Image forming apparatus

Abstract

The invention discloses an image forming apparatus. Printing paper (P1, P2) is cut by moving the lower one (52) of a pair of upper and lower cutting blades with the upper one (51) fixed. A protective member (53) for preventing the printed surface of the printing paper (P1, P2) being conveyed from coming into contact with the cutting edge of the upper cutting blade (51) is disposed upstream of the upper cutting blade (51) in the direction of paper conveyance. Therefore, being able to cut off the back-end blank portion of the last image of the images formed on papers and return to the cutting paper recycling box reliably, and being able to prevent the printing side from contacting with the upper side blades and damaging the printing side in paper transportion process.

Description

technical field [0001] The present invention relates to an image forming apparatus. Background technique [0002] Hitherto, in an image forming apparatus used in a photo printing system or the like, a paper storage room for storing long paper rolled in a roll shape is provided in the printer main body. The paper in the paper storage chamber is supplied to the printing unit. In the printing section, printing is performed on the paper supplied from the paper storage chamber by a print head of an inkjet type or the like. The printed paper is cut into a predetermined length by a paper cutter unit, and conveyed to a discharge position provided with a discharge tray or the like. Here, the pieces of the paper cut by the paper cutter unit are collected into the paper pieces collection box (see Japanese Laid-Open Patent Publication No. 2007-261038). [0003] In the Japanese Laid-Open Patent Publication No. 2007-261038, a paper cutter unit for cutting paper is disclosed, that is, t...

AI Technical Summary

Problems solved by technology

[0006] However, in the case where the trailing blank portion of the last image formed on the sheet or remains on the conveyance path, since there is no next sheet to be conveyed, the trailing blank portion is not pushed toward the cut paper scraps It is inappropriate for the return box to remain on the delivery path

Therefore, the trailing blank part of the last image must be discharged from the device without being cut by the paper cutter unit, and the worker must cut the trailing blank part by himself, so the work efficiency is very low

[0007] In addition, in the case of using a guillotine-type paper cutter as the paper cutting unit, if the paper is bent upward, the printing surface of the paper and the tip of the upper cutter will rub against each other during the paper conveying process, which may damage the printing surface. Concern

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