Patent ID: 9291976
Filing Date: 2016-03-22
CPC Classification: B65H,G03G

Claim Text:
1. An image forming system comprising: an option apparatus having a first conveying path; and an image forming apparatus configured to be connected to the option apparatus and having a second conveying path configured to be connected to the first conveying path of the option apparatus when the image forming apparatus is connected to the option apparatus, wherein the image forming apparatus includes: a sensor configured to detect a recording material conveyed on the second conveying path at a first speed; and a first controller configured to notify the option apparatus of a detection timing of the recording material by the sensor, and, if the detection timing is different from a predetermined timing, to determine a second speed based on the detection timing and the predetermined timing and change the conveying speed of the recording material on the second conveying path from the first speed to the second speed, and a second controller configured to determine whether the detection timing is different from the predetermined timing upon receiving a notification of the detection timing from the image forming apparatus, and, if the detection timing is different from the predetermined timing, to determine the second speed based on the detection timing and the predetermined timing and change the conveying speed of the recording material on the first conveying path from the first speed to the second speed.