Patent ID: 8655243
Filing Date: 2014-02-18
Classification: G03G,Y10T

Abstract:
1. An image heating apparatus comprising: a heating rotatable member configured to heat an image on a recording material; a pressing rotatable member configured to contact said heating rotatable member to form a nip therebetween; a driving source; a driving gear provided on a shaft of said driving source; a first helical gear rotatable by the driving force supplied from said driving source; a second helical gear rotatable by the driving force supplied from said driving source, said second helical gear having a twisting direction which is different from that of said first helical gear; a first switching member configured to switch between rotation transmission and non-transmission states from said driving gear to said first helical gear; a second switching member configured to switch between rotation transmission and non-transmission states from said driving gear to said second helical gear; a third helical gear provided on said heating rotatable member in meshing engagement with said first helical gear; a fourth helical gear provided on said heating rotatable member in meshing engagement with said second helical gear; and switching means for switching at least between drive transmission by said first switching member and drive transmission by said second switching member to change a position of said heating rotatable member along a rotational axis direction of said heating rotatable member.