IDENTIFIKASI PENYEBAB WARNA BELANG PADA HASIL CETAKAN BUKU MENU STEAK 21 PADA MESIN HP INDIGO 5900 DI PT. BINTANG SEMPURNA

ABSTRACT
Banding defects are one of the quality problems in the digital printing process that can reduce print quality and increase the number of rejected products. This study aims to identify the causes of banding defects in the printing of Steak 21 Menu Books using the HP Indigo 5900 digital press at PT Bintang Sempurna and to propose appropriate control measures. The research employed a descriptive method with a qualitative approach using the Fishbone Diagram (Cause-and-Effect Diagram). Data were collected through observations, interviews, documentation, and literature studies. The results indicate that banding defects are influenced by human, machine, material, method, and environmental factors. The proposed control measures include preventive maintenance, regular inspections, color calibration, replacement of machine components according to their service life, and the development of an educational poster for operators. These measures are expected to reduce banding defects and improve print quality.

Keywords: HP Indigo 5900, banding defect, Fishbone Diagram, print quality, quality control.

ABSTRAK
Defect warna belang (banding) merupakan salah satu permasalahan kualitas pada proses digital printing yang dapat menurunkan kualitas hasil cetak dan meningkatkan produk reject. Penelitian ini bertujuan untuk mengidentifikasi penyebab munculnya defect warna belang pada hasil cetakan Buku Menu Steak 21 menggunakan mesin HP Indigo 5900 di PT Bintang Sempurna serta menentukan upaya pengendaliannya. Metode yang digunakan adalah deskriptif dengan pendekatan kualitatif menggunakan Diagram Fishbone (Cause and Effect Diagram). Data diperoleh melalui observasi, wawancara, dokumentasi, dan studi pustaka. Hasil penelitian menunjukkan bahwa defect warna belang dipengaruhi oleh faktor manusia, mesin, material, metode, dan lingkungan. Pengendalian yang diusulkan meliputi preventive maintenance, inspeksi berkala, kalibrasi warna, penggantian komponen sesuai umur pakai, serta pembuatan poster edukatif bagi operator. Upaya tersebut diharapkan dapat mengurangi defect warna belang dan meningkatkan kualitas hasil cetak.

Kata kunci: HP Indigo 5900, warna belang, banding, diagram fishbone, kualitas cetak.