Laser printers used with data processing machines

1. Scope and Applicability

This PCR produces manufacturing foreground data for new, single-function laser printers accepting digital input from data processing machines. Monochrome and colour models share this rule, with configuration-specific records. Laser exposure, toner transfer and fusing distinguish the technology; LED-only devices, inkjet printers, multifunction devices, standalone copiers and replacement cartridges sold alone are excluded. Classification identity follows un-cpc-3-0-structure-2025; terminology follows epa-imaging-equipment-v3-2-2021.

The executable foreground route begins with purchased subassemblies and ends with tested, packed printers at the factory gate. It supports upstream-linked manufacturing datasets, not a complete printing-service comparison. Integrated component manufacture must be represented by linked supplier processes or an explicitly expanded atomic inventory before the dataset claims cradle-to-gate completeness.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.office-accounting-and-computing-machinery.laser-printers-used-with-data-processing-machines
classification_refs	CPC 3.0: 45264 (un-cpc-3-0-structure-2025)
covered_products	New computer-connected single-function laser printers, monochrome or colour
excluded_products	Inkjet, LED-only and multifunction devices; standalone copiers; consumables alone; remanufacturing
representative_product	A declared model of single-function laser printer, without assigning a generic model mass
production_route	Purchased print engine and separately supplied components; assembly, factory test and packing
market_state	New tested hardware with declared starter consumables, ready for dispatch

3. Reference Flow

Field	Value
What	Supply laser-printing hardware converting electronic images to paper output
How much	Declared manufacturing unit: 1 kg net printer product; disclose model-specific kg per device
How well	Declared resolution, monochrome/colour capability, media size, duplex function and print speed; pass model acceptance test
How long or cycle	One manufacturing cycle through factory release; service lifetime and page volume are not assumed
reference_flow_link	Row printer; multiply per-kg inventory by measured kg/device for one device; mass equivalence is not functional equivalence

Field	Value
Reference amount	1
Reference product flow	Laser printers used with data processing machines 19a06db9-33d8-4f4d-b11a-3f43e6a4b2e1
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	Model; laser exposure technology; single-function status; colour capability; resolution; media size; print speed and test mode; duplex configuration; net kg/device; starter cartridge and toner fill; included accessories; packaging mass separately; factory and country; reporting period; purchased-component boundary

Declare every required qualifier in the foreground package. Net product mass includes the declared supplied cartridge and accessories but excludes shipping packaging and test paper.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
mass_basis	printer and subassemblies	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Weigh each declared configuration. Convert count records using measured component or device mass; never use shipping weight for product normalization.
electricity_units	factory electricity	Net calorific value	MJ	Preserve meter kWh records and convert with 1 kWh = 3.6 MJ. Power in W needs elapsed hours before conversion. TEC use-stage consumption is not factory energy.
paper_basis	test paper	Mass	kg	Calculate paper mass from sheet count, sheet area and measured grammage; distinguish sheets from printed sides.

5. System Boundary

rule_id	Applies to	Rule	source_ids
boundary_factory	foreground route	Include incoming component supply burdens, inbound freight links, assembly electricity, factory testing, packing and treatment links for factory waste. Exclude downstream distribution, customer paper, replacement consumables and use electricity from this manufacturing result; disclose these exclusions.	lexmark-m5163-lca-2024
boundary_components	purchased modules	Define the print engine as one purchased electromechanical assembly. Record its included chassis, drive, fuser, optical unit and wiring on a supplier BOM. Separately supplied housing, controller, power supply and cartridge must not also be included in the engine dataset. Add individually identified extra components and packaging when the actual BOM requires them.	epa-imaging-equipment-v3-2-2021
boundary_emissions	direct emissions	Screen factory measurements for ozone or other individual releases during tests and add each actual substance separately when present. Do not represent electricity upstream emissions as direct factory emissions or interpret absent measurements as zero.

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased subassemblies at the receiving gate, with supplier manufacturing and freight links
starting_condition_role	Foreground assembly starting point, not a burden-free cut-off
product_classification_scope	CPC 3.0: 45264
recursive_input_rule	A purchased complete laser printer is a same-category input with its own upstream dataset, never a print-engine proxy. A rework loop is internal and must not repeat original manufacturing burdens.
upstream_dataset_requirement	Compatible supplier product state, included components, geography, technology and reference property; disclose unresolved links
disclosure	Report site operations, outsourced steps, configuration coverage, excluded life stages and missing data

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
assembly_test_pack	Assembly, factory testing and packing	required	All modeled products	Foreground manufacturing	1 kg net accepted printer

Process: Assembly, factory testing and packing (assembly_test_pack)

The following rows describe the purchased-module route. A conditional row is included only when that item crosses the factory boundary separately; its absence must be supported by the supplier BOM. Shared collection protocols do not merge exchanges.

