Rated line accuracy of +/-0.1% supports survey and site-plan dimensioning.
Six inks with dual blacks keep color coordination layers separated on bond.
The 160 GB HDD and Pentium M processor enable queuing, reprints and IT-managed job handling.
Single-function only — no built-in scan or copy; consider an MFP model if you need them.
Single-roll design means operator intervention on long or mixed-size sets.
Page language is PCL 3; verify PostScript-only RIP workflows before buying.
There is a moment familiar to anyone who has stood at the roll end of a 44-inch plotter: a full D-size site plan slides out, and you check whether the property lines land where the surveyor drew them. On the HP DesignJet T770, that check tends to go quietly — line accuracy is rated at +/-0.1%, and the smallest line it will hold is 0.00236 in (0.0600 mm). For dimensioned drawings, that quiet is the whole point.
This is a single-function, six-ink color plotter built for the working AEC document — bid sets, permit drawings, redlines, the occasional presentation board — rather than for photographic art. The 160 GB internal hard drive is the detail that shapes how it belongs in a shared office.
44"Media widthfull E-size roll output
+/-0.1%Line accuracydimensional trust for survey and site plans
0.00236" (0.0600 mm)Minimum line widthfine linework and small annotation
103 pphA1 line speedHP-rated, normal quality
What the eye sees on bond
The T770 lays down six inks — Cyan, Magenta, Yellow, Gray, plus a photo Black and a pigment Black — through three printheads at up to 2400 x 1200 DPI, with 9- and 6-picoliter drops. In AEC terms, the practical payoff isn’t saturation, it’s separation: where a coordination drawing stacks a magenta MEP layer over a gray existing-conditions background, the boundary stays crisp rather than muddying. Skin tones and deep photographic shadows aren’t this machine’s assignment, and I’d not measure it against one that is. What it does well is keep a thin cyan hatch legible next to fine black text on ordinary bond.
The dual black approach — one pigment, one photo — matters where the same office prints matte permit sheets one hour and a glossy cover the next. HP rates best-quality throughput at 33.3 ft²/hr; treat that as a color-plot figure, not a rough-draft one.
The hard drive, and why IT cares
The distinguishing feature over the plain T770 is right in the name: this configuration ships with a 160 GB HDD and an Intel Pentium M processor running at 800 MHz. In a shared print room, that storage lets the device queue and reprint jobs without leaning on a workstation, and it gives IT a place to enforce secure handling of drawings that shouldn’t sit in an open output tray. It connects over Fast Ethernet (10/100Base-T) with a USB 2.0 Type-A port alongside.
Media handling is genuinely broad for a machine of this footprint: roll and sheet, bond and coated, photo, matte and glossy, even vinyl, up to 0.031 in (0.8 mm) thick and 60–328 g/m². The tradeoff to note is language support — it speaks PCL 3, so shops standardized on a PostScript-only RIP workflow should confirm their pipeline before committing.
The 44-inch chassis with front roll loading — a single-roll design, so plan on operator intervention when a long set crosses a media change.
Estimate a plan set's run time from the HP-rated A1 line speed of 103 pph — adjust for your quality setting, because color plots run slower than mono line work.
One set: – · Weekly plotting time: –
Computed from the manufacturer's rated 693 ft²/h. Real-world mixed sets run slower — treat this as a best case for comparing machines, not a promise.
Where it fits, and where to look elsewhere
For a small-to-mid architecture studio or an MEP group that needs color coordination sheets and dependable dimensional accuracy from one 44-inch device, the T770 with HDD is a sensible fit. If you need copy and scan built in, this single-function machine won’t cover you — an MFP such as the HP DesignJet T850 36-in changes that calculation. If your throughput is heavy and roll changes are eating operator time, a dual-roll T1600dr or a higher-volume HP T7100 earns its keep. Cross-shopping the class, the Canon GP-4000 44-in is worth a side-by-side. And if 44 inches is more width than you’ll ever use, the 36-in T730 steps you down cleanly.
The T770 with HDD is a workmanlike 44-inch color plotter that earns its place on dimensional accuracy, broad media handling and the practical convenience of on-board storage in a shared office. Read its speed and color specs as AEC-document figures, not fine-art ones — that’s the work it’s built for. If you need scanning, dual rolls or high sustained volume, step within the family; if you need trustworthy plans from a compact single-function machine, this one holds its line.
