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US 5,062,622 AGranted
Vibratory sheet feeder which uses phase adjustment to control the sheet feeding speed
AssigneeCanon Kabushiki Kaisha
InventorsKenichi Kataoka, Yoshifumi Nishimoto, Masahiko Igaki
Life of this patent
Estimating the term…
Abstract
There is disclosed a sheet feeding device having a vibration member for generating vibration for feeding a sheet member. The vibration member is in frictional engagement with the sheet member, which is fed by vibration generated in the vibration member. The device further has a member for controlling the amplitude of the vibration of the vibration member according to the feeding speed of the sheet member whereby the sheet can be fed with a desired speed.
Claims17
A sheet feeding device comprising:
- a vibration member for generating vibration for feeding a sheet member, said vibration member having first and second vibration elements provided in positions for pinching said sheet member;
- means for controlling the amplitude of vibration of said vibration member, in response to a change in the feeding speed of said sheet member;
- and
- means for varying the phase difference between the vibration generated in the first vibration element and that in the second vibration element in accordance with the change in the feeding speed of the sheet member.
1 more element
A sheet feeding device comprising:
- (a) a vibration member for generating vibration for feeding a sheet member, said vibration member having first and second vibration elements provided in positions for pinching said sheet member;
- and
- (b) means for varying the phase difference between the vibration generated in the first vibration element and that in the second vibration element in accordance with a change in the feeding speed of said sheet member.
A sheet feeding device comprising:
- (a) a vibration member for generating a travelling vibration wave to feed a sheet member, said vibration member having first and second vibration elements provided in positions for pinching said sheet member;
- and
- (b) means for varying the phase difference between the vibration wave generated in the first vibration element and that in the second vibration element in accordance with a change in the feeding speed of said sheet member.
Dependencies are inferred from the claim text.