Inputs

Product flows

Laser printer print-engine assembly (engine)

Purchased engine crosses the assembly boundary; weigh net withdrawals with its documented included components. Inclusion condition: All purchased-engine configurations

• Selected flow: Laser printer print-engine assembly
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Purchased engine crosses the assembly boundary; weigh net withdrawals with its documented included components.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_bom
• Inclusion condition: All purchased-engine configurations

Moulded ABS printer housing (housing)

Weigh the separately purchased finished housing, including rejects; no resin substitution. Inclusion condition: Housing supplied separately and verified as ABS; otherwise document the actual polymer component separately

• Selected flow: Moulded ABS printer housing
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Weigh the separately purchased finished housing, including rejects; no resin substitution.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_bom
• Inclusion condition: Housing supplied separately and verified as ABS; otherwise document the actual polymer component separately

Populated printer-controller circuit board (controller)

Record net controller-board withdrawal mass; exclude boards already included in the engine. Inclusion condition: Controller supplied separately

• Selected flow: Populated printer-controller circuit board
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Record net controller-board withdrawal mass; exclude boards already included in the engine.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_bom
• Inclusion condition: Controller supplied separately

Printer power-supply unit (power_supply)

Record the separately supplied complete power-supply mass and rating; exclude overlapping engine inventory. Inclusion condition: Power supply supplied separately

• Selected flow: Printer power-supply unit
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Record the separately supplied complete power-supply mass and rating; exclude overlapping engine inventory.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_bom
• Inclusion condition: Power supply supplied separately

Laser printer toner cartridge (cartridge)

Record each physical cartridge with its declared toner fill and colour. Sum the same exchange over the actual configuration; distinguish shipped starter units from test-only consumption and retain stocks. Inclusion condition: Cartridge crosses the boundary separately from the engine

• Selected flow: Laser printer toner cartridge
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Record each physical cartridge with its declared toner fill and colour. Sum the same exchange over the actual configuration; distinguish shipped starter units from test-only consumption and retain stocks.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_bom
• Inclusion condition: Cartridge crosses the boundary separately from the engine

corrugated board boxes (box)

Record actual corrugated-box mass issued for shipping; packaging is outside net product mass. Inclusion condition: Corrugated box used for dispatch

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Record actual corrugated-box mass issued for shipping; packaging is outside net product mass.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_bom
• Inclusion condition: Corrugated box used for dispatch

Uncoated office printing paper (paper)

Measure test-paper consumption including retests; retain sheet size and grammage. Inclusion condition: Paper-output factory testing occurs

• Selected flow: Uncoated office printing paper
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Measure test-paper consumption including retests; retain sheet size and grammage.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_factory
• Inclusion condition: Paper-output factory testing occurs

Electricity (electricity)

Meter assembly, test and packing electricity including attributable idle and retest energy; convert kWh to MJ. Inclusion condition: All configurations

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200c9a66 / MJ
• Unit group: Units of energy 93a60a57-a3c8-11da-a746-0800200c9a66
• Amount rule: Meter assembly, test and packing electricity including attributable idle and retest energy; convert kWh to MJ.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_factory
• Inclusion condition: All configurations

Outputs

Product flows

Laser printers used with data processing machines (printer)

Accepted net product mass divided by the same accepted net mass is 1 kg reference output; retain measured kg/device. Inclusion condition: All accepted products

• Selected flow: Laser printers used with data processing machines 19a06db9-33d8-4f4d-b11a-3f43e6a4b2e1
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Accepted net product mass divided by the same accepted net mass is 1 kg reference output; retain measured kg/device.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_bom
• Inclusion condition: All accepted products

Waste flows

Toner-printed office test-paper waste (paper_waste)

Weigh segregated discarded test sheets with retained toner; reconcile retained samples and paper stocks. Inclusion condition: Test sheets discarded from the factory

• Selected flow: Toner-printed office test-paper waste
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Weigh segregated discarded test sheets with retained toner; reconcile retained samples and paper stocks.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_waste
• Inclusion condition: Test sheets discarded from the factory

Rejected laser printer waste (printer_waste)

Weigh complete irreparable rejected printers leaving the factory; record cartridge removal and composition, excluding internal rework. Inclusion condition: Irreparable whole printer discarded

• Selected flow: Rejected laser printer waste
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Unit group: Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
• Amount rule: Weigh complete irreparable rejected printers leaving the factory; record cartridge removal and composition, excluding internal rework.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: Per 1 kg accepted net printer product
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_waste
• Inclusion condition: Irreparable whole printer discarded

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_factory	shared assembly line	Use line submetering and configuration-specific withdrawals first. For inseparable shared electricity, allocate using logged equipment time multiplied by measured operating power and reconcile shares to the meter total under cp_factory. Disclose the driver and sensitivity; device mass alone is not an energy driver.
allocation_rejects	rework and waste	Charge actual reject and rework burdens to accepted production. Retain waste treatment burdens without speculative avoided-virgin-material credits. Record any saleable co-product separately and justify a specific allocation rule before using the dataset.	lexmark-m5163-lca-2024