Graded on a curve against the best published spec among the wide-format printers we track — 100 = the catalog’s gold standard for that metric (the finest droplet, the longest warranty, the fastest rated speed actually on the market). Every input is a manufacturer-published spec; rated speeds are shown as listed, not timed throughput. Ticks mark the class best. How we grade →
Verified specifications
The specs that decide it
Maximum resolution
2400 x 1200 DPI
Printing colors
Black, Cyan, Gray, Magenta, Pigment black, Yellow
Page description languages
PCL 3
Media thickness
0.8 mm
Maximum roll diameter
5.31" (13.5 cm)
Ethernet
Yes
Power consumption
120 W
Specifications
Full technical detail
Max resolution2400 x 1200 DPI
Max print width44"
ColorColor
ConnectivityEthernet (Gigabit LAN), USB
Use caseCAD / Technical
Printing
Color
Yes
Print head
3
Printing colors
Black, Cyan, Gray, Magenta, Pigment black, Yellow
Maximum resolution
2400 x 1200 DPI
Page description languages
PCL 3
Print speed (best quality)
33.3 ft²/hr
Print cartridge volume (metric)
69/130 ml
Print speed (line, black, normal quality, A1)
103 pph
Performance
Certification
WEEE, RoHS, REACH, EuP, FEMP
Storage media
HDD
Built-in processor
Intel® Pentium® M
Processor frequency
800 MHz
Internal storage capacity
160 GB
Paper handling
Roll paper
Yes
Media thickness
0.8 mm
Roll top margin
0.197" (5 mm)
Maximum media width
1118 mm
Maximum roll diameter
5.31" (13.5 cm)
Paper tray media types
Bond paper, Coated paper, Glossy paper, Matte paper, Photo paper, Plain paper
Recommended media weight
60 – 328 g/m²
ISO A-series sizes (A0…A9)
A0, A1, A2, A3, A4
Ports & interfaces
USB port
Yes
Ethernet LAN
Yes
USB connector
USB Type-A
RJ-45 ports quantity
1
USB 2.0 ports quantity
1
Ethernet LAN data rates
10/100Base-T(X)
Ethernet interface type
Fast Ethernet
Weight & dimensions
Weight
179.9 lbs (81.6 kg)
Size (imperial)
44"
Weight (imperial)
180 lbs
Dimensions (WxDxH)
69.7 x 27.6 x 41.3" (1770 x 702 x 1050 mm)
Power
Power requirements
100 – 240V, 50/60Hz
Power consumption (off)
0.1 W
Power consumption (typical)
120 W
Power consumption (PowerSave)
7 W
Operational conditions
Storage temperature (T-T)
-25 – 55 °C
Operating temperature (T-T)
41 – 104 °F
Storage relative humidity (H-H)
0 – 95%
Recommended humidity operating range
20 – 80%
Other features
Safety
CSA, LVD, GOST, CCC, PSB, IRAM, NYCE
Ink drop
9/6 pl
Functions
Print
Photo paper
Yes
Vinyl media
Yes
Coated paper
Yes
Line accuracy
+/-0.1%
Minimum line width
0.00236" (0.0600 mm)
Acoustic power emissions
6.2B(A)
Acoustic pressure emissions
46 dB
Compliance industry standards
IEEE 802.3, IEEE 802.3u
Electromagnetic compatibility
FCC, ICES, EMC, ACMA, CCC, KCC, VCCI
Acoustic power emissions (standby)
44 dB
Acoustic pressure emissions (standby)
26dB(A)
Packaging data
Package weight
242.1 lbs (109.8 kg)
Package weight (imperial)
244 lbs
Package dimensions (WxDxH)
76 x 30.2 x 30.7" (1929.8 x 766 x 779.7 mm)
Package dimensions (W x D x H)
75.98 x 30.16 x 30.7"
System requirements
Mac compatibility
Yes
Compatible operating systems
Windows 7
Windows Vista (32/64-Bit)
Windows Server 2008 (32/64-Bit)
Windows XP Home/Professional (32/64-Bit)
Windows Server 2003 (32/64-Bit)
Mac OS X v10.4, v10.5
Novell NetWare 5.x, 6.x
Citrix XenApp
Citrix XenServer
Everything that fits the HP DesignJet T770
The full supplies hub lists every cartridge, printhead, roll and accessory verified against the manufacturer's own documentation for this machine.
10 ink cartridges · 3 printheads · 53 paper & media items · 4 accessories · 2 coverage plans
Genuine consumables that fit the HP DesignJet T770 w/HDD 44-in (with Hard Disk) — only the cartridges, printheads and media compatible with this model.
What is the maximum print width and media it handles?
It prints up to 44 in wide on rolls or sheets, handling bond, coated, photo, matte, glossy and vinyl media up to 0.031 in (0.8 mm) thick and 60–328 g/m².
What does the HDD version add over the standard T770?
This configuration includes a 160 GB internal hard drive and an 800 MHz Intel Pentium M processor, which support job queuing, reprints and more secure handling of stored drawings in a shared environment.
How fast is it for plan sets?
HP rates A1 line printing at 103 pph in normal quality and best-quality color output at 33.3 ft²/hr; color plots run slower than monochrome line work, so size runs by your quality setting.
Does it scan or copy?
No. The T770 with HDD is print-only. If you need integrated scan and copy, look at an MFP in the family such as the HP DesignJet T850 36-in.
How does it connect to our network?
It offers Fast Ethernet (10/100Base-T) and a USB 2.0 Type-A port, with support for Windows and Mac OS X client environments.
What page description language does it use?
It uses PCL 3. Shops built around a PostScript-only RIP should confirm their workflow before standardizing on this model.