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US 5,552,859 AGranted
Sheet supplying apparatus with means for rocking sheet stacking plate
AssigneeCanon Kabushiki Kaisha
InventorsTomohito Nakagawa, Masakazu Hiroi, Kazuhiro Matsuo, Hideki Orii, Satoru Kato, Akihito Dobashi, Mamoru Noda
Life of this patent
Estimating the term…
Abstract
A sheet supplying apparatus has a sheet stacking plate on which sheets are stacked, a drive unit for vibrating the sheet stacking plate upwardly and downwardly, and a sheet supply mechanism for supplying the sheet from the sheet stacking plate. A sheet supplying condition detecting device detects poor supply of a sheet bundle, and the drive unit is operated on the basis of a detection signal of the sheet supplying condition detecting device so that clogging of the sheets, poor sheet separation and poor sheet supply can be prevented.
Claims33
A sheet supplying apparatus comprising:
- a sheet stacking plate on which sheets are stacked;
- drive means for vibrating said sheet stacking plate upwardly and downwardly;
- sheet supply means for supplying the sheet from said sheet stacking plate to a predetermined position;
- and
- sheet supplying condition detecting means for detecting a poor supply of a sheet bundle, wherein said drive means is operated on the basis of a detection signal of said sheet supplying condition detecting means.
2 more elements
A sheet supplying apparatus comprising:
- a sheet stacking plate on which sheets are stacked;
- drive means for vibrating said sheet stacking plate upwardly and downwardly;
- and
- sheet supply means for supplying the sheet from said sheet stacking plate;
- wherein said drive means is operated when a predetermined time period is elapsed after a sheet supplying operation is started.
2 more elements
A sheet supplying apparatus comprising:
- a sheet stacking plate on which sheets are stacked, said sheet stacking plate being divided into an upstream portion and a downstream portion so that the upstream portion can be rocked to bend a bundle of sheets between said upstream and downstream portions;
- drive means for rocking said sheet stacking plate upwardly and downwardly;
- sheet supply means for supplying the sheet from said sheet stacking plate to a predetermined position;
- and
- sheet supplying condition detecting means for detecting poor supply of a sheet bundle, said drive means being operated on the basis of a detection signal of said sheet supplying condition detecting means.
2 more elements
A sheet supplying apparatus, comprising:
- a sheet stacking plate on which sheets are stacked, said sheet stacking plate being divided into an upstream portion and a downstream portion so that said upstream portion can be rocked to bend a bundle of sheets between said upstream and downstream portion;
- drive means for rocking said sheet stacking plate upwardly and downwardly;
- and
- sheet supply means for supplying the sheet from said sheet stacking plate;
- wherein said drive means is operated when a predetermined time period is elapsed after a sheet supplying operation is started.
2 more elements
An image forming apparatus comprising:
- a sheet stacking plate on which original sheets are stacked;
- drive means for vibrating said sheet stacking plate upwardly and downwardly;
- sheet supply means for supplying the original sheet from said sheet stacking plate to a predetermined position;
- sheet supplying condition detecting means for detecting a poor supply of an original sheet bundle, wherein said drive means is operated on the basis of a detection signal of said sheet supplying condition detecting means;
- and
- an image forming unit for forming an image on a copy sheet whenever the original sheet is sent to the predetermined position by said sheet supply means.
3 more elements
An image forming apparatus comprising:
- a sheet stacking plate on which original sheets are stacked;
- drive means for vibrating said sheet stacking plate upwardly and downwardly;
- sheet supply means for supplying the original sheet from said sheet stacking plate to a predetermined position,
- wherein said drive means is operated when a predetermined time period is elapsed after an original sheet supplying operation is started;
- and
- an image forming unit for forming an image on a copy sheet whenever the original sheet is sent to a predetermined position on the platen by said sheet supply means.
3 more elements
An image forming apparatus, comprising:
- a sheet stacking plate on which original sheets are stacked, said sheet stacking plate being divided into an upstream portion and a downstream portion so that said upstream portion can be rocked to bend a bundle of sheets between said upstream and downstream portions;
- drive means for rocking said sheet stacking plate upwardly and downwardly;
- sheet supply means for supplying the original sheet from said sheet stacking plate to a predetermined position;
- sheet supplying condition detecting means for detecting a poor supply of an original sheet bundle, wherein said drive means is operated on the basis of a detection signal of said sheet supplying condition detecting means;
- and
- an image forming unit for forming an image on a copy sheet whenever the original sheet is sent to the predetermined position by said sheet supply means.
3 more elements
An image forming apparatus comprising:
- a sheet stacking plate on which original sheets are stacked, said sheet stacking plate being divided into an upstream portion and a downstream portion so that said upstream portion can be rocked to bend a bundle of sheets between said upstream and downstream portions;
- drive means for rocking said sheet stacking plate upwardly and downwardly;
- sheet supply means for supplying the original sheet from said sheet stacking plate to a predetermined position,
- wherein said drive means is operated when a predetermined time period is elapsed after an original sheet supplying operation is started;
- and
- an image forming unit for forming an image on a copy sheet whenever the original sheet is sent to a predetermined position on the platen by said sheet supply means.
3 more elements
Dependencies are inferred from the claim text.