How to draw the appended drawings of patent application specification

according to chapter 1, part 1 of the review guide? 4, the appended drawings of the instruction manual shall be drawn with drawing tools and black ink, and the lines shall be uniform, clear and deep enough, and shall not be colored or altered. The section line in the section drawing shall not hinder the clear identification of the reference mark line and the main line. ? Several drawings can be drawn on a piece of paper. A general drawing can be drawn on several drawings, but it should be ensured that the drawings on each sheet are independent, and when all the drawings are combined to form a complete general drawing, they will not affect each other's clarity. There shall be no border around the attached drawings. If the total number of drawings is more than two, they shall be numbered in Arabic numerals, and the number shall be preceded by the word "Figure", such as Figure 1 and Figure 2. The attached drawings should be drawn as vertically as possible on the drawings, clearly separated from each other. When the horizontal dimension of the part is obviously larger than the vertical dimension and must be arranged horizontally, the top of the drawing should be placed on the left side of the drawing. When there are more than two drawings on a page, and one of them has been horizontally arranged, the other drawings on the page should also be horizontally arranged. ? Reference numerals shall be numbered in Arabic numerals. The same part should use the same reference number when it appears in different drawings, and the same reference number should be used in all documents (specification and drawings, claims and abstract) of a patent application, but it is not required that the reference numbers in each drawing are continuous. The size of the attached drawings should be appropriate, so that every detail in the drawings can be clearly distinguished, and it is suitable for mass reproduction by means of photographic plate making, xerography, microfilming, etc. The same drawing should be drawn at the same scale, and a partial enlarged drawing can be added to make a certain component clearly displayed. The appended drawings should not contain other notes except necessary words. The words in the appended drawings shall be in Chinese, and if necessary, the original text may be indicated in brackets. Flowcharts and block diagrams shall be regarded as attached drawings, and necessary words and symbols shall be given in their boxes. Under special circumstances, photos can be attached to drawings as attached drawings. For example, when showing metallographic structure or tissue cells.