Control method for sheet member conveying apparatus and control method for recording apparatus
US6599043B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2001 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Oct 25, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2557/242
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
In a sheet member conveying apparatus having a roller for conveying a sheet member, a motor for driving the roller, a driving transmitter for transmitting a driving force of the motor to the roller, and a detector for detecting position and speed of the roller, control is executed by a step of detecting a periodic speed or torque change of the roller as a period profile, a step of judging a specific phase angle in the period profile as an origin, a step of correlating an offset phase angle having a specific offset from the origin with an optimal suspension phase angle on the period profile, which is a phase angle to suspend the roller, and a step of controlling the suspension phase angle on the period profile at which the roller is suspended to become optimal, thereby suppressing an influence by torque and speed changes of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.