Image forming apparatus acquiring a duration of overcharge
US9753395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2016 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Jul 28, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/203
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes an acquiring portion that acquires a duration of an overcharged state occurring in an area of an image bearing body charged by a charging member after the image bearing body is exposed by a preliminary exposing portion. Adjustment is made to an interval between a first timing when the preliminary exposing portion starts exposing the image bearing body before execution of an adjustment operation for setting a transfer voltage value and a second timing when a voltage applying portion starts, during the subsequent adjustment operation, applying a voltage with an adjustment voltage value to a transfer member such that the second timing is later than a third timing when the duration acquired by the acquiring portion ends.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.