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_bom	assembly_test_pack	component inputs and product output	BOM and scales	part number; configuration; received/issued/returned stock; component mass; accepted counts; net product mass; starter fill	Trace serial/BOM revisions to calibrated weighing and stock movements	kg; item	Each lot and BOM revision	One disclosed representative production year, or justified shorter full campaign	Declared factory and supplier modules	Net withdrawals divided by accepted net product kg; avoid nested BOM overlap	BOM; calibration; stock reconciliation
cp_factory	assembly_test_pack	electricity and test paper	meter and test log	kWh start/end; machine time and power; idle periods; test sheets; area; grammage; configuration; retests	Submeter line and test station; record warm-up and retest cycles; weigh paper	kWh; h; W; kg	Each shift and test campaign	Same period as cp_bom	Assembly and test stations	Sum actual attributable consumption then divide by accepted net kg	Meter calibration; power-time reconciliation; test settings
cp_waste	assembly_test_pack	paper and rejected printer waste	weighbridge and waste manifests	stream identity; mass; toner content; stock change; recovered/reworked status; receiver and treatment route	Weigh segregated streams and reconcile disposal documents	kg	Each dispatch and monthly reconciliation	Same period as cp_bom	Factory waste exit	Mass leaving factory divided by accepted net product kg; exclude internal rework transfer	Waste tickets; receiver records; inventory balance

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalize	all rows	Q_ref = Q_attributable / M_accepted; M_accepted = sum of accepted device counts times measured net kg/device. Reference output equals 1 kg by normalization.	cp_bom; cp_factory; cp_waste	kg or MJ per kg printer
energy	electricity	E_MJ = 3.6 × metered kWh. Retain actual test duty; do not substitute weekly TEC or rated maximum power for measured factory energy.	cp_factory	MJ/kg	epa-imaging-equipment-v3-2-2021
mass_reconcile	physical materials	Reconcile net material inputs against product, segregated wastes and inventory change; explain residuals against measurement uncertainty. Packaging accompanies the shipment but is excluded from reference product mass.	cp_bom; cp_waste	documented balance

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
quality_identity	supplier data	Verify purchased assembly state and component coverage; never substitute primary polymer for a moulded housing or a complete printer for its engine.	cp_bom
quality_period	all activity data	Align site and reporting period; disclose sampling, missing meters, allocation, upstream proxies and unmeasured direct releases. No measured record means unknown, not zero.	cp_factory; cp_waste
quality_evidence	ranges and literature	Do not transfer case values across configurations. No external amount ranges are prescribed; collect primary values. The Lexmark report has inconsistent single-function/multifunction wording on page 3, so that passage is not used to define this category.	lexmark-m5163-lca-2024

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference	reference product	Require all reference qualifiers, positive accepted output and a measured net count-to-mass conversion. Reject multifunction or non-laser technology under this identity.	un-cpc-3-0-structure-2025
validate_inventory	inventory	Every included exchange needs an amount, unit, protocol evidence and consistent denominator. Check conditional applicability, BOM coverage, mass residuals and electricity allocation reconciliation. Unresolved flow or supplier identity must remain explicit.
validate_claim	dataset claim	A manufacturing result must not claim lifetime printing-service equivalence. A cradle-to-gate claim requires complete supplier and treatment links; omitted actual exchanges make completeness inconclusive.	lexmark-m5163-lca-2024

10. Published Dataset Profile

Field	Value
dataset_role	secondary_dataset
downstream_use	background_dataset; process; lifecyclemodel
allowed_use	Manufacturing input for matching laser-printer configuration, geography and technology; service model only after adding use, consumables, distribution and end-of-life
excluded_use	Multifunction or inkjet manufacturing; direct service comparison per kg; certification or full lifecycle claims from this foreground inventory alone
required_metadata	All reference qualifiers; factory; time; BOM version; upstream supplier coverage; allocation; boundary
required_quality_disclosure	Measured versus estimated values; missing UUIDs and links; conditional applicability; uncertainty; excluded life stages; unresolved ranges
update_trigger	BOM, technology, supplier, factory, packaging, test duty or measurement method changes

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	official_guidance	UN Statistics Division, CPC 3.0 structure, 30 June 2025; https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv; retrieved 2026-09-08	Classification identity and neighboring exclusions
epa-imaging-equipment-v3-2-2021	standard	US EPA, ENERGY STAR Imaging Equipment Version 3.2, definitions 1.A, 1.B, 1.C and 1.E; https://www.energystar.gov/sites/default/files/ENERGY%20STAR%20Imaging%20Equipment%20Version%203.2%20Final%20Specification_0.pdf; retrieved 2026-09-08	Printer, laser marking engine and operating-mode distinctions; no certification claim
lexmark-m5163-lca-2024	literature	Lexmark, Life Cycle Assessment: Laser Printer M5163, issue 12/4/2024, pp. 5-6, 11-12; https://www.lexmark.com/content/dam/lexmark/documents/compliance/lca/M5163.pdf; retrieved 2026-09-08	BOM and teardown evidence, separate hardware and consumables accounting; case-specific results are not defaults