各折り丁の背にギャザリングマークを配置します。各マークは紙の厚さ分だけ位置がずれ、折り丁が正しい順序で積み重ねられると目に見える階段状のパターンを形成します。

くわえ側のマークを追加し、シートの丁合い順序を確認します。
各折り丁の背にギャザリングマークを配置します。各マークは紙の厚さ分だけ位置がずれ、折り丁が正しい順序で積み重ねられると目に見える階段状のパターンを形成します。
各折り丁の背にギャザリングマークを配置します。各マークは紙の厚さ分だけ位置がずれ、折り丁が正しい順序で積み重ねられると目に見える階段状のパターンを形成します。

丁合マーク tool applied. Options panel on the left, imposed result on the right. Click to zoom.
Position gathering marks along the gripper edge: the leading edge of the press sheet.
Marks are placed along the gripper edge (typically the top or leading edge). Each successive sheet or signature gets a mark at a progressively offset position. The offset direction (left-to-right or top-to-bottom) creates a staircase or diagonal pattern when sheets are stacked. Distance from the sheet edge should clear the gripper zone: typically 10–15mm from the leading edge.
Set the width and height of each gathering mark.
Width and height should be large enough to see at a glance during production: typically 3–5mm. The offset increment between successive marks is usually equal to the mark width to create a clean staircase pattern. Marks must be positioned within the trim waste area so they're removed in the finished product.
Define the number of sections and sheets per section for the gathering sequence.
Total sections: how many distinct gathering groups make up the job. Sheets per section: how many sheets are in each gathered set. The mark pattern resets and changes appearance after completing one full sequence, allowing multiple books or sets to run consecutively on the same press sheet layout.
Configure mark color, style, and visibility settings.
Solid black is standard for maximum contrast against paper. After the staircase pattern completes one cycle, the next cycle uses an alternate appearance (different color or hollow marks) to distinguish consecutive sequences. High-speed press operators need marks visible at arm's length: ensure adequate size and contrast.
Specify which pages to process using a range expression.
Examples: 'all' = every page. '1-5' = pages 1 through 5. '1,3,5' = specific pages. '1-10 odd' = odd pages 1-9. '2-20 even' = even pages 2-20. 'last' = last page. 'last-2' = third from last. Ranges are 1-based. Combine with commas: '1-5, 8, 12-15'.
Live rendering showing the gathering mark pattern across the press sheet.
Gripper-edge gathering marks confirm correct sheet sequence during saddle gathering. Each mark shifts by the paper thickness, creating a visible progression along the spine. If any mark is out of position, the wrong sheet was fed and the bindery operator catches it immediately.

Settings to change

Full app view

Output result
Expert Tip
Place gathering marks on the spine of each signature. Each mark shifts position by the paper thickness, forming a visible staircase when signatures are stacked in the correct order.
If the paper weight changes mid-run, recalculate the mark shift. A wrong offset will break the staircase alignment and defeat the purpose of the marks.
Case-Bound (Hardcover) Book
Smyth-sewn case-bound book with proper signature imposition and spine marks.
Catalog Signatures
Multi-signature catalog for perfect binding on commercial presses.
Perfect Bind Finishing Marks
Finishing marks for perfect binding operations with gathering verification.
PDF Press runs entirely client-side. Upload a PDF, apply 丁合マーク, and download the result — no upload to a server, no sign-up required.
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