Image forming apparatus and sheet stacking system
US6408147B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Aug 29, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2511/15
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An image forming apparatus includes an image forming part for forming an image on a sheet, a sheet discharging part for discharging a sheet having an image formed thereon by the image forming part, a sheet stacking tray for stacking thereon sheets discharged from the sheet discharging part, a first stack height detecting sensor for detecting whether a height of stack of sheets stacked on the sheet stacking tray has reached a first height, a second stack height detecting sensor In for detecting whether the height of stack of sheets stacked on the sheet stacking tray has reached a second height which is higher than the first height, and a control part for controlling the image forming apparatus by judging a state of stack of sheets on the sheet stacking tray on the basis of results of detection provided by the first stack height detecting sensor and the second stack height detecting sensor, wherein the control part judges the sheet stacking tray to be in a maximum stacked state when the second stack height detecting sensor has detected that the height of stack of sheets stacked on the sheet stacking tray has reached the second height and, after that, continues judging the sheet stack…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.