Title:
IMAGE FORMATION DEVICE
Document Type and Number:
Japanese Patent JP3368155
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent expansion/contraction of a transcription image and transcription slippage of a multiple image despite of a simple structure by providing a cooling means which cools a drive roller by generating an air flow from one shaft end part, to the other shaft end part of the drive roller having a hollow structure in the axial direction.
SOLUTION: A belt drive roller 32 is constituted of a metal core bar part 320 and a 5-6mm rubber layer 321 wound around its surface, and the core bar part, 320 has a hollow structure provided with a through hole 322 in its inside. An axial fan 325 is arranged in the adjacent to a shaft end part 324 so that air is flown from one shaft end 323 of the belt drive roller 32 into the through hole 322 and emitted to the other shaft end part 324 and so the air is made to act in the sucking direction. Namely, the air outside the device is flown into the through hole 322 of the belt drive roller 32 by the operation of the axial fan so that the temperature of the belt drive roller 32 can be held constant.
Inventors:
Kiyoshi Ohyama
Application Number:
JP22044596A
Publication Date:
January 20, 2003
Filing Date:
August 02, 1996
Export Citation:
Assignee:
Canon Inc
International Classes:
G03G21/20; G03G15/00; G03G15/16; (IPC1-7): G03G15/16; G03G15/00; G03G21/20
Domestic Patent References:
| JP8185110A | ||||
| JP341489A |
Attorney, Agent or Firm:
Akira Kurahashi