Image formation apparatus
AssigneeCanon Kabushiki Kaisha
InventorsMasanori Yamagata, Tomohide Katsumata, Seiji Yokoyama
Life of this patent
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Abstract
The image formation apparatus has a plurality of cooling fans inside the main body of the apparatus and comprises an error detecting function of detecting occurrence of an error such as a sheet jam, and switches between operation and non-operation of the cooling fans or changes a rotation number thereof in operation according to a form of a detected error. Thus, it allows optimization of in-apparatus the temperature in the apparatus control on error occurrence and temperature control of each inside portion of the apparatus on sheet jam occurrence so as to solve various problems relating to in the apparatus temperature status on the error occurrence.
Claims16
An image formation apparatus comprising:
- a plurality of cooling fans error detecting means for detecting occurrence of an error such as a sheet jam;
- detecting means for detecting a position of at least one residual sheet in a conveyance path in the case that a sheet conveyance error occurs in the apparatus;
- and
- control means for switching between an operation and non-operation of all the plurality of cooling fans or a specific cooling fan, or switching rotation number of all of said plurality of cooling fans or a specific cooling fan based on positional informational on the at least one residual sheet from said detection means.
An image forming apparatus comprising:
- a plurality of cooling fans;
- sheet jam detecting means for detecting an occurrence of a sheet jam and detecting a location of the sheet jam occurrence;
- means for detecting a sheet type for printing, and
- control means for changing a rotation number of a specific cooling fan of the plurality of cooling fans based on information on the location of the sheet jam occurrence and the sheet type.
An image formation apparatus comprising:
- a plurality of cooling fans error detecting means for detecting occurrence of an error such as a sheet jam;
- a sensor which detects a position of at least one residual sheet in a conveyance path in a case that a sheet conveyance error occurs in the apparatus;
- and
- a controller for switching between an operation and non-operation of all the plurality of cooling fans or a specific cooling fan, or switching rotation number of all of said plurality of cooling fans or said specific cooling fan based on position information on the at least one residual sheet from said sensor.
An image formation apparatus comprising:
- a plurality of cooling fans;
- a sheet jam detecting means which detects occurrence of a sheet jam and for detecting a location of of the sheet jam occurrence;
- a sheet type detecting sensor which detects a sheet type for printing;
- and
- a controller for changing a rotation number of a specific cooling fan of the plurality of cooling fans based on information on the location of the sheet jam occurrence and the sheet type.
Dependencies are inferred from the claim text.