Publication in the Diário da República: Despacho nº 9182/2020 - 25/09/2020
5 ECTS; 2º Ano, 2º Semestre, 15,0 T + 30,0 PL + 6,0 O , Cód. 964419.
Lecturer
- Luís Miguel Alves de Oliveira (1)(2)
(1) Docente Responsável
(2) Docente que lecciona
Prerequisites
N.A.
Objectives
The Quality Control lecture aims to equip students with the knowledge and skills that will allow them to understand, analyze, and apply quality control methodologies in the different processes of the graphic arts industry, ensuring the technical conformity and consistency of printed products in accordance with international standards and norms.
Program
1. Printing Processes.
1.1 Types of printing processes: Planographic; Ocographic; Relief printing; Permeographic; Digital printing.
1.2 Operating principles of each process.
1.3 Printing equipment: Machines and their main components; Feeding and output systems; Control and regulation systems.
1.4 Printing substrates: Paper and cardboard (types, weight, finish); Plastics and other special substrates.
1.5 Substrate characteristics: Absorption; Roughness; Whiteness and opacity; Ink compatibility.
1.6 Raw materials: Types of inks (conventional, UV, water-based, solvent-based); Additives and varnishes; Dampening solutions (in offset printing).
2. Characterization and Quality Control of Raw Materials
2.1 Fundamental concepts of quality control.
2.2 Quality parameters in graphic arts.
2.3 Ink characterization: Viscosity; Density; Drying; Rheological behavior.
2.4 Substrate characterization: Grammage; Thickness; Roughness; Ink absorption.
2.5 Colorimetric properties: Color spaces (CMYK, CIELab); Optical density; Dot gain; Print contrast.
2.6 Instrumentation and measurement methods: Densitometry; Spectrophotometry; Control through color scales/bars.
2.7 Factors influencing quality: Environmental conditions; Ink/substrate ratio; Printing equipment parameters.
3. Standardization and Control of the Production Process
3.1 Introduction to standardization in Graphic Arts.
3.2 ISO 12647 standard: Objectives and framework; Standardized parameters; Color profiles and printing conditions.
3.3 Color management: Calibration and profile creation; Workflows with color management.
3.4 Quality control in pre-press: File preparation; Digital and analog proofs; Verification and control of color separations.
3.5 Quality control in printing: Preparation of printing equipment; Density and color control; Process stability.
3.6 Quality control in post-press: Cutting, folding and finishing; Varnishing, lamination and binding; Final product inspection.
Evaluation Methodology
Continuous evaluation
Theoretical, individual/group work with presentation and defense 40%
Continuous assessment of individual and group exercises 45%
Report of exercises performed in practical classes 10%
Participation 5%
To be assessed, students are required to attend at least two thirds of the practical classes, and it is mandatory to carry out the scheduled work as well as present and defend them.
Students with an assessment equal to or greater than 10 points are exempt from the exam.
Exam (normal and appeal period)
Written test 40%
Continuous assessment of individual and group exercises 45%
Report of exercises performed in practical classes 10%
Participation 5%
Final classification (at any assessment period)
The student obtains approval with a grade equal to or greater than 10.
Bibliography
- Asunción, J. (2002). O Papel - Técnicas e Métodos Tradicionais de Fabrico. Barcelona: Editorial Estampa
- Barbosa, C. (2009). Manual Prático de Produção Gráfica. Lisboa: Principia
- Biermann, C. (1996). Handbook of pulping and papermaking. San Diego: Academic Press
- Ek, M. e Gellerstedt, G. e Henriksson, G. (2009). Paper Products Physics and Technology. Berlim: Walter de Gruyter
- Kiphan, H. (2001). Handbook of Print Media. Berlim: Springer
- Sindall, R. (2021). Apprenez a fabriquer du papier. Paris: Exibook
- Smook, G. (2016). Handbook for pulp and paper technologists. Atlanta: Tappi Press
Teaching Method
Theoretical classes with oral presentation and audiovisual support.
Practical-laboratory classes with analytical determinations and exercises. Accomplishment and presentation of group and individual works.
Software used in class
Microsoft Teams
Microsoft Excel
Techkon Spectro Conect
