在 A4 文档中使用单张 A3 页面时，装订校正 (BCOR) 错误

Question

我无法编译您的示例以进行重现：

包 grapicx 未加载。
我没有“Bilder/Sequence_Diagram”。

于是我修改了。

编译以下示例时，A3 页面的数字为 3，这是一个奇数，因此是正面页。
对于从左到右语言书籍，正面页是右手页。因此，您的 A3 页面是右手页。
右手页的较大边距通常在右侧。您的 A3 页面就是这种情况。
更改 A3 页面的 BCOR 时，这会影响 A3 页面的左边距，这对我来说似乎是正确的，因为右手页的装订在左侧。

因此我不觉得有什么问题。

右手边页的左边距应该较小，并且装订校正在左侧。
这并不排除左边距加上装订校正小于右边距的情况。
例如，据我所知，带有 A3 横向纸张且未装订校正的右手边页的 Scrbook 左边距为 2.8 厘米，右边距为 5.6 厘米。如果将 1.7 厘米的装订校正添加到左边距，则总和为 2.8 厘米 + 1.7 厘米 = 4.5 厘米，这仍然小于右边距。
因此，即使进行了装订校正，较大的边距在右侧也是正确的。

\documentclass
[   twoside,        
    12pt,            
    DIV=15,          
    BCOR=17mm,       
    headsepline,    
    openright,       
    a4paper,         
    listof=totoc,      
    bibliography=totoc,        
]   {scrbook}
\usepackage{graphicx}

\begin{document}
 Here I am writing on my A4 page.

\cleardoublepage
\KOMAoptions{DIV=15, BCOR=17mm,paper=A3,paper=landscape, pagesize}
\recalctypearea
\chapter{Anhang}\label{ch:Anhang}
\begin{figure}[h!]
    \centering
    \includegraphics[width = 1\textwidth, height=.75\textheight]{example-grid-100x100pt}%
    \caption{Figure caption}%
    \label{fig:Sequence_Diagram}%
\end{figure}%
\end{document}

终端输出显示用于编译的程序/包的版本/发行号 - typearea 抱怨事情不美观并且“认为”行太宽，文本看起来不好看，并且没有意识到行中不包含文本而是图像：

 pdflatex-dev test.tex
This is pdfTeX, Version 3.14159265-2.6-1.40.21 (TeX Live 2020) (preloaded format=pdflatex-dev)
 restricted \write18 enabled.
entering extended mode
(./test.tex
LaTeX2e <2021-05-01> pre-release-1 (develop 2021-2-27 branch)
L3 programming layer <2021-02-18>
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/scrbook.cls
Document Class: scrbook 2020/09/21 v3.32 KOMA-Script document class (book)
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/scrkbase.sty
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/scrbase.sty
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/scrlfile.sty
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/scrlfile-hook.sty
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/scrlogo.sty)))
(/usr/local/texlive/2020/texmf-dist/tex/latex-dev/graphics/keyval.sty)))
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/tocbasic.sty)
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/scrsize12pt.clo)
(/usr/local/texlive/2020/texmf-dist/tex/latex/koma-script/typearea.sty))
(/usr/local/texlive/2020/texmf-dist/tex/latex-dev/graphics/graphicx.sty
(/usr/local/texlive/2020/texmf-dist/tex/latex-dev/graphics/graphics.sty
(/usr/local/texlive/2020/texmf-dist/tex/latex-dev/graphics/trig.sty)
(/usr/local/texlive/2020/texmf-dist/tex/latex/graphics-cfg/graphics.cfg)
(/usr/local/texlive/2020/texmf-dist/tex/latex/graphics-def/pdftex.def)))
(/usr/local/texlive/2020/texmf-dist/tex/latex/l3backend/l3backend-pdftex.def)
(./test.aux)
(/usr/local/texlive/2020/texmf-dist/tex/context/base/mkii/supp-pdf.mkii
[Loading MPS to PDF converter (version 2006.09.02).]
) (/usr/local/texlive/2020/texmf-dist/tex/latex/epstopdf-pkg/epstopdf-base.sty
(/usr/local/texlive/2020/texmf-dist/tex/latex/latexconfig/epstopdf-sys.cfg))
[1{/usr/local/texlive/2020/texmf-var/fonts/map/pdftex/updmap/pdftex.map}]
[2]

Package typearea Warning: Bad type area settings!
(typearea)                The detected line width is about 122%
(typearea)                larger than the heuristically estimated maximum
(typearea)                limit of typographical good line width.
(typearea)                You should e.g. decrease DIV, (increase fontsize)
(typearea)                or change papersize.

chapter 1.

Overfull \hbox (0.56653pt too wide) in paragraph at lines 23--24
 [][] 
[3 </usr/local/texlive/2020/texmf-dist/tex/latex/mwe/example-grid-100x100pt.pdf
>] (./test.aux) )
(see the transcript file for additional information)</usr/local/texlive/2020/te
xmf-dist/fonts/type1/public/amsfonts/cm/cmr12.pfb></usr/local/texlive/2020/texm
f-dist/fonts/type1/public/amsfonts/cm/cmssbx10.pfb></usr/local/texlive/2020/tex
mf-dist/fonts/type1/public/lm/lmss8.pfb>
Output written on test.pdf (3 pages, 37699 bytes).
Transcript written on test.log.

Answer 1