| 摘要 |
PURPOSE:To prevent generation of scratches or abrasion of a photosensitive drum or trouble due to heat to continuous recording paper by driving the parking rollers of paired fixing rollers, transfer chargers and paper powder brushes with a cam driven to rotate with a single drive device so that such components are parked or returned to their home position at specified time interval. CONSTITUTION:If a shaft 11 rotates due to the rotation of a paper handling motor 10, the backup rollers 81B of paired fixing rollers 81 which are actuated and driven with a cam 83 starts moving upward from a parking position. If the rotary angle of a shaft 11 is at 235 deg., paper powder brushes 40, a transfer section 7 and a fixing section 8 which are driven with the cam 83 and another cam 13 are ready for operation and continue in this condition until the rotary angle reaches 265 deg.. As soon as the rotary angle of the shaft 11 is at 250 deg., the exposure start position on the surface of a photosensitive drum 1 reaches the transfer section 7 through a development section 6, fanhold paper 20 is fed and data is printed. A motor 10 stops during this printing process. When the printing ends, each section is parked in reverse order due to the rotation of the shaft 11. |
