Recess Printing Ink Feel Ridge Test Flag

Audit independently observed ink ridge measurements, not recommended touching or an authentication proof. Missing observations remain explicit. Caller independently verifies observations, reference edition, units and applicability; not a grading-service certificate, authentication, conservation treatment, actual market price or legal/insurance entitlement.

Description

Raised ink can be an observed feature relevant to printing-method review.

Raised ink can be an observed feature relevant to printing-method review.^[1]

This checker compares supplied ink-ridge observations with explicit bands rather than identifying recess printing by touch automatically.

When to use Recess Printing Ink Feel Ridge Test Flag

Use this tool when you need to review known observations against explicit inclusive bands. Prepare independently verified observations, reference edition/context, and matching units or currency basis.

How to use Recess Printing Ink Feel Ridge Test Flag and understand its results

Prepare independently verified observations, reference edition/context, and matching units or currency basis.
Enter observedInkRidge, callerInkRidgeLower, callerInkRidgeUpper, knownInkRidgeFlags, following the field table and calculation rules below, then run the tool.
Read signedKnownMargins, knownReviewIndices, unknownIndices. For result objects, inspect the nested output fields below, including any missing evidence or selected indices.
Correct any input issues and run again. Before using a successful result, review its units, signs, evidence coverage, and stated model or reference assumptions.

Input field	Meaning	Value type	Requirement
observedInkRidge	Observed ink ridge	list of number	Required
callerInkRidgeLower	Caller ink ridge lower	list of number	Required
callerInkRidgeUpper	Caller ink ridge upper	list of number	Required
knownInkRidgeFlags	Known ink ridge flags; binary 1 means assessed and 0 means unknown.	list of number	Required

Enter nonempty aligned observed values, caller lower/upper bounds, and binary known flags. Require lower≤upper for every row, even an unknown one. For a known value return min(value−lower,upper−value): positive inside, zero on a boundary, and negative outside. Only known values strictly outside the inclusive band enter knownReviewIndices. Unknown rows receive a zero placeholder and their separate unknownIndices, so an unknown zero margin is not passing evidence.

margin_i=known_i?min(observed_i−lower_i,upper_i−observed_i):0

Read these symbols with the field meanings and branch or reference rules above.

Output field	Meaning	Value type
signedKnownMargins	Minimum signed distance to the two inclusive bounds for known observations; zero placeholder for unknown observations.	list of number
knownReviewIndices	Zero-based input positions that are known and strictly outside the inclusive reference band.	list of number
unknownIndices	Zero-based input positions without a known observation; inspect before interpreting zero placeholders.	list of number

json

{
  "input": {
    "observedInkRidge": [
      2,
      5
    ],
    "callerInkRidgeLower": [
      1,
      1
    ],
    "callerInkRidgeUpper": [
      3,
      4
    ],
    "knownInkRidgeFlags": [
      1,
      0
    ]
  },
  "output": {
    "signedKnownMargins": [
      1,
      0
    ],
    "knownReviewIndices": [],
    "unknownIndices": [
      1
    ]
  }
}

Limitations and assumptions

The observation method, units, and appropriate bounds come from the supplied records. Unknown observations remain unassessed, and numeric band agreement does not authenticate an item or establish a certified grade.

Missing required fields, unknown fields, wrong types, and violated calculation rules return input issues. Numeric values must be finite; nonfinite numeric outputs are rejected. Arrays must be dense, with no missing cells. Numeric lists allow at most 10000 entries, subject to smaller tool-specific bounds above.

Alternative or Complementary methods

For a related task, use Printing Method Identifier (recess/litho/typo) Decision Tree: Printing methods leave physical features that require independent observation and contextual interpretation. This decision aid returns caller classes compatible with supplied evidence rather than a single inferred printing method. For a complementary step, use Typographed Letterpress Impression Squash Rater: Letterpress impression or ink squash can be recorded on a measurement or reference scale. This rater interpolates supplied squash observations without identifying the printing process or certifying a grade.

References

Recess Printing Ink Feel Ridge Test Flag — tool.io

Similar or alternative tools

Printing Method Identifier (recess/litho/typo) Decision Tree
Printing methods leave physical features that require independent observation and contextual interpretation. This decision aid returns caller classes compatible with supplied evidence rather than a single inferred printing method.
Typographed Letterpress Impression Squash Rater
Letterpress impression or ink squash can be recorded on a measurement or reference scale. This rater interpolates supplied squash observations without identifying the printing process or certifying a grade.