Image forming apparatus and rotation control method for motor driving rotation of timing rollers

US8995901B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8995901-B2
Application numberUS-201213645246-A
CountryUS
Kind codeB2
Filing dateOct 4, 2012
Priority dateOct 6, 2011
Publication dateMar 31, 2015
Grant dateMar 31, 2015

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  2. Abstract

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  5. First independent claim

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Abstract

Official abstract text for this publication.

An image forming apparatus having a transport device including a pair of timing rollers, operable to cause a leading edge of a recording sheet to abut a nip portion of the non-rotating timing rollers, and then initiate rotation to transport the sheet toward a transfer position, the transport device comprising: a motor transmitting rotational force to the timing rollers via a power transmission mechanism such that the timing rollers rotate; and a control unit controlling motor rotation, wherein the control unit activates the motor, causes the timing rollers to transport a first recording sheet at a first speed, and stops the motor once transportation is complete, and when a second recording sheet is to be subsequently transported at a different second speed, the control unit causes the timing rollers to execute an idle rotation at the second speed or at another speed, and then stopping, before beginning second sheet transportation.

First claim

Opening claim text (preview).

What is claimed is: 1. An image forming apparatus having a transport device including a pair of timing rollers, operable to cause a leading edge of a recording sheet to abut a nip portion of the pair of timing rollers, which are not rotating, and to initiate rotation so as to transport the recording sheet toward a toner image transfer position, the transport device comprising: a motor transmitting rotational force to the pair of timing rollers via a power transmission mechanism…

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What does patent US8995901B2 cover?
An image forming apparatus having a transport device including a pair of timing rollers, operable to cause a leading edge of a recording sheet to abut a nip portion of the non-rotating timing rollers, and then initiate rotation to transport the sheet toward a transfer position, the transport device comprising: a motor transmitting rotational force to the timing rollers via a power transmission …
Who is the assignee on this patent?
Konica Minolta Inc
What technology area does this patent fall under?
Primary CPC classification G03G15/0189. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).