Method and apparatus for image forming capable of effectively collating a stack of single/double-sided recording sheets in a desired ejection tray

Abstract

An image transfer apparatus includes a first transfer mechanism configured to transfer an image onto a first surface of a recording sheet. The image transfer apparatus also includes a second transfer mechanism configured to transfer an image onto a second surface of the recording sheet, and a controller configured to select one of a first case, in which the first transfer mechanism transfers a first original image onto the first surface of the recording sheet, or a second case, in which the second transfer mechanism transfers the first original image onto the second surface of the recording sheet.

1 . An image-transfer apparatus, comprising: 
 a first transfer mechanism configured to transfer an image onto a first surface of a recording sheet;    a second transfer mechanism configured to transfer an image onto a second surface of the recording sheet; and    a controller configured to select one of: 
 a first case, in which the first transfer mechanism transfers a first original image onto the first surface of the recording sheet, or  
 a second case, in which the second transfer mechanism transfers the first original image onto the second surface of the recording sheet.  
   
   
   
       2 . The image transfer apparatus of  claim 1 , wherein the controller is further configured to select one of: 
 a third case, in which the first transfer mechanism transfers the first original image onto the first surface of the recording sheet, and the second transfer mechanism transfers a second original image onto the second surface of the recording sheet, or    a fourth case, in which the first transfer mechanism transfers the second original image onto the first surface of the recording sheet, and the second transfer mechanism transfers the first original image onto the second surface of the recording sheet.    
   
   
       3 . An image forming apparatus, comprising: 
 a first transfer mechanism configured to transfer an image onto a first surface of a recording sheet;    a second transfer mechanism configured to transfer an image onto a second surface of the recording sheet; and    a controller configured to select one of: 
 a first case, in which the first transfer mechanism transfers a first original image onto the first surface of the recording sheet, or  
 a second case, in which the second transfer mechanism transfers the first original image onto the second surface of the recording sheet.  
   
   
   
       4 . The image forming apparatus of  claim 3 , further comprising: 
 a first sheet ejecting mechanism configured to eject the recording sheet with the first surface oriented upward; and    a second sheet ejecting mechanism configured to eject the recording sheet with the second surface oriented upward,    wherein the controller is further configured to select one of: 
 the first case in which the first transfer mechanism transfers the first original image onto the first surface of the recording sheet, or  
 the second case in which the second transfer mechanism transfers the first original image onto the second surface of the recording sheet,  
 in accordance with a condition as to which one of the first and second sheet ejecting mechanisms is used to eject a recording sheet.  
   
   
   
       5 . The image forming apparatus of  claim 4 , wherein the controller is further configured to select one of: 
 a third case, in which the first transfer mechanism transfers the first original image onto the first surface of the recording sheet, and the second transfer mechanism transfers a second original image onto the second surface of the recording sheet, or    a fourth case, in which the first transfer mechanism transfers the second original image onto the first surface of the recording sheet, and the second transfer mechanism transfers the first original image onto the second surface of the recording sheet.    
   
   
       6 . A method of transferring an image onto a recording sheet comprising: 
 selecting one of a first output tray and a second output tray;    when the first output tray is selected, transferring an original image onto a first surface of a recording sheet via a first transfer mechanism; and    when the second output tray is selected, transferring the original image onto a second surface of the recording sheet via a second transfer mechanism.    
   
   
       7 . A method of forming an image on a recording sheet comprising: 
 selecting one of a first output tray and a second output tray;    when the first output tray is selected, transferring an original image onto a first surface of a recording sheet via a first transfer mechanism; and    when the second output tray is selected, transferring the original image onto a second surface of the recording sheet via a second transfer mechanism.