US Patent No. 9,389,554

IMAGE FORMING APPARATUS DISCRIMINATING WHETHER IMAGE HEATING DEVICE IS FOR HEATING AN ENVELOPE AND SYSTEM WITH DISPLAY PORTION CONFIGURED TO DISPLAY A DISPLAY PROMPTING AN OPERATOR TO MOUNT IMAGE HEATING DEVICE FOR AN ENVELOPE


Patent No. 9,389,554
Issue Date July 12, 2016
Title Image Forming Apparatus Discriminating Whether Image Heating Device Is For Heating An Envelope And System With Display Portion Configured To Display A Display Prompting An Operator To Mount Image Heating Device For An Envelope
Inventorship Kenichi Tanaka, Abiko (JP)
Taiya Hirayama, Moriya (JP)
Shutaro Saito, Kashiwa (JP)
Assignee Canon Kabushiki Kaisha, Tokyo (JP)

Claim of US Patent No. 9,389,554

1. An image forming system comprising:
an image forming device configured to form a toner image on a sheet;
a first image heating device configured to heat a toner image formed on the sheet by said image forming device;
a second image heating device configured to heat the toner image heated by said first image heating device;
a first feeding path configured to discharge the sheet introduced into said first image heating device without introducing
the sheet into said second image heating device;

a second feeding path configured to discharge the sheet after being introduced into said first image heating device and then
being introduced into said second image heating device;

a display portion configured to display a display for prompting an operator to mount an image heating device for an envelope
in place of said first image heating device when image formation on the envelope is effected; and

a controller configured to control sheet feeding so that the envelope as the recording material is introduced into said first
feeding path when the image formation on the envelope is effected.