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精裝書籍的形式有哪些

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-10-21 | 556 Views | 🔊 Click to read aloud ❚❚ | Share:
精裝書籍的形式有哪些

精裝書籍的形式有哪些


精裝書籍的形式常以書芯書背加工的形狀、書殼的外形及結
構、書芯與書殼套合的形式進行分類。

1.書芯書背的形狀

書芯書背的形狀分為圓背有脊、圓背無脊和方背(或稱平背)三種。書籍的前封和後封與書背的連接處稱為書脊。平裝書刊的書脊不高出書芯平面,而精裝書刊的書脊一般要高出書芯的平面。書脊分為真脊和假脊。真脊是利用書背上下兩邊變形的弧度高出書芯平面;假脊則是利用紙板鑲在書背後形成的書脊,書脊的脊高等於封面紙板的厚度。


①方背書芯。

是指書芯的書背平直方正。書背不突出,與平裝
書刊的書背基本相似。書背與書芯上下環襯互成直角。由於精裝書芯是用鎖線訂連,每一個書帖的訂口折縫裡面都用線穿過,因此書芯背脊比書帖其他部分要厚一些,書籍的帖數越多,書脊背與書芯其他部分厚度的差別也越大。所以方背書芯的形式一般只用於厚度約為20mm的精裝書籍。



②圓背有脊書芯。

圓背有脊書芯又稱圓背真脊書芯。書芯背部
呈圓弧形,書脊高起有脊壟,堅硬挺實。這種書背的形式適合於裝訂較厚的書籍,裝上書殼後有明顯的書槽,翻閱方便。目前我國的精裝書籍多採用這種圓背有脊的加工形式。



③圓背無脊書芯。

圓背無脊書芯又稱圓背假脊。書芯背部呈圓
弧形,書背與書芯的厚度相同,堅實挺括,但沒有書脊。這種形式的書芯,一般常與軟質書殼或塑料壓制而成的書殼相配套。

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精裝書籍的形式有哪些
精裝書籍的形式有哪些

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