Paper guide device for compact printer

Abstract

A paper guide device for a compact printer which can be varied in its guide width by a simple operation and can accommodate papers having different widths, is disclosed. The device includes: a lower guide frame mounted on the compact printer; an upper guide frame coupled to a front surface of the lower guide frame with a gap therebetween to allow a paper to pass therethrough, which is provided at its rear surface with a pair of guide pieces having a spacing corresponding a width of a first type of paper to guide the first type of paper; and an auxiliary guider detachably fitted between the lower and upper guide frames such that the auxiliary guider is positioned at a location spaced from either of the pair of guide pieces by a distance corresponding to a width of a second type of paper, thereby guiding the second type of paper in conjunction with either guide piece of the guide pieces.

What is claimed is:  
     
         1 . A paper guide device for a compact printer, comprising: 
 a lower guide frame mounted on the compact printer;    an upper guide frame coupled to a front surface of the lower guide frame with a gap existing therebetween to allow a paper to pass therethrough, and which is provided at its rear surface with a pair of guide pieces having a spacing corresponding to a width of a first type of paper to guide the first type of paper; and    an auxiliary guider detachably fitted between the lower and upper guide frames such that the auxiliary guider is positioned at a location spaced from either of the pair of guide pieces by a distance corresponding to a width of a second type of paper, thereby guiding the second type of paper in conjunction with either guide piece of the guide pieces.    
     
     
         2 . The paper guide device as set forth in  claim 1 , in which the lower guide frame is provided at its front surface with a pair of fitting grooves into which the pair of guide pieces are partially fitted, and is provided with a vertical retaining hole at a position between the pair of fitting grooves, the upper guide frame being provided with a pair of holding protrusions defining a holding groove therebetween at a position of its upper end corresponding to the retaining hole, the auxiliary guider including a slider to be fitted into the retaining hole in a sliding manner, a hook formed above the slider and protruded forwardly which is adapted to be fitted into the holding groove, and a tension slit formed between the slider and the hook to afford elasticity to the auxiliary guider.  
     
     
         3 . The paper guide device as set forth in  claim 2 , in which the auxiliary guider is provided at an upper end of its rear surface with a hanger protrusion, which is hung on an upper end of the lower guide frame.  
     
     
         4 . The paper guide device as set forth in  claim 1  or  2 , in which the first type of paper has a width of 3 inches, and the second type of paper has a width of 2 inches.  
     
     
         5 . The paper guide device as set forth in  claim 1 , in which the lower and upper guide frames are coupled to each other by screws.  
     
     
         6 . The paper guide device as set forth in  claim 1 , in which the lower guide frame is provided at its front surface with a vertical retaining hole into which the auxiliary guider is fitted, the upper guide frame being provided with a protrusion at a position of its upper end corresponding to an inner side of the retaining hole, which defines a holding groove in conjunction with the other guide piece of the pair of guide pieces, the auxiliary guider including a slider to be fitted into the retaining hole in a sliding manner, a hook formed above the slider and protruded forwardly which is adapted to be fitted into the holding groove, and a tension slit formed between the slider and the hook to afford elasticity to the auxiliary guider.  
     
     
         7 . A paper guide device for a compact printer, comprising: 
 a lower guide frame mounted on the compact printer, which is provided at it front surface with a pair of vertical fitting grooves having a spacing therebetween to allow a first type of paper to pass therethrough, and is provided between the pair of fitting grooves with a vertical retaining hole, which is spaced from either of the pair of fitting grooves by a distance corresponding to a width of a second type of paper smaller than a width of a first type of paper;    an upper guide frame coupled to a front surface of the lower guide frame with a gap existing therebetween to allow a paper to pass therethrough, which is provided at both sides of its rear surface with a pair of guide pieces to be fitted into the fitting grooves, and which is provided with a pair of holding protrusions defining a holding groove therebetween at a position of its upper end corresponding to the retaining hole; and    an auxiliary guider including a slider to be fitted into the retaining hole in a sliding manner, a hook formed above the slider and protruded forwardly which is adapted to be fitted into the holding groove, a tension slit formed between the slider and the hook to afford elasticity to the auxiliary guider, and a hanger protrusion provided at an upper end of the auxiliary guider and hung on an upper end of the lower guide frame.    
     
     
         8 . The paper guide device as set forth in  claim 7 , in which the first type of paper has a width of 3 inches, and the second type of paper has a width of 2 inches.  
     
     
         9 . The paper guide device as set forth in  claim 7 , in which the lower and upper guide frames are coupled to each other by screws.