Image forming apparatus having a convenient sheet insertion function

An image forming apparatus comprising:

• a sheet insertion designation means to designate execution of a sheet insertion processing to insert an insertion sheet into a printed documents based on a plurality of pages of original documents;
• a scanner means to read a part of the plurality of pages of original document;
• an image data storage means to store a first image data by reading the part of the plurality of pages by the scanner means;
• a display means to request a user to identify a tray among a plurality of trays, the tray having the insertion sheet, after reading the part of the plurality of pages;
• and
• the display means to request the user to start to read the other part of the plurality of pages of original document after identifying the tray with the selection by the user;
• the scanner means to read the other part of the plurality of original document upon the reading request by the user;
• the image data storage means to store a second image data by reading the other part of the plurality of pages by the scanner means;
• and
• a print means to print out the first and second image data stored in the image data storage means, together With inserting the insertion sheet from the tray identified by the user between a first document printed based on the first image data and a second document printed based on the second image data.

A sheet insertion method of an insertion of a sheet into a printed document based on a plurality of pages of original documents comprising the steps:

• providing an image forming apparatus;
• reading a part of the plurality of pages of original document;
• storing a first image data by reading the part of the plurality of pages;
• identifying a tray among a plurality of trays, the tray having the insertion sheet;
• reading the other part of the plurality of pages of original document after identifying the tray;
• storing a second image data by reading the other part of the plurality of pages;
• printing a first document printed based on the first image data and a second document printed based on the second image data;
• and
• inserting the insertion sheet from the identified tray between the first document and the second document.