PUBLICATION PRINTING · AQUEOUS PIGMENT INKS
POD Book Printing Inks: How Web-Fed Inkjet Is Reshaping Publishing
Book printers are moving suitable work from offset to high-speed inkjet. The decision turns on saleable books, paper choices, drying and finishing capacity. Here is what that means for publishers and aqueous ink developers.
A reprint decision starts with demand
For a publisher replenishing a slow-selling title, the lowest printing price can still leave cash tied up in unsold stock. Order size, delivery time and the chance of another revision all belong in the decision. Print-on-demand (POD) brings manufacturing closer to the orders a publisher actually receives.
Ingram's Lightning Source service shows how this works: titles enter a distribution network, customers order them, and the required books are printed and shipped. Its uses include backlist availability, individual orders and smaller replenishment batches. Source: Ingram's POD service and workflow.
POD is therefore a production and fulfilment model, rather than a particular ink chemistry. A printer may use different technologies for different titles, order sizes and book components.
What changes on a web-fed inkjet line?
A continuous-feed press transports a roll of paper through the printing system. In single-pass inkjet, stationary printheads span the printing width while paper moves underneath. The image comes from digital data, without making a printing plate for each job.
File preparation and imposition determine page order. Printing is followed by drying and cooling, then rewinding or further processing. Cutting, folding, binding and trimming turn the printed web into finished publications. An installation may connect these stages inline or process printed rolls nearline. Source: Canon's continuous-feed technology explanation.
Do not confuse continuous feed with continuous inkjet. The first describes paper transport; the second describes droplet generation. Canon ProStream uses piezoelectric drop-on-demand, whereas Kodak PROSPER uses continuous inkjet. A formulation developed for one printhead architecture is not automatically suitable for the other. Canon ProStream specifications; Kodak's CIJ explanation.
Publication ink has to survive the whole production route
Aqueous pigment inks contain dispersed solid colourants; dye inks contain dissolved colourants. Canon identifies gloss and colour development as dye strengths, and light and water resistance as pigment strengths. It also connects pigment dispersion quality with coloration, settling and nozzle reliability. Source: Canon's ink technology overview.
For a book-ink development trial, useful acceptance questions include:
- Text: Is small type legible, with sufficient black density and clean edges on the intended book paper?
- Colour: Do illustrations and repeat orders reproduce consistently?
- Jetting: Does the complete ink maintain drop formation and recover after relevant idle and circulation conditions?
- Duplex output: Are show-through, bleed-through, curl and page handling acceptable at the selected ink coverage?
- Finishing: Does the image withstand contact, folding, stacking and binding without unacceptable marking?
These are proposed evaluation questions, not universal numerical specifications. Record the paper, print mode, conditioning and test method. A dispersion's viscosity, pigment content or D50 must not be copied into a finished-ink specification without formulation and printhead evaluation. Our guides to inkjet dispersion properties and particle-size distributions explain that distinction.
Paper compatibility is an ink-system decision
Inside a printhead, the ink must resist drying; on paper, it must dry and fix quickly enough for the next operation. Those competing requirements help explain why pigment, vehicle, substrate treatment and drying cannot be selected independently. Source: Canon on ink and drying requirements.
Manufacturers use different approaches. Canon combines polymer pigment inks, ColorGrip pretreatment and non-contact drying. SCREEN describes its SC+ inks as suitable for direct printing on supported offset-coated paper without an anchor coat. Kodak describes using aqueous pigment inks with OPTIMAX primers to expand substrate compatibility. Canon's system; SCREEN's SC+ brochure; Kodak's ink-and-primer approach.
These examples describe named manufacturers' systems. They do not establish a single recipe for all publication presses. A successful trial should use the actual paper stock, coverage, line conditions and downstream finishing route.
Two printer cases show how the boundary is moving
KC Book Manufacturing: removing a web-offset press
In September 2025, SCREEN reported that KC Book Manufacturing had removed its remaining 38-inch web-offset press. The installed Truepress JET 520HD mono handled approximately 70% of production. The same account identified further finishing investment as a priority: printing capacity had advanced faster than postpress capacity. Source: SCREEN's named customer case.
Mercury: extending inkjet runs while retaining offset
Kodak's July 2024 Mercury Print Productions case reported a different result. For a typical 600-page job, Mercury's newer PROSPER 7000 Turbo expanded its inkjet production range from approximately 1,500–2,000 copies to 4,000–5,000. Mercury retained sheetfed and web offset. Its printed rolls went to sheeting lines and conventional finishing and binding. Source: Kodak's Mercury case.
The lesson is specific: inkjet can replace an offset production route or take a larger share of a mixed plant's work. Neither case supplies a universal crossover quantity.
Compare delivered books, not press speed alone
| Job characteristic | What to compare |
|---|---|
| Many titles, small or uncertain orders | Plate-free changeovers, batching, replenishment speed and inventory exposure. |
| Frequent revisions or variable content | Digital file changes, version control and finishing changeovers. |
| Long, predictable runs | Offset setup amortisation, inkjet running costs and actual line utilisation. |
| Image-heavy books or demanding stocks | Paper trials, ink laydown, drying, image quality and handling durability. |
| Mixed publishing portfolio | Routing jobs between inkjet, offset and other available production technologies. |
CPI's own 2023 brochure illustrates why copy count alone is unreliable: it described Quantum inkjet web production alongside ZMR web-offset production, including offset runs as low as 500 copies in that operation. Source: CPI corporate brochure, 2023.
For a useful quotation comparison, include setup, paper, ink, maintenance, labour, energy and finishing. Add warehousing, obsolescence and unsold stock where they apply. Compare the number of saleable books delivered to the customer, rather than treating the lowest cost per printed page as the complete answer.
Where surface-modified pigment colourants fit
Self-dispersed pigments use surface-bound functional groups to support stability in water. Cabot's commercial surface-modified platform describes electrostatic stabilisation and reduced reliance on conventional dispersants, demonstrating an established colourant-development approach. Source: Cabot's surface-modified dispersion technology.
Dispersion stability and fixation on paper remain separate development tasks. A stable colourant must still work with the finished ink vehicle, any binder or pretreatment, and the drying process.
For AIC, POD publication printing is a relevant development opportunity for self-dispersed aqueous pigment colourants. A project should define the printhead architecture, paper range, black or CMYK requirement, fixation route and production targets before selecting a starting grade. The OEM cases above are industry examples, not AIC supply or compatibility claims.
A pigment dispersion is an upstream ingredient. It is not a ready-to-use substitute for an OEM press ink.
A production shift with measurable resource implications
Matching production to orders can reduce obsolete stock and unnecessary printing. Environmental comparisons still need the complete process. HP's published summary of a comparative assessment for specified monochrome book-printing systems identifies paper as the dominant contributor to most impacts, with electricity an important secondary contributor for inkjet. Those findings have a defined equipment and application scope. Source: HP's book-printing sustainability assessment summary.
Our assessment is that inkjet will continue taking suitable publication work from offset as ink, paper compatibility and production integration improve. Offset remains valuable where its economics and application strengths fit the job. For ink developers, a convincing result is a repeatable run of saleable, finished books on the customer's chosen paper.