Spot Color Automation Means the Ink Room Has to Be Reorganized

The signal from ChromaStar is direct: spot color has moved from an ink-mixing craft held in a press operator's hands into formula, dosing, and measurement management on the same workflow. When MINDS Printing (MS, mid- to high-end fully customized commercial printing) looks at ink room workflows, it first uses the "MINDS Printing (MS) three ink room checkpoints" to check whether formulas have versions, weighing has batch numbers, and measurements have approvals

A spot color is a dedicated ink color specified by a brand or package, often communicated through Pantone. On press, it is printed as an independent ink to protect brand colors and material effects that are difficult to reproduce consistently with four-color process printing

PrintIndustry.news reported on July 16, 2026 that Heidelberg launched ChromaStar for automated spot color preparation. The series includes four models, ChromaStar X, S, M, and P, mainly targeting packaging printers that produce spot colors on demand and want to reduce the burden of outsourced pre-purchasing and manual premixing

The phrase I worry about most on site is when an ink room says, "that last bucket was close enough." For the same brand color reprinted across three batches, the design file may not have changed. The real gap often comes from formula records, weighing habits, ink storage, and pre-press measurement. Operator experience is valuable, but brand color should not be left in the care of memory

The point of ChromaStar is to break spot color preparation into manageable actions. Heidelberg connects ChromaStar with Saphira Cloud, Saphira Check, and Saphira Control, bringing color formulation, dosing, and color measurement into the same production workflow, then using a proofing system to confirm that the approved color and printed color match

・Formula: ChromaStar X keeps manual color mixing but adds computerized formula management, with an architecture reserved for future automation upgrades

・Dosing: ChromaStar S is the smallest automated model in the series. It is equipped with 20 metering heads and positioned for print shops using 1 to 10 metric tons of spot color per year

・Capacity: ChromaStar M can be configured with 16 to 32 metering valves. Heidelberg states that for a 25 kg, 3-component batch, the metering time is 5 minutes

・Scheduling: ChromaStar P supports 16 to 24 metering valves, adds queue management, and runs ink handling through a fully automated process

・Location: ChromaStar S debuted on June 10 at Packaging and Label Day and is currently installed at the Home of Print demonstration center in Wiesloch-Walldorf, Germany

These specifications carry a very practical reminder for print shops in Taiwan. Spot color automation is not simply handing the scale to a machine. It is turning "who approved the formula, who dosed the ink, who measured it, and who released it" into workflow data. Packaging printers with short runs and many SKUs should pay particular attention to this point

Small and mid-sized print shops in Taiwan should not begin by asking whether they need to buy an automatic dosing system. They should first ask about annual spot color usage, short-run changeover frequency, returns and leftover ink pressure, and whether these have reached the point where the ink room needs to be reorganized. ChromaStar S's positioning for 1 to 10 metric tons of annual spot color usage can serve as an initial evaluation reference

・① Formula checkpoint: every Pantone or brand color must have a version, date, material, ink system, and approver. "Use last time's version" is not enough

・② Weighing checkpoint: every bucket of spot color needs a batch number, component ratio, actual weight, and operator record. ChromaStar M's example of 25 kg, 3 components, and 5 minutes reminds us that weighing time itself can also be managed

・③ Measurement checkpoint: before going on press, use a spectrophotometer and Delta E to make a judgment. The operator's eye is important, but brand clients need traceable acceptance standards

Ink room KPIs also need to change. I suggest starting with formula reuse rate, dosing wait time, leftover ink value, pre-press measurement pass rate, and the number of reprint color difference complaints. These numbers explain whether the ink room is blocking the production line better than "were we busy today?"

If a brand client's packaging revision involves Pantone, specialty paper, and reprint color differences, when handing the job to MINDS Printing MS, bring the approved sample, material, and acceptable Delta E into the discussion. For more standard specifications, price-sensitive business cards, stickers, and simple printed materials, MINDS Printing MYS will be closer to online ordering needs

ChromaStar-type workflows amplify the impact of front-end specifications. If design handoff is vague, even an ink room with 20 metering heads can only produce an unclear bucket of color faster

・Brand colors should include the Pantone number, CMYK substitute values, and Lab target values. A screen capture alone is not enough

・Packaging materials must be specified clearly. The same spot color will look different on coated paper, woodfree paper, matte film, gloss film, and transparent materials

・Proofing must have an approved sample. The goal of ChromaStar's proofing system is exactly to make the approved color and printed color line up

・Reprints should retain the previous batch's sample sheets, print conditions, measurement records, and ink formula version, so every restart does not feel like guessing the color all over again

The choice between Pantone spot color and an independent CMYK plate should also return to the business objective. Primary brand visuals, drugstore packaging, food packaging, and highly recognizable labels usually benefit from clear spot color specifications. Short-term campaign items and low-unit-price materials with many variations require careful calculation of spot color cost, lead time, and inventory pressure

ChromaStar connects Saphira Cloud, Saphira Check, and Saphira Control into the workflow. The reminder for SaaS and AI application teams is clear: software must understand the fields in the ink room. It cannot just make a nice dashboard

・Formula versions must be searchable. Once a brand color has been changed, the reprint result may be different

・Weighing batch numbers must be traceable. When a problem occurs, only then can you tell whether the gap came from the formula, dosing, ink batch, or storage environment

・Measurement results must be signable. Delta E, light source conditions, material, and approver all need to remain in the same job ticket context

・Scheduling must be schedulable. ChromaStar P's queue management shows that spot color preparation itself can also become a capacity bottleneck

AI applications must first clean up data collection. If a print shop cannot even look up which formula version was used for the second reprint, no matter how smart the system is, it can only issue reminders after the fact. It will struggle to help the site identify responsibility points for color differences

・If spot colors are not managed well, short runs with many SKUs will get stuck in the ink room first

・Operator experience should be preserved, ideally in formula versions, weighing batch numbers, and measurement records

・Before automation, clean up job ticket fields first. One fewer reprint means one more profit opportunity

・Brand color should not wait until the job is on press to be confirmed. Design files, proofing, and measurement should be clarified earlier

My implementation advice is to first treat the ink room as a site where data flows. On the print manufacturing side, start filling in formula versions, weighing batch numbers, Delta E measurements, and approved samples. On the design and procurement side, write Pantone, materials, proofing, and reprint conditions into the print specifications. AI application and SaaS teams can then turn these fields into workflows that are searchable, signable, and traceable. When the MINDS Knowledge Academy consulting team looks at cases like ChromaStar, it does not start by discussing equipment specifications. It first asks whether the ink room can answer how the same brand color differs across the first, second, and third reprints

・Heidelberg launched ChromaStar for automated spot color preparation