surface irregular concaves and convexes or a recessed groove along the longitudinal direction; a transfer process in which the roller member inserted into the cylindrical forming tool is heated and the irregular concaves and convexes or the recessed groove along the longitudinal direction on the inner peripheral surface of the cylindrical forming tool are transferred on the surface of the roller member; and a releasing process in which the roller member on the surface of which the irregular concaves and convexes or the recessed groove along the longitudinal direction are transferred is taken out from the cylindrical forming tool to obtain a roller.

First claim

The invention claimed is:

1. A method for manufacturing a toner supply roller characterized by comprising:
an insertion process in which a roller member comprising a shaft and an elastic layer composed of a foam having a columnar shape supported on the outer periphery of the shaft is inserted into a cylindrical forming tool having on the inner peripheral surface irregular concaves and convexes or a recessed groove along the longitudinal direction, wherein the roller member after insertion is moved in a direction opposite to the insertion direction;
a transfer process in which the roller member inserted into the cylindrical forming tool is heated and the irregular concaves and convexes or the recessed groove along the longitudinal direction on the inner peripheral surface of the cylindrical forming tool are transferred on the surface of the roller member; and
a releasing process in which the roller member on the surface of which the irregular concaves and convexes or the recessed groove along the longitudinal direction are transferred is taken out from the cylindrical forming tool to obtain a roller.

2. The method for manufacturing a toner supply roller according to claim 1 , wherein the foam is a polyurethane foam.

3. The method for manufacturing a toner supply roller according to claim 1 , wherein the elastic layer having a columnar shape is obtained by cutting out from a block foam.

4. The method for manufacturing a toner supply roller according to claim 3 , wherein the elastic layer having a columnar shape is cut out from the block foam such that the axial direction of the columnar shape is in parallel to the foaming direction of the block foam.

Assignees

• Bridgestone Corp

Inventors

• Masuyama Toru

Classifications

• B29L2031/324

  Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing · CPC title

• G03G15/0808 Primary

  characterised by the developer supplying means, e.g. structure of developer supply roller · CPC title

• B29L2031/767

  Printing equipment or accessories therefor · CPC title

• B29K2995/0063

  Density · CPC title

• B29K2075/00

  Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material · CPC title