Image forming apparatus

Patent metadata

Field	Value
Publication number	US-9400462-B2
Application number	US-201615006305-A
Country	US
Kind code	B2
Filing date	Jan 26, 2016
Priority date	Feb 18, 2013
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

An image forming apparatus has an image forming portion, a fixing portion for fixing the unfixed image at a fixing nip, a first and second guide members configured to guide the recording material to the fixing nip. The first guide member is provided at a position opposed to a surface of the recording material on which the unfixed image is formed and at a center of the fixing portion with respect to a longitudinal direction of the fixing portion, and the second guide member is provided at a position opposed to the surface of the recording material on which the unfixed image is formed and at an end of the fixing portion with respect to the longitudinal direction of the fixing portion, the second guide member being movable relative to the first guide member with respect to a direction perpendicular to a feeding direction of the recoding material.

First claim

What is claimed is:

1. An image forming apparatus comprising:
an image forming portion for forming an unfixed image on a recording material;
a fixing portion for fixing the unfixed image, formed on the recording material, onto the recording material at a fixing nip;
a first guide member configured to guide the recording material to the fixing nip, said first guide member provided at a position opposed to a surface of the recording material on which the unfixed image is formed and at a center of said fixing portion with respect to a longitudinal direction of said fixing portion;
a second guide member configured to guide the recording material to the fixing nip, said second guide member provided at a position opposed to the surface of the recording material on which the unfixed image is formed and at an end of said fixing portion with respect to the longitudinal direction of said fixing portion,
wherein said second guide member is movable relative to said first guide member with respect to a direction perpendicular to a feeding direction of the recoding material.

2. An image forming apparatus according to claim 1 , wherein said second guide member has a guide surface contactable with the recording material that is inclined as seen from an upstream side of the feeding direction of the recoding material.

3. An image forming apparatus according to claim 2 , wherein said second guide member is provided rotatably about an inside end portion thereof relative to the longitudinal direction of said fixing portion.

4. An image forming apparatus according to claim 1 , wherein said first guide member is movable between a first position and a second position relative to the direction perpendicular to the feeding direction of the recoding material.

5. An image forming apparatus according to claim 4 , wherein said first guide member is movable between the first position where an entrance to the fixing nip is opened and the second position where the entrance to the fixing nip is blocked.

6. An image forming apparatus according to claim 4 , wherein said second guide member moves together with said first guide member when said first guide member moves.

7. An image forming apparatus according to claim 4 , further comprising a door configured for access by a user, wherein said first guide member moves between the first position and the second position in accordance with a movement of said door.

8. An image forming apparatus comprising:
an image forming portion for forming an unfixed image on a recording material;
a fixing portion for fixing the unfixed image, formed on the recording material, onto the recording material at a fixing nip;
a first guide member configured to guide the recording material to the fixing nip; and
a second guide member configured to guide the recording material to the fixing nip, said second guide member supported by said first guide member and provided at an end of said first guide member relative to a longitudinal direction of said fixing portion,
wherein said second guide member is movable about said first guide member with respect to a direction perpendicular to a feeding direction of the recoding material.

9. An image forming apparatus according to claim 8 , wherein said second guide member has a guide surface contactable with the recording material that is inclined as seen from an upstream side of the feeding direction of the recording material.

10. An image forming apparatus according to claim 9 , wherein said second guide member is provided rotatably about an inside end portion thereof relative to the longitudinal direction of said fixing portion.

11. An image forming apparatus according to claim 8 , wherein said first guide member is movable between a first position and a second position relative to the direction perpendicular to the feeding direction of the recoding material.

12. An image forming apparatus according to claim 11 , wherein said first guide member is movable between the first position where an entrance to the fixing nip is opened and the second position where the entrance to the fixing nip is blocked.

13. An image forming apparatus according to claim 11 , wherein said second guide member moves together with said first guide member when said first guide member moves.

14. An image forming apparatus according to claim 11 , further comprising a door configured for access by a user, wherein said first guide member moves between the first position and the second position in accordance with a movement of said door.

Assignees

• Canon Kk

Inventors

• Koyama Tomooku
• Murooka Ken
• Uchida Wataru
• Agata Jun
• Suzuki Yohei
• Takamura Daisuke

Classifications

• G03G15/2028 Primary

  with means for handling the copy material in the fixing nip, e.g. introduction guides, stripping means · CPC title