| 摘要 |
PURPOSE:To provide an electronic apparatus with printer which is freed from fear of such troubles as contaminating a table or breaking a type when printing on a rolled paper, by a method wherein printing on a rolled paper can be accomplished only when a bottom cover for a printing part for a sheet form paper is fitted. CONSTITUTION:The bottom cover 25 can be detachably fitted to a main body 1 of an electronic desk-top calculator with printer, and is provided at a central part thereof with a cylindrical projection 27 opposite to the bottom surface of the main body 1. The main body 1 is provided with a circular hole 28 for engaging with the projection 27 at a central part of the bottom surface thereof. A detecting pin 29 for detecting the engagement is slidably placed in a tubular guide 28a provided at an upper part of the hole 28. An upper part of the pin 29 is pressed by an elastic contact piece 31. When printing on the rolled paper, the cover 25 is fitted. As a result, the pin 29 is pushed upwards to bring the contact piece 31 into contact with a printed pattern 31a, thereby closing a switch 43 shown in the block diagram, so that printing can be conducted. Printing on the sheet form paper can be conducted in this condition from an electrical point of view, but the cover 25 must be detached. |
